405 lines
15 KiB
Python
405 lines
15 KiB
Python
import logging
|
|
import os
|
|
import shutil
|
|
import json
|
|
import sys
|
|
import mimetypes
|
|
import mimetools
|
|
import tempfile
|
|
import time
|
|
import cgi
|
|
|
|
from appdirs import user_data_dir
|
|
from twisted.web import server, static, resource
|
|
from twisted.internet import abstract, defer, interfaces, error, reactor, task, threads
|
|
|
|
from zope.interface import implementer
|
|
|
|
from lbrynet.lbrynet_daemon.Daemon import Daemon
|
|
from lbrynet.conf import API_ADDRESS, UI_ADDRESS, DEFAULT_UI_BRANCH, LOG_FILE_NAME
|
|
|
|
|
|
# TODO: omg, this code is essentially duplicated in Daemon
|
|
if sys.platform != "darwin":
|
|
data_dir = os.path.join(os.path.expanduser("~"), ".lbrynet")
|
|
else:
|
|
data_dir = user_data_dir("LBRY")
|
|
if not os.path.isdir(data_dir):
|
|
os.mkdir(data_dir)
|
|
|
|
lbrynet_log = os.path.join(data_dir, LOG_FILE_NAME)
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class DaemonRequest(server.Request):
|
|
"""
|
|
For LBRY specific request functionality. Currently just provides
|
|
handling for large multipart POST requests, taken from here:
|
|
http://sammitch.ca/2013/07/handling-large-requests-in-twisted/
|
|
|
|
For multipart POST requests, this populates self.args with temp
|
|
file objects instead of strings. Note that these files don't auto-delete
|
|
on close because we want to be able to move and rename them.
|
|
|
|
"""
|
|
|
|
# max amount of memory to allow any ~single~ request argument [ie: POSTed file]
|
|
# note: this value seems to be taken with a grain of salt, memory usage may spike
|
|
# FAR above this value in some cases.
|
|
# eg: set the memory limit to 5 MB, write 2 blocks of 4MB, mem usage will
|
|
# have spiked to 8MB before the data is rolled to disk after the
|
|
# second write completes.
|
|
memorylimit = 1024*1024*100
|
|
|
|
# enable/disable debug logging
|
|
do_log = False
|
|
|
|
# re-defined only for debug/logging purposes
|
|
def gotLength(self, length):
|
|
if self.do_log:
|
|
print '%f Headers received, Content-Length: %d' % (time.time(), length)
|
|
server.Request.gotLength(self, length)
|
|
|
|
# re-definition of twisted.web.server.Request.requestreceived, the only difference
|
|
# is that self.parse_multipart() is used rather than cgi.parse_multipart()
|
|
def requestReceived(self, command, path, version):
|
|
from twisted.web.http import parse_qs
|
|
if self.do_log:
|
|
print '%f Request Received' % time.time()
|
|
|
|
self.content.seek(0,0)
|
|
self.args = {}
|
|
self.stack = []
|
|
|
|
self.method, self.uri = command, path
|
|
self.clientproto = version
|
|
x = self.uri.split(b'?', 1)
|
|
|
|
if len(x) == 1:
|
|
self.path = self.uri
|
|
else:
|
|
self.path, argstring = x
|
|
self.args = parse_qs(argstring, 1)
|
|
|
|
# cache the client and server information, we'll need this later to be
|
|
# serialized and sent with the request so CGIs will work remotely
|
|
self.client = self.channel.transport.getPeer()
|
|
self.host = self.channel.transport.getHost()
|
|
|
|
# Argument processing
|
|
args = self.args
|
|
ctype = self.requestHeaders.getRawHeaders(b'content-type')
|
|
if ctype is not None:
|
|
ctype = ctype[0]
|
|
|
|
if self.method == b"POST" and ctype:
|
|
mfd = b'multipart/form-data'
|
|
key, pdict = cgi.parse_header(ctype)
|
|
if key == b'application/x-www-form-urlencoded':
|
|
args.update(parse_qs(self.content.read(), 1))
|
|
elif key == mfd:
|
|
try:
|
|
self.content.seek(0,0)
|
|
args.update(self.parse_multipart(self.content, pdict))
|
|
#args.update(cgi.parse_multipart(self.content, pdict))
|
|
|
|
except KeyError as e:
|
|
if e.args[0] == b'content-disposition':
