Mercurial > hg
annotate mercurial/httpconnection.py @ 25812:68822b7cdd01
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author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Wed, 11 Jul 2012 20:48:51 -0400 |
parents | 328739ea70c3 |
children | d343806dcf68 |
rev | line source |
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1 # httpconnection.py - urllib2 handler for new http support |
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2 # |
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3 # Copyright 2005, 2006, 2007, 2008 Matt Mackall <mpm@selenic.com> |
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4 # Copyright 2006, 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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5 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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6 # Copyright 2011 Google, Inc. |
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7 # |
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8 # This software may be used and distributed according to the terms of the |
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9 # GNU General Public License version 2 or any later version. |
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10 import logging |
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11 import socket |
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12 import urllib |
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13 import urllib2 |
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14 import os |
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15 |
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16 from mercurial import httpclient |
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17 from mercurial import sslutil |
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18 from mercurial import util |
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19 from mercurial.i18n import _ |
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20 |
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21 # moved here from url.py to avoid a cycle |
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22 class httpsendfile(object): |
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23 """This is a wrapper around the objects returned by python's "open". |
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24 |
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25 Its purpose is to send file-like objects via HTTP. |
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26 It do however not define a __len__ attribute because the length |
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27 might be more than Py_ssize_t can handle. |
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28 """ |
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29 |
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30 def __init__(self, ui, *args, **kwargs): |
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31 # We can't just "self._data = open(*args, **kwargs)" here because there |
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32 # is an "open" function defined in this module that shadows the global |
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33 # one |
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34 self.ui = ui |
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35 self._data = open(*args, **kwargs) |
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36 self.seek = self._data.seek |
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37 self.close = self._data.close |
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38 self.write = self._data.write |
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39 self.length = os.fstat(self._data.fileno()).st_size |
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40 self._pos = 0 |
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41 self._total = self.length // 1024 * 2 |
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42 |
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43 def read(self, *args, **kwargs): |
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44 try: |
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45 ret = self._data.read(*args, **kwargs) |
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46 except EOFError: |
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47 self.ui.progress(_('sending'), None) |
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48 self._pos += len(ret) |
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49 # We pass double the max for total because we currently have |
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50 # to send the bundle twice in the case of a server that |
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51 # requires authentication. Since we can't know until we try |
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52 # once whether authentication will be required, just lie to |
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53 # the user and maybe the push succeeds suddenly at 50%. |
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54 self.ui.progress(_('sending'), self._pos // 1024, |
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55 unit=_('kb'), total=self._total) |
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56 return ret |
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57 |
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58 # moved here from url.py to avoid a cycle |
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59 def readauthforuri(ui, uri, user): |
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60 # Read configuration |
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61 config = dict() |
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62 for key, val in ui.configitems('auth'): |
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63 if '.' not in key: |
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64 ui.warn(_("ignoring invalid [auth] key '%s'\n") % key) |
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65 continue |
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66 group, setting = key.rsplit('.', 1) |
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67 gdict = config.setdefault(group, dict()) |
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68 if setting in ('username', 'cert', 'key'): |
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69 val = util.expandpath(val) |
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70 gdict[setting] = val |
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71 |
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72 # Find the best match |
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73 scheme, hostpath = uri.split('://', 1) |
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74 bestuser = None |
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75 bestlen = 0 |
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76 bestauth = None |
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77 for group, auth in config.iteritems(): |
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78 if user and user != auth.get('username', user): |
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79 # If a username was set in the URI, the entry username |
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80 # must either match it or be unset |
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81 continue |
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82 prefix = auth.get('prefix') |
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83 if not prefix: |
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84 continue |
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85 p = prefix.split('://', 1) |
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86 if len(p) > 1: |
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87 schemes, prefix = [p[0]], p[1] |
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88 else: |
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89 schemes = (auth.get('schemes') or 'https').split() |
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90 if (prefix == '*' or hostpath.startswith(prefix)) and \ |
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91 (len(prefix) > bestlen or (len(prefix) == bestlen and \ |
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92 not bestuser and 'username' in auth)) \ |
