Major upgrades, much code and docs rewritten.
This commit is contained in:
parent
27b89d6d38
commit
bd680e3668
10
README.md
10
README.md
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@ -1,12 +1,10 @@
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# Web File Storage
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Development install:
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Run directly from repository with Hatch (or use pip install as usual):
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```sh
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pip install hatch --break-system-packages
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hatch run sanic cista --reload --dev # Runs on localhost:8000
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hatch run sanic cista --reload --dev
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```
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Environment variable `STORAGE=<path>` may be used to choose which folder it serves. The default is current directory.
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Configuration file is created `.cista.toml` in current directory, which is also shared by default. Edit while the server is not running to set share path and other parameters.
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No authentication is supported, so implement access control externally or be careful with your files.
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No authentication yet, so implement access control externally or be careful with your files.
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50
cista/app.py
50
cista/app.py
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@ -1,13 +1,10 @@
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import asyncio
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from importlib.resources import files
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from pathlib import Path
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import msgspec
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from sanic import Sanic
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from sanic.log import logger
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from sanic.response import html
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from watchdog.events import FileSystemEventHandler
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from watchdog.observers import Observer
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from . import watching
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from .fileio import ROOT, FileServer
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@ -15,6 +12,7 @@ from .protocol import ErrorMsg, FileRange, StatusMsg
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app = Sanic("cista")
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fileserver = FileServer()
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watching.register(app, "/api/watch")
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def asend(ws, msg):
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return ws.send(msg if isinstance(msg, bytes) else msgspec.json.encode(msg).decode())
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@ -27,22 +25,6 @@ async def start_fileserver(app, _):
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async def stop_fileserver(app, _):
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await fileserver.stop()
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@app.before_server_start
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async def start_watcher(app, _):
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class Handler(FileSystemEventHandler):
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def on_any_event(self, event):
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watching.update(Path(event.src_path).relative_to(ROOT))
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app.ctx.observer = Observer()
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app.ctx.observer.schedule(Handler(), str(ROOT), recursive=True)
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app.ctx.observer.start()
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@app.after_server_stop
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async def stop_watcher(app, _):
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app.ctx.observer.stop()
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app.ctx.observer.join()
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@app.get("/")
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async def index_page(request):
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index = files("cista").joinpath("static", "index.html").read_text()
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@ -50,16 +32,6 @@ async def index_page(request):
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app.static("/files", ROOT, use_content_range=True, stream_large_files=True, directory_view=True)
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@app.websocket('/api/watch')
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async def watch(request, ws):
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try:
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q = watching.pubsub[ws] = asyncio.Queue()
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await asend(ws, {"root": watching.tree})
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while True:
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await asend(ws, await q.get())
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finally:
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del watching.pubsub[ws]
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@app.websocket('/api/upload')
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async def upload(request, ws):
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alink = fileserver.alink
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@ -78,24 +50,28 @@ async def upload(request, ws):
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d = f"{len(data)} bytes" if isinstance(data, bytes) else data
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raise ValueError(f"Expected {req.end - pos} more bytes, got {d}")
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# Report success
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res = StatusMsg(status="upload", url=url, req=req)
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res = StatusMsg(status="ack", req=req)
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await asend(ws, res)
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print(res)
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await ws.drain()
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except Exception as e:
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res = ErrorMsg(error=str(e), url=url, req=req)
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res = ErrorMsg(error=str(e), req=req)
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await asend(ws, res)
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logger.exception(repr(res), e)
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return
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@app.websocket("/ws")
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async def ws(request, ws):
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while True:
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data = await ws.recv()
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await ws.send(data)
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@app.websocket('/api/download')
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async def download(request, ws):
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alink = fileserver.alink
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url = request.url_for("download")
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while True:
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req = None
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try:
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print("Waiting for download command")
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text = await ws.recv()
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if not isinstance(text, str):
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raise ValueError(f"Expected JSON control, got binary len(data) = {len(text)}")
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@ -108,12 +84,14 @@ async def download(request, ws):
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await asend(ws, data)
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pos += len(data)
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# Report success
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res = StatusMsg(status="download", url=url, req=req)
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res = StatusMsg(status="ack", req=req)
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await asend(ws, res)
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print(ws, dir(ws))
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await ws.drain()
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print(res)
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except Exception as e:
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res = ErrorMsg(error=str(e), url=url, req=req)
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res = ErrorMsg(error=str(e), req=req)
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await asend(ws, res)
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logger.exception(repr(res), e)
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return
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156
cista/config.py
Normal file
156
cista/config.py
Normal file
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@ -0,0 +1,156 @@
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from __future__ import annotations
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import hmac
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import re
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import secrets
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from functools import wraps
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from hashlib import sha256
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from pathlib import Path, PurePath
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from time import time
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from unicodedata import normalize
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import argon2
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import msgspec
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_argon = argon2.PasswordHasher()
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_droppyhash = re.compile(r'^([a-f0-9]{64})\$([a-f0-9]{8})$')
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class Config(msgspec.Struct):
