Files
CASAN/packages/casan-devkit/casan-init.py
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1949 lines
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Python
Executable File

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""`casan init` / `casan verify-harness` (Plan-21 production adoption).
Adopt CASAN into an EXISTING project using an explicit runtime contract:
managed mode pins the shared Core under $CASAN_HOME; vendored mode installs the
same production-only Core under `.casan/runtime/casan-core`.
What init writes into the target repo:
.casan/config.json project id, enforcement/integration mode, clients
.casan/version.lock pinned harness version + gate-code integrity hash
.casan/agentic.env Plan-20 bridge feature flags
.specify/ runtime state root marker (logs/traces/admissions)
.claude/settings.json Plan-20 Claude Code hooks (--client claude|all)
.codex/hooks.json+config Plan-20 Codex hooks (--client codex|all)
.casan/runtime/casan-core
optional self-contained Core (--runtime vendored)
`verify` recomputes the resolved harness gate-code hash and compares it to
version.lock — the pin+VERIFY half. Drift/tamper of the managed or vendored
runtime relative to what the project pinned is caught here (preserves the
Plan-16 "gates are trusted code" guarantee).
stdlib-only. Resolves the harness via CASAN_HARNESS_ROOT (set by the global
launcher) or --harness.
"""
from __future__ import annotations
import argparse
from contextlib import contextmanager
import hashlib
import json
import os
import re
import shutil
import stat
import subprocess
import sys
import tempfile
import time
PROJECT_RE = re.compile(r"^[a-z][a-z0-9-]{1,62}$")
# Packaging levels (docs/packaging/CASAN_PACKAGING_PLAN.md, packaging/levels.json).
# Cumulative: devkit⊃core, platform⊃devkit, enterprise⊃platform.
LEVEL_NAME = {"1": "core", "2": "devkit", "3": "platform", "4": "enterprise",
"core": "core", "devkit": "devkit", "platform": "platform", "enterprise": "enterprise"}
LEVEL_NUM = {"core": 1, "devkit": 2, "platform": 3, "enterprise": 4}
SUPPORTED_CLIENTS = ("claude", "codex", "vscode-copilot")
VSCODE_EXTENSION_IDS = {
"claude": ("anthropic.claude-code",),
"codex": ("OpenAI.chatgpt",),
"vscode-copilot": (
"GitHub.copilot",
"GitHub.copilot-chat",
"fpt-casan.casan-governed-chat",
),
}
PROMPT_MARKER_START = "<!-- CASAN_PROMPT_ENFORCEMENT_START -->"
PROMPT_MARKER_END = "<!-- CASAN_PROMPT_ENFORCEMENT_END -->"
CLIENT_LABELS = {
"claude": "Claude Code (CLI + VS Code + JetBrains)",
"codex": "Codex local (desktop + CLI + IDE)",
"vscode-copilot": "VS Code / @casan",
}
CLIENT_SURFACES = {
"claude": {
"supported_local": [
"claude-code-cli",
"claude-code-vscode",
"claude-code-jetbrains",
],
"not_covered": ["claude-desktop", "claude-web"],
"contract": "shared_claude_code_project_settings",
},
"codex": {
"supported_local": [
"codex-desktop-local",
"codex-cli",
"codex-ide-extension-local",
],
"not_covered": ["codex-cloud", "codex-web"],
"contract": "shared_codex_local_project_hooks",
},
"vscode-copilot": {
"supported_local": ["vscode-copilot-explicit-at-casan"],
"not_covered": ["github-copilot-built-in-chat"],
"contract": "casan_owned_explicit_route",
},
}
RUNTIME_MODES = ("managed", "vendored")
def _color(code, text):
if (not sys.stdout.isatty() or os.environ.get("NO_COLOR") is not None or
os.environ.get("TERM") == "dumb"):
return text
return "\033[%sm%s\033[0m" % (code, text)
def _mark(ok):
return _color("32" if ok else "31", "✓" if ok else "✗")
def _warn_mark():
return _color("33", "!")
def _heading(text):
print(_color("1;36", text))
def _details(rows):
width = max((len(label) for label, _value in rows), default=0)
for label, value in rows:
print(" %-*s %s" % (width, label, value))
def _client_names(clients):
return ", ".join(CLIENT_LABELS.get(client, client) for client in clients) or "None"
def _emit_json_or_human(args, payload, renderer):
if getattr(args, "json", False):
print(json.dumps(payload, ensure_ascii=False, indent=2))
else:
renderer(payload)
def _render_init(result):
_heading("%s CASAN initialized" % _mark(True))
_details([
("Project", result["project_id"]),
("Location", result["target"]),
("Level", "%s (%s)" % (
result["target_level_name"].capitalize(), result["target_level"])),
("Runtime", "%s — %s" % (
result["runtime_mode"].capitalize(), result["runtime_path"])),
("Mode", result["enforcement_mode"]),
("Clients", _client_names(result["clients"])),
("Files", "%d created or updated" % len(result["created"])),
("Harness", result["harness_version"]),
])
print()
print(_color("1", "Integrations"))
for path, status in result["hook_merges"].items():
ok = status not in (None, "absent")
print(" %s %-26s %s" % (_mark(ok), path, status or "unavailable"))
extension = result["vscode_extension"]
if extension.get("status") not in ("skipped",):
ok = extension.get("status") == "installed"
print(" %s %-26s %s" % (
_mark(ok), "VS Code extension", extension.get("status")))
print()
print(_color("1", "Next steps"))
print(" 1. Run `casan doctor`")
if "codex" in result["clients"]:
print(" 2. In a local Codex client, open `/hooks` and trust this project's hook.")
def _render_verify(result):
ok = result["status"] == "ok"
_heading("%s Harness integrity %s" % (
_mark(ok), "verified" if ok else "check failed"))
_details([
("Version", str(result.get("harness_version_now") or "unknown")),
("Location", str(result.get("harness_root") or "unavailable")),
("Expected", str(result.get("expected") or "unavailable")),
("Actual", str(result.get("actual") or "unavailable")),
])
def _render_level(result):
_heading("CASAN packaging level")
_details([
("Installed", str(result.get("installed_level") or "unknown")),
("Project", ("%s (%s)" % (
result.get("project_target_level_name"),
result.get("project_target_level")))
if result.get("project_target_level") else "not initialized"),
("Runtime", ("%s — %s" % (
result.get("project_runtime_mode"),
result.get("project_runtime_path")))
if result.get("project_target_level") else "not initialized"),
("Status", str(result.get("project_level_status") or "unknown")),
])
print()
for level, description in result["levels"].items():
print(" %-14s %s" % (level, description))
def _render_doctor(result):
ready = result["status"] == "ready"
_heading("CASAN Doctor")
print(" %s Harness integrity" % _mark(result["integrity"]["ok"]))
print(" %s Project bootstrap" % _mark(result["bootstrap"]["ok"]))
for client, item in result["client_checks"].items():
label = CLIENT_LABELS.get(client, client)
print(" %s %s" % (_mark(item.get("ready", False)), label))
surfaces = item.get("supported_surfaces") or []
if surfaces:
print(" Surfaces: %s" % ", ".join(surfaces))
reason = item.get("smoke", {}).get("reason")
if reason and not item.get("ready"):
print(" %s" % reason)
if result["warnings"]:
print()
print(_color("1;33", "Warnings"))
for warning in result["warnings"]:
print(" %s %s" % (_warn_mark(), warning))
print()
status = _color("1;32", "READY") if ready else _color("1;31", "NOT READY")
print("Status: %s" % status)
def _render_uninstall(result):
_heading("%s CASAN removed from project" % _mark(True))
_details([
("Project", result.get("project_id") or "unknown"),
("Location", result["target"]),
("Hooks", "%d integration files cleaned" % len(result["hook_changes"])),
("Files", "%d CASAN-owned files removed" % len(result["removed"])),
("Evidence", "removed" if result["purged"] else "retained"),
("VS Code extension", result["vscode_extension"]["status"]),
])
if result["retained"]:
print()
print(_color("1", "Retained for safety"))
for path in result["retained"]:
print(" - %s" % path)
@contextmanager
def owner_writable(path):
"""Temporarily make an owner-controlled path writable, then restore modes.
Some existing shells intentionally commit `.claude`/`.github` directories
as 0555. CASAN may add its config there only when the current user owns the
path; it never escalates privileges or leaves permissions broadened.
