Harden GitHub workflows (#493)

Author: samdark

.github/workflows/bc.yml

@@ -13,6 +13,9 @@ on:
 
 name: backwards compatibility
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true

.github/workflows/composer-require-checker.yml

@@ -16,6 +16,9 @@ on:
 
 name: Composer require checker
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true

.github/workflows/mutation.yml

@@ -14,6 +14,9 @@ on:
 
 name: mutation test
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
@@ -38,7 +41,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:17
+        image: postgres:17 # zizmor: ignore[unpinned-images]
         env:
           POSTGRES_USER: root
           POSTGRES_PASSWORD: root
@@ -49,18 +52,20 @@ jobs:
 
     steps:
       - name: Checkout.
-        uses: actions/checkout@v7
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+        with:
+          persist-credentials: false
 
       - name: Install PHP with extensions.
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@b604ade2a87db23f8871b7182e69ec5e75effb45
         with:
           php-version: ${{ matrix.php }}
           extensions: ${{ env.EXTENSIONS }}
           ini-values: memory_limit=-1
           coverage: pcov
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v4
+        uses: ramsey/composer-install@a8d0d959dab41457692a5e2041bd9b757a119e3f
 
       - name: Install db.
         uses: yiisoft/actions/install-packages@master

.github/workflows/rector-cs.yml

@@ -11,14 +11,16 @@ on:
       - '.php-cs-fixer.dist.php'
 
 permissions:
-  contents: write
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
   rector:
+    permissions:
+      contents: write # Required to commit automated Rector and CS fixes.
     uses: yiisoft/actions/.github/workflows/rector-cs.yml@master
     with:
       php: '8.1'

.github/workflows/static.yml

@@ -16,6 +16,9 @@ on:
 
 name: Static analysis
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true

.github/workflows/zizmor.yml

@@ -0,0 +1,18 @@
+name: GitHub Actions Security Analysis with zizmor 🌈
+
+on:
+  push:
+    paths:
+      - '.github/**.yml'
+      - '.github/**.yaml'
+  pull_request:
+    paths:
+      - '.github/**.yml'
+      - '.github/**.yaml'
+
+permissions:
+  contents: read
+
+jobs:
+  zizmor:
+    uses: yiisoft/actions/.github/workflows/zizmor.yml@master

.github/zizmor.yml

@@ -0,0 +1,5 @@
+rules:
+  unpinned-uses:
+    config:
+      policies:
+        "yiisoft/*": any