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path: Path = Path.cwd()
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secret: str = secrets.token_hex(12)
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public: bool = False
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users: dict[str, User] = {}
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sessions: dict[str, Session] = {}
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links: dict[str, Link] = {}
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class User(msgspec.Struct, omit_defaults=True):
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privileged: bool = False
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hash: str = ""
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lastSeen: int = 0
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def set_password(self, password: str):
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self.hash = _argon.hash(_pwnorm(password))
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class Session(msgspec.Struct):
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username: str
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lastSeen: int
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class Link(msgspec.Struct, omit_defaults=True):
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location: str
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creator: str = ""
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expires: int = 0
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config = Config()
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def derived_secret(*params, len=8) -> bytes:
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"""Used to derive secret keys from the main secret"""
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# Each part is made the same length by hashing first
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combined = b"".join(
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sha256(
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p if isinstance(p, bytes) else f"{p}".encode()
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).digest()
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for p in [config.secret, *params]
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)
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# Output a bytes of the desired length
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return sha256(combined).digest()[:len]
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def _pwnorm(password):
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return normalize('NFC', password).strip().encode()
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def login(username: str, password: str):
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un = _pwnorm(username)
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pw = _pwnorm(password)
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try:
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u = config.users[un.decode()]
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except KeyError:
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raise ValueError("Invalid username")
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# Verify password
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if not u.hash:
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raise ValueError("Account disabled")
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if (m := _droppyhash.match(u.hash)) is not None:
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h, s = m.groups()
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h2 = hmac.digest(pw + s.encode() + un, b"", "sha256").hex()
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if not hmac.compare_digest(h, h2):
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raise ValueError("Invalid password")
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# Droppy hashes are weak, do a hash update
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u.set_password(password)
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else:
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try:
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_argon.verify(u.hash, pw)
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except Exception:
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raise ValueError("Invalid password")
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if _argon.check_needs_rehash(u.hash):
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u.set_password(password)
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# Login successful
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now = int(time())
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u.lastSeen = now
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sid = secrets.token_urlsafe(12)
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config.sessions[sid] = Session(username, now)
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return u, sid
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def enc_hook(obj):
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if isinstance(obj, PurePath):
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return obj.as_posix()
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raise TypeError
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def dec_hook(typ, obj):
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if typ is Path:
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return Path(obj)
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raise TypeError
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conffile = Path.cwd() / ".cista.toml"
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def config_update(modify):
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global config
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tmpname = conffile.with_suffix(".tmp")
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try:
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f = tmpname.open("xb")
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except FileExistsError:
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if tmpname.stat().st_mtime < time() - 1:
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tmpname.unlink()
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return "collision"
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try:
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# Load, modify and save with atomic replace
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try:
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old = conffile.read_bytes()
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c = msgspec.toml.decode(old, type=Config, dec_hook=dec_hook)
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except FileNotFoundError:
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old = b""
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c = Config() # Initialize with defaults
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c = modify(c)
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new = msgspec.toml.encode(c, enc_hook=enc_hook)
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if old == new:
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f.close()
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tmpname.unlink()
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config = c
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return "read"
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f.write(new)
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f.close()
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tmpname.rename(conffile) # Atomic replace
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except:
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f.close()
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tmpname.unlink()
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raise
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config = c
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return "modified" if old else "created"
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def modifies_config(modify):
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"""Decorator for functions that modify the config file"""
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@wraps(modify)
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def wrapper(*args, **kwargs):
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m = lambda c: modify(c, *args, **kwargs)
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# Retry modification in case of write collision
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while (c := config_update(m)) == "collision":
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time.sleep(0.01)
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return c
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return wrapper
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@modifies_config
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def droppy_import(config: Config) -> Config:
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p = Path.home() / ".droppy/config"
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cf = msgspec.json.decode((p / "config.json").read_bytes())
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db = msgspec.json.decode((p / "db.json").read_bytes())
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return msgspec.convert(cf | db, Config)
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# Load/initialize config file
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print(conffile, config_update(lambda c: c))
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@ -1,20 +1,28 @@
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import asyncio
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import os
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import unicodedata
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from pathlib import Path
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from pathlib import Path, PurePosixPath
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from pathvalidate import sanitize_filepath
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from . import config
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from .asynclink import AsyncLink
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from .lrucache import LRUCache
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ROOT = Path(os.environ.get("STORAGE", Path.cwd()))
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ROOT = config.config.path
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print("Serving", ROOT)
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def sanitize_filename(filename):
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def fuid(stat) -> str:
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"""Unique file ID. Stays the same on renames and modification."""
