Fixed installation script (#15)

Co-authored-by: Michel Casabianca <michel.casabianca@intercloud.com>

Author: c4s4

install

@@ -4,115 +4,69 @@
 #
 # $ sh -c "$(curl -L https://github.com/intercloud/gobinsec/releases/latest/download/install)"
 #
+# or (if you don't have curl installed):
+#
+# $ sh -c "$(wget -O - https://github.com/intercloud/gobinsec/releases/latest/download/install)"
 
 set -e
 
-log() {
-    echo "$@"
-}
-
-logF() {
-    echo >&2 "$@"
-    exit 1
-}
-
-repo="gobinsec"
-owner="intercloud"
-binary="${repo}"
-
-get_os() {
-    echo $(uname -s | awk '{print tolower($0)}')
-}
-
-get_arch() {
-    a=$(uname -m)
-    case ${a} in
-    "x86_64" | "amd64")
-        echo "x86_64"
-        ;;
-    "i386" | "i486" | "i586")
-        echo "i386"
-        ;;
-    *)
-        echo ${NIL}
-        ;;
-    esac
-}
-
-if [ -z "$githubUrl" ]; then
-    githubUrl="https://github.com"
-fi
-
-# parse flag
-for i in "$@"; do
-    case $i in
-    -v=* | --version=*)
-        version="${i#*=}"
-        shift
-        ;;
-    *)
-        # unknown option
-        ;;
-    esac
-done
-
-if [ -z "$version" ]; then
-    version="latest"
-fi
+NAME="gobinsec"
 
-# get OS and ARCH and build binary name
-os=$(get_os)
-arch=$(get_arch)
+# get OS and ARCH and build archive name
+os=`uname | tr '[:upper:]' '[:lower:]'`
+arch=`uname -m`
 
-log "os: ${os}"
-log "arch: ${arch}"
-log "version: ${version:-latest}"
+echo "os: ${os}"
+echo "arch: ${arch}"
 
-fileName="${binary}_${os}_${arch}.tar.gz"
+archive="${NAME}_${os}_${arch}.tar.gz"
 
 # set default installation directory
 if [ -d "/opt/local/bin" ]; then
-    executableFolder="/opt/local/bin"
+    DEFAULT_DIR="/opt/local/bin"
 elif [ -d "/opt/bin" ]; then
-    executableFolder="/opt/bin"
+    DEFAULT_DIR="/opt/bin"
 elif [ -d "/usr/local/bin" ]; then
-    executableFolder="/usr/local/bin"
+    DEFAULT_DIR="/usr/local/bin"
 elif [ -d "/usr/bin" ]; then
-    executableFolder="/usr/bin"
+    DEFAULT_DIR="/usr/bin"
 else
-    executableFolder="/bin"
+    DEFAULT_DIR="/bin"
 fi
 
-# check command availability
-command -v curl >/dev/null 2>&1 || { logF "curl is required"; }
+# select command to download archive
+if hash curl 2>/dev/null
+then
+    command="curl -L -o"
+elif hash wget 2>/dev/null
+then
+    command="wget -O"
+else
+    echo "You must install curl or wget to run this installation script"
+    exit 1
+fi
 
-# Set URI to download
-assetUri="${githubUrl}/${owner}/${repo}/releases/download/${version}/${fileName}"
-if [[ "${version}" == "latest" ]]; then
+# download archive in /tmp/${NAME}, unzip it and clean files
+${command} /tmp/${archive} https://github.com/intercloud/${NAME}/releases/latest/download/${archive}
 
-    asset=$(
-        curl -sSf ${githubUrl}/${owner}/${repo}/releases |
-            grep -o "${owner}/${repo}/releases/download/.*/${fileName}" |
-            head -n 1
-    )
+cd /tmp/
+tar -zxf $archive
+rm $archive LICENSE.txt README.md
 
-    assetUri="${githubUrl}/${asset}"
+# prompt for installation directory
+read -p "Installation directory [${DEFAULT_DIR}]? " directory
+if [ -z "$directory" ]
+then
+    directory=${DEFAULT_DIR}
 fi
 
-downloadFolder="/tmp/${binary}"
-mkdir -p ${downloadFolder}
-downloadedFile="${downloadFolder}/${fileName}"
-
-log "[1/2] Download ${assetUri}"
-curl -sS --fail --location --output "${downloadedFile}" "${assetUri}"
-
-log "[2/2] Install ${binary} to '${executableFolder}'"
-if [ -w "${directory}" ]; then
-    tar -xz -f ${downloadedFile} -C ${executableFolder}
-    chmod +x ${executableFolder}/${binary}
+# copy binary to installation directory
+if [ -w "${directory}" ]
+then
+    mv /tmp/${NAME} ${directory}
 else
-    sudo tar -xz -f ${downloadedFile} -C ${executableFolder}
-    sudo chmod +x ${executableFolder}/${binary}
+    sudo mv /tmp/${NAME} ${directory}
+    sudo chown root: ${directory}/${NAME}
 fi
 
-echo "${binary} installed in '${executableFolder}' directory"
+echo "${NAME} installed in '${directory}' directory"