"""
changed = []
candidates = []
if os.path.exists(path):
candidates.append(path)
parent = os.path.dirname(path)
while parent and not os.path.exists(parent):
parent = os.path.dirname(parent)
if parent and parent not in candidates:
candidates.append(parent)
try:
for candidate in candidates:
info = os.stat(candidate)
mode = stat.S_IMODE(info.st_mode)
if mode & stat.S_IWUSR:
continue
getuid = getattr(os, "getuid", None)
if getuid is not None and info.st_uid != getuid():
raise PermissionError(
"CASAN cannot write %s: current user does not own %s" %
(path, candidate))
os.chmod(candidate, mode | stat.S_IWUSR)
changed.append((candidate, mode))
yield
finally:
for candidate, mode in reversed(changed):
try:
os.chmod(candidate, mode)
except OSError:
pass
def now_iso():
return time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime())
def devkit_root():
return os.path.dirname(os.path.abspath(__file__))
def _copy_if_absent(src, dst, created_rel, target, created):
if not os.path.exists(src) or os.path.exists(dst):
return False
with open(src, "rb") as fh:
data = fh.read()
with owner_writable(dst):
os.makedirs(os.path.dirname(dst), exist_ok=True)
with open(dst, "wb") as fh:
fh.write(data)
created.append(os.path.relpath(dst, target))
return True
def _copy_tree_missing(src_dir, dst_dir, target, created):
if not os.path.isdir(src_dir):
return 0
n = 0
for dp, _dn, fns in os.walk(src_dir):
rel = os.path.relpath(dp, src_dir)
for fn in fns:
s = os.path.join(dp, fn)
d = os.path.join(dst_dir, rel, fn) if rel != "." else os.path.join(dst_dir, fn)
if _copy_if_absent(s, d, None, target, created):
n += 1
return n
def resolve_harness(explicit):
for cand in (
explicit,
os.environ.get("CASAN_HARNESS_ROOT"),
os.environ.get("CASAN_GLOBAL_HARNESS_ROOT")):
if cand and os.path.isdir(os.path.join(cand, "scripts", "bash")):
return os.path.abspath(cand)
install = os.environ.get("CASAN_INSTALL_ROOT")
if install:
c = os.path.join(install, "packages", "casan-harness")
if os.path.isdir(c):
return os.path.abspath(c)
# Fallback: this file lives at packages/casan-devkit/casan-init.py.
c = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "casan-harness"))
return c if os.path.isdir(c) else None
def install_root(harness):
if os.environ.get("CASAN_INSTALL_ROOT"):
return os.path.abspath(os.environ["CASAN_INSTALL_ROOT"])
return os.path.abspath(os.path.join(harness, "..", ".."))
def harness_version(harness):
local_root = os.path.abspath(os.path.join(harness, "..", ".."))
for p in (os.path.join(local_root, "VERSION"),
os.path.join(install_root(harness), "VERSION")):
try:
with open(p, "r", encoding="utf-8") as fh:
v = fh.read().strip()
if v:
return v
except (OSError, IOError):
continue
return "0.0.0"
def compute_live(harness):
"""ALWAYS recompute the gate-code hash from the actual files on disk. Used by
verify so a tampered harness cannot hide behind a stale recorded hash."""
sys.path.insert(0, os.path.join(harness, "scripts", "python"))
try:
import harness_hash # noqa: E402
return harness_hash.compute(harness), "computed"
except Exception as exc: # noqa: BLE001
return "unavailable:%s" % exc, "error"
def compute_harness_hash(harness):
"""For PINNING at init: use the value recorded at install time if present
(it equals a live compute of the same files), else compute live. Verify must
NOT use this — it must call compute_live() to detect drift."""
local_root = os.path.abspath(os.path.join(harness, "..", ".."))
for recorded in (
os.path.join(local_root, ".harness-hash"),
os.path.join(install_root(harness), ".harness-hash")):
try:
with open(recorded, "r", encoding="utf-8") as fh:
v = fh.read().strip()
if v:
return v, "recorded"
except (OSError, IOError):
continue
return compute_live(harness)
def resolve_project_harness(target, explicit=None):
lock = _load_json_or(
os.path.join(target, ".casan", "version.lock"), {})
runtime_path = lock.get("runtime_path")
if lock.get("runtime_mode") == "vendored" and isinstance(runtime_path, str):
root = (
None if os.path.isabs(runtime_path)
else _safe_project_path(target, runtime_path)
)
if not root:
return None
candidate = os.path.join(root, "packages", "casan-harness")
if os.path.isdir(os.path.join(candidate, "scripts", "bash")):
return os.path.abspath(candidate)
return None
return resolve_harness(explicit)
def _write(path, text, backups):
with owner_writable(path):
if os.path.exists(path):
bak = path + ".casan-bak"
if not os.path.exists(bak):
with open(path, "r", encoding="utf-8", errors="replace") as fh:
old = fh.read()
with open(bak, "w", encoding="utf-8") as fh:
fh.write(old)
backups.append(bak)
os.makedirs(os.path.dirname(path), exist_ok=True)
with open(path, "w", encoding="utf-8") as fh:
fh.write(text)
def _copy_template(src, dst, backups):
try:
with open(src, "r", encoding="utf-8") as fh:
_write(dst, fh.read(), backups)
return True
except (OSError, IOError):
return False
def _load_json_or(path, default):
try:
with open(path, "r", encoding="utf-8") as fh:
return json.load(fh)
except (OSError, ValueError):
return default
def _safe_project_path(target, relative):
"""Resolve a manifest-owned relative path without allowing target escape."""
normalized = str(relative).replace("\\", "/").strip("/")
if not normalized or os.path.isabs(str(relative)):
return None
candidate = os.path.abspath(os.path.join(target, *normalized.split("/")))
target_real = os.path.realpath(target)
candidate_real = os.path.realpath(candidate)
try:
if os.path.commonpath((target_real, candidate_real)) != target_real:
return None
except ValueError:
return None
return candidate
def _file_sha256(path):
if not os.path.isfile(path) or os.path.islink(path):
return None
digest = hashlib.sha256()
try:
with open(path, "rb") as fh:
for chunk in iter(lambda: fh.read(1024 * 1024), b""):
digest.update(chunk)
except OSError:
return None
return digest.hexdigest()
def _install_vendored_core(target, source_harness):
"""Atomically install the production Core runtime inside one project."""
source_root = os.path.abspath(os.path.join(source_harness, "..", ".."))
copier = os.path.join(source_root, "scripts", "copy-runtime.py")
source_bin = os.path.join(source_root, "bin", "casan")
source_version = os.path.join(source_root, "VERSION")
for required in (source_bin, source_version):
if not os.path.isfile(required):
raise RuntimeError(
"vendored runtime source is incomplete; missing %s" % required)
destination = _safe_project_path(
target, ".casan/runtime/casan-core")
if not destination:
raise RuntimeError(
"vendored runtime path escapes the project through a symlink")
parent = os.path.dirname(destination)
os.makedirs(parent, exist_ok=True)
staging = tempfile.mkdtemp(prefix=".casan-core-", dir=parent)
try:
if os.path.isfile(copier):
result = subprocess.run(
[
sys.executable,
copier,
"--source-root", source_root,
"--destination-root", staging,
"--component", "harness",
"--clean",
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
text=True,
check=False,
)
if result.returncode != 0:
raise RuntimeError(
result.stderr.strip() or result.stdout.strip() or
"production runtime copy failed")
else:
shutil.copytree(
source_harness,
os.path.join(staging, "packages", "casan-harness"))
vendored_harness = os.path.join(
staging, "packages", "casan-harness")
forbidden = [
relative for relative in (
"tests",
"level5",
"scripts/bash/ci-harness-gate.sh",
"scripts/bash/security-gate.sh",
"scripts/bash/dashboard-server.py",
)
if os.path.exists(os.path.join(
vendored_harness, *relative.split("/")))
]
if forbidden:
raise RuntimeError(
"source is not a production runtime; forbidden paths: %s" %
", ".join(forbidden))
os.makedirs(os.path.join(staging, "bin"), exist_ok=True)
shutil.copy2(source_bin, os.path.join(staging, "bin", "casan"))
shutil.copy2(source_version, os.path.join(staging, "VERSION"))
with open(os.path.join(staging, ".casan-level"), "w",
encoding="utf-8") as fh:
fh.write("core\n")
vendored_hash, hash_source = compute_live(vendored_harness)
if hash_source == "error":
raise RuntimeError(
"cannot verify staged vendored Core: %s" % vendored_hash)
with open(os.path.join(staging, ".harness-hash"), "w",
encoding="utf-8") as fh:
fh.write(vendored_hash + "\n")
if os.path.isdir(destination) and not os.path.islink(destination):
shutil.rmtree(destination)
elif os.path.exists(destination) or os.path.islink(destination):
os.unlink(destination)
os.replace(staging, destination)
staging = None
finally:
if staging and os.path.isdir(staging):
shutil.rmtree(staging)
file_count = sum(
len(files) for _root, _dirs, files in os.walk(destination))
return destination, file_count
def _remove_vendored_core(target):
destination = _safe_project_path(
target, ".casan/runtime/casan-core")
if not destination:
return False
if not os.path.exists(destination) and not os.path.islink(destination):
return False
with owner_writable(destination):
if os.path.isdir(destination) and not os.path.islink(destination):
shutil.rmtree(destination)
else:
os.unlink(destination)
_prune_empty_parents(destination, target)
return True
def _backup_once(path, backups):
if backups is None:
return
bak = path + ".casan-bak"
if os.path.exists(path) and not os.path.exists(bak):
with open(path, "r", encoding="utf-8", errors="replace") as fh:
old = fh.read()
with owner_writable(bak):
with open(bak, "w", encoding="utf-8") as fh:
fh.write(old)
backups.append(bak)
def _has_marker_hook(groups, marker):
if not isinstance(groups, list):
return False
for g in groups:
if not isinstance(g, dict):
continue
for h in g.get("hooks", []) or []:
if isinstance(h, dict) and marker in str(h.get("command", "")):
return True
return False
def _remove_marker_hooks(doc, marker):
"""Remove only handlers owned by CASAN, preserving all user hook groups."""