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return config.derived_secret("filekey-inode", stat.st_dev, stat.st_ino).hex()
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def sanitize_filename(filename: str) -> str:
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filename = unicodedata.normalize("NFC", filename)
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# UNIX filenames can contain backslashes but for compatibility we replace them with dashes
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filename = filename.replace("\\", "-")
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filename = sanitize_filepath(filename)
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filename = filename.replace("/", "-")
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return filename
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filename = filename.strip("/")
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return PurePosixPath(filename).as_posix()
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class File:
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def __init__(self, filename):
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@ -15,11 +15,9 @@ class FileRange(msgspec.Struct):
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class ErrorMsg(msgspec.Struct):
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error: str
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req: FileRange
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url: str
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class StatusMsg(msgspec.Struct):
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status: str
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url: str
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req: FileRange
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@ -32,7 +30,38 @@ class FileEntry(msgspec.Struct):
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class DirEntry(msgspec.Struct):
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size: int
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mtime: int
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dir: Dict[str, Union[FileEntry, DirEntry]]
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dir: DirList
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def __getitem__(self, name):
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return self.dir[name]
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def __setitem__(self, name, value):
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self.dir[name] = value
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def __contains__(self, name):
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return name in self.dir
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def __delitem__(self, name):
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del self.dir[name]
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@property
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def props(self):
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return {
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k: v
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for k, v in self.__struct_fields__
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if k != "dir"
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}
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DirList = dict[str, Union[FileEntry, DirEntry]]
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class UpdateEntry(msgspec.Struct, omit_defaults=True):
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"""Updates the named entry in the tree. Fields that are set replace old values. A list of entries recurses directories."""
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name: str = ""
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deleted: bool = False
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size: int | None = None
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mtime: int | None = None
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dir: DirList | None = None
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def make_dir_data(root):
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if len(root) == 2:
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@ -1,5 +1,26 @@
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<!DOCTYPE html>
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<title>Storage</title>
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<style>
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body {
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font-family: sans-serif;
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max-width: 100ch;
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margin: 0 auto;
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padding: 1em;
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background-color: #333;
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color: #eee;
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}
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td {
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text-align: right;
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padding: .5em;
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}
