Files
CASAN/AINative_OKR_CASAN5/packages/casan-harness/scripts/bash/tool-output-scan.sh
T
thanhnvandClaude Opus 4.8 664bd1f00c feat(plan-01): Phase 1 — relocate harness code to packages/casan-harness (symlink facade)
Physically move the pure-code subtrees out of .specify into the package, leaving
compat symlinks at the old .specify/<dir> paths so every existing reference (internal
CASAN_HARNESS_ROOT + external CI/docker/mjs) keeps resolving. Runtime state stays put.

Moved (git mv): scripts/ tests/ security/ templates/ config/ governance/ memory/
  .specify/<dir>  ->  packages/casan-harness/<dir>   (+ .specify/<dir> symlink)
Stays in .specify (state/governance/domain, handled later): logs/ agentops/ level5/
  init-options.json traceability-map.json

Python `.resolve()` self-location followed the compat symlink into packages and lost
the app root; generate-casan-demo-context.py, generate-agentops-dashboard.py and
dashboard-server.py now walk UP for the `.specify` state marker instead of a fixed
parent depth (fixes "missing trace files" in run-casan4).

Full gate: PASS=64 FAIL=0 SKIP=3 (CASAN_CI_STEP_TIMEOUT_SEC=1200 — track-a ~450s runs
close to the 600s default and can tip over under load; this is timing variance, not a
regression — it passed cleanly with headroom). Runtime log/audit artifacts kept unstaged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-08 00:06:00 +09:00

53 lines
2.0 KiB
Bash
Executable File

#!/usr/bin/env bash
set -uo pipefail
# CASAN H4 — Tool-output indirect-injection scanner (Track A, V7).
#
# A tool (shell command, file read, web fetch, sub-agent) can return content
# that is then fed back into a downstream model's context. If that content
# carries a prompt injection, the model can be hijacked even though the ORIGINAL
# user input was clean. This scans a tool-output file the same way an untrusted
# artifact is scanned, BEFORE the output is allowed to re-enter model context.
#
# It reuses security-check.sh in `input` mode (block-pattern + unicode/encoding
# normalization + secret detection) but forces the semantic/strict model path
# OFF so the scan is deterministic and needs no model backend — this is a
# pattern scan of machine output, not a user-intent classification.
#
# Usage:
# tool-output-scan.sh <tool-output-file> [context-label]
# Exit:
# 0 — safe to reuse
# 2 — injection / secret pattern detected (caller should reject/quarantine)
# 64 — usage error (file missing)
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
OUTPUT_FILE="${1:-}"
LABEL="${2:-unknown-tool}"
if [[ -z "$OUTPUT_FILE" || ! -f "$OUTPUT_FILE" ]]; then
echo "Usage: tool-output-scan.sh <tool-output-file> [context-label]" >&2
exit 64
fi
WORK="$(mktemp -d)"; trap 'rm -rf "$WORK"' EXIT
SCAN_OUT="$WORK/tool-output-scan.txt"
TIMESTAMP="$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
# Deterministic pattern scan: semantic + strict explicitly disabled here so a
# tool-output scan never depends on (or is blocked by) model availability.
CASAN_SECURITY_STRICT=0 CASAN_SEMANTIC_CLASSIFY=0 \
bash "$SCRIPT_DIR/security-check.sh" "$OUTPUT_FILE" "$SCAN_OUT" input >/dev/null 2>&1
SC_RC=$?
if [[ "$SC_RC" -eq 2 ]]; then
echo "TOOL_OUTPUT_SCAN_BLOCKED label=$LABEL file=$OUTPUT_FILE reason=injection_or_secret timestamp=$TIMESTAMP"
exit 2
elif [[ "$SC_RC" -ne 0 ]]; then
echo "TOOL_OUTPUT_SCAN_ERROR label=$LABEL rc=$SC_RC" >&2
exit 2 # fail closed on scan error
fi
echo "TOOL_OUTPUT_SCAN_CLEAN label=$LABEL file=$OUTPUT_FILE timestamp=$TIMESTAMP"
exit 0