Mercurial > hg
annotate mercurial/sshpeer.py @ 37614:a81d02ea65db
wireproto: move version 1 peer functionality to standalone module (API)
wireproto.py contains code for both the client and the server. There
*should* be a somewhat strong separation between the two.
This commit extracts the client-side code from wireproto.py into a new
module - wireprotov1peer.
Differential Revision: https://phab.mercurial-scm.org/D3259
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Wed, 11 Apr 2018 12:49:08 -0700 |
parents | aacfca6f9767 |
children | 0664be4f0c1f |
rev | line source |
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1 # sshpeer.py - ssh repository proxy class for mercurial |
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2 # |
2859 | 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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import re |
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11 import uuid |
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12 |
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13 from .i18n import _ |
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14 from . import ( |
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15 error, |
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16 pycompat, |
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17 util, |
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18 wireproto, |
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19 wireprotoserver, |
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20 wireprototypes, |
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21 wireprotov1peer, |
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22 ) |
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23 from .utils import ( |
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24 procutil, |
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25 ) |
60 | 26 |
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27 def _serverquote(s): |
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28 """quote a string for the remote shell ... which we assume is sh""" |
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29 if not s: |
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30 return s |
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31 if re.match('[a-zA-Z0-9@%_+=:,./-]*$', s): |
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32 return s |
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33 return "'%s'" % s.replace("'", "'\\''") |
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34 |
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35 def _forwardoutput(ui, pipe): |
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36 """display all data currently available on pipe as remote output. |
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37 |
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38 This is non blocking.""" |
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39 if pipe: |
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40 s = procutil.readpipe(pipe) |
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41 if s: |
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42 for l in s.splitlines(): |
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43 ui.status(_("remote: "), l, '\n') |
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44 |
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45 class doublepipe(object): |
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46 """Operate a side-channel pipe in addition of a main one |
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47 |
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48 The side-channel pipe contains server output to be forwarded to the user |
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49 input. The double pipe will behave as the "main" pipe, but will ensure the |
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50 content of the "side" pipe is properly processed while we wait for blocking |
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51 call on the "main" pipe. |
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52 |
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53 If large amounts of data are read from "main", the forward will cease after |
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54 the first bytes start to appear. This simplifies the implementation |
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55 without affecting actual output of sshpeer too much as we rarely issue |
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56 large read for data not yet emitted by the server. |
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57 |
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58 The main pipe is expected to be a 'bufferedinputpipe' from the util module |
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59 that handle all the os specific bits. This class lives in this module |
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60 because it focus on behavior specific to the ssh protocol.""" |
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61 |
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62 def __init__(self, ui, main, side): |
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63 self._ui = ui |
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64 self._main = main |
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65 self._side = side |
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66 |
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67 def _wait(self): |
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68 """wait until some data are available on main or side |
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69 |
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70 return a pair of boolean (ismainready, issideready) |
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71 |
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72 (This will only wait for data if the setup is supported by `util.poll`) |
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73 """ |
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74 if (isinstance(self._main, util.bufferedinputpipe) and |
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75 self._main.hasbuffer): |
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76 # Main has data. Assume side is worth poking at. |
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77 return True, True |
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78 |
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79 fds = [self._main.fileno(), self._side.fileno()] |
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80 try: |
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81 act = util.poll(fds) |
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82 except NotImplementedError: |
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83 # non supported yet case, assume all have data. |
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84 act = fds |
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85 return (self._main.fileno() in act, self._side.fileno() in act) |
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86 |
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87 def write(self, data): |
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88 return self._call('write', data) |
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89 |
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90 def read(self, size): |
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91 r = self._call('read', size) |
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92 if size != 0 and not r: |
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93 # We've observed a condition that indicates the |
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94 # stdout closed unexpectedly. Check stderr one |
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95 # more time and snag anything that's there before |
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96 # letting anyone know the main part of the pipe |
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97 # closed prematurely. |
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98 _forwardoutput(self._ui, self._side) |
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99 return r |
