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1 # httprepo.py - HTTP repository proxy classes for mercurial
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2 #
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3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2, incorporated herein by reference.
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8
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9 from node import bin, hex, nullid
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10 from i18n import _
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11 import repo, changegroup, statichttprepo, error, url, util
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12 import os, urllib, urllib2, urlparse, zlib, httplib
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13 import errno, socket
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14
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15 def zgenerator(f):
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16 zd = zlib.decompressobj()
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17 try:
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18 for chunk in util.filechunkiter(f):
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19 yield zd.decompress(chunk)
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20 except httplib.HTTPException:
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21 raise IOError(None, _('connection ended unexpectedly'))
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22 yield zd.flush()
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23
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24 class httprepository(repo.repository):
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25 def __init__(self, ui, path):
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26 self.path = path
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27 self.caps = None
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28 self.handler = None
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29 scheme, netloc, urlpath, query, frag = urlparse.urlsplit(path)
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30 if query or frag:
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31 raise util.Abort(_('unsupported URL component: "%s"') %
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32 (query or frag))
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33
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34 # urllib cannot handle URLs with embedded user or passwd
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35 self._url, authinfo = url.getauthinfo(path)
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36
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37 self.ui = ui
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38 self.ui.debug(_('using %s\n') % self._url)
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39
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40 self.urlopener = url.opener(ui, authinfo)
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41
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42 def __del__(self):
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43 for h in self.urlopener.handlers:
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44 h.close()
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45 if hasattr(h, "close_all"):
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46 h.close_all()
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47
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48 def url(self):
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49 return self.path
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50
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51 # look up capabilities only when needed
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52
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53 def get_caps(self):
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54 if self.caps is None:
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55 try:
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56 self.caps = set(self.do_read('capabilities').split())
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57 except error.RepoError:
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58 self.caps = set()
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59 self.ui.debug(_('capabilities: %s\n') %
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60 (' '.join(self.caps or ['none'])))
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61 return self.caps
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62
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63 capabilities = property(get_caps)
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64
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65 def lock(self):
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66 raise util.Abort(_('operation not supported over http'))
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67
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68 def do_cmd(self, cmd, **args):
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69 data = args.pop('data', None)
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70 headers = args.pop('headers', {})
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71 self.ui.debug(_("sending %s command\n") % cmd)
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72 q = {"cmd": cmd}
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73 q.update(args)
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74 qs = '?%s' % urllib.urlencode(q)
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75 cu = "%s%s" % (self._url, qs)
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76 try:
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77 if data:
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78 self.ui.debug(_("sending %s bytes\n") % len(data))
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79 resp = self.urlopener.open(urllib2.Request(cu, data, headers))
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80 except urllib2.HTTPError, inst:
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81 if inst.code == 401:
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82 raise util.Abort(_('authorization failed'))
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83 raise
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84 except httplib.HTTPException, inst:
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85 self.ui.debug(_('http error while sending %s command\n') % cmd)
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86 self.ui.traceback()
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87 raise IOError(None, inst)
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88 except IndexError:
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89 # this only happens with Python 2.3, later versions raise URLError
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90 raise util.Abort(_('http error, possibly caused by proxy setting'))
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91 # record the url we got redirected to
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92 resp_url = resp.geturl()
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93 if resp_url.endswith(qs):
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94 resp_url = resp_url[:-len(qs)]
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95 if self._url != resp_url:
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96 self.ui.status(_('real URL is %s\n') % resp_url)
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97 self._url = resp_url
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98 try:
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99 proto = resp.getheader('content-type')
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100 except AttributeError:
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101 proto = resp.headers['content-type']
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102
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103 safeurl = url.hidepassword(self._url)
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104 # accept old "text/plain" and "application/hg-changegroup" for now
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105 if not (proto.startswith('application/mercurial-') or
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106 proto.startswith('text/plain') or
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107 proto.startswith('application/hg-changegroup')):
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108 self.ui.debug(_("requested URL: '%s'\n") % url.hidepassword(cu))
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109 raise error.RepoError(_("'%s' does not appear to be an hg repository")
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110 % safeurl)
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111
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112 if proto.startswith('application/mercurial-'):
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113 try:
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114 version = proto.split('-', 1)[1]
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115 version_info = tuple([int(n) for n in version.split('.')])
