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Media-Server-Setup/bin/dumpd.py

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#!/usr/bin/env python3
"""Dump-tonight endpoint. Moves one streamer's night into trash (soft delete).
POST /dump identity from X-Authentik-Username / X-Authentik-Groups (set by Caddy after Authentik)
body (optional JSON): {"night":"YYYY-MM-DD","user":"name"}
GET /dump -> lists what a dump would move (dry run)
GET /me/stream-token -> short-lived publish token for the caller (member of streamers/admins); the dock
and the live portal set it as the OBS/WHIP credential. No stored passwords anywhere.
GET /me/clips -> Syncthing self-service status for the caller: our device id, their folder/device state
POST /me/clips -> {"device_id": "..."}: create clips/<user> (+ .stignore), add their device to our Syncthing,
create the receive-only folder clips-<user> shared with them (min free 300 GB). Idempotent.
POST /mtx-auth -> MediaMTX authHTTP hook: allows read/playback; allows publish iff user/pass carries a valid
token whose user owns the path prefix. Tokens are HMAC-signed with /etc/vanguard/stream-token.secret.
"Night" = everything the user recorded from 17:00 Eastern on <night> until 02:00 Eastern the next day.
Default night: today if it is 17:00 or later, else yesterday (so 00:00-02:00 still counts as last night).
Users may dump only their own prefix; members of the admins / media-admins groups may pass "user" to dump anyone, or "all".
"""
import base64, hashlib, hmac, json, os, re, shutil, sys
import time as _time
from datetime import datetime, timedelta, time
from zoneinfo import ZoneInfo
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
from pathlib import Path
ROOT = Path(os.environ.get("MEDIA_ROOT", "/srv/media"))
SRC_DIRS = [ROOT / "streams", ROOT / "clips"]
TRASH = ROOT / "trash"
MARK = ROOT / ".markers"
TOKEN_SECRET_FILE = Path(os.environ.get("STREAM_TOKEN_SECRET_FILE", "/etc/vanguard/stream-token.secret"))
TOKEN_TTL_H = float(os.environ.get("STREAM_TOKEN_TTL_HOURS", "12"))
PUBLISH_GROUPS = set(g.strip() for g in os.environ.get("PUBLISH_GROUPS", "streamers,admins,media-admins").split(",") if g.strip())
AUTH_USER_HEADER = os.environ.get("AUTH_USER_HEADER", "X-Authentik-Username")
AUTH_GROUPS_HEADER = os.environ.get("AUTH_GROUPS_HEADER", "X-Authentik-Groups")
ADMIN_GROUPS = set(g.strip() for g in os.environ.get("DUMP_ADMIN_GROUPS", "admins,media-admins").split(",") if g.strip())
LISTEN = ("127.0.0.1", 8080) # /dump, /me/* — only via Caddy (identity headers)
AUTH_LISTEN = (os.environ.get("MTX_AUTH_BIND", "0.0.0.0"), int(os.environ.get("MTX_AUTH_PORT", "8081"))) # /mtx-auth only — reachable from Docker's bridge (firewall), used by MediaMTX
TZ = ZoneInfo(os.environ.get("DUMP_TZ", "America/New_York"))
NIGHT_START = time(17, 0) # 5 pm
NIGHT_END = time(2, 0) # 2 am next day
def identity(headers):
"""(username, is_admin) from the headers Caddy sets after Authentik; (None, False) if absent.
dumpd binds to loopback only, so these headers can only come from Caddy."""