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93 and scheme in schemes: |
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94 bestlen = len(prefix) |
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95 bestauth = group, auth |
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96 bestuser = auth.get('username') |
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97 if user and not bestuser: |
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98 auth['username'] = user |
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99 return bestauth |
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100 |
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101 # Mercurial (at least until we can remove the old codepath) requires |
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102 # that the http response object be sufficiently file-like, so we |
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103 # provide a close() method here. |
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104 class HTTPResponse(httpclient.HTTPResponse): |
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105 def close(self): |
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106 pass |
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107 |
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108 class HTTPConnection(httpclient.HTTPConnection): |
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109 response_class = HTTPResponse |
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110 def request(self, method, uri, body=None, headers={}): |
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111 if isinstance(body, httpsendfile): |
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112 body.seek(0) |
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113 httpclient.HTTPConnection.request(self, method, uri, body=body, |
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114 headers=headers) |
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115 |
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116 |
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117 _configuredlogging = False |
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118 LOGFMT = '%(levelname)s:%(name)s:%(lineno)d:%(message)s' |
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119 # Subclass BOTH of these because otherwise urllib2 "helpfully" |
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120 # reinserts them since it notices we don't include any subclasses of |
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121 # them. |
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122 class http2handler(urllib2.HTTPHandler, urllib2.HTTPSHandler): |
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123 def __init__(self, ui, pwmgr): |
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124 global _configuredlogging |
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125 urllib2.AbstractHTTPHandler.__init__(self) |
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126 self.ui = ui |
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127 self.pwmgr = pwmgr |
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128 self._connections = {} |
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129 loglevel = ui.config('ui', 'http2debuglevel', default=None) |
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130 if loglevel and not _configuredlogging: |
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131 _configuredlogging = True |
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132 logger = logging.getLogger('mercurial.httpclient') |
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133 logger.setLevel(getattr(logging, loglevel.upper())) |
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134 handler = logging.StreamHandler() |
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135 handler.setFormatter(logging.Formatter(LOGFMT)) |
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136 logger.addHandler(handler) |
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137 |
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138 def close_all(self): |
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139 """Close and remove all connection objects being kept for reuse.""" |
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140 for openconns in self._connections.values(): |
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141 for conn in openconns: |
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142 conn.close() |
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143 self._connections = {} |
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144 |
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145 # shamelessly borrowed from urllib2.AbstractHTTPHandler |
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146 def do_open(self, http_class, req, use_ssl): |
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147 """Return an addinfourl object for the request, using http_class. |
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148 |
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149 http_class must implement the HTTPConnection API from httplib. |
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150 The addinfourl return value is a file-like object. It also |
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151 has methods and attributes including: |
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152 - info(): return a mimetools.Message object for the headers |
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153 - geturl(): return the original request URL |
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154 - code: HTTP status code |
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155 """ |
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156 # If using a proxy, the host returned by get_host() is |
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157 # actually the proxy. On Python 2.6.1, the real destination |
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158 # hostname is encoded in the URI in the urllib2 request |
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159 # object. On Python 2.6.5, it's stored in the _tunnel_host |
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160 # attribute which has no accessor. |
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161 tunhost = getattr(req, '_tunnel_host', None) |
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162 host = req.get_host() |
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163 if tunhost: |
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164 proxyhost = host |
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165 host = tunhost |
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166 elif req.has_proxy(): |
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167 proxyhost = req.get_host() |
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168 host = req.get_selector().split('://', 1)[1].split('/', 1)[0] |
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169 else: |
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170 proxyhost = None |
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171 |
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172 if proxyhost: |
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173 if ':' in proxyhost: |
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174 # Note: this means we'll explode if we try and use an |
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175 # IPv6 http proxy. This isn't a regression, so we |
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176 # won't worry about it for now. |
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177 proxyhost, proxyport = proxyhost.rsplit(':', 1) |
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178 else: |
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179 proxyport = 3128 # squid default |
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180 proxy = (proxyhost, proxyport) |
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181 else: |
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182 proxy = None |
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183 |
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184 if not host: |
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185 raise urllib2.URLError('no host given') |
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186 |