changed = False
hooks = doc.get("hooks") if isinstance(doc, dict) else None
if not isinstance(hooks, dict):
return changed
for event in list(hooks):
groups = hooks.get(event)
if not isinstance(groups, list):
continue
kept_groups = []
for group in groups:
if not isinstance(group, dict):
kept_groups.append(group)
continue
handlers = group.get("hooks")
if not isinstance(handlers, list):
kept_groups.append(group)
continue
kept_handlers = []
for handler in handlers:
commands = ""
if isinstance(handler, dict):
commands = "%s %s" % (handler.get("command", ""),
handler.get("commandWindows", ""))
if marker in commands:
changed = True
else:
kept_handlers.append(handler)
if kept_handlers:
updated = dict(group)
updated["hooks"] = kept_handlers
kept_groups.append(updated)
elif handlers:
changed = True
if kept_groups:
hooks[event] = kept_groups
else:
hooks.pop(event, None)
return changed
def merge_json_hooks(target_file, template_file, marker, backups):
"""MERGE the template's hook groups into an existing hooks JSON without
clobbering the user's own hooks/agents/skills config. Existing CASAN-owned
handlers are replaced so upgrades cannot leave a stale command behind.
Returns created|merged|unchanged|None."""
tmpl = _load_json_or(template_file, None)
if not isinstance(tmpl, dict):
return None
existed = os.path.exists(target_file)
doc = _load_json_or(target_file, {}) if existed else {}
if not isinstance(doc, dict):
doc = {}
before = json.dumps(doc, ensure_ascii=False, sort_keys=True)
hooks = doc.get("hooks")
if not isinstance(hooks, dict):
hooks = {}
doc["hooks"] = hooks
_remove_marker_hooks(doc, marker)
for event, groups in (tmpl.get("hooks") or {}).items():
cur = hooks.get(event)
if not isinstance(cur, list):
cur = []
hooks[event] = cur
cur.extend(groups if isinstance(groups, list) else [])
for k, v in tmpl.items(): # carry template scalars (e.g. "version") if absent
if k != "hooks" and k not in doc:
doc[k] = v
changed = (not existed) or before != json.dumps(doc, ensure_ascii=False, sort_keys=True)
if changed:
with owner_writable(target_file):
_backup_once(target_file, backups)
os.makedirs(os.path.dirname(target_file), exist_ok=True)
with open(target_file, "w", encoding="utf-8") as fh:
fh.write(json.dumps(doc, ensure_ascii=False, indent=2) + "\n")
return ("created" if not existed else "merged") if changed else "unchanged"
def remove_json_hooks(target_file, marker, backups):
"""Disable one CASAN integration without touching non-CASAN hooks."""
if not os.path.exists(target_file):
return "absent"
doc = _load_json_or(target_file, None)
if not isinstance(doc, dict) or not _remove_marker_hooks(doc, marker):
return "unchanged"
with owner_writable(target_file):
_backup_once(target_file, backups)
with open(target_file, "w", encoding="utf-8") as fh:
fh.write(json.dumps(doc, ensure_ascii=False, indent=2) + "\n")
return "removed"
def clean_legacy_codex_config(target_file, backups):
"""Remove only Plan-21's obsolete `[hooks]`/`[casan]` blocks.
Current Codex enables hooks by default and rejects/ignores the legacy custom
keys. The sentinel comment makes this migration precise; user-authored TOML
is otherwise preserved byte-for-byte.
"""
if not os.path.exists(target_file):
return "absent"
with open(target_file, "r", encoding="utf-8", errors="replace") as fh:
current = fh.read()
sentinel = "# CASAN Plan-20 (added by casan init)"
created_header = "# CASAN Plan-20 Codex config (created by casan init)"
if sentinel not in current and created_header not in current:
return "unchanged"
lines = current.splitlines()
kept = []
skipping = False
for line in lines:
stripped = line.strip()
if stripped == created_header:
continue
if stripped == sentinel:
skipping = True
continue
if skipping and stripped.startswith("[") and stripped != "[casan]":
skipping = False
if not skipping:
kept.append(line)
# Old files created by CASAN put [hooks] immediately before the sentinel.
cleaned = "\n".join(kept)
cleaned = re.sub(
r"(?ms)\n?\[hooks\]\nenabled = true\nproject_hooks = true\n(?=\s*$)",
"\n", cleaned)
cleaned = cleaned.strip() + ("\n" if cleaned.strip() else "")
with owner_writable(target_file):
_backup_once(target_file, backups)
if cleaned:
with open(target_file, "w", encoding="utf-8") as fh:
fh.write(cleaned)
else:
os.unlink(target_file)
return "cleaned"
def is_casan_source_hub(target):
"""Distinguish this product's source checkout from an adopted vendored app.
Older DevKit adoption copied ``packages/casan-harness`` into an application.
That directory alone therefore does not make the application a CASAN source
hub. The source checkout also carries the DevKit source, release manifest,
and root installer.
"""
required = (
os.path.join("packages", "casan-harness", "scripts", "bash",
"casan-harness.sh"),
os.path.join("packages", "casan-devkit", "casan-init.py"),
os.path.join("packaging", "levels.json"),
"install.sh",
)
return all(os.path.isfile(os.path.join(target, item)) for item in required)
def _hybrid_prompt_block(clients):
enabled = ", ".join(clients) if clients else "none"
return """<!-- CASAN_PROMPT_ENFORCEMENT_START -->
## CASAN IDE governance — mandatory
- `.casan/config.json` is the source of truth for enabled integrations (currently: %s).
- Claude Code and Codex normal prompts are governed only when their integration is enabled and the project hooks are loaded; Codex additionally requires `/hooks` trust review.
- GitHub Copilot built-in chat is not globally intercepted. Use the explicit `@casan` participant for a CASAN-owned Copilot turn.
- A retained `bin/casan-chat` entrypoint remains a compatible governed route, but it is no longer the only supported prompt boundary.
- Do not claim CASAN certification without the matching trace/evidence, and do not bypass a denied or degraded decision.
