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1 | 1 | # httprepo.py - HTTP repository proxy classes for mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
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4 | 4 | # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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5 | 5 | # |
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6 | 6 | # This software may be used and distributed according to the terms of the |
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7 | 7 | # GNU General Public License version 2 or any later version. |
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8 | 8 | |
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9 | 9 | from node import nullid |
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10 | 10 | from i18n import _ |
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11 | 11 | import changegroup, statichttprepo, error, url, util, wireproto |
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12 | 12 | import os, urllib, urllib2, zlib, httplib |
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13 | 13 | import errno, socket |
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14 | 14 | |
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15 | 15 | def zgenerator(f): |
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16 | 16 | zd = zlib.decompressobj() |
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17 | 17 | try: |
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18 | 18 | for chunk in util.filechunkiter(f): |
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19 | 19 | while chunk: |
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20 | 20 | yield zd.decompress(chunk, 2**18) |
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21 | 21 | chunk = zd.unconsumed_tail |
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22 | 22 | except httplib.HTTPException: |
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23 | 23 | raise IOError(None, _('connection ended unexpectedly')) |
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24 | 24 | yield zd.flush() |
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25 | 25 | |
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26 | 26 | class httprepository(wireproto.wirerepository): |
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27 | 27 | def __init__(self, ui, path): |
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28 | 28 | self.path = path |
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29 | 29 | self.caps = None |
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30 | 30 | self.handler = None |
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31 | 31 | u = util.url(path) |
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32 | 32 | if u.query or u.fragment: |
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33 | 33 | raise util.Abort(_('unsupported URL component: "%s"') % |
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34 | 34 | (u.query or u.fragment)) |
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35 | 35 | |
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36 | 36 | # urllib cannot handle URLs with embedded user or passwd |
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37 | 37 | self._url, authinfo = u.authinfo() |
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38 | 38 | |
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39 | 39 | self.ui = ui |
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40 | 40 | self.ui.debug('using %s\n' % self._url) |
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41 | 41 | |
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42 | 42 | self.urlopener = url.opener(ui, authinfo) |
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43 | 43 | |
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44 | 44 | def __del__(self): |
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45 | 45 | for h in self.urlopener.handlers: |
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46 | 46 | h.close() |
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47 | 47 | if hasattr(h, "close_all"): |
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48 | 48 | h.close_all() |
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49 | 49 | |
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50 | 50 | def url(self): |
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51 | 51 | return self.path |
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52 | 52 | |
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53 | 53 | # look up capabilities only when needed |
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54 | 54 | |
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55 | 55 | def _fetchcaps(self): |
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56 | 56 | self.caps = set(self._call('capabilities').split()) |
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57 | 57 | |
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58 | 58 | def get_caps(self): |
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59 | 59 | if self.caps is None: |
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60 | 60 | try: |
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61 | 61 | self._fetchcaps() |
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62 | 62 | except error.RepoError: |
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63 | 63 | self.caps = set() |
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64 | 64 | self.ui.debug('capabilities: %s\n' % |
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65 | 65 | (' '.join(self.caps or ['none']))) |
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66 | 66 | return self.caps |
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67 | 67 | |
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68 | 68 | capabilities = property(get_caps) |
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69 | 69 | |
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70 | 70 | def lock(self): |
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71 | 71 | raise util.Abort(_('operation not supported over http')) |
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72 | 72 | |
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73 | 73 | def _callstream(self, cmd, **args): |
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74 | 74 | if cmd == 'pushkey': |
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75 | 75 | args['data'] = '' |
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76 | 76 | data = args.pop('data', None) |
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77 | 77 | headers = args.pop('headers', {}) |
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78 | 78 | self.ui.debug("sending %s command\n" % cmd) |
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79 | 79 | q = [('cmd', cmd)] |
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80 | 80 | headersize = 0 |
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81 | 81 | if len(args) > 0: |
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82 | 82 | httpheader = self.capable('httpheader') |
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83 | 83 | if httpheader: |
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84 | 84 | headersize = int(httpheader.split(',')[0]) |
