diff --git a/.github/workflows/ci-sync.yml b/.github/workflows/ci-sync.yml index bc95437f5..bde1aa6a8 100644 --- a/.github/workflows/ci-sync.yml +++ b/.github/workflows/ci-sync.yml @@ -160,8 +160,22 @@ jobs: echo "::endgroup::" exit 0 else - DIFF_COUNT=$(echo "$RESULT" | python3 -c "import json,sys; print(json.load(sys.stdin)['total_diffs'])") - echo "Still $DIFF_COUNT difference(s) with PR #$PR_NUMBER" + # Name the files, not just a count. + # + # A bare "Still 8 difference(s)" is undiagnosable: it gives no + # way to tell a genuine divergence from a PR head this run + # fetched before the other repo's push had propagated, which is + # a real race when both PRs are pushed within seconds of each + # other. The target-branch comparison already lists its files; + # this one now does too. + echo "$RESULT" | python3 -c " + import json, sys + data = json.load(sys.stdin) + print(f\"Still {data['total_diffs']} difference(s) with this PR:\") + for surface, info in data['surfaces'].items(): + for d in info.get('diffs', []): + print(f\" {d['reason']}: src/{d['file']}\") + " fi echo "::endgroup::" diff --git a/.github/workflows/ci-unit-tests.yml b/.github/workflows/ci-unit-tests.yml index ef15d6f76..860e7d615 100644 --- a/.github/workflows/ci-unit-tests.yml +++ b/.github/workflows/ci-unit-tests.yml @@ -2,11 +2,14 @@ name: CI - Unit Tests on: workflow_dispatch: + # Called from `ci.yml` on every pull request. + workflow_call: jobs: unit-tests: name: Unit Tests + Coverage runs-on: ubuntu-latest + # Required check on `development` — a red suite blocks the merge. steps: - name: Checkout repository uses: actions/checkout@v4 diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 1fc269fd4..ed345d16a 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -16,6 +16,9 @@ jobs: lint: uses: ./.github/workflows/ci-lint.yml + unit-tests: + uses: ./.github/workflows/ci-unit-tests.yml + format: needs: [architecture, build-check, lint] uses: ./.github/workflows/ci-format.yml @@ -27,4 +30,8 @@ jobs: complete-build: needs: [sync] + # Full 3-OS packaging is release work: the tag-triggered release + # workflow builds it for real, so PRs into development skip it and + # only the promotion PRs into main still prove the app packages. + if: github.base_ref == 'main' uses: ./.github/workflows/build.yml diff --git a/.gitignore b/.gitignore index ff41e9cd4..847394b14 100644 --- a/.gitignore +++ b/.gitignore @@ -52,9 +52,30 @@ resources/st-compiler/**.spec # External tool binaries (downloaded by scripts/download-binaries.ts) # arduino-cli stays committed since we don't own its releases resources/strucpp/ +resources/bin/** +# Git will not re-include a file whose ancestor directory is excluded, and `bin/**` excludes +# the platform/arch directories too — so the two exceptions below only bite once these are +# re-included. Without them a NEWLY downloaded arduino-cli is invisible to git, and the six +# committed ones survive only because they were already tracked when the rule landed. +!resources/bin/ +!resources/bin/*/ +!resources/bin/*/*/ +!resources/bin/*/*/arduino-cli +!resources/bin/*/*/arduino-cli.exe +# A local build leaves xml2st, iec2c/iec2iec and .binary-metadata.json here, plus +# timestamped .xml2st-backup-* copies. They are downloaded artefacts, not sources — +# 123 MB of them were swept into a PR by a `git add -A` before this rule existed. +resources/sources/MatIEC/ # Playwright /test-results/ playwright-report /blob-report/ /playwright/.cache/ + +# Claude Code session state (a running session's id and pid — never a project artefact) +.claude/scheduled_tasks.lock + +# Development build of the headless CLI (see webpack.config.cli.dev.ts) +openplc-cli.dev.js +openplc-cli.dev.js.map diff --git a/CLAUDE.md b/CLAUDE.md index 3226b1aac..2f21fc5cb 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -160,6 +160,7 @@ const createPou = useOpenPLCStore((s) => s.projectActions.createPou) | `console` | Log output | | `library` | System + user function block libraries | | `file` | File save states (dirty tracking) | +| `print` | Print/export-to-PDF selection, render mode, page policy, page setup | | `ai`, `history`, `modal`, `readme`, `search`, `shared`, `version-control`, `webrtc` | Supporting features | **Conventions:** @@ -217,6 +218,37 @@ Structured Text is generated in-process by the TS transpiler legacy `xml2st` binary path has been retired. `XmlGenerator` is kept only for the "Export Project as XML" feature. +**The Modbus block of `defines.h` has two sources**, split along the ownership +boundary (`src/backend/shared/compile/steps/modbus-defines.ts`): + +- the project's Modbus `PLCServer` says **what is served** — the transports, + the slave id, the TCP port, and the speed of a UART of its own. On every + target, baremetal included. +- the board's VPP screens say **what it is served over** — the default UART's + speed, the RS-485 pin, the network. `serial` and `network` sections. + +The default UART's speed is the one thing on that line the server does not own, +because it is the editor's own link and a UART has one speed. `resolveServerBaud` +in `middleware/shared/utils/modbus-server-profile/baud.ts` decides between the +two, and the SCREEN calls it as well — a hook cannot import `backend/shared`, and +two copies of that chain is how a screen ends up disagreeing with the firmware. + +A firmware build serves exactly one slave (`modbus.slaveid` is a single global), +so `selectModbusServer` refuses a build with more than one enabled server and +names them. The editor still allows several, because a project moves between +targets. + +The editor's own link is deliberately NOT derived from the server. `DEBUG_BAUD` +comes from `screens.serial.baud_rate` — that UART's speed is the package's to +state — and `DEBUG_SLAVE` is the constant 1, so a project with no Modbus server +still debugs and changing a server's slave id is not an access event. + +On the default UART the firmware answers **both** ids and routes by function +code: `0x41`-`0x4B` on the editor's, everything on the server's. So a server +sharing that port keeps whatever id the user picked, and `MBSERIAL_SLAVE` is the +server's on every port. A board flashed before 4.3.0 may answer the editor on +another id; Connect tries 1 first and the project's legacy id after. + Platform-specific binaries in `/resources/bin/[platform]/[arch]/`. Board configs in `src/backend/shared/firmware/hals.json`. ### Debugging @@ -231,14 +263,23 @@ Platform-specific binaries in `/resources/bin/[platform]/[arch]/`. Board configs - **Framework:** Jest + jsdom - **Test files:** `*.test.ts(x)`, `*.spec.ts(x)`, or `__tests__/` directories - **E2E:** Playwright (`/e2e`), Chromium only -- **Coverage thresholds** (100% functions/lines/statements required): - - `src/frontend/store/slices/` - - `src/frontend/utils/` - - `src/backend/shared/` - - `src/middleware/adapters/editor/` +- **Coverage thresholds** — per-directory and aggregate, enforced by + `jest.config.json`. Branch coverage is not gated anywhere (`branches: 0`); + read the config for the current numbers rather than trusting this table: + + | Directory | statements | lines | functions | + |---|---|---|---| + | `src/frontend/store/slices/` | 97 | 98 | 98 | + | `src/frontend/utils/` | 95 | 95 | 97 | + | `src/backend/shared/` | 75 | 77 | 76 | + | `src/middleware/adapters/editor/` | 85 | 85 | 87 | + + They are floors for the directory as a whole, not a per-file rule, so a new + file is not obliged to reach 100% on its own — but it must not drag the + directory below the floor. - **Mocks:** `configs/mocks/` for file stubs; `identity-obj-proxy` for CSS modules -When adding new code to covered directories, you must add corresponding tests to maintain 100% coverage. +When adding new code to a covered directory, add tests with it: the directory has to stay above its floor, and an untested file is what pushes it under. ## Code Style @@ -278,6 +319,7 @@ When adding new code to covered directories, you must add corresponding tests to - **Socket.io** for real-time communication - **Winston** for structured logging (main process) - **serialport** for serial communication +- **pdf-lib** + **@pdf-lib/fontkit** for PDF export (print/export-to-PDF) ## Important Patterns @@ -290,11 +332,26 @@ The About modal renders it directly; the web build writes it into `version.json` **Bump `APP_VERSION` — never `package.json` alone.** Make the identical one-line edit in BOTH repos, and set `package.json.version` to the same value in both so they can't drift. Roles: `APP_VERSION` is what the user sees in the About dialog; -`package.json.version` is what electron-builder stamps on the desktop binary and -what the release tag `vX.Y.Z` must match. Bumping only `package.json` leaves the -About dialog stuck on the old version — **this mistake shipped 4.2.7 and 4.2.8 -with About still showing 4.2.6.** If the two ever disagree, `APP_VERSION` is -authoritative; fix it to match. +`package.json.version` is what a local build stamps. Bumping only `package.json` +leaves the About dialog stuck on the old version — **this mistake shipped 4.2.7 +and 4.2.8 with About still showing 4.2.6.** If those two disagree, `APP_VERSION` +is authoritative; fix `package.json` to match. + +**The release tag must equal `APP_VERSION` too.** `release.yml` stamps the binary +from the tag while About renders `APP_VERSION`, so tagging `v4.3.0` while +`APP_VERSION` is 4.2.12 ships an installer named 4.3.0 whose About dialog says +4.2.12 — the same failure in a different disguise. Check before tagging: a pushed +tag cannot be "fixed to match". + +In the editor, electron-builder reads **`release/app/package.json`**, not the root +one — `electron-builder.json` sets `directories.app` to `release/app`. The release +workflow runs `npm version ` at the root AND in `release/app`, so a +*tag-triggered* release is always correct. Two cases are not: a LOCAL package +build takes whatever `release/app/package.json` says, and a `workflow_dispatch` +run with an empty `version` input falls back to root `package.json` +(`release.yml`, version resolution). Use `npm version --no-git-tag-version +--allow-same-version` in both places rather than editing by hand: it updates each +lockfile too, which hand edits miss (see DOPE-601). Release order: bump `APP_VERSION` + `package.json` (both repos, same value) → PR to `development` → merge → promote `development`→`main` on both → tag `vX.Y.Z` on @@ -313,7 +370,7 @@ on its `main` push. (Ideally `package.json.version` should be derived from 1. Create `types.ts`, `slice.ts`, `index.ts` in `src/frontend/store/slices//` 2. Add the slice type to `RootState` union in `src/frontend/store/index.ts` 3. Spread the slice creator in `createOpenPLCStore()` -4. Add tests to maintain 100% coverage +4. Add tests with it, so the directory stays above its coverage floor ### When adding a new POU language or type: 1. Update project parser (`src/backend/shared/utils/parse-project-files.ts`) diff --git a/binary-versions.json b/binary-versions.json index d43af3c10..802d7919b 100644 --- a/binary-versions.json +++ b/binary-versions.json @@ -1,6 +1,6 @@ { "strucpp": { - "version": "v0.6.2", + "version": "v0.6.8", "repository": "Autonomy-Logic/STruCpp" } } diff --git a/configs/mocks/monaco-editor-mock.js b/configs/mocks/monaco-editor-mock.js new file mode 100644 index 000000000..61969944c --- /dev/null +++ b/configs/mocks/monaco-editor-mock.js @@ -0,0 +1,7 @@ +// monaco-editor ships no CommonJS entry point (package.json has no "main", +// only an ESM "module" field), so plain `require.resolve('monaco-editor')` +// fails under Jest — this mapping gives it a real, resolvable path so +// `jest.mock('monaco-editor', factory)` in individual test files can +// register their own factory instead of hitting a MODULE_NOT_FOUND error. +// Tests that don't provide their own factory get this harmless stub. +export const editor = { tokenize: () => [] } diff --git a/configs/webpack/webpack.config.cli.dev.ts b/configs/webpack/webpack.config.cli.dev.ts new file mode 100644 index 000000000..932301a39 --- /dev/null +++ b/configs/webpack/webpack.config.cli.dev.ts @@ -0,0 +1,64 @@ +/** + * Development build of the headless CLI. + * + * Two things make this a config of its own rather than another entry on the dev + * main build, and both are path resolution rather than bundling: + * + * - `NODE_ENV=development`, because `CompilerModule` chooses between + * `process.cwd()/resources` and `process.resourcesPath` from it, and that + * choice is baked in at build time. A production-built CLI run from a dev + * checkout looks for arduino-cli inside Electron.app and fails with ENOENT. + * - Output at the REPO ROOT, because Electron sets `app.getAppPath()` to the + * directory of the script it is handed, and the compiler resolves the + * STruC++ runtime headers as `getAppPath()/node_modules/strucpp/...`. The + * dev GUI is launched as `electron .` from the root, so the root is what + * the GUI resolves — and matching it is the whole point of the CLI. + * + * The packaged CLI has neither problem: `app.isPackaged` sends every one of + * these lookups to `process.resourcesPath`. + */ + +import webpack from 'webpack' +import { merge } from 'webpack-merge' + +import devMainConfig from './webpack.config.main.dev' +import webpackPaths from './webpack.paths' + +const configuration: webpack.Configuration = { + output: { + path: webpackPaths.rootPath, + filename: '[name].js', + library: { type: 'umd' }, + }, + + // One file, no chunks. Both matter because the output directory is the repo + // ROOT: merging would keep the dev main build's `main`/`preload` entries and + // emit them here too, and code splitting would scatter vendor chunks + // alongside them — which is exactly the litter this replaced. + optimization: { splitChunks: false, runtimeChunk: false }, + + // `entry.ts` reaches both roles through dynamic imports, which webpack would + // split into sibling chunk files next to this bundle in the repo root. Folded + // back into the one file instead — the point of this config is a single + // artifact you can hand to `electron`. + plugins: [new webpack.optimize.LimitChunkCountPlugin({ maxChunks: 1 })], +} + +const merged = merge(devMainConfig, configuration) + +export default { + ...merged, + // Assigned after the merge: webpack-merge UNIONS `entry` objects, so the dev + // main build's entries would survive an override expressed inside the merge. + // `entry.ts`, NOT `cli/main.ts` — the same entry the packaged binary runs. + // + // Entering at `cli/main.ts` skipped the argv dispatcher, and with it two + // things that only exist there: the Linux re-exec that supplies the headless + // Chromium switches, and the handler that turns a failure to LOAD the CLI + // into an exit instead of a modal error dialog nobody can click. Both were + // therefore untestable with the bundle used to test everything else — a dev + // build that starts differently from the shipped one is a dev build that can + // pass while the product hangs. Costs `--cli` on every dev invocation, which + // is what the packaged binary needs anyway. + entry: { 'openplc-cli.dev': `${webpackPaths.srcPath}/main/entry.ts` }, +} diff --git a/configs/webpack/webpack.config.main.prod.ts b/configs/webpack/webpack.config.main.prod.ts index c47641dca..c57b40f27 100644 --- a/configs/webpack/webpack.config.main.prod.ts +++ b/configs/webpack/webpack.config.main.prod.ts @@ -25,7 +25,11 @@ const configuration: webpack.Configuration = { target: 'electron-main', entry: { - main: join(webpackPaths.srcMainPath, 'main.ts'), + // `entry.ts`, not `main.ts`: a packaged Electron app always runs + // `package.json.main`, so the GUI and the headless CLI (DOPE-567) have to + // ship in one binary with argv deciding which starts. It imports the GUI + // only when this is not a `--cli` run. + main: join(webpackPaths.srcMainPath, 'entry.ts'), preload: join(webpackPaths.srcMainPath, 'modules/preload/preload.ts'), }, diff --git a/configs/webpack/webpack.config.renderer.dev.dll.ts b/configs/webpack/webpack.config.renderer.dev.dll.ts index 8d6627374..4a340f089 100644 --- a/configs/webpack/webpack.config.renderer.dev.dll.ts +++ b/configs/webpack/webpack.config.renderer.dev.dll.ts @@ -41,7 +41,18 @@ const configuration: webpack.Configuration = { // source code only consumes them via subpath imports (e.g. // `browser-basedpyright` ships only the worker bundle under // `dist/` and is loaded through `?url`). - renderer: Object.keys(dependencies || {}).filter((name) => name !== 'browser-basedpyright'), + // + // `pdfjs-dist` DOES resolve (it has `main`), but must be excluded for a + // different reason: we `import('pdfjs-dist')` for its main-thread API + // *and* load `pdf.worker.min.mjs` separately via `?url` as an + // independent Worker. Pre-bundling the main API into the DLL creates a + // second, separate module instantiation of pdf.js alongside the one in + // the renderer bundle, which breaks the API/Worker handshake pdf.js + // relies on internally — surfaces as cryptic runtime errors deep in the + // worker (e.g. a hash helper missing a method during fingerprint + // computation), not a load failure. Same class of problem as the + // browser-basedpyright exclusion above, different root cause. + renderer: Object.keys(dependencies || {}).filter((name) => name !== 'browser-basedpyright' && name !== 'pdfjs-dist'), }, output: { diff --git a/docs/CLI.md b/docs/CLI.md new file mode 100644 index 000000000..f16f0a39e --- /dev/null +++ b/docs/CLI.md @@ -0,0 +1,361 @@ +# openplc-cli + +The editor's operations, headless: create a project, compile it, upload it to a +target, and drive a live debug session. Every command runs the same code the GUI +control it mirrors runs, so a test that passes here is testing the editor and not +a parallel implementation. + +| GUI control | Command | +| ----------------------------- | ---------------------------------- | +| Build | `openplc-cli compile ` | +| Build & Upload | `openplc-cli upload ` | +| Search / serial-port dropdown | `openplc-cli devices` | +| Debug | `openplc-cli debug open …` | +| Start / Stop | `openplc-cli debug start` / `stop` | +| Variable poll, force dialog | `openplc-cli debug read` / `force` | + +## Installing + +The command is a small shim on your PATH that runs the app with `--cli`. The app +installs it **on first run**, so launching OpenPLC Editor once is usually all it +takes. `openplc-cli install-cli` does it explicitly — for a CI image that never +opens the GUI, or after the app moves. + +It goes in the first **user-writable** directory it finds, preferring one already +on your PATH: + +| Platform | Directories tried | +| ------------ | ------------------------------------- | +| macOS, Linux | `~/.local/bin`, then `~/bin` | +| Windows | `%LOCALAPPDATA%\Programs\openplc-cli` | + +Nothing is installed to a privileged location, so no administrator password is +ever requested. If the chosen directory is not on your PATH, the command prints +the one line to add — on Windows the per-user PATH is updated for you, and a new +terminal picks it up. + +### macOS + +Install OpenPLC Editor into `/Applications` first, then open it once. + +Running from the mounted `.dmg` cannot work: the shim would point inside the disk +image and break the moment it is ejected, so the app says so instead of +installing something that will fail later. The same applies when macOS has +quarantined the app — launching it straight out of `Downloads` makes Gatekeeper +run it from a randomised temporary path that changes every launch. + +### Linux + +The editor ships as an AppImage. The image is mounted at a fresh temporary path +on every launch, so the shim points at the **`.AppImage` file** instead, which is +wherever you keep it. Move the file to its final location before installing; if +you move it later, run `install-cli` again (or just launch the app, which +notices the change). + +```sh +chmod +x 'OpenPLC Editor-4.2.2.AppImage' +./'OpenPLC Editor-4.2.2.AppImage' --cli install-cli +openplc-cli --version +``` + +Launching the GUI once does the same thing, and is the simplest route on a +desktop. + +You do **not** need `xvfb-run`, and you do not need to pass Chromium switches. +A CLI run needs `--ozone-platform=headless`, because Electron initialises its +display layer during startup and exits without one. The generated shim passes it, +and a direct `--cli` call re-executes itself with it — so an SSH session or a CI +runner with no display works as-is. + +`--no-sandbox` is a separate matter, and it is **not** passed for you. Chromium's +sandbox is left on wherever it can start, which is everywhere unprivileged user +namespaces are available — any current desktop kernel. The exception is an +environment where they are not, Docker's default being the notable one: Chromium +falls back to its SUID sandbox helper and aborts _before any of our code runs_, +so no relaunch can rescue it and the call has to carry the switch itself. + +Pass it once, to install, and it is remembered: + +```sh +./'OpenPLC Editor-4.2.2.AppImage' --no-sandbox --cli install-cli +openplc-cli devices # no switches needed from here on +``` + +`install-cli` records that the installing call ran without the sandbox and writes +`--no-sandbox` into the shim, so later `openplc-cli` calls in that container keep +working. A desktop install writes a shim **without** it, and keeps the sandbox — +which is the point: the switch follows the environment that needs it instead of +being handed to every Linux user. Both cases are verified in a container, with +and without `--security-opt seccomp=unconfined`. + +### Windows + +Run the installer, then launch the editor once. `openplc-cli.cmd` is placed in +`%LOCALAPPDATA%\Programs\openplc-cli` and that directory is added to your user +PATH; open a new terminal afterwards. + +Verified on Windows 11 (24H2): `--help` exits 0, no arguments and an unknown +command exit 2, a missing project exits 3, `--version` and `devices` each write +one JSON document to stdout, the usage text goes to stderr, and a closed pipe +returns in ~3s instead of hanging. The shim is invoked by name from a new shell: + +```bat +openplc-cli --version +openplc-cli devices > devices.json +``` + +> **Calling it from a `.bat` / `.cmd` script needs `call`.** The shim is a batch +> file, and batch invoking batch without `call` TRANSFERS control instead of +> returning — the rest of your script silently never runs, and you never see +> `%ERRORLEVEL%`. This is how every `.cmd` wrapper behaves (`npm.cmd` included), +> not something specific to this one: +> +> ```bat +> call openplc-cli compile "C:\path\to\project" +> if errorlevel 1 exit /b %ERRORLEVEL% +> ``` +> +> From PowerShell, `cmd`'s interactive prompt, or any non-batch caller, the plain +> form is correct and `$LASTEXITCODE` / `%ERRORLEVEL%` is set as expected. + +> Console output from a GUI-subsystem executable is not attached to an +> interactive terminal on Windows. Redirection and piping work +> (`openplc-cli devices > devices.json`), which is what a test harness does. + +## In a build pipeline + +Verified in a `debian:12` container as root and as an unprivileged user, with no +`DISPLAY`, no TTY and stdout piped. + +You do not need a display server or `xvfb-run`. You do need Electron's shared +libraries, which a slim base image will not have: + +```dockerfile +RUN apt-get update && apt-get install -y --no-install-recommends \ + libgtk-3-0 libnss3 libasound2 libgbm1 libxss1 libxtst6 \ + libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2 libxkbcommon0 \ + libxcomposite1 libxdamage1 libxfixes3 libxrandr2 \ + libpango-1.0-0 libcairo2 libatspi2.0-0 \ + && rm -rf /var/lib/apt/lists/* +``` + +Then, once per image: + +```sh +./OpenPLC-Editor.AppImage --no-sandbox --cli install-cli +``` + +`--no-sandbox` is needed here and not on a desktop: container runtimes usually +block unprivileged user namespaces, so Chromium falls back to its SUID sandbox +helper and refuses to start. The generated shim carries the switch, so nothing +after this call needs it. + +A build step then looks like any other: + +```sh +openplc-cli compile ./my-project --target "OpenPLC Runtime v4" # exit 0, or 4 on a compile error +openplc-cli upload ./my-project --host "$PLC_HOST" --yes # --yes stops a RUNNING PLC first +``` + +Reading the result: + +```sh +BUILD=$(openplc-cli compile ./my-project --target "OpenPLC Runtime v4") || exit $? +echo "$BUILD" | jq -r '.buildDirectory' +``` + +`stdout` is one JSON document, so `jq` needs no filtering; progress and Chromium's +own D-Bus complaints go to `stderr`. Gate on the exit code — 4 is a compile +error, 5 a connection problem, 7 the device refusing — rather than on log text. + +### First run on a clean machine + +The CLI creates the editor's user-data scaffolding itself (settings, history, the +arduino-cli config), so a fresh container needs no warm-up step. Board packages +are a different matter: a target from an installed `.vpp` package is only +available if that package is installed in the image's user-data directory, which +`--user-data ` can point at a prepared one. + +## Output contract + +Machine-readable when stdout is not a terminal, human-readable when it is; +`--json` / `--no-json` override. + +- In JSON mode stdout carries **exactly one** JSON document — the result. Progress + and diagnostics go to stderr, so `JSON.parse(stdout)` needs no filtering. +- No ANSI, spinners or progress bars in JSON mode. +- Values carry their type, so `0` is unambiguously `BOOL FALSE` or `INT 0`. + 64-bit integers arrive as decimal strings, which an IEEE double cannot hold. +- Errors are objects with a stable `code`. The prose may be reworded; the code + will not. + +### Exit codes + +| Code | Meaning | +| ---- | ------------------------------------------------------ | +| 0 | ok | +| 2 | usage — unknown command, missing or malformed argument | +| 3 | not found — project, file or session | +| 4 | compile failed | +| 5 | connection — could not reach the target, or lost it | +| 6 | auth — credentials refused | +| 7 | target error — the device reported failure | +| 8 | timeout | +| 70 | internal — a bug in the CLI | + +## Credentials + +Targets reached through a runtime API need them; a board flashed over USB does +not. + +```sh +--credentials user:pass # or --user / --password +OPENPLC_CREDENTIALS=user:pass # or OPENPLC_USER + OPENPLC_PASSWORD +``` + +Prefer the environment form in CI: a flag lands in shell history and job logs. + +## Debug sessions + +A debug session is long-lived; a test step is one process. So `debug open` starts +a background session and returns a `session_id`, and every other command is a +cheap one-shot that attaches to it — no reconnect, no re-verify, no re-upload per +command. + +```sh +openplc-cli debug open ./my-project --target "OpenPLC Runtime v4" \ + --host 10.0.0.10 --credentials user:pass # -> 8df020af1234 + +openplc-cli debug list # every live session +openplc-cli debug read main:counter +openplc-cli debug force main:enable TRUE +openplc-cli debug watch main:counter --interval 100 +openplc-cli debug poll # what was recorded meanwhile +openplc-cli debug close --all +``` + +With one session open, `--session` is optional. With several, it is required. + +### A session closes itself after 30 minutes idle + +This is the one fact a long-running harness has to know, because closing +**releases the session's forces** — mid-test, on live hardware, if the run is +quiet for long enough. + +| | | +| --------------------- | ----------------------------------- | +| default | 30 minutes with no command | +| `--idle-timeout ` | on `debug open`; a different budget | +| `--idle-timeout 0` | never close on idle | + +"Idle" means no command reached the session. Two things deliberately do **not** +count: `watch` sampling in the background (the session is busy, but nobody asked +for anything) and `debug list`, which dials each session to report its state — +polling a list must not keep sessions alive for ever. + +A value that is not a number is a usage error rather than a silent fallback: the +point of naming a timeout is that the default was wrong for this run. + +### Flags, by command + +| Flag | Command | Meaning | +| ---------------------- | ----------------------------------- | --------------------------------------------------------------------------------------------------- | +| `--session ` | any `debug` subcommand | which session, when several are open | +| `--idle-timeout ` | `debug open` | idle budget; `0` disables (see above) | +| `--force-new` | `debug open` | start a session even if one is already open for this project and target | +| `--upload-if-needed` | `debug open` | upload first when the target's program does not match | +| `--var ` | `read`, `force`, `unforce` | the variable, when you would rather not pass it positionally | +| `--value ` | `force` | the value — `16#FF`, `TRUE`, `T#5s`, all as the GUI accepts them | +| `--filter ` | `list-vars` | only variables whose path contains it | +| `--interval ` | `watch` | sampling cadence; floor 20 ms | +| `--since ` | `poll` | only samples after this sequence number | +| `--keep-forces` | `close` | leave forced variables pinned | +| `--all` | `close` | every session, not just one | +| `--keep-going` | `exec` | run the remaining lines after one fails | +| `--force` | `create` | overwrite an existing destination | +| `--clean` | `compile`, `upload` | discard the build directory first | +| `-y`, `--yes` | `upload` | skip the confirmation | +| `--create-user` | `upload`, `debug open` | permission to create the FIRST user on a fresh runtime v4, using the credentials you already passed | + +`watch` **records** into a buffer inside the session rather than streaming, so a +transient that happens between two of your own commands is still there when you +`poll`. + +`debug repl` is the same protocol with a prompt, for a human at a terminal. For a +script use `debug exec`, which reads one command per line — the REPL refuses a +pipe rather than dropping commands, which is what readline does with buffered +input. + +### The session protocol + +`debug exec` and `debug repl` are two front ends over one protocol, and it is +open for a third. A session listens on a per-session socket: + +| | | +| ------- | ---------------------------------------------------------------- | +| POSIX | `/User/cli-sessions/.sock` (a unix socket) | +| Windows | `\\.\pipe\openplc-debug-` (a named pipe) | + +`debug list` prints the ids; the registry file beside the socket +(`.json`) holds the pid, target and project path. + +**Framing.** One JSON object per line, UTF-8, `\n`-terminated — NDJSON in both +directions. Nothing is streamed unsolicited: every line the session sends answers +a line it received. + +**Requests** carry an `id` you choose and a `kind`: + +```json +{"id":1,"kind":"read","names":["main:counter","main:enable"]} +{"id":2,"kind":"force","name":"main:enable","value":"TRUE"} +{"id":3,"kind":"watch","names":["main:counter"],"intervalMs":100} +{"id":4,"kind":"poll","since":42} +{"id":5,"kind":"close","releaseForces":true} +``` + +| `kind` | fields | answers with | +| ------------------- | ---------------------------------------------------------------------- | ------------------------------- | +| `status` | `probe?` — true means "only listing", which does not count as activity | `status` | +| `list-vars` | `filter?` | `list-vars` | +| `read` | `names[]` | `read` — `values[]` | +| `force` / `unforce` | `name`, plus `value` for `force` | `force` / `unforce` | +| `start` / `stop` | — | `plc-state` | +| `watch` | `names[]`, `intervalMs?` | `watch` — what is recording | +| `poll` | `since?` (sequence number) | `poll` — `samples[]`, `dropped` | +| `unwatch` | `names?` (all when omitted) | `unwatch` | +| `close` | `releaseForces?` (default true) | `close` — `released[]` | + +**Responses** echo the `id` and discriminate on `ok`: + +```json +{"id":1,"ok":true,"data":{"kind":"read","values":[{"name":"main:counter","type":"INT","value":7,"forced":false}]}} +{"id":2,"ok":false,"error":{"code":"variable_not_found","message":"..."}} +``` + +The `code` values are the stable set the CLI prints (see **Exit codes**); the +prose beside them is not stable. Requests are answered **one at a time, in +order** — the channel underneath is a single request/response link, and the +session serialises its own watch sampling against your commands for that reason. + +A line that is not valid JSON, or not a valid request, is answered with an error +carrying the `id` recovered from the raw text where possible, so a malformed +request fails immediately instead of leaving a client waiting out its timeout. + +### Forcing + +`close` releases the variables the session forced, unless you pass +`--keep-forces`. This is deliberate: forcing lives in the runtime's forced-slot +bitmap and the runtime cannot tell that a debugger went away — it clears forces +only on program unload or stop. A session that exited quietly would leave outputs +pinned on a live PLC. + +`status` reports what this session has forced, which is what `close` will +release. A stop issued from elsewhere (the runtime UI, a mode switch) clears the +runtime's forces without the session knowing, so that list can be stale. + +## Building on a running PLC + +Targets that build on the device refuse while its PLC is RUNNING, exactly as the +editor warns — on-device compilation can stall the build or make the running +program miss scan deadlines. `--yes` / `-y` approves stopping it first, the way +`apt install -y` does. Nothing stops a running PLC without being asked. diff --git a/docs/iec-address-registry.md b/docs/iec-address-registry.md index 445bc9a42..fda5ef35f 100644 --- a/docs/iec-address-registry.md +++ b/docs/iec-address-registry.md @@ -109,6 +109,55 @@ to call on every mutation, on project load, and pre-compile. Determinism (stable order + stable channel order) guarantees reproducible results across sessions, so a re-open never gratuitously renumbers. +### 5.1 Capability scoping vs. unresolved targets + +Allocation is scoped to the consumer kinds the active target supports +(`allocateAddresses`'s `activeKinds`). Deactivating a kind is deliberate and +load-bearing: switching to a board without VPP frees the VPP space, and the +still-active producers compact into it on the next recalculation. + +The invariant that makes that safe: + +> **An unknown target is permissive for allocation and empty for feature +> gating.