.semgrep.all.yaml

rules:

- id: ban-system-time-now
  languages:
    - rust
  message: Use fedimint_core::time::now instead of std::time::SystemTime::now for better wasm compatibility.
  pattern: std::time::SystemTime::now

  severity: WARNING

- id: ban-instant-now
  languages:
    - rust
  message: Use fedimint_core::time::now instead of Instant::now for better wasm compatibility. ATM. there's no good Instant replacement for WASM, so we need to resort to SystemTime.
  
  pattern-either:
    - pattern: std::time::Instant::now
    - pattern: tokio::time::Instant::now

  severity: WARNING
  paths:
    exclude:
      # doesn't run in wasm
      - devimint/
      # server only
      - fedimint-server/
      # being phased out
      - fedimint-client-legacy/

- id: ban-fs-write
  languages:
    - rust
  message: Overwriting existing files is rarely a good idea. Use fedimint-core::util::write_overwrite if you are really sure you want to overwrite existing data or `fedimint-core::util::write_overwrite::write_new` if you don't. Alternatively use `fs::File::options` and express intention explicitly.
  pattern-either:
    - pattern: tokio::fs::write
    - pattern: std::fs::write
  severity: WARNING

- id: ban-file-create
  languages:
    - rust
  message: Overwriting existing files is rarely a good idea. `fs::File::options` and express intention explicitly.
  pattern-either:
    - pattern: std::fs::File::create
    - pattern: tokio::fs::File::create
  severity: WARNING

- id: ban-tokio-sleep
  languages:
    - rust
  message: "`tokio::time::sleep` doesn't work in WASM. Use `fedimint_core::task::sleep` instead."
  pattern: tokio::time::sleep
  severity: WARNING