who = (headers.get(AUTH_USER_HEADER) or "").strip().lower()
if not who:
return None, False
groups = {g.strip() for g in re.split(r"[|,]", headers.get(AUTH_GROUPS_HEADER) or "") if g.strip()}
return who, bool(groups & ADMIN_GROUPS)
def default_night(now=None):
now = now or datetime.now(TZ)
d = now.date() if now.time() >= NIGHT_START else (now - timedelta(days=1)).date()
return d.isoformat()
def night_window(night):
d = datetime.strptime(night, "%Y-%m-%d").date()
return (datetime.combine(d, NIGHT_START, tzinfo=TZ),
datetime.combine(d + timedelta(days=1), NIGHT_END, tzinfo=TZ))
def candidates(user, night):
start, end = night_window(night)
out = []
for base in SRC_DIRS:
udirs = [p for p in base.iterdir() if p.is_dir()] if user == "all" else [base / user]
for ud in udirs:
if not ud.is_dir():
continue
for f in ud.rglob("*"):
if not f.is_file():
continue
mt = datetime.fromtimestamp(f.stat().st_mtime, TZ)
if start <= mt <= end:
out.append(f)
return out
def do_move(files, night):
moved, size = 0, 0
for f in files:
rel = f.relative_to(ROOT)
dst = TRASH / night / rel
dst.parent.mkdir(parents=True, exist_ok=True)
try:
size += f.stat().st_size
shutil.move(str(f), str(dst))
moved += 1
except FileNotFoundError:
pass
# drop now-empty title folders
for base in SRC_DIRS:
for d in sorted((p for p in base.rglob("*") if p.is_dir()), key=lambda p: -len(p.parts)):
if d.parent != base and not any(d.iterdir()):
d.rmdir()
return moved, size
# ------------------------------------------------------------------ Syncthing (self-service clip intake)
import urllib.request, urllib.error
ST_URL = os.environ.get("SYNCTHING_URL", "http://127.0.0.1:8384")
ST_CONFIG = Path(os.environ.get("SYNCTHING_CONFIG", "/srv/media/.syncthing/config.xml"))
ST_CLIPS_PREFIX = os.environ.get("SYNCTHING_CLIPS_PREFIX", "/var/syncthing/clips") # path INSIDE the syncthing container
STIGNORE_SRC = Path(os.environ.get("STIGNORE_SRC", "/etc/vanguard/stignore"))
MIN_FREE_GB = int(os.environ.get("CLIPS_MIN_FREE_GB", "300"))
def st_apikey():
try:
m = re.search(r"<apikey>([^<]+)</apikey>", ST_CONFIG.read_text())
return m.group(1) if m else None
except OSError:
return None
def st(method, path, body=None):
key = st_apikey()
if not key: raise RuntimeError("syncthing api key not found")
data = json.dumps(body).encode() if body is not None else None
req = urllib.request.Request(ST_URL + path, data=data, method=method, headers={"X-API-Key": key, "Content-Type": "application/json"})
with urllib.request.urlopen(req, timeout=10) as r:
raw = r.read()
return json.loads(raw) if raw else None
DEVICE_ID_RE = re.compile(r"^[A-Z2-7]{7}(-[A-Z2-7]{7}){7}$")
def clips_status(user):
out = {"user": user, "folder_id": f"clips-{user}", "server_path": f"{ROOT}/clips/{user}"}
try:
out["server_device_id"] = st("GET", "/rest/system/status")["myID"]
cfg_devices = st("GET", "/rest/config/devices")
cfg_folders = st("GET", "/rest/config/folders")
folder = next((f for f in cfg_folders if f["id"] == out["folder_id"]), None)
out["folder_configured"] = folder is not None
theirs = [d["deviceID"] for d in (folder or {}).get("devices", []) if d["deviceID"] != out["server_device_id"]]
out["device_id"] = theirs[0] if theirs else None
if out["device_id"]:
conns = st("GET", "/rest/system/connections")["connections"]
out["device_connected"] = bool(conns.get(out["device_id"], {}).get("connected"))
out["device_name"] = next((d["name"] for d in cfg_devices if d["deviceID"] == out["device_id"]), None)
try:
comp = st("GET", f"/rest/db/completion?folder={out['folder_id']}&device={out['device_id']}")
out["remote_completion"] = comp.get("completion")
except Exception:
pass
try:
stt = st("GET", f"/rest/db/status?folder={out['folder_id']}")
out["files_here"] = stt.get("localFiles"); out["state"] = stt.get("state")
except Exception:
pass
except Exception as e:
out["error"] = f"syncthing: {e}"
out["folder_exists"] = Path(out["server_path"]).is_dir()
return out
def clips_setup(user, device_id, device_name=None):
device_id = device_id.strip().upper()
if not DEVICE_ID_RE.match(device_id):
raise ValueError("that does not look like a Syncthing Device ID (8 groups of 7 characters, e.g. ABCDEFG-HIJKLMN-...)")
