SAMLdecode

A simple static tool to decode SAML HTTP-Redirect (deflated and Base64 encoded) requests.

Usage

1. Open index.html in your web browser.
2. Paste the full URL containing the SAMLRequest= parameter into the first textarea.
3. Click the Decode button.
4. The decoded and formatted SAML XML request appears in the second textarea.

Deployment

Hosted on S3 + CloudFront via GitHub Actions. All infrastructure is defined in CloudFormation.

Parameters

Edit cloudformation/bootstrap.yaml before deploying:

Parameter	Default	Description
MainStackName	saml-decode	Stack name — also becomes the subdomain (saml-decode.example.com)
GitHubRepo	kallu/SAMLdecode	GitHub repo in owner/repo format
GitHubBranch	master	Branch allowed to deploy
HostedZoneId	Z33QVR4S16MSXY	Route 53 hosted zone ID

Edit cloudformation/saml-decode.yaml for the domain:

Parameter	Default	Description
HostedZoneId	Z33QVR4S16MSXY	Route 53 hosted zone ID
DomainSuffix	carriagereturn.nl	Base domain

Bootstrap (one-time)

Run once manually to create the GitHub Actions OIDC provider and deploy role:

aws cloudformation deploy \
  --stack-name saml-decode-bootstrap \
  --template-file cloudformation/bootstrap.yaml \
  --capabilities CAPABILITY_NAMED_IAM \
  --region us-east-1

After that, every push to master automatically deploys infrastructure and uploads changed static assets.

Adding/removing static assets

Edit bom.txt — the workflow will upload new files and delete removed ones from S3.

Files

• index.html: Main HTML page with embedded scripts and styles.
• jquery-3.7.1.min.js: jQuery dependency.
• uneval.js, base64.js, rawinflate.js, rawdeflate.js, formatxml.js: JavaScript libraries for URL decoding, base64 decoding, inflation/deflation etc.