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1 # sshrepo.py - ssh repository proxy class 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 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from i18n import _ |
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9 import util, error, wireproto |
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10 import re |
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11 |
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12 class remotelock(object): |
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13 def __init__(self, repo): |
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14 self.repo = repo |
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15 def release(self): |
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16 self.repo.unlock() |
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17 self.repo = None |
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18 def __del__(self): |
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19 if self.repo: |
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20 self.release() |
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21 |
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22 class sshrepository(wireproto.wirerepository): |
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23 def __init__(self, ui, path, create=0): |
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24 self._url = path |
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25 self.ui = ui |
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26 |
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27 m = re.match(r'^ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?$', path) |
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28 if not m: |
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29 self._abort(error.RepoError(_("couldn't parse location %s") % path)) |
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30 |
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31 self.user = m.group(2) |
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32 self.host = m.group(3) |
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33 self.port = m.group(5) |
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34 self.path = m.group(7) or "." |
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35 |
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36 sshcmd = self.ui.config("ui", "ssh", "ssh") |
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37 remotecmd = self.ui.config("ui", "remotecmd", "hg") |
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38 |
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39 args = util.sshargs(sshcmd, self.host, self.user, self.port) |
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40 |
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41 if create: |
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42 cmd = '%s %s "%s init %s"' |
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43 cmd = cmd % (sshcmd, args, remotecmd, self.path) |
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44 |
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45 ui.note(_('running %s\n') % cmd) |
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46 res = util.system(cmd) |
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47 if res != 0: |
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48 self._abort(error.RepoError(_("could not create remote repo"))) |
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49 |
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50 self.validate_repo(ui, sshcmd, args, remotecmd) |
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51 |
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52 def url(self): |
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53 return self._url |
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54 |
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55 def validate_repo(self, ui, sshcmd, args, remotecmd): |
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56 # cleanup up previous run |
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57 self.cleanup() |
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58 |
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59 cmd = '%s %s "%s -R %s serve --stdio"' |
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60 cmd = cmd % (sshcmd, args, remotecmd, self.path) |
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61 |
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62 cmd = util.quotecommand(cmd) |
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63 ui.note(_('running %s\n') % cmd) |
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64 self.pipeo, self.pipei, self.pipee = util.popen3(cmd) |
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65 |
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66 # skip any noise generated by remote shell |
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67 self._callstream("hello") |
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68 r = self._callstream("between", pairs=("%s-%s" % ("0"*40, "0"*40))) |
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69 lines = ["", "dummy"] |
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70 max_noise = 500 |
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71 while lines[-1] and max_noise: |
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72 l = r.readline() |
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73 self.readerr() |
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74 if lines[-1] == "1\n" and l == "\n": |
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75 break |
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76 if l: |
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77 ui.debug("remote: ", l) |
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78 lines.append(l) |
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79 max_noise -= 1 |
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80 else: |
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81 self._abort(error.RepoError(_("no suitable response from remote hg"))) |
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82 |
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83 self.capabilities = set() |
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84 for l in reversed(lines): |
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85 if l.startswith("capabilities:"): |
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86 self.capabilities.update(l[:-1].split(":")[1].split()) |
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87 break |
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88 |
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89 def readerr(self): |
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90 while 1: |
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91 size = util.fstat(self.pipee).st_size |
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92 if size == 0: |
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93 break |
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94 l = self.pipee.readline() |
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95 if not l: |
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96 break |
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97 self.ui.status(_("remote: "), l) |
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98 |
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99 def _abort(self, exception): |
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100 self.cleanup() |
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101 raise exception |
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102 |
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103 def cleanup(self): |
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104 try: |
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105 self.pipeo.close() |
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106 self.pipei.close() |
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107 # read the error descriptor until EOF |
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108 for l in self.pipee: |
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109 self.ui.status(_("remote: "), l) |
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110 self.pipee.close() |
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111 except: |
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112 pass |
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113 |
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114 __del__ = cleanup |
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115 |
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116 def _callstream(self, cmd, **args): |
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117 self.ui.debug("sending %s command\n" % cmd) |
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118 self.pipeo.write("%s\n" % cmd) |
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119 for k, v in sorted(args.iteritems()): |
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120 self.pipeo.write("%s %d\n" % (k, len(v))) |
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121 self.pipeo.write(v) |
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122 self.pipeo.flush() |
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123 |
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124 return self.pipei |
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125 |
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126 def _call(self, cmd, **args): |
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127 self._callstream(cmd, **args) |
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128 return self._recv() |
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129 |
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130 def _callpush(self, cmd, fp, **args): |
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131 r = self._call(cmd, **args) |
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132 if r: |
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133 return '', r |
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134 while 1: |
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135 d = fp.read(4096) |
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136 if not d: |
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137 break |
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138 self._send(d) |
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139 self._send("", flush=True) |
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140 r = self._recv() |
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141 if r: |
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142 return '', r |
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143 return self._recv(), '' |
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144 |
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145 def _decompress(self, stream): |
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146 return stream |
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147 |
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148 def _recv(self): |
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149 l = self.pipei.readline() |
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150 self.readerr() |
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151 try: |
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152 l = int(l) |
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153 except: |
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154 self._abort(error.ResponseError(_("unexpected response:"), l)) |
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155 return self.pipei.read(l) |
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156 |
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157 def _send(self, data, flush=False): |
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158 self.pipeo.write("%d\n" % len(data)) |
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159 if data: |
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160 self.pipeo.write(data) |
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161 if flush: |
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162 self.pipeo.flush() |
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163 self.readerr() |
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164 |
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165 def lock(self): |
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166 self._call("lock") |
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167 return remotelock(self) |
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168 |
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169 def unlock(self): |
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170 self._call("unlock") |
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171 |
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172 def addchangegroup(self, cg, source, url): |
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173 '''Send a changegroup to the remote server. Return an integer |
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174 similar to unbundle(). DEPRECATED, since it requires locking the |
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175 remote.''' |
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176 d = self._call("addchangegroup") |
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177 if d: |
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178 self._abort(error.RepoError(_("push refused: %s") % d)) |
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179 while 1: |
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180 d = cg.read(4096) |
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181 if not d: |
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182 break |
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183 self.pipeo.write(d) |
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184 self.readerr() |
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185 |
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186 self.pipeo.flush() |
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187 |
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188 self.readerr() |
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189 r = self._recv() |
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190 if not r: |
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191 return 1 |
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192 try: |
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193 return int(r) |
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194 except: |
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195 self._abort(error.ResponseError(_("unexpected response:"), r)) |
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196 |
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197 instance = sshrepository |