mirror of
https://github.com/rustfs/rustfs.git
synced 2026-08-01 19:12:14 +00:00
Zhengchao An
2b31bda6d1
actions/checkout writes its token into .git/config as an http extraheader, where it stays for the rest of the job. That matters more here than usual: pull_request jobs run on self-hosted runners and execute the PR's own build.rs, proc-macros and tests, any of which can read that file. Test and Lint holds actions: write on top of that, so its token can cancel runs and delete the Actions caches the whole pipeline now depends on — it was given persist-credentials: false when that permission was added, and this extends the same treatment to the other 45 checkouts. Two are exempt because the token IS the credential the job needs. helm-package's publish job pushes to rustfs/helm with it; clearing it would break chart publishing. nix-flake-update is exempt pending verification: it passes FLAKE_UPDATE_TOKEN to create-pull-request directly rather than reusing .git/config, so it very likely does not need persistence, but that is unproven and a broken weekly bot is not worth the guess. Both carry a persist-credentials-exempt comment saying which. scripts/security/check_persist_credentials.sh requires every checkout to either clear its credentials or carry that comment, so the decision stays visible in review rather than being an omission nobody notices. Refs: rustfs/backlog#1598, rustfs/backlog#1602
73 lines
2.7 KiB
Bash
Executable File
73 lines
2.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Every actions/checkout must set persist-credentials: false, or carry an
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# explicit exemption comment.
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#
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# By default checkout writes its token into .git/config as an http extraheader,
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# where it stays for the rest of the job. On this repository that matters more
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# than usual: pull_request jobs run on self-hosted runners and execute the PR's
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# own build.rs, proc-macros and tests, any of which can read that file. The
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# Test and Lint job additionally holds actions: write, so its token can cancel
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# runs and delete the Actions caches the whole pipeline depends on.
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#
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# A checkout is exempt only when the token IS the credential the job needs —
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# helm-package pushes to rustfs/helm with it. Mark those with a comment
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# containing `persist-credentials-exempt` inside the step, so the decision is
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# visible in review instead of being an omission.
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#
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# Usage: scripts/security/check_persist_credentials.sh
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set -euo pipefail
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cd "$(dirname "$0")/../.."
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status=0
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for file in .github/workflows/*.yml .github/workflows/*.yaml .github/actions/*/action.yml; do
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[ -e "$file" ] || continue
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awk -v file="$file" '
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function flush() {
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if (pending && !found_pc && !found_exempt) {
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printf "%s:%d: actions/checkout without `persist-credentials: false`\n", file, checkout_line > "/dev/stderr"
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bad++
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}
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pending = 0; found_pc = 0; found_exempt = 0
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}
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{
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line = $0
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sub(/[[:space:]]+$/, "", line)
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if (line ~ /^[[:space:]]*$/) next
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match(line, /^[[:space:]]*/)
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indent = RLENGTH
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if (line ~ /uses:[[:space:]]*actions\/checkout@/) {
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flush()
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pending = 1
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# `- uses:` puts the step keys two columns right of the dash.
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checkout_indent = (line ~ /^[[:space:]]*- /) ? indent + 2 : indent
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checkout_line = NR
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next
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}
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if (!pending) next
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if (indent < checkout_indent) { flush(); next }
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if (line ~ /persist-credentials:/) found_pc = 1
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if (line ~ /persist-credentials-exempt/) found_exempt = 1
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}
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END { flush(); exit (bad > 0) }
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' "$file" || status=1
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done
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if [ "$status" -ne 0 ]; then
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echo "" >&2
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echo "Add to each checkout above:" >&2
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echo " with:" >&2
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echo " persist-credentials: false" >&2
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echo "" >&2
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echo "If the job genuinely needs the token to push, keep it and say why in a" >&2
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echo "comment containing 'persist-credentials-exempt'. See rustfs/backlog#1602." >&2
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exit 1
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fi
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echo "OK: every actions/checkout clears its credentials or is explicitly exempt"
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