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85 | 85 | if headersize > 0: |
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86 | 86 | # The headers can typically carry more data than the URL. |
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87 | 87 | encargs = urllib.urlencode(sorted(args.items())) |
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88 | 88 | headerfmt = 'X-HgArg-%s' |
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89 | 89 | contentlen = headersize - len(headerfmt % '000' + ': \r\n') |
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90 | 90 | headernum = 0 |
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91 | 91 | for i in xrange(0, len(encargs), contentlen): |
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92 | 92 | headernum += 1 |
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93 | 93 | header = headerfmt % str(headernum) |
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94 | 94 | headers[header] = encargs[i:i + contentlen] |
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95 | 95 | varyheaders = [headerfmt % str(h) for h in range(1, headernum + 1)] |
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96 | 96 | headers['Vary'] = ','.join(varyheaders) |
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97 | 97 | else: |
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98 | 98 | q += sorted(args.items()) |
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99 | 99 | qs = '?%s' % urllib.urlencode(q) |
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100 | 100 | cu = "%s%s" % (self._url, qs) |
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101 | 101 | req = urllib2.Request(cu, data, headers) |
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102 | 102 | if data is not None: |
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103 | 103 | # len(data) is broken if data doesn't fit into Py_ssize_t |
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104 | 104 | # add the header ourself to avoid OverflowError |
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105 | 105 | size = data.__len__() |
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106 | 106 | self.ui.debug("sending %s bytes\n" % size) |
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107 | 107 | req.add_unredirected_header('Content-Length', '%d' % size) |
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108 | 108 | try: |
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109 | 109 | resp = self.urlopener.open(req) |
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110 | 110 | except urllib2.HTTPError, inst: |
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111 | 111 | if inst.code == 401: |
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112 | 112 | raise util.Abort(_('authorization failed')) |
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113 | 113 | raise |
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114 | 114 | except httplib.HTTPException, inst: |
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115 | 115 | self.ui.debug('http error while sending %s command\n' % cmd) |
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116 | 116 | self.ui.traceback() |
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117 | 117 | raise IOError(None, inst) |
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118 | 118 | except IndexError: |
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119 | 119 | # this only happens with Python 2.3, later versions raise URLError |
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120 | 120 | raise util.Abort(_('http error, possibly caused by proxy setting')) |
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121 | 121 | # record the url we got redirected to |
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122 | 122 | resp_url = resp.geturl() |
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123 | 123 | if resp_url.endswith(qs): |
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124 | 124 | resp_url = resp_url[:-len(qs)] |
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125 | 125 | if self._url.rstrip('/') != resp_url.rstrip('/'): |
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126 | 126 | self.ui.status(_('real URL is %s\n') % resp_url) |
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127 | 127 | self._url = resp_url |
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128 | 128 | try: |
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129 | 129 | proto = resp.getheader('content-type') |
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130 | 130 | except AttributeError: |
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131 | 131 | proto = resp.headers['content-type'] |
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132 | 132 | |
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133 | 133 | safeurl = util.hidepassword(self._url) |
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134 | 134 | # accept old "text/plain" and "application/hg-changegroup" for now |
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135 | 135 | if not (proto.startswith('application/mercurial-') or |
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136 | 136 | proto.startswith('text/plain') or |
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137 | 137 | proto.startswith('application/hg-changegroup')): |
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138 | 138 | self.ui.debug("requested URL: '%s'\n" % util.hidepassword(cu)) |
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139 | 139 | raise error.RepoError( |
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140 | 140 | _("'%s' does not appear to be an hg repository:\n" |
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141 | 141 | "---%%<--- (%s)\n%s\n---%%<---\n") |
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142 | 142 | % (safeurl, proto, resp.read())) |
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143 | 143 | |
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144 | 144 | if proto.startswith('application/mercurial-'): |
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145 | 145 | try: |
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146 | 146 | version = proto.split('-', 1)[1] |
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147 | 147 | version_info = tuple([int(n) for n in version.split('.')]) |
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148 | 148 | except ValueError: |
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149 | 149 | raise error.RepoError(_("'%s' sent a broken Content-Type " |
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150 | 150 | "header (%s)") % (safeurl, proto)) |
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151 | 151 | if version_info > (0, 1): |
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152 | 152 | raise error.RepoError(_("'%s' uses newer protocol %s") % |
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153 | 153 | (safeurl, version)) |
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154 | 154 | |
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155 | 155 | return resp |
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156 | 156 | |
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157 | 157 | def _call(self, cmd, **args): |
