bbf6d9b026
Bugfix for feeds
- removed categories related and up
- load new books now working
- category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working
468 lines
20 KiB
Python
468 lines
20 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2009 Facebook
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Non-blocking HTTP client implementation using pycurl."""
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from __future__ import absolute_import, division, print_function, with_statement
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import collections
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import functools
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import logging
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import pycurl
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import threading
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import time
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from io import BytesIO
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from tornado import httputil
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from tornado import ioloop
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from tornado import stack_context
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from tornado.escape import utf8, native_str
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from tornado.httpclient import HTTPResponse, HTTPError, AsyncHTTPClient, main
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curl_log = logging.getLogger('tornado.curl_httpclient')
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class CurlAsyncHTTPClient(AsyncHTTPClient):
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def initialize(self, io_loop, max_clients=10, defaults=None):
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super(CurlAsyncHTTPClient, self).initialize(io_loop, defaults=defaults)
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self._multi = pycurl.CurlMulti()
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self._multi.setopt(pycurl.M_TIMERFUNCTION, self._set_timeout)
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self._multi.setopt(pycurl.M_SOCKETFUNCTION, self._handle_socket)
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self._curls = [self._curl_create() for i in range(max_clients)]
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self._free_list = self._curls[:]
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self._requests = collections.deque()
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self._fds = {}
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self._timeout = None
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# libcurl has bugs that sometimes cause it to not report all
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# relevant file descriptors and timeouts to TIMERFUNCTION/
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# SOCKETFUNCTION. Mitigate the effects of such bugs by
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# forcing a periodic scan of all active requests.
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self._force_timeout_callback = ioloop.PeriodicCallback(
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self._handle_force_timeout, 1000, io_loop=io_loop)
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self._force_timeout_callback.start()
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# Work around a bug in libcurl 7.29.0: Some fields in the curl
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# multi object are initialized lazily, and its destructor will
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# segfault if it is destroyed without having been used. Add
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# and remove a dummy handle to make sure everything is
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# initialized.
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dummy_curl_handle = pycurl.Curl()
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self._multi.add_handle(dummy_curl_handle)
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self._multi.remove_handle(dummy_curl_handle)
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def close(self):
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self._force_timeout_callback.stop()
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if self._timeout is not None:
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self.io_loop.remove_timeout(self._timeout)
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for curl in self._curls:
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curl.close()
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self._multi.close()
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super(CurlAsyncHTTPClient, self).close()
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def fetch_impl(self, request, callback):
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self._requests.append((request, callback))
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self._process_queue()
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self._set_timeout(0)
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def _handle_socket(self, event, fd, multi, data):
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"""Called by libcurl when it wants to change the file descriptors
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it cares about.
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"""
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event_map = {
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pycurl.POLL_NONE: ioloop.IOLoop.NONE,
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pycurl.POLL_IN: ioloop.IOLoop.READ,
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pycurl.POLL_OUT: ioloop.IOLoop.WRITE,
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pycurl.POLL_INOUT: ioloop.IOLoop.READ | ioloop.IOLoop.WRITE
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}
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if event == pycurl.POLL_REMOVE:
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if fd in self._fds:
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self.io_loop.remove_handler(fd)
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del self._fds[fd]
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else:
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ioloop_event = event_map[event]
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# libcurl sometimes closes a socket and then opens a new
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# one using the same FD without giving us a POLL_NONE in
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# between. This is a problem with the epoll IOLoop,
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# because the kernel can tell when a socket is closed and
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# removes it from the epoll automatically, causing future
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# update_handler calls to fail. Since we can't tell when
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# this has happened, always use remove and re-add
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# instead of update.
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if fd in self._fds:
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self.io_loop.remove_handler(fd)
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self.io_loop.add_handler(fd, self._handle_events,
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ioloop_event)
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self._fds[fd] = ioloop_event
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def _set_timeout(self, msecs):
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"""Called by libcurl to schedule a timeout."""
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if self._timeout is not None:
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self.io_loop.remove_timeout(self._timeout)
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self._timeout = self.io_loop.add_timeout(
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self.io_loop.time() + msecs / 1000.0, self._handle_timeout)
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def _handle_events(self, fd, events):
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"""Called by IOLoop when there is activity on one of our
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file descriptors.
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"""
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action = 0
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if events & ioloop.IOLoop.READ:
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action |= pycurl.CSELECT_IN
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if events & ioloop.IOLoop.WRITE:
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action |= pycurl.CSELECT_OUT
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while True:
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try:
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ret, num_handles = self._multi.socket_action(fd, action)
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except pycurl.error as e:
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ret = e.args[0]
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if ret != pycurl.E_CALL_MULTI_PERFORM:
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break
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self._finish_pending_requests()
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def _handle_timeout(self):
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"""Called by IOLoop when the requested timeout has passed."""