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td:first-child {
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text-align: left;
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}
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a {
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color: inherit;
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text-decoration: none;
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}
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</style>
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<div>
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<h2>Quick file upload</h2>
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<p>Uses parallel WebSocket connections for increased bandwidth /api/upload</p>
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@ -8,84 +29,148 @@
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</div>
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<div>
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<h2>File downloads (websocket)</h2>
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<h2>Files</h2>
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<ul id=file_list></ul>
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</div>
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<h2>File listings</h2>
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<p>Plain HTML browser <a href=/files/>/files/</a></p>
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<p>JSON list updated via WebSocket /api/watch:</p>
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<textarea id=list style="padding: 1em; width: 80ch; height: 40ch;"></textarea>
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<script>
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const list = document.getElementById("list")
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let files = {}
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let flatfiles = {}
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function createWatchSocket() {
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const wsurl = new URL("/api/watch", location.href.replace(/^http/, 'ws'))
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const ws = new WebSocket(wsurl)
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ws.onmessage = event => {
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msg = JSON.parse(event.data)
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console.log("Watch", msg)
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if (msg.root) {
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files = msg.root
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if (msg.update) {
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tree_update(msg.update)
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file_list(files)
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} else if (msg.update) {
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const {path, data} = msg.update
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for (const p of path.split("/")) {
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// TODO update files at path with new data
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}
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} else {
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console.log("Unkonwn message from watch socket", msg)
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}
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list.value = JSON.stringify(files)
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}
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}
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function file_list(files) {
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const ul = document.getElementById("file_list")
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ul.innerHTML = ""
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const dir = ""
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let ptr = files.dir
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console.log(ptr)
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for (const name of Object.keys(ptr)) {
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if (ptr[name].dir) continue
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const {size, mtime} = ptr[name]
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const li = document.createElement("li")
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const a = document.createElement("a")
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ul.appendChild(li)
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li.appendChild(a)
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a.textContent = name
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a.href = name
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a.onclick = event => {
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event.preventDefault()
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download(name, size)
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}
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}
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}
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createWatchSocket()
