Mercurial Repositories > eric / file comparison
comparison: E5Network/E5NetworkProxyFactory.py
E5Network/E5NetworkProxyFactory.py
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2010 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a network proxy factory. | |
| 8 """ | |
| 9 | |
| 10 import sys | |
| 11 import os | |
| 12 | |
| 13 from PyQt4.QtCore import QUrl | |
| 14 from PyQt4.QtGui import QMessageBox | |
| 15 from PyQt4.QtNetwork import QNetworkProxyFactory, QNetworkProxy, QNetworkProxyQuery | |
| 16 | |
| 17 import Preferences | |
| 18 | |
| 19 class E5NetworkProxyFactory(QNetworkProxyFactory): | |
| 20 """ | |
| 21 Class implementing a network proxy factory. | |
| 22 """ | |
| 23 def __init__(self): | |
| 24 """ | |
| 25 Constructor | |
| 26 """ | |
| 27 QNetworkProxyFactory.__init__(self) | |
| 28 | |
| 29 def queryProxy(self, query): | |
| 30 """ | |
| 31 Public method to determine a proxy for a given query. | |
| 32 | |
| 33 @param query reference to the query object (QNetworkProxyQuery) | |
| 34 @return list of proxies in order of preference (list of QNetworkProxy) | |
| 35 """ | |
| 36 if query.queryType() == QNetworkProxyQuery.UrlRequest and \ | |
| 37 query.protocolTag() in ["http", "https", "ftp"] and \ | |
| 38 Preferences.getUI("UseProxy"): | |
| 39 if Preferences.getUI("UseSystemProxy"): | |
| 40 proxyList = QNetworkProxyFactory.systemProxyForQuery(query) | |
| 41 if sys.platform not in ["darwin", "nt"] and \ | |
| 42 len(proxyList) == 1 and \ | |
| 43 proxyList[0].type() == QNetworkProxy.NoProxy: | |
| 44 # try it the Python way | |
| 45 # scan the environment for variables named <scheme>_proxy | |
| 46 # scan over whole environment to make this case insensitive | |
| 47 for name, value in os.environ.items(): | |
| 48 name = name.lower() | |
| 49 if value and name[-6:] == '_proxy' and \ | |
| 50 name[:-6] == query.protocolTag().lower(): | |
| 51 url = QUrl(value) | |
| 52 if url.scheme() in ["http", "https"]: | |
| 53 proxyType = QNetworkProxy.HttpProxy | |
| 54 else: | |
| 55 proxyType = QNetworkProxy.FtpCachingProxy | |
| 56 proxy = QNetworkProxy(proxyType, url.host(), url.port(), | |
| 57 url.userName(), url.password()) | |
| 58 proxyList = [proxy] | |
| 59 break | |
| 60 return proxyList | |
| 61 else: | |
| 62 host = Preferences.getUI("ProxyHost") | |
| 63 if not host: | |
| 64 QMessageBox.critical(None, | |
| 65 self.trUtf8("Proxy Configuration Error"), | |
| 66 self.trUtf8("""Proxy usage was activated""" | |
| 67 """ but no proxy host configured.""")) | |
| 68 return [QNetworkProxy(QNetworkProxy.DefaultProxy)] | |
| 69 else: | |
| 70 pProxyType = Preferences.getUI("ProxyType") | |
| 71 if pProxyType == 0: | |
| 72 proxyType = QNetworkProxy.HttpProxy | |
| 73 elif pProxyType == 1: | |
| 74 proxyType = QNetworkProxy.HttpCachingProxy | |
| 75 elif pProxyType == 2: | |
| 76 proxyType = QNetworkProxy.Socks5Proxy | |
| 77 proxy = QNetworkProxy(proxyType, host, | |
| 78 Preferences.getUI("ProxyPort"), | |
| 79 Preferences.getUI("ProxyUser"), | |
| 80 Preferences.getUI("ProxyPassword")) | |
| 81 return [proxy, QNetworkProxy(QNetworkProxy.DefaultProxy)] | |
| 82 else: | |
| 83 return [QNetworkProxy(QNetworkProxy.NoProxy)] |