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158 | 158 | fp = self._callstream(cmd, **args) |
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159 | 159 | try: |
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160 | 160 | return fp.read() |
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161 | 161 | finally: |
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162 | 162 | # if using keepalive, allow connection to be reused |
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163 | 163 | fp.close() |
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164 | 164 | |
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165 | 165 | def _callpush(self, cmd, cg, **args): |
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166 | 166 | # have to stream bundle to a temp file because we do not have |
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167 | 167 | # http 1.1 chunked transfer. |
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168 | 168 | |
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169 | 169 | types = self.capable('unbundle') |
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170 | 170 | try: |
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171 | 171 | types = types.split(',') |
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172 | 172 | except AttributeError: |
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173 | 173 | # servers older than d1b16a746db6 will send 'unbundle' as a |
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174 | 174 | # boolean capability. They only support headerless/uncompressed |
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175 | 175 | # bundles. |
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176 | 176 | types = [""] |
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177 | 177 | for x in types: |
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178 | 178 | if x in changegroup.bundletypes: |
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179 | 179 | type = x |
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180 | 180 | break |
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181 | 181 | |
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182 | 182 | tempname = changegroup.writebundle(cg, None, type) |
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183 | 183 | fp = url.httpsendfile(self.ui, tempname, "rb") |
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184 | 184 | headers = {'Content-Type': 'application/mercurial-0.1'} |
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185 | 185 | |
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186 | 186 | try: |
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187 | 187 | try: |
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188 | 188 | r = self._call(cmd, data=fp, headers=headers, **args) |
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189 | 189 | return r.split('\n', 1) |
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190 | 190 | except socket.error, err: |
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191 | 191 | if err.args[0] in (errno.ECONNRESET, errno.EPIPE): |
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192 | 192 | raise util.Abort(_('push failed: %s') % err.args[1]) |
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193 | 193 | raise util.Abort(err.args[1]) |
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194 | 194 | finally: |
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195 | 195 | fp.close() |
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196 | 196 | os.unlink(tempname) |
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197 | 197 | |
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198 | 198 | def _abort(self, exception): |
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199 | 199 | raise exception |
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200 | 200 | |
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201 | 201 | def _decompress(self, stream): |
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202 | 202 | return util.chunkbuffer(zgenerator(stream)) |
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203 | 203 | |
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204 | 204 | class httpsrepository(httprepository): |
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205 | 205 | def __init__(self, ui, path): |
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206 | 206 | if not url.has_https: |
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207 | 207 | raise util.Abort(_('Python support for SSL and HTTPS ' |
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208 | 208 | 'is not installed')) |
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209 | 209 | httprepository.__init__(self, ui, path) |
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210 | 210 | |
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211 | 211 | def instance(ui, path, create): |
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212 | 212 | if create: |
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213 | 213 | raise util.Abort(_('cannot create new http repository')) |
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214 | 214 | try: |
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215 | 215 | if path.startswith('https:'): |
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216 | 216 | inst = httpsrepository(ui, path) |
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217 | 217 | else: |
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218 | 218 | inst = httprepository(ui, path) |
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219 | 219 | try: |
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220 | 220 | # Try to do useful work when checking compatibility. |
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221 | 221 | # Usually saves a roundtrip since we want the caps anyway. |
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222 | 222 | inst._fetchcaps() |
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223 | 223 | except error.RepoError: |
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224 | 224 | # No luck, try older compatibility check. |
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225 | 225 | inst.between([(nullid, nullid)]) |
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226 | 226 | return inst |
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227 | except error.RepoError: | |
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227 | except error.RepoError, httpexception: | |
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228 | try: | |
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229 | r = statichttprepo.instance(ui, "static-" + path, create) | |
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228 | 230 | ui.note('(falling back to static-http)\n') |
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229 | return statichttprepo.instance(ui, "static-" + path, create) | |
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231 | return r | |
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232 | except error.RepoError: | |
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233 | raise httpexception # use the original http RepoError instead |
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