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
144 lines
4.6 KiB
Python
144 lines
4.6 KiB
Python
from __future__ import absolute_import
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import socket
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try:
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from select import poll, POLLIN
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except ImportError: # `poll` doesn't exist on OSX and other platforms
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poll = False
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try:
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from select import select
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except ImportError: # `select` doesn't exist on AppEngine.
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select = False
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def is_connection_dropped(conn): # Platform-specific
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"""
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Returns True if the connection is dropped and should be closed.
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:param conn:
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:class:`httplib.HTTPConnection` object.
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Note: For platforms like AppEngine, this will always return ``False`` to
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let the platform handle connection recycling transparently for us.
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"""
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sock = getattr(conn, 'sock', False)
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if sock is False: # Platform-specific: AppEngine
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return False
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if sock is None: # Connection already closed (such as by httplib).
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return True
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if not poll:
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if not select: # Platform-specific: AppEngine
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return False
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try:
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return select([sock], [], [], 0.0)[0]
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except socket.error:
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return True
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# This version is better on platforms that support it.
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p = poll()
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p.register(sock, POLLIN)
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for (fno, ev) in p.poll(0.0):
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if fno == sock.fileno():
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# Either data is buffered (bad), or the connection is dropped.
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return True
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# This function is copied from socket.py in the Python 2.7 standard
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# library test suite. Added to its signature is only `socket_options`.
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# One additional modification is that we avoid binding to IPv6 servers
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# discovered in DNS if the system doesn't have IPv6 functionality.
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def create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
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source_address=None, socket_options=None):
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"""Connect to *address* and return the socket object.
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Convenience function. Connect to *address* (a 2-tuple ``(host,
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port)``) and return the socket object. Passing the optional
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*timeout* parameter will set the timeout on the socket instance
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before attempting to connect. If no *timeout* is supplied, the
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global default timeout setting returned by :func:`getdefaulttimeout`
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is used. If *source_address* is set it must be a tuple of (host, port)
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for the socket to bind as a source address before making the connection.
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An host of '' or port 0 tells the OS to use the default.
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"""
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host, port = address
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if host.startswith('['):
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host = host.strip('[]')
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err = None
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# Using the value from allowed_gai_family() in the context of getaddrinfo lets
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# us select whether to work with IPv4 DNS records, IPv6 records, or both.
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# The original create_connection function always returns all records.
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family = allowed_gai_family()
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for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
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af, socktype, proto, canonname, sa = res
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sock = None
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try:
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sock = socket.socket(af, socktype, proto)
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# If provided, set socket level options before connecting.
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_set_socket_options(sock, socket_options)
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if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:
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sock.settimeout(timeout)
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if source_address:
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sock.bind(source_address)
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sock.connect(sa)
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return sock
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except socket.error as e:
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err = e
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if sock is not None:
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sock.close()
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sock = None
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if err is not None:
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raise err
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raise socket.error("getaddrinfo returns an empty list")
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def _set_socket_options(sock, options):
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if options is None:
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return
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for opt in options:
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sock.setsockopt(*opt)
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def allowed_gai_family():
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"""This function is designed to work in the context of
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getaddrinfo, where family=socket.AF_UNSPEC is the default and
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will perform a DNS search for both IPv6 and IPv4 records."""
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family = socket.AF_INET
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if HAS_IPV6:
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family = socket.AF_UNSPEC
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return family
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def _has_ipv6(host):
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""" Returns True if the system can bind an IPv6 address. """
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sock = None
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has_ipv6 = False
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if socket.has_ipv6:
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# has_ipv6 returns true if cPython was compiled with IPv6 support.
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# It does not tell us if the system has IPv6 support enabled. To
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# determine that we must bind to an IPv6 address.
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# https://github.com/shazow/urllib3/pull/611
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# https://bugs.python.org/issue658327
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try:
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sock = socket.socket(socket.AF_INET6)
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sock.bind((host, 0))
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has_ipv6 = True
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except Exception:
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pass
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if sock:
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sock.close()
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return has_ipv6
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HAS_IPV6 = _has_ipv6('::1')
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