thanhnvandClaude Opus 4.8
d695a598ee
- SEC-12: drift-detect adds semantic invariants — negation-flip detection (a dropped "not" now FAILS despite high char-similarity) + env must-keep patterns. - SEC-29 (X-05): governance-check audit write fails CLOSED — an unwritable audit log denies the action and empties the output (no unaudited output). - SEC-30 (X-06): approval-verify records a one-time-use nonce (sha of token/sig) and rejects replays (enforced mode / when a nonce ledger is set); dev unchanged. - SEC-15 (low): typosquat distance<=2 with the levenshtein length-sentinel bug fixed (no false positives); tool-exec fails closed with no timeout backend in enforced mode; validate-tool-input now validates nested objects/arrays recursively. Verify: new SEC suites all green via gate, run-casan4 0-FAIL, adversarial 44/44, track-c 29/0, h5-approval 12/0, no regressions. Plan-16 P2 remaining: infra-gated only (SEC-14/22/23/24/25/26). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
48 lines
1.7 KiB
Bash
Executable File
48 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
set -uo pipefail
|
|
|
|
# CASAN H4 tool-execution guard.
|
|
# Runs a command under a hard wall-clock timeout so a runaway/hung tool call
|
|
# cannot block the pipeline indefinitely. Portable (uses `timeout` if present,
|
|
# else a perl alarm) — macOS has no coreutils `timeout` by default.
|
|
#
|
|
# Scope (honest): this enforces a TIMEOUT only. True kernel sandboxing
|
|
# (namespaces/seccomp/network isolation) requires running the tool inside a
|
|
# container and is documented as a production requirement — it is NOT emulated
|
|
# here. Do not present this as full sandboxing.
|
|
#
|
|
# Usage: tool-exec.sh <timeout-seconds> -- <command...>
|
|
# Exit: command's exit code, or 124 on timeout.
|
|
|
|
TIMEOUT="${1:-${CASAN_TOOL_TIMEOUT_SECONDS:-30}}"
|
|
shift || true
|
|
if [[ "${1:-}" == "--" ]]; then shift; fi
|
|
if [[ "$#" -eq 0 ]]; then
|
|
echo "Usage: tool-exec.sh <timeout-seconds> -- <command...>" >&2
|
|
exit 64
|
|
fi
|
|
|
|
if command -v timeout >/dev/null 2>&1; then
|
|
timeout "$TIMEOUT" "$@"
|
|
rc=$?
|
|
elif command -v perl >/dev/null 2>&1; then
|
|
perl -e 'my $t=shift; $SIG{ALRM}=sub{exit 124}; alarm($t); exec @ARGV or exit 127;' "$TIMEOUT" "$@"
|
|
rc=$?
|
|
else
|
|
# SEC-15: no timeout backend. In enforced mode REFUSE (fail-closed) rather than
|
|
# run a command that could hang the pipeline; dev warns and proceeds.
|
|
if [[ "${CASAN_PROFILE:-}" == "prod" || "${CASAN_TOOL_EXEC_STRICT:-}" == "1" ]]; then
|
|
echo "TOOL_EXEC_NO_TIMEOUT_BACKEND refusing (fail-closed: install coreutils timeout or perl)" >&2
|
|
exit 2
|
|
fi
|
|
echo "TOOL_EXEC_NO_TIMEOUT_BACKEND (dev: running without timeout)" >&2
|
|
"$@"
|
|
rc=$?
|
|
fi
|
|
|
|
if [[ "$rc" -eq 124 || "$rc" -eq 142 ]]; then
|
|
echo "TOOL_EXEC_TIMEOUT after ${TIMEOUT}s" >&2
|
|
exit 124
|
|
fi
|
|
exit "$rc"
|