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28
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1 # url.py - HTTP handling for mercurial
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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 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2, incorporated herein by reference.
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9
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10 import urllib, urllib2, urlparse, httplib, os, re, socket, cStringIO
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11 from i18n import _
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12 import keepalive, util
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13
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14 def hidepassword(url):
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15 '''hide user credential in a url string'''
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16 scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
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17 netloc = re.sub('([^:]*):([^@]*)@(.*)', r'\1:***@\3', netloc)
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18 return urlparse.urlunparse((scheme, netloc, path, params, query, fragment))
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19
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20 def removeauth(url):
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21 '''remove all authentication information from a url string'''
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22 scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
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23 netloc = netloc[netloc.find('@')+1:]
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24 return urlparse.urlunparse((scheme, netloc, path, params, query, fragment))
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25
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26 def netlocsplit(netloc):
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27 '''split [user[:passwd]@]host[:port] into 4-tuple.'''
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28
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29 a = netloc.find('@')
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30 if a == -1:
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31 user, passwd = None, None
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32 else:
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33 userpass, netloc = netloc[:a], netloc[a+1:]
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34 c = userpass.find(':')
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35 if c == -1:
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36 user, passwd = urllib.unquote(userpass), None
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37 else:
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38 user = urllib.unquote(userpass[:c])
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39 passwd = urllib.unquote(userpass[c+1:])
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40 c = netloc.find(':')
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41 if c == -1:
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42 host, port = netloc, None
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43 else:
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44 host, port = netloc[:c], netloc[c+1:]
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45 return host, port, user, passwd
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46
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47 def netlocunsplit(host, port, user=None, passwd=None):
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48 '''turn host, port, user, passwd into [user[:passwd]@]host[:port].'''
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49 if port:
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50 hostport = host + ':' + port
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51 else:
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52 hostport = host
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53 if user:
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54 if passwd:
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55 userpass = urllib.quote(user) + ':' + urllib.quote(passwd)
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56 else:
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57 userpass = urllib.quote(user)
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58 return userpass + '@' + hostport
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59 return hostport
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60
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61 _safe = ('abcdefghijklmnopqrstuvwxyz'
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62 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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63 '0123456789' '_.-/')
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64 _safeset = None
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65 _hex = None
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66 def quotepath(path):
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67 '''quote the path part of a URL
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68
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69 This is similar to urllib.quote, but it also tries to avoid
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70 quoting things twice (inspired by wget):
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71
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72 >>> quotepath('abc def')
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73 'abc%20def'
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74 >>> quotepath('abc%20def')
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75 'abc%20def'
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76 >>> quotepath('abc%20 def')
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77 'abc%20%20def'
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78 >>> quotepath('abc def%20')
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79 'abc%20def%20'
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80 >>> quotepath('abc def%2')
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81 'abc%20def%252'
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82 >>> quotepath('abc def%')
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83 'abc%20def%25'
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84 '''
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85 global _safeset, _hex
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86 if _safeset is None:
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87 _safeset = set(_safe)
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88 _hex = set('abcdefABCDEF0123456789')
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89 l = list(path)
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90 for i in xrange(len(l)):
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91 c = l[i]
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92 if c == '%' and i + 2 < len(l) and (l[i+1] in _hex and l[i+2] in _hex):
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93 pass
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94 elif c not in _safeset:
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95 l[i] = '%%%02X' % ord(c)
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96 return ''.join(l)
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97
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98 class passwordmgr(urllib2.HTTPPasswordMgrWithDefaultRealm):
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99 def __init__(self, ui):
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100 urllib2.HTTPPasswordMgrWithDefaultRealm.__init__(self)
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101 self.ui = ui
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102
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103 def find_user_password(self, realm, authuri):
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104 authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm.find_user_password(
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105 self, realm, authuri)
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106 user, passwd = authinfo
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107 if user and passwd:
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108 self._writedebug(user, passwd)
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109 return (user, passwd)
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110
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111 if not user:
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112 auth = self.readauthtoken(authuri)
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113 if auth:
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114 user, passwd = auth.get('username'), auth.get('password')
