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