# 1. server folder with the video-only ignore list
d = Path(ROOT) / "clips" / user
d.mkdir(parents=True, exist_ok=True); shutil.chown(d, 1000, 1000)
ign = d / ".stignore"
if not ign.exists() and STIGNORE_SRC.exists():
ign.write_text(STIGNORE_SRC.read_text()); shutil.chown(ign, 1000, 1000); ign.chmod(0o644)
# 2. their device
my_id = st("GET", "/rest/system/status")["myID"]
if device_id == my_id: raise ValueError("that is the server's own Device ID — paste yours (your Syncthing → Actions → Show ID)")
devices = st("GET", "/rest/config/devices")
if not any(x["deviceID"] == device_id for x in devices):
st("POST", "/rest/config/devices", {"deviceID": device_id, "name": device_name or user, "addresses": ["dynamic"],
"autoAcceptFolders": False, "introducer": False, "paused": False})
# 3. receive-only folder shared with them
fid = f"clips-{user}"
folders = st("GET", "/rest/config/folders")
cur = next((f for f in folders if f["id"] == fid), None)
spec = {"id": fid, "label": f"Clips — {user}", "path": f"{ST_CLIPS_PREFIX}/{user}", "type": "receiveonly",
"devices": [{"deviceID": my_id}, {"deviceID": device_id}],
"minDiskFree": {"value": MIN_FREE_GB, "unit": "GB"}, "fsWatcherEnabled": True, "rescanIntervalS": 3600,
"ignorePerms": True, "ignoreDelete": False}
if cur is None:
st("POST", "/rest/config/folders", spec)
else:
if not any(x["deviceID"] == device_id for x in cur.get("devices", [])):
cur["devices"].append({"deviceID": device_id})
cur["type"] = "receiveonly"; cur["minDiskFree"] = spec["minDiskFree"]
st("PUT", f"/rest/config/folders/{fid}", cur)
print(f"{datetime.now(TZ):%F %T} clips setup user={user} device={device_id[:7]}… folder={fid}", flush=True)
return clips_status(user)
def token_secret():
try:
sec = TOKEN_SECRET_FILE.read_bytes().strip()
if len(sec) >= 16: return sec
except OSError:
pass
return None
def mint_token(user):
"""user|exp signed: <b64url(user|exp)>.<hmac hex[:40]> — URL/RTMP/SRT-safe characters only."""
sec = token_secret()
if not sec: raise RuntimeError("no stream token secret")
exp = int(_time.time() + TOKEN_TTL_H * 3600)
payload = f"{user}|{exp}".encode()
sig = hmac.new(sec, payload, hashlib.sha256).hexdigest()[:40]
return base64.urlsafe_b64encode(payload).decode().rstrip("=") + "." + sig, exp
def verify_token(token):
"""-> username or None"""
sec = token_secret()
if not sec or not token or "." not in token: return None
b64, sig = token.rsplit(".", 1)
try:
payload = base64.urlsafe_b64decode(b64 + "=" * (-len(b64) % 4))
except Exception:
return None
if not hmac.compare_digest(hmac.new(sec, payload, hashlib.sha256).hexdigest()[:40], sig): return None
try:
user, exp = payload.decode().split("|", 1)
if int(exp) < _time.time(): return None
except Exception:
return None
return user.lower()
class H(BaseHTTPRequestHandler):
server_version = "dumpd/1"
def _json(self, code, obj):
body = json.dumps(obj).encode()
self.send_response(code)
self.send_header("Content-Type", "application/json")
self.send_header("Content-Length", str(len(body)))
self.end_headers()
self.wfile.write(body)
def _deny(self):
self._json(401, {"error": "not authenticated (no identity header from the proxy)"})
def _parse(self):
n = int(self.headers.get("Content-Length") or 0)
body = json.loads(self.rfile.read(n) or b"{}") if n else {}
night = body.get("night")
if night:
datetime.strptime(night, "%Y-%m-%d") # validate
return night, body.get("user")
def _resolve(self, night, tgt):
"""Explicit night wins. Otherwise: tonight, falling back to last night if tonight is empty."""