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187 connkey = use_ssl, host, proxy |
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188 allconns = self._connections.get(connkey, []) |
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189 conns = [c for c in allconns if not c.busy()] |
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190 if conns: |
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191 h = conns[0] |
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192 else: |
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193 if allconns: |
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194 self.ui.debug('all connections for %s busy, making a new ' |
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195 'one\n' % host) |
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196 timeout = None |
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197 if req.timeout is not socket._GLOBAL_DEFAULT_TIMEOUT: |
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198 timeout = req.timeout |
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199 h = http_class(host, timeout=timeout, proxy_hostport=proxy) |
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200 self._connections.setdefault(connkey, []).append(h) |
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201 |
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202 headers = dict(req.headers) |
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203 headers.update(req.unredirected_hdrs) |
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204 headers = dict( |
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205 (name.title(), val) for name, val in headers.items()) |
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206 try: |
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207 path = req.get_selector() |
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208 if '://' in path: |
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209 path = path.split('://', 1)[1].split('/', 1)[1] |
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210 if path[0] != '/': |
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211 path = '/' + path |
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212 h.request(req.get_method(), path, req.data, headers) |
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213 r = h.getresponse() |
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214 except socket.error as err: # XXX what error? |
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215 raise urllib2.URLError(err) |
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216 |
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217 # Pick apart the HTTPResponse object to get the addinfourl |
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218 # object initialized properly. |
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219 r.recv = r.read |
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220 |
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221 resp = urllib.addinfourl(r, r.headers, req.get_full_url()) |
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222 resp.code = r.status |
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223 resp.msg = r.reason |
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224 return resp |
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225 |
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226 # httplib always uses the given host/port as the socket connect |
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227 # target, and then allows full URIs in the request path, which it |
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228 # then observes and treats as a signal to do proxying instead. |
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229 def http_open(self, req): |
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230 if req.get_full_url().startswith('https'): |
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231 return self.https_open(req) |
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232 def makehttpcon(*args, **kwargs): |
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233 k2 = dict(kwargs) |
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234 k2['use_ssl'] = False |
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235 return HTTPConnection(*args, **k2) |
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236 return self.do_open(makehttpcon, req, False) |
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237 |
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238 def https_open(self, req): |
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239 # req.get_full_url() does not contain credentials and we may |
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240 # need them to match the certificates. |
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241 url = req.get_full_url() |
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242 user, password = self.pwmgr.find_stored_password(url) |
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243 res = readauthforuri(self.ui, url, user) |
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244 if res: |
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245 group, auth = res |
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246 self.auth = auth |
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247 self.ui.debug("using auth.%s.* for authentication\n" % group) |
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248 else: |
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249 self.auth = None |
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250 return self.do_open(self._makesslconnection, req, True) |
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251 |
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252 def _makesslconnection(self, host, port=443, *args, **kwargs): |
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253 keyfile = None |
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254 certfile = None |
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255 |
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256 if args: # key_file |
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257 keyfile = args.pop(0) |
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258 if args: # cert_file |
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259 certfile = args.pop(0) |
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260 |
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261 # if the user has specified different key/cert files in |
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262 # hgrc, we prefer these |
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263 if self.auth and 'key' in self.auth and 'cert' in self.auth: |
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264 keyfile = self.auth['key'] |
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265 certfile = self.auth['cert'] |
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266 |
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267 # let host port take precedence |
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268 if ':' in host and '[' not in host or ']:' in host: |
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269 host, port = host.rsplit(':', 1) |
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270 port = int(port) |
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271 if '[' in host: |
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272 host = host[1:-1] |
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273 |
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274 kwargs['keyfile'] = keyfile |
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275 kwargs['certfile'] = certfile |
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276 |
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277 kwargs.update(sslutil.sslkwargs(self.ui, host)) |
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278 |
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279 con = HTTPConnection(host, port, use_ssl=True, |
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280 ssl_wrap_socket=sslutil.wrapsocket, |
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281 ssl_validator=sslutil.validator(self.ui, host), |
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282 **kwargs) |
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283 return con |