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with stack_context.NullContext():
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self._timeout = None
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while True:
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try:
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ret, num_handles = self._multi.socket_action(
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pycurl.SOCKET_TIMEOUT, 0)
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except pycurl.error as e:
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ret = e.args[0]
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if ret != pycurl.E_CALL_MULTI_PERFORM:
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break
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self._finish_pending_requests()
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# In theory, we shouldn't have to do this because curl will
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# call _set_timeout whenever the timeout changes. However,
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# sometimes after _handle_timeout we will need to reschedule
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# immediately even though nothing has changed from curl's
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# perspective. This is because when socket_action is
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# called with SOCKET_TIMEOUT, libcurl decides internally which
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# timeouts need to be processed by using a monotonic clock
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# (where available) while tornado uses python's time.time()
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# to decide when timeouts have occurred. When those clocks
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# disagree on elapsed time (as they will whenever there is an
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# NTP adjustment), tornado might call _handle_timeout before
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# libcurl is ready. After each timeout, resync the scheduled
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# timeout with libcurl's current state.
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new_timeout = self._multi.timeout()
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if new_timeout >= 0:
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self._set_timeout(new_timeout)
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def _handle_force_timeout(self):
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"""Called by IOLoop periodically to ask libcurl to process any
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events it may have forgotten about.
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"""
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with stack_context.NullContext():
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while True:
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try:
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ret, num_handles = self._multi.socket_all()
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except pycurl.error as e:
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ret = e.args[0]
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if ret != pycurl.E_CALL_MULTI_PERFORM:
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break
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self._finish_pending_requests()
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def _finish_pending_requests(self):
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"""Process any requests that were completed by the last
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call to multi.socket_action.
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"""
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while True:
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num_q, ok_list, err_list = self._multi.info_read()
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for curl in ok_list:
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self._finish(curl)
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for curl, errnum, errmsg in err_list:
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self._finish(curl, errnum, errmsg)
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if num_q == 0:
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break
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self._process_queue()
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def _process_queue(self):
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with stack_context.NullContext():
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while True:
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started = 0
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while self._free_list and self._requests:
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started += 1
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curl = self._free_list.pop()
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(request, callback) = self._requests.popleft()
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curl.info = {
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"headers": httputil.HTTPHeaders(),
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"buffer": BytesIO(),
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"request": request,
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"callback": callback,
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"curl_start_time": time.time(),
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}
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self._curl_setup_request(curl, request, curl.info["buffer"],
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curl.info["headers"])
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self._multi.add_handle(curl)
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if not started:
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break
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def _finish(self, curl, curl_error=None, curl_message=None):
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info = curl.info
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curl.info = None
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self._multi.remove_handle(curl)
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self._free_list.append(curl)
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buffer = info["buffer"]
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if curl_error:
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error = CurlError(curl_error, curl_message)
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code = error.code
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effective_url = None
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buffer.close()
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buffer = None
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else:
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error = None
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code = curl.getinfo(pycurl.HTTP_CODE)
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effective_url = curl.getinfo(pycurl.EFFECTIVE_URL)
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buffer.seek(0)
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# the various curl timings are documented at
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# http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html
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time_info = dict(
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queue=info["curl_start_time"] - info["request"].start_time,
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namelookup=curl.getinfo(pycurl.NAMELOOKUP_TIME),
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connect=curl.getinfo(pycurl.CONNECT_TIME),
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pretransfer=curl.getinfo(pycurl.PRETRANSFER_TIME),
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starttransfer=curl.getinfo(pycurl.STARTTRANSFER_TIME),
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total=curl.getinfo(pycurl.TOTAL_TIME),
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redirect=curl.getinfo(pycurl.REDIRECT_TIME),
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)
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try:
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info["callback"](HTTPResponse(
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request=info["request"], code=code, headers=info["headers"],
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buffer=buffer, effective_url=effective_url, error=error,