** + +`resolveTargetCapabilities(undefined)` answers `EMPTY_CAPABILITIES`, which is +correct for gating — never offer an affordance the target can't back. Feeding +that same answer to the allocator is not: an empty `activeKinds` set is +indistinguishable from "this target supports nothing", so **every** consumer +is filtered out, `assignments` comes back empty, and the write-back leaves the +stale addresses in place while reporting success. A board id fails to resolve +whenever the VPP package isn't installed, the project was authored elsewhere, +or the catalogue hasn't loaded yet — all ordinary situations. + +So the store distinguishes the two cases (`allocationCapabilities` / +`activeKindsForAllocation` in the project slice): a target that **answered** is +honoured exactly as declared; a target that **didn't resolve** allocates with +every producer active (`ALL_ADDRESS_PRODUCERS_ACTIVE`). Permissive is the safe +direction — the worst case is compaction for a producer the eventual target +turns out not to support, and selecting that target recalculates anyway. + +**The consequence to be aware of:** a project authored while the target is +unresolved allocates with every producer active, so once the package is +installed and the target resolves, capabilities can shrink and the addresses +**recompact on that first open**. For alias-bound variables that is +transparent — it is the whole reason the registry exists. For a variable bound +to a literal `%addr` the binding does not follow, and the amber +orphan/collision glyph on the location cell is what surfaces it. That is +acceptable, and strictly better than the previous symptom (stale addresses, +reported as success), but it is not derivable from the invariant alone. + +Capability scoping is the **single authority** on which producers are active: +no kind is ever forced on in a provisional pool. That holds because every +producer's creation path is capability-gated in the UI, so "capability off" +and "cannot author this producer" coincide. Remote devices reach that state +through two predicates rather than one — the project type +(`projectCaps.hasRemoteDevices`, false for libraries) and the target +(`modbusTcpRemote || ethercat`, the same predicate the variable-location +dropdown uses). Devices already configured stay **visible** on a target that +can't host them, because the board-switch warning promises they are "disabled +during compilation", not removed; only creating a new one is refused. + ## 6. Aliases and variable binding - **Aliases live only in the registry**, attached to channels. Uniqueness @@ -228,7 +277,15 @@ Shipped on `feat/central-iec-address-registry` (editor + web, byte-identical): Invoked from every producer mutation and on target switch. - **Pins** participate as **fixed constraints** — hardware addresses are never reallocated; their aliases persist per-board and flow through the same - registry uniqueness gate. Nothing to route. + registry uniqueness gate. But a pin edit MOVES those constraints, so + `createNewPin` / `removePin` / `updatePin` drive the central recalculation + whenever the pin address signature changes (alias-only and pin-number-only + edits skip it). Without that, `removePin` slid the freed slot to the end of + the pin block and left it stranded, and `createNewPin` could mint an address + already held by a VPP or Modbus channel — an unreported two-producer + collision. +- **Unresolved targets** allocate permissively rather than as if the target + supported nothing — see §5.1. - **Aliases** resolve to concrete IEC addresses **in the editor** (each variable's `location` is kept resolved); the compiler/runtime are untouched. diff --git a/eslint.config.mjs b/eslint.config.mjs index 4b5f654bd..e0835de2c 100644 --- a/eslint.config.mjs +++ b/eslint.config.mjs @@ -74,6 +74,24 @@ export default tseslint.config( '@typescript-eslint/unbound-method': 'warn', 'simple-import-sort/imports': 'error', 'simple-import-sort/exports': 'error', + // `crypto.randomUUID` is secure-context-only. autonomy-node serves the web + // bundle over plain HTTP, so on a node reached by IP the global is absent and + // the call throws — which is how a build in the web editor once aborted in + // silence. openplc-editor's own renderer always has a secure context, but + // `frontend/` and `middleware/shared/` are byte-identical across the two + // repos, so a call added in either one ships that silent failure in the web + // bundle. One guarded call site did not stop the other 62 from shipping + // unguarded; the rule is what holds the line. Every mint goes through + // `newUuid()`, which names this API nowhere, so the rule needs no exception. + 'no-restricted-properties': [ + 'error', + { + object: 'crypto', + property: 'randomUUID', + message: + 'crypto.randomUUID does not exist outside a secure context (autonomy-node serves over plain HTTP). Use newUuid() from frontend/utils/new-uuid.ts, or let the owning store mint the id.', + }, + ], }, }, eslintConfigPrettier, diff --git a/jest.config.json b/jest.config.json index 7572446f6..264c7ec50 100644 --- a/jest.config.json +++ b/jest.config.json @@ -8,9 +8,11 @@ "moduleNameMapper": { "^@root/(.*)$": "/src/$1", "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "/configs/mocks/fileMock.js", - "\\.(css|less|sass|scss)$": "identity-obj-proxy" + "\\.(css|less|sass|scss)$": "identity-obj-proxy", + "^monaco-editor$": "/configs/mocks/monaco-editor-mock.js" }, "testEnvironment": "jsdom", + "workerIdleMemoryLimit": "1GB", "testEnvironmentOptions": { "url": "http://localhost/" }, @@ -20,7 +22,9 @@ "src/frontend/utils/__tests__/notify-no-write-permission.test.ts", "src/frontend/services/__tests__/export-actions.test.ts", "src/frontend/services/__tests__/import-actions.test.ts", - "src/frontend/components/_organisms/modals/__tests__/confirm-plcopen-import-modal.test.tsx" + "src/frontend/components/_organisms/modals/__tests__/confirm-plcopen-import-modal.test.tsx", + "src/backend/shared/library/__tests__/build-pipeline-real-strucpp.test.ts", + "src/backend/shared/print/__tests__/fixtures/" ], "transformIgnorePatterns": ["node_modules/(?!strucpp)"], "transform": { @@ -35,7 +39,9 @@ "src/frontend/store/slices/**/*.ts", "src/frontend/utils/**/*.ts", "src/backend/shared/**/*.ts", + "src/middleware/shared/**/*.ts", "src/middleware/adapters/editor/**/*.ts", + "src/frontend/hooks/**/*.ts", "!src/**/*.d.ts", "!src/**/__tests__/**", "!src/**/*.{test,spec}.{ts,tsx}", @@ -49,27 +55,39 @@ "coverageThreshold": { "src/frontend/store/slices/": { "branches": 0, - "functions": 100, - "lines": 100, - "statements": 100 + "functions": 98, + "lines": 98, + "statements": 97 }, "src/frontend/utils/": { "branches": 0, - "functions": 100, - "lines": 100, - "statements": 100 + "functions": 97, + "lines": 95, + "statements": 95 }, "src/backend/shared/": { "branches": 0, - "functions": 100, - "lines": 100, - "statements": 100 + "functions": 76, + "lines": 77, + "statements": 75 }, "src/middleware/adapters/editor/": { "branches": 0, - "functions": 100, - "lines": 100, - "statements": 100 + "functions": 87, + "lines": 85, + "statements": 85 + }, + "src/middleware/shared/": { + "branches": 88, + "functions": 89, + "lines": 76, + "statements": 78 + }, + "src/frontend/hooks/": { + "branches": 30, + "functions": 30, + "lines": 35, + "statements": 35 } } } diff --git a/package-lock.json b/package-lock.json index b3dbbd786..21ed3f6a6 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,12 +1,12 @@ { "name": "open-plc-editor", - "version": "4.2.10", + "version": "4.3.0", "lockfileVersion": 3, "requires": true, "packages": { "": { "name": "open-plc-editor", - "version": "4.2.10", + "version": "4.3.0", "hasInstallScript": true, "license": "GPL-3.0", "dependencies": { @@ -15,6 +15,7 @@ "@dnd-kit/sortable": "^10.0.0", "@hookform/resolvers": "^5.1.1", "@monaco-editor/react": "^4.7.0", + "@pdf-lib/fontkit": "^1.1.1", "@radix-ui/react-accordion": "^1.2.11", "@radix-ui/react-checkbox": "^1.3.2", "@radix-ui/react-dialog": "^1.1.14", @@ -56,6 +57,8 @@ "monaco-editor": "^0.54.0", "monaco-editor-webpack-plugin": "^7.1.0", "path-browserify": "^1.0.1", + "pdf-lib": "^1.17.1", + "pdfjs-dist": "6.3.289", "react": "^18.3.1", "react-apexcharts": "^1.7.0", "react-dom": "^18.3.1", @@ -90,6 +93,7 @@ "@teamsupercell/typings-for-css-modules-loader": "^2.5.2", "@testing-library/jest-dom": "^6.6.4", "@testing-library/react": "^14.0.0", + "@testing-library/user-event": "^14.6.1", "@types/diff": "^7.0.2", "@types/eslint": "^9.6.1", "@types/jest": "^30.0.0", @@ -5135,6 +5139,256 @@ "react-dom": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0" } }, + "node_modules/@napi-rs/canvas": { + "version": "1.0.8", + "resolved": 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"https://registry.npmjs.org/@pkgjs/parseargs/-/parseargs-0.11.0.tgz", @@ -9625,6 +9906,20 @@ "react-dom": "^18.0.0" } }, + "node_modules/@testing-library/user-event": { + "version": "14.6.6", + "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-14.6.6.tgz", + "integrity": "sha512-Jbs9FpkkIDw8FgSc6kOVsOv8JuuqGAL7J4X1oot77JxAoDlkNn2GRkd0aYRVuQ+pVQAiHWVkE4rX/dkF5fBiCw==", + "dev": true, + "license": "MIT", + "engines": { + "node": ">=12", + "npm": ">=6" + }, + "peerDependencies": { + "@testing-library/dom": ">=7.21.4" + } + }, "node_modules/@tootallnate/once": { "version": "2.0.0", "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz", @@ -24373,7 +24668,6 @@ "version": "1.0.11", "resolved": "https://registry.npmjs.org/pako/-/pako-1.0.11.tgz", "integrity": "sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==", - "dev": true, "license": "(MIT AND Zlib)" }, "node_modules/param-case": { @@ -24631,6 +24925,36 @@ "node": ">= 0.10" } }, + "node_modules/pdf-lib": { + "version": "1.17.1", + "resolved": "https://registry.npmjs.org/pdf-lib/-/pdf-lib-1.17.1.tgz", + "integrity": "sha512-V/mpyJAoTsN4cnP31vc0wfNA1+p20evqqnap0KLoRUN0Yk/p3wN52DOEsL4oBFcLdb76hlpKPtzJIgo67j/XLw==", + "license": "MIT", + "dependencies": { + "@pdf-lib/standard-fonts": "^1.0.0", + "@pdf-lib/upng": "^1.0.1", + "pako": "^1.0.11", + "tslib": "^1.11.1" + } + }, + "node_modules/pdf-lib/node_modules/tslib": { + "version": "1.14.1", + "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz", + "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==", + "license": "0BSD" + }, + "node_modules/pdfjs-dist": { + "version": "6.3.289", + "resolved": "https://registry.npmjs.org/pdfjs-dist/-/pdfjs-dist-6.3.289.tgz", + "integrity": "sha512-ZHjSVpDa3D6izMq8/04lvkhkATUmL9px6ChPaXc1k6nU2Mrhlg1/7F0bdUqCwUjw3NsPTfPZsMDUU6ZIcRaeQw==", + "license": "Apache-2.0", + "engines": { + "node": ">=22.13.0 || >=24" + }, + "optionalDependencies": { + "@napi-rs/canvas": "^1.0.0" + } + }, "node_modules/pe-library": { "version": "0.4.1", "resolved": "https://registry.npmjs.org/pe-library/-/pe-library-0.4.1.tgz", diff --git a/package.json b/package.json index d3a908a27..be1674edd 100644 --- a/package.json +++ b/package.json @@ -1,7 +1,7 @@ { "name": "open-plc-editor", "description": "OpenPLC Editor - IDE capable of creating programs for the OpenPLC Runtime", - "version": "4.2.11", + "version": "4.3.0", "license": "GPL-3.0", "author": { "name": "Autonomy Logic" @@ -11,6 +11,10 @@ "build": "concurrently \"npm run build:main\" \"npm run build:renderer\"", "build:dll": "cross-env NODE_ENV=development TS_NODE_TRANSPILE_ONLY=true webpack --config ./configs/webpack/webpack.config.renderer.dev.dll.ts", "build:main": "cross-env NODE_ENV=production TS_NODE_TRANSPILE_ONLY=true webpack --config ./configs/webpack/webpack.config.main.prod.ts", + "build:cli": "npm run build:main", + "build:cli:dev": "cross-env NODE_ENV=development TS_NODE_TRANSPILE_ONLY=true webpack --config ./configs/webpack/webpack.config.cli.dev.ts", + "cli": "electron ./release/app/dist/main/main.js --cli", + "cli:dev": "electron ./openplc-cli.dev.js --cli", "build:renderer": "cross-env NODE_ENV=production TS_NODE_TRANSPILE_ONLY=true webpack --config ./configs/webpack/webpack.config.renderer.prod.ts", "lint": "cross-env NODE_ENV=development eslint ./src/**/*.{ts,tsx}", "lint:fix": "cross-env NODE_ENV=development eslint ./src/**/*.{ts,tsx} --fix", @@ -25,7 +29,7 @@ "start:renderer": "cross-env NODE_ENV=development TS_NODE_TRANSPILE_ONLY=true webpack serve --config ./configs/webpack/webpack.config.renderer.dev.ts", "dev": "cross-env PORT=1313 ts-node scripts/check-port-in-use.js && npm run prestart && concurrently -k \"npm run start:renderer\" \"cross-env PORT=1313 electronmon .\"", "start:preload": "cross-env NODE_ENV=development TS_NODE_TRANSPILE_ONLY=true webpack --config ./configs/webpack/webpack.config.preload.dev.ts", - "test": "jest --collectCoverage", + "test": "jest --collectCoverage --maxWorkers=2", "test:watch": "jest --watch --no-coverage", "test:e2e": "npm run build && npx playwright test", "validate:arch": "npx tsx src/__architecture__/validate.ts", @@ -38,6 +42,7 @@ "@dnd-kit/sortable": "^10.0.0", "@hookform/resolvers": "^5.1.1", "@monaco-editor/react": "^4.7.0", + "@pdf-lib/fontkit": "^1.1.1", "@radix-ui/react-accordion": "^1.2.11", "@radix-ui/react-checkbox": "^1.3.2", "@radix-ui/react-dialog": "^1.1.14", @@ -79,6 +84,8 @@ "monaco-editor": "^0.54.0", "monaco-editor-webpack-plugin": "^7.1.0", "path-browserify": "^1.0.1", + "pdf-lib": "^1.17.1", + "pdfjs-dist": "6.3.289", "react": "^18.3.1", "react-apexcharts": "^1.7.0", "react-dom": "^18.3.1", @@ -113,6 +120,7 @@ "@teamsupercell/typings-for-css-modules-loader": "^2.5.2", "@testing-library/jest-dom": "^6.6.4", "@testing-library/react": "^14.0.0", + "@testing-library/user-event": "^14.6.1", "@types/diff": "^7.0.2", "@types/eslint": "^9.6.1", "@types/jest": "^30.0.0", diff --git a/release/app/package-lock.json b/release/app/package-lock.json index 360c060af..fa8fb892f 100644 --- a/release/app/package-lock.json +++ b/release/app/package-lock.json @@ -1,12 +1,12 @@ { "name": "open-plc-editor", - "version": "4.1.4", + "version": "4.3.0", "lockfileVersion": 3, "requires": true, "packages": { "": { "name": "open-plc-editor", - "version": "4.1.4", + "version": "4.3.0", "hasInstallScript": true, "license": "MIT", "dependencies": { diff --git a/release/app/package.json b/release/app/package.json index e2f51913f..32a87304e 100644 --- a/release/app/package.json +++ b/release/app/package.json @@ -1,6 +1,6 @@ { "name": "open-plc-editor", - "version": "4.2.2", + "version": "4.3.0", "description": "OpenPLC Editor - IDE capable of creating programs for the OpenPLC Runtime", "license": "MIT", "author": { diff --git a/resources/sources/Baremetal/ARCHITECTURE.md b/resources/sources/Baremetal/ARCHITECTURE.md index a9dcdf184..a734448f2 100644 --- a/resources/sources/Baremetal/ARCHITECTURE.md +++ b/resources/sources/Baremetal/ARCHITECTURE.md @@ -45,7 +45,7 @@ calls `mbtask()` once per scan cycle. | **`modbus_frame.*`** | The **seam**: the global `mb_frame` / `mb_frame_len` buffer, the `modbus` instance (slave id + register banks) and `exceptionResponse()`. Every transport fills it, every handler writes into it. | — | `types` | | **`modbus_crc.*`** | Modbus RTU CRC-16 (`calcCrc`) + the two lookup tables, defined **once** in the `.cpp` (they used to live in a header → one flash copy per TU). | — (RTU) | `frame` | | **`modbus_registers.*`** | Register store + the standard **operation** FCs (`0x01`–`0x10`): `init_mbregs`, `get/write_discrete`, `read*`/`write*`. Compiled out of debug-only builds. | `MODBUS_ENABLED` | `frame` | -| **`modbus_debug.*`** | The always-on **debugger** FCs (`0x41`–`0x48`): info / set / get / md5 / status / version / board-id. Growth home for future custom FCs (e.g. the `0x49+` licensing set). | — | `frame`, `arduino_runtime_glue`, `ArduinoUniqueID` | +| **`modbus_debug.*`** | The always-on **debugger** FCs (`0x41`–`0x48`): info / set / get / md5 / status / version / device-id. Growth home for future custom FCs (e.g. the `0x49+` licensing set). | — | `frame`, `arduino_runtime_glue`, `license_gate` | | **`modbus_pdu.*`** | The **protocol** layer: `process_mbpacket()` dispatches each FC to its handler, and it owns the **per-FC frame shape** — `mb_pdu_request_len()` (RTU length by FC) and `mb_pdu_skips_crc()` (which FCs bypass CRC). Single source of truth for "the set of function codes". | — | `registers`, `debug` | | **`modbus_serial.*`** | The **RTU** transport (single- and dual-serial). Declared-length framing (robust over USB-CDC), one-byte resync, RS485 tx-enable timing, per-port RX assembly buffers. | `MB_SERIAL_ACTIVE` | `pdu`, `crc`, `frame` | | **`modbus_tcp.*`** | The **TCP** transport (Ethernet / WiFi / ESP ETH). Brings the network stack up, accepts up to `MAX_SRV_CLIENTS`, services MBAP-framed requests. | `MBTCP` | `pdu`, `frame` | @@ -79,6 +79,14 @@ composite gates in `modbus_config.h`: `mb_pdu_request_len()` how many bytes the frame should be (derived per FC). 3. Unless the FC is a debug FC (`mb_pdu_skips_crc()`), validate the CRC with `modbus_crc::calcCrc()`. + + Step 2 accepts **two** slave ids on this port: the Modbus server's, and + `MB_EDITOR_SLAVE` for the editor's own link. A frame that matched only the + editor's id must carry an editor function code (`mb_pdu_is_editor_fc()`, + `0x41`-`0x4B`) or it is dropped in silence — the channel is private, and an + exception would tell a bus scanner the address is live. When the two ids are + equal, which is the default, the server's branch matches first and this costs + nothing. 4. `process_mbpacket()` dispatches: operation FC → `modbus_registers`; debug FC → `modbus_debug`. The response is built back into `mb_frame`. 5. `handle_serial_port` appends the CRC and writes to the serial port. @@ -92,9 +100,12 @@ header (no CRC) instead of RTU framing. ## Invariants 1. **Transports do not know the function-code set.** They ask `modbus_pdu` - (`mb_pdu_request_len` + `mb_pdu_skips_crc`). Adding a function code touches - only `modbus_debug` (the handler) and `modbus_pdu` (dispatch + shape) — never - the transports. + (`mb_pdu_request_len`, `mb_pdu_skips_crc`, `mb_pdu_is_editor_fc`). Adding a + function code touches only `modbus_debug` (the handler) and `modbus_pdu` + (dispatch + shape) — never the transports. The three predicates answer + different questions and are not interchangeable: `mb_pdu_skips_crc` excludes + `0x4B`, which does carry a CRC, so using it as "is this the editor" would make + run/stop unreachable on the editor's id. 2. **`mb_frame` is the one seam.** Every transport fills it, calls `process_mbpacket()`, and reads the response back out. Single-threaded cooperative scheduling means the transports time-slice within a scan; there @@ -112,15 +123,28 @@ header (no CRC) instead of RTU framing. That is the whole surface. `modbus_serial.*` and `modbus_tcp.*` are untouched. -## Known constraint — single-serial + TCP - -`mb_frame` is shared between `handle_tcp()` and the single-serial assembly path. -In **single-serial** builds `mb_frame` doubles as the RX-assembly buffer and -holds a partial RTU/debug frame **across scan cycles**; since `mbtask()` runs -`handle_tcp()` first, an incoming TCP request can clobber that partial frame. -The framing logic resyncs, but the in-flight transaction is lost → intermittent -glitches under concurrent TCP load. Dual-serial + TCP is safe (dedicated RX -buffers; `mb_frame` only transient). The original design assumed a single Modbus -operation transport per board; the editor allowing RTU + TCP together violates -that. Fix is planned separately (dedicated single-serial RX buffer scoped to -`MBSERIAL && MBTCP`). +## Serial and TCP in the same build + +`mb_frame` is the shared process/TX buffer, and it is NOT an assembly buffer for +any port that has to survive a scan cycle alongside TCP. + +The single-serial path used to assemble into `mb_frame` directly. That is only +safe while nothing else writes it between cycles, and TCP does: `mbtask()` runs +`handle_tcp()` first, so an incoming request overwrote a partial serial frame +while `mb_rx_len` still described it. The framing logic resynced a byte at a +time and the in-flight transaction was lost — intermittent, and worst under the +concurrent TCP load a working installation produces. + +Every path now has its own RX assembly buffer wherever it can be raced: + +| Build | Serial assembly | `mb_frame` | +|---|---|---| +| single-serial, no TCP | `mb_frame` in place | assembly + process + TX | +| single-serial + TCP (`MBTCP`) | `mb_rx_single` | process + TX only | +| dual-serial (`MBSERIAL_ON_SECONDARY`) | `mb_rx_dbg`, `mb_rx_rtu` | process + TX only | + +The extra buffer costs `MAX_MB_FRAME` bytes (128 on ATmega328P/32U4, 256 +elsewhere) and is compiled only where TCP is present, so a board without it +keeps its original footprint. The condition is `MBTCP` rather than +`MBSERIAL && MBTCP` because the always-on debugger assembles through the same +path and was losing frames the same way in a TCP-only Modbus build. diff --git a/resources/sources/Baremetal/Baremetal.ino b/resources/sources/Baremetal/Baremetal.ino index c94141608..8e83aaab2 100644 --- a/resources/sources/Baremetal/Baremetal.ino +++ b/resources/sources/Baremetal/Baremetal.ino @@ -36,6 +36,23 @@ #include "ModbusSlave.h" #endif +// Protocol servers. Included unconditionally: each facade is defined either way +// and the implementation compiles out when the target's VPP does not declare the +// capability. The call sites below are still guarded, because an unconditional +// call to an empty function keeps the call and the evaluation of its argument. +#include "opcua_server.h" +#include "opcua_log.h" +#include "s7comm_server.h" // brings in s7comm_config.h -> S7COMM_ENABLED + +// Network device-discovery responder ("Search" in the editor). Feature-gated so +// only targets declaring SUPPORTS_UDP_SCAN pull it in; unrelated to Modbus. +#if defined(SUPPORTS_UDP_SCAN) +#include "udp_scan.h" +// Weak NULL default for the discovery brand/type string. A VPP declares its +// identity with a strong OPLC_DEVICE_NAME in its HAL, which overrides this. +extern "C" { const char *OPLC_DEVICE_NAME __attribute__((weak)) = 0; } +#endif + // Include WiFi lib to turn off WiFi radio on ESP32/ESP8266 if not using WiFi #ifndef MBTCP #if defined(BOARD_ESP8266) @@ -127,6 +144,17 @@ void setup() // Discover tasks and compute scheduling runtime_discover_tasks(); + // Retained variables. init() decides what this runtime can do about them; + // load() asks the driver for what it is holding for THIS program, which is + // also where a driver discards the previous program's values. Both must + // follow runtime_bind_located_vars(), because a retained variable may also + // be located and its storage has to be bound before anything writes to it. + // + // PROGRAM_MD5 is passed from here because the sketch is on defines.h's one + // legitimate include path and the glue is not. + runtime_retain_init(PROGRAM_MD5); + runtime_retain_load(); + // Initialize hardware (HAL -- unchanged) hardwareInit(); @@ -204,12 +232,18 @@ void setup() mbconfig_serial_iface(&MBSERIAL_IFACE, MBSERIAL_BAUD, -1); #endif modbus.slaveid = MBSERIAL_SLAVE; - // NOTE (single-serial model): the debugger and Modbus RTU share one - // mb_serialport. When MBSERIAL_SHARES_DEBUG_SERIAL is defined the RTU - // port IS the debugger's default serial, so this single begin() also - // brings up the debugger. Running the debugger on the default USB - // serial while RTU uses a *different* UART simultaneously would need - // a second serial handler — a documented follow-up. + // Two models, chosen by which UART the project gave Modbus RTU: + // + // - MBSERIAL_SHARES_DEBUG_SERIAL: the RTU port IS the debugger's + // default serial, so the single begin() above brings up both and + // one mb_serialport serves them. + // - MBSERIAL_ON_SECONDARY: the RTU has its own UART and the + // debugger keeps the default one, begun further up. `handle_serial` + // polls both, each with its own RX assembly buffer. + // + // The second case was once listed here as an unimplemented + // follow-up; it landed in 4b3c1386f and is now the normal shape, + // since the editor's connection occupies the default port. #elif defined(DEBUGGER_ENABLED) // Modbus TCP-only build: no MBSERIAL, but the always-on debugger // still needs the default serial up on mb_serialport to respond. @@ -218,25 +252,6 @@ void setup() modbus.slaveid = DEBUG_SLAVE; #endif - #ifdef MBTCP - uint8_t mac[] = { MBTCP_MAC }; - uint8_t ip[] = { MBTCP_IP }; - uint8_t dns[] = { MBTCP_DNS }; - uint8_t gateway[] = { MBTCP_GATEWAY }; - uint8_t subnet[] = { MBTCP_SUBNET }; - - if (sizeof(ip)/sizeof(uint8_t) < 4) - mbconfig_ethernet_iface(mac, NULL, NULL, NULL, NULL); - else if (sizeof(dns)/sizeof(uint8_t) < 4) - mbconfig_ethernet_iface(mac, ip, NULL, NULL, NULL); - else if (sizeof(gateway)/sizeof(uint8_t) < 4) - mbconfig_ethernet_iface(mac, ip, dns, NULL, NULL); - else if (sizeof(subnet)/sizeof(uint8_t) < 4) - mbconfig_ethernet_iface(mac, ip, dns, gateway, NULL); - else - mbconfig_ethernet_iface(mac, ip, dns, gateway, subnet); - #endif - init_mbregs(MAX_ANALOG_OUTPUT + MAX_MEMORY_WORD, MAX_MEMORY_DWORD, MAX_MEMORY_LWORD, MAX_DIGITAL_OUTPUT, MAX_ANALOG_INPUT, MAX_DIGITAL_INPUT); mapEmptyBuffers(); #elif defined(DEBUGGER_ENABLED) @@ -250,6 +265,69 @@ void setup() modbus.slaveid = DEBUG_SLAVE; #endif + // ---- The network, on its own switch ---------------------------------- + // + // Everything below is gated on the NETWORK being enabled, not on Modbus + // being served. The link carries the debugger, the ethernet upload, + // discovery, OPC-UA and S7Comm; Modbus TCP is one tenant among several and + // was never the right thing to hang the interface off. A project with no + // Modbus server used to compile a firmware that never called + // mbconfig_*_iface(), which on a board reached only over Ethernet is a + // device that boots and can never be reached again. +#if defined(OPLC_NET_ENABLED) + { + uint8_t mac[] = { MBTCP_MAC }; + uint8_t ip[] = { MBTCP_IP }; + uint8_t dns[] = { MBTCP_DNS }; + uint8_t gateway[] = { MBTCP_GATEWAY }; + uint8_t subnet[] = { MBTCP_SUBNET }; + + // Five byte arrays, `sizeof(arr) < 4` as a compile-time DHCP-vs-static + // selector: an unset value is emitted as a single `0` byte. + if (sizeof(ip)/sizeof(uint8_t) < 4) + mbconfig_ethernet_iface(mac, NULL, NULL, NULL, NULL); + else if (sizeof(dns)/sizeof(uint8_t) < 4) + mbconfig_ethernet_iface(mac, ip, NULL, NULL, NULL); + else if (sizeof(gateway)/sizeof(uint8_t) < 4) + mbconfig_ethernet_iface(mac, ip, dns, NULL, NULL); + else if (sizeof(subnet)/sizeof(uint8_t) < 4) + mbconfig_ethernet_iface(mac, ip, dns, gateway, NULL); + else + mbconfig_ethernet_iface(mac, ip, dns, gateway, subnet); + } + + // The TCP listener: Modbus TCP when the project serves it, and the + // debugger's transport regardless, on a board reached only this way. + #ifdef MB_TCP_ACTIVE + mbtcp_server_begin(); + #endif + + // OPC-UA and S7Comm listen on the interface brought up above, and must not + // re-init the link themselves (see baremetal_net.h). No-ops when disabled. + #if OPCUA_ENABLED + opcua_log_begin(); + opcua_init(); + #endif + #if S7COMM_ENABLED + s7comm_init(); + #endif +#endif // OPLC_NET_ENABLED + +#if defined(SUPPORTS_UDP_SCAN) + // Network is up now; start answering editor discovery probes. + udp_scan_begin(); +#endif + +#if defined(BOARD_LOGO8) + // The LOGO! core defers its SysTick/millis() time base, because its reset + // path skips the Energia _init that would start it. Start it here and before + // setupCycleDelay(), so the scan-cycle baseline is captured from a running + // micros(); otherwise the first cycle underflows and the scan runs unthrottled. + (*(volatile uint32_t *)0xE000E014u) = (F_CPU / 1000U) - 1U; /* SYST_RVR */ + (*(volatile uint32_t *)0xE000E018u) = 0U; /* SYST_CVR */ + (*(volatile uint32_t *)0xE000E010u) = 0x00000007U; /* SYST_CSR: CLK|TICKINT|EN */ +#endif + setupCycleDelay(base_tick_ns); #ifdef USE_ARDUINO_SKETCH @@ -431,6 +509,17 @@ void modbusTask() // ============================================================================= // SCHEDULER // ============================================================================= +/** How much of the current scan cycle is still unspent. + * + * Zero once the cycle is already over budget, so a late caller is told there + * is no room rather than being handed a huge number from unsigned wraparound. + * OPC-UA uses this to decide whether it may run at all; see opcuatask(). */ +static inline uint32_t cycle_slack_us() +{ + const unsigned long used = micros() - last_run; + return (used >= scan_cycle) ? 0u : (uint32_t)(scan_cycle - used); +} + void scheduler() { runtime_plc_cycle(); @@ -447,6 +536,22 @@ void scheduler() mbtask(); #endif + // OPC-UA and S7Comm get the tail of the cycle, after the PLC logic and + // Modbus. Each is handed what remains and declines to run unless that covers + // its worst case, so neither can extend the cycle. No-ops when disabled. + // + // cycle_slack_us() is called twice deliberately: the protocols share one + // budget, so the second sees what the first actually spent. + // + // Guarded rather than relying on the no-op bodies, because the call and its + // micros() argument survive when the body compiles to `return`. + #if OPCUA_ENABLED + opcuatask(cycle_slack_us()); + #endif + #if S7COMM_ENABLED + s7commtask(cycle_slack_us()); + #endif + if (!first_cycle) { first_cycle = true; @@ -460,6 +565,12 @@ void scheduler() // ============================================================================= void loop() { +#if defined(SUPPORTS_UDP_SCAN) + // Answer editor discovery probes every iteration, independent of the scan + // cycle, so Search stays responsive even with a long task interval. + udp_scan_poll(); +#endif + if ((micros() - last_run) >= scan_cycle) { scheduler(); @@ -480,6 +591,18 @@ void loop() } #endif + // OPC-UA gets the same inter-cycle slack Modbus does. Servicing it only from + // scheduler() capped it at one message per scan while Modbus was polled + // twice per cycle. No fixed guard is needed here: opcuatask() is given the + // real remaining slack and decides for itself. Guarded for the same reason + // as in scheduler(). + #if OPCUA_ENABLED + opcuatask(cycle_slack_us()); + #endif + #if S7COMM_ENABLED + s7commtask(cycle_slack_us()); + #endif + #ifdef SIMULATOR_MODE __asm volatile("sleep"); #endif diff --git a/resources/sources/Baremetal/ModbusSlave.cpp b/resources/sources/Baremetal/ModbusSlave.cpp index 807399e50..7f4af692d 100644 --- a/resources/sources/Baremetal/ModbusSlave.cpp +++ b/resources/sources/Baremetal/ModbusSlave.cpp @@ -4,7 +4,7 @@ Copyright (C) 2022 OpenPLC - Thiago Alves */ #include "ModbusSlave.h" -// The debugger handlers (and their arduino_runtime_glue.h / ArduinoUniqueID +// The debugger handlers (and their arduino_runtime_glue.h / license_gate.h // dependencies) moved to modbus_debug.cpp. // Global Modbus vars — modbus / mb_frame / mb_frame_len moved to modbus_frame.cpp; @@ -17,7 +17,7 @@ Copyright (C) 2022 OpenPLC - Thiago Alves void mbtask() { - #ifdef MBTCP + #ifdef MB_TCP_ACTIVE handle_tcp(); #endif #ifdef MB_SERIAL_ACTIVE @@ -36,7 +36,7 @@ void mbtask() // Register store + operation FCs (readRegisters..writeMultipleCoils) moved to modbus_registers.cpp. // Debugger FCs (debugInfo/debugSetTrace/debugGetTrace/debugGetTraceList/debugGetMd5/ -// debugGetStatus/debugGetVersion/debugGetBoardId) moved to modbus_debug.cpp. +// debugGetStatus/debugGetVersion/debugGetDeviceId) moved to modbus_debug.cpp. // calcCrc() and the CRC lookup tables moved to modbus_crc.cpp. diff --git a/resources/sources/Baremetal/ModbusSlave.h b/resources/sources/Baremetal/ModbusSlave.h index d7f3b5c80..8722428c9 100644 --- a/resources/sources/Baremetal/ModbusSlave.h +++ b/resources/sources/Baremetal/ModbusSlave.h @@ -51,7 +51,7 @@ void mbtask(); // process_mbpacket() and the per-FC frame-shape helpers (mb_pdu_request_len, // mb_pdu_skips_crc) live in modbus_pdu.h; the register store and operation FCs // (init_mbregs, get/write_discrete, readRegisters..writeMultipleCoils) in -// modbus_registers.h; the debugger FCs (debugInfo..debugGetBoardId) in +// modbus_registers.h; the debugger FCs (debugInfo..debugGetDeviceId) in // modbus_debug.h; calcCrc() and the CRC tables in modbus_crc.{h,cpp} — all // included above. diff --git a/resources/sources/Baremetal/baremetal_net.cpp b/resources/sources/Baremetal/baremetal_net.cpp new file mode 100644 index 000000000..fdab7c3f6 --- /dev/null +++ b/resources/sources/Baremetal/baremetal_net.cpp @@ -0,0 +1,226 @@ +/* +baremetal_net.cpp - the concrete network adapter every protocol server shares +Copyright (C) 2026 Autonomy Logic + +The only translation unit in the runtime's protocol layers that touches a +network class. See baremetal_net.h for why the seam exists and why an +unrecognised target is a hard #error rather than a fallback. +*/ + +#include "baremetal_net.h" + +#if BM_NET_ENABLED + +#include "opcua_log.h" + +namespace bm_net { + +namespace { + +/** Client storage, shared by every listener. + * + * Concrete objects, not `Client*`, and owned here because every Arduino + * server's `accept()` returns a client by value, so a pointer handed upward has + * to point at storage that outlives the call. `in_use` rather than + * `connected()` because a slot stays ours between the peer closing and the + * server noticing. */ +struct Slot +{ + bm_client_impl_t client; + bool in_use; + uint8_t owner; // which Listener took it +}; + +Slot g_slots[BM_NET_MAX_CLIENTS]; +bool g_pool_ready = false; + +/** Listener ids are handed out in construction order. Kept here rather than on + * the Listener because the admission test has to ask about the other + * listeners. */ +#define BM_NET_MAX_LISTENERS 4 +uint8_t g_next_listener_id = 0; +uint8_t g_reserves[BM_NET_MAX_LISTENERS] = { 0, 0, 0, 0 }; + +/** How many slots one listener currently holds. */ +uint8_t held_by(uint8_t owner) +{ + uint8_t n = 0; + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + if (g_slots[i].in_use && g_slots[i].owner == owner) + n++; + return n; +} + +/** How many slots are free. */ +uint8_t free_slots() +{ + uint8_t n = 0; + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + if (!g_slots[i].in_use) + n++; + return n; +} + +/** Slots that must stay available so every other listener can still reach its + * floor. */ +uint8_t owed_to_others(uint8_t me) +{ + uint8_t owed = 0; + for (uint8_t l = 0; l < g_next_listener_id && l < BM_NET_MAX_LISTENERS; l++) + { + if (l == me) + continue; + const uint8_t held = held_by(l); + if (held < g_reserves[l]) + owed = (uint8_t)(owed + (g_reserves[l] - held)); + } + return owed; +} + +void ensure_pool() +{ + if (g_pool_ready) + return; + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + g_slots[i].in_use = false; + g_pool_ready = true; +} + +} // namespace + +Listener::Listener(uint16_t port, uint8_t reserve) + : impl_(port), started_(false), reserve_(reserve), id_(g_next_listener_id) +{ + if (g_next_listener_id < BM_NET_MAX_LISTENERS) + g_reserves[g_next_listener_id] = reserve; + g_next_listener_id++; +} + +bool Listener::begin() +{ + if (started_) + return true; + + ensure_pool(); + + // No Ethernet.begin() / WiFi.begin() here: the interface is already up, + // configured by Modbus TCP from the project's network screen before the PLC + // started scanning. Re-initialising it would reset the link out from under a + // live Modbus session and, on a static-IP build, put two claims on one address. + impl_.begin(); + started_ = true; + return true; +} + +Client* Listener::accept() +{ + if (!started_) + return nullptr; + + // accept(), not available(). available() hands back any established + // connection, round-robin, whether or not it is new, so a server keeping + // per-connection state cannot tell an arrival from a peer it already holds. + // accept() hands each connection over exactly once, which is what Arduino + // Ethernet >= 2.0 and the ESP32 core both settled on. + bm_client_impl_t incoming = impl_.accept(); + if (!incoming) + return nullptr; + + // Below our own floor we are always served. Above it we may take a slot only + // if that still leaves every other listener able to reach its floor; + // otherwise a protocol in a reconnect burst empties the pool under a quieter one. + const uint8_t mine = held_by(id_); + if (mine >= reserve_ && free_slots() <= owed_to_others(id_)) + { + // Nothing left. Drop it now rather than leaving it half-accepted: a + // client refused at the TCP layer retries immediately, and a connection + // we neither serve nor close sits in the backlog. + OPCUA_LOG("[net] accept REFUSED (listener %u holds %u/%u, %u free, %u owed)", + (unsigned)id_, (unsigned)mine, (unsigned)reserve_, + (unsigned)free_slots(), (unsigned)owed_to_others(id_)); + incoming.stop(); + return nullptr; + } + + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + { + if (!g_slots[i].in_use) + { + g_slots[i].client = incoming; + g_slots[i].in_use = true; + g_slots[i].owner = id_; + OPCUA_LOG("[net] accepted port=%d -> slot %u (listener %u)", + incoming.port(), (unsigned)i, (unsigned)id_); + return &g_slots[i].client; + } + } + + OPCUA_LOG("[net] accept REFUSED (no free slot)"); + incoming.stop(); + return nullptr; +} + +void Listener::end() +{ + started_ = false; +} + +bool can_send(const Client* client, size_t need) +{ + if (client == nullptr) + return false; + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + { + if (g_slots[i].in_use && + static_cast(&g_slots[i].client) == client) + { + // The concrete type is the whole reason this lives here. + const int room = g_slots[i].client.availableForWrite(); + return room > 0 && (size_t)room >= need; + } + } + return false; +} + +void release(Client* client) +{ + if (client == nullptr) + return; + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + { + if (g_slots[i].in_use && static_cast(&g_slots[i].client) == client) + { + // Unconditional. A handle whose slot was recycled under us is + // detected inside EthernetClient, where stop() is a no-op rather + // than a teardown of whoever owns the slot now. + g_slots[i].client.stop(); + g_slots[i].in_use = false; + return; + } + } +} + +void poll() +{ + // Every adapter selected in baremetal_net.h drives its stack from an + // interrupt, so there is nothing cooperative to service here today. The hook + // is kept so callers never have to learn