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
257 lines
10 KiB
Python
257 lines
10 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2011 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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"""A non-blocking, single-threaded TCP server."""
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from __future__ import absolute_import, division, print_function, with_statement
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import errno
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import os
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import socket
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from tornado.log import app_log
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from tornado.ioloop import IOLoop
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from tornado.iostream import IOStream, SSLIOStream
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from tornado.netutil import bind_sockets, add_accept_handler, ssl_wrap_socket
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from tornado import process
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from tornado.util import errno_from_exception
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try:
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import ssl
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except ImportError:
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# ssl is not available on Google App Engine.
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ssl = None
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class TCPServer(object):
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r"""A non-blocking, single-threaded TCP server.
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To use `TCPServer`, define a subclass which overrides the `handle_stream`
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method.
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To make this server serve SSL traffic, send the ssl_options dictionary
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argument with the arguments required for the `ssl.wrap_socket` method,
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including "certfile" and "keyfile"::
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TCPServer(ssl_options={
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"certfile": os.path.join(data_dir, "mydomain.crt"),
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"keyfile": os.path.join(data_dir, "mydomain.key"),
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})
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`TCPServer` initialization follows one of three patterns:
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1. `listen`: simple single-process::
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server = TCPServer()
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server.listen(8888)
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IOLoop.instance().start()
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2. `bind`/`start`: simple multi-process::
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server = TCPServer()
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server.bind(8888)
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server.start(0) # Forks multiple sub-processes
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IOLoop.instance().start()
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When using this interface, an `.IOLoop` must *not* be passed
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to the `TCPServer` constructor. `start` will always start
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the server on the default singleton `.IOLoop`.
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3. `add_sockets`: advanced multi-process::
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sockets = bind_sockets(8888)
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tornado.process.fork_processes(0)
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server = TCPServer()
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server.add_sockets(sockets)
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IOLoop.instance().start()
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The `add_sockets` interface is more complicated, but it can be
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used with `tornado.process.fork_processes` to give you more
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flexibility in when the fork happens. `add_sockets` can
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also be used in single-process servers if you want to create
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your listening sockets in some way other than
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`~tornado.netutil.bind_sockets`.
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.. versionadded:: 3.1
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The ``max_buffer_size`` argument.
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"""
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def __init__(self, io_loop=None, ssl_options=None, max_buffer_size=None,
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read_chunk_size=None):
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self.io_loop = io_loop
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self.ssl_options = ssl_options
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self._sockets = {} # fd -> socket object
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self._pending_sockets = []
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self._started = False
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self.max_buffer_size = max_buffer_size
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self.read_chunk_size = read_chunk_size
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# Verify the SSL options. Otherwise we don't get errors until clients
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# connect. This doesn't verify that the keys are legitimate, but
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# the SSL module doesn't do that until there is a connected socket
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# which seems like too much work
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if self.ssl_options is not None and isinstance(self.ssl_options, dict):
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# Only certfile is required: it can contain both keys
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if 'certfile' not in self.ssl_options:
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raise KeyError('missing key "certfile" in ssl_options')
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if not os.path.exists(self.ssl_options['certfile']):
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raise ValueError('certfile "%s" does not exist' %
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self.ssl_options['certfile'])
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if ('keyfile' in self.ssl_options and
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not os.path.exists(self.ssl_options['keyfile'])):
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raise ValueError('keyfile "%s" does not exist' %
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self.ssl_options['keyfile'])
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def listen(self, port, address=""):
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"""Starts accepting connections on the given port.
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This method may be called more than once to listen on multiple ports.
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`listen` takes effect immediately; it is not necessary to call
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`TCPServer.start` afterwards. It is, however, necessary to start
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the `.IOLoop`.
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"""
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sockets = bind_sockets(port, address=address)
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self.add_sockets(sockets)
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def add_sockets(self, sockets):
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"""Makes this server start accepting connections on the given sockets.
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The ``sockets`` parameter is a list of socket objects such as
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those returned by `~tornado.netutil.bind_sockets`.
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`add_sockets` is typically used in combination with that
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method and `tornado.process.fork_processes` to provide greater
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control over the initialization of a multi-process server.