if night:
return night, candidates(tgt, night)
n = default_night()
files = candidates(tgt, n)
if not files:
prev = (datetime.strptime(n, "%Y-%m-%d") - timedelta(days=1)).strftime("%Y-%m-%d")
pf = candidates(tgt, prev)
if pf:
return prev, pf
return n, files
def _target(self, auth_user, is_admin, req_user):
if is_admin:
return req_user or auth_user # admins default to their own night; pass "all" or a name for others
return auth_user
def do_GET(self):
if self.server.server_port == AUTH_LISTEN[1]:
return self._json(404, {"error": "not found"}) # the auth port serves POST /mtx-auth only
if self.path.startswith("/time"):
# server clock for the timecode strip (the /clock/ page and Go Live measure their offset against this)
return self._json(200, {"now_ms": int(_time.time() * 1000)})
if self.path == "/me" or self.path == "/me/":
who, is_admin = identity(self.headers)
if not who: return self._json(401, {"error": "not authenticated"})
groups = sorted({g.strip() for g in re.split(r"[|,]", self.headers.get(AUTH_GROUPS_HEADER) or "") if g.strip()})
return self._json(200, {"user": who, "groups": groups, "admin": is_admin,
"name": self.headers.get("X-Authentik-Name") or who, "email": self.headers.get("X-Authentik-Email") or ""})
if self.path.startswith("/me/clips"):
who, _ = identity(self.headers)
if not who: return self._json(401, {"error": "not authenticated"})
return self._json(200, clips_status(who))
if self.path.startswith("/me/stream-token") or self.path.startswith("/me/stream-key"):
# Only reachable through Caddy behind Authentik forward-auth, which injects the identity headers.
who, _ = identity(self.headers)
if not who:
return self._json(401, {"error": "not authenticated"})
groups = {g.strip() for g in re.split(r"[|,]", self.headers.get(AUTH_GROUPS_HEADER) or "") if g.strip()}
if not (groups & PUBLISH_GROUPS):
return self._json(403, {"error": f"'{who}' is not in a publishing group ({', '.join(sorted(PUBLISH_GROUPS))}) — ask an admin for the Discord role"})
try:
tok, exp = mint_token(who)
except RuntimeError as e:
return self._json(500, {"error": str(e)})
# "pass" kept for the dock/portal: the token IS the password for MediaMTX
return self._json(200, {"user": who, "pass": tok, "token": tok, "expires": exp, "ttl_hours": TOKEN_TTL_H})
if not self.path.startswith("/dump"):
return self._json(404, {"error": "not found"})
u, is_admin = identity(self.headers)
if not u:
return self._deny()
night, req_user = self._parse()
tgt = self._target(u, is_admin, req_user)
night, files = self._resolve(night, tgt)
self._json(200, {"night": night, "user": tgt, "dry_run": True,
"files": [str(f.relative_to(ROOT)) for f in files],
"gb": round(sum(f.stat().st_size for f in files) / 1e9, 2)})
def do_POST(self):
if self.server.server_port == AUTH_LISTEN[1] and not self.path.startswith("/mtx-auth"):
return self._json(404, {"error": "not found"})
if self.path.startswith("/mtx-auth"):
# MediaMTX authHTTP: 200 = allow, anything else = deny. Body: user, password, token, ip, action, path, protocol, id, query
n = int(self.headers.get("Content-Length") or 0)
try:
