# Security allow-list for dangerous function calls. # Format: file:function:justification # Lines starting with # are comments. Empty lines are ignored. # Any call to a listed function in a .c file under src/ that is NOT on this # list causes the security audit (scripts/security-audit.sh) to fail. # ── Foundation: platform abstraction (defines cbm_popen wrapper + shell-free exec) ── src/foundation/compat_fs.c:popen:cbm_popen wrapper definition (POSIX) src/foundation/compat_fs.c:cbm_popen:cbm_popen function definition src/foundation/compat_fs.c:fork:cbm_exec_no_shell — fork+execvp for shell-free subprocess execution src/foundation/subprocess.c:fork:cbm_run_posix — fork+execv for the crash/hang-isolating index worker (supervisor primitive; child execs immediately, no code runs in the forked image) src/foundation/compat_fs.c:execvp:cbm_exec_no_shell — direct exec without shell interpretation # ── Coordination daemon: detached bootstrap and test-only watchdog probe ──── src/daemon/bootstrap.c:fork:validated shell-free double-fork; grandchild resets signals/umask, closes inherited descriptors, and execv's the exact current CBM image src/main.c:fork:test-only parent-death containment descendant; inert unless the private CBM_TEST_WORKER_DESCENDANT_PID_FILE probe is explicitly set # ── Coordination daemon: count-bounded local IPC (never Internet sockets) ── # Format: NETWORK:file:function:expected-count:transport:scope:justification # transport and scope are semantic policy, not documentation: the source audit # rejects entries whose exact enclosing helper and call shape do not prove the # declared local-only transport. NETWORK:src/daemon/ipc.c:socket:1:unix:local_socket_new:single owner-only AF_UNIX stream constructor NETWORK:src/daemon/ipc.c:connect:1:unix:local_socket_connect:single sockaddr_un-typed connect wrapper used only with the stable owner-only daemon endpoint NETWORK:src/main.c:socket:1:loopback-v4:main_daemon_ctl_ui_endpoint_ready:single AF_INET stream client for authenticated daemon UI readiness NETWORK:src/main.c:connect:1:loopback-v4:main_daemon_ctl_socket_connected:single sockaddr_in connect whose address is hardcoded to 127.0.0.1 and whose response must prove the daemon generation HMAC # ── Coordination daemon: count-bounded private internal file writes ──────── # Format: WRITE:file:expected-count:justification WRITE:src/main.c:3:supervised worker response path; cache-scoped hook notice marker; test-seam-only browser-open marker at the caller-supplied test path WRITE:src/daemon/application.c:1:recovery truncates only its private uniquely-created per-job marker file # ── CLI: update command (user-initiated, interactive) ────────────────────── src/cli/cli.c:cbm_popen:sha256 checksum verification (update cmd) src/cli/cli.c:popen:sha256 checksum computation via shasum # ── Watcher: git status polling (repo paths validated via cbm_validate_shell_arg) ── src/watcher/watcher.c:system:git repo detection (is_git_repo) src/watcher/watcher.c:cbm_popen:git HEAD hash (git_head) src/watcher/watcher.c:cbm_popen:git working tree status (git_is_dirty) src/watcher/watcher.c:cbm_popen:git file count (git_file_count) src/watcher/watcher.c:popen:via cbm_popen wrapper calls # ── Git context: git metadata resolution (repo paths validated via cbm_validate_shell_arg) ── src/git/git_context.c:cbm_popen:git rev-parse/symbolic-ref/merge-base metadata lookup src/git/git_context.c:popen:via cbm_popen wrapper call # ── MCP server: search and change detection ──────────────────────────────── src/mcp/mcp.c:cbm_popen:search_code via grep (pattern in temp file, path validated) src/mcp/mcp.c:cbm_popen:detect_changes via git diff (args validated) src/mcp/mcp.c:cbm_popen:git ls-files count for auto-index (session_root validated) src/mcp/mcp.c:cbm_popen:update check to api.github.com (hardcoded URL) src/mcp/mcp.c:popen:via cbm_popen wrapper calls # ── Pipeline: git history parsing (git log) ──────────────────────────────── src/pipeline/pass_githistory.c:cbm_popen:git log for file history (path validated) src/pipeline/pass_githistory.c:popen:via cbm_popen wrapper call # ── Pipeline: artifact persistence (git HEAD hash, merge driver config) ──── src/pipeline/artifact.c:cbm_popen:git rev-parse HEAD for artifact metadata (hardcoded cmd) src/pipeline/artifact.c:cbm_popen:git config merge.ours.driver for gitattributes (hardcoded cmd) src/pipeline/artifact.c:popen:via cbm_popen wrapper calls # ── UI: HTTP server process management ───────────────────────────────────── src/ui/http_server.c:popen:ps process listing for metrics endpoint src/ui/http_server.c:fork:spawn indexing subprocess src/ui/http_server.c:execl:exec indexing binary in child process # ── Allowed URLs ─────────────────────────────────────────────────────────── # Format: URL:justification URL:https://api.github.com/repos/DeusData/codebase-memory-mcp/releases/latest:update check URL:https://github.com/DeusData/codebase-memory-mcp/releases/latest/download:binary download + checksums URL:https://github.com/DeusData/codebase-memory-mcp/releases/latest:version check via redirect header URL:http://127.0.0.1:UI server binding (localhost only) URL:https://www.sqlite.org/c3ref/c_checkpoint_full.html:sqlite WAL checkpoint API doc reference (comment only, not a network call) URL:https://github.com/DeusData/codebase-memory-mcp:project repository self-reference in update/star notice (src/mcp/mcp.c) URL:https://%s:GitHub blob-URL construction in src/ui/http_server.c cbm_ui_git_web_base — https-forces the repo web base for frontend deep-links (not a network call)