yaml.semgrep.duplicate-pattern.duplicate-pattern

profile photo of returntocorpreturntocorp
Author
672
Download Count*
LGPL Commons Clause
License

Two identical pattern clauses were detected. This will cause Semgrep to run the same pattern twice. Remove one of the duplicate pattern clauses.

Run Locally

Run in CI

Semgrep CI docs

Defintion

Edit RuleView Source
Open in Playground 
rules:
  - id: duplicate-pattern
    message: Two identical pattern clauses were detected. This will cause Semgrep to
      run the same pattern twice. Remove one of the duplicate pattern clauses.
    severity: ERROR
    languages:
      - yaml
    patterns:
      - pattern-inside: "rules: [..., $RULE, ...]"
      - pattern-inside: |
          - pattern: $X
          ...
          - pattern: $X
          ...
      - pattern: |
          pattern: $X
    metadata:
      category: correctness
      technology:
        - semgrep
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]

Examples

duplicate-pattern.test.yaml

rules:
  - id: unchecked-subprocess-call
    patterns:
      - pattern-either:
          # ruleid: duplicate-pattern
          - pattern: |
              subprocess.call(...)
            # ruleid: duplicate-pattern
          - pattern: |
              subprocess.call(...)
      - pattern-not-inside: |
          $S = subprocess.call(...)
      - pattern-not-inside: |
          subprocess.call(...) == $X
    message: >-
      This is not checking the return value of this subprocess call; if it fails no exception will be raised. Consider subprocess.check_call() instead
    severity: WARNING
    fix: subprocess.check_call(...)