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reason=info['headers'].get("X-Http-Reason", None),
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request_time=time.time() - info["curl_start_time"],
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time_info=time_info))
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except Exception:
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self.handle_callback_exception(info["callback"])
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def handle_callback_exception(self, callback):
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self.io_loop.handle_callback_exception(callback)
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def _curl_create(self):
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curl = pycurl.Curl()
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if curl_log.isEnabledFor(logging.DEBUG):
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curl.setopt(pycurl.VERBOSE, 1)
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curl.setopt(pycurl.DEBUGFUNCTION, self._curl_debug)
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return curl
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def _curl_setup_request(self, curl, request, buffer, headers):
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curl.setopt(pycurl.URL, native_str(request.url))
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# libcurl's magic "Expect: 100-continue" behavior causes delays
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# with servers that don't support it (which include, among others,
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# Google's OpenID endpoint). Additionally, this behavior has
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# a bug in conjunction with the curl_multi_socket_action API
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# (https://sourceforge.net/tracker/?func=detail&atid=100976&aid=3039744&group_id=976),
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# which increases the delays. It's more trouble than it's worth,
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# so just turn off the feature (yes, setting Expect: to an empty
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# value is the official way to disable this)
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if "Expect" not in request.headers:
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request.headers["Expect"] = ""
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# libcurl adds Pragma: no-cache by default; disable that too
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if "Pragma" not in request.headers:
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request.headers["Pragma"] = ""
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curl.setopt(pycurl.HTTPHEADER,
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["%s: %s" % (native_str(k), native_str(v))
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for k, v in request.headers.get_all()])
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curl.setopt(pycurl.HEADERFUNCTION,
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functools.partial(self._curl_header_callback,
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headers, request.header_callback))
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if request.streaming_callback:
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write_function = lambda chunk: self.io_loop.add_callback(
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request.streaming_callback, chunk)
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else:
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write_function = buffer.write
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if bytes is str: # py2
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curl.setopt(pycurl.WRITEFUNCTION, write_function)
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else: # py3
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# Upstream pycurl doesn't support py3, but ubuntu 12.10 includes
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# a fork/port. That version has a bug in which it passes unicode
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# strings instead of bytes to the WRITEFUNCTION. This means that
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# if you use a WRITEFUNCTION (which tornado always does), you cannot
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# download arbitrary binary data. This needs to be fixed in the
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# ported pycurl package, but in the meantime this lambda will
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# make it work for downloading (utf8) text.
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curl.setopt(pycurl.WRITEFUNCTION, lambda s: write_function(utf8(s)))
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curl.setopt(pycurl.FOLLOWLOCATION, request.follow_redirects)
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curl.setopt(pycurl.MAXREDIRS, request.max_redirects)
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curl.setopt(pycurl.CONNECTTIMEOUT_MS, int(1000 * request.connect_timeout))
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curl.setopt(pycurl.TIMEOUT_MS, int(1000 * request.request_timeout))
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if request.user_agent:
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curl.setopt(pycurl.USERAGENT, native_str(request.user_agent))
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else:
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curl.setopt(pycurl.USERAGENT, "Mozilla/5.0 (compatible; pycurl)")
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if request.network_interface:
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curl.setopt(pycurl.INTERFACE, request.network_interface)
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if request.decompress_response:
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curl.setopt(pycurl.ENCODING, "gzip,deflate")
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else:
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curl.setopt(pycurl.ENCODING, "none")
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if request.proxy_host and request.proxy_port:
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curl.setopt(pycurl.PROXY, request.proxy_host)
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curl.setopt(pycurl.PROXYPORT, request.proxy_port)
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if request.proxy_username:
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credentials = '%s:%s' % (request.proxy_username,
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request.proxy_password)
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curl.setopt(pycurl.PROXYUSERPWD, credentials)
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else:
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curl.setopt(pycurl.PROXY, '')
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curl.unsetopt(pycurl.PROXYUSERPWD)
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if request.validate_cert:
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curl.setopt(pycurl.SSL_VERIFYPEER, 1)
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curl.setopt(pycurl.SSL_VERIFYHOST, 2)
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else:
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curl.setopt(pycurl.SSL_VERIFYPEER, 0)
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curl.setopt(pycurl.SSL_VERIFYHOST, 0)
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if request.ca_certs is not None:
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curl.setopt(pycurl.CAINFO, request.ca_certs)
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else:
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# There is no way to restore pycurl.CAINFO to its default value
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# (Using unsetopt makes it reject all certificates).
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# I don't see any way to read the default value from python so it
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# can be restored later. We'll have to just leave CAINFO untouched
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# if no ca_certs file was specified, and require that if any
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# request uses a custom ca_certs file, they all must.
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pass
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if request.allow_ipv6 is False:
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# Curl behaves reasonably when DNS resolution gives an ipv6 address
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# that we can't reach, so allow ipv6 unless the user asks to disable.