|
|
# Parse_multipart can't cope with missing
|
|
# content-dispostion headers in multipart/form-data
|
|
# parts, so we catch the exception and tell the client
|
|
# it was a bad request.
|
|
self.channel.transport.write(
|
|
b"HTTP/1.1 400 Bad Request\r\n\r\n")
|
|
self.channel.transport.loseConnection()
|
|
return
|
|
raise
|
|
|
|
self.content.seek(0, 0)
|
|
|
|
self.process()
|
|
|
|
# re-definition of cgi.parse_multipart that uses a single temporary file to store
|
|
# data rather than storing 2 to 3 copies in various lists.
|
|
def parse_multipart(self, fp, pdict):
|
|
if self.do_log:
|
|
print '%f Parsing Multipart data: ' % time.time()
|
|
rewind = fp.tell() #save cursor
|
|
fp.seek(0,0) #reset cursor
|
|
|
|
boundary = ""
|
|
if 'boundary' in pdict:
|
|
boundary = pdict['boundary']
|
|
if not cgi.valid_boundary(boundary):
|
|
raise ValueError, ('Invalid boundary in multipart form: %r'
|
|
% (boundary,))
|
|
|
|
nextpart = "--" + boundary
|
|
lastpart = "--" + boundary + "--"
|
|
partdict = {}
|
|
terminator = ""
|
|
|
|
while terminator != lastpart:
|
|
c_bytes = -1
|
|
|
|
data = tempfile.NamedTemporaryFile(delete=False)
|
|
if terminator:
|
|
# At start of next part. Read headers first.
|
|
headers = mimetools.Message(fp)
|
|
clength = headers.getheader('content-length')
|
|
if clength:
|
|
try:
|
|
c_bytes = int(clength)
|
|
except ValueError:
|
|
pass
|
|
if c_bytes > 0:
|
|
data.write(fp.read(c_bytes))
|
|
# Read lines until end of part.
|
|
while 1:
|
|
line = fp.readline()
|
|
if not line:
|
|
terminator = lastpart # End outer loop
|
|
break
|
|
if line[:2] == "--":
|
|
terminator = line.strip()
|
|
if terminator in (nextpart, lastpart):
|
|
break
|
|
data.write(line)
|
|
# Done with part.
|
|
if data.tell() == 0:
|
|
continue
|
|
if c_bytes < 0:
|
|
# if a Content-Length header was not supplied with the MIME part
|
|
# then the trailing line break must be removed.
|
|
# we have data, read the last 2 bytes
|
|
rewind = min(2, data.tell())
|
|
data.seek(-rewind, os.SEEK_END)
|
|
line = data.read(2)
|
|
if line[-2:] == "\r\n":
|
|
data.seek(-2, os.SEEK_END)
|
|
data.truncate()
|
|
elif line[-1:] == "\n":
|
|
data.seek(-1, os.SEEK_END)
|
|
data.truncate()
|
|
|
|
line = headers['content-disposition']
|
|
if not line:
|
|
continue
|
|
key, params = cgi.parse_header(line)
|
|
if key != 'form-data':
|
|
continue
|
|
if 'name' in params:
|
|
name = params['name']
|
|
# kludge in the filename
|
|
if 'filename' in params:
|
|
fname_index = name + '_filename'
|
|
if fname_index in partdict:
|
|
partdict[fname_index].append(params['filename'])
|
|
else:
|
|
partdict[fname_index] = [params['filename']]
|
|
else:
|
|
# Unnamed parts are not returned at all.
|
|
continue
|
|
data.seek(0,0)
|
|
if name in partdict:
|
|
partdict[name].append(data)
|
|
else:
|
|
partdict[name] = [data]
|
|
|
|
fp.seek(rewind) # Restore cursor
|
|
return partdict
|
|
|
|
class LBRYindex(resource.Resource):
|
|
def __init__(self, ui_dir):
|
|
resource.Resource.__init__(self)
|
|
self.ui_dir = ui_dir
|
|
|
|
isLeaf = False
|
|
|
|
def _delayed_render(self, request, results):
|
|
request.write(str(results))
|
|
request.finish()
|
|
|
|
def getChild(self, name, request):
|
|
if name == '':
|
|
return self
|
|
return resource.Resource.getChild(self, name, request)
|
|
|
|
def render_GET(self, request):
|
|
request.setHeader('cache-control','no-cache, no-store, must-revalidate')
|
|
request.setHeader('expires', '0')
|
|
return static.File(os.path.join(self.ui_dir, "index.html")).render_GET(request)
|
|
|
|
|
|
@implementer(interfaces.IPushProducer)
|
|
class EncryptedFileStreamer(object):
|
|
"""
|
|
Writes LBRY stream to request; will pause to wait for new data if the file
|
|
is downloading.
|
|
|
|
No support for range requests (some browser players can't handle it when
|
|
the full video data isn't available on request).
|
|
"""
|
|
|
|
bufferSize = abstract.FileDescriptor.bufferSize
|
|
|
|
|
|
# How long to wait between sending blocks (needed because some
|
|
# video players freeze up if you try to send data too fast)
|
|
stream_interval = 0.01
|
|
|
|
# How long to wait before checking if new data has been appended to the file
|
|
new_data_check_interval = 0.25
|
|
|
|
|
|
def __init__(self, request, path, stream, file_manager):
|
|
def _set_content_length_header(length):
|
|
self._request.setHeader('content-length', length)
|
|
return defer.succeed(None)
|
|
|
|
self._request = request
|
|
self._file = open(path, 'rb')
|
|
self._stream = stream
|
|
self._file_manager = file_manager
|
|
self._headers_sent = False
|
|
|
|
self._running = True
|
|
|
|
self._request.setResponseCode(200)
|
|
self._request.setHeader('accept-ranges', 'none')
|
|
self._request.setHeader('content-type', mimetypes.guess_type(path)[0])
|
|
self._request.setHeader("Content-Security-Policy", "sandbox")
|
|
|
|
self._deferred = stream.get_total_bytes()
|
|
self._deferred.addCallback(_set_content_length_header)
|
|
self._deferred.addCallback(lambda _: self.resumeProducing())
|
|
|
|
def _check_for_new_data(self):
|
|
def _recurse_or_stop(stream_status):
|
|
if not self._running:
|
|
return
|
|
|
|
if stream_status != ManagedLBRYFileDownloader.STATUS_FINISHED:
|
|
self._deferred.addCallback(lambda _: task.deferLater(reactor, self.new_data_check_interval, self._check_for_new_data))
|
|
else:
|
|
self.stopProducing()
|
|
|
|
if not self._running:
|
|
return
|
|
|
|
# Clear the file's EOF indicator by seeking to current position
|
|
self._file.seek(self._file.tell())
|
|
|
|
data = self._file.read(self.bufferSize)
|
|
if data:
|
|
self._request.write(data)
|
|
if self._running: # .write() can trigger a pause
|
|
self._deferred.addCallback(lambda _: task.deferLater(reactor, self.stream_interval, self._check_for_new_data))
|
|
else:
|
|
self._deferred.addCallback(lambda _: self._file_manager.get_lbry_file_status(self._stream))
|
|
self._deferred.addCallback(_recurse_or_stop)
|
|
|
|
def pauseProducing(self):
|
|
self._running = False
|
|
|
|
def resumeProducing(self):
|
|
self._running = True
|
|
self._check_for_new_data()
|
|
|
|
def stopProducing(self):
|
|
self._running = False
|
|
self._file.close()
