65 lines
2.5 KiB
Bash
65 lines
2.5 KiB
Bash
|
#!/usr/bin/env bash
|
||
|
|
# Secret scan for staged files.
|
||
|
|
#
|
||
|
|
# Pre-commit hook calls this against staged additions. Fast (no external
|
||
|
|
# tool; just regex over the staged diff). Designed to catch the common
|
||
|
|
# accidents — API keys committed alongside code — not to replace a full
|
||
|
|
# secret-scanning service.
|
||
|
|
#
|
||
|
|
# Exits non-zero with a clear message if a likely secret is found.
|
||
|
|
|
||
|
|
set -euo pipefail
|
||
|
|
|
||
|
|
# Only scan added/modified content (the `+` lines in the staged diff).
|
||
|
|
# This avoids false positives from existing committed strings.
|
||
|
|
STAGED_DIFF=$(git diff --cached --diff-filter=ACMR --unified=0 -- '*.ts' '*.tsx' '*.js' '*.jsx' '*.json' '*.yml' '*.yaml' '*.toml' '*.env*' '*.sh' '*.md' 2>/dev/null || true)
|
||
|
|
|
||
|
|
if [ -z "$STAGED_DIFF" ]; then
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Only look at added lines (starting with `+`, excluding diff headers `+++`).
|
||
|
|
ADDED=$(printf '%s\n' "$STAGED_DIFF" | grep -E '^\+[^+]' || true)
|
||
|
|
|
||
|
|
if [ -z "$ADDED" ]; then
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
FOUND=0
|
||
|
|
FINDINGS=""
|
||
|
|
|
||
|
|
check_pattern() {
|
||
|
|
local name="$1"
|
||
|
|
local pattern="$2"
|
||
|
|
# Use `-e` to safely pass patterns that begin with `-` (e.g. PEM headers).
|
||
|
|
if printf '%s\n' "$ADDED" | grep -qE -e "$pattern"; then
|
||
|
|
FOUND=1
|
||
|
|
FINDINGS="${FINDINGS} - ${name}\n"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
check_pattern "AWS access key" 'AKIA[0-9A-Z]{16}'
|
||
|
|
check_pattern "AWS secret key (high-entropy)" 'aws_secret_access_key[[:space:]]*[:=][[:space:]]*[A-Za-z0-9/+=]{40}'
|
||
|
|
check_pattern "Anthropic API key" 'sk-ant-[a-zA-Z0-9_-]{32,}'
|
||
|
|
check_pattern "OpenAI API key" 'sk-[a-zA-Z0-9]{20,}T3BlbkFJ[a-zA-Z0-9]{20,}'
|
||
|
|
check_pattern "OpenAI project key (newer)" 'sk-proj-[a-zA-Z0-9_-]{40,}'
|
||
|
|
check_pattern "GitHub personal access token" 'gh[psoru]_[A-Za-z0-9_]{36,}'
|
||
|
|
check_pattern "GitHub fine-grained PAT" 'github_pat_[A-Za-z0-9_]{82,}'
|
||
|
|
check_pattern "Slack token" 'xox[abprs]-[A-Za-z0-9-]{10,}'
|
||
|
|
check_pattern "Google API key" 'AIza[0-9A-Za-z_-]{35}'
|
||
|
|
check_pattern "Stripe live key" 'sk_live_[A-Za-z0-9]{24,}'
|
||
|
|
check_pattern "Honcho-style JWT (likely)" 'eyJ[A-Za-z0-9_-]{20,}\.eyJ[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]{20,}'
|
||
|
|
check_pattern "RSA/EC/DSA/OpenSSH private key block" '-----BEGIN (RSA |EC |DSA |OPENSSH )?PRIVATE KEY-----'
|
||
|
|
check_pattern "Generic hardcoded password" '(password|passwd|pwd)[[:space:]]*[:=][[:space:]]*["'\'']\w{8,}["'\'']'
|
||
|
|
|
||
|
|
if [ $FOUND -eq 1 ]; then
|
||
|
|
printf '\n\033[31m✗ Secret scan: potential secrets in staged changes\033[0m\n' >&2
|
||
|
|
printf '%b' "$FINDINGS" >&2
|
||
|
|
printf '\n' >&2
|
||
|
|
printf 'If this is a false positive, bypass with: \033[33mgit commit --no-verify\033[0m\n' >&2
|
||
|
|
printf 'Otherwise: remove the secret, rotate the credential, and re-stage.\n\n' >&2
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
exit 0
|