thanhnvandClaude Opus 4.8
e70f0815ab
- SEC-08 pii-mask: fail-closed on missing rules / broken regex (no unmasked leak) - SEC-09: input-size cap + fail-closed reads (security-check/drift-detect/context-compress); non-UTF8 no longer crashes - SEC-19: control-plane store POSIX flock + atomic tmp+rename write - SEC-20: new toolchain-verify.sh (missing/PATH-shadowed/in-workspace binary -> refuse); wired into harness-preflight - SEC-21: model-call timeout 180->60s configurable + per-run call budget - SEC-11 realized by SEC-17 prod profile (no code) - 5 fail-able test suites wired into ci-harness-gate.sh; test-integrity manifest regenerated Verify: SEC+integrity gate 16/0, run-casan4 0-FAIL, adversarial 44/44, no regressions. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
65 lines
2.2 KiB
Bash
65 lines
2.2 KiB
Bash
#!/usr/bin/env bash
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set -uo pipefail
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# CASAN Plan-16 SEC-20 (ARCH-04 / ARCH-09) — verify the required toolchain.
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#
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# Gate verdicts depend on external binaries (python/openssl/grep/sha256sum...). If
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# one is MISSING the control can silently no-op (ARCH-09); if one is PATH-SHADOWED
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# by an attacker-planted copy (ARCH-04, e.g. a fake `grep` that always matches
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# nothing) the attacker controls the verdict. This fails CLOSED:
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# * a required tool that is not found -> refuse,
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# * a tool resolving INSIDE the workspace / cwd -> refuse (planted binary),
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# * with CASAN_TOOLCHAIN_TRUSTED_DIRS set, a tool outside those dirs -> refuse.
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#
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# Usage: toolchain-verify.sh [tool ...] (default: python3 openssl grep awk sed)
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# Env: CASAN_TOOLCHAIN_TRUSTED_DIRS=/usr/bin:/bin:... (opt-in allowlist; prod sets it)
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# Exit: 0 ok, 1 missing/shadowed/untrusted.
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"
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REQUIRED=("$@")
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if [[ ${#REQUIRED[@]} -eq 0 ]]; then
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REQUIRED=(python3 openssl grep awk sed)
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fi
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IFS=':' read -r -a TRUSTED <<< "${CASAN_TOOLCHAIN_TRUSTED_DIRS:-}"
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fail=0
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for tool in "${REQUIRED[@]}"; do
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path="$(command -v "$tool" 2>/dev/null || true)"
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if [[ -z "$path" ]]; then
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echo "TOOLCHAIN_MISSING tool=$tool (fail-closed)" >&2
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fail=1; continue
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fi
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# Resolve to a real, absolute path (follow the symlink dir).
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dir="$(cd "$(dirname "$path")" 2>/dev/null && pwd -P || echo "")"
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real="$dir/$(basename "$path")"
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# A required tool resolving inside the repo / cwd is a planted-binary red flag.
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case "$real" in
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"$PROJECT_ROOT"/*|"$PWD"/*|./*)
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echo "TOOLCHAIN_SHADOWED tool=$tool path=$real (fail-closed)" >&2
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fail=1; continue ;;
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esac
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# Opt-in allowlist: in prod the tool MUST live under a trusted system dir.
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if [[ -n "${CASAN_TOOLCHAIN_TRUSTED_DIRS:-}" ]]; then
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ok=0
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for pfx in "${TRUSTED[@]}"; do
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[[ -n "$pfx" ]] || continue
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case "$real" in "$pfx"/*) ok=1; break ;; esac
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done
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if [[ "$ok" -ne 1 ]]; then
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echo "TOOLCHAIN_UNTRUSTED_PATH tool=$tool path=$real (not under CASAN_TOOLCHAIN_TRUSTED_DIRS)" >&2
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fail=1
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fi
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fi
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done
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if [[ "$fail" -eq 0 ]]; then
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echo "TOOLCHAIN_OK tools=${#REQUIRED[@]}"
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exit 0
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fi
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exit 1
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