Semgrep.yml

# Name of this GitHub Actions workflow.
name: Semgrep

on:
  # Scan changed files in PRs (diff-aware scanning):
  # The branches below must be a subset of the branches above
  pull_request:
    branches: ["master", "main"]
  push:
    branches: ["master", "main"]
  schedule:
    - cron: '0 6 * * *'


permissions:
  contents: read

jobs:
  semgrep:
    # User definable name of this GitHub Actions job.
    permissions:
      contents: read  # for actions/checkout to fetch code
      security-events: write  # for github/codeql-action/upload-sarif to upload SARIF results
    name: semgrep/ci 
    # If you are self-hosting, change the following `runs-on` value: 
    runs-on: ubuntu-latest

    container:
      # Pinned by digest for supply-chain integrity (DEVA11Y-476).
      # To update: docker manifest inspect returntocorp/semgrep:latest
      image: returntocorp/semgrep@sha256:f1f7b71861c7b28b6e0f661225a2c4f58a484f5d0f182465c6d6b3b22f972ade


    steps:
      # Fetch project source with GitHub Actions Checkout.
      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
      # Run the "semgrep ci" command on the command line of the docker image.
      - run: semgrep ci --sarif --output=semgrep.sarif
        env:
            # Add the rules that Semgrep uses by setting the SEMGREP_RULES environment variable. 
            SEMGREP_RULES: p/default # more at semgrep.dev/explore

      - name: Upload SARIF file for GitHub Advanced Security Dashboard
        uses: github/codeql-action/upload-sarif@6c089f53dd51dc3fc7e599c3cb5356453a52ca9e # v2.20.0
        with:
          sarif_file: semgrep.sarif
        # SARIF upload needs security-events: write, which Dependabot-triggered runs
        # do not get; skip only this privileged step for dependabot so the scan itself
        # still runs on Dependabot PRs (which bump the action pins that live in this
        # very workflow). always() keeps upload on non-dependabot runs even if the scan
        # step reports findings.
        if: always() && github.actor != 'dependabot[bot]'