which stack they are on. +} + +void close_all() +{ + if (!g_pool_ready) + return; + for (uint8_t i = 0; i < BM_NET_MAX_CLIENTS; i++) + { + if (g_slots[i].in_use) + { + g_slots[i].client.stop(); + g_slots[i].in_use = false; + } + } +} + +} // namespace bm_net + +#endif // BM_NET_ENABLED diff --git a/resources/sources/Baremetal/baremetal_net.h b/resources/sources/Baremetal/baremetal_net.h new file mode 100644 index 000000000..fc453e3a4 --- /dev/null +++ b/resources/sources/Baremetal/baremetal_net.h @@ -0,0 +1,190 @@ +/* +baremetal_net.h - the one place the runtime names a concrete network class +Copyright (C) 2026 Autonomy Logic + +Everything above this header is typed on Arduino's abstract `Client`, so the +protocol servers contain no board macros. An unrecognised target is a hard +#error rather than a fallback, because a generic fall-through has produced both +compile failures and silent runtime faults. + +Each protocol declares its own `Listener` with its own port but they share one +slot pool. This seam does not bring the interface up: setup() does that from the +project's network screen, gated on OPLC_NET_ENABLED, before any protocol here +starts listening. It used to be the Modbus TCP layer's job, which made a network +without a Modbus server impossible. +*/ + +#ifndef BAREMETAL_NET_H +#define BAREMETAL_NET_H + +#include "opcua_config.h" +#include "s7comm_config.h" + +/** True when at least one protocol server needs a listening socket; with both + * disabled this entire file is empty. */ +#define BM_NET_ENABLED (OPCUA_ENABLED || S7COMM_ENABLED) + +#if BM_NET_ENABLED + +#include +#include +#include + +// The generated `defines.h` carries the board identity (BOARD_LOGO8, ...) and +// the interface kind (MBTCP_ETHERNET / MBTCP_WIFI) the adapter selection keys +// on. It has no include guard, so the project routes it through exactly one +// path -- `modbus_config.h` -- and every gated TU picks it up from there. This +// is a dependency on the build configuration, not on Modbus. +#include "modbus_config.h" + +// --------------------------------------------------------------------------- +// Adapter selection: the only board-conditional block in the network layer. +// Most specific target first, interface-kind defines last, hard stop when +// nothing matches. +// --------------------------------------------------------------------------- +#if defined(BOARD_LOGO8) + // Energia lwIP , deliberately without : there is no SPI + // Ethernet shield on this variant and the core's hard-errors. + #include + typedef EthernetServer bm_server_impl_t; + typedef EthernetClient bm_client_impl_t; + +#elif defined(BOARD_ESP32) + // Covers both interfaces on purpose: on the ESP32 the RMII Ethernet MAC and + // the Wi-Fi station share one lwIP netif, so `WiFiServer` is the listening + // socket for either. There is no `EthernetServer` in this core. + #include + typedef WiFiServer bm_server_impl_t; + typedef WiFiClient bm_client_impl_t; + +#elif defined(BOARD_ESP8266) + #include + typedef WiFiServer bm_server_impl_t; + typedef WiFiClient bm_client_impl_t; + +#elif defined(BOARD_PICOW) && defined(MBTCP_WIFI) + // Route-qualified: BOARD_PICOW names the CYW43 WiFi, and a Pico W with an + // SPI Ethernet module must fall through to the MBETH_SPI branch below + // rather than be handed a WiFiServer for a chip it is not talking to. + #include + typedef WiFiServer bm_server_impl_t; + typedef WiFiClient bm_client_impl_t; + +#elif defined(BOARD_PORTENTA) && defined(MBTCP_WIFI) + // Same rule for the WiFi-shape boards. On mbed, WiFiS3 and the esp32 core + // alike this name resolves to that core's own WiFiServer. + #include + typedef WiFiServer bm_server_impl_t; + typedef WiFiClient bm_client_impl_t; + +#elif defined(MBETH_MBED_LWIP) + // mbed lwIP MAC (Portenta, Giga, Portenta Machine Control). No : + // there is no module on the bus. + #include + typedef EthernetServer bm_server_impl_t; + typedef EthernetClient bm_client_impl_t; + +#elif defined(MBETH_SPI) + // Generic SPI Ethernet module. Reached only by targets that genuinely use + // one, because every chip with its own MAC is named above. Which driver + // comes from the project's Network screen via MBTCP_ETH_ENC28J60; the class + // names are identical either way, so only the include differs. + #include + #if defined(MBTCP_ETH_ENC28J60) + #include + #else + #include + #endif + typedef EthernetServer bm_server_impl_t; + typedef EthernetClient bm_client_impl_t; + +#elif defined(MBTCP_WIFI) + #include + #include + typedef WiFiServer bm_server_impl_t; + typedef WiFiClient bm_client_impl_t; + +#else + #error "baremetal_net: no network adapter for this target. Add a branch keyed on the target's capability define -- do not add a fallback." +#endif + +// Slot budget. A slot is an Arduino `Client` handle, not a protocol buffer, so +// this is sized for TCP churn rather than sessions. OPC-UA asks for +// maxSessions + 5 so a live connection overlapping a not-yet-reaped one cannot +// fill the table; S7 asks for maxClients + 1 so a connection arriving at the +// ceiling can be refused politely rather than dropped at the TCP layer. +#if OPCUA_ENABLED +# define BM_NET_OPCUA_SLOTS (OPCUA_MAX_SESSIONS + 5) +#else +# define BM_NET_OPCUA_SLOTS 0 +#endif + +#if S7COMM_ENABLED +# define BM_NET_S7_SLOTS (S7COMM_MAX_CLIENTS + 1) +#else +# define BM_NET_S7_SLOTS 0 +#endif + +#define BM_NET_MAX_CLIENTS (BM_NET_OPCUA_SLOTS + BM_NET_S7_SLOTS) + +namespace bm_net { + +/** One listening socket. + * + * A class rather than a `listen(port)` free function because every Arduino + * server object is constructed with its port and is not reliably copyable or + * assignable across cores. Accepted clients go into the shared pool, so + * `release()` and `can_send()` are free functions. */ +class Listener +{ +public: + /** `reserve` is how many slots this listener may always have, even when + * another protocol is churning through connections. Below its reserve a + * listener is always served; above it, it takes from what is free. Set it + * to the protocol's own client ceiling. */ + Listener(uint16_t port, uint8_t reserve); + + /** Open the socket. Does not configure the interface -- see the header + * comment. Idempotent; returns false only if the port could not be opened. */ + bool begin(); + + /** Next newly-connected client on this listener, or nullptr. + * + * The returned pointer is to shared-pool storage, so it stays valid until + * `release()`. Deliberately not a `Client` by value: the concrete + * `accept()` on every Arduino server returns a temporary. */ + Client* accept(); + + /** Close this listener. Does not touch clients -- they are the pool's. */ + void end(); + +private: + bm_server_impl_t impl_; + bool started_; + uint8_t reserve_; + uint8_t id_; // which slots in the shared pool are ours +}; + +/** Hand a client slot back. Closes the connection if still open. */ +void release(Client* client); + +/** Can `need` bytes be queued on `client` right now without blocking? + * + * Arduino's abstract `Client` has no such query -- `availableForWrite()` is + * declared on the concrete classes, not the base -- so the seam asks on the + * caller's behalf. It matters because `write()` blocks: Energia's spins on + * `delay(1)` until lwIP's send buffer drains, which inside a scan cycle is + * unbounded. */ +bool can_send(const Client* client, size_t need); + +/** Service the stack. A no-op on cores whose driver is interrupt-driven; the + * hook exists for stacks that need cooperative polling. */ +void poll(); + +/** Close every client in the pool. Listeners close themselves. */ +void close_all(); + +} // namespace bm_net + +#endif // BM_NET_ENABLED +#endif // BAREMETAL_NET_H diff --git a/resources/sources/Baremetal/license_blob.h b/resources/sources/Baremetal/license_blob.h index 7c7c1694c..029f1e71d 100644 --- a/resources/sources/Baremetal/license_blob.h +++ b/resources/sources/Baremetal/license_blob.h @@ -1,17 +1,14 @@ /* -license_blob.h - On-device license blob binary layout + storage CRC +license_blob.h - On-device license blob binary layout + storage CRC (OLS-01, OLS-03) Copyright (C) 2022 OpenPLC - Thiago Alves -The C side of the license blob contract. Cross-pinned to the TypeScript -serializer (src/backend/shared/debug/license-blob.ts) by the golden vector in -its __tests__/fixtures/license-golden.json -- a layout change on either side -must fail a test rather than produce a blob the other end silently rejects. +Materialization of lic_payload_t / lic_blob_t (see hardware-licensing design). Shared by every storage backend (AVR EEPROM, ESP32 NVS) and by the Modbus license handlers. Layout is PACKED and LITTLE-ENDIAN for every multi-byte field of the struct (magic, crc32). This is INDEPENDENT of the Modbus wire, which carries the transfer `len` in BIG-ENDIAN (see modbus_pdu.cpp / modbus_debug.cpp). - ENDIANNESS DUALITY: blob CONTENT is LITTLE-ENDIAN; the Modbus wire + ENDIANNESS DUALITY (risk #1): blob CONTENT is LITTLE-ENDIAN; the Modbus wire `len` field is BIG-ENDIAN. Do not confuse the two. */ @@ -55,6 +52,12 @@ typedef struct __attribute__((packed)) { #define LIC_MAGIC_LE 0x434C504Fu /* bytes 4F 50 4C 43 */ #define LIC_BLOB_SIZE 98u #define LIC_PAYLOAD_SIZE 30u +/* Width of the `device_id` field, and therefore of the identity anything + * reports for this board (`license_gate_device_id`). It lives here, with the + * layout, because it is a property of the BLOB: the verifier memcmp's exactly + * this many bytes at LIC_OFF_DEVICE_ID. The static assert at the bottom binds + * the two so they cannot drift. */ +#define LIC_DEVICE_ID_SIZE 16u // Portable compile-time assert. Every Baremetal .cpp includes this header, so it // is compiled as C++, where static_assert is a keyword. _Static_assert is C-only @@ -68,6 +71,8 @@ typedef struct __attribute__((packed)) { LIC_STATIC_ASSERT(sizeof(lic_payload_t) == 30, "lic_payload_t must be 30 bytes"); LIC_STATIC_ASSERT(sizeof(lic_blob_t) == 98, "lic_blob_t must be 98 bytes"); +LIC_STATIC_ASSERT(sizeof(((lic_payload_t *)0)->device_id) == LIC_DEVICE_ID_SIZE, + "device_id width must match the blob layout"); // CRC-32/ISO-HDLC (a.k.a. CRC-32, zlib/PKZIP). // poly 0xEDB88320 (reflected) · init 0xFFFFFFFF · refin/refout true · xorout 0xFFFFFFFF diff --git a/resources/sources/Baremetal/license_gate.h b/resources/sources/Baremetal/license_gate.h index e89846b5d..313a38ff4 100644 --- a/resources/sources/Baremetal/license_gate.h +++ b/resources/sources/Baremetal/license_gate.h @@ -1,7 +1,7 @@ /* license_gate.h - License enforcement gate (verify + demo window). The closed license-core (prebuilt) provides the STRONG implementation (verify + -15-minute demo timer). The open firmware ships a weak default that reports +2-hour demo timer). The open firmware ships a weak default that reports UNSUPPORTED and allows actuation, so boards without a license-core behave as before. The clock is injected (now_ms) so the core stays host-testable. */ @@ -22,10 +22,11 @@ typedef enum { LIC_GATE_UNSUPPORTED = 3, /* no license-core linked (weak default) -> unenforced */ } lic_gate_state_t; -/* 15 minutes. Overridable at build (-DLIC_GATE_DEMO_MS=...) for bench tests - * that must watch the demo expire in seconds; production keeps the default. */ +/* 2 hours (product decision 2026-08-18; was 15 minutes). Overridable at build + * (-DLIC_GATE_DEMO_MS=...) for bench tests that must watch the demo expire in + * seconds; production keeps the default. */ #ifndef LIC_GATE_DEMO_MS -#define LIC_GATE_DEMO_MS 900000u +#define LIC_GATE_DEMO_MS 7200000u #endif /* @@ -34,11 +35,39 @@ typedef enum { * now_ms - injected clock, so the core stays host-testable. * * The device anchor is NOT a parameter: license_core reads it from the silicon - * inside the closed artifact. It used to be passed in from the sketch, + * inside the closed artifact (ADR-0003). It used to be passed in from the sketch, * which made the identity a claim the open firmware could rewrite. */ void license_gate_init(const uint8_t *blob, size_t blob_len, uint32_t now_ms); + +/* + * Status QUERY — reporting, never enforcement. It writes no state at all: it + * cannot arm the demo window (EDGE-595) and it cannot latch its expiry + * (review 2026-08-19) — it only reflects what init or enforcement decided. + * So a diagnostic caller handing in a garbage timestamp can misread the + * state, but cannot end (or extend) the demo window for the rest of the boot. + */ lic_gate_state_t license_gate_state(uint32_t now_ms); + +/* + * Enforcement before init is NOT a free pass (EDGE-595): the first enforcement + * call (this or license_gate_outputs_permitted) arms the same demo window an + * unlicensed init would, counting LIC_GATE_DEMO_MS from that call. A firmware + * that never calls license_gate_init() therefore degrades to demo instead of + * actuating forever. A later init with a VALID blob still reaches FULL; an + * invalid one keeps the already-running window (no restart). + * + * ENFORCEMENT LATCHES EXPIRY (E2E review 2026-08-18, scoped to enforcement + * 2026-08-19): the first enforcement verdict of DEMO_EXPIRED is permanent for + * the rest of the boot, so the 32-bit millis() wraparound (~49.7 days) cannot + * reopen a closed window, and neither can feeding enforcement an older + * timestamp afterwards. Consequence, and it fails CLOSED: one absurd + * timestamp fed to THIS entry point past the window ends the demo for the + * boot. The last-mile check (license_gate_outputs_permitted) takes no caller + * clock at all. A VALID licence is never latched out: FULL wins before the + * latch is consulted, and an activation done while expired recovers at the + * next boot's init. + */ int license_gate_actuation_allowed(uint32_t now_ms); /* @@ -54,18 +83,59 @@ int license_gate_actuation_allowed(uint32_t now_ms); * monotonic clock inside the closed artifact instead. * * Returns 1 when actuation is allowed (FULL, or a demo window still running) and - * 0 once the demo has expired. Fail-open before init, like - * license_gate_actuation_allowed: the firmware always inits in setup. + * 0 once the demo has expired. Before init it arms the lazy demo window on the + * platform clock, like license_gate_actuation_allowed (EDGE-595): a missing + * init is a missing licence, not a licence. */ int license_gate_outputs_permitted(void); -#ifndef ARDUINO /* - * HOST-TEST SEAM, absent from every device build by construction -- `ARDUINO` is - * defined for the prebuilt `.a`, so this symbol is not in the artifact a VPP - * ships. It has to be absent: `license_gate_init` refuses a second call - * specifically so open code cannot re-arm the demo window, and an exported - * "forget you were initialised" would hand that back with a nicer name. + * Report THIS board's licensing identity: `device_id`, not the anchor. + * + * Writes LIC_DEVICE_ID_SIZE bytes into `out` and returns that count, or returns + * 0 when this board has no identity a licence can be bound to. The constant is + * declared in license_blob.h, next to the field it has to match. + * + * REPORTING, NEVER ENFORCEMENT. Nothing about actuation consults this, and the + * verifier does not either: `license_core_verify` re-reads the silicon through + * `license_platform_anchor()` and derives the id again internally, so what this + * function hands the open firmware is a value to PUBLISH (FC 0x48 -> the editor + * -> the purchase), never a claim the gate believes. Reporting an identity and + * asserting one stay different things (Baremetal.ino). + * + * IT RETURNS THE DIGEST AND NEVER THE ANCHOR, and that is the security + * property, not an implementation detail. The raw anchor is a permanent, + * non-rotatable factory serial (an ESP32 eFuse MAC, an AVR signature row); + * the digest is domain-separated and licensing-specific. Before DOPE-589 FC + * 0x48 published the anchor itself on an unauthenticated channel. Handing the + * anchor back from here would restore that disclosure behind a new name. + * + * ZERO IS A REFUSAL, never a zero-length identity -- the same contract + * `license_platform_anchor` and `arduino_unique_id_read` state, for the same + * reason: sha256(domain || ) is a CONSTANT, so a zero-length anchor + * would give every such board one shared device_id and a single signed blob + * would licence the whole population. Callers propagate the refusal; the + * editor's licensing flow already treats a zero-length reply as "no licence + * can be bound to this board" (license-flow.ts, deriveIdentity). + * + * The weak default in the open firmware returns 0, so a board with no + * license-core reports no identity, which is what it is. A LICENSABLE board + * cannot reach that default: the packaging rules refuse to publish a licensable + * VPP whose closed archive is not wired in (licensable-wiring.ts), and rule #48 + * refuses a stale archive -- which is what keeps an archive built before this + * function existed from silently answering 0 on a paid board. + */ +size_t license_gate_device_id(uint8_t *out, size_t cap); + +#ifdef LIC_HOST_TEST +/* + * HOST-TEST SEAM, absent from every device build by construction -- only a build + * that defines `LIC_HOST_TEST` (the license-core/test Makefile, nothing else) + * gets this symbol, so it is not in any artifact a VPP ships: neither the + * Arduino `.a` nor the runtime-v4 Linux objects. It has to be absent: + * `license_gate_init` refuses a second call specifically so open code cannot + * re-arm the demo window, and an exported "forget you were initialised" would + * hand that back with a nicer name. * * The host tests need it because they exercise FULL, expiry and millis-wrap as * separate scenarios against one set of file-scope statics. diff --git a/resources/sources/Baremetal/license_gate_weak.cpp b/resources/sources/Baremetal/license_gate_weak.cpp index d91edc938..307d7afaf 100644 --- a/resources/sources/Baremetal/license_gate_weak.cpp +++ b/resources/sources/Baremetal/license_gate_weak.cpp @@ -4,7 +4,7 @@ Copyright (C) 2022 OpenPLC - Thiago Alves Guarantees the firmware always links even when no platform VPP provides a real license-core. The VPP's prebuilt license-core (.a) defines the STRONG symbols -(ECDSA verify + 15-minute demo timer), which override these weak defaults at +(ECDSA verify + 2-hour demo timer), which override these weak defaults at link time. When absent, these run: the gate reports LIC_GATE_UNSUPPORTED and actuation stays unconditionally allowed, so a board without a license-core behaves exactly as it did before licensing existed (no enforcement). @@ -31,6 +31,25 @@ __attribute__((weak)) int license_gate_actuation_allowed(uint32_t now_ms) return 1; } +// A board with no license-core has no identity a licence could be bound to, so +// it reports none. Zero is a REFUSAL, not an empty identity: sha256(domain || +// ) is a constant, so an "empty" id would be the SAME on every such +// board and one purchase would appear to cover them all. FC 0x48 answers a +// well-formed SUCCESS with id_len = 0, which is what device-probe and the +// licensing flow already expect (see license_gate.h). +// +// A LICENSABLE board never reaches this default: openplc-packages refuses to +// publish a licensable VPP whose closed archive is not wired into the build +// (licensable-wiring.ts), and refuses a stale archive that predates this +// function (the .built-from.json rule), so it cannot silently answer 0 on a +// board someone paid for. +__attribute__((weak)) size_t license_gate_device_id(uint8_t *out, size_t cap) +{ + (void)out; + (void)cap; + return 0u; +} + // Same unenforced answer, for the same reason: a board with no license-core is // not a board running an expired demo. A licensable VPP overrides this with the // strong version from its closed .a, and its HAL asks THAT one before driving a diff --git a/resources/sources/Baremetal/license_store.h b/resources/sources/Baremetal/license_store.h index 72e716129..82ee32ed5 100644 --- a/resources/sources/Baremetal/license_store.h +++ b/resources/sources/Baremetal/license_store.h @@ -1,5 +1,5 @@ /* -license_store.h - Single storage interface for the on-device license blob +license_store.h - Single storage interface for the on-device license blob (OLS-04) Copyright (C) 2022 OpenPLC - Thiago Alves The one point of contact for persisting the license blob. The closed license-core diff --git a/resources/sources/Baremetal/modbus_config.h b/resources/sources/Baremetal/modbus_config.h index 642bd5b9f..e388d57ac 100644 --- a/resources/sources/Baremetal/modbus_config.h +++ b/resources/sources/Baremetal/modbus_config.h @@ -26,6 +26,19 @@ it must reach a TU through exactly one path: this header. #define MB_SERIAL_ACTIVE #endif +// The same rule for the network. TCP transport is active when Modbus TCP is +// served (MBTCP) OR the always-on debugger needs the link because that is the +// only way in (OPLC_NET_ENABLED + DEBUGGER_ENABLED). +// +// Without this the debugger's reachability was a side effect of someone having +// added a Modbus server: on a board with no accessible UART -- the LOGO! -- a +// project that served no Modbus produced firmware with nothing listening, so +// the editor could neither debug it nor upload to it again. The debugger is not +// Modbus, and it should not need Modbus's permission to answer. +#if defined(MBTCP) || (defined(OPLC_NET_ENABLED) && defined(DEBUGGER_ENABLED)) + #define MB_TCP_ACTIVE +#endif + // Default serial config for the always-on debugger. `defines.h` normally emits // DEBUG_IFACE / DEBUG_BAUD / DEBUG_SLAVE explicitly (from the Serial and Modbus // RTU screens); these `#ifndef` defaults cover anything it left unset — they are @@ -45,6 +58,43 @@ it must reach a TU through exactly one path: this header. #ifndef DEBUG_SLAVE #define DEBUG_SLAVE 1 #endif + // The editor's link answers on its own id IN ADDITION to whatever the Modbus + // server is set to, routed by function code, so the user's slave id is free + // on every port. Undefined without the debugger: there is no editor link to + // keep reachable and the server owns the port alone. + #define MB_EDITOR_SLAVE DEBUG_SLAVE +#endif + +// --------------------------------------------------------------------------- +// Ethernet route: which stack carries it. +// +// `BOARD_*` names the board's WIFI API -- that is the axis it was introduced +// for, and it is why the Arduino Uno R4 WiFi and the Nano ESP32 both declare +// BOARD_PORTENTA: neither is a Portenta, but both reach WiFi through the same +// call shape. The Ethernet route is a SEPARATE axis and was being read off the +// same define, so a board whose WiFi happens to look like a Portenta's was also +// told its Ethernet is a Portenta's -- an mbed lwIP MAC rather than the SPI +// module it actually takes. +// +// So the two are split. MBETH_* says what carries Ethernet and nothing about +// WiFi; a VPP states it with `-DMBETH_SPI` in its HAL flags when the default +// below would guess wrong for that board. +// +// This is the CHEAP half of the fix: the WiFi axis keeps using BOARD_*, and +// `WiFi.config()`'s argument order is still chosen by it -- which is still +// wrong for WiFiS3 and the esp32 core (both differ from mbed's). That needs a +// board on the bench to verify against and is deliberately not attempted here. +// --------------------------------------------------------------------------- +#if defined(MBTCP_ETHERNET) && !defined(MBETH_SPI) && !defined(MBETH_MBED_LWIP) +# if defined(BOARD_LOGO8) || defined(BOARD_ESP32) + // On-chip MAC. Named branches own these; neither MBETH_* applies. +# elif defined(BOARD_PORTENTA) + // Default preserved: a real Portenta / Giga / Portenta Machine Control has + // an mbed lwIP MAC. A board that only borrows the WiFi shape overrides it. +# define MBETH_MBED_LWIP +# else +# define MBETH_SPI +# endif #endif #endif diff --git a/resources/sources/Baremetal/modbus_debug.cpp b/resources/sources/Baremetal/modbus_debug.cpp index 4c8bd8ee3..c30047016 100644 --- a/resources/sources/Baremetal/modbus_debug.cpp +++ b/resources/sources/Baremetal/modbus_debug.cpp @@ -16,14 +16,22 @@ Copyright (C) 2022 OpenPLC - Thiago Alves #include "openplc.h" #include "openplc_version.h" -// ArduinoUniqueID (ricaun) backs the DEBUG_GET_BOARD_ID (0x48) function code. -// It supports AVR/megaAVR/SAM/SAMD/STM32/ESP/RP2040/Teensy. On a core without -// support (or when a board intentionally opts out via OPENPLC_NO_UNIQUE_ID), -// the board-id handler returns id_len = 0 instead of failing to compile. -#ifndef OPENPLC_NO_UNIQUE_ID - #include - #define OPENPLC_HAS_UNIQUE_ID -#endif +// The identity behind DEBUG_GET_DEVICE_ID (0x48) comes from the closed +// license-core, not from a library compiled into this open firmware. +// +// It used to come from ArduinoUniqueID (ricaun), included right here, and that +// had two problems. The library `#error`s out on any core it does not cover +// (mbed is one, so every Arduino Opta, Portenta Machine Control and Edge +// Control build failed, DOPE-587), and it made this file read the raw factory +// serial in order to publish it on a channel with no authentication. +// +// Now the firmware ASKS: `license_gate_device_id()` reads the silicon inside +// the closed artifact and hands back the derived device_id, so the anchor never +// leaves it. On a board with no license-core the weak default answers 0, which +// is the truthful answer for a board no licence can be bound to. Nothing here +// derives, normalizes or reformats what it gets: the bytes go on the wire as +// they arrive, because the editor compares them against what it purchased. +#include "license_gate.h" /** * @brief Sends a Modbus response frame for the DEBUG_INFO function code. @@ -158,10 +166,24 @@ void debugGetTrace(uint8_t arr, uint16_t startidx, uint16_t endidx) { uint16_t varSize = openplc_debug_size(arr, elem); // Bounds check — stop packing if this one won't fit. + // + // NOTE: two cases are conflated here, and they cannot be separated + // without a wire change. A leaf that cannot fit an EMPTY frame can + // never be sent (a WSTRING needs 11+253 against a 256-byte ceiling, + // because the READ path pads strings to their full width), so breaking + // starves every later variable in the range as well. + // + // Skipping it instead was tried and is WORSE: the response is + // positional, so omitting one leaf shifts every following value into + // the wrong slot. The decoder's bounds check turns most of those into a + // dropped batch, but a large enough payload would let it decode one + // variable's bytes AS another and display a confidently wrong value. + // Absent beats wrong, so this stays until the framing itself can say + // "skipped" -- see the compact-string work (DOPE-645). if ((11 + responseSize + varSize) > MAX_MB_FRAME) break; if (varSize == 0) { - // Entry has no readable bytes (string stub / out-of-bounds) - // — skip gracefully to keep the scan progressing. + // No readable bytes for this entry (out of bounds). Skip gracefully + // to keep the scan progressing. lastElemIdx = elem; continue; } @@ -390,6 +412,53 @@ void plcSetState(uint8_t desired) mb_frame_len = 5; } +// Magic that must accompany a reboot-to-bootloader request, so a stray or +// probing 0x4C frame cannot reset a running PLC. The editor sends these bytes. +static const uint8_t REBOOT_BOOTLOADER_MAGIC[4] = { 0xB0, 0x07, 0x10, 0xAD }; + +// PDU request: [FC][magic:4] +// PDU response: [FC][status] (0x7E = accepted and rebooting) +// +// Asks the HAL to reboot into its firmware bootloader. The response is built here +// but sent after process_mbpacket() returns, so a HAL must arm the reset rather +// than perform it. The weak default is a no-op. +void rebootToBootloader(const uint8_t *magic) +{ + uint8_t status = MB_DEBUG_SUCCESS; + for (int i = 0; i < 4; i++) + if (magic[i] != REBOOT_BOOTLOADER_MAGIC[i]) { status = MB_DEBUG_ERROR_OUT_OF_BOUNDS; break; } + + // Programming lock. A locked device must still answer, or the editor could + // only report a timeout, so reply MB_REFUSED_LOCKED and raise the unlock + // prompt on the device's own display for the person standing at it. + if (status == MB_DEBUG_SUCCESS && hardwareProgrammingLocked()) + { + status = MB_REFUSED_LOCKED; + hardwarePromptUnlock(); // returns immediately; never blocks the scan + } + + mb_frame[1] = MB_FC_REBOOT_BOOTLOADER; + mb_frame[2] = status; + mb_frame_len = 3; + + if (status == MB_DEBUG_SUCCESS) + hardwareRebootToBootloader(); // arms; the actual reset happens post-reply +} + +// PDU request: [FC] +// PDU response: [FC][STATUS][locked:u8] (locked: 0 = unlocked, 1 = locked) +// +// Read-only companion to 0x4C, polled by the editor while it waits out a refused +// reboot so it can tell "still locked" from "device went away". Free of side +// effects, so polling cannot spam the display. A board with no lock reports 0. +void getLockState(void) +{ + mb_frame[1] = MB_FC_GET_LOCK_STATE; + mb_frame[2] = MB_DEBUG_SUCCESS; + mb_frame[3] = hardwareProgrammingLocked() ? 1 : 0; + mb_frame_len = 4; +} + // PDU request: [FC] // PDU response: [FC, STATUS, version_ascii...] (no NUL terminator) // @@ -413,26 +482,28 @@ void debugGetVersion() // PDU request: [FC] // PDU response: [FC, STATUS, id_len:u8, id_bytes...] // -// Returns the unique hardware ID via ArduinoUniqueID. id_len is UniqueIDsize -// (architecture-dependent: AVR 9-10, ESP8266 4, ESP32 6, SAM/SAMD 16, STM32 -// 12, Teensy 8). On a core without support, id_len = 0 and no bytes follow. -void debugGetBoardId() +// Reports this board's device_id: LIC_DEVICE_ID_SIZE bytes on a board that can +// hold a licence, and id_len = 0 on one that cannot. Both are SUCCESS replies. +// The empty answer is not an error and must not look like one: `device-probe` +// reads a successful reply, not the id bytes, as proof that firmware is running +// (requiring bytes once reported mbed boards as having no firmware at all), and +// the editor's licensing flow reads a zero-length id as "no licence can be +// bound to this board" (license-flow.ts, deriveIdentity). +// +// The frame is the capacity limit, so it is passed as one: if the id could not +// fit after [FC][STATUS][id_len], `license_gate_device_id` refuses and reports +// nothing rather than a truncated identity, which would be a DIFFERENT id and +// would match no licence ever issued. +void debugGetDeviceId() { - mb_frame[1] = MB_FC_DEBUG_GET_BOARD_ID; + size_t idLen; + + mb_frame[1] = MB_FC_DEBUG_GET_DEVICE_ID; mb_frame[2] = MB_DEBUG_SUCCESS; -#ifdef OPENPLC_HAS_UNIQUE_ID - uint8_t idLen = (uint8_t)UniqueIDsize; - // Clamp so [FC][STATUS][id_len][id_bytes...] always fits the frame. - if ((uint16_t)(4 + idLen) > MAX_MB_FRAME) idLen = (uint8_t)(MAX_MB_FRAME - 4); - mb_frame[3] = idLen; - for (uint8_t i = 0; i < idLen; i++) - mb_frame[4 + i] = UniqueID[i]; - mb_frame_len = 4 + idLen; -#else - mb_frame[3] = 0; // no unique-id support on this core - mb_frame_len = 4; -#endif + idLen = license_gate_device_id(&mb_frame[4], (size_t)(MAX_MB_FRAME - 4)); + mb_frame[3] = (uint8_t)idLen; + mb_frame_len = 4 + (int)idLen; } // --------------------------------------------------------------------------- @@ -490,7 +561,7 @@ void debugWriteLicense(uint16_t len, const uint8_t *blob) // PDU response (EMPTY/CORRUPT/error): [FC][STATUS] (no len, no blob) // // Absolute mb_frame indices (index 0 is the slave id, the PDU starts at 1, -// exactly like debugGetBoardId): FC@1, STATUS@2, len@3..4 (BIG-ENDIAN), blob@5. +// exactly like debugGetDeviceId): FC@1, STATUS@2, len@3..4 (BIG-ENDIAN), blob@5. // // The store reads straight into &mb_frame[5]: the frame IS the static buffer, so // there is no malloc on AVR. READ carries no request payload, so writing at [5] diff --git a/resources/sources/Baremetal/modbus_debug.h b/resources/sources/Baremetal/modbus_debug.h index 347ce9904..83fd82725 100644 --- a/resources/sources/Baremetal/modbus_debug.h +++ b/resources/sources/Baremetal/modbus_debug.h @@ -23,7 +23,7 @@ void debugGetMd5(void *endianness); // Always-on debugger extras — served even without full Modbus (DEBUGGER_ENABLED). void debugGetStatus(void); void debugGetVersion(void); -void debugGetBoardId(void); +void debugGetDeviceId(void); // On-device license storage (0x49/0x4A). `len` is the BIG-ENDIAN wire length // (already unpacked by the dispatcher); the blob CONTENT is little-endian. void debugWriteLicense(uint16_t len, const uint8_t *blob); // 0x49 @@ -31,5 +31,12 @@ void debugReadLicense(void); // 0x4A // FC 0x4B -- set the runtime run/stop state. Command only; the state is read // back through debugGetStatus (FC 0x46), which reports it. void plcSetState(uint8_t desired); +// FC 0x4C -- reboot into the device's firmware bootloader (magic-guarded, so a +// stray frame can't reset a running PLC). `magic` points at the 4 payload bytes. +void rebootToBootloader(const uint8_t *magic); +// FC 0x4D -- report the device's programming-lock state. Read-only and +// side-effect free (unlike 0x4C, which raises the unlock prompt on the device), +// so the editor can poll it while waiting for the user to unlock. +void getLockState(void); #endif diff --git a/resources/sources/Baremetal/modbus_frame.cpp b/resources/sources/Baremetal/modbus_frame.cpp index ae4055108..1ea3dd87c 100644 --- a/resources/sources/Baremetal/modbus_frame.cpp +++ b/resources/sources/Baremetal/modbus_frame.cpp @@ -12,10 +12,13 @@ uint16_t mb_frame_len; void exceptionResponse(uint16_t fcode, uint16_t excode) { - //Clean frame buffer (leave only SlaveID) + // Answer as the id that was addressed, not as the server's. The two differ + // whenever the editor's private codes are served on their own id alongside + // the Modbus server's, and over TCP where mb_frame[0] is the MBAP unit id. + const uint8_t addressed = mb_frame[0]; mb_frame_len = 3; for (int i = 0; i < mb_frame_len; i++) mb_frame[i] = 0; - mb_frame[0] = modbus.slaveid; + mb_frame[0] = addressed; mb_frame[1] = fcode + 0x80; mb_frame[2] = excode; } diff --git a/resources/sources/Baremetal/modbus_pdu.cpp b/resources/sources/Baremetal/modbus_pdu.cpp index 995ced8ab..f5fbea53d 100644 --- a/resources/sources/Baremetal/modbus_pdu.cpp +++ b/resources/sources/Baremetal/modbus_pdu.cpp @@ -39,7 +39,7 @@ int32_t mb_pdu_request_len(const uint8_t *f, uint16_t n) return 8; // [id][fc][endian:2][00:2][crc:2] case MB_FC_DEBUG_GET_STATUS: case MB_FC_DEBUG_GET_VERSION: - case MB_FC_DEBUG_GET_BOARD_ID: + case MB_FC_DEBUG_GET_DEVICE_ID: case MB_FC_DEBUG_READ_LICENSE: return 4; // [id][fc][crc:2] case MB_FC_DEBUG_WRITE_LICENSE: @@ -49,6 +49,10 @@ int32_t mb_pdu_request_len(const uint8_t *f, uint16_t n) return 6 + (int32_t)(((uint16_t)f[2] << 8) | f[3]); case MB_FC_PLC_SET_STATE: return 5; // [id][fc][state:1][crc:2] + case MB_FC_REBOOT_BOOTLOADER: + return 8; // [id][fc][magic:4][crc:2] + case MB_FC_GET_LOCK_STATE: + return 4; // [id][fc][crc:2] default: return -1; // not one of our function codes } @@ -68,7 +72,7 @@ bool mb_pdu_skips_crc(uint8_t fc) case MB_FC_DEBUG_GET_MD5: case MB_FC_DEBUG_GET_STATUS: case MB_FC_DEBUG_GET_VERSION: - case MB_FC_DEBUG_GET_BOARD_ID: + case MB_FC_DEBUG_GET_DEVICE_ID: case MB_FC_DEBUG_WRITE_LICENSE: case MB_FC_DEBUG_READ_LICENSE: return true; @@ -77,9 +81,54 @@ bool mb_pdu_skips_crc(uint8_t fc) } } +// The editor's function codes as a contiguous range. Kept separate from +// mb_pdu_skips_crc() on purpose: that set answers "does this frame carry a CRC", +// this one answers "is this the editor talking", and MB_FC_PLC_SET_STATE belongs +// to the second but not the first. +bool mb_pdu_is_editor_fc(uint8_t fc) +{ + // The whole debug range, 0x41..0x4D. Reboot-to-bootloader (0x4C) and + // lock-state (0x4D) are part of the editor's package like every other code + // here, so they get the same treatment on both sides of the id split: they + // must be answerable on the editor's private id, and they must be REFUSED + // on the Modbus server's public one. Leaving them out of the range did both + // wrongs at once -- unreachable where they belong, reachable where they do + // not -- which is why this ends at GET_LOCK_STATE and not at PLC_SET_STATE. + return fc >= MB_FC_DEBUG_INFO && fc <= MB_FC_GET_LOCK_STATE; +} + void process_mbpacket() { uint8_t fcode = mb_frame[1]; + + // Every case below indexes mb_frame[2..] for its operands, and until now + // none of them consulted mb_frame_len. Over RTU that was covered, because + // the framer will not hand over a frame whose length disagrees with + // mb_pdu_request_len(). Over