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"""
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if self.io_loop is None:
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self.io_loop = IOLoop.current()
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for sock in sockets:
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self._sockets[sock.fileno()] = sock
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add_accept_handler(sock, self._handle_connection,
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io_loop=self.io_loop)
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def add_socket(self, socket):
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"""Singular version of `add_sockets`. Takes a single socket object."""
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self.add_sockets([socket])
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def bind(self, port, address=None, family=socket.AF_UNSPEC, backlog=128):
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"""Binds this server to the given port on the given address.
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To start the server, call `start`. If you want to run this server
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in a single process, you can call `listen` as a shortcut to the
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sequence of `bind` and `start` calls.
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Address may be either an IP address or hostname. If it's a hostname,
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the server will listen on all IP addresses associated with the
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name. Address may be an empty string or None to listen on all
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available interfaces. Family may be set to either `socket.AF_INET`
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or `socket.AF_INET6` to restrict to IPv4 or IPv6 addresses, otherwise
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both will be used if available.
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The ``backlog`` argument has the same meaning as for
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`socket.listen <socket.socket.listen>`.
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This method may be called multiple times prior to `start` to listen
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on multiple ports or interfaces.
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"""
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sockets = bind_sockets(port, address=address, family=family,
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backlog=backlog)
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if self._started:
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self.add_sockets(sockets)
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else:
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self._pending_sockets.extend(sockets)
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def start(self, num_processes=1):
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"""Starts this server in the `.IOLoop`.
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By default, we run the server in this process and do not fork any
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additional child process.
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If num_processes is ``None`` or <= 0, we detect the number of cores
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available on this machine and fork that number of child
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processes. If num_processes is given and > 1, we fork that
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specific number of sub-processes.
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Since we use processes and not threads, there is no shared memory
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between any server code.
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Note that multiple processes are not compatible with the autoreload
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module (or the ``autoreload=True`` option to `tornado.web.Application`
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which defaults to True when ``debug=True``).
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When using multiple processes, no IOLoops can be created or
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referenced until after the call to ``TCPServer.start(n)``.
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"""
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assert not self._started
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self._started = True
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if num_processes != 1:
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process.fork_processes(num_processes)
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sockets = self._pending_sockets
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self._pending_sockets = []
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self.add_sockets(sockets)
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def stop(self):
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"""Stops listening for new connections.
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Requests currently in progress may still continue after the
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server is stopped.
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"""
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for fd, sock in self._sockets.items():
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self.io_loop.remove_handler(fd)
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sock.close()
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def handle_stream(self, stream, address):
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"""Override to handle a new `.IOStream` from an incoming connection."""
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raise NotImplementedError()
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def _handle_connection(self, connection, address):
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if self.ssl_options is not None:
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assert ssl, "Python 2.6+ and OpenSSL required for SSL"
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try:
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connection = ssl_wrap_socket(connection,
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self.ssl_options,
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server_side=True,
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do_handshake_on_connect=False)
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except ssl.SSLError as err:
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if err.args[0] == ssl.SSL_ERROR_EOF:
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return connection.close()
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else:
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raise
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except socket.error as err:
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# If the connection is closed immediately after it is created
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# (as in a port scan), we can get one of several errors.
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# wrap_socket makes an internal call to getpeername,
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# which may return either EINVAL (Mac OS X) or ENOTCONN
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# (Linux). If it returns ENOTCONN, this error is
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# silently swallowed by the ssl module, so we need to
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# catch another error later on (AttributeError in
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# SSLIOStream._do_ssl_handshake).
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# To test this behavior, try nmap with the -sT flag.
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# https://github.com/tornadoweb/tornado/pull/750
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if errno_from_exception(err) in (errno.ECONNABORTED, errno.EINVAL):
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return connection.close()
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else:
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raise
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try:
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if self.ssl_options is not None:
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stream = SSLIOStream(connection, io_loop=self.io_loop,
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max_buffer_size=self.max_buffer_size,
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read_chunk_size=self.read_chunk_size)
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else:
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stream = IOStream(connection, io_loop=self.io_loop,
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max_buffer_size=self.max_buffer_size,
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read_chunk_size=self.read_chunk_size)
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self.handle_stream(stream, address)
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except Exception:
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app_log.error("Error in connection callback", exc_info=True)
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