|
|
self._deferred.addErrback(lambda err: err.trap(defer.CancelledError))
|
|
self._deferred.addErrback(lambda err: err.trap(error.ConnectionDone))
|
|
self._deferred.cancel()
|
|
self._request.unregisterProducer()
|
|
self._request.finish()
|
|
|
|
|
|
class HostedEncryptedFile(resource.Resource):
|
|
def __init__(self, api):
|
|
self._api = api
|
|
resource.Resource.__init__(self)
|
|
|
|
def _make_stream_producer(self, request, stream):
|
|
path = os.path.join(self._api.download_directory, stream.file_name)
|
|
|
|
producer = EncryptedFileStreamer(request, path, stream, self._api.lbry_file_manager)
|
|
request.registerProducer(producer, streaming=True)
|
|
|
|
d = request.notifyFinish()
|
|
d.addErrback(self._responseFailed, d)
|
|
return d
|
|
|
|
def render_GET(self, request):
|
|
request.setHeader("Content-Security-Policy", "sandbox")
|
|
if 'name' in request.args.keys():
|
|
if request.args['name'][0] != 'lbry' and request.args['name'][0] not in self._api.waiting_on.keys():
|
|
d = self._api._download_name(request.args['name'][0])
|
|
d.addCallback(lambda stream: self._make_stream_producer(request, stream))
|
|
elif request.args['name'][0] in self._api.waiting_on.keys():
|
|
request.redirect(UI_ADDRESS + "/?watch=" + request.args['name'][0])
|
|
request.finish()
|
|
else:
|
|
request.redirect(UI_ADDRESS)
|
|
request.finish()
|
|
return server.NOT_DONE_YET
|
|
|
|
def _responseFailed(self, err, call):
|
|
call.addErrback(lambda err: err.trap(error.ConnectionDone))
|
|
call.addErrback(lambda err: err.trap(defer.CancelledError))
|
|
call.addErrback(lambda err: log.info("Error: " + str(err)))
|
|
call.cancel()
|
|
|
|
class EncryptedFileUpload(resource.Resource):
|
|
"""
|
|
Accepts a file sent via the file upload widget in the web UI, saves
|
|
it into a temporary dir, and responds with a JSON string containing
|
|
the path of the newly created file.
|
|
"""
|
|
|
|
def __init__(self, api):
|
|
self._api = api
|
|
|
|
def render_POST(self, request):
|
|
origfilename = request.args['file_filename'][0]
|
|
uploaded_file = request.args['file'][0] # Temp file created by request
|
|
|
|
# Move to a new temporary dir and restore the original file name
|
|
newdirpath = tempfile.mkdtemp()
|
|
newpath = os.path.join(newdirpath, origfilename)
|
|
if os.name == "nt":
|
|
shutil.copy(uploaded_file.name, newpath)
|
|
# TODO Still need to remove the file
|
|
|
|
# TODO deal with pylint error in cleaner fashion than this
|
|
try:
|
|
from exceptions import WindowsError as win_except
|
|
except ImportError as e:
|
|
log.error("This shouldn't happen")
|
|
win_except = Exception
|
|
|
|
try:
|
|
os.remove(uploaded_file.name)
|
|
except win_except as e:
|
|
pass
|
|
else:
|
|
shutil.move(uploaded_file.name, newpath)
|
|
self._api.uploaded_temp_files.append(newpath)
|
|
|
|
return json.dumps(newpath)
|
|
|
|
|
|
class DaemonServer(object):
|
|
def _setup_server(self, wallet):
|
|
self.root = LBRYindex(os.path.join(os.path.join(data_dir, "lbry-ui"), "active"))
|
|
self._api = Daemon(self.root, wallet_type=wallet)
|
|
self.root.putChild("view", HostedEncryptedFile(self._api))
|
|
self.root.putChild("upload", EncryptedFileUpload(self._api))
|
|
self.root.putChild(API_ADDRESS, self._api)
|
|
return defer.succeed(True)
|
|
|
|
def start(self, branch=DEFAULT_UI_BRANCH, user_specified=False, branch_specified=False, wallet=None):
|
|
d = self._setup_server(wallet)
|
|
d.addCallback(lambda _: self._api.setup(branch, user_specified, branch_specified))
|
|
return d
|