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100 |
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101 def readline(self): |
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102 return self._call('readline') |
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103 |
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104 def _call(self, methname, data=None): |
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105 """call <methname> on "main", forward output of "side" while blocking |
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106 """ |
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107 # data can be '' or 0 |
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108 if (data is not None and not data) or self._main.closed: |
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109 _forwardoutput(self._ui, self._side) |
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110 return '' |
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111 while True: |
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112 mainready, sideready = self._wait() |
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113 if sideready: |
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114 _forwardoutput(self._ui, self._side) |
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115 if mainready: |
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116 meth = getattr(self._main, methname) |
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117 if data is None: |
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118 return meth() |
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119 else: |
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120 return meth(data) |
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121 |
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122 def close(self): |
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123 return self._main.close() |
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124 |
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125 def flush(self): |
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126 return self._main.flush() |
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127 |
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128 def _cleanuppipes(ui, pipei, pipeo, pipee): |
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129 """Clean up pipes used by an SSH connection.""" |
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130 if pipeo: |
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131 pipeo.close() |
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132 if pipei: |
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133 pipei.close() |
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134 |
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135 if pipee: |
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136 # Try to read from the err descriptor until EOF. |
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137 try: |
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138 for l in pipee: |
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139 ui.status(_('remote: '), l) |
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140 except (IOError, ValueError): |
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141 pass |
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142 |
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143 pipee.close() |
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144 |
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145 def _makeconnection(ui, sshcmd, args, remotecmd, path, sshenv=None): |
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146 """Create an SSH connection to a server. |
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147 |
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148 Returns a tuple of (process, stdin, stdout, stderr) for the |
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149 spawned process. |
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150 """ |
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151 cmd = '%s %s %s' % ( |
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152 sshcmd, |
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153 args, |
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154 procutil.shellquote('%s -R %s serve --stdio' % ( |
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155 _serverquote(remotecmd), _serverquote(path)))) |
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156 |
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157 ui.debug('running %s\n' % cmd) |
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158 cmd = procutil.quotecommand(cmd) |
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159 |
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160 # no buffer allow the use of 'select' |
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161 # feel free to remove buffering and select usage when we ultimately |
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162 # move to threading. |
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163 stdin, stdout, stderr, proc = procutil.popen4(cmd, bufsize=0, env=sshenv) |
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164 |
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165 return proc, stdin, stdout, stderr |
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166 |
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167 def _clientcapabilities(): |
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168 """Return list of capabilities of this client. |
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169 |
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170 Returns a list of capabilities that are supported by this client. |
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171 """ |
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172 protoparams = {'partial-pull'} |
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173 comps = [e.wireprotosupport().name for e in |
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174 util.compengines.supportedwireengines(util.CLIENTROLE)] |
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175 protoparams.add('comp=%s' % ','.join(comps)) |
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176 return protoparams |
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177 |
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178 def _performhandshake(ui, stdin, stdout, stderr): |
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179 def badresponse(): |
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180 # Flush any output on stderr. |
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181 _forwardoutput(ui, stderr) |
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182 |
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183 msg = _('no suitable response from remote hg') |
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184 hint = ui.config('ui', 'ssherrorhint') |
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185 raise error.RepoError(msg, hint=hint) |
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186 |
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187 # The handshake consists of sending wire protocol commands in reverse |
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188 # order of protocol implementation and then sniffing for a response |
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189 # to one of them. |
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190 # |
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191 # Those commands (from oldest to newest) are: |
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192 # |
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193 # ``between`` |
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194 # Asks for the set of revisions between a pair of revisions. Command |
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195 # present in all Mercurial server implementations. |
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196 # |
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197 # ``hello`` |
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198 # Instructs the server to advertise its capabilities. Introduced in |
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199 # Mercurial 0.9.1. |
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200 # |
