CodeQL: Add syntax checking for php and lua

.github/workflows/codeql-analysis.yml

@@ -94,3 +94,85 @@ jobs:
 
     - name: Perform CodeQL Analysis
       uses: github/codeql-action/analyze@v2
+
+
+  #
+  # Syntax checking
+  #
+  analyze-php:
+    name: Analyze (php)
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@main
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    - name: Check PHP syntax errors
+      uses: overtrue/phplint@main
+      with:
+        path: server/statuspage/
+        options: --exclude=vendor
+
+  analyze-lua:
+    name: Analyze (lua)
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@main
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    - name: Setup programs
+      run: |
+        sudo apt-get -y install lua5.1 luajit lua-check
+
+    #- name: Check LUA syntax errors
+    #  run: |
+    #    find . -name '*.lua' -print  > luacheck.list
+    #    while read file; do echo "LuaLintCheck: $file"; luac -p "$file"; done <luacheck.list
+
+    # We need to do it a little more complicated, because we need to intercept RC=1 (only warnings appeared).
+    # I don't want the workflow to "fail" just because of syntax warnings.
+    - name: Check LUA syntax errors
+      # invoke luacheck, but make the run-action return only with errors, not with warnings
+      continue-on-error: true
+      run: |
+        luacheck .
+        echo "luacheck_r=$?" >> $GITHUB_OUTPUT
+    - name: Evaluate luacheck return code
+      run: |
+        luacheck_r=${{ steps.generate_number.outputs.random_number }}
+        echo "luacheck returned RC=$luacheck_r"
+        [[ $luacheck_r -gt 1 ]] && exit 1
+    
+    # For andymckay/labeler see https://github.com/marketplace/actions/simple-issue-labeler
+    #- name: Luacheck
+    #  id: luacheck_step_id
+    #  uses: lunarmodules/[email protected]
+    #  continue-on-error: true
+    #- name: Evalu
+    #- name: label when luacheck_step_id fails
+    #  if: ${{ steps.luacheck_step_id.outcome == 'failure' }}
+    #  uses: andymckay/[email protected]
+    #  with:
+    #    add-labels: "commit-message-rule-violation"
+    #- name: label removal when luacheck_step_id succeeds
+    #  if: ${{ steps.luacheck_step_id.outcome == 'success' }}
+    #  uses: andymckay/[email protected]
+    #  with:
+    #    remove-labels: "commit-message-rule-violation"
+
+    #- name: Check LUA syntax errors
+    #  # invoke luacheck, but make the run-action return only with errors, not with warnings
+    #  run: |
+    #    luacheck .; echo -n "$?" >luacheck.rc
+    #    luacheck_r=$(cat luacheck.rc)
+    #    echo "luacheck returned RC=$luacheck_r"
+    #    expr $luacheck_r \> 1;