[StepSecurity] Apply security best practices

.github/dependabot.yml

@@ -16,3 +16,48 @@ updates:
       llvm-docs-requirements:
         patterns:
           - "*"
+
+  - package-ecosystem: docker
+    directory: /.github/workflows/containers/github-action-ci
+    schedule:
+      interval: daily
+
+  - package-ecosystem: docker
+    directory: /bolt/utils/docker
+    schedule:
+      interval: daily
+
+  - package-ecosystem: nuget
+    directory: /clang/tools/clang-format-vs/ClangFormat
+    schedule:
+      interval: daily
+
+  - package-ecosystem: docker
+    directory: /clang/tools/clang-fuzzer
+    schedule:
+      interval: daily
+
+  - package-ecosystem: docker
+    directory: /clang/utils/analyzer
+    schedule:
+      interval: daily
+
+  - package-ecosystem: pip
+    directory: /clang/utils/analyzer
+    schedule:
+      interval: daily
+
+  - package-ecosystem: pip
+    directory: /flang/examples/FlangOmpReport
+    schedule:
+      interval: daily
+
+  - package-ecosystem: docker
+    directory: /libc/utils/buildbot
+    schedule:
+      interval: daily
+
+  - package-ecosystem: docker
+    directory: /libcxx/utils/ci
+    schedule:
+      interval: daily

.github/workflows/build-ci-container.yml

@@ -25,6 +25,11 @@ jobs:
     permissions:
       packages: write
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Write Variables
         id: vars
         run: |
@@ -34,7 +39,7 @@ jobs:
           echo "container-name-tag=$container_name:$tag" >> $GITHUB_OUTPUT
 
       - name: Checkout LLVM
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           sparse-checkout: .github/workflows/containers/github-action-ci/
 

.github/workflows/codeql.yml

@@ -0,0 +1,78 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["npu/release/18.x"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["npu/release/18.x"]
+  schedule:
+    - cron: "0 0 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["cpp", "csharp", "javascript", "python", "typescript"]
+        # CodeQL supports [ $supported-codeql-languages ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
+      - name: Checkout repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@662472033e021d55d94146f66f6058822b0b39fd # v3.27.0
+        with:
+          languages: ${{ matrix.language }}
+          # If you wish to specify custom queries, you can do so here or in a config file.
+          # By default, queries listed here will override any specified in a config file.
+          # Prefix the list here with "+" to use these queries and those in the config file.
+
+      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below)
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@662472033e021d55d94146f66f6058822b0b39fd # v3.27.0
+
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+      #   If the Autobuild fails above, remove it and uncomment the following three lines.
+      #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+      # - run: |
+      #   echo "Run, Build Application using script"
+      #   ./location_of_script_within_repo/buildscript.sh
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@662472033e021d55d94146f66f6058822b0b39fd # v3.27.0
+        with:
+          category: "/language:${{matrix.language}}"

.github/workflows/containers/github-action-ci/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/library/ubuntu:22.04 as base
+FROM docker.io/library/ubuntu:22.04@sha256:0e5e4a57c2499249aafc3b40fcd541e9a456aab7296681a3994d631587203f97 as base
 ENV LLVM_SYSROOT=/opt/llvm/
 
 FROM base as toolchain

.github/workflows/dependency-review.yml

@@ -0,0 +1,27 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@4081bf99e2866ebe428fc0477b69eb4fcda7220a # v4.4.0

.github/workflows/docs.yml

@@ -56,14 +56,19 @@ jobs:
       # action to use the Github API in pull requests. If it's a push to a
       # branch we can't use the Github API to get the diff, so we need to have
       # a local checkout beforehand.
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Fetch LLVM sources (Push)
         if: ${{ github.event_name == 'push' }}
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           fetch-depth: 1
       - name: Get subprojects that have doc changes
         id: docs-changed-subprojects
-        uses: tj-actions/changed-files@v45
+        uses: tj-actions/changed-files@c3a1bb2c992d77180ae65be6ae6c166cf40f857c # v45.0.3
         with:
           files_yaml: |
             llvm:
@@ -94,11 +99,11 @@ jobs:
               - 'flang/include/flang/Optimizer/Dialect/FIROps.td'
       - name: Fetch LLVM sources (PR)
         if: ${{ github.event_name == 'pull_request' }}
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           fetch-depth: 1
       - name: Setup Python env
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
         with:
           python-version: '3.11'
           cache: 'pip'

.github/workflows/issue-release-workflow.yml

@@ -38,8 +38,13 @@ jobs:
       !startswith(github.event.comment.body, '<!--IGNORE-->') &&
       contains(github.event.action == 'opened' && github.event.issue.body || github.event.comment.body, '/cherry-pick')
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           repository: llvm/llvm-project
           # GitHub stores the token used for checkout and uses it for pushes
@@ -73,8 +78,13 @@ jobs:
       contains(github.event.comment.body, '/branch ')
 
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           persist-credentials: false
 

.github/workflows/issue-subscriber.yml

@@ -13,8 +13,13 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'llvm/llvm-project'
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Checkout Automation Script
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           sparse-checkout: llvm/utils/git/
           ref: main

.github/workflows/libclang-abi-tests.yml

@@ -37,14 +37,19 @@ jobs:
       LLVM_VERSION_MINOR: ${{ steps.version.outputs.LLVM_VERSION_MINOR }}
       LLVM_VERSION_PATCH: ${{ steps.version.outputs.LLVM_VERSION_PATCH }}
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Checkout source
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           fetch-depth: 250
 
       - name: Get LLVM version
         id: version
-        uses: llvm/actions/get-llvm-version@main
+        uses: llvm/actions/get-llvm-version@a1ea791b03c8e61f53a0e66f2f73db283aa0f01e # main
 
       - name: Setup Variables
         id: vars
@@ -99,8 +104,13 @@ jobs:
             ref: ${{ github.sha }}
             repo: ${{ github.repository }}
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Install Ninja
-        uses: llvm/actions/install-ninja@main
+        uses: llvm/actions/install-ninja@a1ea791b03c8e61f53a0e66f2f73db283aa0f01e # main
       - name: Install abi-compliance-checker
         run: |
           sudo apt-get install abi-dumper autoconf pkg-config
@@ -112,7 +122,7 @@ jobs:
           ./configure
           sudo make install
       - name: Download source code
-        uses: llvm/actions/get-llvm-project-src@main
+        uses: llvm/actions/get-llvm-project-src@a1ea791b03c8e61f53a0e66f2f73db283aa0f01e # main
         with:
           ref: ${{ matrix.ref }}
           repo: ${{ matrix.repo }}
@@ -130,7 +140,7 @@ jobs:
             sed -i 's/LLVM_[0-9]\+/LLVM_NOVERSION/' $lib-${{ matrix.ref }}.abi
           done
       - name: Upload ABI file
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
           name: ${{ matrix.name }}
           path: '*${{ matrix.ref }}.abi'
@@ -142,13 +152,18 @@ jobs:
       - abi-dump-setup
       - abi-dump
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+        with:
+          egress-policy: audit
+
       - name: Download baseline
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
         with:
           name: build-baseline
           path: build-baseline
       - name: Download latest
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
         with:
           name: build-latest
           path: build-latest
@@ -162,7 +177,7 @@ jobs:
           done
       - name: Upload ABI Comparison
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
           name: compat-report-${{ github.sha }}
           path: compat_reports/