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201 # ``upgrade`` |
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202 # Requests upgrade from default transport protocol version 1 to |
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203 # a newer version. Introduced in Mercurial 4.6 as an experimental |
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204 # feature. |
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205 # |
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206 # The ``between`` command is issued with a request for the null |
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207 # range. If the remote is a Mercurial server, this request will |
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208 # generate a specific response: ``1\n\n``. This represents the |
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209 # wire protocol encoded value for ``\n``. We look for ``1\n\n`` |
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210 # in the output stream and know this is the response to ``between`` |
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211 # and we're at the end of our handshake reply. |
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212 # |
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213 # The response to the ``hello`` command will be a line with the |
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214 # length of the value returned by that command followed by that |
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215 # value. If the server doesn't support ``hello`` (which should be |
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216 # rare), that line will be ``0\n``. Otherwise, the value will contain |
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217 # RFC 822 like lines. Of these, the ``capabilities:`` line contains |
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218 # the capabilities of the server. |
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219 # |
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220 # The ``upgrade`` command isn't really a command in the traditional |
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221 # sense of version 1 of the transport because it isn't using the |
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222 # proper mechanism for formatting insteads: instead, it just encodes |
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223 # arguments on the line, delimited by spaces. |
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224 # |
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225 # The ``upgrade`` line looks like ``upgrade <token> <capabilities>``. |
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226 # If the server doesn't support protocol upgrades, it will reply to |
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227 # this line with ``0\n``. Otherwise, it emits an |
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228 # ``upgraded <token> <protocol>`` line to both stdout and stderr. |
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229 # Content immediately following this line describes additional |
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230 # protocol and server state. |
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231 # |
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232 # In addition to the responses to our command requests, the server |
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233 # may emit "banner" output on stdout. SSH servers are allowed to |
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234 # print messages to stdout on login. Issuing commands on connection |
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235 # allows us to flush this banner output from the server by scanning |
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236 # for output to our well-known ``between`` command. Of course, if |
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237 # the banner contains ``1\n\n``, this will throw off our detection. |
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238 |
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239 requestlog = ui.configbool('devel', 'debug.peer-request') |
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240 |
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241 # Generate a random token to help identify responses to version 2 |
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242 # upgrade request. |
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243 token = pycompat.sysbytes(str(uuid.uuid4())) |
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244 upgradecaps = [ |
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245 ('proto', wireprotoserver.SSHV2), |
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246 ] |
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247 upgradecaps = util.urlreq.urlencode(upgradecaps) |
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248 |
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249 try: |
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250 pairsarg = '%s-%s' % ('0' * 40, '0' * 40) |
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251 handshake = [ |
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252 'hello\n', |
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253 'between\n', |
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254 'pairs %d\n' % len(pairsarg), |
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255 pairsarg, |
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256 ] |
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257 |
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258 # Request upgrade to version 2 if configured. |
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259 if ui.configbool('experimental', 'sshpeer.advertise-v2'): |
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260 ui.debug('sending upgrade request: %s %s\n' % (token, upgradecaps)) |
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261 handshake.insert(0, 'upgrade %s %s\n' % (token, upgradecaps)) |
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262 |
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263 if requestlog: |
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264 ui.debug('devel-peer-request: hello\n') |
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265 ui.debug('sending hello command\n') |
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266 if requestlog: |
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267 ui.debug('devel-peer-request: between\n') |
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268 ui.debug('devel-peer-request: pairs: %d bytes\n' % len(pairsarg)) |
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269 ui.debug('sending between command\n') |
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270 |
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271 stdin.write(''.join(handshake)) |
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272 stdin.flush() |
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273 except IOError: |
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274 badresponse() |
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275 |
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276 # Assume version 1 of wire protocol by default. |
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277 protoname = wireprototypes.SSHV1 |
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278 reupgraded = re.compile(b'^upgraded %s (.*)$' % re.escape(token)) |
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279 |
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280 lines = ['', 'dummy'] |
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281 max_noise = 500 |
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282 while lines[-1] and max_noise: |
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283 try: |
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284 l = stdout.readline() |
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285 _forwardoutput(ui, stderr) |
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286 |
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287 # Look for reply to protocol upgrade request. It has a token |
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288 # in it, so there should be no false positives. |