req = json.loads(self.rfile.read(n) or b"{}")
except json.JSONDecodeError:
return self._json(400, {"error": "bad json"})
action = req.get("action", "")
if action in ("read", "playback"):
return self._json(200, {"ok": True}) # viewers are gated by Caddy + Authentik
if action != "publish":
return self._json(401, {"error": f"action {action} not allowed"})
cred = req.get("password") or req.get("token") or ""
if cred.lower().startswith("bearer "): cred = cred[7:]
if ":" in cred and "." in cred.split(":", 1)[1]: cred = cred.split(":", 1)[1] # "user:token" form
user = verify_token(cred)
path = (req.get("path") or "").lower()
if not user:
print(f"{datetime.now(TZ):%F %T} mtx-auth DENY publish path={path} ip={req.get('ip')} (bad/expired token)", flush=True)
return self._json(401, {"error": "invalid or expired stream token"})
if not re.fullmatch(r"[a-z0-9_.-]+/[a-z0-9_.-]+", path) or not path.startswith(user + "/"):
print(f"{datetime.now(TZ):%F %T} mtx-auth DENY publish user={user} path={path} (not their prefix)", flush=True)
return self._json(401, {"error": "path must be <your-username>/<Title>"})
print(f"{datetime.now(TZ):%F %T} mtx-auth allow publish user={user} path={path} ip={req.get('ip')}", flush=True)
return self._json(200, {"ok": True})
if self.path.startswith("/me/clips"):
who, _ = identity(self.headers)
if not who: return self._json(401, {"error": "not authenticated"})
n = int(self.headers.get("Content-Length") or 0)
try:
body = json.loads(self.rfile.read(n) or b"{}")
return self._json(200, clips_setup(who, str(body.get("device_id", "")), body.get("device_name")))
except ValueError as e:
return self._json(400, {"error": str(e)})
except Exception as e:
return self._json(502, {"error": f"syncthing: {e}"})
if not self.path.startswith("/dump"):
return self._json(404, {"error": "not found"})
u, is_admin = identity(self.headers)
if not u:
return self._deny()
try:
night, req_user = self._parse()
except Exception as e:
return self._json(400, {"error": str(e)})
tgt = self._target(u, is_admin, req_user)
night, files = self._resolve(night, tgt)
moved, size = do_move(files, night)
MARK.mkdir(exist_ok=True)
(MARK / f"{night}-{tgt}.dumped").write_text(f"{datetime.now(TZ).isoformat()} by {u}\n")
print(f"{datetime.now(TZ):%F %T} dump night={night} user={tgt} by={u} files={moved} gb={size/1e9:.2f}", flush=True)
self._json(200, {"night": night, "user": tgt, "moved": moved, "gb": round(size / 1e9, 2),
"undo_until": (datetime.now(TZ) + timedelta(days=3)).strftime("%F")})
def log_message(self, *a): # quiet
pass
if __name__ == "__main__":
TRASH.mkdir(exist_ok=True); MARK.mkdir(exist_ok=True)
import threading
print(f"dumpd listening on {LISTEN[0]}:{LISTEN[1]} (dump, me) and {AUTH_LISTEN[0]}:{AUTH_LISTEN[1]} (mtx-auth) tz={TZ.key} night={NIGHT_START:%H:%M}-{NIGHT_END:%H:%M} token-secret={'ok' if token_secret() else 'MISSING'}", flush=True)
auth_srv = ThreadingHTTPServer(AUTH_LISTEN, H)
threading.Thread(target=auth_srv.serve_forever, daemon=True).start()
ThreadingHTTPServer(LISTEN, H).serve_forever()
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