<!-- CASAN_PROMPT_ENFORCEMENT_END -->""" % enabled
def _replace_managed_prompt_block(path, replacement, backups):
if not os.path.isfile(path):
return "absent"
with open(path, "r", encoding="utf-8", errors="replace") as fh:
current = fh.read()
pattern = re.compile(
re.escape(PROMPT_MARKER_START) + r".*?" +
re.escape(PROMPT_MARKER_END), re.DOTALL)
if not pattern.search(current):
return "unmanaged"
updated = pattern.sub(replacement, current)
if updated == current:
return "unchanged"
with owner_writable(path):
_backup_once(path, backups)
with open(path, "w", encoding="utf-8") as fh:
fh.write(updated.rstrip() + "\n")
return "migrated"
def _legacy_instruction_conflicts(target):
"""Report unmarked legacy prose that init must not silently rewrite."""
conflicts = []
phrases = (
"The supported prompt boundary is `bin/casan-chat`",
"CASAN Core が intercept できない",
"Direct Claude, ChatGPT, Codex or Copilot UI prompts are outside",
)
for relative in ("AGENTS.md", "CLAUDE.md",
os.path.join(".github", "copilot-instructions.md")):
path = os.path.join(target, relative)
if not os.path.isfile(path):
continue
with open(path, "r", encoding="utf-8", errors="replace") as fh:
current = fh.read()
unmanaged = re.sub(
re.escape(PROMPT_MARKER_START) + r".*?" +
re.escape(PROMPT_MARKER_END), "", current, flags=re.DOTALL)
if any(phrase in unmanaged for phrase in phrases):
conflicts.append(relative.replace(os.sep, "/"))
return conflicts
def migrate_vendored_prompt_contract(target, clients, backups):
"""Migrate only CASAN-owned legacy files; retain all project-owned content."""
replacement = _hybrid_prompt_block(clients)
instruction_files = {}
for relative in ("AGENTS.md", "CLAUDE.md",
os.path.join(".github", "copilot-instructions.md")):
instruction_files[relative.replace(os.sep, "/")] = (
_replace_managed_prompt_block(
os.path.join(target, relative), replacement, backups))
policy_path = os.path.join(target, ".casan", "prompt-policy.json")
policy_status = "absent"
if os.path.isfile(policy_path):
policy = _load_json_or(policy_path, None)
if isinstance(policy, dict):
before = json.dumps(policy, ensure_ascii=False, sort_keys=True)
policy["direct_external_ui"] = "client_dependent_see_config"
policy["agentic_clients"] = clients
policy["hybrid_adoption"] = True
if before != json.dumps(policy, ensure_ascii=False, sort_keys=True):
with owner_writable(policy_path):
_backup_once(policy_path, backups)
with open(policy_path, "w", encoding="utf-8") as fh:
fh.write(json.dumps(
policy, ensure_ascii=False, indent=2) + "\n")
policy_status = "migrated"
else:
policy_status = "unchanged"
else:
policy_status = "unreadable"
return {
"detected": True,
"vendored_harness": "retained_for_compatibility",
"managed_instruction_blocks": instruction_files,
"prompt_policy": policy_status,
"manual_review": _legacy_instruction_conflicts(target),
"note": (
"Existing .claude agents/skills/commands, .github content, CI, "
"and the vendored harness were preserved."),
}
def _normalize_runtime_mode(value):
aliases = {
"1": "managed",
"global": "managed",
"shared": "managed",
"2": "vendored",
"local": "vendored",
"offline": "vendored",
"self-contained": "vendored",
"selfcontained": "vendored",
}
normalized = aliases.get(str(value).strip().lower(),
str(value).strip().lower())
if normalized not in RUNTIME_MODES:
raise ValueError(
"unknown runtime %r (choose managed or vendored)" % value)
return normalized
def select_runtime_mode(explicit, previous, interactive):
"""Resolve Core placement without surprising existing projects.
An explicit flag always wins. Re-init keeps a valid existing selection.
Only a new interactive adoption opens the placement wizard; automation
defaults to managed and never waits for input.
"""
if explicit:
return _normalize_runtime_mode(explicit)
if previous in RUNTIME_MODES:
return previous
if not interactive:
return "managed"
while True:
sys.stderr.write(
"\nCore runtime placement\n\n"
" 1) Managed (Recommended)\n"
" Use the shared CASAN installation, pinned by version and hash.\n"
" Best for developer workstations and managed CI.\n\n"
" 2) Vendored\n"
" Copy production-only Core into .casan/runtime/casan-core.\n"
" Best for offline, air-gapped, or self-contained repositories.\n\n"
"Select runtime [1]: ")
sys.stderr.flush()
answer = sys.stdin.readline()
if not answer or not answer.strip():
return "managed"
try:
return _normalize_runtime_mode(answer)
except ValueError:
sys.stderr.write(
"Invalid selection. Enter 1 for Managed or 2 for Vendored.\n")
def _normalize_clients(values):
aliases = {
"1": "claude",
"2": "codex",
"3": "vscode-copilot",
"copilot": "vscode-copilot",
"vscode": "vscode-copilot",
"github-copilot": "vscode-copilot",
}
selected = []
for value in values:
for raw in str(value).split(","):
item = aliases.get(raw.strip().lower(), raw.strip().lower())
if item == "all":
item_values = list(SUPPORTED_CLIENTS)
elif item in ("none", ""):
item_values = []
elif item in SUPPORTED_CLIENTS:
item_values = [item]
else:
raise ValueError("unknown --client %r (valid: %s, all, none)" %
(raw, ", ".join(SUPPORTED_CLIENTS)))
for normalized in item_values:
if normalized not in selected:
selected.append(normalized)
return selected
def select_clients(values, interactive):
"""Normalize repeatable/comma-separated selections.
A plain interactive `casan init` presents the requested IDE menu. In
non-interactive automation, the historical Claude+Codex default is kept.
"""
if values:
return _normalize_clients(values)
if not interactive:
return _normalize_clients(["claude,codex"])
while True:
sys.stderr.write(
"\nClient integrations\n\n"
" 1) Claude Code (CLI + VS Code + JetBrains)\n"
" 2) Codex local (desktop app + CLI + IDE extension)\n"
" 3) GitHub Copilot in VS Code via explicit @casan route\n\n"
"Select clients (comma-separated) [1,2]: ")
sys.stderr.flush()
answer = sys.stdin.readline()
values = [answer.strip() or "1,2"] if answer else ["1,2"]
try:
return _normalize_clients(values)
except ValueError:
sys.stderr.write(
"Invalid selection. Enter 1, 2, 3, a comma-separated list, "
"`all`, or `none`.\n")
def merge_vscode_recommendations(target_file, clients, backups):
existed = os.path.exists(target_file)
doc = _load_json_or(target_file, {}) if existed else {}
if not isinstance(doc, dict):
doc = {}
before = json.dumps(doc, ensure_ascii=False, sort_keys=True)
recommendations = doc.get("recommendations")
if not isinstance(recommendations, list):
recommendations = []
managed = {item for values in VSCODE_EXTENSION_IDS.values() for item in values}
recommendations = [item for item in recommendations if item not in managed]
for client in clients:
for extension_id in VSCODE_EXTENSION_IDS.get(client, ()):
if extension_id not in recommendations:
recommendations.append(extension_id)
if recommendations:
doc["recommendations"] = recommendations
else:
doc.pop("recommendations", None)
changed = (not existed and bool(doc)) or before != json.dumps(
doc, ensure_ascii=False, sort_keys=True)
if changed:
with owner_writable(target_file):
_backup_once(target_file, backups)
os.makedirs(os.path.dirname(target_file), exist_ok=True)
with open(target_file, "w", encoding="utf-8") as fh:
fh.write(json.dumps(doc, ensure_ascii=False, indent=2) + "\n")
return ("created" if not existed else "merged") if changed else "unchanged"
def build_vscode_vsix():
builder = os.path.join(devkit_root(), "package-vscode-extension.py")
output = os.path.join(devkit_root(), "dist", "casan-governed-chat.vsix")
if not os.path.isfile(builder):
return None, "builder_missing"
result = subprocess.run(
[sys.executable, builder, "--output", output],
stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=False)
if result.returncode != 0 or not os.path.isfile(output):
return None, "build_failed:%s" % result.stderr.strip()
return output, "built"
def install_vscode_extension(mode):
"""Install the local CASAN VSIX when requested and `code` is available."""