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289 m = reupgraded.match(l) |
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290 if m: |
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291 protoname = m.group(1) |
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292 ui.debug('protocol upgraded to %s\n' % protoname) |
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293 # If an upgrade was handled, the ``hello`` and ``between`` |
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294 # requests are ignored. The next output belongs to the |
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295 # protocol, so stop scanning lines. |
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296 break |
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297 |
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298 # Otherwise it could be a banner, ``0\n`` response if server |
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299 # doesn't support upgrade. |
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300 |
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301 if lines[-1] == '1\n' and l == '\n': |
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302 break |
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303 if l: |
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304 ui.debug('remote: ', l) |
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305 lines.append(l) |
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306 max_noise -= 1 |
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307 except IOError: |
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308 badresponse() |
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309 else: |
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310 badresponse() |
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311 |
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312 caps = set() |
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313 |
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314 # For version 1, we should see a ``capabilities`` line in response to the |
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315 # ``hello`` command. |
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316 if protoname == wireprototypes.SSHV1: |
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317 for l in reversed(lines): |
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318 # Look for response to ``hello`` command. Scan from the back so |
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319 # we don't misinterpret banner output as the command reply. |
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320 if l.startswith('capabilities:'): |
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321 caps.update(l[:-1].split(':')[1].split()) |
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322 break |
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323 elif protoname == wireprotoserver.SSHV2: |
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324 # We see a line with number of bytes to follow and then a value |
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325 # looking like ``capabilities: *``. |
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326 line = stdout.readline() |
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327 try: |
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328 valuelen = int(line) |
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329 except ValueError: |
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330 badresponse() |
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331 |
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332 capsline = stdout.read(valuelen) |
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333 if not capsline.startswith('capabilities: '): |
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334 badresponse() |
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335 |
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336 ui.debug('remote: %s\n' % capsline) |
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337 |
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338 caps.update(capsline.split(':')[1].split()) |
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339 # Trailing newline. |
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340 stdout.read(1) |
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341 |
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342 # Error if we couldn't find capabilities, this means: |
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343 # |
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344 # 1. Remote isn't a Mercurial server |
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345 # 2. Remote is a <0.9.1 Mercurial server |
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346 # 3. Remote is a future Mercurial server that dropped ``hello`` |
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347 # and other attempted handshake mechanisms. |
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348 if not caps: |
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349 badresponse() |
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350 |
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351 # Flush any output on stderr before proceeding. |
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352 _forwardoutput(ui, stderr) |
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353 |
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354 return protoname, caps |
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355 |
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356 class sshv1peer(wireprotov1peer.wirepeer): |
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357 def __init__(self, ui, url, proc, stdin, stdout, stderr, caps, |
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358 autoreadstderr=True): |
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359 """Create a peer from an existing SSH connection. |
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360 |
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361 ``proc`` is a handle on the underlying SSH process. |
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362 ``stdin``, ``stdout``, and ``stderr`` are handles on the stdio |
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363 pipes for that process. |
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364 ``caps`` is a set of capabilities supported by the remote. |
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365 ``autoreadstderr`` denotes whether to automatically read from |
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366 stderr and to forward its output. |
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367 """ |
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368 self._url = url |
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369 self.ui = ui |
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370 # self._subprocess is unused. Keeping a handle on the process |
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371 # holds a reference and prevents it from being garbage collected. |
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372 self._subprocess = proc |
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373 |
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374 # And we hook up our "doublepipe" wrapper to allow querying |
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375 # stderr any time we perform I/O. |
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376 if autoreadstderr: |
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377 stdout = doublepipe(ui, util.bufferedinputpipe(stdout), stderr) |
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378 stdin = doublepipe(ui, stdin, stderr) |
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379 |
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380 self._pipeo = stdin |
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381 self._pipei = stdout |
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382 self._pipee = stderr |
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383 self._caps = caps |
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384 self._autoreadstderr = autoreadstderr |
2549
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Added ability to clone from a local repository to a (new) remote one.