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curl.setopt(pycurl.IPRESOLVE, pycurl.IPRESOLVE_V4)
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else:
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curl.setopt(pycurl.IPRESOLVE, pycurl.IPRESOLVE_WHATEVER)
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# Set the request method through curl's irritating interface which makes
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# up names for almost every single method
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curl_options = {
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"GET": pycurl.HTTPGET,
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"POST": pycurl.POST,
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"PUT": pycurl.UPLOAD,
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"HEAD": pycurl.NOBODY,
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}
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custom_methods = set(["DELETE", "OPTIONS", "PATCH"])
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for o in curl_options.values():
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curl.setopt(o, False)
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if request.method in curl_options:
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curl.unsetopt(pycurl.CUSTOMREQUEST)
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curl.setopt(curl_options[request.method], True)
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elif request.allow_nonstandard_methods or request.method in custom_methods:
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curl.setopt(pycurl.CUSTOMREQUEST, request.method)
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else:
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raise KeyError('unknown method ' + request.method)
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# Handle curl's cryptic options for every individual HTTP method
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if request.method == "GET":
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if request.body is not None:
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raise ValueError('Body must be None for GET request')
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elif request.method in ("POST", "PUT") or request.body:
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if request.body is None:
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raise ValueError(
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'Body must not be None for "%s" request'
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% request.method)
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request_buffer = BytesIO(utf8(request.body))
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def ioctl(cmd):
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if cmd == curl.IOCMD_RESTARTREAD:
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request_buffer.seek(0)
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curl.setopt(pycurl.READFUNCTION, request_buffer.read)
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curl.setopt(pycurl.IOCTLFUNCTION, ioctl)
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if request.method == "POST":
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curl.setopt(pycurl.POSTFIELDSIZE, len(request.body))
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else:
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curl.setopt(pycurl.UPLOAD, True)
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curl.setopt(pycurl.INFILESIZE, len(request.body))
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if request.auth_username is not None:
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userpwd = "%s:%s" % (request.auth_username, request.auth_password or '')
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if request.auth_mode is None or request.auth_mode == "basic":
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curl.setopt(pycurl.HTTPAUTH, pycurl.HTTPAUTH_BASIC)
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elif request.auth_mode == "digest":
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curl.setopt(pycurl.HTTPAUTH, pycurl.HTTPAUTH_DIGEST)
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else:
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raise ValueError("Unsupported auth_mode %s" % request.auth_mode)
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curl.setopt(pycurl.USERPWD, native_str(userpwd))
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curl_log.debug("%s %s (username: %r)", request.method, request.url,
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request.auth_username)
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else:
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curl.unsetopt(pycurl.USERPWD)
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curl_log.debug("%s %s", request.method, request.url)
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if request.client_cert is not None:
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curl.setopt(pycurl.SSLCERT, request.client_cert)
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if request.client_key is not None:
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curl.setopt(pycurl.SSLKEY, request.client_key)
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if threading.activeCount() > 1:
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# libcurl/pycurl is not thread-safe by default. When multiple threads
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# are used, signals should be disabled. This has the side effect
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# of disabling DNS timeouts in some environments (when libcurl is
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# not linked against ares), so we don't do it when there is only one
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# thread. Applications that use many short-lived threads may need
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# to set NOSIGNAL manually in a prepare_curl_callback since
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# there may not be any other threads running at the time we call
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# threading.activeCount.
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curl.setopt(pycurl.NOSIGNAL, 1)
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if request.prepare_curl_callback is not None:
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request.prepare_curl_callback(curl)
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def _curl_header_callback(self, headers, header_callback, header_line):
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header_line = native_str(header_line)
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if header_callback is not None:
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self.io_loop.add_callback(header_callback, header_line)
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# header_line as returned by curl includes the end-of-line characters.
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header_line = header_line.strip()
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if header_line.startswith("HTTP/"):
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headers.clear()
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try:
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(__, __, reason) = httputil.parse_response_start_line(header_line)
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header_line = "X-Http-Reason: %s" % reason
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except httputil.HTTPInputError:
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return
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if not header_line:
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return
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headers.parse_line(header_line)
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def _curl_debug(self, debug_type, debug_msg):
|
|
debug_types = ('I', '<', '>', '<', '>')
|
|
if debug_type == 0:
|
|
curl_log.debug('%s', debug_msg.strip())
|
|
elif debug_type in (1, 2):
|
|
for line in debug_msg.splitlines():
|
|
curl_log.debug('%s %s', debug_types[debug_type], line)
|
|
elif debug_type == 4:
|
|
curl_log.debug('%s %r', debug_types[debug_type], debug_msg)
|
|
|
|
|
|
class CurlError(HTTPError):
|
|
def __init__(self, errno, message):
|
|
HTTPError.__init__(self, 599, message)
|
|
self.errno = errno
|
|
|
|
|
|
if __name__ == "__main__":
|
|
AsyncHTTPClient.configure(CurlAsyncHTTPClient)
|
|
main()
|