if mode == "no":
return {"status": "skipped", "reason": "disabled"}
vsix, status = build_vscode_vsix()
if not vsix:
return {"status": "failed", "reason": status}
code = shutil.which("code")
if not code:
return {
"status": "needs_install",
"reason": "code_cli_not_found",
"vsix": vsix,
"action": "Install this VSIX from VS Code: Extensions: Install from VSIX...",
}
result = subprocess.run(
[code, "--install-extension", vsix, "--force"],
stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=False)
return {
"status": "installed" if result.returncode == 0 else "failed",
"extension": "fpt-casan.casan-governed-chat",
"vsix": vsix,
"command": code,
"detail": (result.stdout or result.stderr).strip(),
}
def cmd_init(args):
harness = resolve_harness(args.harness)
if not harness:
sys.stderr.write("casan init: cannot locate the harness. Install CASAN first "
"(install.sh) or set CASAN_HARNESS_ROOT.\n")
return 1
target = os.path.abspath(args.target or os.getcwd())
if not os.path.isdir(target):
sys.stderr.write("casan init: target is not a directory: %s\n" % target)
return 66
# Guardrail: refuse to adopt the CASAN PRODUCT SOURCE HUB into itself.
# A vendored application from the previous DevKit model also contains
# packages/casan-harness, so that directory by itself is not sufficient to
# identify a source hub. Such applications are migrated in place below.
hub_marker = os.path.join(target, "packages", "casan-harness", "scripts", "bash", "casan-harness.sh")
source_hub = is_casan_source_hub(target)
vendored_harness = os.path.isfile(hub_marker) and not source_hub
if source_hub and not args.force:
sys.stderr.write(
"casan init: target is a CASAN SOURCE HUB — refusing to "
"adopt CASAN into itself (the Plan-20 hooks would block your own agent). "
"Use --force only if you really mean to.\n")
return 65
project = args.project or re.sub(r"[^a-z0-9-]", "-", os.path.basename(target).lower()).strip("-")
if not PROJECT_RE.match(project):
sys.stderr.write("casan init: --project must match ^[a-z][a-z0-9-]{1,62}$ (got %r)\n" % project)
return 64
# Packaging level to adopt into the project.
lvl_name = LEVEL_NAME.get(str(args.level).lower())
if not lvl_name:
sys.stderr.write("casan init: --level must be 1..4 or core|devkit|platform|enterprise\n")
return 64
lvl = LEVEL_NUM[lvl_name]
if lvl == 4:
sys.stderr.write("casan init: Level 4 (enterprise) is FUTURE / not shipped — refusing "
"(no fake-complete adoption). See packaging/levels.json.\n")
return 3
preview = (lvl == 3) # platform is a separate preview SERVICE; init applies the L2 base
apply_devkit = (lvl >= 2)
previous_config = _load_json_or(
os.path.join(target, ".casan", "config.json"), {})
previous_runtime_mode = previous_config.get("runtime_mode")
interactive = (
sys.stdin.isatty() and not args.non_interactive and not args.json)
try:
runtime_mode = select_runtime_mode(
args.runtime, previous_runtime_mode, interactive)
clients = select_clients(args.client, interactive)
except ValueError as error:
sys.stderr.write("casan init: %s\n" % error)
return 64
runtime_removed = False
runtime_files = 0
if runtime_mode == "vendored":
try:
runtime_root, runtime_files = _install_vendored_core(
target, harness)
except (OSError, RuntimeError) as error:
sys.stderr.write(
"casan init: cannot install vendored Core runtime: %s\n" %
error)
return 1
active_harness = os.path.join(
runtime_root, "packages", "casan-harness")
runtime_path = os.path.relpath(
runtime_root, target).replace(os.sep, "/")
else:
runtime_removed = _remove_vendored_core(target)
active_harness = harness
runtime_root = install_root(harness)
runtime_path = runtime_root
version = harness_version(active_harness)
hhash, hsource = compute_harness_hash(active_harness)
created = []
backups = []
previous_manifest = _load_json_or(
os.path.join(target, ".casan", "init-manifest.json"), {})
owned_files = {
str(path).replace("\\", "/")
for path in previous_manifest.get("owned_files", [])
if isinstance(path, str)
}
previous_owned_hashes = {
str(path).replace("\\", "/"): digest
for path, digest in previous_manifest.get(
"owned_file_hashes", {}).items()
if isinstance(path, str) and isinstance(digest, str)
}
newly_owned_files = set()
level_removed = []
level_retained = []
if not apply_devkit:
devkit_owned_files = {
path for path in owned_files
if (path.startswith(".gitea/workflows/casan-") or
path.startswith("apps/"))
}
level_removed, level_retained = _remove_owned_project_artifacts(
target, devkit_owned_files, previous_owned_hashes)
for relative in level_removed:
owned_files.discard(relative)
previous_owned_hashes.pop(relative, None)
def created_add(p):
created.append(os.path.relpath(p, target))
def mark_owned_if_absent(p):
if not os.path.exists(p):
relative = os.path.relpath(p, target).replace(os.sep, "/")
owned_files.add(relative)
newly_owned_files.add(relative)
# ── .casan/config.json ──
cfg_dir = os.path.join(target, ".casan")
cfg = {
"schema_version": "21.2",
"project_id": project,
"created_at": now_iso(),
"enforcement_mode": args.mode,
"integration_mode": args.integration_mode,
"clients": clients,
"client_capabilities": {
"claude": "project_hook" if "claude" in clients else "disabled",
"codex": "project_hook_trust_required" if "codex" in clients else "disabled",
"vscode-copilot": "casan_owned_explicit_at_casan"
if "vscode-copilot" in clients else "disabled",
"vscode-native-copilot": "unsupported_global_interception",
},
"client_surfaces": {
client: {
"enabled": client in clients,
**surface,
}
for client, surface in CLIENT_SURFACES.items()
},
"harness_version": version,
"adoption_model": (
"managed-global" if runtime_mode == "managed"
else "vendored-project"),
"runtime_mode": runtime_mode,
"runtime_path": runtime_path,
"target_level": lvl,
"target_level_name": lvl_name,
}
p = os.path.join(cfg_dir, "config.json")
mark_owned_if_absent(p)
_write(p, json.dumps(cfg, ensure_ascii=False, indent=2) + "\n", backups); created_add(p)
# ── .casan/version.lock (pin) ──
lock = {
"harness_version": version,
"harness_hash": hhash,
"hash_algo": "sha256",
"hash_source": hsource,
"install_root": runtime_root,
"runtime_mode": runtime_mode,
"runtime_path": runtime_path,
"recorded_at": now_iso(),
}
p = os.path.join(cfg_dir, "version.lock")
mark_owned_if_absent(p)
_write(p, json.dumps(lock, ensure_ascii=False, indent=2) + "\n", backups); created_add(p)
# ── .casan/agentic.env (Plan-20 flags) ──
env_lines = [
"# CASAN Plan-20 flags (reference/export compatibility).",
"# .casan/casan-hook.py loads the authoritative values from config.json automatically.",
"CASAN_AGENTIC_BRIDGE_ENABLED=1",
"CASAN_AGENTIC_ENFORCEMENT_MODE=%s" % args.mode,
"CASAN_AGENTIC_INTEGRATION_MODE=%s" % args.integration_mode,
"",
]
p = os.path.join(cfg_dir, "agentic.env")
mark_owned_if_absent(p)
_write(p, "\n".join(env_lines), backups); created_add(p)
# Stable project-local bootstrap. It loads the config above, resolves the
# managed/vendored Core and verifies version.lock before dispatching.
bootstrap_source = os.path.join(devkit_root(), "templates", "project",
"casan-hook.py")
bootstrap_target = os.path.join(cfg_dir, "casan-hook.py")
if not os.path.isfile(bootstrap_source):
sys.stderr.write("casan init: missing project hook bootstrap template\n")
return 1
mark_owned_if_absent(bootstrap_target)
with open(bootstrap_source, "r", encoding="utf-8") as fh:
_write(bootstrap_target, fh.read(), backups)
try:
os.chmod(bootstrap_target, 0o755)
except OSError:
pass
created_add(bootstrap_target)
# ── .specify/ state root marker ──
specify = os.path.join(target, ".specify")
with owner_writable(os.path.join(specify, "state")):
os.makedirs(os.path.join(specify, "state"), exist_ok=True)
with owner_writable(os.path.join(specify, "logs")):
os.makedirs(os.path.join(specify, "logs"), exist_ok=True)
gi = os.path.join(specify, ".gitignore")
if not os.path.exists(gi):
mark_owned_if_absent(gi)
_write(gi, "# CASAN runtime state — do not commit\nlogs/\nstate/\n", backups); created_add(gi)