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385 |
36367
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386 # Commands that have a "framed" response where the first line of the |
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387 # response contains the length of that response. |
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388 _FRAMED_COMMANDS = { |
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389 'batch', |
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390 } |
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391 |
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392 # Begin of ipeerconnection interface. |
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393 |
2673
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394 def url(self): |
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395 return self._url |
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396 |
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397 def local(self): |
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398 return None |
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399 |
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400 def peer(self): |
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401 return self |
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402 |
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|
403 def canpush(self): |
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404 return True |
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|
405 |
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406 def close(self): |
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407 pass |
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|
408 |
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409 # End of ipeerconnection interface. |
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|
410 |
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411 # Begin of ipeercommands interface. |
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|
412 |
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|
413 def capabilities(self): |
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414 return self._caps |
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|
415 |
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416 # End of ipeercommands interface. |
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|
417 |
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418 def _readerr(self): |
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419 _forwardoutput(self.ui, self._pipee) |
624
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Add an sshrepository class and hg serve --stdio
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|
420 |
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|
421 def _abort(self, exception): |
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|
422 self._cleanup() |
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423 raise exception |
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|
424 |
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|
425 def _cleanup(self): |
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|
426 _cleanuppipes(self.ui, self._pipei, self._pipeo, self._pipee) |
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|
427 |
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|
428 __del__ = _cleanup |
3034
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|
429 |
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|
430 def _sendrequest(self, cmd, args, framed=False): |
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|
431 if (self.ui.debugflag |
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|
432 and self.ui.configbool('devel', 'debug.peer-request')): |
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|
433 dbg = self.ui.debug |
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|
434 line = 'devel-peer-request: %s\n' |
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|
435 dbg(line % cmd) |
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|
436 for key, value in sorted(args.items()): |
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|
437 if not isinstance(value, dict): |
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|
438 dbg(line % ' %s: %d bytes' % (key, len(value))) |
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|
439 else: |
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|
440 for dk, dv in sorted(value.items()): |
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|
441 dbg(line % ' %s-%s: %d' % (key, dk, len(dv))) |
9467
4c041f1ee1b4
do not attempt to translate ui.debug output
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|
442 self.ui.debug("sending %s command\n" % cmd) |
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|
443 self._pipeo.write("%s\n" % cmd) |
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|
444 _func, names = wireproto.commands[cmd] |
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|
445 keys = names.split() |
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|
446 wireargs = {} |
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|
447 for k in keys: |
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|
448 if k == '*': |
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|
449 wireargs['*'] = args |
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|
450 break |
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451 else: |
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|
452 wireargs[k] = args[k] |
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|
453 del args[k] |
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|
454 for k, v in sorted(wireargs.iteritems()): |
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|
455 self._pipeo.write("%s %d\n" % (k, len(v))) |
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|
456 if isinstance(v, dict): |
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|
457 for dk, dv in v.iteritems(): |
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|
458 self._pipeo.write("%s %d\n" % (dk, len(dv))) |
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|
459 self._pipeo.write(dv) |
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wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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|
460 else: |
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|
461 self._pipeo.write(v) |
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|
462 self._pipeo.flush() |
624
876333a295ff
Add an sshrepository class and hg serve --stdio
Matt Mackall <mpm@selenic.com>
parents:
623
diff
changeset
|
463 |
36367
043e77f3be09
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parents:
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diff
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|
464 # We know exactly how many bytes are in the response. So return a proxy |
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parents:
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diff
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|
465 # around the raw output stream that allows reading exactly this many |
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diff
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|
