Merge pull request libgit2#6342 from libgit2/ethomson/actions_limits

CI: limits actions scheduled workflows to the main repo

Author: ethomson

.github/workflows/benchmark.yml

@@ -11,6 +11,10 @@ jobs:
   # targets and their details.  Then we build either in a docker container
   # (Linux) or on the actual hosts (macOS, Windows).
   build:
+    # Only run scheduled workflows on the main repository; prevents people
+    # from using build minutes on their forks.
+    if: github.repository == 'libgit2/libgit2'
+
     strategy:
       matrix:
         platform:

.github/workflows/codeql.yml

@@ -15,6 +15,10 @@ jobs:
   # targets and their details.  Then we build either in a docker container
   # (Linux) or on the actual hosts (macOS, Windows).
   build:
+    # Only run scheduled workflows on the main repository; prevents people
+    # from using build minutes on their forks.
+    if: github.repository == 'libgit2/libgit2'
+
     strategy:
       matrix:
         platform:
@@ -321,6 +325,10 @@ jobs:
       shell: bash
 
   coverity:
+    # Only run scheduled workflows on the main repository; prevents people
+    # from using build minutes on their forks.
+    if: github.repository == 'libgit2/libgit2'
+
     name: Coverity
     runs-on: ubuntu-latest
     steps:
@@ -340,3 +348,32 @@ jobs:
       run: source/ci/coverity.sh
       env:
         COVERITY_TOKEN: ${{ secrets.coverity_token }}
+
+  codeql:
+    # Only run scheduled workflows on the main repository; prevents people
+    # from using build minutes on their forks.
+    if: github.repository == 'libgit2/libgit2'
+
+    name: CodeQL
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: 'cpp'
+
+    - name: Build
+      run: |
+        mkdir build
+        cd build
+        cmake .. -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
+        cmake --build .
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1