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async function download(name, size) {
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function tree_update(msg) {
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let node = files
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for (const elem of msg) {
|
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if (elem.deleted) {
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delete node.dir[elem.name]
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delete flatfiles[p]
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break
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}
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if (elem.name !== undefined) node = node.dir[elem.name] ||= {}
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if (elem.size !== undefined) node.size = elem.size
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if (elem.mtime !== undefined) node.mtime = elem.mtime
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if (elem.dir !== undefined) node.dir = elem.dir
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}
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// Update paths and flatfiles
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files.path = "/"
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const nodes = [files]
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flatfiles = {}
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while (node = nodes.pop()) {
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flatfiles[node.path] = node
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if (node.dir === undefined) continue
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for (const name of Object.keys(node.dir)) {
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const child = node.dir[name]
|
||||
child.path = node.path + name + (child.dir === undefined ? "" : "/")
|
||||
nodes.push(child)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var collator = new Intl.Collator(undefined, {numeric: true, sensitivity: 'base'});
|
||||
|
||||
const compare_path = (a, b) => collator.compare(a.path, b.path)
|
||||
const compare_time = (a, b) => a.mtime > b.mtime
|
||||
|
||||
function file_list(files) {
|
||||
const table = document.getElementById("file_list")
|
||||
const sorted = Object.values(flatfiles).sort(compare_time)
|
||||
table.innerHTML = ""
|
||||
for (const f of sorted) {
|
||||
const {path, size, mtime} = f
|
||||
const tr = document.createElement("tr")
|
||||
const name_td = document.createElement("td")
|
||||
const size_td = document.createElement("td")
|
||||
const mtime_td = document.createElement("td")
|
||||
const a = document.createElement("a")
|
||||
table.appendChild(tr)
|
||||
tr.appendChild(name_td)
|
||||
tr.appendChild(size_td)
|
||||
tr.appendChild(mtime_td)
|
||||
name_td.appendChild(a)
|
||||
size_td.textContent = size
|
||||
mtime_td.textContent = formatUnixDate(mtime)
|
||||
a.textContent = path
|
||||
a.href = `/files${path}`
|
||||
/*a.onclick = event => {
|
||||
if (window.showSaveFilePicker) {
|
||||
event.preventDefault()
|
||||
download_ws(name, size)
|
||||
}
|
||||
}
|
||||
a.download = ""*/
|
||||
}
|
||||
}
|
||||
|
||||
function formatUnixDate(t) {
|
||||
const date = new Date(t * 1000)
|
||||
const now = new Date()
|
||||
const diff = date - now
|
||||
const formatter = new Intl.RelativeTimeFormat('en', { numeric: 'auto' })
|
||||
|
||||
if (Math.abs(diff) <= 60000) {
|
||||
return formatter.format(Math.round(diff / 1000), 'second')
|
||||
}
|
||||
|
||||
if (Math.abs(diff) <= 3600000) {
|
||||
return formatter.format(Math.round(diff / 60000), 'minute')
|
||||
}
|
||||
|
||||
if (Math.abs(diff) <= 86400000) {
|
||||
return formatter.format(Math.round(diff / 3600000), 'hour')
|
||||
}
|
||||
|
||||
if (Math.abs(diff) <= 604800000) {
|
||||
return formatter.format(Math.round(diff / 86400000), 'day')
|
||||
}
|
||||
|
||||
return date.toLocaleDateString()
|
||||
}
|
||||
|
||||
async function download_ws(name, size) {
|
||||
const fh = await window.showSaveFilePicker({
|
||||
suggestedName: name,
|
||||
})
|
||||
const writer = await fh.createWritable()
|
||||
writer.truncate(size)
|
||||
const wsurl = new URL("/api/download", location.href.replace(/^http/, 'ws'))
|
||||
const ws = new WebSocket(wsurl)
|
||||
ws.binaryType = 'arraybuffer'
|
||||
let pos = 0
|
||||
ws.onopen = () => {
|
||||
console.log("Download socket connected")
|
||||
console.log("Downloading over WebSocket", name, size)
|
||||
ws.send(JSON.stringify({name, start: 0, end: size, size}))
|
||||
}
|
||||
ws.onmessage = event => {
|
||||
const data = event.data
|
||||
console.log("Download", data)
|
||||
const blob = new Blob([data], {type: "application/octet-stream"})
|
||||
const url = URL.createObjectURL(blob)
|
||||
const a = document.createElement("a")
|
||||
a.href = url
|
||||
a.download = name
|
||||
a.click()
|
||||
ws.close()
|
||||
if (typeof event.data === 'string') {
|
||||
const msg = JSON.parse(event.data)
|
||||
console.log("Download finished", msg)
|
||||
ws.close()
|
||||
return
|
||||
}
|
||||
console.log("Received chunk", name, pos, pos + event.data.size)
|
||||
pos += event.data.size
|
||||
writer.write(event.data)
|
||||
}
|
||||
ws.onclose = () => {
|
||||
console.log("Download socket disconnected")
|
||||
if (pos < size) {
|
||||
console.log("Download aborted", name, pos)