466 # bytes. Callers then can read() without fear of overrunning the |
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parents:
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|
467 # response. |
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parents:
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diff
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|
468 if framed: |
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parents:
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diff
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|
469 amount = self._getamount() |
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diff
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|
470 return util.cappedreader(self._pipei, amount) |
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diff
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|
471 |
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|
472 return self._pipei |
624
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Add an sshrepository class and hg serve --stdio
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parents:
623
diff
changeset
|
473 |
36366
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
474 def _callstream(self, cmd, **args): |
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sshpeer: move logic for sending a request into a new function
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parents:
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diff
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|
475 args = pycompat.byteskwargs(args) |
36367
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parents:
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diff
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|
476 return self._sendrequest(cmd, args, framed=cmd in self._FRAMED_COMMANDS) |
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parents:
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diff
changeset
|
477 |
20905
167047ba3cfa
wireproto: drop the _decompress method in favor a new call type
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20794
diff
changeset
|
478 def _callcompressable(self, cmd, **args): |
36366
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parents:
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diff
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|
479 args = pycompat.byteskwargs(args) |
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parents:
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|
480 return self._sendrequest(cmd, args, framed=cmd in self._FRAMED_COMMANDS) |
20905
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wireproto: drop the _decompress method in favor a new call type
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20794
diff
changeset
|
481 |
11589
e8d22fe2ddab
protocol: clean up call-like functions in http and ssh clients
Matt Mackall <mpm@selenic.com>
parents:
11588
diff
changeset
|
482 def _call(self, cmd, **args): |
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parents:
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|
483 args = pycompat.byteskwargs(args) |
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parents:
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diff
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|
484 return self._sendrequest(cmd, args, framed=True).read() |
5978
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
5293
diff
changeset
|
485 |
11592
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protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents:
11591
diff
changeset
|
486 def _callpush(self, cmd, fp, **args): |
36372
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
487 # The server responds with an empty frame if the client should |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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parents:
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|
488 # continue submitting the payload. |
11592
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parents:
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diff
changeset
|
489 r = self._call(cmd, **args) |
26e0782b8380
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parents:
11591
diff
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|
490 if r: |
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parents:
11591
diff
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|
491 return '', r |
36372
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diff
changeset
|
492 |
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parents:
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diff
changeset
|
493 # The payload consists of frames with content followed by an empty |
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wireproto: document the wonky push protocol for SSH
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parents:
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diff
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|
494 # frame. |
29727
0dbd788a2dfd
sshpeer: use `iter(callable, sentinel)` instead of while True
Augie Fackler <augie@google.com>
parents:
29389
diff
changeset
|
495 for d in iter(lambda: fp.read(4096), ''): |
36363
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sshpeer: rename _recv and _send to _readframed and _writeframed
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
496 self._writeframed(d) |
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parents:
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diff
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|
497 self._writeframed("", flush=True) |
36372
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diff
changeset
|
498 |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
499 # In case of success, there is an empty frame and a frame containing |
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wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
500 # the integer result (as a string). |
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parents:
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diff
changeset
|
501 # In case of error, there is a non-empty frame containing the error. |
36363
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parents:
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diff
changeset
|
502 r = self._readframed() |
11592
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parents:
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diff
changeset
|
503 if r: |
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diff
changeset
|
504 return '', r |
36363
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diff
changeset
|
505 return self._readframed(), '' |
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parents:
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diff
changeset
|
506 |
21073
83ce71ef7804
sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
507 def _calltwowaystream(self, cmd, fp, **args): |
36372
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|
508 # The server responds with an empty frame if the client should |
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diff
changeset
|
509 # continue submitting the payload. |
21073
