ci: Use intermediate environment variables for improved security

Author: mathbunnyru

.github/actions/build-clio/action.yml

@@ -21,9 +21,11 @@ runs:
 
     - name: Build targets
       shell: bash
+      env:
+        CMAKE_TARGETS: ${{ inputs.targets }}
       run: |
         cd build
         cmake \
           --build . \
           --parallel "${{ steps.number_of_threads.outputs.threads_number }}" \
-          --target ${{ inputs.targets }}
+          --target "$CMAKE_TARGETS"

.github/actions/create-issue/action.yml

@@ -28,12 +28,17 @@ runs:
     - name: Create an issue
       id: create_issue
       shell: bash
+      env:
+        ISSUE_BODY: ${{ inputs.body }}
+        ISSUE_ASSIGNEES: ${{ inputs.assignees }}
+        ISSUE_LABELS: ${{ inputs.labels }}
+        ISSUE_TITLE: ${{ inputs.title }}
       run: |
-        echo -e '${{ inputs.body }}' > issue.md
+        echo -e "$ISSUE_BODY" > issue.md
         gh issue create \
-          --assignee '${{ inputs.assignees }}' \
-          --label '${{ inputs.labels }}' \
-          --title '${{ inputs.title }}' \
+          --assignee "$ISSUE_ASSIGNEES" \
+          --label "$ISSUE_LABELS" \
+          --title "$ISSUE_TITLE" \
           --body-file ./issue.md \
           > create_issue.log
         created_issue="$(sed 's|.*/||' create_issue.log)"

.github/actions/get-threads-number/action.yml

@@ -29,8 +29,10 @@ runs:
     - name: Shift and export number of threads
       id: number_of_threads_export
       shell: bash
+      env:
+        SUBTRACT_THREADS: ${{ inputs.subtract_threads }}
       run: |
         num_of_threads="${{ steps.mac_threads.outputs.num || steps.linux_threads.outputs.num }}"
-        shift_by="${{ inputs.subtract_threads }}"
+        shift_by="$SUBTRACT_THREADS"
         shifted="$((num_of_threads - shift_by))"
         echo "num=$(( shifted > 1 ? shifted : 1 ))" >> $GITHUB_OUTPUT

.github/workflows/build-clio-docker-image.yml

@@ -56,9 +56,12 @@ jobs:
       - name: Download Clio binary from url
         if: ${{ inputs.clio_server_binary_url != null }}
         shell: bash
+        env:
+          BINARY_URL: ${{ inputs.clio_server_binary_url }}
+          BINARY_SHA256: ${{ inputs.binary_sha256 }}
         run: |
-          wget "${{inputs.clio_server_binary_url}}" -P ./docker/clio/artifact/
-          if [ "$(sha256sum ./docker/clio/clio_server | awk '{print $1}')" != "${{inputs.binary_sha256}}" ]; then
+          wget "$BINARY_URL" -P ./docker/clio/artifact/
+          if [ "$(sha256sum ./docker/clio/clio_server | awk '{print $1}')" != "$BINARY_SHA256" ]; then
             echo "Binary sha256 sum doesn't match"
             exit 1
           fi

.github/workflows/check-pr-title.yml

@@ -17,8 +17,10 @@ jobs:
           custom_labels: '{"build":"build", "feat":"enhancement", "fix":"bug", "docs":"documentation", "test":"testability", "ci":"ci", "style":"refactoring", "refactor":"refactoring", "perf":"performance", "chore":"tooling"}'
 
       - name: Check if message starts with upper-case letter
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
         run: |
-          if [[ ! "${{ github.event.pull_request.title }}" =~ ^[a-z]+:\ [\[A-Z] ]]; then
+          if [[ ! "$PR_TITLE" =~ ^[a-z]+:\ [\[A-Z] ]]; then
             echo "Error: PR title must start with an upper-case letter."
             exit 1
           fi

.github/workflows/reusable-build.yml

@@ -221,9 +221,11 @@ jobs:
       - name: Verify expected version
         if: ${{ inputs.expected_version != '' }}
         shell: bash
+        env:
+          INPUT_EXPECTED_VERSION: ${{ inputs.expected_version }}
         run: |
           set -e
-          EXPECTED_VERSION="clio-${{ inputs.expected_version }}"
+          EXPECTED_VERSION="clio-$INPUT_EXPECTED_VERSION"
           actual_version=$(./build/clio_server --version)
           if [[ "$actual_version" != "$EXPECTED_VERSION" ]]; then
             echo "Expected version '$EXPECTED_VERSION', but got '$actual_version'"

.github/workflows/reusable-release.yml

@@ -67,10 +67,12 @@ jobs:
 
       - name: Create release notes
         shell: bash
+        env:
+          RELEASE_HEADER: ${{ inputs.header }}
         run: |
           echo "# Release notes" > "${RUNNER_TEMP}/release_notes.md"
           echo "" >> "${RUNNER_TEMP}/release_notes.md"
-          printf '%s\n' "${{ inputs.header }}" >> "${RUNNER_TEMP}/release_notes.md"
+          printf '%s\n' "$RELEASE_HEADER" >> "${RUNNER_TEMP}/release_notes.md"
 
       - name: Generate changelog
         shell: bash
@@ -95,18 +97,25 @@ jobs:
       - name: Remove current release and tag
         if: ${{ github.event_name != 'pull_request' && inputs.overwrite_release }}
         shell: bash
+        env:
+          RELEASE_VERSION: ${{ inputs.version }}
         run: |
-          gh release delete ${{ inputs.version }} --yes || true
-          git push origin :${{ inputs.version }} || true
+          gh release delete "$RELEASE_VERSION" --yes || true
+          git push origin :"$RELEASE_VERSION" || true
 
       - name: Publish release
         if: ${{ github.event_name != 'pull_request' }}
         shell: bash
+        env:
+          RELEASE_VERSION: ${{ inputs.version }}
+          PRERELEASE_OPTION: ${{ inputs.prerelease && '--prerelease' || '' }}
+          RELEASE_TITLE: ${{ inputs.title }}
+          DRAFT_OPTION: ${{ inputs.draft && '--draft' || '' }}
         run: |
-          gh release create "${{ inputs.version }}" \
-            ${{ inputs.prerelease && '--prerelease' || '' }} \
-            --title "${{ inputs.title }}" \
+          gh release create "$RELEASE_VERSION" \
+            $PRERELEASE_OPTION \
+            --title "$RELEASE_TITLE" \
             --target "${GITHUB_SHA}" \
-            ${{ inputs.draft && '--draft' || '' }} \
+            $DRAFT_OPTION \
             --notes-file "${RUNNER_TEMP}/release_notes.md" \
             ./release_artifacts/clio_server*

.github/workflows/upload-conan-deps.yml

@@ -99,4 +99,6 @@ jobs:
 
       - name: Upload Conan packages
         if: ${{ github.repository_owner == 'XRPLF' && github.event_name != 'pull_request' && github.event_name != 'schedule' }}
-        run: conan upload "*" -r=xrplf --confirm ${{ github.event.inputs.force_upload == 'true' && '--force' || '' }}
+        env:
+          FORCE_OPTION: ${{ github.event.inputs.force_upload == 'true' && '--force' || '' }}
+        run: conan upload "*" -r=xrplf --confirm "$FORCE_OPTION"