TCP it was not: modbus_tcp.cpp reads the + // payload into mb_frame and only THEN discards a request that lied about + // its size, so the bytes of a rejected frame stayed in the buffer and the + // next, shorter frame dispatched on them. + // + // That defeated the 0x4C magic. Send an MBAP declaring 100 bytes with 6 + // that end in the magic (dropped, but mb_frame[2..5] now hold it), then an + // MBAP declaring 2 with [unit][4C]: rebootToBootloader(&mb_frame[2]) read + // the stale four and matched. plcSetState() and debugSetTrace() took stale + // operands the same way. + // + // mb_pdu_request_len() already knows each FC's shape; it returns the RTU + // frame length, which is this PDU plus the two CRC bytes TCP does not + // carry. A frame shorter than its own function code requires is malformed + // on any transport, so refuse it here rather than at one caller. + { + const int32_t rtu_len = mb_pdu_request_len(mb_frame, (uint16_t)(mb_frame_len + 2)); + if (rtu_len > 0 && (int32_t)mb_frame_len < rtu_len - 2) + { + mb_frame[1] = fcode | 0x80; + mb_frame[2] = MB_EX_ILLEGAL_VALUE; + mb_frame_len = 3; + return; + } + } #ifdef MODBUS_ENABLED // Standard Modbus fields — only used by the operation FCs, which are // compiled out in debug-only builds (so guard to avoid unused-var warnings). @@ -182,8 +231,8 @@ void process_mbpacket() debugGetVersion(); break; - case MB_FC_DEBUG_GET_BOARD_ID: - debugGetBoardId(); + case MB_FC_DEBUG_GET_DEVICE_ID: + debugGetDeviceId(); break; case MB_FC_DEBUG_WRITE_LICENSE: @@ -205,6 +254,18 @@ void process_mbpacket() plcSetState(mb_frame[2]); break; + case MB_FC_REBOOT_BOOTLOADER: + // PDU: [FC:1][magic:4] -- magic guards against an accidental reboot + // from a stray/probing frame. The device resets into its firmware + // bootloader so the host can re-flash without a physical power-cycle. + rebootToBootloader(&mb_frame[2]); + break; + + case MB_FC_GET_LOCK_STATE: + // PDU: [FC] -- read-only, so no magic guard. The editor polls this + // while it waits for the user to clear a programming lock. + getLockState(); + break; default: exceptionResponse(fcode, MB_EX_ILLEGAL_FUNCTION); diff --git a/resources/sources/Baremetal/modbus_pdu.h b/resources/sources/Baremetal/modbus_pdu.h index e0ff077bf..42ee0dfac 100644 --- a/resources/sources/Baremetal/modbus_pdu.h +++ b/resources/sources/Baremetal/modbus_pdu.h @@ -31,4 +31,10 @@ int32_t mb_pdu_request_len(const uint8_t *f, uint16_t n); // transport decide CRC handling without hardcoding the debug FC list. bool mb_pdu_skips_crc(uint8_t fc); +// True for the editor's private function codes, 0x41-0x4B. Deliberately NOT the +// same set as mb_pdu_skips_crc(): that one excludes MB_FC_PLC_SET_STATE, which +// does carry a CRC, and reusing it here would leave run/stop unreachable on the +// editor's own slave id. +bool mb_pdu_is_editor_fc(uint8_t fc); + #endif diff --git a/resources/sources/Baremetal/modbus_serial.cpp b/resources/sources/Baremetal/modbus_serial.cpp index c68f36a5c..8529b1a54 100644 --- a/resources/sources/Baremetal/modbus_serial.cpp +++ b/resources/sources/Baremetal/modbus_serial.cpp @@ -4,7 +4,7 @@ Copyright (C) 2022 OpenPLC - Thiago Alves */ #include "modbus_serial.h" -#include "modbus_pdu.h" // process_mbpacket, mb_pdu_request_len, mb_pdu_skips_crc +#include "modbus_pdu.h" // process_mbpacket, mb_pdu_request_len, mb_pdu_skips_crc, mb_pdu_is_editor_fc #include "modbus_crc.h" // calcCrc #if defined(CONTROLLINO_MAXI) || defined(CONTROLLINO_MEGA) @@ -80,12 +80,31 @@ void mbconfig_serial_iface(Stream* port, long baud, int txPin) // Persistent RX-assembly state. handle_serial() is called every scan cycle and // never blocks; a request whose bytes straddle several calls is carried across -// them in mb_frame[0..mb_rx_len). (This shares mb_frame with handle_tcp, which -// is safe because an OpenPLC board is configured for a single Modbus transport; -// the two are not driven mid-frame at the same time.) +// them in the port's assembly buffer. static uint16_t mb_rx_len = 0; static uint32_t mb_rx_last_ms = 0; +#ifdef MBTCP +// The single-serial path used mb_frame as its own assembly buffer, which is +// only safe while nothing else writes mb_frame between scan cycles. TCP does: +// mbtask() runs handle_tcp() FIRST, and a TCP request overwrites mb_frame from +// index 0 while mb_rx_len still describes a partial serial frame held across +// cycles. The framing logic then resyncs a byte at a time and the in-flight +// transaction is lost -- intermittent, and worst under exactly the TCP load a +// working installation produces. +// +// So in a build that also serves TCP the serial path gets a buffer of its own, +// and mb_frame goes back to being what the dual-serial path already treats it +// as: transient process/TX scratch, borrowed for one complete transaction. +// Compiled only where TCP is present, so a board without it keeps its +// footprint (MAX_MB_FRAME bytes: 128 on the small AVRs, 256 elsewhere). +// +// This covers the debug-only build too, not just MBSERIAL: the always-on +// debugger assembles its frames through this same path and was losing them the +// same way. +static uint8_t mb_rx_single[MAX_MB_FRAME]; +#endif + #ifdef MBSERIAL_ON_SECONDARY // Dual-serial: the debugger keeps the default serial while Modbus RTU runs on a // distinct UART. Each port needs its OWN RX assembly buffer — a partial frame on @@ -122,8 +141,15 @@ static void mb_rtu_drop_front(uint8_t *buf, uint16_t *plen, uint16_t k) // and the response written back to `port`. In the single-serial build `buf` IS // `mb_frame` (in-place, no copy); in the dual-serial build each port owns a // distinct buffer and `mb_frame` is the transient process/TX scratch. +// +// `editorid` is a SECOND id the port answers, carrying the editor's private +// function codes only. It lets the user's Modbus server keep an id of its own on +// the UART the editor is already using. Pass it equal to `slaveid` — the common +// case, and every port the editor does not sit on — and this costs nothing: the +// server's branch matches first and behaviour is exactly what it was. static void handle_serial_port(Stream *port, int8_t txpin, uint8_t slaveid, - uint8_t *buf, uint16_t *plen, uint32_t *plast) + uint8_t editorid, uint8_t *buf, uint16_t *plen, + uint32_t *plast) { uint16_t packet_crc; @@ -144,16 +170,35 @@ static void handle_serial_port(Stream *port, int8_t txpin, uint8_t slaveid, if (*plen == 0) return; - // Header byte-alignment: the first byte must be THIS port's slave id. - // This is the cheap framing check, and it is the ONLY validation applied - // to debugger frames (CRC is deliberately skipped on debug FCs for - // performance — those function codes are private and well-formed). - if (buf[0] != slaveid) + // Header byte-alignment: the first byte must be one of the ids THIS port + // answers. This is the cheap framing check, and it is the ONLY validation + // applied to debugger frames (CRC is deliberately skipped on debug FCs + // for performance — those function codes are private and well-formed). + const bool editor_only = (buf[0] != slaveid) && (buf[0] == editorid); + // The same split seen from the other side. Without it the routing runs + // one way only: an editor function code arriving on the SERVER's public + // id was dispatched like any other, which is the opposite of what this + // firmware documents. Not applicable when the user set the server to the + // editor's own id -- one id, one meaning. + const bool public_only = (buf[0] == slaveid) && (buf[0] != editorid); + + if (buf[0] != slaveid && !editor_only) { mb_rtu_drop_front(buf, plen, 1); // foreign/garbage head — slide continue; } + // The editor's id carries the editor's function codes and nothing else. + // Silence rather than an exception: the channel is private, and answering + // would tell whoever is scanning the bus that the address is live. Checked + // as soon as the FC byte exists, so a foreign request is not buffered + // whole before being discarded. + if (editor_only && *plen >= 2 && !mb_pdu_is_editor_fc(buf[1])) + { + mb_rtu_drop_front(buf, plen, 1); + continue; + } + int32_t expected = mb_pdu_request_len(buf, *plen); if (expected < 0 || expected > MAX_MB_FRAME) @@ -181,7 +226,11 @@ static void handle_serial_port(Stream *port, int8_t txpin, uint8_t slaveid, // Standard FCs are validated by CRC (the arbiter that makes resync // trustworthy); a mismatch means corruption or misalignment, so we // slide one byte and retry instead of discarding the whole buffer. - if (!mb_pdu_skips_crc(mb_frame[1])) + // CRC is skipped only on the EDITOR's id, where the private codes are + // well-formed by construction. On the public id every frame is validated, + // including an editor code -- otherwise the exception below would be + // answered to a frame nobody checked, on a bus with other slaves on it. + if (!editor_only || !mb_pdu_skips_crc(mb_frame[1])) { mb_frame_len = (uint16_t)expected; packet_crc = ((mb_frame[expected - 2] << 8) | mb_frame[expected - 1]); @@ -195,7 +244,18 @@ static void handle_serial_port(Stream *port, int8_t txpin, uint8_t slaveid, // 4) Accepted. Hand the PDU (CRC stripped) to the shared processor, // which builds the response back into mb_frame. mb_frame_len = (uint16_t)expected - 2; - process_mbpacket(); + + if (public_only && mb_pdu_is_editor_fc(mb_frame[1])) + { + // Refused rather than ignored: this IS the address the frame asked for, + // and a slave that drops a request to its own id leaves the master + // waiting out its timeout with nothing to say why. + exceptionResponse(mb_frame[1], MB_EX_ILLEGAL_FUNCTION); + } + else + { + process_mbpacket(); + } //Add CRC //Check if response message is too big for this device @@ -250,20 +310,35 @@ static void handle_serial_port(Stream *port, int8_t txpin, uint8_t slaveid, } // Dispatch to one or two serial ports. Single-serial: the debugger and Modbus -// RTU (if any) share one port, assembled in-place in mb_frame. Dual-serial +// RTU (if any) share one port, assembled in mb_frame when nothing else writes +// it, or in a buffer of its own when TCP is in the build. Dual-serial // (MBSERIAL_ON_SECONDARY): the debugger keeps the default serial while Modbus // RTU runs on a distinct UART — each with its own RX buffer. void handle_serial() { #ifdef MBSERIAL_ON_SECONDARY - handle_serial_port(&DEBUG_IFACE, -1, DEBUG_SLAVE, mb_rx_dbg, &mb_rx_dbg_len, &mb_rx_dbg_last_ms); + handle_serial_port(&DEBUG_IFACE, -1, DEBUG_SLAVE, DEBUG_SLAVE, mb_rx_dbg, &mb_rx_dbg_len, &mb_rx_dbg_last_ms); + // The editor is not on this UART, so it answers the server's id alone. #ifdef MBSERIAL_TXPIN - handle_serial_port(&MBSERIAL_IFACE, MBSERIAL_TXPIN, MBSERIAL_SLAVE, mb_rx_rtu, &mb_rx_rtu_len, &mb_rx_rtu_last_ms); + handle_serial_port(&MBSERIAL_IFACE, MBSERIAL_TXPIN, MBSERIAL_SLAVE, MBSERIAL_SLAVE, mb_rx_rtu, &mb_rx_rtu_len, &mb_rx_rtu_last_ms); #else - handle_serial_port(&MBSERIAL_IFACE, -1, MBSERIAL_SLAVE, mb_rx_rtu, &mb_rx_rtu_len, &mb_rx_rtu_last_ms); + handle_serial_port(&MBSERIAL_IFACE, -1, MBSERIAL_SLAVE, MBSERIAL_SLAVE, mb_rx_rtu, &mb_rx_rtu_len, &mb_rx_rtu_last_ms); #endif #else - handle_serial_port(mb_serialport, mb_txpin, modbus.slaveid, mb_frame, &mb_rx_len, &mb_rx_last_ms); + // One UART for both. The editor answers its own id here, so the server's is + // whatever the project set it to. + #ifdef MB_EDITOR_SLAVE + const uint8_t editor_id = MB_EDITOR_SLAVE; + #else + // No debugger in this build: nothing to keep reachable beside the server, + // so the second id is the first and the extra branch never fires. + const uint8_t editor_id = modbus.slaveid; + #endif + #ifdef MBTCP + handle_serial_port(mb_serialport, mb_txpin, modbus.slaveid, editor_id, mb_rx_single, &mb_rx_len, &mb_rx_last_ms); + #else + handle_serial_port(mb_serialport, mb_txpin, modbus.slaveid, editor_id, mb_frame, &mb_rx_len, &mb_rx_last_ms); + #endif #endif } #endif // MB_SERIAL_ACTIVE diff --git a/resources/sources/Baremetal/modbus_tcp.cpp b/resources/sources/Baremetal/modbus_tcp.cpp index ec9e88afd..344eb9f4e 100644 --- a/resources/sources/Baremetal/modbus_tcp.cpp +++ b/resources/sources/Baremetal/modbus_tcp.cpp @@ -3,31 +3,48 @@ modbus_tcp.cpp - Modbus TCP transport (Ethernet / WiFi / ESP ETH) Copyright (C) 2022 OpenPLC - Thiago Alves */ +#include // memset -- wiping a discarded frame + #include "modbus_tcp.h" #include "modbus_pdu.h" // process_mbpacket -#ifdef MBTCP_ETHERNET +// The listen port travels with the project's Modbus server. A firmware built +// before it did -- or by a toolchain that does not emit it -- keeps the IANA +// default it always listened on. +#ifndef MBTCP_PORT + #define MBTCP_PORT 502 +#endif + +#if defined(MBTCP_ETHERNET) && defined(MB_TCP_ACTIVE) #ifdef BOARD_ESP32 - WiFiServer mb_server(502); + WiFiServer mb_server(MBTCP_PORT); WiFiClient mb_serverClients[MAX_SRV_CLIENTS]; #else - EthernetServer mb_server(502); + EthernetServer mb_server(MBTCP_PORT); #endif uint8_t mb_mbap[MBAP_SIZE]; -#ifdef BOARD_PORTENTA +// The Ethernet route's client table. The multi-client block in handle_tcp() +// is entered for PORTENTA and PICOW alike, so both need the array; declaring it +// for only one of them is why a Pico W with an Ethernet module failed to +// compile at modbus_tcp.cpp:137 with 'mb_serverClients' was not declared. +#if defined(BOARD_PORTENTA) || defined(BOARD_PICOW) EthernetClient mb_serverClients[MAX_SRV_CLIENTS]; #endif #endif -#ifdef MBTCP_WIFI - WiFiServer mb_server(502); +#if defined(MBTCP_WIFI) && defined(MB_TCP_ACTIVE) + WiFiServer mb_server(MBTCP_PORT); uint8_t mb_mbap[MBAP_SIZE]; #if defined(BOARD_ESP8266) || defined(BOARD_ESP32) || defined(BOARD_PORTENTA) || defined(BOARD_PICOW) WiFiClient mb_serverClients[MAX_SRV_CLIENTS]; #endif #endif -#ifdef MBTCP +// Bringing the link up is the NETWORK's job, not the Modbus server's. It used +// to live under MBTCP, so a project that enabled the network without serving +// Modbus TCP compiled a firmware that never configured the interface -- fine on +// a USB board, fatal on one reached only over Ethernet. +#if defined(OPLC_NET_ENABLED) void mbconfig_ethernet_iface(uint8_t *mac, uint8_t *ip, uint8_t *dns, uint8_t *gateway, uint8_t *subnet) { #ifdef MBTCP_ETHERNET @@ -39,6 +56,13 @@ void mbconfig_ethernet_iface(uint8_t *mac, uint8_t *ip, uint8_t *dns, uint8_t *g (ETH.config(ip, gateway, subnet, dns)); #else + // The module's chip select, when the board says where it is. Both + // libraries default to pin 10 (the Uno shield's wiring), which is + // wrong on every board that is not an Uno -- the Pico's SPI0 CS is + // 17. Must precede begin(), which is what talks to the chip. + #ifdef MBTCP_ETH_CS + Ethernet.init(MBTCP_ETH_CS); + #endif if (ip == NULL) Ethernet.begin(mac); else if (dns == NULL) @@ -67,7 +91,6 @@ void mbconfig_ethernet_iface(uint8_t *mac, uint8_t *ip, uint8_t *dns, uint8_t *g uint8_t secondaryDNS[] = {8, 8, 8, 8}; WiFi.config(IPAddress(ip), IPAddress(gateway), IPAddress(subnet), IPAddress(dns), IPAddress(secondaryDNS)); } - mb_server.setNoDelay(true); #elif defined(BOARD_PORTENTA) if (ip != NULL && subnet != NULL && gateway != NULL) { @@ -96,8 +119,20 @@ void mbconfig_ethernet_iface(uint8_t *mac, uint8_t *ip, uint8_t *dns, uint8_t *g } #endif - mb_server.begin(); +} + +#endif // OPLC_NET_ENABLED +#ifdef MB_TCP_ACTIVE +/** Start listening for Modbus TCP. Separate from the link bring-up above + * because a board can have a network without serving Modbus over it -- the + * debugger, the ethernet upload, OPC-UA and S7Comm all use the same link. */ +void mbtcp_server_begin(void) +{ + #if defined(MBTCP_WIFI) && (defined(BOARD_ESP8266) || defined(BOARD_ESP32)) + mb_server.setNoDelay(true); + #endif + mb_server.begin(); } void handle_tcp() @@ -267,7 +302,21 @@ void handle_tcp() } //Safety check - discard packages that lie about their size - if (i != mb_frame_len) return; + if (i != mb_frame_len) + { + // Wipe what the liar wrote. The bytes are already in + // mb_frame, and process_mbpacket() dispatches on the buffer + // rather than on the read length, so leaving them let a + // SHORT follow-up frame execute on this frame's operands — + // which is how a rejected frame carrying the 0x4C magic + // could arm a later bare reboot request. There is a + // per-FC length guard in process_mbpacket() now too; this + // is the other half, so no stale operand survives the + // request that carried it. + memset(mb_frame, 0, i); + mb_frame_len = 0; + return; + } //Process packet and write back process_mbpacket(); diff --git a/resources/sources/Baremetal/modbus_tcp.h b/resources/sources/Baremetal/modbus_tcp.h index dcfec3c38..8ff325a5e 100644 --- a/resources/sources/Baremetal/modbus_tcp.h +++ b/resources/sources/Baremetal/modbus_tcp.h @@ -15,6 +15,13 @@ back — no knowledge of the function-code set. //Platform specific defines and includes #ifdef MBTCP_ETHERNET +#if defined(BOARD_LOGO8) + // Siemens LOGO! 8: Ethernet is the on-chip 10/100 EMAC+PHY, driven by the + // Energia lwIP — there is no SPI Ethernet shield, and the core's + // hard-errors on this variant, so it must NOT be pulled in here. + // Same EthernetServer/EthernetClient API as the WIZnet path. + #include +#else #include #ifdef BOARD_ESP32 // I²C-address of Ethernet PHY (0 or 1 for LAN8720, 31 for TLK110) @@ -31,10 +38,19 @@ back — no knowledge of the function-code set. #define ETH_CLK_MODE ETH_CLOCK_GPIO0_IN // DEFAULT VALUE YOU CAN OMIT IT #include #include +#elif defined(MBTCP_ETH_ENC28J60) + // Microchip ENC28J60. A different part with its own driver, not a WIZnet + // variant: EthernetENC is API-compatible down to the class names, so + // nothing below this include changes. + #include #else + // WIZnet W5100 / W5200 / W5500. One include for all three -- the library + // probes the chip in begin() and configures itself, so the VPP's driver + // selector picks the LIBRARY, not the chip. #include #endif #endif +#endif #ifdef MBTCP_WIFI #if defined(BOARD_ESP8266) @@ -49,19 +65,19 @@ back — no knowledge of the function-code set. #endif #endif -#ifdef MBTCP_ETHERNET +#if defined(MBTCP_ETHERNET) && defined(MB_TCP_ACTIVE) #ifdef BOARD_ESP32 extern WiFiServer mb_server; #else extern EthernetServer mb_server; #endif extern uint8_t mb_mbap[MBAP_SIZE]; -#ifdef BOARD_PORTENTA +#if defined(BOARD_PORTENTA) || defined(BOARD_PICOW) extern EthernetClient mb_serverClients[MAX_SRV_CLIENTS]; #endif #endif -#ifdef MBTCP_WIFI +#if defined(MBTCP_WIFI) && defined(MB_TCP_ACTIVE) extern WiFiServer mb_server; extern uint8_t mb_mbap[MBAP_SIZE]; #if defined(BOARD_ESP8266) || defined(BOARD_ESP32) || defined(BOARD_PORTENTA) || defined(BOARD_PICOW) @@ -69,8 +85,18 @@ back — no knowledge of the function-code set. #endif #endif -#ifdef MBTCP +// The link bring-up follows the NETWORK, not Modbus: setup() calls it whenever +// the project enabled the Network screen, with or without a Modbus server. +#if defined(OPLC_NET_ENABLED) void mbconfig_ethernet_iface(uint8_t *mac, uint8_t *ip, uint8_t *dns, uint8_t *gateway, uint8_t *subnet); +#endif + +// The listener and its service loop follow MB_TCP_ACTIVE, so the debugger keeps +// its transport on a board where the network is the only way in. +#ifdef MB_TCP_ACTIVE +/** Start the TCP listener: Modbus TCP when the project serves it, and the + * debugger's transport regardless on a board with no accessible UART. */ +void mbtcp_server_begin(void); void handle_tcp(); #endif diff --git a/resources/sources/Baremetal/modbus_types.h b/resources/sources/Baremetal/modbus_types.h index be8fb1d5a..e7da16219 100644 --- a/resources/sources/Baremetal/modbus_types.h +++ b/resources/sources/Baremetal/modbus_types.h @@ -27,10 +27,25 @@ protocol, transport, register and debug layers agree on the same contracts. #define COILS 0 #define INPUTSTATUS 1 +// Widest single value the debug READ path can put on the wire. The numbers live +// on the C-ABI surface (arduino_runtime_glue.h), which is where strucpp's +// constants are mirrored for callers that cannot include its C++17 headers, and +// a static_assert there holds them to the real ones. +#include "arduino_runtime_glue.h" +// Bytes the DEBUG_GET response spends before its first value. +#define MB_DEBUG_GET_HEADER 11 + +// The frame has to hold that header plus the widest value the target can +// produce, or that value can never be read at all -- it is skipped in silence, +// and the read returns nothing. +// +// The small AVRs keep the 128 they have always had. An `IECWStringVar<254>` is +// ~1020 bytes of SRAM on its own, more than an ATmega168 has in total, so a +// WSTRING cannot be declared on those parts and there is nothing here to fix. #if defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__) || defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega16U4__) #define MAX_MB_FRAME 128 #else - #define MAX_MB_FRAME 256 + #define MAX_MB_FRAME (MB_DEBUG_GET_HEADER + OPENPLC_DEBUG_WSTRING_WIRE + 8) /* 272 */ #endif #define MAX_SRV_CLIENTS 3 //how many clients should be able to connect to TCP server at the same time #define MBAP_SIZE 6 @@ -55,6 +70,10 @@ protocol, transport, register and debug layers agree on the same contracts. // warning rather than a generic failure. It doesn't collide with Modbus // exceptions (0x01-0x04) nor 0x7E/0x81/0x82. #define MB_PLC_CTRL_REFUSED_SWITCH 0x86 +// MB_FC_REBOOT_BOOTLOADER only: well-formed but refused because the device's +// programming lock is engaged. Not an error code, because the editor keeps +// asking for a few seconds while the user clears the lock at the device. +#define MB_REFUSED_LOCKED 0x6C //Modbus registers struct struct MBinfo { @@ -90,10 +109,12 @@ enum { MB_FC_DEBUG_GET_MD5 = 0x45, // Debug get current program MD5 MB_FC_DEBUG_GET_STATUS = 0x46, // Debug get PLC status (running, scan tick, uptime) MB_FC_DEBUG_GET_VERSION = 0x47, // Debug get runtime firmware version - MB_FC_DEBUG_GET_BOARD_ID = 0x48, // Debug get unique hardware board ID + MB_FC_DEBUG_GET_DEVICE_ID = 0x48, // Debug get this board's licensing device_id MB_FC_DEBUG_WRITE_LICENSE = 0x49, // Debug write license blob to on-device storage MB_FC_DEBUG_READ_LICENSE = 0x4A, // Debug read license blob from on-device storage MB_FC_PLC_SET_STATE = 0x4B, // Set the runtime run/stop state + MB_FC_REBOOT_BOOTLOADER = 0x4C, // Reboot the device into its firmware bootloader (magic-guarded) + MB_FC_GET_LOCK_STATE = 0x4D, // Read the device's programming-lock state (read-only) }; //Exception Codes diff --git a/resources/sources/Baremetal/opcua_auth.cpp b/resources/sources/Baremetal/opcua_auth.cpp new file mode 100644 index 000000000..02830ad60 --- /dev/null +++ b/resources/sources/Baremetal/opcua_auth.cpp @@ -0,0 +1,453 @@ +/* +opcua_auth.cpp - PBKDF2-HMAC-SHA256 password verification +Copyright (C) 2026 Autonomy Logic + +See opcua_auth.h for why the iteration count is the interesting part. +*/ + +#include "opcua_config.h" + +#if OPCUA_ENABLED + +#include +#include + +#include "opcua_auth.h" +#include "opcua_log.h" + +/** Most iterations this target will actually execute. Not the same knob as the + * VPP's `kdfIterations`: that says what the editor should hash with, this says + * what the runtime will tolerate inside a scan cycle. */ +#ifndef OPCUA_KDF_MAX_ITERATIONS +#define OPCUA_KDF_MAX_ITERATIONS 20000u +#endif + +namespace { + +// --------------------------------------------------------------------------- +// SHA-256 (FIPS 180-4). Straightforward, unrolled only where it is free. +// --------------------------------------------------------------------------- + +struct Sha256 +{ + uint32_t state[8]; + uint64_t bitlen; + uint8_t buf[64]; + uint8_t buflen; +}; + +const uint32_t K[64] = { + 0x428a2f98u,0x71374491u,0xb5c0fbcfu,0xe9b5dba5u,0x3956c25bu,0x59f111f1u,0x923f82a4u,0xab1c5ed5u, + 0xd807aa98u,0x12835b01u,0x243185beu,0x550c7dc3u,0x72be5d74u,0x80deb1feu,0x9bdc06a7u,0xc19bf174u, + 0xe49b69c1u,0xefbe4786u,0x0fc19dc6u,0x240ca1ccu,0x2de92c6fu,0x4a7484aau,0x5cb0a9dcu,0x76f988dau, + 0x983e5152u,0xa831c66du,0xb00327c8u,0xbf597fc7u,0xc6e00bf3u,0xd5a79147u,0x06ca6351u,0x14292967u, + 0x27b70a85u,0x2e1b2138u,0x4d2c6dfcu,0x53380d13u,0x650a7354u,0x766a0abbu,0x81c2c92eu,0x92722c85u, + 0xa2bfe8a1u,0xa81a664bu,0xc24b8b70u,0xc76c51a3u,0xd192e819u,0xd6990624u,0xf40e3585u,0x106aa070u, + 0x19a4c116u,0x1e376c08u,0x2748774cu,0x34b0bcb5u,0x391c0cb3u,0x4ed8aa4au,0x5b9cca4fu,0x682e6ff3u, + 0x748f82eeu,0x78a5636fu,0x84c87814u,0x8cc70208u,0x90befffau,0xa4506cebu,0xbef9a3f7u,0xc67178f2u }; + +inline uint32_t ror(uint32_t x, uint32_t n) { return (x >> n) | (x << (32 - n)); } + +void sha256_block(Sha256* c, const uint8_t* p) +{ + uint32_t w[64]; + for (uint8_t i = 0; i < 16; i++) + w[i] = ((uint32_t)p[i*4] << 24) | ((uint32_t)p[i*4+1] << 16) | + ((uint32_t)p[i*4+2] << 8) | (uint32_t)p[i*4+3]; + for (uint8_t i = 16; i < 64; i++) + { + const uint32_t s0 = ror(w[i-15],7) ^ ror(w[i-15],18) ^ (w[i-15] >> 3); + const uint32_t s1 = ror(w[i-2],17) ^ ror(w[i-2],19) ^ (w[i-2] >> 10); + w[i] = w[i-16] + s0 + w[i-7] + s1; + } + uint32_t a=c->state[0],b=c->state[1],cc=c->state[2],d=c->state[3]; + uint32_t e=c->state[4],f=c->state[5],g=c->state[6],h=c->state[7]; + for (uint8_t i = 0; i < 64; i++) + { + const uint32_t S1 = ror(e,6) ^ ror(e,11) ^ ror(e,25); + const uint32_t ch = (e & f) ^ ((~e) & g); + const uint32_t t1 = h + S1 + ch + K[i] + w[i]; + const uint32_t S0 = ror(a,2) ^ ror(a,13) ^ ror(a,22); + const uint32_t mj = (a & b) ^ (a & cc) ^ (b & cc); + const uint32_t t2 = S0 + mj; + h=g; g=f; f=e; e=d+t1; d=cc; cc=b; b=a; a=t1+t2; + } + c->state[0]+=a; c->state[1]+=b; c->state[2]+=cc; c->state[3]+=d; + c->state[4]+=e; c->state[5]+=f; c->state[6]+=g; c->state[7]+=h; +} + +void sha256_init(Sha256* c) +{ + c->state[0]=0x6a09e667u; c->state[1]=0xbb67ae85u; c->state[2]=0x3c6ef372u; c->state[3]=0xa54ff53au; + c->state[4]=0x510e527fu; c->state[5]=0x9b05688cu; c->state[6]=0x1f83d9abu; c->state[7]=0x5be0cd19u; + c->bitlen=0; c->buflen=0; +} + +void sha256_update(Sha256* c, const uint8_t* d, size_t n) +{ + for (size_t i = 0; i < n; i++) + { + c->buf[c->buflen++] = d[i]; + if (c->buflen == 64) { sha256_block(c, c->buf); c->bitlen += 512; c->buflen = 0; } + } +} + +void sha256_final(Sha256* c, uint8_t out[32]) +{ + uint64_t bits = c->bitlen + (uint64_t)c->buflen * 8; + uint8_t i = c->buflen; + c->buf[i++] = 0x80; + if (i > 56) { while (i < 64) c->buf[i++] = 0; sha256_block(c, c->buf); i = 0; } + while (i < 56) c->buf[i++] = 0; + for (int8_t k = 7; k >= 0; k--) c->buf[i++] = (uint8_t)(bits >> (k*8)); + sha256_block(c, c->buf); + for (uint8_t k = 0; k < 8; k++) + { + out[k*4] = (uint8_t)(c->state[k] >> 24); + out[k*4+1] = (uint8_t)(c->state[k] >> 16); + out[k*4+2] = (uint8_t)(c->state[k] >> 8); + out[k*4+3] = (uint8_t)(c->state[k]); + } +} + +// HMAC-SHA256, with the key schedule hoisted out of the PBKDF2 loop: the inner +// and outer padded-key states are computed once and copied per iteration, which +// removes two block compressions per iteration out of four. + +struct HmacKey { Sha256 inner; Sha256 outer; }; + +void hmac_key_init(HmacKey* hk, const uint8_t* key, size_t keylen) +{ + uint8_t k[64]; + memset(k, 0, sizeof(k)); + if (keylen > 64) + { + Sha256 t; sha256_init(&t); sha256_update(&t, key, keylen); sha256_final(&t, k); + } + else memcpy(k, key, keylen); + + uint8_t pad[64]; + for (uint8_t i = 0; i < 64; i++) pad[i] = k[i] ^ 0x36; + sha256_init(&hk->inner); sha256_update(&hk->inner, pad, 64); + for (uint8_t i = 0; i < 64; i++) pad[i] = k[i] ^ 0x5c; + sha256_init(&hk->outer); sha256_update(&hk->outer, pad, 64); +} + +void hmac_with(const HmacKey* hk, const uint8_t* msg, size_t len, uint8_t out[32]) +{ + Sha256 c = hk->inner; + sha256_update(&c, msg, len); + uint8_t ih[32]; sha256_final(&c, ih); + Sha256 o = hk->outer; + sha256_update(&o, ih, 32); + sha256_final(&o, out); +} + +// --------------------------------------------------------------------------- +// base64 decode (no padding assumptions beyond '=') +// --------------------------------------------------------------------------- + +int8_t b64val(char ch) +{ + if (ch >= 'A' && ch <= 'Z') return (int8_t)(ch - 'A'); + if (ch >= 'a' && ch <= 'z') return (int8_t)(ch - 'a' + 26); + if (ch >= '0' && ch <= '9') return (int8_t)(ch - '0' + 52); + if (ch == '+') return 62; + if (ch == '/') return 63; + return -1; +} + +size_t b64decode(const char* s, size_t slen, uint8_t* out, size_t outcap) +{ + uint32_t acc = 0; uint8_t bits = 0; size_t n = 0; + for (size_t i = 0; i < slen; i++) + { + const int8_t v = b64val(s[i]); + if (v < 0) continue; // '=' and any stray whitespace + acc = (acc << 6) | (uint32_t)v; bits += 6; + if (bits >= 8) + { + bits -= 8; + if (n < outcap) out[n++] = (uint8_t)(acc >> bits); + } + } + return n; +} + +uint32_t g_last_us = 0; + +} // namespace + +bool opcua_auth_verify(const char* password, size_t password_len, const char* stored) +{ + const unsigned long t0 = micros(); + bool ok = false; + + if (stored == nullptr) + return false; + + // plain: -- what this target asks the build for, so this runtime + // never runs a KDF it cannot afford. A weaker credential at rest, but this + // target runs OPC-UA without encryption, so the password already crosses the + // network in clear. + if (strncmp(stored, "plain:", 6) == 0) + { + const char* want_pw = stored + 6; + const size_t want_len = strlen(want_pw); + // Constant-time in the comparison, and length-checked first so the loop + // below cannot read past either buffer. + uint8_t diff = (uint8_t)((want_len == password_len) ? 0 : 1); + const size_t n = (want_len < password_len) ? want_len : password_len; + for (size_t i = 0; i < n; i++) + diff |= (uint8_t)(want_pw[i] ^ password[i]); + g_last_us = (uint32_t)(micros() - t0); + OPCUA_LOG("[auth] plain compare took=%luus -> %s", + (unsigned long)g_last_us, (diff == 0) ? "OK" : "REJECT"); + return diff == 0; + } + + // pbkdf2:sha256:$$ + if (strncmp(stored, "pbkdf2:sha256:", 14) != 0) + return false; + + const char* p = stored + 14; + uint32_t iters = 0; + while (*p >= '0' && *p <= '9') { iters = iters * 10u + (uint32_t)(*p - '0'); p++; } + if (*p != '$' || iters == 0 || iters > 2000000u) + return false; + p++; + + // Hard ceiling, protecting the scan cycle rather than the password. + // open62541's AccessControl::activateSession is synchronous with no deferral + // path in a single-threaded build, so the whole KDF runs inside one scan; at + // a Linux runtime's default iteration count that is over a minute of stalled + // PLC, triggerable by any client that knows a username. + if (iters > OPCUA_KDF_MAX_ITERATIONS) + { + OPCUA_LOG("[auth] REFUSED: hash needs %lu iterations, target allows %lu " + "(~%lu ms of stalled scan) — see plan 4.4", + (unsigned long)iters, (unsigned long)OPCUA_KDF_MAX_ITERATIONS, + (unsigned long)((uint64_t)iters * 124u / 1000u)); + return false; + } + + const char* salt_b64 = p; + const char* dollar = strchr(p, '$'); + if (dollar == nullptr) + return false; + const size_t salt_b64_len = (size_t)(dollar - salt_b64); + const char* hash_b64 = dollar + 1; + + uint8_t salt[32]; + uint8_t want[32]; + const size_t salt_len = b64decode(salt_b64, salt_b64_len, salt, sizeof(salt)); + const size_t want_len = b64decode(hash_b64, strlen(hash_b64), want, sizeof(want)); + if (salt_len == 0 || want_len != 32) + return false; + + // PBKDF2 with dkLen == hLen: exactly one block, INT(1) appended to the salt. + HmacKey hk; + hmac_key_init(&hk, (const uint8_t*)password, password_len); + + uint8_t msg[36]; + memcpy(msg, salt, salt_len); + msg[salt_len] = 0; msg[salt_len+1] = 0; msg[salt_len+2] = 0; msg[salt_len+3] = 1; + + uint8_t u[32], acc[32]; + hmac_with(&hk, msg, salt_len + 4, u); + memcpy(acc, u, 32); + for (uint32_t i = 1; i < iters; i++) + { + hmac_with(&hk, u, 32, u); + for (uint8_t k = 0; k < 32; k++) acc[k] ^= u[k]; + } + + // Constant-time compare: never leak how much of the hash matched. + uint8_t diff = 0; + for (uint8_t k = 0; k < 32; k++) diff |= (uint8_t)(acc[k] ^ want[k]); + ok = (diff == 0); + + g_last_us = (uint32_t)(micros() - t0); + OPCUA_LOG("[auth] pbkdf2 iters=%lu took=%luus -> %s", + (unsigned long)iters, (unsigned long)g_last_us, ok ? "OK" : "REJECT"); + return ok; +} + +uint32_t opcua_auth_last_us(void) { return g_last_us; } + +namespace { + +/** What THIS session may do to THIS node. + * + * `sessionContext` is the role login_cb stored; `nodeContext` is the + * `opcua_node_t*` materialisation registered. A session with no context is + * treated as viewer -- the least privilege we have a name for -- rather than + * as unrestricted. + * + * This is the per-session HALF of the decision, not the whole of it: the caller + * masks whatever comes back with the node's own AccessLevel attribute. So the + * answer for a node this table does not own is 0xFF (defer to the node), never + * 0 (refuse it outright). */ +UA_Byte user_access_level_cb(UA_Server* server, UA_AccessControl* ac, + const UA_NodeId* sessionId, void* sessionContext, + const UA_NodeId* nodeId, void* nodeContext) +{ + (void)server; (void)ac; (void)sessionId; (void)nodeId; + const opcua_node_t* row = static_cast(nodeContext); + if (row == nullptr) + { + // Not one of our rows -- every namespace-zero node, which carries no + // context. 0xFF is what the library's own default returns, and it does + // NOT mean "expose everything": the caller computes + // + // node->accessLevel & getUserAccessLevel(...) + // + // so the node's own AccessLevel attribute is still the gate, and ns0 + // variables are read-only by that attribute. Returning 0 here instead + // ANDed all of namespace zero down to no access, which refused + // Server_ServerStatus_State with BadUserAccessDenied -- the node nearly + // every OPC-UA client's connection watchdog polls. The visible symptom + // was the session dying about a second after connect, whatever it was + // or was not doing. + return 0xFF; + } + + const uint8_t role = (uint8_t)(uintptr_t)sessionContext; + const uint8_t perms = opcua_perm_for_role(row->perms, role); + + UA_Byte level = 0; + if (perms & OPCUA_PERM_READ) level |= UA_ACCESSLEVELMASK_READ; + if (perms & OPCUA_PERM_WRITE) level |= UA_ACCESSLEVELMASK_WRITE; + return level; +} + +/** open62541 hands us the username and the cleartext password (it has already + * undone whatever the token's security policy applied), which is the only point + * in the system where the password exists in the clear. It is not copied or + * logged. */ +UA_StatusCode login_cb(const UA_String* userName, const UA_ByteString* password, + size_t loginSize, const UA_UsernamePasswordLogin* logins, + void** sessionContext, void* loginContext) +{ + (void)loginSize; (void)logins; (void)loginContext; + if (userName == nullptr || password == nullptr) + return UA_STATUSCODE_BADUSERACCESSDENIED; + + // An anonymous token reaches this callback too: this fork's + // activateSession_default calls the login callback for the Anonymous branch + // as well, with both strings empty. + // + // Both empty is that anonymous call, and it is accepted only if the project + // actually offers Anonymous. An empty username with a NON-empty password is + // something else entirely -- a UserName token any client can send, which + // the library does not pre-reject (it refuses only empty-name-AND-empty- + // password) and which used to be answered GOOD here. That handed out a full + // session with no password check and no role, on a server with users + // configured. It is a UserName token with no user, so it is refused. + if (userName->length == 0) + { + if (password->length != 0) + return UA_STATUSCODE_BADUSERACCESSDENIED; +#if OPCUA_ALLOW_ANONYMOUS + // Anonymous carries a role like every other session, so the permission + // check downstream has something to decide with. + if (sessionContext != nullptr) + *sessionContext = (void*)(uintptr_t)OPCUA_ANONYMOUS_ROLE; + return UA_STATUSCODE_GOOD; +#else + return UA_STATUSCODE_BADUSERACCESSDENIED; +#endif + } + +#if OPCUA_USER_COUNT > 0 + for (uint16_t i = 0; i < OPCUA_USER_COUNT; i++) + { + const char* u = OPCUA_USERS[i].username; + const size_t ulen = strlen(u); + if (ulen != userName->length || memcmp(u, userName->data, ulen) != 0) + continue; + if (!opcua_auth_verify((const char*)password->data, password->length, + OPCUA_USERS[i].password_hash)) + break; // right user, wrong password: do not try the others + // The role rides on the session so per-role permissions can use it once + // they are enforced per session rather than any-role. + if (sessionContext != nullptr) + *sessionContext = (void*)(uintptr_t)OPCUA_USERS[i].role; + return UA_STATUSCODE_GOOD; + } +#else + (void)sessionContext; +#endif + return UA_STATUSCODE_BADUSERACCESSDENIED; +} + +} // namespace + +UA_StatusCode opcua_auth_install(UA_ServerConfig* config) +{ + if (config == nullptr) + return UA_STATUSCODE_BADINVALIDARGUMENT; + + // From the project's security profiles, not inferred from the user count. + // "No users declared" and "anonymous is offered" are different statements, + // and treating them as one silently overrode the profile in both directions. + const UA_Boolean allow_anonymous = (OPCUA_ALLOW_ANONYMOUS != 0); + + // One placeholder login entry, and it is not optional. + // + // UA_AccessControl_default only registers the UserName token policy on the + // endpoint when usernamePasswordLoginSize > 0; a callback alone registers + // nothing. The entry's contents are never consulted, because the token + // handler calls the loginCallback instead of matching the static list. + static UA_UsernamePasswordLogin placeholder; + placeholder.username = UA_STRING_NULL; + placeholder.password = UA_STRING_NULL; + + // Username tokens travel in the clear on a #None endpoint and open62541 + // refuses that by default: selectTokenPolicy() skips a UserName policy when + // both channel and token policy are #None unless this flag is set. Opting in + // is the only way username auth can exist with no encrypting SecurityPolicy. + config->allowNonePolicyPassword = true; + + // Username tokens travel in the clear on a #None endpoint. A property of + // running without encryption, not of this code; the library warns about it + // too, and the VPP's security capability has to say so. + const UA_StatusCode rc = UA_AccessControl_defaultWithLoginCallback( + config, allow_anonymous, nullptr, + (OPCUA_USER_COUNT > 0) ? 