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115 if not user or not passwd:
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116 if not self.ui.interactive():
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117 raise util.Abort(_('http authorization required'))
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118
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119 self.ui.write(_("http authorization required\n"))
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120 self.ui.status(_("realm: %s\n") % realm)
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121 if user:
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122 self.ui.status(_("user: %s\n") % user)
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123 else:
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124 user = self.ui.prompt(_("user:"), default=None)
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125
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126 if not passwd:
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127 passwd = self.ui.getpass()
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128
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129 self.add_password(realm, authuri, user, passwd)
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130 self._writedebug(user, passwd)
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131 return (user, passwd)
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132
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133 def _writedebug(self, user, passwd):
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134 msg = _('http auth: user %s, password %s\n')
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135 self.ui.debug(msg % (user, passwd and '*' * len(passwd) or 'not set'))
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136
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137 def readauthtoken(self, uri):
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138 # Read configuration
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139 config = dict()
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140 for key, val in self.ui.configitems('auth'):
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141 group, setting = key.split('.', 1)
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142 gdict = config.setdefault(group, dict())
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143 gdict[setting] = val
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144
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145 # Find the best match
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146 scheme, hostpath = uri.split('://', 1)
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147 bestlen = 0
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148 bestauth = None
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149 for auth in config.itervalues():
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150 prefix = auth.get('prefix')
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151 if not prefix: continue
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152 p = prefix.split('://', 1)
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153 if len(p) > 1:
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154 schemes, prefix = [p[0]], p[1]
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155 else:
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156 schemes = (auth.get('schemes') or 'https').split()
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157 if (prefix == '*' or hostpath.startswith(prefix)) and \
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158 len(prefix) > bestlen and scheme in schemes:
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159 bestlen = len(prefix)
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160 bestauth = auth
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161 return bestauth
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162
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163 class proxyhandler(urllib2.ProxyHandler):
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164 def __init__(self, ui):
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165 proxyurl = ui.config("http_proxy", "host") or os.getenv('http_proxy')
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166 # XXX proxyauthinfo = None
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167
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168 if proxyurl:
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169 # proxy can be proper url or host[:port]
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170 if not (proxyurl.startswith('http:') or
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171 proxyurl.startswith('https:')):
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172 proxyurl = 'http://' + proxyurl + '/'
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173 snpqf = urlparse.urlsplit(proxyurl)
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174 proxyscheme, proxynetloc, proxypath, proxyquery, proxyfrag = snpqf
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175 hpup = netlocsplit(proxynetloc)
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176
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177 proxyhost, proxyport, proxyuser, proxypasswd = hpup
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178 if not proxyuser:
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179 proxyuser = ui.config("http_proxy", "user")
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180 proxypasswd = ui.config("http_proxy", "passwd")
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181
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182 # see if we should use a proxy for this url
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183 no_list = [ "localhost", "127.0.0.1" ]
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184 no_list.extend([p.lower() for
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185 p in ui.configlist("http_proxy", "no")])
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186 no_list.extend([p.strip().lower() for
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187 p in os.getenv("no_proxy", '').split(',')
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188 if p.strip()])
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189 # "http_proxy.always" config is for running tests on localhost
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190 if ui.configbool("http_proxy", "always"):
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191 self.no_list = []
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192 else:
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193 self.no_list = no_list
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194
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195 proxyurl = urlparse.urlunsplit((
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196 proxyscheme, netlocunsplit(proxyhost, proxyport,
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197 proxyuser, proxypasswd or ''),
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198 proxypath, proxyquery, proxyfrag))
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199 proxies = {'http': proxyurl, 'https': proxyurl}
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200 ui.debug(_('proxying through http://%s:%s\n') %
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201 (proxyhost, proxyport))
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202 else:
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203 proxies = {}
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204
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205 # urllib2 takes proxy values from the environment and those
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206 # will take precedence if found, so drop them
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207 for env in ["HTTP_PROXY", "http_proxy", "no_proxy"]:
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208 try:
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209 if env in os.environ:
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210 del os.environ[env]
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211 except OSError:
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212 pass
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213
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214 urllib2.ProxyHandler.__init__(self, proxies)
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215 self.ui = ui
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216
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217 def proxy_open(self, req, proxy, type_):
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218 host = req.get_host().split(':')[0]
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219 if host in self.no_list:
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220 return None