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sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
510 r = self._call(cmd, **args) |
83ce71ef7804
sshpeer: add implementation of _calltwowaystream
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parents:
20905
diff
changeset
|
511 if r: |
83ce71ef7804
sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
512 # XXX needs to be made better |
29389
98e8313dcd9e
i18n: translate abort messages
liscju <piotr.listkiewicz@gmail.com>
parents:
28438
diff
changeset
|
513 raise error.Abort(_('unexpected remote reply: %s') % r) |
36372
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diff
changeset
|
514 |
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diff
changeset
|
515 # The payload consists of frames with content followed by an empty |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
516 # frame. |
29727
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Augie Fackler <augie@google.com>
parents:
29389
diff
changeset
|
517 for d in iter(lambda: fp.read(4096), ''): |
36363
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parents:
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diff
changeset
|
518 self._writeframed(d) |
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parents:
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diff
changeset
|
519 self._writeframed("", flush=True) |
36372
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diff
changeset
|
520 |
33768
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parents:
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diff
changeset
|
521 return self._pipei |
11591
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protocol: unify client changegroup methods
Matt Mackall <mpm@selenic.com>
parents:
11590
diff
changeset
|
522 |
28438
48fd02dac1d4
wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents:
27798
diff
changeset
|
523 def _getamount(self): |
33768
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parents:
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diff
changeset
|
524 l = self._pipei.readline() |
15017
f4522df38c65
wireproto: add out-of-band error class to allow remote repo to report errors
Andrew Pritchard <andrewp@fogcreek.com>
parents:
14537
diff
changeset
|
525 if l == '\n': |
36608
1151c731686e
sshpeer: don't read from stderr when that behavior is disabled
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parents:
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diff
changeset
|
526 if self._autoreadstderr: |
1151c731686e
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parents:
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diff
changeset
|
527 self._readerr() |
25243
d65243d28749
sshpeer: break "OutOfBandError" feature for ssh (BC)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23684
diff
changeset
|
528 msg = _('check previous remote output') |
d65243d28749
sshpeer: break "OutOfBandError" feature for ssh (BC)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23684
diff
changeset
|
529 self._abort(error.OutOfBandError(hint=msg)) |
36608
1151c731686e
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parents:
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diff
changeset
|
530 if self._autoreadstderr: |
1151c731686e
sshpeer: don't read from stderr when that behavior is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
531 self._readerr() |
646
342927da4f4c
Show remote client output with "remote:"
Matt Mackall <mpm@selenic.com>
parents:
644
diff
changeset
|
532 try: |
28438
48fd02dac1d4
wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents:
27798
diff
changeset
|
533 return int(l) |
14004
97ed99d1f419
eliminate various naked except clauses
Idan Kamara <idankk86@gmail.com>
parents:
13827
diff
changeset
|
534 except ValueError: |
11590
0b15aee0a306
protocol: convert some ssh abort calls
Matt Mackall <mpm@selenic.com>
parents:
11589
diff
changeset
|
535 self._abort(error.ResponseError(_("unexpected response:"), l)) |
28438
48fd02dac1d4
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Augie Fackler <augie@google.com>
parents:
27798
diff
changeset
|
536 |
36363
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diff
changeset
|
537 def _readframed(self): |
36628
70415568ea65
sshpeer: don't read(0)
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parents:
36608
diff
changeset
|
538 size = self._getamount() |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
539 if not size: |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36608
diff
changeset
|
540 return b'' |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36608
diff
changeset
|
541 |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
542 return self._pipei.read(size) |
5978
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
5293
diff
changeset
|
543 |
36363
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parents:
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diff
changeset
|
544 def _writeframed(self, data, flush=False): |
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diff
changeset
|
545 self._pipeo.write("%d\n" % len(data)) |
5978
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diff
changeset
|
546 if data: |
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diff
changeset
|
547 self._pipeo.write(data) |
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diff
changeset
|
548 if flush: |
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diff
changeset
|
549 self._pipeo.flush() |
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diff
changeset
|
550 if self._autoreadstderr: |
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parents:
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diff
changeset
|
551 self._readerr() |
2612
ffb895f16925
add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2549
diff
changeset
|
552 |
35978
59e4a7781a36
sshpeer: implement peer for version 2 of wire protocol
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parents:
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diff
changeset
|
553 class sshv2peer(sshv1peer): |
59e4a7781a36
sshpeer: implement peer for version 2 of wire protocol
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parents:
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diff
changeset
|
554 """A peer that speakers version 2 of the transport protocol.""" |
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diff
changeset
|
555 # Currently version 2 is identical to version 1 post handshake. |
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diff
changeset
|
556 # And handshake is performed before the peer is instantiated. So |
59e4a7781a36
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diff
changeset
|
557 # we need no custom code. |
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diff
changeset
|
558 |
36533
1a36ef7df70a
sshpeer: support not reading and forwarding stderr
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36487
diff
changeset
|
559 def makepeer(ui, path, proc, stdin, stdout, stderr, autoreadstderr=True): |
36487
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diff
changeset
|
560 """Make a peer instance from existing pipes. |
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diff
changeset
|
561 |
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diff
changeset
|