1 : 0, &placeholder, login_cb, nullptr); + + // Per-session permissions. The role is collected at login and, until now, + // discarded: `read_node`/`write_node` void their sessionContext and a node + // is advertised writable if ANY role may write it, so every session got the + // most permissive answer in the table. + // + // UserAccessLevel is the per-session counterpart of the static AccessLevel + // attribute -- the node says what it CAN do, the session says what THIS + // caller may do -- which is exactly the split the packed permission byte + // was built for. open62541 consults it on both the read and the write path, + // and hands back the sessionContext (our role) and the nodeContext (the + // row), so the decision needs no lookup. + if (rc == UA_STATUSCODE_GOOD) + config->accessControl.getUserAccessLevel = user_access_level_cb; + OPCUA_LOG("[auth] access control: %u user(s), anonymous %s, rc=0x%08lx", + (unsigned)OPCUA_USER_COUNT, allow_anonymous ? "allowed" : "refused", + (unsigned long)rc); + return rc; +} + +uint8_t opcua_auth_role_of(const char* username, size_t len) +{ +#if OPCUA_USER_COUNT > 0 + for (uint16_t i = 0; i < OPCUA_USER_COUNT; i++) + { + const char* u = OPCUA_USERS[i].username; + if (strlen(u) == len && memcmp(u, username, len) == 0) + return OPCUA_USERS[i].role; + } +#else + (void)username; (void)len; +#endif + return 0xFF; +} + +#endif // OPCUA_ENABLED diff --git a/resources/sources/Baremetal/opcua_auth.h b/resources/sources/Baremetal/opcua_auth.h new file mode 100644 index 000000000..d3c19d124 --- /dev/null +++ b/resources/sources/Baremetal/opcua_auth.h @@ -0,0 +1,46 @@ +/* +opcua_auth.h - username/password verification for the OPC-UA server +Copyright (C) 2026 Autonomy Logic + +The editor stores OPC-UA passwords as +`pbkdf2:sha256:$$`, which the generated +OPCUA_USERS[] carries verbatim. + +The iteration count is chosen for a Linux runtime and cannot run inside a PLC +scan on a part with no SHA-256 accelerator. Chunking across scans does not help, +because open62541's AccessControl::activateSession returns synchronously with no +deferral path, so the policy question is how many iterations to ask for. +*/ + +#ifndef OPCUA_AUTH_H +#define OPCUA_AUTH_H + +#include "opcua_config.h" + +#if OPCUA_ENABLED + +#include +#include + +#include + +/** Verify `password` against an editor-format hash string. Returns true only on + * a match. Constant-time in the final comparison; the KDF's iteration count is + * public anyway. */ +bool opcua_auth_verify(const char* password, size_t password_len, + const char* stored_hash); + +/** Microseconds the last verification took, for the scan-impact census. */ +uint32_t opcua_auth_last_us(void); + +/** Role of `username`, or 0xFF when unknown. */ +uint8_t opcua_auth_role_of(const char* username, size_t len); + +/** Install username/password access control on `config`. + * + * Anonymous access stays enabled when the project declares no users. With users + * declared, anonymous is refused. */ +UA_StatusCode opcua_auth_install(UA_ServerConfig* config); + +#endif // OPCUA_ENABLED +#endif // OPCUA_AUTH_H diff --git a/resources/sources/Baremetal/opcua_log.cpp b/resources/sources/Baremetal/opcua_log.cpp new file mode 100644 index 000000000..1c3424eb3 --- /dev/null +++ b/resources/sources/Baremetal/opcua_log.cpp @@ -0,0 +1,142 @@ +/* +opcua_log.cpp - telnet debug log sink +Copyright (C) 2026 Autonomy Logic +*/ + +#include "opcua_log.h" + +#if OPCUA_ENABLED && OPCUA_DEBUG_LOG + +#include +#include +#include + +#include "baremetal_net.h" // for the same concrete server/client types + +// lwIP's counters. Only meaningful on the lwIP-backed targets (the LOGO!); +// guarded so the file still builds on a shield/WiFi core that has no lwIP. +#if defined(BOARD_LOGO8) +#include "lwip/stats.h" +#include "lwip/memp.h" +#define OPCUA_HAVE_LWIP_STATS 1 +#else +#define OPCUA_HAVE_LWIP_STATS 0 +#endif + +namespace { + +// Port 23. Telnet clients send option negotiation on connect, which we simply +// ignore: this is a one-way log, so anything the client says is noise. +bm_server_impl_t g_log_server(23); +bm_client_impl_t g_log_client; +bool g_log_started = false; + +// Ring buffer, so lines produced before anyone attaches are not lost — the +// interesting ones happen during init, which is over long before a developer +// can connect. +// Large enough that a periodic census cannot push the interesting one-shot +// events (accept / drop / init failures) out before a developer attaches. +constexpr size_t kRing = 6144; +char g_ring[kRing]; +size_t g_head = 0; // write cursor +size_t g_len = 0; // valid bytes +bool g_flushed = false; + +void ring_put(const char* s, size_t n) +{ + for (size_t i = 0; i < n; i++) + { + g_ring[g_head] = s[i]; + g_head = (g_head + 1) % kRing; + if (g_len < kRing) + g_len++; + } +} + +} // namespace + +void opcua_log_begin(void) +{ + if (g_log_started) + return; + g_log_server.begin(); + g_log_started = true; +} + +void opcua_log_poll(void) +{ + if (!g_log_started) + return; + if (!g_log_client || !g_log_client.connected()) + { + bm_client_impl_t incoming = g_log_server.available(); + if (incoming) + { + g_log_client = incoming; + g_flushed = false; + } + } + if (g_log_client && g_log_client.connected() && !g_flushed) + { + // Replay the backlog once, oldest first. + const size_t start = (g_head + kRing - g_len) % kRing; + for (size_t i = 0; i < g_len; i++) + g_log_client.write((uint8_t)g_ring[(start + i) % kRing]); + g_flushed = true; + } + // Drain and discard anything the client sends (telnet negotiation). + while (g_log_client && g_log_client.available() > 0) + (void)g_log_client.read(); +} + +void opcua_log_netstats(const char* tag) +{ +#if OPCUA_HAVE_LWIP_STATS && MEMP_STATS && MEM_STATS + // `err` is the one that matters: it counts allocations lwIP REFUSED. + // A non-zero err on TCP_PCB is exhaustion, and exhaustion is what stops + // a listener from accepting while an already-open socket (Modbus) keeps + // working — exactly the asymmetry observed. + opcua_logf("[net:%s] heap used=%u max=%u avail=%u err=%u", tag, + (unsigned)lwip_stats.mem.used, (unsigned)lwip_stats.mem.max, + (unsigned)lwip_stats.mem.avail, (unsigned)lwip_stats.mem.err); + opcua_logf("[net:%s] tcp_pcb used=%u max=%u err=%u | listen used=%u err=%u", tag, + (unsigned)lwip_stats.memp[MEMP_TCP_PCB].used, + (unsigned)lwip_stats.memp[MEMP_TCP_PCB].max, + (unsigned)lwip_stats.memp[MEMP_TCP_PCB].err, + (unsigned)lwip_stats.memp[MEMP_TCP_PCB_LISTEN].used, + (unsigned)lwip_stats.memp[MEMP_TCP_PCB_LISTEN].err); + opcua_logf("[net:%s] seg used=%u err=%u | pbuf used=%u err=%u | pool used=%u err=%u", tag, + (unsigned)lwip_stats.memp[MEMP_TCP_SEG].used, + (unsigned)lwip_stats.memp[MEMP_TCP_SEG].err, + (unsigned)lwip_stats.memp[MEMP_PBUF].used, + (unsigned)lwip_stats.memp[MEMP_PBUF].err, + (unsigned)lwip_stats.memp[MEMP_PBUF_POOL].used, + (unsigned)lwip_stats.memp[MEMP_PBUF_POOL].err); +#else + (void)tag; +#endif +} + +void opcua_logf(const char* fmt, ...) +{ + char line[160]; + va_list ap; + va_start(ap, fmt); + int n = vsnprintf(line, sizeof(line) - 2, fmt, ap); + va_end(ap); + if (n < 0) + return; + if ((size_t)n > sizeof(line) - 3) + n = (int)sizeof(line) - 3; + line[n++] = '\r'; + line[n++] = '\n'; + + ring_put(line, (size_t)n); + + // Non-blocking: if the peer is not draining, the line stays in the ring + // and the scan cycle is untouched. + if (g_log_client && g_log_client.connected() && g_flushed) + g_log_client.write((const uint8_t*)line, (size_t)n); +} + +#endif // OPCUA_ENABLED && OPCUA_DEBUG_LOG diff --git a/resources/sources/Baremetal/opcua_log.h b/resources/sources/Baremetal/opcua_log.h new file mode 100644 index 000000000..72de0ab11 --- /dev/null +++ b/resources/sources/Baremetal/opcua_log.h @@ -0,0 +1,52 @@ +/* +opcua_log.h - telnet debug log for OPC-UA bring-up +Copyright (C) 2026 Autonomy Logic + +A line-oriented log served on TCP port 23, so a developer can `telnet + 23` and watch what the OPC-UA server is doing. The LOGO! has no +accessible serial port and no display worth logging to, which leaves the +network as the only channel — and without one, diagnosing a protocol failure +on-device is guesswork. + +Gated behind OPCUA_DEBUG_LOG and compiled out by default: it costs flash, it +holds a socket, and it prints internals no production device should publish. +*/ + +#ifndef OPCUA_LOG_H +#define OPCUA_LOG_H + +#include "opcua_config.h" + +#ifndef OPCUA_DEBUG_LOG +#define OPCUA_DEBUG_LOG 0 +#endif + +#if OPCUA_ENABLED && OPCUA_DEBUG_LOG + +void opcua_log_begin(void); +/** Service the log socket. Cheap; call it from the scan loop. */ +void opcua_log_poll(void); +/** printf-style. Lines are dropped, never blocking, when nobody is attached — + * a debug channel that can stall the scan cycle is worse than no channel. */ +void opcua_logf(const char* fmt, ...); + +/** Dump lwIP's own pool/heap counters. + * + * The question "why did the listener die under load" is not answerable from + * our side of the stack: the sockets are gone but Modbus still serves, which + * points below us. lwIP keeps the numbers already (LWIP_STATS defaults on, + * MEMP_STATS/MEM_STATS derive to 1) — they just have to be read out. */ +void opcua_log_netstats(const char* tag); + +#define OPCUA_LOG(...) opcua_logf(__VA_ARGS__) + +#else + +#define OPCUA_LOG(...) do { } while (0) +static inline void opcua_log_netstats(const char* tag) { (void)tag; } +static inline void opcua_log_begin(void) { } +static inline void opcua_log_poll(void) { } + +#endif + +#endif // OPCUA_LOG_H diff --git a/resources/sources/Baremetal/opcua_nodes.cpp b/resources/sources/Baremetal/opcua_nodes.cpp new file mode 100644 index 000000000..aefd90864 --- /dev/null +++ b/resources/sources/Baremetal/opcua_nodes.cpp @@ -0,0 +1,496 @@ +/* +opcua_nodes.cpp - the address space and the data plane +Copyright (C) 2026 Autonomy Logic + +Turns the generated OPCUA_NODES[] table into open62541 variable nodes whose +values come straight from the PLC, with no copy in between. Every node is a data +source: a read calls openplc_debug_read(arr, elem, ...) against the table the +compiler emitted for the debugger, so there is no shadow copy and no mirroring +loop at scan rate. +*/ + +#include "opcua_config.h" + +#if OPCUA_ENABLED + +#include + +#include +#include + +#include "opcua_nodes.h" +#include "opcua_log.h" +#include "opcua_types.h" + +// The debug table, reached through the extern "C" shims rather than by including +// debug_dispatch.hpp -- the same route modbus_debug.cpp takes. This TU uses the +// core's default C++ standard while the strucpp runtime needs gnu++17 and lives +// in a precompiled archive, so including its templates here is an ABI break. +#include "arduino_runtime_glue.h" + +namespace { + +/** TypeTag -> UA_DataType index. + * + * Indexed by the tag stored in each OPCUA_NODES[] row, an ABI with + * generate-opcua-header.ts and opcua_types.py. Keep all three in step: a + * mismatch hands the encoder the wrong byte width. + * + * TIME / DATE / TOD / DT have no OPC-UA scalar of the same width, so they are + * exposed as the integers they already are on the wire. + * + * STRING is a UA String. WSTRING is a UA ByteString carrying UTF-16LE code + * units: transcoding to UTF-8 would need a scratch buffer the size of the + * string and would stop the value being served in place, so the client is given + * the bytes and the encoding is documented on the node's description. + * + * This table and the generator's `TYPE_TAGS` must stay the same length. Every + * index here is guarded by `tag >= kTagCount`, so an out-of-range tag is not a + * memory hazard; what it is instead is INVISIBLE -- `opcua_nodes_materialise` + * skips the row and the variable is simply missing from the address space with + * nothing said. The generator holds the other end up by refusing to emit a tag + * it has no mapping for, turning that silence into a build warning naming the + * variable. Widen one end and the other must move with it. */ +const UA_UInt32 kTagToUaType[] = { + UA_TYPES_BOOLEAN, // TAG_BOOL + UA_TYPES_SBYTE, // TAG_SINT + UA_TYPES_BYTE, // TAG_USINT + UA_TYPES_INT16, // TAG_INT + UA_TYPES_UINT16, // TAG_UINT + UA_TYPES_INT32, // TAG_DINT + UA_TYPES_UINT32, // TAG_UDINT + UA_TYPES_INT64, // TAG_LINT + UA_TYPES_UINT64, // TAG_ULINT + UA_TYPES_FLOAT, // TAG_REAL + UA_TYPES_DOUBLE, // TAG_LREAL + UA_TYPES_BYTE, // TAG_BYTE + UA_TYPES_UINT16, // TAG_WORD + UA_TYPES_UINT32, // TAG_DWORD + UA_TYPES_UINT64, // TAG_LWORD + UA_TYPES_INT64, // TAG_TIME (IEC duration, 100 ns-agnostic integer) + UA_TYPES_INT64, // TAG_DATE + UA_TYPES_INT64, // TAG_TOD + UA_TYPES_INT64, // TAG_DT + UA_TYPES_STRING, // TAG_STRING + UA_TYPES_BYTESTRING, // TAG_WSTRING (UTF-16LE code units, not UTF-8) +}; +constexpr uint8_t kTagCount = sizeof(kTagToUaType) / sizeof(kTagToUaType[0]); + +/** TypeTag values whose UA type is a {length, data} header rather than a scalar. + * Kept as an explicit check on the tag, not a comparison against `kTagCount`, + * so adding a further scalar type after them cannot quietly turn them back into + * scalars. */ +inline bool is_string_tag(uint8_t tag) +{ + return tag == OPCUA_TAG_STRING || tag == OPCUA_TAG_WSTRING; +} + +/** Headers for string values being returned by the read in progress. + * + * A UA String and a UA ByteString are the same {length, data} struct, so one + * pool serves both. The variant points at the header, the header points at live + * PLC storage, and neither is copied -- so the header has to outlive the + * callback exactly as the characters do. + * + * Sized to the largest batch the server will accept, because `Service_Read` + * fills every `UA_DataValue` in a request before encoding any of them: with + * fewer slots, two strings in one request would both end up pointing at + * whichever was read last. Round-robin rather than per-request reset so the + * pool needs no hook into the service's lifecycle; correctness only needs + * OPCUA_MAX_NODES_PER_READ distinct slots to be live at once. + * + * Cheap: 8 bytes a slot on a 32-bit target, so 20 slots is 160 bytes of .bss + * against the arena allocation per value that this removes. */ +UA_String g_string_headers[OPCUA_MAX_NODES_PER_READ]; +uint8_t g_string_header_next = 0; + +UA_String* next_string_header() +{ + UA_String* hdr = &g_string_headers[g_string_header_next]; + g_string_header_next = (uint8_t)((g_string_header_next + 1) % OPCUA_MAX_NODES_PER_READ); + return hdr; +} + +/** The row a node's callbacks belong to. open62541 hands back the nodeContext + * we registered, so the callbacks stay free of any lookup. */ +const opcua_node_t* row_from_context(void* nodeContext) +{ + return static_cast(nodeContext); +} + +UA_StatusCode read_node(UA_Server* server, const UA_NodeId* sessionId, void* sessionContext, + const UA_NodeId* nodeId, void* nodeContext, + UA_Boolean includeSourceTimeStamp, const UA_NumericRange* range, + UA_DataValue* value) +{ + (void)server; (void)sessionId; (void)sessionContext; (void)nodeId; + // IndexRange on a scalar is meaningless; refusing is what the spec asks for. + if (range != nullptr) + return UA_STATUSCODE_BADINDEXRANGEINVALID; + + const opcua_node_t* row = row_from_context(nodeContext); + if (row == nullptr || row->tag >= kTagCount) + return UA_STATUSCODE_BADINTERNALERROR; + + // Address the value in place instead of copying it out. `setScalarCopy` + // allocated from the ~19 KB arena on every value of every read; this makes a + // read allocation-free, which is what lets strings be served at all -- a + // 253-byte WSTRING would not have fitted the old `uint8_t buf[8]`. + uint16_t len = 0; + const void* src = openplc_debug_ptr(row->arr, row->elem, &len); + // A null pointer means the coordinates are out of bounds. A ZERO LENGTH does + // not: an empty STRING is a perfectly good value, and rejecting it here made + // every unset string read back as BadNoData. + if (src == nullptr) + return UA_STATUSCODE_BADNODATA; + + // SAFETY: `src` points into live PLC storage and stays valid only until this + // callback yields to the scan. That holds here because `scheduler()` is a + // cooperative single-threaded super-loop: OPC-UA is serviced in the tail of + // the cycle and the PLC program cannot run underneath it, so the value + // cannot move between here and the encoder. IF OPC-UA EVER GETS ITS OWN + // TASK OR THREAD, THIS MUST GO BACK TO COPYING. The same reasoning is why + // strucpp does not export `handle_ptr` to Runtime v4, where the scan does + // run in its own thread. + const void* payload = src; + if (is_string_tag(row->tag)) + { + // A UA String/ByteString is a {length, data} header, and the variant + // points at the HEADER, so the header must outlive this call too. The + // Read service fills every result before encoding any of them, so one + // static header would make every string in a batch alias the last one: + // hence a slot per node the server will accept in one request. + UA_String* hdr = next_string_header(); + hdr->length = len; + hdr->data = (UA_Byte*)src; // not copied, not freed -- see NODELETE + payload = hdr; + } + + UA_Variant_setScalar(&value->value, (void*)payload, &UA_TYPES[kTagToUaType[row->tag]]); + // Nothing here is owned by the variant: neither the value, nor a string's + // header, nor its characters. Without NODELETE the server would free flash + // or live PLC storage on cleanup. + value->value.storageType = UA_VARIANT_DATA_NODELETE; + value->hasValue = true; + if (includeSourceTimeStamp) + { + // The value was read from the PLC just now, so "now" is honest, even + // though the wall clock is a build epoch plus uptime on a part with no RTC. + value->sourceTimestamp = UA_DateTime_now(); + value->hasSourceTimestamp = true; + } + return UA_STATUSCODE_GOOD; +} + +UA_StatusCode write_node(UA_Server* server, const UA_NodeId* sessionId, void* sessionContext, + const UA_NodeId* nodeId, void* nodeContext, + const UA_NumericRange* range, const UA_DataValue* value) +{ + (void)server; (void)sessionId; (void)sessionContext; (void)nodeId; + if (range != nullptr) + return UA_STATUSCODE_BADINDEXRANGEINVALID; + + const opcua_node_t* row = row_from_context(nodeContext); + if (row == nullptr || row->tag >= kTagCount) + return UA_STATUSCODE_BADINTERNALERROR; + if (value == nullptr || !value->hasValue || value->value.data == nullptr) + { + OPCUA_LOG("[ua] write %s: no value", row->browse_name); + return UA_STATUSCODE_BADTYPEMISMATCH; + } + + // Insist on the exact type: coercing a near-miss would let a client writing + // an Int32 to a BOOL silently set something. + const UA_DataType* want = &UA_TYPES[kTagToUaType[row->tag]]; + if (value->value.type != want) + { + OPCUA_LOG("[ua] write %s: type mismatch", row->browse_name); + return UA_STATUSCODE_BADTYPEMISMATCH; + } + + const uint16_t width = openplc_debug_size(row->arr, row->elem); + if (width == 0) + return UA_STATUSCODE_BADNOTWRITABLE; + + uint8_t status; + if (is_string_tag(row->tag)) + { + // The write path wants strucpp's wire form -- one length byte in CODE + // UNITS followed by the payload -- which is not what the client sent, so + // this is the one place a copy is unavoidable. Small and on the stack: + // the cap is 126 code units, 253 bytes for a WSTRING. + const UA_String* in = static_cast(value->value.data); + const bool wide = (row->tag == OPCUA_TAG_WSTRING); + // A WSTRING arrives as UTF-16LE bytes, so an odd length is not a short + // string, it is a malformed one. + if (wide && (in->length % 2) != 0) + return UA_STATUSCODE_BADTYPEMISMATCH; + + size_t units = wide ? in->length / 2 : in->length; + if (units > OPENPLC_DEBUG_STRING_CAP) + units = OPENPLC_DEBUG_STRING_CAP; // truncate rather than refuse + const size_t payload = wide ? units * 2 : units; + + uint8_t wire[1 + OPENPLC_DEBUG_STRING_CAP * 2]; + wire[0] = (uint8_t)units; + if (payload > 0 && in->data != nullptr) + memcpy(&wire[1], in->data, payload); + status = openplc_debug_write(row->arr, row->elem, wire, (uint16_t)(1 + payload)); + } + else + { + if (width > 8) + return UA_STATUSCODE_BADNOTWRITABLE; + status = openplc_debug_write( + row->arr, row->elem, static_cast(value->value.data), width); + } + OPCUA_LOG("[ua] write %s arr=%u elem=%u w=%u status=0x%02x", + row->browse_name, (unsigned)row->arr, (unsigned)row->elem, + (unsigned)width, (unsigned)status); + + // STATUS_OK is 0x7E, not zero -- the debugger's status codes are chosen so + // the editor's wire parsers can tell them apart. Comparing against 0 reports + // every successful write to the client as BadNotWritable. + return (status == OPENPLC_DEBUG_STATUS_OK) + ? UA_STATUSCODE_GOOD + : UA_STATUSCODE_BADNOTWRITABLE; +} + +/** Any-role writability. + * + * The per-role bitmap in each row is the real access-control answer, but + * enforcing it per session needs the authenticated role. Until then a node is + * advertised writable if any role may write it, so a read-only variable is + * never presented as writable. */ +bool any_role_may_write(uint8_t perms) +{ + return opcua_can_write(perms, OPCUA_ROLE_VIEWER) + || opcua_can_write(perms, OPCUA_ROLE_OPERATOR) + || opcua_can_write(perms, OPCUA_ROLE_ENGINEER); +} + +} // namespace + +/* --------------------------------------------------------------------------- + * Materialisation for the flash nodestore. The address space is fixed at + * compile time, so the ziptree's per-node RAM (measured 476 B of arena per node) + * was storing something already `const`. These build a node on demand instead. + * ------------------------------------------------------------------------- */ + +namespace { + +/** Build this node's two references -- forward HasTypeDefinition to + * BaseDataVariableType, inverse Organizes from the Objects folder. + * + * They are identical for every node, but one shared static is a trap: + * open62541 grows a node's reference array with UA_realloc when a reference + * naming this node as target is added, and realloc on a shared static or on a + * pointer into flash is undefined behaviour. Each materialised node therefore + * gets its own allocation, freed on release. */ +UA_NodeId g_id_basedatavariabletype = UA_NODEID_NUMERIC(0, UA_NS0ID_BASEDATAVARIABLETYPE); +UA_NodeId g_id_objectsfolder = UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER); + +bool build_refs(UA_NodeHead* h, const char* name) +{ + UA_NodeReferenceKind* kinds = + (UA_NodeReferenceKind*)UA_calloc(2, sizeof(UA_NodeReferenceKind)); + // One allocation PER KIND, not one shared array carved in two. open62541 + // may append to a kind's target array with UA_realloc, and realloc is only + // defined on the start of a block -- handing kinds[1] an interior pointer + // into a shared allocation was undefined behaviour waiting on whether the + // SDK happened to take that path. It does take it: opcua_nodes_populate() + // asks the server to add the inverse Organizes reference, and only the + // duplicate rejection stops the append today. + UA_ReferenceTarget* type_target = + (UA_ReferenceTarget*)UA_calloc(1, sizeof(UA_ReferenceTarget)); + UA_ReferenceTarget* organizes_target = + (UA_ReferenceTarget*)UA_calloc(1, sizeof(UA_ReferenceTarget)); + UA_LocalizedTextListEntry* dn = + (UA_LocalizedTextListEntry*)UA_calloc(1, sizeof(UA_LocalizedTextListEntry)); + if (kinds == nullptr || type_target == nullptr || + organizes_target == nullptr || dn == nullptr) + { + UA_free(kinds); UA_free(type_target); UA_free(organizes_target); UA_free(dn); + return false; + } + + // The text points into flash; only the list cell is allocated. + dn->next = nullptr; + dn->localizedText.locale = UA_STRING_NULL; + dn->localizedText.text = UA_STRING((char*)name); + h->displayName = dn; + + // The two target ids are namespace-zero constants shared by every node. + // Safe where sharing the reference ARRAY is not: open62541 grows the array + // with UA_realloc, but never writes through a target id. + type_target->targetId = UA_NodePointer_fromNodeId(&g_id_basedatavariabletype); + type_target->targetNameHash = 0; + organizes_target->targetId = UA_NodePointer_fromNodeId(&g_id_objectsfolder); + organizes_target->targetNameHash = 0; + + kinds[0].targets.array = type_target; + kinds[0].targetsSize = 1; + kinds[0].hasRefTree = false; + kinds[0].referenceTypeIndex = UA_REFERENCETYPEINDEX_HASTYPEDEFINITION; + kinds[0].isInverse = false; + + kinds[1].targets.array = organizes_target; + kinds[1].targetsSize = 1; + kinds[1].hasRefTree = false; + kinds[1].referenceTypeIndex = UA_REFERENCETYPEINDEX_ORGANIZES; + kinds[1].isInverse = true; + + h->references = kinds; + h->referencesSize = 2; + return true; +} + +} // namespace + +UA_UInt16 opcua_nodes_count(void) +{ + return (UA_UInt16)OPCUA_NODE_COUNT; +} + +UA_UInt16 opcua_nodes_id_at(UA_UInt16 index) +{ +#if OPCUA_NODE_COUNT > 0 + if (index < OPCUA_NODE_COUNT) + return OPCUA_NODES[index].node_id; +#else + (void)index; +#endif + return 0; +} + +bool opcua_nodes_materialise(UA_UInt16 numeric_id, UA_UInt16 ns, UA_VariableNode* out) +{ +#if OPCUA_NODE_COUNT > 0 + const opcua_node_t* row = nullptr; + for (uint16_t i = 0; i < OPCUA_NODE_COUNT; i++) + { + if (OPCUA_NODES[i].node_id == numeric_id) + { + row = &OPCUA_NODES[i]; + break; + } + } + if (row == nullptr || row->tag >= kTagCount) + return false; + + memset(out, 0, sizeof(*out)); + + UA_NodeHead* h = &out->head; + h->nodeId = UA_NODEID_NUMERIC(ns, row->node_id); + h->nodeClass = UA_NODECLASS_VARIABLE; + // Names point into flash, so nothing may free them: deleteNode in the + // nodestore must never run over one of these. + h->browseName.namespaceIndex = ns; + h->browseName.name = UA_STRING((char*)row->browse_name); + // displayName is a singly-linked list of localised texts, not a scalar. One + // entry, allocated with the references so release frees them together. + h->displayName = nullptr; + if (!build_refs(h, row->browse_name)) + return false; + // Read-only attributes. The value is writable through the callback below + // when permissions allow; everything else is fixed at compile time, and a + // zero writeMask makes the server say so before it reaches the shared data. + h->writeMask = 0; + h->context = (void*)row; + + out->dataType = UA_TYPES[kTagToUaType[row->tag]].typeId; + out->valueRank = UA_VALUERANK_SCALAR; + out->accessLevel = UA_ACCESSLEVELMASK_READ; + if (any_role_may_write(row->perms)) + out->accessLevel |= UA_ACCESSLEVELMASK_WRITE; + + out->valueSourceType = UA_VALUESOURCETYPE_CALLBACK; + out->valueSource.callback.read = read_node; + out->valueSource.callback.write = write_node; + return true; +#else + (void)numeric_id; (void)ns; (void)out; + return false; +#endif +} + +void opcua_nodes_dematerialise(UA_VariableNode* node) +{ + if (node == nullptr || node->head.references == nullptr) + return; + // Free in the shape build_refs() allocated: one block per kind. Freeing + // only kinds[0] leaked the Organizes block whenever the SDK had grown it + // into a new allocation -- and "the materialised copy is discarded anyway" + // is a property of today's flash nodestore, not a contract to rely on. + // The per-target NodeIds are shared statics and must not be freed. + // + // Loop to referencesSize, not a hardcoded 2: build_refs() seeds two kinds, + // but UA_Server_addReference can APPEND a third (the same growth the alloc + // above accounts for), and freeing only the first two would leak it and its + // target array on every materialise -- which the ~19 KB arena cannot spare. + UA_NodeReferenceKind* kinds = node->head.references; + for (size_t i = 0; i < node->head.referencesSize; i++) + { + if (!kinds[i].hasRefTree && kinds[i].targets.array != nullptr) + UA_free(kinds[i].targets.array); + } + UA_free(kinds); + UA_free(node->head.displayName); + node->head.displayName = nullptr; + node->head.references = nullptr; + node->head.referencesSize = 0; +} + +UA_StatusCode opcua_nodes_populate(UA_Server* server, UA_UInt16* out_ns_index) +{ + UA_UInt16 ns = UA_Server_addNamespace(server, OPCUA_NAMESPACE_URI); + if (out_ns_index != nullptr) + *out_ns_index = ns; + + // Swap the default nodestore for the flash-backed one now that the namespace + // index is known. The nodestore was installed before the server existed, so + // namespace zero is already built into the inner store and carried over + // untouched; all that is left is naming our own namespace. + extern UA_Nodestore* opcua_server_nodestore(); + UA_Nodestore* flash = opcua_server_nodestore(); + if (flash == nullptr) + return UA_STATUSCODE_BADINTERNALERROR; + UA_Nodestore_flashSetNamespace(flash, ns); + +#if OPCUA_NODE_COUNT > 0 + // The nodes themselves are already in flash and need no adding, but the + // Objects folder needs a forward reference to each or a Browse of Objects + // will not find them. That is 8 B per node in the inner store, against the + // 476 B the zip-tree charged to hold the node itself. + for (uint16_t i = 0; i < OPCUA_NODE_COUNT; i++) + { + const opcua_node_t* row = &OPCUA_NODES[i]; + if (row->tag >= kTagCount) + continue; // unexposable type; the generator should have dropped it + + const UA_StatusCode rc = UA_Server_addReference( + server, + UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER), + UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), + UA_EXPANDEDNODEID_NUMERIC(ns, row->node_id), + true); + // The matching inverse reference is already part of every flash node, so + // the server trying to add it again is expected and harmless: the edit + // lands on the materialised copy and is discarded on release. + if (rc != UA_STATUSCODE_GOOD && rc != UA_STATUSCODE_BADDUPLICATEREFERENCENOTALLOWED) + { + OPCUA_LOG("[ns] addReference failed for node %u rc=0x%08lx", + (unsigned)row->node_id, (unsigned long)rc); + return rc; + } + } +#endif + { + uint16_t ovUsed = 0; uint32_t ovRef = 0; + UA_Arduino_getNs0OverlayStats(&ovUsed, &ovRef); + OPCUA_LOG("[ns] ns0 overlay: used=%u refused=%lu", (unsigned)ovUsed, (unsigned long)ovRef); + } + return UA_STATUSCODE_GOOD; +} + +#endif // OPCUA_ENABLED diff --git a/resources/sources/Baremetal/opcua_nodes.h b/resources/sources/Baremetal/opcua_nodes.h new file mode 100644 index 000000000..371d9e385 --- /dev/null +++ b/resources/sources/Baremetal/opcua_nodes.h @@ -0,0 +1,42 @@ +/* +opcua_nodes.h - address-space construction +Copyright (C) 2026 Autonomy Logic +*/ + +#ifndef OPCUA_NODES_H +#define OPCUA_NODES_H + +#include "opcua_config.h" + +#if OPCUA_ENABLED + +#include + +/** Register a namespace and add every row of OPCUA_NODES[] to it as a + * data-source variable. Returns the first failure, because an address space + * that is missing nodes is worse than one that failed to build: the client + * would see a plausible but incomplete tree. */ +UA_StatusCode opcua_nodes_populate(UA_Server* server, UA_UInt16* out_ns_index); + +/** How many nodes the project declared. Compile-time constant; the address + * space never changes at runtime, which is the whole premise of the flash + * nodestore. */ +UA_UInt16 opcua_nodes_count(void); + +/** The numeric NodeId of the `index`-th declared node, for iteration. */ +UA_UInt16 opcua_nodes_id_at(UA_UInt16 index); + +/** Fill `out` with the node whose numeric id is `numeric_id`, or return false if + * no such node was declared. + * + * Everything constant lives in flash and is pointed at rather than copied, so + * only the fixed-size `UA_VariableNode` shell is written. The caller owns `out` + * and must never let open62541 free its contents. */ +bool opcua_nodes_materialise(UA_UInt16 numeric_id, UA_UInt16 ns, UA_VariableNode* out); + +/** Release what opcua_nodes_materialise() allocated (the reference arrays). + * Safe to call twice and on a zeroed node. */ +void opcua_nodes_dematerialise(UA_VariableNode* node); + +#endif // OPCUA_ENABLED +#endif // OPCUA_NODES_H diff --git a/resources/sources/Baremetal/opcua_server.cpp b/resources/sources/Baremetal/opcua_server.cpp new file mode 100644 index 000000000..239ddcb9a --- /dev/null +++ b/resources/sources/Baremetal/opcua_server.cpp @@ -0,0 +1,434 @@ +/* +opcua_server.cpp - baremetal OPC-UA server +Copyright (C) 2026 Autonomy Logic + +STATUS: skeleton. The address space, network seam and scan-loop integration are +in place on every target; the open62541 core is not wired in yet. Until then +opcuatask() accepts and politely closes connections. + +Values are never cached: a read goes straight to strucpp::debug::handle_read() +against the compiler's table, with OPCUA_NODES[] carrying the coordinates. +OPCUA_NODES[] is const in flash and nodes are materialised into a small fixed +pool on demand. All dynamic allocation goes through one static arena. +*/ + +#include "opcua_server.h" + +#if OPCUA_ENABLED + +#include +#include +#include + + +#include "opcua_log.h" +#include "baremetal_net.h" +#include "opcua_auth.h" +#include "opcua_nodes.h" +#include "opcua_types.h" + +// The generated header instantiates OPCUA_NODES[] / OPCUA_USERS[] against the +// records in opcua_types.h, so it must come after it. +#include "opcua_config.h" + +/** The longest the server may go unserviced, from the project's OPC-UA screen + * (`cycleTimeMs`). Fallback only matters for a hand-written config.h. */ +#ifndef OPCUA_SYNC_INTERVAL_MS +#define OPCUA_SYNC_INTERVAL_MS 100u +#endif + +/** Admission threshold: with less slack than this left in the cycle, the server + * is not run at all. Carries margin over the measured worst case, which is + * session establishment. */ +#ifndef OPCUA_WORST_CASE_US +#define OPCUA_WORST_CASE_US 6000u +#endif + +#ifndef OPCUA_SCAN_BUDGET_US +#define OPCUA_SCAN_BUDGET_US 1000u +#endif + +/** Bytes carried from the socket into open62541 per read. Not the protocol's + * 8192 floor -- that is advertised through tcpBufSize below. open62541 + * accumulates a multi-read message into its own SecureChannel buffer. */ +#ifndef OPCUA_RECV_BUFFER +#define OPCUA_RECV_BUFFER 1024u +#endif + +/** Max chunk length, both directions. Advertised in the Ack, and the size of the + * buffer allocated for every response. + * + * 8192 is the Part 6 6.7.1 floor and is not adjustable: open62541 enforces it + * in ua_securechannel.c, so a smaller value returns ERR 0x80020000 to a + * conformant Hello rather than producing a smaller server. */ +#ifndef OPCUA_CHUNK_SIZE +#define OPCUA_CHUNK_SIZE 8192u +#endif +#ifndef OPCUA_SEND_BUFFER +#define OPCUA_SEND_BUFFER 2048u +#endif + +// Namespace zero is served from the library's const flash table, always. That +// needs a library built UA_NS0=NONE, which ships the table and expects an +// external nodestore to provide ns0; a MINIMAL build instead constructs ns0 in +// RAM (~19 KB of arena) and ships no table, so the two are not