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221
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222 # work around a bug in Python < 2.4.2
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223 # (it leaves a "\n" at the end of Proxy-authorization headers)
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224 baseclass = req.__class__
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225 class _request(baseclass):
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226 def add_header(self, key, val):
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227 if key.lower() == 'proxy-authorization':
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228 val = val.strip()
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229 return baseclass.add_header(self, key, val)
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230 req.__class__ = _request
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231
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232 return urllib2.ProxyHandler.proxy_open(self, req, proxy, type_)
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233
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234 class httpsendfile(file):
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235 def __len__(self):
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236 return os.fstat(self.fileno()).st_size
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237
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238 def _gen_sendfile(connection):
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239 def _sendfile(self, data):
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240 # send a file
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241 if isinstance(data, httpsendfile):
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242 # if auth required, some data sent twice, so rewind here
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243 data.seek(0)
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244 for chunk in util.filechunkiter(data):
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245 connection.send(self, chunk)
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246 else:
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247 connection.send(self, data)
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248 return _sendfile
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249
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250 has_https = hasattr(urllib2, 'HTTPSHandler')
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251 if has_https:
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252 try:
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253 # avoid using deprecated/broken FakeSocket in python 2.6
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254 import ssl
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255 _ssl_wrap_socket = ssl.wrap_socket
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256 except ImportError:
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257 def _ssl_wrap_socket(sock, key_file, cert_file):
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258 ssl = socket.ssl(sock, key_file, cert_file)
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259 return httplib.FakeSocket(sock, ssl)
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260
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261 class httpconnection(keepalive.HTTPConnection):
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262 # must be able to send big bundle as stream.
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263 send = _gen_sendfile(keepalive.HTTPConnection)
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264
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265 def _proxytunnel(self):
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266 proxyheaders = dict(
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267 [(x, self.headers[x]) for x in self.headers
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268 if x.lower().startswith('proxy-')])
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269 self._set_hostport(self.host, self.port)
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270 self.send('CONNECT %s:%d HTTP/1.0\r\n' % (self.realhost, self.realport))
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271 for header in proxyheaders.iteritems():
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272 self.send('%s: %s\r\n' % header)
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273 self.send('\r\n')
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274
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275 # majority of the following code is duplicated from
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276 # httplib.HTTPConnection as there are no adequate places to
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277 # override functions to provide the needed functionality
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278 res = self.response_class(self.sock,
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279 strict=self.strict,
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280 method=self._method)
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281
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282 while True:
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283 version, status, reason = res._read_status()
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284 if status != httplib.CONTINUE:
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285 break
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286 while True:
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287 skip = res.fp.readline().strip()
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288 if not skip:
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289 break
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290 res.status = status
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291 res.reason = reason.strip()
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292
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293 if res.status == 200:
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294 while True:
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295 line = res.fp.readline()
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296 if line == '\r\n':
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297 break
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298 return True
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299
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300 if version == 'HTTP/1.0':
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301 res.version = 10
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302 elif version.startswith('HTTP/1.'):
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303 res.version = 11
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304 elif version == 'HTTP/0.9':
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305 res.version = 9
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306 else:
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307 raise httplib.UnknownProtocol(version)
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308
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309 if res.version == 9:
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310 res.length = None
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311 res.chunked = 0
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312 res.will_close = 1
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313 res.msg = httplib.HTTPMessage(cStringIO.StringIO())
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314 return False
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315
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316 res.msg = httplib.HTTPMessage(res.fp)
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317 res.msg.fp = None
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318
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319 # are we using the chunked-style of transfer encoding?
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320 trenc = res.msg.getheader('transfer-encoding')
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321 if trenc and trenc.lower() == "chunked":
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322 res.chunked = 1
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323 res.chunk_left = None
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324 else:
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325 res.chunked = 0
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326
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327 # will the connection close at the end of the response?
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328 res.will_close = res._check_close()
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329
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330 # do we have a Content-Length?