# ── Plan-20 client hooks — MERGED into any existing config, never clobbered.
# A project that already has a shell (.claude/agents, skills, its own hooks)
# keeps everything; CASAN hooks are added idempotently.
ad = os.path.join(harness, "adapters")
merges = {}
claude_dst = os.path.join(target, ".claude", "settings.json")
if "claude" in clients:
dst = claude_dst
mark_owned_if_absent(dst)
remove_json_hooks(dst, "claude_hook.py", backups)
r = merge_json_hooks(dst, os.path.join(ad, "claude-code", "settings.template.json"),
"casan-hook.py", backups)
if r and r != "unchanged":
created_add(dst)
merges[".claude/settings.json"] = r
else:
legacy = remove_json_hooks(claude_dst, "claude_hook.py", backups)
current = remove_json_hooks(claude_dst, "casan-hook.py", backups)
merges[".claude/settings.json"] = (
"removed" if "removed" in (legacy, current) else current)
codex_hooks_dst = os.path.join(target, ".codex", "hooks.json")
if "codex" in clients:
dsth = codex_hooks_dst
mark_owned_if_absent(dsth)
remove_json_hooks(dsth, "codex_hook.py", backups)
r = merge_json_hooks(dsth, os.path.join(ad, "codex", "hooks.template.json"),
"casan-hook.py", backups)
if r and r != "unchanged":
created_add(dsth)
merges[".codex/hooks.json"] = r
else:
legacy = remove_json_hooks(codex_hooks_dst, "codex_hook.py", backups)
current = remove_json_hooks(codex_hooks_dst, "casan-hook.py", backups)
merges[".codex/hooks.json"] = (
"removed" if "removed" in (legacy, current) else current)
# Migrate obsolete Plan-21 TOML blocks. Current Codex discovers hooks.json
# directly and requires trust through /hooks; no custom [casan] keys.
merges[".codex/config.toml"] = clean_legacy_codex_config(
os.path.join(target, ".codex", "config.toml"), backups)
vscode_file = os.path.join(target, ".vscode", "extensions.json")
mark_owned_if_absent(vscode_file)
vscode_merge = merge_vscode_recommendations(vscode_file, clients, backups)
if vscode_merge not in ("unchanged", "absent"):
created_add(vscode_file)
merges[".vscode/extensions.json"] = vscode_merge
vscode_install = (
install_vscode_extension(args.vscode_install)
if "vscode-copilot" in clients else
{"status": "skipped", "reason": "vscode-copilot_not_selected"}
)
legacy_migration = (
migrate_vendored_prompt_contract(target, clients, backups)
if vendored_harness else
{"detected": False}
)
# ── Level 2 (devkit) adoption extras: CI workflow + domain-pack scaffold.
# These are the real difference between L1 (gate/hooks only) and L2 (full
# adoption). Copied only if absent — never clobber the project's own files.
level_extras = []
if apply_devkit:
dk = devkit_root()
ci_src = os.path.join(dk, "templates", "gitea-workflow", "ci.yml")
ci_dst = os.path.join(target, ".gitea", "workflows", "casan-ci.yml")
if _copy_if_absent(ci_src, ci_dst, None, target, created):
relative = os.path.relpath(
ci_dst, target).replace(os.sep, "/")
owned_files.add(relative)
newly_owned_files.add(relative)
level_extras.append(".gitea/workflows/casan-ci.yml")
dom_src = os.path.join(dk, "templates", "domain-pack")
dom_dst = os.path.join(target, "apps", project, "domain")
created_before_domain = len(created)
n = _copy_tree_missing(dom_src, dom_dst, target, created)
if n:
domain_files = {
path.replace(os.sep, "/")
for path in created[created_before_domain:]
}
owned_files.update(domain_files)
newly_owned_files.update(domain_files)
level_extras.append("apps/%s/domain (%d files)" % (project, n))
# ── manifest (so uninstall/verify know what init created) ──
owned_file_hashes = {
path: digest
for path, digest in previous_owned_hashes.items()
if path in owned_files
}
for relative in newly_owned_files:
owned_path = _safe_project_path(target, relative)
digest = _file_sha256(owned_path) if owned_path else None
if digest:
owned_file_hashes[relative] = digest
manifest = {
"manifest_version": 2,
"created": created,
"backups": [os.path.relpath(b, target) for b in backups],
"owned_files": sorted(owned_files),
"owned_file_hashes": dict(sorted(owned_file_hashes.items())),
"project_id": project,
"at": now_iso(),
}
p = os.path.join(cfg_dir, "init-manifest.json")
_write(p, json.dumps(manifest, ensure_ascii=False, indent=2) + "\n", backups)
result = {
"status": "initialized",
"project_id": project,
"target": target,
"target_level": lvl,
"target_level_name": lvl_name,
"harness_version": version,
"harness_hash": hhash,
"runtime_mode": runtime_mode,
"runtime_path": runtime_path,
"runtime_files": runtime_files,
"runtime_removed": runtime_removed,
"enforcement_mode": args.mode,
"clients": clients,
"created": created,
"hook_merges": merges,
"vscode_extension": vscode_install,
"legacy_migration": legacy_migration,
"level_extras": level_extras,
"level_removed": level_removed,
"level_retained": level_retained,
"note": (
"managed runtime is referenced by version/hash lock"
if runtime_mode == "managed" else
"production-only Core runtime vendored under .casan/runtime/casan-core"
),
}
_emit_json_or_human(args, result, _render_init)
if legacy_migration.get("manual_review"):
sys.stderr.write(
"casan init: WARNING — legacy CASAN prose outside managed markers "
"still needs review in: %s\n" %
", ".join(legacy_migration["manual_review"]))
if preview:
sys.stderr.write("casan init: NOTE — Level 3 (platform) is a PREVIEW SERVICE (Control "
"Panel/Dashboard), adopted by DEPLOYING it, not by repo config. "
"Applied the Level 2 base here; deploy platform separately.\n")
if hsource == "error":
sys.stderr.write("casan init: WARNING — could not compute harness hash; "
"pin verification will be unavailable.\n")
return 0
def cmd_verify(args):
target = os.path.abspath(args.target or os.getcwd())
harness = resolve_project_harness(target, args.harness)
if not harness:
sys.stderr.write("casan verify-harness: cannot locate the project runtime.\n")
return 1
lock_path = os.path.join(target, ".casan", "version.lock")
if not os.path.exists(lock_path):
sys.stderr.write("casan verify-harness: no .casan/version.lock (run `casan init` first).\n")
return 1
with open(lock_path, "r", encoding="utf-8") as fh:
lock = json.load(fh)
expected = lock.get("harness_hash")
actual, _src = compute_live(harness) # live recompute — never the cached hash
ok = (expected == actual) and expected and not str(expected).startswith("unavailable")
result = {
"status": "ok" if ok else "drift",
"expected": expected,
"actual": actual,
"harness_version_lock": lock.get("harness_version"),
"harness_version_now": harness_version(harness),
"harness_root": harness,
}
_emit_json_or_human(args, result, _render_verify)
if not ok:
sys.stderr.write("HARNESS_INTEGRITY_DRIFT — the resolved Core runtime does not match "
"the project pin. The runtime changed or was tampered.\n")
return 3
return 0
def cmd_level(args):
"""Show the installed packaging level and the project's target level."""