interchangeable +// and the failure is silent -- an empty address space, or a server that starts +// and browses nothing. +// +// This was a toggle while the flash path was being brought up. It is not one +// any more: there is no configuration in which building ns0 into RAM on a part +// with this much arena pressure is the right answer. The library installs from +// a git URL with no pinned ref, so the assumption is asserted loudly rather +// than defaulted quietly. +#if defined(UA_NAMESPACE_ZERO_MINIMAL) +#error "OPC-UA on baremetal needs open62541 built with UA_NS0=NONE: a MINIMAL library builds namespace zero in RAM and ships no flash table for the nodestore to serve." +#endif + +namespace { + +/** The server's heap, sized by OPCUA_ARENA_SIZE from the project's OPC-UA + * screen. Static at file scope, so an over-budget project fails to link rather + * than exhausting at runtime. */ +__attribute__((used)) alignas(8) uint8_t g_opcua_arena[OPCUA_ARENA_SIZE]; + +/** Our listening socket. The library opens none: Arduino's `Server` base class + * has no portable accept. Owning it here also lets OPC-UA and S7Comm share one + * slot pool. */ +bm_net::Listener g_listener(OPCUA_PORT, BM_NET_OPCUA_SLOTS); + +/** The flash nodestore, so populate() can tell it our namespace index. */ +UA_Nodestore* g_nodestore = nullptr; + +bool g_started = false; +uint32_t g_overruns = 0; +/* Worst and total time spent inside UA_Server_run_iterate; the overrun count + * alone cannot answer "by how much". */ +uint32_t g_max_us = 0; +uint32_t g_calls = 0; +/* Scans with too little slack to run at all. Not a fault, but it means OPC-UA is + * being starved by a scan interval too tight for the two to coexist. */ +uint32_t g_skipped = 0; +/* Iterations that ran because the sync interval came due rather than because + * there was slack. */ +uint32_t g_forced = 0; +unsigned long g_next_due_ms = 0; +uint64_t g_total_us = 0; +UA_Server* g_server = nullptr; + +/** Apply everything the VPP declared, then check it. + * + * `UA_ServerConfig_setMinimalCustomBuffer` ignores its `sendBufferSize` + * argument outright, and the shipped defaults (64 KB buffers, 512 MB max + * message, 16k chunks, 100 sessions) would blow the arena, so anything that did + * not take effect is a hard failure here. */ +bool apply_and_verify_limits(UA_ServerConfig* config) +{ + // `tcpBufSize` is the max chunk length in BOTH directions -- open62541 + // exposes one value, not a pair. 8192 is the protocol floor (Part 6 6.7.1) + // and also the ceiling we want: every response allocates one of these. + config->tcpBufSize = OPCUA_CHUNK_SIZE; + + // Bound the receive-assembly path. Both of these default to 0, meaning + // unbounded, so a client could drive the arena to exhaustion; one chunk per + // message turns that into a clean Bad_TcpMessageTooLarge. + config->tcpMaxMsgSize = 8192; + config->tcpMaxChunks = 1; + + config->maxSessions = OPCUA_MAX_SESSIONS; + + // SecureChannels are not sessions. A session costs two 8 KB buffers, but a + // closed SecureChannel lingers until housekeeping reaps it, so allowing + // exactly as many channels as sessions refuses the next client while the + // previous one is torn down. Headroom here costs bytes, not buffers. + config->maxSecureChannels = OPCUA_MAX_SESSIONS + 3; + + // OperationLimits. Published under ServerCapabilities so conformant clients + // split their own requests, and enforced so the rest get + // Bad_TooManyOperations instead of a scan-cycle overrun. + config->maxNodesPerRead = OPCUA_MAX_NODES_PER_READ; + config->maxNodesPerWrite = OPCUA_MAX_NODES_PER_WRITE; + config->maxNodesPerBrowse = OPCUA_MAX_NODES_PER_BROWSE; + config->maxReferencesPerNode = OPCUA_MAX_REFERENCES_PER_NODE; + + return config->tcpBufSize == OPCUA_CHUNK_SIZE + && config->tcpMaxMsgSize == 8192 + && config->tcpMaxChunks == 1 + && config->maxSessions == OPCUA_MAX_SESSIONS + && config->maxSecureChannels == OPCUA_MAX_SESSIONS + 3 + && config->maxNodesPerRead == OPCUA_MAX_NODES_PER_READ; +} + +} // namespace + +uint32_t opcua_overrun_count() +{ + return g_overruns; +} + +/** The flash nodestore, for opcua_nodes_populate() to bind our namespace to. + * A function rather than a shared global so the storage stays in one TU. */ +UA_Nodestore* opcua_server_nodestore() +{ + return g_nodestore; +} + +void opcua_init() +{ + if (g_started) + return; + + // Hand the library its heap. The arena lives here, in generated-project + // scope, because its size comes from the project's OPC-UA settings and + // arduino-cli does not put the sketch include path on library compilation. + // Passing the buffer is also what keeps it in .bss under --gc-sections. + UA_Arduino_setArena(g_opcua_arena, sizeof(g_opcua_arena)); + + // Size the transport from the same settings, for the same reason. + UA_Arduino_configureTcp(BM_NET_OPCUA_SLOTS, OPCUA_RECV_BUFFER); + + // The two things Arduino's abstract `Client` cannot answer: whether a write + // would block, and when a client slot may return to the shared pool. + UA_Arduino_setCanSendCallback( + [](Client* c, size_t n, void*) { return bm_net::can_send(c, n); }, nullptr); + UA_Arduino_setClosedCallback( + [](Client* c, void*) { bm_net::release(c); }, nullptr); + + if (!g_listener.begin()) + { + OPCUA_LOG("[ua] listener begin FAILED on port %d", (int)OPCUA_PORT); + return; + } + + OPCUA_LOG("[ua] arena %lu bytes, allocator bound", + (unsigned long)sizeof(g_opcua_arena)); + // Build the config before the server: UA_Server_new() would construct + // namespace zero on the way out, so a nodestore installed afterwards arrives + // too late to serve it. + static UA_ServerConfig bootConfig; + memset(&bootConfig, 0, sizeof(bootConfig)); + + // The minimal config installs the EventLoop and the TCP ConnectionManager + // through the factories the library supplies (the _POSIX-named forwarders). + if (UA_ServerConfig_setMinimalCustomBuffer(&bootConfig, OPCUA_PORT, nullptr, + OPCUA_CHUNK_SIZE, OPCUA_CHUNK_SIZE) + != UA_STATUSCODE_GOOD) + { + OPCUA_LOG("[ua] setMinimalCustomBuffer FAILED"); + return; + } + + // Namespace index 0 here means "not assigned yet": our own index is only + // known once UA_Server_addNamespace() has returned it, so + // opcua_nodes_populate() calls UA_Nodestore_flashSetNamespace() later. + UA_Arduino_FlashNodeSource src; + memset(&src, 0, sizeof(src)); + src.materialise = [](UA_UInt16 nsIdx, UA_UInt32 numericId, + UA_VariableNode* out, void*) -> bool { + return opcua_nodes_materialise((UA_UInt16)numericId, nsIdx, out); + }; + src.dematerialise = [](UA_VariableNode* node, void*) { + opcua_nodes_dematerialise(node); + }; + src.count = [](void*) -> UA_UInt16 { return opcua_nodes_count(); }; + src.idAt = [](UA_UInt16 index, void*) -> UA_UInt32 { + return (UA_UInt32)opcua_nodes_id_at(index); + }; + src.namespaceIndex = 0; + src.context = nullptr; + + // Drop the default ziptree unconditionally: with namespace zero served from + // flash it would hold nothing while costing 2,640 bytes of arena. It is the + // `inner` store the flash nodestore would have chained to for ns0, and + // there is nothing left for it to answer. + UA_Nodestore* inner = bootConfig.nodestore; + if (inner != nullptr && inner->free != nullptr) + { + inner->free(inner); + } + inner = nullptr; + UA_Nodestore* flash = UA_Nodestore_newFlash(&src, inner, + bootConfig.logging, + OPCUA_NODE_POOL_SLOTS, + true); + if (flash == nullptr) + { + OPCUA_LOG("[ua] flash nodestore FAILED"); + return; + } + bootConfig.nodestore = flash; + g_nodestore = flash; + + g_server = UA_Server_newWithConfig(&bootConfig); + if (g_server == nullptr) + { + UA_Arduino_ArenaStats st; UA_Arduino_getArenaStats(&st); + OPCUA_LOG("[ua] UA_Server_newWithConfig FAILED hw=%lu fail=%lu largest=%lu", + (unsigned long)st.highWater, (unsigned long)st.failures, + (unsigned long)st.largestFree); + return; + } + { + UA_Arduino_ArenaStats st; UA_Arduino_getArenaStats(&st); + OPCUA_LOG("[ua] server ok inuse=%lu hw=%lu", (unsigned long)st.inUse, + (unsigned long)st.highWater); + } + // From here on the SERVER's config is the live one: + // UA_Server_newWithConfig() copies the config in and memsets the caller's + // copy to zero, so continuing to use the local one configures a zeroed struct. + UA_ServerConfig* config = UA_Server_getConfig(g_server); + OPCUA_LOG("[ua] config set"); + + if (!apply_and_verify_limits(config)) + { + // A limit that did not stick means the arena budget is not what the VPP + // declared, so refuse to start. + UA_Server_delete(g_server); + g_server = nullptr; + return; + } + + OPCUA_LOG("[ua] limits ok buf=%lu maxmsg=%lu chunks=%lu sessions=%u channels=%u", + (unsigned long)config->tcpBufSize, (unsigned long)config->tcpMaxMsgSize, + (unsigned long)config->tcpMaxChunks, (unsigned)config->maxSessions, + (unsigned)config->maxSecureChannels); + + // Before run_startup: the endpoints advertise which user-token policies the + // server accepts, and they are built during startup. + if (opcua_auth_install(config) != UA_STATUSCODE_GOOD) + { + OPCUA_LOG("[auth] access control install FAILED"); + UA_Server_delete(g_server); + g_server = nullptr; + return; + } + + if (opcua_nodes_populate(g_server, nullptr) != UA_STATUSCODE_GOOD) + { + UA_Server_delete(g_server); + g_server = nullptr; + return; + } + + { + UA_Arduino_ArenaStats st; UA_Arduino_getArenaStats(&st); + OPCUA_LOG("[ua] nodes added (%d) inuse=%lu hw=%lu", (int)OPCUA_NODE_COUNT, + (unsigned long)st.inUse, (unsigned long)st.highWater); + } + + UA_StatusCode startRc = UA_Server_run_startup(g_server); + if (startRc != UA_STATUSCODE_GOOD) + { + UA_Server_delete(g_server); + g_server = nullptr; + return; + } + + { + UA_Arduino_ArenaStats st; UA_Arduino_getArenaStats(&st); + OPCUA_LOG("[ua] run_startup rc=0x%08lx inuse=%lu hw=%lu largest=%lu", + (unsigned long)startRc, (unsigned long)st.inUse, + (unsigned long)st.highWater, (unsigned long)st.largestFree); + } + g_started = true; + OPCUA_LOG("[ua] LISTENING on %d", (int)OPCUA_PORT); +} + +void opcuatask(uint32_t slack_us) +{ + // Before the g_started guard, deliberately: the debug log is most needed + // exactly when init failed. + opcua_log_poll(); + + // Periodic net/arena census, the only way to see a slow leak: a one-shot + // dump after a failure cannot distinguish gradual exhaustion from sudden. + { + static unsigned long s_next = 0; + const unsigned long now_ms = millis(); + if ((long)(now_ms - s_next) >= 0) + { + s_next = now_ms + 15000; + opcua_log_netstats("tick"); + UA_Arduino_ArenaStats st; UA_Arduino_getArenaStats(&st); + OPCUA_LOG("[arena] inuse=%lu hw=%lu fail=%lu largest=%lu", + (unsigned long)st.inUse, (unsigned long)st.highWater, + (unsigned long)st.failures, (unsigned long)st.largestFree); + OPCUA_LOG("[scan] budget=%luus overruns=%lu max=%luus avg=%luus calls=%lu", + (unsigned long)OPCUA_SCAN_BUDGET_US, (unsigned long)g_overruns, + (unsigned long)g_max_us, + (unsigned long)(g_calls ? (g_total_us / g_calls) : 0), + (unsigned long)g_calls); + OPCUA_LOG("[scan] skipped=%lu forced=%lu sync=%lums", + (unsigned long)g_skipped, (unsigned long)g_forced, + (unsigned long)OPCUA_SYNC_INTERVAL_MS); + } + } + + if (!g_started) + return; + + // Guaranteed service plus opportunistic service, the same shape Modbus has. + // A pure slack gate starves the server forever on a tight scan interval, so + // slack only decides whether to run EARLY: once OPCUA_SYNC_INTERVAL_MS has + // elapsed the server runs regardless and an overrun is reported. + const unsigned long now_ms = millis(); + const bool due = (long)(now_ms - g_next_due_ms) >= 0; + if (!due && slack_us < OPCUA_WORST_CASE_US) + { + g_skipped++; + return; // not due yet, and no room to get ahead + } + g_next_due_ms = now_ms + OPCUA_SYNC_INTERVAL_MS; + if (due) + g_forced++; + + const unsigned long deadline = micros() + OPCUA_SCAN_BUDGET_US; + + // Non-blocking by construction: our EventLoop's run() ignores the timeout, + // because sleeping here would stop the PLC logic. One iterate per scan. + // Accept before iterating: we own the listening socket and the library only + // ever receives connected clients. + if (g_server != nullptr) + { + Client* incoming = g_listener.accept(); + if (incoming != nullptr && + UA_Arduino_acceptClient(incoming) != UA_STATUSCODE_GOOD) + { + // Server full. Closing now makes the client retry, whereas holding + // it consumes a slot for nothing. + bm_net::release(incoming); + } + } + + const unsigned long t0 = micros(); + if (g_server != nullptr) + UA_Server_run_iterate(g_server, 0); + const unsigned long t1 = micros(); + const uint32_t spent = (uint32_t)(t1 - t0); + // Catch a pathological iteration in the act: a 20 ms cycle cannot absorb + // anything near this, and the raw endpoints distinguish real work from a + // micros() discontinuity. + if (spent > 50000u) + OPCUA_LOG("[scan] SPIKE %luus t0=%lu t1=%lu arena_inuse=%lu", + (unsigned long)spent, (unsigned long)t0, (unsigned long)t1, + (unsigned long)({ UA_Arduino_ArenaStats _s; UA_Arduino_getArenaStats(&_s); _s.inUse; })); + if (spent > g_max_us) + g_max_us = spent; + g_total_us += spent; + g_calls++; + + // Signed comparison so the wrap of micros() (every ~71 minutes) reads as a + // small negative rather than recording a spurious overrun once an hour. + if ((long)(micros() - deadline) > 0) + g_overruns++; +} + +#else // !OPCUA_ENABLED + +// Empty translation unit on targets without an OPC-UA server. The facade is +// still defined so Baremetal.ino needs no #ifdef around the call site. +void opcua_init() {} +void opcuatask(uint32_t) {} +uint32_t opcua_overrun_count() { return 0; } + + +#endif // OPCUA_ENABLED diff --git a/resources/sources/Baremetal/opcua_server.h b/resources/sources/Baremetal/opcua_server.h new file mode 100644 index 000000000..9bf58f36e --- /dev/null +++ b/resources/sources/Baremetal/opcua_server.h @@ -0,0 +1,41 @@ +/* +opcua_server.h - umbrella + scan-loop facade for the baremetal OPC-UA server +Copyright (C) 2026 Autonomy Logic + +`Baremetal.ino` includes this and calls `opcuatask()` once per scan, the same +shape as `ModbusSlave.h` / `mbtask()`. Everything below is compiled out when +the target's VPP does not declare `opcuaServer`, so this header is safe to +include unconditionally. +*/ + +#ifndef OPCUA_SERVER_H +#define OPCUA_SERVER_H + +#include +#include + +#include "opcua_config.h" + +/** Bring the server up. Safe to call when OPC-UA is disabled (no-op). + * Call AFTER the network layer is configured — see baremetal_net.h. */ +void opcua_init(); + +/** Service the server for at most `OPCUA_SCAN_BUDGET_US` microseconds, returning + * with work still pending rather than stretching the scan cycle. Pending work + * is picked up next scan. */ +/** Service the OPC-UA server for at most one event-loop iteration. + * + * `slack_us` is how much of the current scan cycle is still unspent; the server + * runs only if that exceeds its worst-case iteration cost. + * + * This is admission control, not a time-box: `UA_Server_run_iterate()` is not + * preemptible, so a budget checked after the call can report an overrun but + * never prevent one. Deciding before the call is the only thing that bounds it. */ +void opcuatask(uint32_t slack_us); + +/** Scans in which opcuatask() hit its time budget and returned early. Exposed + * rather than silently counted, because the symptom is otherwise just a + * slightly longer cycle. */ +uint32_t opcua_overrun_count(); + +#endif // OPCUA_SERVER_H diff --git a/resources/sources/Baremetal/openplc_retain.h b/resources/sources/Baremetal/openplc_retain.h new file mode 100644 index 000000000..f97d41995 --- /dev/null +++ b/resources/sources/Baremetal/openplc_retain.h @@ -0,0 +1,164 @@ +/* +openplc_retain.h - Retain-variable storage interface (NODE-94) +Copyright (C) 2026 OpenPLC - Thiago Alves + +The one point of contact for persisting retained variables. The runtime +MARSHALS; the platform STORES. Nothing here knows what a retained variable is: +it moves an opaque blob, and the runtime is what turns IEC variables into those +bytes and back (strucpp's iec_retain.hpp). + +The split is the point. Retention hardware has nothing in common between +targets — battery-backed SRAM, FRAM, an EEPROM with a 100k-cycle budget, an +NVS partition, a file on a data partition — so the runtime does not try to have +an opinion. It hands over the current values once per scan cycle and asks for +them once at start. What that costs, how often it is really committed, and what +wear it implies are decisions only the platform can make. + +IDENTICAL, DELIBERATELY, TO THE runtime-v4 SURFACE. The same three function +names, the same status codes, the same contract text describe the plugin hooks +on the Linux daemon, and the two runtimes call them at the same points in the +PLC lifecycle. A vendor writing retain support reads one page and writes the +same shape twice, rather than learning two interfaces for one job. + +THE THREE CALLS, AND WHEN THEY HAPPEN + + start openplc_retain_read() once, before the first scan + scan openplc_retain_write() every cycle, WHILE RUNNING ONLY + stop openplc_retain_flush() once, on the transition into STOP + +WRITE IS THE DURABILITY PATH; FLUSH IS ONLY A HINT. This matters enough to say +before anything else, because getting it backwards produces a driver that looks +correct and protects nothing. Retention exists for the power cut nobody +schedules, and a power cut does not call flush(). A driver that commits solely +in flush() therefore loses everything in exactly the case it was written for. +Decide durability in write(); treat flush() as "if you are holding anything, +now is a good moment". + +A board with no backend links and behaves exactly as it did before this file +existed: the weak defaults in openplc_retain_weak.cpp answer UNSUPPORTED, +retain silently degrades to NON_RETAIN, and every variable starts at its +declared initial value. A VPP that ships a real backend defines the STRONG +symbols and overrides them at link time — the same mechanism license_store.h +already uses. +*/ + +#ifndef OPENPLC_RETAIN_H +#define OPENPLC_RETAIN_H + +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/* Length of the program identity handed to openplc_retain_read(). + * + * An MD5 rendered as lower-case hex: exactly 32 characters, and NOT guaranteed + * to be NUL-terminated. Compare with memcmp over this length, never strcmp. */ +#define OPLC_RETAIN_PROGRAM_ID_LEN 32 + +typedef enum { + // Operation completed. For a read: a blob was returned in `out`. + OPLC_RETAIN_OK = 0, + // Nothing stored — virgin storage, or discarded because the program + // changed. A first boot looks like this, and it is not an error: every + // retained variable simply keeps its declared initial value. + OPLC_RETAIN_NO_DATA = 1, + // No backend on this platform. THE DEFAULT. Retain degrades to + // NON_RETAIN, which is what the board did before it had this interface. + OPLC_RETAIN_UNSUPPORTED = 2, + // The backend failed (flash write error, NVS commit failure, …). + OPLC_RETAIN_IO_ERROR = 3, + // Blob larger than the backend can hold, or larger than the caller's + // buffer on a read. Answer this from write() rather than expecting the + // runtime to ask a capacity question first — only the driver knows what + // its medium can take, and one that compresses or spills knows it better + // than any number it could publish up front. + OPLC_RETAIN_TOO_LARGE = 4, +} openplc_retain_status_t; + +/* Load the stored blob for THIS program into `out` (capacity `cap`), writing + * the length to `out_len`. + * + * Called once at program start, after the IEC variables are constructed and + * before the first scan — and again on the transition into RUN and after a + * program re-initialisation, since that re-runs every declared initialiser and + * would otherwise turn a STOP into a cold start. It must therefore be safe to + * call more than once; a second call on an unchanged program is expected to + * hand back the same bytes. + * + * `program_md5` is this program's identity, OPLC_RETAIN_PROGRAM_ID_LEN + * characters, possibly not NUL-terminated (see the macro above). + * + * THE DRIVER DECIDES WHETHER THE STORED BYTES STILL BELONG TO THIS PROGRAM. + * That decision lives here, and not in the runtime, because it is inseparable + * from how the driver stores things: + * + * - identity matches, or nothing has been stored yet → behave as a plain + * read: OK with the blob, or NO_DATA when the store is empty; + * - identity differs from what is stored → THE STORED VALUES BELONG TO A + * PROGRAM THAT IS NO LONGER RUNNING. Discard them, log one line saying + * storage was cleared, and answer NO_DATA. Every retained variable then + * starts at its declared initial value, which is what a new program means. + * + * DO NOT PERSIST THE NEW IDENTITY HERE. Keep it and commit it alongside the + * blob on the next openplc_retain_write(), so a read never mutates storage and + * the identity is only ever written together with the bytes it describes. If + * the PLC never reaches RUN, nothing is stored and the next boot simply reaches + * the same conclusion again — idempotent, with nothing lost. + * + * Return OPLC_RETAIN_NO_DATA or OPLC_RETAIN_UNSUPPORTED to leave every + * retained variable at its initial value. The runtime validates what it does + * get (magic, format, layout hash, crc32) and refuses a blob it cannot trust, + * so a backend does not need to guard against a torn write on its own — though + * one that can detect it should say IO_ERROR rather than hand over rubble. + * + * UNSUPPORTED HERE SWITCHES RETENTION OFF FOR THE RUN. The runtime stops + * marshalling after it, so a board with no backend does not pay to pack a blob + * every cycle that nothing will store. */ +openplc_retain_status_t openplc_retain_read(const char *program_md5, uint16_t md5_len, + uint8_t *out, uint16_t cap, uint16_t *out_len); + +/* Store `len` bytes. + * + * CALLED ONCE PER SCAN CYCLE, unconditionally, while the PLC is RUNNING. The + * runtime does not diff, does not rate-limit and does not decide when a value + * is worth keeping: it delivers the current bytes every cycle and the decision + * of what to do with them is yours. + * + * That means a driver over slow storage MUST NOT write through on every call. + * Hold the bytes and commit on your own schedule — every ten seconds, on a + * value change, on a shutdown signal — whatever the medium can sustain. An + * EEPROM rated for 100k cycles would be consumed in under an hour by a 20 ms + * scan writing through. Comparing against what is already stored, and skipping + * the commit when nothing moved, belongs here too: the runtime cannot know what + * a write costs on your board, so it does not try to guess. + * + * ALSO COMMITS THE PROGRAM IDENTITY held from the last openplc_retain_read(), + * so the stored blob and the identity of the program that produced it are + * written as one unit. + * + * MUST RETURN PROMPTLY AND MUST NOT BLOCK. This runs inside the scan cycle, so + * time spent here is time the PLC is not scanning; a slow implementation shows + * up as a scan overrun. Same contract as hardwareStateSwitch(). */ +openplc_retain_status_t openplc_retain_write(const uint8_t *blob, uint16_t len); + +/* Commit anything still held, now. + * + * Called once on the transition into STOP, after the last scan and before the + * program is re-initialised. A HINT, NOT THE DURABILITY MECHANISM — see the + * warning at the top of this file. Its only job is to make a clean stop + * lossless for a driver that buffers: a store that already commits inside + * write() has nothing to do here and should simply answer OK. + * + * Must not block for long, and must leave the store readable: the PLC can be + * started again without the board rebooting, and the next + * openplc_retain_read() has to see what this committed. */ +openplc_retain_status_t openplc_retain_flush(void); + +#ifdef __cplusplus +} +#endif + +#endif // OPENPLC_RETAIN_H diff --git a/resources/sources/Baremetal/openplc_retain_weak.cpp b/resources/sources/Baremetal/openplc_retain_weak.cpp new file mode 100644 index 000000000..bedbe24a9 --- /dev/null +++ b/resources/sources/Baremetal/openplc_retain_weak.cpp @@ -0,0 +1,40 @@ +/* +openplc_retain_weak.cpp - Weak fallback backend for retain storage (NODE-94) +Copyright (C) 2026 OpenPLC - Thiago Alves + +Guarantees the firmware always links even when no platform provides retain +storage. A VPP that ships a real backend defines the STRONG symbols, which +override these at link time. When absent, these run and report UNSUPPORTED, so +a board with no retention degrades to exactly what it did before the interface +existed: every retained variable starts at its declared initial value, which is +IEC's NON_RETAIN. + +Same mechanism, and the same reasoning, as license_store_weak.cpp. +*/ +#include "openplc_retain.h" + +__attribute__((weak)) openplc_retain_status_t openplc_retain_read(const char *, uint16_t, + uint8_t *, uint16_t, + uint16_t *out_len) +{ + // Zero the length even on the unsupported path: a caller that ignores the + // status and reads `out_len` would otherwise act on an uninitialised + // count, which is the kind of thing that surfaces once, in the field, as + // a restore from bytes nobody wrote. + if (out_len) *out_len = 0; + return OPLC_RETAIN_UNSUPPORTED; +} + +__attribute__((weak)) openplc_retain_status_t openplc_retain_write(const uint8_t *, uint16_t) +{ + return OPLC_RETAIN_UNSUPPORTED; +} + +__attribute__((weak)) openplc_retain_status_t openplc_retain_flush(void) +{ + // OK rather than UNSUPPORTED: "commit anything you are holding" is + // satisfied by a backend that holds nothing. The runtime does not act on + // the result, and reporting failure here would put a misleading line in + // the log of every board without retention, on every stop. + return OPLC_RETAIN_OK; +} diff --git a/resources/sources/Baremetal/s7comm_server.cpp b/resources/sources/Baremetal/s7comm_server.cpp new file mode 100644 index 000000000..cc65ef20a --- /dev/null +++ b/resources/sources/Baremetal/s7comm_server.cpp @@ -0,0 +1,608 @@ +/* +s7comm_server.cpp - Siemens S7Comm server for the baremetal runtime +Copyright (C) 2026 Autonomy Logic + +S7 over ISO-TCP (RFC 1006), TCP port 102. The Settimino S7Server library owns the +protocol engine; this file owns the sockets, per-connection state, scan-cycle +scheduling and the bridge from S7 areas to located variables. Classic S7 has no +authentication or encryption. +*/ + +#include "s7comm_server.h" + +#if S7COMM_ENABLED + +#include +#include + +#include + +#include "baremetal_net.h" +#include "opcua_log.h" // shared debug transport +#include "s7comm_types.h" +#include "arduino_runtime_glue.h" +#include "openplc.h" // located-variable buffers: bool_input[][], int_memory[], ... +// Tunables the generated config may override. +// --------------------------------------------------------------------------- +/** How often the server must run regardless of scan-cycle slack. */ +#ifndef S7COMM_SYNC_INTERVAL_MS +#define S7COMM_SYNC_INTERVAL_MS 100u +#endif + +/** Time one service pass may spend before it is counted as an overrun. */ +#ifndef S7COMM_SCAN_BUDGET_US +#define S7COMM_SCAN_BUDGET_US 3000u +#endif + +/** Slack required to admit a pass early; conservative until measured. */ +#ifndef S7COMM_WORST_CASE_US +#define S7COMM_WORST_CASE_US 1500u +#endif + +namespace { + +// Storage: all static and sized at compile time, so memory use does not depend +// on what a peer does. + +bm_net::Listener g_listener(S7COMM_PORT, BM_NET_S7_SLOTS); + +S7Server g_server; +bool g_started = false; + +/** The library's view of the address space, built once at init from S7COMM_AREAS[]. + * s7comm_area_t is the ABI with the code generator; S7SrvArea is the library's. */ +S7SrvArea g_lib_areas[S7COMM_AREA_COUNT]; + +/** One connection. rx accumulates a frame, tx holds the reply; both are sized + * from the negotiated PDU ceiling. */ +struct Conn +{ + Client* client; + S7SrvSession session; + uint16_t have; // bytes of a frame accumulated so far + uint8_t rx[S7ISO_HEADER_SIZE + S7COMM_PDU_SIZE]; + uint8_t tx[S7ISO_HEADER_SIZE + S7COMM_PDU_SIZE]; +}; + +Conn g_conns[S7COMM_MAX_CLIENTS]; + +/** Round-robin cursor, so a chatty client cannot starve a quiet one. */ +uint8_t g_cursor = 0; + +// Scheduling state +unsigned long g_next_due_ms = 0; + +// Counters. +uint32_t g_overruns = 0; +uint32_t g_max_us = 0; +uint32_t g_total_us = 0; +uint32_t g_calls = 0; +uint32_t g_skipped = 0; +uint32_t g_forced = 0; +uint32_t g_accepts = 0; +uint32_t g_refused = 0; + +// --------------------------------------------------------------------------- +// The address space. Flash-resident and fixed at build time; the generated +// s7comm_config.h defines S7COMM_AREAS[]. +// --------------------------------------------------------------------------- + +/** Find the area a request names. Linear: the table is a handful of entries. */ +const s7comm_area_t* find_area(uint8_t area, uint16_t dbNumber) +{ + for (uint8_t i = 0; i < S7COMM_AREA_COUNT; i++) + { + const s7comm_area_t* a = &S7COMM_AREAS[i]; + if (a->area != area) + continue; + if (area == S7COMM_AREA_DB && a->db_number != dbNumber) + continue; + return a; + } + return nullptr; +} + +// The bridge from S7 areas to the PLC's located variables. An S7 area is a flat +// run of bytes; located variables are arrays of pointers into the program's +// storage, so every access translates an S7 byte offset into slot + byte within +// slot and flips byte order (S7 is big-endian, the targets little-endian). An +// unbound variable is a NULL pointer: reads give 0, writes are dropped. + +/** Pointer to located slot `index` of `buffer`, or NULL if unbound or out of + * range. Ceilings come from openplc.h and differ per target. */ +static void* slot_ptr(uint8_t buffer, uint16_t index, uint8_t* width) +{ + switch (buffer) + { + case S7COMM_BUF_INT_INPUT: + *width = 2; + return (index < MAX_ANALOG_INPUT) ? (void*)int_input[index] : NULL; + case S7COMM_BUF_INT_OUTPUT: + *width = 2; + return (index < MAX_ANALOG_OUTPUT) ? (void*)int_output[index] : NULL; +#if defined(MAX_MEMORY_WORD) && MAX_MEMORY_WORD > 0 + case S7COMM_BUF_INT_MEMORY: + *width = 2; + return (index < MAX_MEMORY_WORD) ? (void*)int_memory[index] : NULL; +#endif +#if defined(MAX_MEMORY_DWORD) && MAX_MEMORY_DWORD > 0 + case S7COMM_BUF_DINT_MEMORY: + *width = 4; + return (index < MAX_MEMORY_DWORD) ? (void*)dint_memory[index] : NULL; +#endif +#if defined(MAX_MEMORY_LWORD) && MAX_MEMORY_LWORD > 0 + case S7COMM_BUF_LINT_MEMORY: + *width = 8; + return (index < MAX_MEMORY_LWORD) ? (void*)lint_memory[index] : NULL; +#endif + default: + *width = 0; + return NULL; + } +} + +/** One bit of a bit buffer, or NULL. */ +static IEC_BOOL* bit_ptr(uint8_t buffer, uint16_t byteIndex, uint8_t bitIndex) +{ + if (bitIndex > 7) + return NULL; + if (buffer == S7COMM_BUF_BOOL_INPUT) + return (byteIndex < (MAX_DIGITAL_INPUT / 8)) ? bool_input[byteIndex][bitIndex] : NULL; + if (buffer == S7COMM_BUF_BOOL_OUTPUT) + return (byteIndex < (MAX_DIGITAL_OUTPUT / 8)) ? bool_output[byteIndex][bitIndex] : NULL; + return NULL; +} + +/** Read a slot as a native 64-bit value, widening from its real width. */ +static uint64_t slot_read(void* p, uint8_t width) +{ + if (p == NULL) + return 0; + switch (width) + { + case 2: return *(const uint16_t*)p; + case 4: return *(const uint32_t*)p; + case 8: return *(const uint64_t*)p; + default: return 0; + } +} + +static void slot_write(void* p, uint8_t width, uint64_t value) +{ + if (p == NULL) + return; // unbound: dropped, see the note above + switch (width) + { + case 2: *(uint16_t*)p = (uint16_t)value; break; + case 4: *(uint32_t*)p = (uint32_t)value; break; + case 8: *(uint64_t*)p = value; break; + default: break; + } +} + +/** S7 read: `len` bytes from byte offset `start` within the area. */ +bool s7_read(void* ctx, uint8_t areaCode, uint16_t dbNumber, + uint32_t start, uint16_t len, uint8_t* dest) +{ + (void)ctx; + const s7comm_area_t* a = find_area(areaCode, dbNumber); + if (a == NULL || start + len > a->size_bytes) + return false; + + if (s7comm_is_bit_buffer(a->buffer)) + { + // One S7 byte is eight consecutive located bits, LSB first, which is + // what `%IX.` already means. + for (uint16_t i = 0; i < len; i++) + { + uint8_t packed = 0; + const uint16_t byteIndex = (uint16_t)(a->start_index + start + i); + for (uint8_t b = 0; b < 8; b++) + { + const IEC_BOOL* p = bit_ptr(a->buffer, byteIndex, b); + if (p != NULL && *p) + packed |= (uint8_t)(1u << b); + } + dest[i] = packed; + } + return true; + } + + uint8_t width = 0; + if (slot_ptr(a->buffer, 0, &width) == NULL && width == 0) + return false; // not a buffer this target has + + for (uint16_t i = 0; i < len; i++) + { + const uint32_t off = start + i; + const uint16_t slotIndex = (uint16_t)(a->start_index + off / width); + const uint8_t byteInSlot = (uint8_t)(off % width); + + uint8_t w = 0; + const uint64_t value = slot_read(slot_ptr(a->buffer, slotIndex, &w), width); + + // Big-endian extraction: byte 0 of a slot is its MOST significant. + dest[i] = (uint8_t)((value >> (8u * (width - 1u - byteInSlot))) & 0xFFu); + } + return true; +} + +/** S7 write: `len` bytes at byte offset `start` within the area. */ +bool s7_write(void* ctx, uint8_t areaCode, uint16_t dbNumber, + uint32_t start, uint16_t len, const uint8_t* src) +{ + (void)ctx; + const s7comm_area_t* a = find_area(areaCode, dbNumber); + if (a == NULL || start + len > a->size_bytes) + return false; + if (!a->writable) + return false; + + if (s7comm_is_bit_buffer(a->buffer)) + { + // A byte-wide write to a bit area sets all eight. + for (uint16_t i = 0; i < len; i++) + { + const uint16_t byteIndex = (uint16_t)(a->start_index + start + i); + for (uint8_t b = 0; b < 8; b++) + { + IEC_BOOL* p = bit_ptr(a->buffer, byteIndex, b); + if (p != NULL) + *p = (IEC_BOOL)((src[i] >> b) & 1u); + } + } + return true; + } + + uint8_t width = 0; + if (slot_ptr(a->buffer, 0, &width) == NULL && width == 0) + return false; + + for (uint16_t i = 0; i < len; i++) + { + const uint32_t off = start + i; + const uint16_t slotIndex = (uint16_t)(a->start_index + off / width); + const uint8_t byteInSlot = (uint8_t)(off % width); + + uint8_t w = 0; + void* p = slot_ptr(a->buffer, slotIndex, &w); + if (p == NULL) + continue; // unbound: dropped + + // Read-modify-write, because a client may write one byte of a word; the + // other byte of a WORD is the same variable, not a different output. + const uint8_t shift = (uint8_t)(8u * (width - 1u - byteInSlot)); + uint64_t value = slot_read(p, width); + value &= ~((uint64_t)0xFFu << shift); + value |= (uint64_t)src[i] << shift; + slot_write(p, width, value); + } + return true; +} + +// --------------------------------------------------------------------------- +// Identification and CPU control +// --------------------------------------------------------------------------- + +#if S7COMM_SZL_ENABLED + +/** What this CPU says it is when a client asks. + * + * Strings come from the project's S7 identity screen and live in flash. Many + * clients query the System Status List before doing anything else and refuse + * devices that will not answer, so this is a capability rather than always-on. + * The order code is an S7-315's, which clients recognise. */ +const S7SrvIdentity g_identity = { + S7COMM_ID_NAME, + S7COMM_ID_MODULE_TYPE, + "", // plant designation: not on the editor's screen + S7COMM_ID_COPYRIGHT, + S7COMM_ID_SERIAL, + S7COMM_ID_MODULE_NAME, + "6ES7 315-2EH14-0AB0", +}; + +/* No control handler is registered, deliberately — see s7comm_init(). + * + * Classic S7 carries no authentication of any kind, so binding run/stop to it + * means anyone who can reach port 102 can stop the machine. The Settimino fork + * already refuses control when no handler is set ("No handler means no ... The + * host opts in"), and this host does not opt in. + * + * Losing nothing that matters: SZL identity is what a client needs to talk to + * the server at all, and it stays. Run/stop remains available where it is + * gated — the Modbus debug channel on the editor's own unit id, and the + * device's physical mode switch. + */ + +/** Keep the published status in step with the runtime's own. Polled, because the + * PLC can stop for reasons no S7 client asked for. */ +void refresh_cpu_status(void) +{ + g_server.setCpuStatus(runtime_get_plc_state() == PLC_STATE_RUNNING + ? S7SRV_CPU_RUN + : S7SRV_CPU_STOP); +} + +#endif // S7COMM_SZL_ENABLED + +/** S7 single-bit write, so a bit write never re-asserts its seven neighbours -- + * on the output area those are seven other physical outputs. */ +bool s7_write_bit(void* ctx, uint8_t areaCode, uint16_t dbNumber, + uint32_t byteIndex, uint8_t bitIndex, bool value) +{ + (void)ctx; + const s7comm_area_t* a = find_area(areaCode, dbNumber); + if (a == NULL || byteIndex >= a->size_bytes) + return false; + if (!a->writable) + return false; + + if (s7comm_is_bit_buffer(a->buffer)) + { + IEC_BOOL* p = bit_ptr(a->buffer, (uint16_t)(a->start_index + byteIndex), bitIndex); + if (p != NULL) + *p = (IEC_BOOL)(value ? 