|
||||
writer.truncate(pos)
|
||||
}
|
||||
writer.close()
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -95,7 +180,7 @@ const numConnections = 2
|
|||
const chunkSize = 1<<20
|
||||
const wsConnections = new Set()
|
||||
|
||||
for (let i = 0; i < numConnections; i++) createUploadWS()
|
||||
//for (let i = 0; i < numConnections; i++) createUploadWS()
|
||||
|
||||
function createUploadWS() {
|
||||
const wsurl = new URL("/api/upload", location.href.replace(/^http/, 'ws'))
|
||||
|
|
|
|||
|
|
@ -1,19 +1,20 @@
|
|||
import asyncio
|
||||
import secrets
|
||||
from hashlib import sha256
|
||||
from pathlib import Path, PurePosixPath
|
||||
import threading
|
||||
from watchdog.events import FileSystemEventHandler
|
||||
from watchdog.observers import Observer
|
||||
|
||||
import msgspec
|
||||
|
||||
from . import config
|
||||
from .fileio import ROOT
|
||||
from .protocol import DirEntry, FileEntry
|
||||
from .protocol import DirEntry, FileEntry, UpdateEntry
|
||||
|
||||
secret = secrets.token_bytes(8)
|
||||
pubsub = {}
|
||||
|
||||
def fuid(stat):
|
||||
return sha256((stat.st_dev << 32 | stat.st_ino).to_bytes(8, 'big') + secret).hexdigest()[:16]
|
||||
|
||||
def walk(path: Path = ROOT):
|
||||
def walk(path: Path = ROOT) -> DirEntry | FileEntry | None:
|
||||
try:
|
||||
s = path.stat()
|
||||
mtime = int(s.st_mtime)
|
||||
|
|
@ -27,32 +28,99 @@ def walk(path: Path = ROOT):
|
|||
else:
|
||||
size = 0
|
||||
return DirEntry(size, mtime, tree)
|
||||
except FileNotFoundError:
|
||||
return None
|
||||
except OSError as e:
|
||||
print("OS error walking path", path, e)
|
||||
return None
|
||||
|
||||
tree = walk()
|
||||
tree = {"": walk()}
|
||||
tree_lock = threading.Lock()
|
||||
|
||||
def update(relpath: PurePosixPath):
|
||||
ptr = tree.dir
|
||||
path = ROOT
|
||||
name = ""
|
||||
for name in relpath.parts[:-1]:
|
||||
path /= name
|
||||
try:
|
||||
ptr = ptr[name].dir
|
||||
except KeyError:
|
||||
def refresh():
|
||||
root = tree[""]
|
||||
return msgspec.json.encode({"update": [
|
||||
UpdateEntry(size=root.size, mtime=root.mtime, dir=root.dir)
|
||||
]}).decode()
|
||||
|
||||
def update(relpath: PurePosixPath, loop):
|
||||
new = walk(ROOT / relpath)
|
||||
with tree_lock:
|
||||
msg = update_internal(relpath, new)
|
||||
print(msg)
|
||||
asyncio.run_coroutine_threadsafe(broadcast(msg), loop)
|
||||
|
||||
def update_internal(relpath: PurePosixPath, new: DirEntry | FileEntry | None):
|
||||
path = "", *relpath.parts
|
||||
old = tree
|
||||
elems = []
|
||||
for name in path:
|
||||
if name not in old:
|
||||
# File or folder created
|
||||
old = None
|
||||
elems.append((name, None))
|
||||
if len(elems) < len(path):
|
||||
raise ValueError("Tree out of sync")
|
||||
break
|
||||
new = walk(path)
|
||||
old = ptr.pop(name, None)
|
||||
if new is not None:
|
||||
ptr[name] = new
|
||||
old = old[name]
|
||||
elems.append((name, old))
|
||||
if old == new:
|
||||
return
|
||||
print("Update", relpath)
|
||||
# TODO: update parents size/mtime
|
||||
msg = msgspec.json.encode({"update": {
|
||||
"path": relpath.as_posix(),
|
||||
"data": new,
|
||||
}})
|
||||
for queue in pubsub.values(): queue.put_nowait(msg)
|
||||
return # No changes
|
||||
mt = new.mtime if new else 0
|
||||
szdiff = (new.size if new else 0) - (old.size if old else 0)
|
||||
# Update parents
|
||||
update = []
|
||||
for name, entry in elems[:-1]:
|
||||
u = UpdateEntry(name)
|
||||
if szdiff:
|
||||
entry.size += szdiff
|
||||
u.size = entry.size
|
||||
if mt > entry.mtime:
|
||||
u.mtime = entry.mtime = mt
|
||||
update.append(u)
|
||||
# The last element is the one that changed
|
||||
print([e[0] for e in elems])
|
||||
name, entry = elems[-1]
|
||||
parent = elems[-2][1] if len(elems) > 1 else tree
|
||||
u = UpdateEntry(name)
|
||||
if new:
|
||||
parent[name] = new
|
||||
if u.size != new.size: u.size = new.size
|
||||
if u.mtime != new.mtime: u.mtime = new.mtime
|
||||
if isinstance(new, DirEntry):
|
||||
if u.dir == new.dir: u.dir = new.dir
|
||||
else:
|
||||
del parent[name]
|
||||
u.deleted = True
|
||||
update.append(u)
|
||||
return msgspec.json.encode({"update": update}).decode()
|
||||
|
||||
async def broadcast(msg):
|
||||
for queue in pubsub.values():
|
||||
await queue.put_nowait(msg)
|
||||
|
||||
def register(app, url):
|
||||
@app.before_server_start
|
||||
async def start_watcher(app, loop):
|
||||
class Handler(FileSystemEventHandler):
|
||||
def on_any_event(self, event):
|
||||
update(Path(event.src_path).relative_to(ROOT), loop)
|
||||
app.ctx.observer = Observer()
|
||||
app.ctx.observer.schedule(Handler(), str(ROOT), recursive=True)
|
||||
app.ctx.observer.start()
|
||||
|
||||
@app.after_server_stop
|
||||
async def stop_watcher(app, _):
|
||||
app.ctx.observer.stop()
|
||||
app.ctx.observer.join()
|
||||
|
||||
@app.websocket(url)
|
||||
async def watch(request, ws):
|
||||
try:
|
||||
with tree_lock:
|
||||
q = pubsub[ws] = asyncio.Queue()
|
||||
await ws.send(refresh())
|
||||
while True:
|
||||
await ws.send(await q.get())
|
||||
finally:
|
||||
del pubsub[ws]
|
||||
|
|
|
|||
|
|
@ -14,9 +14,11 @@ authors = [
|
|||
classifiers = [
|
||||
]
|
||||
dependencies = [
|
||||
"argon2-cffi",
|
||||
"msgspec",
|
||||
"pathvalidate",
|
||||
"sanic",
|
||||
"tomli_w",
|
||||
"watchdog",
|
||||
]
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user