harness = resolve_harness(args.harness)
installed = None
if harness:
try:
with open(os.path.join(install_root(harness), ".casan-level"), "r", encoding="utf-8") as fh:
installed = fh.read().strip()
except (OSError, IOError):
installed = "unknown"
target = os.path.abspath(args.target or os.getcwd())
cfg = _load_json_or(os.path.join(target, ".casan", "config.json"), {})
status_map = {1: "implemented", 2: "implemented", 3: "preview", 4: "future"}
tl = cfg.get("target_level")
out = {
"installed_level": installed,
"project_target_level": tl,
"project_target_level_name": cfg.get("target_level_name"),
"project_runtime_mode": cfg.get("runtime_mode", "managed"),
"project_runtime_path": cfg.get("runtime_path"),
"project_level_status": status_map.get(tl, "unknown") if tl else None,
"levels": {
"1 core": "implemented — harness + gates + CLI",
"2 devkit": "implemented — + adoption tooling (casan init, CI, domain-pack)",
"3 platform": "preview — Control Panel/Dashboard SERVICE (deploy separately)",
"4 enterprise": "future — not shipped",
},
}
_emit_json_or_human(args, out, _render_level)
return 0
def _commands_in_hooks(path):
doc = _load_json_or(path, {})
values = []
for groups in (doc.get("hooks") or {}).values():
if not isinstance(groups, list):
continue
for group in groups:
for handler in (group.get("hooks") or []) if isinstance(group, dict) else []:
if isinstance(handler, dict):
values.append(str(handler.get("command", "")))
values.append(str(handler.get("commandWindows", "")))
return values
def _smoke_bootstrap(target, client):
bootstrap = os.path.join(target, ".casan", "casan-hook.py")
event = "Begin" if client == "vscode-copilot" else "UserPromptSubmit"
payload = {
"cwd": target,
"project": target,
"session_id": "casan-doctor",
"turn_id": "casan-doctor-turn",
"prompt": "CASAN doctor smoke",
}
with tempfile.TemporaryDirectory(prefix="casan-doctor-") as tmp:
env = dict(os.environ)
env["CASAN_APP_ROOT"] = target
env["CASAN_STATE_ROOT"] = os.path.join(tmp, ".specify")
result = subprocess.run(
[sys.executable, bootstrap, "--client", client, "--event", event],
input=json.dumps(payload), stdout=subprocess.PIPE,
stderr=subprocess.PIPE, text=True, cwd=target, env=env, check=False)
try:
response = json.loads(result.stdout.strip() or "{}")
except ValueError:
response = {}
return {
"ok": result.returncode == 0 and response.get("decision") != "block",
"returncode": result.returncode,
"decision": response.get("decision"),
"trace_id": response.get("trace_id"),
"reason": response.get("reason") or result.stderr.strip() or None,
}
def cmd_doctor(args):
target = os.path.abspath(args.target or os.getcwd())
config_path = os.path.join(target, ".casan", "config.json")
config = _load_json_or(config_path, {})
if not config:
sys.stderr.write("casan doctor: project is not initialized; run `casan init`.\n")
return 1
if args.client:
try:
clients = select_clients(args.client, False)
except ValueError as error:
sys.stderr.write("casan doctor: %s\n" % error)
return 64
else:
clients = config.get("clients") or []
harness = resolve_project_harness(target, args.harness)
lock = _load_json_or(os.path.join(target, ".casan", "version.lock"), {})
expected = lock.get("harness_hash")
actual, source = compute_live(harness) if harness else ("unavailable", "error")
integrity_ok = bool(expected and expected == actual)
bootstrap_ok = os.path.isfile(os.path.join(target, ".casan", "casan-hook.py"))
checks = {
"project": target,
"project_id": config.get("project_id"),
"enforcement_mode": config.get("enforcement_mode"),
"integration_mode": config.get("integration_mode"),
"clients": clients,
"harness_root": harness,
"integrity": {
"ok": integrity_ok,
"expected": expected,
"actual": actual,
"source": source,
},
"bootstrap": {"ok": bootstrap_ok},
"client_checks": {},
"warnings": [],
}
ready = integrity_ok and bootstrap_ok
vendored_harness = os.path.isfile(os.path.join(
target, "packages", "casan-harness", "scripts", "bash",
"casan-harness.sh"))
legacy_conflicts = _legacy_instruction_conflicts(target)
checks["legacy_migration"] = {
"vendored_harness_present": vendored_harness,
"vendored_harness_status": (
"retained_for_compatibility" if vendored_harness else "not_present"),
"instruction_files_requiring_review": legacy_conflicts,
}
code = shutil.which("code")
installed_extensions = set()
if code:
listed = subprocess.run(
[code, "--list-extensions"], stdout=subprocess.PIPE,
stderr=subprocess.PIPE, text=True, check=False)
if listed.returncode == 0:
installed_extensions = {
line.strip().lower() for line in listed.stdout.splitlines() if line.strip()}
for client in clients:
surface = CLIENT_SURFACES.get(client, {})
item = {
"configured": True,
"supported_surfaces": list(surface.get("supported_local", [])),
"not_covered_surfaces": list(surface.get("not_covered", [])),
"surface_contract": surface.get("contract"),
}
if client == "claude":
commands = _commands_in_hooks(
os.path.join(target, ".claude", "settings.json"))
item["hook_present"] = any(
"casan-hook.py" in command and "--client claude" in command
for command in commands)
item["vscode_extension_installed"] = (
"anthropic.claude-code" in installed_extensions if code else None)
elif client == "codex":
commands = _commands_in_hooks(
os.path.join(target, ".codex", "hooks.json"))
item["hook_present"] = any(
"casan-hook.py" in command and "--client codex" in command
for command in commands)
item["trust_review_required"] = True
item["trust_action"] = "Open /hooks in Codex and trust the current project hook hash."
item["vscode_extension_installed"] = (
"openai.chatgpt" in installed_extensions if code else None)
elif client == "vscode-copilot":
item["hook_present"] = bootstrap_ok
item["route"] = "explicit_@casan"
item["native_copilot_interception"] = False
item["code_cli"] = code
item["extension_installed"] = (
"fpt-casan.casan-governed-chat" in installed_extensions
if code else False)
if not item["extension_installed"]:
item["install_action"] = (
"Re-run `casan init --client vscode-copilot "
"--vscode-install yes` with the VS Code `code` CLI on PATH.")
else:
item["hook_present"] = False
if bootstrap_ok and item.get("hook_present"):
item["smoke"] = _smoke_bootstrap(target, client)
else:
item["smoke"] = {"ok": False, "reason": "configuration_missing"}
client_ready = bool(item.get("hook_present") and item["smoke"].get("ok"))
if client == "vscode-copilot":
client_ready = client_ready and bool(item.get("extension_installed"))
item["ready"] = client_ready
ready = ready and client_ready
checks["client_checks"][client] = item
if "codex" in clients:
checks["warnings"].append(
"Codex project hooks do not run until their exact hash is reviewed and trusted via /hooks.")
if "vscode-copilot" in clients:
checks["warnings"].append(
"Only prompts explicitly sent to @casan use the CASAN-owned Copilot route; "
"built-in Copilot chat is not globally intercepted.")
if vendored_harness:
checks["warnings"].append(
"A legacy vendored packages/casan-harness is retained. Remove it only "
"after CI, bin scripts, and domain smoke tests use the global harness.")
if legacy_conflicts:
checks["warnings"].append(
"Legacy prompt-boundary prose outside CASAN-managed markers conflicts "
"with Plan-20 hooks and needs manual review: %s." %
", ".join(legacy_conflicts))
checks["status"] = "ready" if ready else "not_ready"
_emit_json_or_human(args, checks, _render_doctor)
return 0 if ready else 2
def _clean_integration_json(path, metadata_key, metadata_prefix, remove_if_empty):
"""Remove CASAN template metadata and delete a CASAN-created empty file."""
if not os.path.isfile(path):
return False
doc = _load_json_or(path, None)
if not isinstance(doc, dict):
return False
metadata = doc.get(metadata_key)
if isinstance(metadata, str) and metadata.startswith(metadata_prefix):
doc.pop(metadata_key, None)
hooks = doc.get("hooks")
if isinstance(hooks, dict) and not hooks:
doc.pop("hooks", None)
recommendations = doc.get("recommendations")
if isinstance(recommendations, list) and not recommendations:
doc.pop("recommendations", None)
with owner_writable(path):
if not doc and remove_if_empty:
os.unlink(path)
else:
with open(path, "w", encoding="utf-8") as fh:
fh.write(json.dumps(doc, ensure_ascii=False, indent=2) + "\n")
return True
def _remove_owned_file(path, removed, target):
if not os.path.isfile(path) and not os.path.islink(path):
return
with owner_writable(path):
os.unlink(path)
removed.append(os.path.relpath(path, target).replace(os.sep, "/"))
def _prune_empty_directory(path):
try:
os.rmdir(path)
except OSError:
pass
def _prune_empty_parents(path, target):
parent = os.path.dirname(path)
while parent and parent != target:
try:
os.rmdir(parent)
except OSError:
break
parent = os.path.dirname(parent)
def _remove_owned_project_artifacts(target, owned_files, owned_file_hashes):
"""Remove safe standalone artifacts while preserving merged/user content."""
removed = []
retained = []
integration_owned_files = {
".claude/settings.json",
".codex/hooks.json",
".codex/config.toml",
".vscode/extensions.json",
".specify/.gitignore",
}
for relative in sorted(
owned_files, key=lambda item: (item.count("/"), item),
reverse=True):
if (relative in integration_owned_files or
relative.startswith(".casan/")):
continue
path = _safe_project_path(target, relative)
if not path:
retained.append("%s (invalid ownership path)" % relative)
continue
if not os.path.isfile(path) and not os.path.islink(path):
continue
expected_hash = owned_file_hashes.get(relative)
current_hash = _file_sha256(path)
casan_namespaced_workflow = (
relative.startswith(".gitea/workflows/casan-") and
relative.endswith((".yml", ".yaml")))
if casan_namespaced_workflow or (
expected_hash and current_hash == expected_hash):
_remove_owned_file(path, removed, target)
_prune_empty_parents(path, target)
else:
retained.append(
"%s (modified or legacy file; preserved)" % relative)
return removed, retained
def _uninstall_vscode_extension(enabled):
if not enabled:
return {
"status": "retained_shared",
"reason": "use --remove-vscode-extension to remove it from this machine",
}
code = shutil.which("code")
if not code:
return {"status": "not_removed", "reason": "code_cli_not_found"}
result = subprocess.run(
[code, "--uninstall-extension", "fpt-casan.casan-governed-chat"],
stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=False)
return {
"status": "uninstalled" if result.returncode == 0 else "failed",
"command": code,
"detail": (result.stdout or result.stderr).strip(),
}
def cmd_uninstall(args):
"""Remove one project's CASAN adoption without clobbering user config."""