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331 # NOTE: RFC 2616, S4.4, #3 says we ignore this if tr_enc is "chunked"
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332 length = res.msg.getheader('content-length')
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333 if length and not res.chunked:
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334 try:
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335 res.length = int(length)
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336 except ValueError:
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337 res.length = None
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338 else:
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339 if res.length < 0: # ignore nonsensical negative lengths
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340 res.length = None
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341 else:
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342 res.length = None
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343
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344 # does the body have a fixed length? (of zero)
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345 if (status == httplib.NO_CONTENT or status == httplib.NOT_MODIFIED or
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346 100 <= status < 200 or # 1xx codes
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347 res._method == 'HEAD'):
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348 res.length = 0
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349
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350 # if the connection remains open, and we aren't using chunked, and
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351 # a content-length was not provided, then assume that the connection
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352 # WILL close.
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353 if (not res.will_close and
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354 not res.chunked and
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355 res.length is None):
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356 res.will_close = 1
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357
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358 self.proxyres = res
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359
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360 return False
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361
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362 def connect(self):
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363 if has_https and self.realhost: # use CONNECT proxy
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364 self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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365 self.sock.connect((self.host, self.port))
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366 if self._proxytunnel():
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367 # we do not support client x509 certificates
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368 self.sock = _ssl_wrap_socket(self.sock, None, None)
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369 else:
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370 keepalive.HTTPConnection.connect(self)
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371
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372 def getresponse(self):
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373 proxyres = getattr(self, 'proxyres', None)
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374 if proxyres:
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375 if proxyres.will_close:
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376 self.close()
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377 self.proxyres = None
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378 return proxyres
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379 return keepalive.HTTPConnection.getresponse(self)
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380
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381 class httphandler(keepalive.HTTPHandler):
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382 def http_open(self, req):
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383 return self.do_open(httpconnection, req)
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384
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385 def _start_transaction(self, h, req):
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386 if req.get_selector() == req.get_full_url(): # has proxy
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387 urlparts = urlparse.urlparse(req.get_selector())
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388 if urlparts[0] == 'https': # only use CONNECT for HTTPS
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389 if ':' in urlparts[1]:
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390 realhost, realport = urlparts[1].split(':')
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391 realport = int(realport)
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392 else:
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393 realhost = urlparts[1]
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394 realport = 443
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395
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396 h.realhost = realhost
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397 h.realport = realport
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398 h.headers = req.headers.copy()
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399 h.headers.update(self.parent.addheaders)
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400 return keepalive.HTTPHandler._start_transaction(self, h, req)
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401
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402 h.realhost = None
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403 h.realport = None
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404 h.headers = None
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405 return keepalive.HTTPHandler._start_transaction(self, h, req)
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406
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407 def __del__(self):
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408 self.close_all()
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409
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410 if has_https:
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411 class httpsconnection(httplib.HTTPSConnection):
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412 response_class = keepalive.HTTPResponse
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413 # must be able to send big bundle as stream.
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414 send = _gen_sendfile(httplib.HTTPSConnection)
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415
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416 class httpshandler(keepalive.KeepAliveHandler, urllib2.HTTPSHandler):
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417 def __init__(self, ui):
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418 keepalive.KeepAliveHandler.__init__(self)
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419 urllib2.HTTPSHandler.__init__(self)
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420 self.ui = ui
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421 self.pwmgr = passwordmgr(self.ui)
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422
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423 def https_open(self, req):
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424 self.auth = self.pwmgr.readauthtoken(req.get_full_url())
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425 return self.do_open(self._makeconnection, req)
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426
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427 def _makeconnection(self, host, port=443, *args, **kwargs):
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428 keyfile = None
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429 certfile = None
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430
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431 if args: # key_file
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432 keyfile = args.pop(0)
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433 if args: # cert_file
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434 certfile = args.pop(0)
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435
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436 # if the user has specified different key/cert files in
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437 # hgrc, we prefer these
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438 if self.auth and 'key' in self.auth and 'cert' in self.auth:
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439 keyfile = self.auth['key']
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440 certfile = self.auth['cert']
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441
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442 # let host port take precedence
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443 if ':' in host and '[' not in host or ']:' in host:
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444 host, port = host.rsplit(':', 1)
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445 port = int(port)
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446 if '[' in host:
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447 host = host[1:-1]
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448
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449 return httpsconnection(host, port, keyfile, certfile, *args, **kwargs)
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450
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451 # In python < 2.5 AbstractDigestAuthHandler raises a ValueError if
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452 # it doesn't know about the auth type requested. This can happen if
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453 # somebody is using BasicAuth and types a bad password.