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116 except ValueError:
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117 raise error.RepoError(_("'%s' sent a broken Content-Type "
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118 "header (%s)") % (safeurl, proto))
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119 if version_info > (0, 1):
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120 raise error.RepoError(_("'%s' uses newer protocol %s") %
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121 (safeurl, version))
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122
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123 return resp
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124
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125 def do_read(self, cmd, **args):
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126 fp = self.do_cmd(cmd, **args)
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127 try:
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128 return fp.read()
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129 finally:
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130 # if using keepalive, allow connection to be reused
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131 fp.close()
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132
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133 def lookup(self, key):
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134 self.requirecap('lookup', _('look up remote revision'))
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135 d = self.do_cmd("lookup", key = key).read()
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136 success, data = d[:-1].split(' ', 1)
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137 if int(success):
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138 return bin(data)
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139 raise error.RepoError(data)
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140
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141 def heads(self):
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142 d = self.do_read("heads")
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143 try:
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144 return map(bin, d[:-1].split(" "))
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145 except:
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146 raise error.ResponseError(_("unexpected response:"), d)
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147
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148 def branchmap(self):
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149 d = self.do_read("branchmap")
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150 try:
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151 branchmap = {}
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152 for branchpart in d.splitlines():
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153 branchheads = branchpart.split(' ')
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154 branchname = urllib.unquote(branchheads[0])
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155 branchheads = [bin(x) for x in branchheads[1:]]
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156 branchmap[branchname] = branchheads
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157 return branchmap
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158 except:
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159 raise error.ResponseError(_("unexpected response:"), d)
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160
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161 def branches(self, nodes):
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162 n = " ".join(map(hex, nodes))
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163 d = self.do_read("branches", nodes=n)
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164 try:
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165 br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
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166 return br
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167 except:
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168 raise error.ResponseError(_("unexpected response:"), d)
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169
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170 def between(self, pairs):
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171 batch = 8 # avoid giant requests
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172 r = []
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173 for i in xrange(0, len(pairs), batch):
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174 n = " ".join(["-".join(map(hex, p)) for p in pairs[i:i + batch]])
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175 d = self.do_read("between", pairs=n)
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176 try:
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177 r += [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
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178 except:
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179 raise error.ResponseError(_("unexpected response:"), d)
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180 return r
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181
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182 def changegroup(self, nodes, kind):
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183 n = " ".join(map(hex, nodes))
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184 f = self.do_cmd("changegroup", roots=n)
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185 return util.chunkbuffer(zgenerator(f))
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186
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187 def changegroupsubset(self, bases, heads, source):
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188 self.requirecap('changegroupsubset', _('look up remote changes'))
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189 baselst = " ".join([hex(n) for n in bases])
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190 headlst = " ".join([hex(n) for n in heads])
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191 f = self.do_cmd("changegroupsubset", bases=baselst, heads=headlst)
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192 return util.chunkbuffer(zgenerator(f))
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193
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194 def unbundle(self, cg, heads, source):
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195 # have to stream bundle to a temp file because we do not have
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196 # http 1.1 chunked transfer.
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197
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198 type = ""
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199 types = self.capable('unbundle')
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200 # servers older than d1b16a746db6 will send 'unbundle' as a
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201 # boolean capability
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202 try:
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203 types = types.split(',')
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204 except AttributeError:
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205 types = [""]
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206 if types:
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207 for x in types:
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208 if x in changegroup.bundletypes:
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209 type = x
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210 break
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211
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212 tempname = changegroup.writebundle(cg, None, type)
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213 fp = url.httpsendfile(tempname, "rb")
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214 try:
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215 try:
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216 resp = self.do_read(
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217 'unbundle', data=fp,
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218 headers={'Content-Type': 'application/octet-stream'},
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219 heads=' '.join(map(hex, heads)))
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220 resp_code, output = resp.split('\n', 1)
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221 try:
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222 ret = int(resp_code)
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223 except ValueError, err:
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224 raise error.ResponseError(
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225 _('push failed (unexpected response):'), resp)
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226 self.ui.write(output)
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227 return ret
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228 except socket.error, err:
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229 if err[0] in (errno.ECONNRESET, errno.EPIPE):
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230 raise util.Abort(_('push failed: %s') % err[1])
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231 raise util.Abort(err[1])
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232 finally:
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233 fp.close()
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234 os.unlink(tempname)
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235
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236 def stream_out(self):
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237 return self.do_cmd('stream_out')
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238
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239 class httpsrepository(httprepository):
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240 def __init__(self, ui, path):
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241 if not url.has_https:
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242 raise util.Abort(_('Python support for SSL and HTTPS '
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243 'is not installed'))
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244 httprepository.__init__(self, ui, path)
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245
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246 def instance(ui, path, create):
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247 if create:
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248 raise util.Abort(_('cannot create new http repository'))
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249 try:
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250 if path.startswith('https:'):
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251 inst = httpsrepository(ui, path)
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252 else:
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253 inst = httprepository(ui, path)
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254 inst.between([(nullid, nullid)])
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255 return inst
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256 except error.RepoError:
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257 ui.note('(falling back to static-http)\n')
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258 return statichttprepo.instance(ui, "static-" + path, create)
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