1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2014-2021 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <https://www.gnu.org/licenses/>.
"""Handling of proxies."""
from qutebrowser.config import config, configtypes
from qutebrowser.utils import message, usertypes, urlutils, utils
from qutebrowser.misc import objects
from qutebrowser.browser.network import pac
from qutebrowser.qt import QtNetwork, QtCore
application_factory = None
def init():
"""Set the application wide proxy factory."""
global application_factory
application_factory = ProxyFactory()
QtNetwork.QNetworkProxyFactory.setApplicationProxyFactory(application_factory)
config.instance.changed.connect(_warn_for_pac)
_warn_for_pac()
@config.change_filter('content.proxy', function=True)
def _warn_for_pac():
"""Show a warning if PAC is used with QtWebEngine."""
proxy = config.val.content.proxy
if (isinstance(proxy, pac.PACFetcher) and
objects.backend == usertypes.Backend.QtWebEngine):
message.error("PAC support isn't implemented for QtWebEngine yet!")
@QtCore.pyqtSlot()
def shutdown():
QtNetwork.QNetworkProxyFactory.setApplicationProxyFactory(
None) # type: ignore[arg-type]
class ProxyFactory(QtNetwork.QNetworkProxyFactory):
"""Factory for proxies to be used by qutebrowser."""
def get_error(self):
"""Check if proxy can't be resolved.
Return:
None if proxy is correct, otherwise an error message.
"""
proxy = config.val.content.proxy
if isinstance(proxy, pac.PACFetcher):
return proxy.fetch_error()
else:
return None
def _set_capabilities(self, proxy):
if proxy.type() == QtNetwork.QNetworkProxy.NoProxy:
return
capabilities = proxy.capabilities()
lookup_cap = QtNetwork.QNetworkProxy.HostNameLookupCapability
if config.val.content.proxy_dns_requests:
capabilities |= lookup_cap
else:
capabilities &= ~lookup_cap
proxy.setCapabilities(capabilities)
def queryProxy(self, query):
"""Get the QNetworkProxies for a query.
Args:
query: The QNetworkProxyQuery to get a proxy for.
Return:
A list of QNetworkProxy objects in order of preference.
"""
proxy = config.val.content.proxy
if proxy is configtypes.SYSTEM_PROXY:
# On Linux, use "export http_proxy=socks5://host:port" to manually
# set system proxy.
# ref. https://doc.qt.io/qt-5/qnetworkproxyfactory.html#systemProxyForQuery
proxies = QtNetwork.QNetworkProxyFactory.systemProxyForQuery(query)
elif isinstance(proxy, pac.PACFetcher):
if objects.backend == usertypes.Backend.QtWebEngine:
# Looks like query.url() is always invalid on QtWebEngine...
proxy = urlutils.proxy_from_url(QtCore.QUrl('direct://'))
assert not isinstance(proxy, pac.PACFetcher)
proxies = [proxy]
elif objects.backend == usertypes.Backend.QtWebKit:
proxies = proxy.resolve(query)
else:
raise utils.Unreachable(objects.backend)
else:
proxies = [proxy]
for proxy in proxies:
self._set_capabilities(proxy)
return proxies
|