target = os.path.abspath(args.target or os.getcwd())
config_path = os.path.join(target, ".casan", "config.json")
manifest_path = os.path.join(target, ".casan", "init-manifest.json")
config = _load_json_or(config_path, {})
manifest = _load_json_or(manifest_path, {})
specify_gitignore = os.path.join(target, ".specify", ".gitignore")
try:
with open(specify_gitignore, "r", encoding="utf-8") as fh:
has_casan_evidence = fh.read().startswith(
"# CASAN runtime state — do not commit")
except OSError:
has_casan_evidence = False
if (not config and not manifest and
not (args.purge and has_casan_evidence)):
sys.stderr.write(
"casan uninstall: project is not initialized; nothing to remove.\n")
return 1
created = {
str(path).replace("\\", "/")
for path in manifest.get("created", [])
if isinstance(path, str)
}
owned_files = {
str(path).replace("\\", "/")
for path in manifest.get("owned_files", [])
if isinstance(path, str)
}
owned_file_hashes = {
str(path).replace("\\", "/"): digest
for path, digest in manifest.get("owned_file_hashes", {}).items()
if isinstance(path, str) and isinstance(digest, str)
}
hook_changes = {}
integration_files = (
(".claude/settings.json", "claude_hook.py", "casan-hook.py"),
(".codex/hooks.json", "codex_hook.py", "casan-hook.py"),
)
for relative, legacy_marker, current_marker in integration_files:
path = os.path.join(target, *relative.split("/"))
legacy = remove_json_hooks(path, legacy_marker, None)
current = remove_json_hooks(path, current_marker, None)
status = "removed" if "removed" in (legacy, current) else current
hook_changes[relative] = status
codex_config = os.path.join(target, ".codex", "config.toml")
hook_changes[".codex/config.toml"] = clean_legacy_codex_config(
codex_config, None)
vscode_path = os.path.join(target, ".vscode", "extensions.json")
hook_changes[".vscode/extensions.json"] = merge_vscode_recommendations(
vscode_path, [], None)
_clean_integration_json(
os.path.join(target, ".claude", "settings.json"),
"//", "CASAN Plan-20", ".claude/settings.json" in owned_files)
_clean_integration_json(
os.path.join(target, ".codex", "hooks.json"),
"description", "CASAN Plan-20", ".codex/hooks.json" in owned_files)
_clean_integration_json(
vscode_path, "_casan_unused", "",
".vscode/extensions.json" in owned_files)
removed, retained = _remove_owned_project_artifacts(
target, owned_files, owned_file_hashes)
if _remove_vendored_core(target):
removed.append(".casan/runtime/casan-core")
for relative in (
".casan/config.json",
".casan/version.lock",
".casan/agentic.env",
".casan/casan-hook.py",
".casan/init-manifest.json"):
_remove_owned_file(
os.path.join(target, *relative.split("/")), removed, target)
if args.purge:
for relative in (".specify/logs", ".specify/state"):
path = os.path.join(target, *relative.split("/"))
if os.path.isdir(path):
with owner_writable(path):
shutil.rmtree(path)
removed.append(relative)
if has_casan_evidence:
_remove_owned_file(specify_gitignore, removed, target)
for relative in (
".casan", ".claude", ".codex", ".vscode", ".specify"):
_prune_empty_directory(os.path.join(target, relative))
if not args.purge and os.path.isdir(os.path.join(target, ".specify")):
retained.append(".specify/ runtime evidence (use --purge to remove)")
backups = manifest.get("backups", [])
if backups:
retained.append("%d .casan-bak backup(s)" % len(backups))
result = {
"status": "uninstalled",
"project_id": config.get("project_id") or manifest.get("project_id"),
"target": target,
"hook_changes": hook_changes,
"removed": removed,
"purged": bool(args.purge),
"vscode_extension": _uninstall_vscode_extension(
args.remove_vscode_extension),
"retained": retained,
}
_emit_json_or_human(args, result, _render_uninstall)
return 0
def main(argv=None):
parser = argparse.ArgumentParser(
prog="casan-init",
description="Adopt CASAN governance into an existing project")
sub = parser.add_subparsers(dest="cmd")
pi = sub.add_parser(
"init",
help="adopt or reconfigure CASAN in the current project",
description=(
"Adopt CASAN governance into an existing project. New interactive "
"projects are guided through runtime and client selection; existing "
"projects preserve their current runtime unless --runtime is set."),
epilog=(
"examples:\n"
" casan init\n"
" casan init --runtime managed --client claude,codex\n"
" casan init --runtime vendored --client codex\n"
" casan init --non-interactive --runtime managed --client none"),
formatter_class=argparse.RawDescriptionHelpFormatter)
pi.add_argument("--target", help="project root (default: cwd)")
pi.add_argument("--project", help="project id (^[a-z][a-z0-9-]{1,62}$; default: dir name)")
pi.add_argument(
"--client", action="append",
help=("integration to enable; repeat or comma-separate: claude, codex, "
"vscode-copilot, all, none. Interactive init shows a menu."))
pi.add_argument(
"--non-interactive", action="store_true",
help=("do not prompt; new projects default to managed runtime and the "
"backward-compatible claude,codex client set"))
pi.add_argument(
"--vscode-install", choices=["auto", "yes", "no"], default="auto",
help=("install the local CASAN @casan VSIX when vscode-copilot is selected "
"(default auto: install when `code` is available)"))
pi.add_argument("--level", default="core",
help="packaging level to adopt: 1|core (default), 2|devkit, 3|platform (preview), 4|enterprise (refused)")
pi.add_argument(
"--runtime", choices=["managed", "vendored"],
help=("Core runtime placement: managed uses the pinned global install "
"(default for new adoption); vendored copies a production-only "
"Core into the project; re-init preserves the current mode"))
pi.add_argument("--mode", choices=["observe", "enforce"], default="enforce",
help="agentic policy mode (default: enforce; use observe for a telemetry-only pilot)")
pi.add_argument("--integration-mode", dest="integration_mode",
choices=["project_hook", "managed_hook", "casan_owned"], default="project_hook")
pi.add_argument("--force", action="store_true",
help="bypass the source-hub safety guard (adopt CASAN into a CASAN checkout)")
pi.add_argument("--harness", help="override harness root")
pi.add_argument("--json", action="store_true",
help="emit the complete machine-readable result")
pv = sub.add_parser("verify", help="verify the resolved harness matches the project pin")
pv.add_argument("--target", help="project root (default: cwd)")
pv.add_argument("--harness", help="override harness root")
pv.add_argument("--json", action="store_true",
help="emit the complete machine-readable result")
pl = sub.add_parser("level", help="show installed + project packaging level")
pl.add_argument("--show", action="store_true", help="(default) show levels")
pl.add_argument("--target", help="project root (default: cwd)")
pl.add_argument("--harness", help="override harness root")
pl.add_argument("--json", action="store_true",
help="emit the complete machine-readable result")
pd = sub.add_parser("doctor", help="verify selected client integrations end-to-end")
pd.add_argument("--target", help="project root (default: cwd)")
pd.add_argument("--client", action="append",
help="client(s) to check; default: clients enabled in config")
pd.add_argument("--harness", help="override harness root")
pd.add_argument("--json", action="store_true",
help="emit the complete machine-readable result")
pu = sub.add_parser(
"uninstall",
help="remove CASAN from a project while preserving user configuration")
pu.add_argument("--target", help="project root (default: cwd)")
pu.add_argument(
"--purge", action="store_true",
help="also remove .specify runtime logs and state")
pu.add_argument(
"--remove-vscode-extension", action="store_true",
help="also uninstall the shared @casan VS Code extension from this machine")
pu.add_argument("--json", action="store_true",
help="emit the complete machine-readable result")
args = parser.parse_args(argv)
if args.cmd == "init":
try:
return cmd_init(args)
except PermissionError as error:
sys.stderr.write(
"casan init: permission denied while merging project config: "
"%s\n" % error)
return 77
if args.cmd == "verify":
return cmd_verify(args)
if args.cmd == "level":
return cmd_level(args)
if args.cmd == "doctor":
return cmd_doctor(args)
if args.cmd == "uninstall":
return cmd_uninstall(args)
parser.print_help()
return 64
if __name__ == "__main__":
sys.exit(main())