1 : 0); + return true; + } + + // A bit inside a word area: read-modify-write of that word, since every bit + // of it belongs to the same variable. + uint8_t width = 0; + if (slot_ptr(a->buffer, 0, &width) == NULL && width == 0) + return false; + + const uint16_t slotIndex = (uint16_t)(a->start_index + byteIndex / width); + const uint8_t byteInSlot = (uint8_t)(byteIndex % width); + uint8_t w = 0; + void* p = slot_ptr(a->buffer, slotIndex, &w); + if (p == NULL) + return true; // unbound: dropped + + const uint8_t shift = (uint8_t)(8u * (width - 1u - byteInSlot) + bitIndex); + uint64_t v = slot_read(p, width); + if (value) v |= ((uint64_t)1u << shift); + else v &= ~((uint64_t)1u << shift); + slot_write(p, width, v); + return true; +} + +// --------------------------------------------------------------------------- +// Connection servicing +// --------------------------------------------------------------------------- + +void drop(Conn& c) +{ + if (c.client != nullptr) + { + bm_net::release(c.client); + c.client = nullptr; + } + c.have = 0; +} + +/** Pull whatever has arrived on one connection and answer at most one frame, so + * a pipelining client cannot burst inside a single scan cycle. */ +void service(Conn& c) +{ + if (c.client == nullptr) + return; + + if (!c.client->connected() && c.client->available() == 0) + { + drop(c); + return; + } + + // Take only what is already buffered; never wait for the rest, so a peer + // that sends half a frame cannot stall the scan. + while (c.client->available() > 0 && c.have < sizeof(c.rx)) + { + c.rx[c.have++] = (uint8_t)c.client->read(); + + const uint16_t need = S7IsoFrameLength(c.rx, c.have); + + if (need == 0xFFFF) + { + // Not ISO-TCP, and a TPKT stream has no framing marker to + // resynchronise to. + OPCUA_LOG("[s7] drop: not ISO-TCP"); + drop(c); + return; + } + + if (need != 0 && c.have >= need) + { + uint16_t txLen = 0; + const int r = g_server.handle(c.session, c.rx, need, + c.tx, sizeof(c.tx), &txLen); + c.have = 0; + + if (txLen != 0) + { + // Ask before writing: Energia's Client::write() spins on + // delay(1) until lwIP's send buffer drains, which is unbounded + // blocking on a remote peer's ACK inside a scan cycle. + if (bm_net::can_send(c.client, txLen)) + { + c.client->write(c.tx, txLen); + } + else + { + OPCUA_LOG("[s7] drop: send window %u short", (unsigned)txLen); + drop(c); + return; + } + } + + if (r == S7SRV_CLOSE) + drop(c); + + return; // one frame per pass + } + } + + if (c.have >= sizeof(c.rx)) + { + // A frame that claims to fit and then does not, meaning the negotiated + // PDU is smaller than what the peer sent. + OPCUA_LOG("[s7] drop: frame past our buffer"); + drop(c); + } +} + +void accept_new() +{ + Client* incoming = g_listener.accept(); + if (incoming == nullptr) + return; + + for (uint8_t i = 0; i < S7COMM_MAX_CLIENTS; i++) + { + if (g_conns[i].client == nullptr) + { + g_conns[i].client = incoming; + g_conns[i].have = 0; + g_server.beginSession(g_conns[i].session); + g_accepts++; + OPCUA_LOG("[s7] accepted -> conn %u", (unsigned)i); + return; + } + } + + // Close it rather than leaving it accepted-but-unserved: a clean close makes + // the client retry instead of waiting for its own timeout. + g_refused++; + OPCUA_LOG("[s7] refused (all %u connections busy)", (unsigned)S7COMM_MAX_CLIENTS); + bm_net::release(incoming); +} + +} // namespace + +// --------------------------------------------------------------------------- +void s7comm_init(void) +{ + for (uint8_t i = 0; i < S7COMM_MAX_CLIENTS; i++) + { + g_conns[i].client = nullptr; + g_conns[i].have = 0; + } + + // Every area is served by the accessors above rather than a flat buffer: the + // values live in the PLC program's storage, reached through the located + // variable pointer arrays, so there is no block of bytes to hand over. + for (uint8_t i = 0; i < S7COMM_AREA_COUNT; i++) + { + g_lib_areas[i].code = S7COMM_AREAS[i].area; + g_lib_areas[i].dbNumber = S7COMM_AREAS[i].db_number; + g_lib_areas[i].data = nullptr; + g_lib_areas[i].size = S7COMM_AREAS[i].size_bytes; + g_lib_areas[i].readOnly = (S7COMM_AREAS[i].writable == 0); + } + g_server.setAreas(g_lib_areas, S7COMM_AREA_COUNT); + g_server.setAccessors(s7_read, s7_write, nullptr); + g_server.setBitWriter(s7_write_bit); + g_server.setMaxPduSize(S7COMM_PDU_SIZE); + g_server.setWriteEnabled(S7COMM_WRITE_ENABLED != 0); + +#if S7COMM_SZL_ENABLED + // Identity and CPU status only. setControlHandler() is deliberately NOT + // called: SZL is what a client needs in order to talk, CPU control is a + // separate decision, and classic S7 authenticates nobody. Leaving the + // handler null makes the library refuse every start/stop request. + g_server.setIdentity(&g_identity); + refresh_cpu_status(); +#endif + + if (!g_listener.begin()) + { + OPCUA_LOG("[s7] listen FAILED on port %u", (unsigned)S7COMM_PORT); + return; + } + + g_started = true; + g_next_due_ms = millis(); + OPCUA_LOG("[s7] listening on %u pdu=%u clients=%u areas=%u write=%u", + (unsigned)S7COMM_PORT, (unsigned)S7COMM_PDU_SIZE, + (unsigned)S7COMM_MAX_CLIENTS, (unsigned)S7COMM_AREA_COUNT, + (unsigned)S7COMM_WRITE_ENABLED); +} + +// --------------------------------------------------------------------------- +void s7commtask(uint32_t slack_us) +{ + if (!g_started) + return; + + // Periodic census, the only way to see a slow leak on a device with no + // debugger attached. + { + static unsigned long s_next = 0; + const unsigned long now = millis(); + if ((long)(now - s_next) >= 0) + { + s_next = now + 15000; + OPCUA_LOG("[s7] frames=%lu rejected=%lu accepts=%lu refused=%lu", + (unsigned long)g_server.frames(), + (unsigned long)g_server.rejected(), + (unsigned long)g_accepts, (unsigned long)g_refused); + OPCUA_LOG("[s7] budget=%luus overruns=%lu max=%luus avg=%luus calls=%lu skipped=%lu forced=%lu", + (unsigned long)S7COMM_SCAN_BUDGET_US, (unsigned long)g_overruns, + (unsigned long)g_max_us, + (unsigned long)(g_calls ? (g_total_us / g_calls) : 0), + (unsigned long)g_calls, (unsigned long)g_skipped, + (unsigned long)g_forced); + } + } + + // Guaranteed service plus opportunistic service, the same shape Modbus and + // opcuatask() use. A pure slack gate starves the protocol forever on a tight + // scan interval, so slack only decides whether to run EARLY; once + // S7COMM_SYNC_INTERVAL_MS has elapsed the server runs regardless. Slack is + // recomputed between the two protocols so the second sees what the first left. + const unsigned long now_ms = millis(); + const bool due = (long)(now_ms - g_next_due_ms) >= 0; + if (!due && slack_us < S7COMM_WORST_CASE_US) + { + g_skipped++; + return; + } + g_next_due_ms = now_ms + S7COMM_SYNC_INTERVAL_MS; + if (due) + g_forced++; + + const unsigned long t0 = micros(); + +#if S7COMM_SZL_ENABLED + // Two integer reads, cheap enough to do every pass. Done here rather than in + // the SZL handler so the handler stays free of runtime dependencies. + refresh_cpu_status(); +#endif + + accept_new(); + + // Round-robin from where the last pass stopped. + for (uint8_t n = 0; n < S7COMM_MAX_CLIENTS; n++) + { + const uint8_t i = (uint8_t)((g_cursor + n) % S7COMM_MAX_CLIENTS); + service(g_conns[i]); + } + g_cursor = (uint8_t)((g_cursor + 1) % S7COMM_MAX_CLIENTS); + + const uint32_t spent = (uint32_t)(micros() - t0); + if (spent > g_max_us) + g_max_us = spent; + g_total_us += spent; + g_calls++; + if (spent > S7COMM_SCAN_BUDGET_US) + g_overruns++; +} + +#else // !S7COMM_ENABLED + +// No S7 server in this project. The entry points still exist so the scan loop +// needs no #ifdef; the linker drops them along with everything above. +void s7comm_init(void) {} +void s7commtask(uint32_t) {} + +#endif // S7COMM_ENABLED diff --git a/resources/sources/Baremetal/s7comm_server.h b/resources/sources/Baremetal/s7comm_server.h new file mode 100644 index 000000000..6b479c29a --- /dev/null +++ b/resources/sources/Baremetal/s7comm_server.h @@ -0,0 +1,36 @@ +/* +s7comm_server.h - the baremetal Siemens S7Comm server +Copyright (C) 2026 Autonomy Logic + +Two calls, matching opcua_server.h's shape because they live the same life: +one from setup(), one from the scan loop. + +Both compile to nothing when the project has no S7 server (S7COMM_ENABLED 0 in +the generated s7comm_config.h), so callers need no guard and a target that will +never run S7 pays nothing for it. +*/ + +#ifndef S7COMM_SERVER_H +#define S7COMM_SERVER_H + +#include + +#include "s7comm_config.h" + +/** Bring the server up: open port 102 and register the areas. + * + * Call AFTER the network layer is configured -- see baremetal_net.h. Safe to + * call when S7 is disabled; it does nothing. */ +void s7comm_init(void); + +/** Service the server for at most the slack it is given. + * + * `slack_us` is what remains of the current scan cycle. The server declines + * to start work it cannot finish inside that, EXCEPT once per sync interval, + * when it runs regardless -- see the scheduling comment in the .cpp for why a + * pure slack gate is a starvation bug and not a safety measure. + * + * Never blocks on a peer. */ +void s7commtask(uint32_t slack_us); + +#endif // S7COMM_SERVER_H diff --git a/resources/sources/Baremetal/udp_scan.h b/resources/sources/Baremetal/udp_scan.h new file mode 100644 index 000000000..f77d9d05e --- /dev/null +++ b/resources/sources/Baremetal/udp_scan.h @@ -0,0 +1,110 @@ +/* + * udp_scan.h -- network-discovery ("Search") responder for baremetal runtimes. + * + * The editor broadcasts "OPENPLC_DISCOVER_V1" to UDP :33333 and reads replies as + * JSON, taking the device IP from the UDP source address. We reply unicast with + * "mac" (so units sharing a default IP stay distinguishable) and "device". + * + * Feature-gated, not board-gated: compiled in only when the build defines + * SUPPORTS_UDP_SCAN. Uses only the generic Arduino UDP + Ethernet API. + * + * A VPP declares its identity by defining OPLC_DEVICE_NAME in its HAL, a strong + * symbol overriding the weak default. Header-only. + */ +#ifndef UDP_SCAN_H +#define UDP_SCAN_H + +/* Longest device name the discovery reply can carry. + * + * reply[] is 192 bytes; the fixed JSON is 126 with the MAC rendered, and the + * name appears TWICE (hostname and device), so the two copies share the + * remaining 66 -- 33 each, one byte of which is the terminator. */ +#define UDP_SCAN_NAME_MAX 32 + +#include +#include +#include +#include +#include +#include + +#define UDP_SCAN_PORT 33333 +#define UDP_SCAN_MAGIC "OPENPLC_DISCOVER_V1" /* 19 bytes, no NUL on the wire */ + +/* Optional per-VPP brand/type string. The runtime provides a weak NULL default + * (see runtime_glue below); a VPP HAL defines a strong symbol to override it. */ +#ifdef __cplusplus +extern "C" { +#endif +extern const char *OPLC_DEVICE_NAME; +#ifdef __cplusplus +} +#endif + +static EthernetUDP _udp_scan; +static bool _udp_scan_ready = false; + +static inline void udp_scan_begin(void) +{ + if (_udp_scan_ready) return; + if (_udp_scan.begin(UDP_SCAN_PORT)) _udp_scan_ready = true; +} + +static inline void udp_scan_poll(void) +{ + if (!_udp_scan_ready) return; + int sz = _udp_scan.parsePacket(); + if (sz <= 0) return; + + uint8_t buf[40]; + int n = _udp_scan.read(buf, sizeof(buf)); + if (n < (int)(sizeof(UDP_SCAN_MAGIC) - 1)) return; + if (memcmp(buf, UDP_SCAN_MAGIC, sizeof(UDP_SCAN_MAGIC) - 1) != 0) return; + + IPAddress rip = _udp_scan.remoteIP(); + uint16_t rport = _udp_scan.remotePort(); + + uint8_t mac[6] = {0, 0, 0, 0, 0, 0}; + Ethernet.macAddress(mac); + + const char *dev = OPLC_DEVICE_NAME; + if (dev == 0 || dev[0] == 0) dev = "OpenPLC device"; + + /* Bound the NAME, not the frame. snprintf() returns the length it WOULD + * have written, so using it as the write length reads past reply[] as soon + * as the JSON does not fit -- and the name is interpolated twice, so the + * budget is halved. Truncating the frame instead would keep the read in + * bounds but put malformed JSON on the wire, which the editor's scanner + * drops: the device would simply stop appearing, for a reason nothing + * reports. Cropping the name keeps the reply well-formed at any length. */ + char devbuf[UDP_SCAN_NAME_MAX + 1]; + { + size_t i = 0; + while (i < UDP_SCAN_NAME_MAX && dev[i] != 0) { devbuf[i] = dev[i]; i++; } + devbuf[i] = 0; + dev = devbuf; + } + + /* Reply as an OpenPLC advertisement so the editor's existing scan lists us; + * the editor takes the device IP from our UDP source address. */ + char reply[192]; + int len = snprintf(reply, sizeof(reply), + "{\"service\":\"openplc-runtime\"," + "\"hostname\":\"%s\"," + "\"device\":\"%s\"," + "\"mac\":\"%02x:%02x:%02x:%02x:%02x:%02x\"," + "\"runtime_version\":\"baremetal\"," + "\"api_port\":502}", + dev, dev, + mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); + /* Belt and braces: the name is bounded above, so this cannot fire today. + * It is here so a later field added to the JSON cannot reintroduce the + * overread silently. */ + if (len <= 0 || (size_t)len >= sizeof(reply)) return; + + _udp_scan.beginPacket(rip, rport); + _udp_scan.write((const uint8_t *)reply, (size_t)len); + _udp_scan.endPacket(); +} + +#endif /* UDP_SCAN_H */ diff --git a/resources/sources/arduino/arduino_runtime_glue.cpp b/resources/sources/arduino/arduino_runtime_glue.cpp index 2967f9d45..c82009e62 100644 --- a/resources/sources/arduino/arduino_runtime_glue.cpp +++ b/resources/sources/arduino/arduino_runtime_glue.cpp @@ -18,6 +18,9 @@ #include "openplc.h" #include "generated.hpp" #include "debug_dispatch.hpp" +#include "iec_retain.hpp" +#include "openplc_retain.h" +#include "opcua_types.h" // Placement new, used by runtime_reinit_program() to re-run the program's // initializers over storage that already exists. Available on every target the @@ -76,6 +79,25 @@ extern "C" __attribute__((weak)) uint8_t hardwareStateSwitch(void) return PLC_SWITCH_RUN; } +// Weak default: a board with no resident firmware bootloader cannot honour the +// Modbus reboot-to-bootloader command (FC 0x4C), so this is a no-op. A HAL whose +// device has one provides a strong extern "C" override (see openplc.h). +extern "C" __attribute__((weak)) void hardwareRebootToBootloader(void) +{ +} + +// Weak defaults: a board with no programming lock is never locked, so FC 0x4C +// is never refused and the prompt is never needed. A HAL whose device has a +// lock (the LOGO! panel) provides strong extern "C" overrides -- see openplc.h. +extern "C" __attribute__((weak)) uint8_t hardwareProgrammingLocked(void) +{ + return 0; +} + +extern "C" __attribute__((weak)) void hardwarePromptUnlock(void) +{ +} + extern "C" uint8_t runtime_get_plc_state(void) { return plc_state; @@ -362,9 +384,177 @@ static void runtime_reinit_program() runtime_zero_output_image(); runtime_bind_located_vars(); // idempotent, allocation-free + // The placement-new above re-ran every declared initialiser, wiping the + // retained values with it. Restore them, or entering STOP would silently + // become a cold start — the transition users hit most often. + runtime_retain_load(); scan_counter = 0; } +// --------------------------------------------------------------------------- +// Retain variables. +// +// The runtime MARSHALS and the platform STORES. `strucpp::retain` turns the +// retained leaves into a blob and back; `openplc_retain_*` puts those bytes +// somewhere that survives power loss. Neither knows anything about the other's +// half, which is what lets one board keep values in FRAM and the next in an +// EEPROM it may only write every ten seconds. +// +// The buffer is a file-scope array, sized once at start. Not a stack local: it +// is written from the scan path, and a few hundred bytes of stack per cycle is +// not affordable on a 2 KB-SRAM part. Not malloc'd either — the firmware +// allocates nothing after setup. +// --------------------------------------------------------------------------- + +// Cap on the retain blob this firmware will handle. Sized for the boards the +// editor targets, and deliberately a fixed allocation: this buffer is filled +// from inside the scan cycle, so it cannot come from the heap. +#define RETAIN_BUFFER_MAX 512 + +// A program that outgrows the buffer FAILS THE BUILD. +// +// The editor emits OPLC_RETAIN_BLOB_SIZE into defines.h whenever a program +// retains anything, and the check has to happen here because there is nowhere +// else for it to happen: a microcontroller has no console to report on, so the +// alternative is firmware that links, runs, quietly decides the blob will not +// fit and behaves as NON_RETAIN — on a machine somebody has already installed, +// with the fault only visible after a power cycle. +// +// Retained state adds up faster than it looks. A retained TON is 36 bytes +// (four interface leaves plus the four internal ones that make it a timer), +// so this cap is reached at around fourteen of them. +#ifdef OPLC_RETAIN_BLOB_SIZE +static_assert(OPLC_RETAIN_BLOB_SIZE <= RETAIN_BUFFER_MAX, + "This program's retained variables need more storage than this " + "board's retain buffer holds (RETAIN_BUFFER_MAX). Retain fewer " + "variables, or mark some of them NON_RETAIN. Remember that a " + "retained function block instance retains all of its internal " + "state, not only its inputs and outputs."); +#endif + +static uint8_t retain_buffer[RETAIN_BUFFER_MAX]; +static uint16_t retain_blob_len = 0; // 0 = nothing retained, or unusable +static bool retain_available = false; + +// This program's identity, handed to the driver on every read so it can tell +// whether what it is holding belongs to the program now running. Supplied by +// the sketch from PROGRAM_MD5 rather than read from defines.h here: defines.h +// has no include guard and must reach a translation unit through exactly one +// path (modbus_config.h), which this file is deliberately not on. +static const char *retain_program_md5 = nullptr; + +static uint16_t retain_read_leaf(uint8_t arr, uint16_t elem, uint8_t* dest) { + return strucpp::debug::handle_read(arr, elem, dest); +} + +// A PLAIN write, never a force. Restoring a retained value must not pin it: the +// program has to be able to move it on the very next scan, and an operator's +// force has to stay authoritative over whatever was stored. +static uint8_t retain_write_leaf(uint8_t arr, uint16_t elem, const uint8_t* bytes, uint16_t len) { + return strucpp::debug::handle_write(arr, elem, bytes, len); +} + +static uint16_t retain_size_leaf(uint8_t arr, uint16_t elem) { + return strucpp::debug::handle_size(arr, elem); +} + +// --------------------------------------------------------------------------- +// Decide once, at start, what THIS RUNTIME can do about retention: does the +// program retain anything, and does the blob fit the buffer this firmware +// allocated for it. Both are facts about the runtime and the program, not about +// the board's storage — whether the platform can actually keep the bytes is the +// driver's answer, and it gives it by returning UNSUPPORTED from read(). +// --------------------------------------------------------------------------- +void runtime_retain_init(const char *program_md5) +{ + retain_available = false; + retain_blob_len = 0; + retain_program_md5 = program_md5; + + const size_t needed = strucpp::retain::blob_size(retain_size_leaf); + if (needed == 0) return; // the program retains nothing + // Unreachable when the editor supplied OPLC_RETAIN_BLOB_SIZE — the + // static_assert above already refused the build. Kept for firmware built + // by other means, where silently degrading still beats overrunning. + if (needed > RETAIN_BUFFER_MAX) return; + + retain_blob_len = (uint16_t)needed; + retain_available = true; +} + +// --------------------------------------------------------------------------- +// Restore. Call after the IEC variables exist and before the first scan — on +// the transition into RUN, and after any re-initialisation, because that +// re-runs every declared initialiser and would otherwise make a STOP behave as +// a cold start. Idempotent by design, so calling it at all three is fine. +// +// The driver is handed this program's identity and decides for itself whether +// what it holds still belongs here; a store it has just discarded answers +// NO_DATA, exactly like a store that never held anything. Anything the runtime +// cannot trust on top of that (bad magic, wrong format, failed crc, a layout +// from a different program) leaves every variable at its initial value. That is +// the correct outcome: a machine starting from its declared defaults is +// recoverable, one starting from plausible-looking garbage is not. +// +// UNSUPPORTED switches retention off for the rest of the run. A board with no +// backend should not pay to pack a blob 50 times a second that nothing stores, +// and the driver's own answer is the only honest way to learn that — the +// runtime no longer asks a capacity question up front. +// --------------------------------------------------------------------------- +void runtime_retain_load() +{ + if (!retain_available) return; + + uint16_t got = 0; + const openplc_retain_status_t rc = openplc_retain_read( + retain_program_md5, OPLC_RETAIN_PROGRAM_ID_LEN, retain_buffer, retain_blob_len, &got); + + if (rc == OPLC_RETAIN_UNSUPPORTED) { + retain_available = false; + return; + } + if (rc != OPLC_RETAIN_OK || got == 0) return; + + strucpp::retain::unpack(retain_buffer, got, retain_write_leaf, retain_size_leaf); +} + +// --------------------------------------------------------------------------- +// Save. Called once per scan cycle, unconditionally, WHILE RUNNING. +// +// No dirty check and no rate limit here on purpose: whether these bytes are +// worth committing, and how often, is the platform's decision, and it is the +// only layer that knows what its storage costs. See openplc_retain.h. +// +// Running only, so the two runtimes agree: on the Linux daemon a STOP unloads +// the program outright and there is no scan to save from, and a firmware that +// kept writing an unchanging blob while the machine sat stopped would spend a +// board's flash budget on nothing. +// --------------------------------------------------------------------------- +void runtime_retain_save() +{ + if (!retain_available) return; + + const size_t n = strucpp::retain::pack( + retain_buffer, sizeof(retain_buffer), retain_read_leaf, retain_size_leaf); + if (n == 0) return; + + openplc_retain_write(retain_buffer, (uint16_t)n); +} + +// --------------------------------------------------------------------------- +// Commit anything the driver is still holding. Called on the transition into +// STOP, after the last scan and before the program is re-initialised. +// +// A hint, not the durability mechanism — write() is what protects against a +// power cut, and a power cut does not call this. What it buys is that a CLEAN +// stop loses nothing on a driver that buffers. +// --------------------------------------------------------------------------- +void runtime_retain_flush() +{ + if (!retain_available) return; + openplc_retain_flush(); +} + // --------------------------------------------------------------------------- // Establish the initial state. Called once from setup(), after hardwareInit() // so the HAL's switch pin is already configured. @@ -401,9 +591,25 @@ void runtime_plc_cycle() // Entering STOP is a cold stop: zero the outputs and re-initialise the // program exactly once, on the transition. + // + // The flush goes FIRST, and the order is load-bearing: + // runtime_reinit_program() re-runs every declared initialiser, so a flush + // after it would ask the driver to commit the initial values over the ones + // the program actually stopped with. if (new_state == PLC_STATE_STOPPED && plc_state != PLC_STATE_STOPPED) { + runtime_retain_flush(); runtime_reinit_program(); } + + // Entering RUN restores the retained values, matching where the Linux + // daemon reloads them (it does it as part of loading the program). Nothing + // normally changes them while stopped, so this is usually a no-op — except + // in the one case that matters: a driver that discarded the store because + // the program changed. Idempotent, so calling it on every RUN edge is safe. + if (new_state == PLC_STATE_RUNNING && plc_state != PLC_STATE_RUNNING) { + runtime_retain_load(); + } + plc_state = new_state; // 2. Inputs, in both states. @@ -432,6 +638,21 @@ void runtime_plc_cycle() if (plc_state == PLC_STATE_RUNNING) { strucpp::__CURRENT_TIME_NS += (int64_t)base_tick_ns; } + + // 5. Hand the retained values to the platform. Every cycle while RUNNING — + // a value that changed in the last scan before power loss is exactly the + // one worth keeping. Whether this is actually committed to storage now is + // the driver's call; the default is a no-op. + // + // Not while stopped: the Linux daemon unloads the program on a STOP and + // has no scan to save from, so saving here would be the one place the two + // runtimes disagreed — and it would spend a board's flash budget + // rewriting an unchanging blob for as long as the machine sits idle. The + // values the program stopped with are already stored by the last RUNNING + // cycle, and the flush on the STOP transition commits them. + if (plc_state == PLC_STATE_RUNNING) { + runtime_retain_save(); + } } // --------------------------------------------------------------------------- @@ -465,3 +686,46 @@ extern "C" uint8_t openplc_debug_set(uint8_t arr, uint16_t elem, uint8_t forcing { return strucpp::debug::handle_set(arr, elem, forcing != 0, bytes, len); } + +extern "C" uint8_t openplc_debug_write(uint8_t arr, uint16_t elem, + const uint8_t* bytes, uint16_t len) +{ + return strucpp::debug::handle_write(arr, elem, bytes, len); +} + +extern "C" const void* openplc_debug_ptr(uint8_t arr, uint16_t elem, uint16_t* out_len) +{ + return strucpp::debug::handle_ptr(arr, elem, out_len); +} + +// The status macros in arduino_runtime_glue.h exist so the other side of the +// boundary never has to include debug_dispatch.hpp. This is the one place that +// sees both, so this is where they are held to each other. +static_assert(OPENPLC_DEBUG_STATUS_OK == strucpp::debug::STATUS_OK, + "OPENPLC_DEBUG_STATUS_OK drifted from strucpp::debug::STATUS_OK"); +static_assert(OPENPLC_DEBUG_STATUS_OUT_OF_BOUNDS == strucpp::debug::STATUS_OUT_OF_BOUNDS, + "OPENPLC_DEBUG_STATUS_OUT_OF_BOUNDS drifted from strucpp::debug::STATUS_OUT_OF_BOUNDS"); +static_assert(OPENPLC_DEBUG_STATUS_DATA_TOO_LARGE == strucpp::debug::STATUS_DATA_TOO_LARGE, + "OPENPLC_DEBUG_STATUS_DATA_TOO_LARGE drifted from strucpp::debug::STATUS_DATA_TOO_LARGE"); + +// Same reasoning for the string wire widths. `modbus_types.h` sizes the Modbus +// frame from them -- a frame that cannot hold the widest value skips it in +// silence, which is how a WSTRING read came back empty rather than failing -- +// and that header is plain C++ and cannot include debug_dispatch.hpp. This is +// again the one place that sees both. +static_assert(OPENPLC_DEBUG_STRING_WIRE == strucpp::debug::DEBUG_STRING_WIDTH, + "OPENPLC_DEBUG_STRING_WIRE drifted from strucpp::debug::DEBUG_STRING_WIDTH"); +// opcua_types.h names the two string tags for plain-C callers (the branch +// between "scalar" and "{length, data} header" is not a table lookup). This TU +// is the only place that sees both that header and strucpp's enum, so it is +// where the duplication is held honest. +static_assert(OPENPLC_DEBUG_STRING_CAP == strucpp::debug::DEBUG_STRING_CAP, + "OPENPLC_DEBUG_STRING_CAP disagrees with strucpp's DEBUG_STRING_CAP"); + +static_assert(OPCUA_TAG_STRING == strucpp::debug::TAG_STRING, + "OPCUA_TAG_STRING in opcua_types.h disagrees with strucpp's TypeTag"); +static_assert(OPCUA_TAG_WSTRING == strucpp::debug::TAG_WSTRING, + "OPCUA_TAG_WSTRING in opcua_types.h disagrees with strucpp's TypeTag"); + +static_assert(OPENPLC_DEBUG_WSTRING_WIRE == strucpp::debug::DEBUG_WSTRING_WIDTH, + "OPENPLC_DEBUG_WSTRING_WIRE drifted from strucpp::debug::DEBUG_WSTRING_WIDTH"); diff --git a/resources/sources/arduino/arduino_runtime_glue.h b/resources/sources/arduino/arduino_runtime_glue.h index 1aa1b59e4..842c61cf4 100644 --- a/resources/sources/arduino/arduino_runtime_glue.h +++ b/resources/sources/arduino/arduino_runtime_glue.h @@ -48,6 +48,36 @@ void runtime_init_plc_state(); // Per-cycle helpers (call once per scan cycle from scheduler()/loop()). void runtime_plc_cycle(); +// --------------------------------------------------------------------------- +// Retain variables. +// +// The runtime marshals; the platform stores (see Baremetal/openplc_retain.h). +// `runtime_plc_cycle()` already hands the current values over once per scan, +// so the sketch only has to bring the pair below up at start. +// --------------------------------------------------------------------------- + +// Decide once what this runtime can do about retention: does the program retain +// anything, and does its blob fit the buffer this firmware allocated. Call from +// setup() BEFORE runtime_retain_load(). +// +// `program_md5` is PROGRAM_MD5 from the generated defines.h — 32 hex characters +// identifying the program. It is passed in rather than read here because +// defines.h has no include guard and must reach a translation unit through +// exactly one path (modbus_config.h), which the glue is not on. The driver uses +// it to tell whether the values it holds belong to the program now running; see +// Baremetal/openplc_retain.h. +void runtime_retain_init(const char *program_md5); + +// Restore the stored values. Call from setup() after runtime_retain_init(). +// Also called internally on the transition into RUN and after a program +// re-initialisation, so a STOP does not behave as a cold start. Idempotent. +void runtime_retain_load(); + +// Ask the driver to commit anything it is still holding. Called internally on +// the transition into STOP. A hint, not the durability mechanism — that is the +// per-scan write. See Baremetal/openplc_retain.h. +void runtime_retain_flush(); + // --------------------------------------------------------------------------- // Run/stop control surface. // @@ -110,6 +140,60 @@ uint16_t openplc_debug_size(uint8_t arr, uint16_t elem); uint16_t openplc_debug_read(uint8_t arr, uint16_t elem, uint8_t* dest); uint8_t openplc_debug_set(uint8_t arr, uint16_t elem, uint8_t forcing, const uint8_t* bytes, uint16_t len); +// Write a value WITHOUT forcing it: the plain "set it now, the program may change +// it next scan" write an OPC-UA or fieldbus write means. openplc_debug_set() +// forces, and a forced variable is one the PLC program can never move again. +uint8_t openplc_debug_write(uint8_t arr, uint16_t elem, const uint8_t* bytes, uint16_t len); + +// Address a leaf's value IN PLACE instead of copying it out. Returns a pointer +// into live PLC storage and writes the value's CURRENT length (not its padded +// wire width) to *out_len; returns NULL and sets *out_len to 0 out of bounds. +// +// Force-aware: it yields the forced value while a force is active, the same one +// openplc_debug_read() would copy. A located variable is written by the program +// straight into its raw storage, so this deliberately does not hand out that raw +// pointer. +// +// THE POINTER IS ONLY VALID UNTIL THE CALLER YIELDS TO THE SCAN. That is the +// whole contract, and it is what makes this safe on a cooperative super-loop and +// unsafe anywhere else: the value can move the moment the PLC program runs +// again. A caller that can be preempted by the scan must use +// openplc_debug_read() and own the copy. This is why the underlying +// strucpp::debug::handle_ptr is not part of the Linux C exports. +// +// For STRING / WSTRING the pointer addresses the characters themselves, with no +// length prefix and no padding. *out_len is in BYTES for both, so a WSTRING +// reports 2 * its code-unit count and the caller can treat the region as opaque +// bytes without knowing the width. Both are capped at 126 code units, the same +// DEBUG_STRING_CAP the wire format uses. +const void* openplc_debug_ptr(uint8_t arr, uint16_t elem, uint16_t* out_len); + +// strucpp::debug::STATUS_* as plain macros, so a caller on this side of the +// boundary can interpret what openplc_debug_set / _write return without +// including the C++ runtime header. arduino_runtime_glue.cpp static_asserts +// these against the real constants. Note that success is 0x7E and not zero. +// Bytes a STRING / WSTRING occupies on the debug wire: 1 length byte plus the +// padded payload (126 characters, doubled for UTF-16 code units). Here for the +// same reason as the STATUS_* macros below -- the Modbus side sizes its frame +// from these and cannot include debug_dispatch.hpp -- and held to +// strucpp::debug::DEBUG_*_WIDTH by a static_assert in arduino_runtime_glue.cpp. +// +// A frame too small for the widest of these does not fail: it SKIPS the value, +// silently, which is how a WSTRING read came back empty rather than refused. +#define OPENPLC_DEBUG_STRING_WIRE 127 +#define OPENPLC_DEBUG_WSTRING_WIRE 253 + +// Characters (STRING) or UTF-16 code units (WSTRING) a value can hold on the +// wire -- the payload of the two widths above, without their length byte. A +// caller building a write buffer sizes it from this; a longer value is +// truncated, never refused. Also held to strucpp's DEBUG_STRING_CAP by a +// static_assert in arduino_runtime_glue.cpp. +#define OPENPLC_DEBUG_STRING_CAP 126 + +#define OPENPLC_DEBUG_STATUS_OK 0x7E +#define OPENPLC_DEBUG_STATUS_OUT_OF_BOUNDS 0x81 +#define OPENPLC_DEBUG_STATUS_DATA_TOO_LARGE 0x82 + #ifdef __cplusplus } #endif diff --git a/resources/sources/arduino/opcua_config.h b/resources/sources/arduino/opcua_config.h new file mode 100644 index 000000000..0995807e1 --- /dev/null +++ b/resources/sources/arduino/opcua_config.h @@ -0,0 +1,17 @@ +// opcua_config.h — placeholder stub. +// +// The editor overwrites this file with the project's real OPC-UA +// configuration for any target whose VPP declares `opcuaServer: true` +// (see `generate-opcua-header.ts`). It stays as-is on every other target. +// +// It exists so the OPC-UA translation units can `#include "opcua_config.h"` +// unconditionally: with OPCUA_ENABLED at 0 they compile to nothing, which +// keeps the server off the flash budget of boards that will never run it +// instead of guarding every include site. + +#ifndef OPCUA_CONFIG_H +#define OPCUA_CONFIG_H + +#define OPCUA_ENABLED 0 + +#endif // OPCUA_CONFIG_H diff --git a/resources/sources/arduino/opcua_types.h b/resources/sources/arduino/opcua_types.h new file mode 100644 index 000000000..99197e8d3 --- /dev/null +++ b/resources/sources/arduino/opcua_types.h @@ -0,0 +1,85 @@ +/* +opcua_types.h - shared contracts for the baremetal OPC-UA server +Copyright (C) 2026 Autonomy Logic + +Pure declarations, no storage. The generated `opcua_config.h` instantiates +`OPCUA_NODES[]` / `OPCUA_USERS[]` against the records declared here, so this +header and `generate-opcua-header.ts` are two halves of one ABI: change a +field on one side and the other must move with it. +*/ + +#ifndef OPCUA_TYPES_H +#define OPCUA_TYPES_H + +#include + +// Permission bitmap: two bits per role packed into one byte (viewer 0-1, +// operator 2-3, engineer 4-5). A byte rather than three enums because it is +// per-node flash data and the hot-path check is then a shift and a mask. +#define OPCUA_PERM_READ 0x1u +#define OPCUA_PERM_WRITE 0x2u + +#define OPCUA_ROLE_VIEWER 0 +#define OPCUA_ROLE_OPERATOR 1 +#define OPCUA_ROLE_ENGINEER 2 + +/** Role's 2-bit field out of a packed permission byte. */ +static inline uint8_t opcua_perm_for_role(uint8_t packed, uint8_t role) +{ + return (uint8_t)((packed >> (role * 2)) & 0x3u); +} + +static inline bool opcua_can_read(uint8_t packed, uint8_t role) +{ + return (opcua_perm_for_role(packed, role) & OPCUA_PERM_READ) != 0; +} + +static inline bool opcua_can_write(uint8_t packed, uint8_t role) +{ + return (opcua_perm_for_role(packed, role) & OPCUA_PERM_WRITE) != 0; +} + +// `strucpp::debug::TypeTag` values that need naming on this side of the C +// boundary. Only the two string tags do: every other tag is handled positionally +// through `kTagToUaType[]`, but these two decide whether a value is a scalar or a +// {length, data} header, which is a branch and not a table lookup. +// +// Duplicated from the C++ `debug_table.hpp` rather than included, because this +// header is reached from plain-C translation units. `arduino_runtime_glue.cpp` +// sees both and static_asserts them equal, so the duplication cannot drift +// silently. +#define OPCUA_TAG_STRING 19 +#define OPCUA_TAG_WSTRING 20 + +// One addressable leaf. `arr` / `elem` are the strucpp debug-table coordinates, +// so reading a node is `handle_read(arr, elem, dest)` against a table the +// compiler already emitted. `tag` is a `strucpp::debug::TypeTag`, duplicated +// here rather than including the C++ `debug_table.hpp`. +// +// Three places agree on that numbering and nothing but review keeps two of them +// honest: this header, `kTagToUaType[]` in opcua_nodes.cpp, and `TYPE_TAGS` in +// the editor's generate-opcua-header.ts. The firmware end is guarded -- an +// unknown tag is skipped, not misread -- and the generator refuses to emit a tag +// it has no mapping for, so a disagreement costs a build warning rather than a +// wrong value. +typedef struct +{ + uint16_t node_id; // numeric NodeId in the server's namespace + const char* browse_name; // flash-resident; also the display name + uint8_t tag; // strucpp::debug::TypeTag + uint8_t arr; // debug-table array index + uint16_t elem; // debug-table element index + uint8_t perms; // packed, see above +} opcua_node_t; + +/** A username/password user. `password_hash` is the editor's + * `pbkdf2:sha256:$$` string, verified by a KDF chunked + * across scan cycles. */ +typedef struct +{ + const char* username; + const char* password_hash; + uint8_t role; +} opcua_user_t; + +#endif // OPCUA_TYPES_H diff --git a/resources/sources/arduino/openplc.h b/resources/sources/arduino/openplc.h index ddfc8d7e4..53fbc4407 100644 --- a/resources/sources/arduino/openplc.h +++ b/resources/sources/arduino/openplc.h @@ -114,6 +114,21 @@ void updateOutputBuffers(); * ---------------------------------------------------------------------- */ uint8_t hardwareStateSwitch(void); +/* ---- Optional: reboot into the device's firmware bootloader ------------ + * Weak default is a no-op; a HAL whose device has a resident bootloader + * overrides it so the editor can re-flash over the network. Invoked from the + * Modbus FC 0x4C handler after the response frame is built but before the + * transport sends it, so an implementation must ARM the reset, not perform it. */ +void hardwareRebootToBootloader(void); + +/* ---- Optional: programming lock --------------------------------------- + * A device that can be locked at the panel reports it here; the runtime checks + * it before honouring reboot-to-bootloader FC 0x4C. Both are called from the + * Modbus handler and must return immediately without blocking: the unlock answer + * arrives as a later change of hardwareProgrammingLocked(). */ +uint8_t hardwareProgrammingLocked(void); +void hardwarePromptUnlock(void); + /* ---- Optional: state indication ---------------------------------------- * There is no indication callback. The runtime holds the state; a HAL with * a status LED reads it inside updateOutputBuffers() (which the runtime diff --git a/resources/sources/arduino/s7comm_config.h b/resources/sources/arduino/s7comm_config.h new file mode 100644 index 000000000..4d438a4c1 --- /dev/null +++ b/resources/sources/arduino/s7comm_config.h @@ -0,0 +1,21 @@ +// s7comm_config.h — placeholder stub. +// +// The editor overwrites this file with the project's real S7Comm +// configuration for any target whose VPP declares `s7Server: true` +// (see `generate-s7comm-header.ts`). It stays as-is on every other target. +// +// It exists so the S7Comm translation units can `#include "s7comm_config.h"` +// unconditionally: with S7COMM_ENABLED at 0 they compile to nothing, which +// keeps the server off the flash budget of boards that will never run it +// instead of guarding every include site. +// +// The property that has to hold, and that is tested: a project with no S7 +// server configured must produce a byte-identical image to one built before +// this feature existed. + +#ifndef S7COMM_CONFIG_H +#define S7COMM_CONFIG_H + +#define S7COMM_ENABLED 0 + +#endif // S7COMM_CONFIG_H diff --git a/resources/sources/arduino/s7comm_types.h b/resources/sources/arduino/s7comm_types.h new file mode 100644 index 000000000..dcbf9fccf --- /dev/null +++ b/resources/sources/arduino/s7comm_types.h @@ -0,0 +1,76 @@ +/* +s7comm_types.h - shared contracts for the baremetal S7Comm server +Copyright (C) 2026 Autonomy Logic + +Pure declarations, no storage. The generated `s7comm_config.h` instantiates +`S7COMM_AREAS[]` against the record declared here, so this header and +`generate-s7comm-header.ts` are two halves of one ABI: change a field on one +side and the other must move with it. +*/ + +#ifndef S7COMM_TYPES_H +#define S7COMM_TYPES_H + +#include + +// Area codes, as they travel on the wire. Duplicated from the S7 library rather +// than included from it, because this header is part of the contract with the +// code generator, which has no business including an Arduino library. +#define S7COMM_AREA_PE 0x81u // Process inputs (I) +#define S7COMM_AREA_PA 0x82u // Process outputs (Q) +#define S7COMM_AREA_MK 0x83u // Merkers (M) +#define S7COMM_AREA_DB 0x84u // Data blocks (DB) + +// Which OpenPLC located-variable buffer an area is cut from. Runtime v4's model, +// so a project moved between targets addresses the same variable the same way. +// Not every buffer exists on every target -- `bool_memory` and the `byte_*` +// buffers are v3/v4 only -- so the generator refuses them at build time. +#define S7COMM_BUF_BOOL_INPUT 0u // %IX -> bool_input[byte][bit] +#define S7COMM_BUF_BOOL_OUTPUT 1u // %QX -> bool_output[byte][bit] +#define S7COMM_BUF_INT_INPUT 2u // %IW -> int_input[] +#define S7COMM_BUF_INT_OUTPUT 3u // %QW -> int_output[] +#define S7COMM_BUF_INT_MEMORY 4u // %MW -> int_memory[] +#define S7COMM_BUF_DINT_MEMORY 5u // %MD -> dint_memory[] +#define S7COMM_BUF_LINT_MEMORY 6u // %ML -> lint_memory[] + +// One addressable region. An S7 area is a flat run of bytes: no address space, +// no node ids, no browse names, no per-node permissions. The table is emitted +// `const` and lives in flash, fixed when the project is built. +typedef struct +{ + uint8_t area; // S7COMM_AREA_* + uint16_t db_number; // meaningful only for S7COMM_AREA_DB; 0 otherwise + uint16_t size_bytes; // the bound every request is checked against + uint8_t buffer; // S7COMM_BUF_* + uint16_t start_index; // first slot of that buffer the area covers + uint8_t writable; // 0 = reads only, whatever the server-wide setting +} s7comm_area_t; + +/** Bytes one slot of a buffer contributes to an S7 area. + * + * Bit buffers contribute one byte per eight slots, which is why bit areas are + * addressed as `byte.bit` and why this returns 0 for them: callers must use the + * bit path rather than multiplying. Anything else is a straight width. + */ +static inline uint8_t s7comm_slot_bytes(uint8_t buffer) +{ + switch (buffer) + { + case S7COMM_BUF_BOOL_INPUT: + case S7COMM_BUF_BOOL_OUTPUT: return 0; // see the note above + case S7COMM_BUF_INT_INPUT: + case S7COMM_BUF_INT_OUTPUT: + case S7COMM_BUF_INT_MEMORY: return 2; + case S7COMM_BUF_DINT_MEMORY: return 4; + case S7COMM_BUF_LINT_MEMORY: return 8; + default: return 0; + } +} + +/** True when the buffer is addressed a bit at a time. */ +static inline bool s7comm_is_bit_buffer(uint8_t buffer) +{ + return buffer == S7COMM_BUF_BOOL_INPUT || buffer == S7COMM_BUF_BOOL_OUTPUT; +} + +#endif // S7COMM_TYPES_H diff --git a/scripts/compare-surfaces.py b/scripts/compare-surfaces.py index c3b1465f3..db03c93c8 100644 --- a/scripts/compare-surfaces.py +++ b/scripts/compare-surfaces.py @@ -8,8 +8,8 @@ - backend/shared/ (application logic, use cases) - __architecture__/ (validation scripts) -Mapped surfaces (different path per repo, compared by structure within -the mapped base — see MAPPED_SURFACES): +Mapped surfaces (different path per repo, compared BOTH WAYS within the +mapped base, minus declared desktop-only trees — see MAPPED_SURFACES): - bare-metal-runtime (editor: resources/sources/{arduino,Baremetal}; web: src/assets/firmware/{arduino,Baremetal}) @@ -25,9 +25,37 @@ import argparse import hashlib import json +import subprocess import sys from pathlib import Path +_TRACKED_CACHE: dict[Path, set[str] | None] = {} + + +def tracked_files(repo: Path) -> set[str] | None: + """Repo-relative paths git tracks, or None if `repo` is not a git repo. + + The comparison is about what the two REPOSITORIES contain, not what happens + to be sitting in a working directory. Walking the filesystem meant a stale + ignored tree on a developer's machine failed the gate while CI passed -- + resources/sources/MatIEC, gitignored and untracked since strucpp replaced + it, produced exactly that. Build output, .DS_Store and half-deleted + experiments are the same class of noise.""" + repo = repo.resolve() + if repo in _TRACKED_CACHE: + return _TRACKED_CACHE[repo] + try: + out = subprocess.run( + ["git", "-C", str(repo), "ls-files", "-z"], + capture_output=True, check=True, + ).stdout.decode() + result: set[str] | None = {p for p in out.split("\0") if p} + except (subprocess.CalledProcessError, FileNotFoundError): + # Not a git repo, or no git available: fall back to the filesystem. + result = None + _TRACKED_CACHE[repo] = result + return result + SURFACES = [ "frontend", "middleware/shared", @@ -35,16 +63,13 @@ "__architecture__", ] -# Surfaces that live at a DIFFERENT path in each repo (so they can't be a -# plain src-relative entry in SURFACES). `editor`/`web` are repo-root-relative -# (the repo root is the parent of the --editor-root/--web-root src dirs). +# Surfaces that live at a DIFFERENT path in each repo (so they can't be a plain +# src-relative entry in SURFACES). `editor`/`web` are repo-root-relative. # -# Checked ONE-WAY (web is a subset of the editor's tree): every file the web -# bundle ships under `web` must be byte-identical to the editor's `editor` -# tree at the same relative path. Editor-only files are NOT flagged — the -# editor's resources/sources/hal/ also carries ~30 per-board HALs the web -# bundle (AVR8js simulator only) does not ship. A content edit to any shared -# runtime file still surfaces as a hash mismatch. +# Checked BOTH WAYS. The editor's tree is a superset only in trees the web bundle +# deliberately does not ship; those are listed in `editor_only_prefixes` and +# anything outside them must exist on both sides. A one-way check hid files +# deleted from web and files added to the editor that web also needs. MAPPED_SURFACES = [ { "name": "bare-metal-runtime", @@ -54,6 +79,13 @@ # its own bundler glue here (e.g. an index.ts that imports the sources # as strings) which the editor does not have. "exts": [".cpp", ".hpp", ".c", ".h", ".ino"], + # Editor-only by design. Each is a desktop-compile concern the web + # bundle (AVR8js simulator) has no use for: + "editor_only_prefixes": [ + "avr-libstdcpp/", # AVR toolchain ships no C++ stdlib + "hal/", # ~30 per-board HALs; web simulates one + "show_properties_dummy/", # desktop sketch-probe stub + ], }, ] @@ -81,11 +113,21 @@ def collect_hashes(root: Path, surface: str) -> dict[str, str]: base = root / surface if not base.exists(): return {} + repo = root.parent + tracked = tracked_files(repo) result = {} for path in sorted(base.rglob("*")): - if path.is_file() and not is_test_file(path): - rel = str(path.relative_to(root)) - result[rel] = hash_file(path) + if not path.is_file() or is_test_file(path): + continue + if tracked is not None: + try: + repo_rel = str(path.resolve().relative_to(repo.resolve())) + except ValueError: + continue + if repo_rel not in tracked: + continue + rel = str(path.relative_to(root)) + result[rel] = hash_file(path) return result @@ -114,39 +156,67 @@ def compare_surface( } -def collect_all_hashes(base: Path, exts: list[str] | None = None) -> dict[str, str]: - """Hash every file under `base`, keyed by the path relative to `base`. - When `exts` is given, only files with one of those suffixes are included.""" +def collect_all_hashes( + base: Path, exts: list[str] | None = None, repo: Path | None = None +) -> dict[str, str]: + """Hash every tracked file under `base`, keyed by the path relative to + `base`. When `exts` is given, only files with one of those suffixes are + included. Untracked and ignored files are skipped — see tracked_files().""" result = {} if not base.exists(): return result ext_set = set(exts) if exts else None + tracked = tracked_files(repo) if repo is not None else None for path in sorted(base.rglob("*")): - if path.is_file() and not is_test_file(path) and (ext_set is None or path.suffix in ext_set): - result[str(path.relative_to(base))] = hash_file(path) + if not path.is_file() or is_test_file(path): + continue + if ext_set is not None and path.suffix not in ext_set: + continue + if tracked is not None: + try: + repo_rel = str(path.resolve().relative_to(repo.resolve())) + except ValueError: + continue + if repo_rel not in tracked: + continue + result[str(path.relative_to(base))] = hash_file(path) return result def compare_mapped(web_repo: Path, editor_repo: Path, mapped: dict) -> dict: - """One-way check: every (filtered) file the web bundle ships under - `mapped['web']` must exist and be byte-identical in the editor tree at - `mapped['editor']`. Editor-only files are not flagged (web ships a - subset).""" + """Two-way check over the mapped trees. + + Every (filtered) file must exist on both sides and be byte-identical, + EXCEPT editor files under one of `editor_only_prefixes` — trees the web + bundle deliberately does not ship. Everything else being symmetric is what + stops a file going missing on one side unnoticed.""" web_base = web_repo / mapped["web"] editor_base = editor_repo / mapped["editor"] - web_hashes = collect_all_hashes(web_base, mapped.get("exts")) + exts = mapped.get("exts") + web_hashes = collect_all_hashes(web_base, exts, web_repo) + editor_hashes = collect_all_hashes(editor_base, exts, editor_repo) + + editor_only = tuple(mapped.get("editor_only_prefixes", ())) diffs = [] - for rel, h in sorted(web_hashes.items()): - editor_path = editor_base / rel - if not editor_path.is_file(): + for rel in sorted(set(web_hashes) | set(editor_hashes)): + in_web = rel in web_hashes + in_editor = rel in editor_hashes + if in_web and not in_editor: diffs.append({"file": rel, "reason": "only_in_web"}) - elif hash_file(editor_path) != h: + elif in_editor and not in_web: + # Declared desktop-only trees are the one legitimate asymmetry. + if rel.startswith(editor_only): + continue + diffs.append({"file": rel, "reason": "only_in_editor"}) + elif web_hashes[rel] != editor_hashes[rel]: diffs.append({"file": rel, "reason": "hash_mismatch"}) + checked = len(set(web_hashes) | {r for r in editor_hashes + if not r.startswith(editor_only)}) return { "match": len(diffs) == 0, - "files_checked": len(web_hashes), + "files_checked": checked, "diffs": diffs, "mapped": {"editor": mapped["editor"], "web": mapped["web"]}, } diff --git a/src/App.tsx b/src/App.tsx index d8600f120..d35db33dc 100644 --- a/src/App.tsx +++ b/src/App.tsx @@ -28,7 +28,7 @@ import { WorkspaceScreen } from './frontend/screens/workspace-screen' import { bootStLsp } from './frontend/services/st-lsp/boot' import { openPLCStoreBase, useOpenPLCStore } from './frontend/store' import { stlibsToSystemLibraries } from './frontend/utils/stlib-to-system-library' -import { editorPorts, setProjectPath, setRuntimeIpAddress } from './middleware/editor-platform' +import { editorPorts, packageUpdateNotifier, setProjectPath, setRuntimeIpAddress } from './middleware/editor-platform' import { PlatformProvider } from './middleware/shared/providers' /** @@ -65,6 +65,11 @@ hydrateLibraries() // catch events fired before any component mounts. editorPorts.library.onLibrariesChanged(() => hydrateLibraries()) +// Fetch the VPP catalog once, now, so a build can tell the user a newer +// package exists without waiting on the network to find out. Nothing awaits +// this and nothing reports its failure: offline simply means no such notice. +void packageUpdateNotifier.prime() + // Register the basedpyright worker URL so the Monaco-side adapter // can spin up the Python LSP on first POU open. No service // start yet — the LSP is lazy-initialised in diff --git a/src/__architecture__/validate.ts b/src/__architecture__/validate.ts index 333812800..3e8a6067c 100644 --- a/src/__architecture__/validate.ts +++ b/src/__architecture__/validate.ts @@ -17,6 +17,9 @@ import { fileURLToPath } from 'node:url' // --------------------------------------------------------------------------- type LayerName = + | 'cli' + | 'backend-editor' + | 'main' | 'assets' | 'utils' | 'data' @@ -109,6 +112,68 @@ const LAYER_RULES: Record = { name: 'Components (frontend/components/)', allowedDeps: ['ports', 'provider', 'store', 'hooks', 'services', 'components', 'data', 'utils', 'assets'], }, + main: { + name: 'Main (main/) — the Electron main process entry point', + /** + * A process entry point, so it may reach every desktop layer. Mapped for the + * same reason `cli` is: unmapped directories are skipped, and leaving the two + * entry points invisible meant nothing checked what they reached into. + */ + allowedDeps: [ + 'ports', + 'provider', + 'store', + 'services', + 'utils', + 'data', + 'assets', + 'types', + 'backend-shared', + 'backend-editor', + 'adapters', + 'cli', + 'main', + ], + }, + 'backend-editor': { + name: 'Backend Editor (backend/editor/) — desktop main-process modules', + /** + * Mapped so the CLI's imports of it can be checked. It was unmapped, and an + * unmapped directory is SKIPPED — which is why 36 new CLI files sailed + * through this gate. `main/` is still unmapped for the same historical + * reason; mapping that too is a follow-up, not this change. + */ + allowedDeps: ['ports', 'provider', 'utils', 'data', 'types', 'backend-shared', 'backend-editor', 'main'], + }, + cli: { + name: 'CLI (cli/) — the headless entry point', + /** + * The CLI is a process entry point, like `main/`, so it may reach the + * platform layers a main process reaches. It is listed rather than left + * unmapped because unmapped files are SKIPPED: 36 new files were invisible + * to this gate, and the import it should have flagged was right there — a + * Node/Electron-main process importing the renderer's Zustand singleton. + * + * `store` is allowed deliberately and narrowly: the CLI hydrates the real + * store so the editor's own resolvers (alias resolution, the debug-spec + * resolver) run against the same state the GUI gives them. Reimplementing + * those is the drift this whole effort exists to prevent. + */ + allowedDeps: [ + 'ports', + 'provider', + 'store', + 'services', + 'utils', + 'data', + 'assets', + 'types', + 'backend-shared', + 'backend-editor', + 'adapters', + 'cli', + ], + }, architecture: { name: 'Architecture (__architecture__/)', allowedDeps: [], @@ -172,6 +237,11 @@ function getLayer(filePath: string): LayerName | null { if (rel.startsWith('backend/shared/')) return 'backend-shared' if (rel.startsWith('backend/web/')) return 'backend-web' + // The headless CLI entry point (DOPE-567). + if (rel.startsWith('cli/')) return 'cli' + if (rel.startsWith('backend/editor/')) return 'backend-editor' + if (rel.startsWith('main/')) return 'main' + // Frontend layers if (rel.startsWith('frontend/store/')) return 'store' if (rel.startsWith('frontend/services/')) return 'services' @@ -242,7 +312,16 @@ function tryResolveFile(base: string): string | null { } function resolveImport(importPath: string, fromFile: string): string | null { - // Only check relative imports (within src/) + // `@root/*` is the project's alias for `src/*`. Resolving it matters as much as + // resolving a relative path: skipping it made every aliased import invisible to + // this gate, and newer code uses the alias far more than `../..` chains — so a + // layer violation written as `@root/frontend/store` passed silently. + if (importPath.startsWith('@root/')) { + const resolved = join(SRC_ROOT, importPath.slice('@root/'.length)) + return tryResolveFile(resolved) + } + + // Otherwise only relative imports are within src/. if (!importPath.startsWith('.')) return null const dir = dirname(fromFile) @@ -268,6 +347,49 @@ function resolveImport(importPath: string, fromFile: string): string | null { * layer rule permits. */ const KNOWN_EXCEPTIONS: Record = { + // --------------------------------------------------------------------------- + // Pre-existing, surfaced by resolving `@root/*` (DOPE-567) + // + // This gate only ever resolved RELATIVE imports, so every `@root/...` import + // was invisible to it — and newer code uses the alias far more than `../..` + // chains. Teaching `resolveImport` the alias was needed to check the CLI at + // all, and it revealed these 22 files, none of them touched by that work. + // + // Listed rather than silently re-hidden: each one is a real layer crossing + // that predates the alias being resolved, and they belong in a focused + // follow-up (mostly the XML generators reaching into `store`/`components`, the + // EtherCAT screens reaching into `backend/shared`, and `types/IPC/*` importing + // schema types from `backend/shared`). + // --------------------------------------------------------------------------- + 'frontend/components/_features/[workspace]/editor/device/ethercat/components/advanced-tab.tsx': ['backend-shared'], + 'frontend/components/_features/[workspace]/editor/device/ethercat/components/device-configuration-form.tsx': [ + 'backend-shared', + ], + 'frontend/components/_features/[workspace]/editor/device/ethercat/components/discovered-device-table.tsx': [ + 'backend-shared', + ], + 'frontend/components/_features/[workspace]/editor/device/ethercat/components/esi-device-info.tsx': ['backend-shared'], + 'frontend/components/_features/[workspace]/editor/device/ethercat/components/global-settings-tab.tsx': [ + 'backend-shared', + ], + 'frontend/components/_features/[workspace]/editor/device/ethercat/index.tsx': ['backend-shared'], + 'frontend/hooks/use-device-configuration.ts': ['backend-shared', 'components'], + 'frontend/utils/PLC/xml-generator/codesys/language/fbd-xml.ts': ['components', 'store'], + 'frontend/utils/PLC/xml-generator/codesys/language/ladder-xml.ts': ['components', 'store'], + 'frontend/utils/PLC/xml-generator/codesys/pou-xml.ts': ['store'], + 'frontend/utils/PLC/xml-generator/old-editor/language/fbd-xml.ts': ['components', 'store'], + 'frontend/utils/PLC/xml-generator/old-editor/language/ladder-xml.ts': ['components', 'store'], + 'frontend/utils/PLC/xml-generator/old-editor/pou-xml.ts': ['store'], + 'frontend/utils/PLC/xml-parser/language/fbd-xml.ts': ['components', 'store'], + 'frontend/utils/PLC/xml-parser/language/ladder-xml.ts': ['components', 'store'], + 'frontend/utils/device.ts': ['backend-shared'], + 'types/IPC/pou-service/create-pou-file.ts': ['backend-shared'], + 'types/IPC/pou-service/index.ts': ['backend-shared'], + 'types/IPC/project-service/create-project.ts': ['backend-shared'], + 'types/IPC/project-service/index.ts': ['backend-shared'], + 'types/IPC/project-service/read-project.ts': ['backend-shared'], + 'backend/editor/contracts/types/modules/ipc/main.ts': ['store'], + // FBD paste/duplicate helpers — needs molecule-level buildGenericNode from components 'frontend/store/slices/fbd/utils/index.ts': ['components'], // Ladder paste/duplicate helpers — needs nodesBuilder from component atoms diff --git a/src/backend/editor/cli-shim/__tests__/shim-plan.test.ts b/src/backend/editor/cli-shim/__tests__/shim-plan.test.ts new file mode 100644 index 000000000..f92c7559c --- /dev/null +++ b/src/backend/editor/cli-shim/__tests__/shim-plan.test.ts @@ -0,0 +1,310 @@ +import { toPowerShellLiteral } from '../install-shim' +import { + candidateDirectories, + describeUnstableLocation, + isOnPath, + mayReplace, + pathHint, + planShimInstall, + renderShim, + resolveShimTarget, + SHIM_MARKER, + platformSwitches, + quoteForShell, + shimFileName, + type ShimEnvironment, +} from '../shim-plan' + +const posix = (overrides: Partial = {}): ShimEnvironment => ({ + platform: 'linux', + home: '/home/dev', + pathVariable: '/usr/bin:/bin', + ...overrides, +}) + +const windows = (overrides: Partial = {}): ShimEnvironment => ({ + platform: 'win32', + home: 'C:\\Users\\dev', + pathVariable: 'C:\\Windows\\system32', + localAppData: 'C:\\Users\\dev\\AppData\\Local', + ...overrides, +}) + +const allWritable = { isWritable: () => true } +const noneWritable = { isWritable: () => false } + +describe('shimFileName', () => { + it('gives Windows an extension the shell will execute', () => { + expect(shimFileName('win32')).toBe('openplc-cli.cmd') + expect(shimFileName('darwin')).toBe('openplc-cli') + expect(shimFileName('linux')).toBe('openplc-cli') + }) +}) + +describe('candidateDirectories', () => { + it('offers only user-writable locations — never /usr/local/bin or Program Files', () => { + // A convenience command must not require an elevation prompt at first launch. + const linux = candidateDirectories(posix()) + expect(linux).toEqual(['/home/dev/.local/bin', '/home/dev/bin']) + expect(linux.join(' ')).not.toContain('/usr/local') + + const win = candidateDirectories(windows()) + expect(win).toEqual(['C:\\Users\\dev\\AppData\\Local\\Programs\\openplc-cli']) + expect(win.join(' ')).not.toMatch(/Program Files/) + }) + + it('falls back to a derived LOCALAPPDATA when the variable is missing', () => { + expect(candidateDirectories(windows({ localAppData: undefined }))).toEqual([ + 'C:\\Users\\dev\\AppData\\Local\\Programs\\openplc-cli', + ]) + }) +}) + +describe('isOnPath', () => { + it('matches ignoring a trailing separator, so no duplicate entry is added', () => { + expect(isOnPath('/home/dev/bin', posix({ pathVariable: '/usr/bin:/home/dev/bin/' }))).toBe(true) + }) + + it('is case-insensitive on Windows only', () => { + expect(isOnPath('C:\\Tools', windows({ pathVariable: 'c:\\tools' }))).toBe(true) + expect(isOnPath('/home/Dev/bin', posix({ pathVariable: '/home/dev/bin' }))).toBe(false) + }) + + it('ignores empty entries and an empty directory', () => { + expect(isOnPath('/home/dev/bin', posix({ pathVariable: '::/home/dev/bin' }))).toBe(true) + expect(isOnPath('', posix({ pathVariable: '::' }))).toBe(false) + }) +}) + +describe('planShimInstall', () => { + it('prefers a writable directory that is already on PATH', () => { + // ~/bin is second in preference but already on PATH, so it wins — the user + // gets a working command with no profile edit. + const plan = planShimInstall(posix({ pathVariable: '/usr/bin:/home/dev/bin' }), allWritable) + expect(plan?.directory).toBe('/home/dev/bin') + expect(plan?.onPath).toBe(true) + expect(plan?.shimPath).toBe('/home/dev/bin/openplc-cli') + }) + + it('falls back to the first writable directory and reports it is not on PATH', () => { + const plan = planShimInstall(posix(), allWritable) + expect(plan?.directory).toBe('/home/dev/.local/bin') + expect(plan?.onPath).toBe(false) + }) + + it('skips a directory it cannot write to', () => { + const plan = planShimInstall(posix(), { isWritable: (d) => d === '/home/dev/bin' }) + expect(plan?.directory).toBe('/home/dev/bin') + }) + + it('returns undefined when nothing is writable, rather than pretending', () => { + expect(planShimInstall(posix(), noneWritable)).toBeUndefined() + }) + + it('reports PATH as editable only on Windows', () => { + expect(planShimInstall(windows(), allWritable)?.canUpdatePath).toBe(true) + expect(planShimInstall(posix(), allWritable)?.canUpdatePath).toBe(false) + }) + + it('joins Windows paths with a backslash', () => { + expect(planShimInstall(windows(), allWritable)?.shimPath).toBe( + 'C:\\Users\\dev\\AppData\\Local\\Programs\\openplc-cli\\openplc-cli.cmd', + ) + }) +}) + +describe('renderShim', () => { + it('execs the target and forwards arguments intact on POSIX', () => { + const shim = renderShim( + { command: '/Applications/OpenPLC Editor.app/Contents/MacOS/OpenPLC Editor', leadingArgs: ['--cli'] }, + 'darwin', + ) + expect(shim).toContain('#!/bin/sh') + // `exec` so the shim does not linger and the exit code passes through; + // `"$@"` so a project path containing spaces survives. + expect(shim).toContain(`exec '/Applications/OpenPLC Editor.app/Contents/MacOS/OpenPLC Editor' '--cli' "$@"`) + expect(shim).toContain(SHIM_MARKER) + }) + + it('quotes the target and forwards %* on Windows, with CRLF endings', () => { + const shim = renderShim( + { command: 'C:\\Program Files\\OpenPLC Editor\\OpenPLC Editor.exe', leadingArgs: ['--cli'] }, + 'win32', + ) + expect(shim).toContain('@echo off') + expect(shim).toContain('"C:\\Program Files\\OpenPLC Editor\\OpenPLC Editor.exe" "--cli" %*') + expect(shim).toContain('\r\n') + }) + + describe('resolveShimTarget', () => { + it('points at the AppImage FILE, not the ephemeral mount', () => { + // The mount path changes every launch; $APPIMAGE is where the user keeps the + // file, and the AppImage runtime forwards arguments to the app. + const target = resolveShimTarget('/tmp/.mount_OpenPLxYz/openplc-editor', { + ...posix(), + appImagePath: '/home/dev/Applications/OpenPLC-Editor.AppImage', + }) + expect(target).toBe('/home/dev/Applications/OpenPLC-Editor.AppImage') + }) + + it('uses the running executable when there is no AppImage', () => { + expect(resolveShimTarget('/opt/openplc/openplc-editor', posix())).toBe('/opt/openplc/openplc-editor') + }) + + it('ignores $APPIMAGE off Linux, where it means nothing', () => { + const target = resolveShimTarget('/Applications/X.app/Contents/MacOS/X', { + ...posix({ platform: 'darwin' }), + appImagePath: '/somewhere/Weird.AppImage', + }) + expect(target).toBe('/Applications/X.app/Contents/MacOS/X') + }) + }) + + describe('describeUnstableLocation', () => { + it('refuses a macOS disk image and says to install to Applications', () => { + const reason = describeUnstableLocation('/Volumes/OpenPLC Editor/OpenPLC Editor.app/Contents/MacOS/x', 'darwin') + expect(reason).toMatch(/disk image/i) + expect(reason).toMatch(/Applications/) + }) + + it('refuses a Gatekeeper-translocated app, which looks like a normal launch', () => { + const reason = describeUnstableLocation( + '/private/var/folders/ab/AppTranslocation/UUID/d/OpenPLC Editor.app/Contents/MacOS/x', + 'darwin', + ) + expect(reason).toMatch(/quarantined|randomised/i) + }) + + it('refuses a temporary AppImage mount only when $APPIMAGE gave nothing', () => { + expect(describeUnstableLocation('/tmp/.mount_abc/openplc', 'linux')).toMatch(/APPIMAGE/) + // With the file path resolved, the location is stable and allowed. + expect(describeUnstableLocation('/home/dev/Apps/OpenPLC.AppImage', 'linux')).toBeUndefined() + }) + + it('allows an installed app, and never blocks Windows', () => { + expect(describeUnstableLocation('/Applications/OpenPLC Editor.app/Contents/MacOS/x', 'darwin')).toBeUndefined() + expect(describeUnstableLocation('C:\\Program Files\\OpenPLC\\x.exe', 'win32')).toBeUndefined() + }) + }) + + describe('mayReplace', () => { + it('writes when nothing is there, and replaces only our own shim', () => { + expect(mayReplace(undefined)).toBe(true) + expect(mayReplace(`#!/bin/sh\n# ${SHIM_MARKER}\n`)).toBe(true) + // Someone else's openplc-cli on PATH is not ours to overwrite. + expect(mayReplace('#!/bin/sh\nexec /opt/mine/openplc-cli "$@"\n')).toBe(false) + }) + }) + + describe('pathHint', () => { + it('says nothing when the directory is already on PATH', () => { + const plan = planShimInstall(posix({ pathVariable: '/home/dev/.local/bin' }), allWritable) + expect(plan && pathHint(plan, 'linux')).toBeUndefined() + }) + + it('gives a copyable line on POSIX instead of editing a shell profile', () => { + const plan = planShimInstall(posix(), allWritable) + const hint = plan && pathHint(plan, 'linux') + expect(hint).toContain('/home/dev/.local/bin') + expect(hint).toContain('~/.profile') + }) + + it('tells Windows users a new terminal is needed', () => { + const plan = planShimInstall(windows(), allWritable) + expect(plan && pathHint(plan, 'win32')).toMatch(/new terminal/i) + }) + }) + + it('repeats a development script path, or the shim runs plain Electron', () => { + // Without the script, `openplc-cli --version` answered with Electron's own + // version and looked like it had worked. + const shim = renderShim( + { command: '/repo/node_modules/electron/dist/Electron', leadingArgs: ['/repo/openplc-cli.dev.js', '--cli'] }, + 'linux', + ) + // Switches precede the script path, which is where Electron expects them. + expect(shim).toContain( + `exec '/repo/node_modules/electron/dist/Electron' '--ozone-platform=headless' ` + + `'--disable-gpu' '/repo/openplc-cli.dev.js' '--cli' "$@"`, + ) + }) +}) + +describe('platformSwitches', () => { + it('passes the Linux switches Chromium reads before our script runs', () => { + // Set from JS they are too late: Ozone initialises during startup, so + // `appendSwitch` never gets a chance. The shim IS the command line, which is + // why they live here. + expect(platformSwitches('linux')).toEqual(['--ozone-platform=headless', '--disable-gpu']) + }) + + it('leaves the Chromium sandbox ON unless the installing call had it off', () => { + // Baking `--no-sandbox` in unconditionally handed every Linux user a command + // that permanently disables the sandbox, to accommodate the containers that + // are the only place it cannot start. + expect(platformSwitches('linux')).not.toContain('--no-sandbox') + expect(platformSwitches('linux', { sandboxDisabled: false })).not.toContain('--no-sandbox') + }) + + it('carries --no-sandbox forward for the caller that needed it, first', () => { + // First, because Chromium reads it during startup. + expect(platformSwitches('linux', { sandboxDisabled: true })).toEqual([ + '--no-sandbox', + '--ozone-platform=headless', + '--disable-gpu', + ]) + }) + + it('adds no sandbox switch off Linux, even when asked', () => { + expect(platformSwitches('darwin', { sandboxDisabled: true })).toEqual([]) + expect(platformSwitches('win32', { sandboxDisabled: true })).toEqual([]) + }) + + it('adds nothing on macOS or Windows, which have neither problem', () => { + expect(platformSwitches('darwin')).toEqual([]) + expect(platformSwitches('win32')).toEqual([]) + }) + + it('renders them into the Linux shim ahead of the CLI marker', () => { + const shim = renderShim({ command: '/home/dev/App.AppImage', leadingArgs: ['--cli'] }, 'linux') + expect(shim).toContain(`exec '/home/dev/App.AppImage' '--ozone-platform=headless' '--disable-gpu' '--cli' "$@"`) + }) + + it('renders the sandbox switch into the shim for a container install', () => { + const shim = renderShim( + { command: '/home/dev/App.AppImage', leadingArgs: ['--cli'], sandboxDisabled: true }, + 'linux', + ) + expect(shim).toContain( + `exec '/home/dev/App.AppImage' '--no-sandbox' '--ozone-platform=headless' '--disable-gpu' '--cli' "$@"`, + ) + }) +}) + +describe('quoteForShell', () => { + it('suppresses POSIX expansion, so a path with $ or a backtick runs literally', () => { + // Double quotes would still expand these — the shim would run something else. + expect(quoteForShell('/home/$USER/bin/app', 'linux')).toBe("'/home/$USER/bin/app'") + expect(quoteForShell('/home/`whoami`/app', 'darwin')).toBe("'/home/`whoami`/app'") + }) + + it('escapes an embedded single quote by closing, escaping and reopening', () => { + expect(quoteForShell("/home/o'brien/app", 'linux')).toBe("'/home/o'\\''brien/app'") + }) + + it('doubles % on Windows so cmd reads it literally, keeping spaces quoted', () => { + expect(quoteForShell('C:\\Program Files\\%APPDATA%\\app.exe', 'win32')).toBe( + '"C:\\Program Files\\%%APPDATA%%\\app.exe"', + ) + }) +}) + +describe('toPowerShellLiteral', () => { + it('single-quotes so nothing is expanded, doubling an embedded quote', () => { + // `powershell -Command