562 ``path`` and ``proc`` are stored on the eventual peer instance and may |
dabf86721200
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diff
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|
563 not be used for anything meaningful. |
dabf86721200
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parents:
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diff
changeset
|
564 |
dabf86721200
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diff
changeset
|
565 ``stdin``, ``stdout``, and ``stderr`` are the pipes connected to the |
dabf86721200
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diff
changeset
|
566 SSH server's stdio handles. |
dabf86721200
sshpeer: factor out code for creating peers from pipes
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
567 |
dabf86721200
sshpeer: factor out code for creating peers from pipes
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parents:
36372
diff
changeset
|
568 This function is factored out to allow creating peers that don't |
dabf86721200
sshpeer: factor out code for creating peers from pipes
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
569 actually spawn a new process. It is useful for starting SSH protocol |
dabf86721200
sshpeer: factor out code for creating peers from pipes
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parents:
36372
diff
changeset
|
570 servers and clients via non-standard means, which can be useful for |
dabf86721200
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
571 testing. |
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parents:
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diff
changeset
|
572 """ |
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573 try: |
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574 protoname, caps = _performhandshake(ui, stdin, stdout, stderr) |
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575 except Exception: |
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576 _cleanuppipes(ui, stdout, stdin, stderr) |
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577 raise |
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578 |
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579 if protoname == wireprototypes.SSHV1: |
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580 return sshv1peer(ui, path, proc, stdin, stdout, stderr, caps, |
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581 autoreadstderr=autoreadstderr) |
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582 elif protoname == wireprototypes.SSHV2: |
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583 return sshv2peer(ui, path, proc, stdin, stdout, stderr, caps, |
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584 autoreadstderr=autoreadstderr) |
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585 else: |
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586 _cleanuppipes(ui, stdout, stdin, stderr) |
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587 raise error.RepoError(_('unknown version of SSH protocol: %s') % |
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588 protoname) |
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589 |
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590 def instance(ui, path, create): |
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591 """Create an SSH peer. |
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592 |
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593 The returned object conforms to the ``wireprotov1peer.wirepeer`` interface. |
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594 """ |
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595 u = util.url(path, parsequery=False, parsefragment=False) |
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596 if u.scheme != 'ssh' or not u.host or u.path is None: |
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597 raise error.RepoError(_("couldn't parse location %s") % path) |
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598 |
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599 util.checksafessh(path) |
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600 |
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601 if u.passwd is not None: |
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602 raise error.RepoError(_('password in URL not supported')) |
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603 |
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604 sshcmd = ui.config('ui', 'ssh') |
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605 remotecmd = ui.config('ui', 'remotecmd') |
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606 sshaddenv = dict(ui.configitems('sshenv')) |
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607 sshenv = procutil.shellenviron(sshaddenv) |
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608 remotepath = u.path or '.' |
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609 |
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610 args = procutil.sshargs(sshcmd, u.host, u.user, u.port) |
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611 |
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612 if create: |
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613 cmd = '%s %s %s' % (sshcmd, args, |
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614 procutil.shellquote('%s init %s' % |
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615 (_serverquote(remotecmd), _serverquote(remotepath)))) |
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616 ui.debug('running %s\n' % cmd) |
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617 res = ui.system(cmd, blockedtag='sshpeer', environ=sshenv) |
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618 if res != 0: |
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619 raise error.RepoError(_('could not create remote repo')) |
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620 |
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621 proc, stdin, stdout, stderr = _makeconnection(ui, sshcmd, args, remotecmd, |
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622 remotepath, sshenv) |
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623 |
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624 peer = makepeer(ui, path, proc, stdin, stdout, stderr) |
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625 |
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626 # Finally, if supported by the server, notify it about our own |
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627 # capabilities. |
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628 if 'protocaps' in peer.capabilities(): |
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629 try: |
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630 peer._call("protocaps", |
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631 caps=' '.join(sorted(_clientcapabilities()))) |
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632 except IOError: |
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633 peer._cleanup() |
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634 raise error.RepoError(_('capability exchange failed')) |
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635 |
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636 return peer |