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454 class httpdigestauthhandler(urllib2.HTTPDigestAuthHandler):
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455 def http_error_auth_reqed(self, auth_header, host, req, headers):
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456 try:
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457 return urllib2.HTTPDigestAuthHandler.http_error_auth_reqed(
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458 self, auth_header, host, req, headers)
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459 except ValueError, inst:
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460 arg = inst.args[0]
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|
|
461 if arg.startswith("AbstractDigestAuthHandler doesn't know "):
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|
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462 return
|
|
|
463 raise
|
|
|
464
|
|
|
465 def getauthinfo(path):
|
|
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466 scheme, netloc, urlpath, query, frag = urlparse.urlsplit(path)
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|
|
467 if not urlpath:
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|
468 urlpath = '/'
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|
469 if scheme != 'file':
|
|
|
470 # XXX: why are we quoting the path again with some smart
|
|
|
471 # heuristic here? Anyway, it cannot be done with file://
|
|
|
472 # urls since path encoding is os/fs dependent (see
|
|
|
473 # urllib.pathname2url() for details).
|
|
|
474 urlpath = quotepath(urlpath)
|
|
|
475 host, port, user, passwd = netlocsplit(netloc)
|
|
|
476
|
|
|
477 # urllib cannot handle URLs with embedded user or passwd
|
|
|
478 url = urlparse.urlunsplit((scheme, netlocunsplit(host, port),
|
|
|
479 urlpath, query, frag))
|
|
|
480 if user:
|
|
|
481 netloc = host
|
|
|
482 if port:
|
|
|
483 netloc += ':' + port
|
|
|
484 # Python < 2.4.3 uses only the netloc to search for a password
|
|
|
485 authinfo = (None, (url, netloc), user, passwd or '')
|
|
|
486 else:
|
|
|
487 authinfo = None
|
|
|
488 return url, authinfo
|
|
|
489
|
|
|
490 def opener(ui, authinfo=None):
|
|
|
491 '''
|
|
|
492 construct an opener suitable for urllib2
|
|
|
493 authinfo will be added to the password manager
|
|
|
494 '''
|
|
|
495 handlers = [httphandler()]
|
|
|
496 if has_https:
|
|
|
497 handlers.append(httpshandler(ui))
|
|
|
498
|
|
|
499 handlers.append(proxyhandler(ui))
|
|
|
500
|
|
|
501 passmgr = passwordmgr(ui)
|
|
|
502 if authinfo is not None:
|
|
|
503 passmgr.add_password(*authinfo)
|
|
|
504 user, passwd = authinfo[2:4]
|
|
|
505 ui.debug(_('http auth: user %s, password %s\n') %
|
|
|
506 (user, passwd and '*' * len(passwd) or 'not set'))
|
|
|
507
|
|
|
508 handlers.extend((urllib2.HTTPBasicAuthHandler(passmgr),
|
|
|
509 httpdigestauthhandler(passmgr)))
|
|
|
510 opener = urllib2.build_opener(*handlers)
|
|
|
511
|
|
|
512 # 1.0 here is the _protocol_ version
|
|
|
513 opener.addheaders = [('User-agent', 'mercurial/proto-1.0')]
|
|
|
514 opener.addheaders.append(('Accept', 'application/mercurial-0.1'))
|
|
|
515 return opener
|
|
|
516
|
|
|
517 scheme_re = re.compile(r'^([a-zA-Z0-9+-.]+)://')
|
|
|
518
|
|
|
519 def open(ui, url, data=None):
|
|
|
520 scheme = None
|
|
|
521 m = scheme_re.search(url)
|
|
|
522 if m:
|
|
|
523 scheme = m.group(1).lower()
|
|
|
524 if not scheme:
|
|
|
525 path = util.normpath(os.path.abspath(url))
|
|
|
526 url = 'file://' + urllib.pathname2url(path)
|
|
|
527 authinfo = None
|
|
|
528 else:
|
|
|
529 url, authinfo = getauthinfo(url)
|
|
|
530 return opener(ui, authinfo).open(url, data)
|
