Mercurial > hg
annotate mercurial/sshpeer.py @ 42252:a42cc325b682
gendoc: nest command headers under category headers
Differential Revision: https://phab.mercurial-scm.org/D6329
author | Sietse Brouwer <sbbrouwer@gmail.com> |
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date | Fri, 26 Apr 2019 12:41:48 +0200 |
parents | 089fc0db0954 |
children | 2372284d9457 |
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peer: introduce real peer classes
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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 wireprotoserver, |
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19 wireprototypes, |
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20 wireprotov1peer, |
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21 wireprotov1server, |
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22 ) |
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23 from .utils import ( |
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24 procutil, |
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25 stringutil, |
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26 ) |
60 | 27 |
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28 def _serverquote(s): |
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29 """quote a string for the remote shell ... which we assume is sh""" |
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30 if not s: |
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31 return s |
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32 if re.match('[a-zA-Z0-9@%_+=:,./-]*$', s): |
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33 return s |
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34 return "'%s'" % s.replace("'", "'\\''") |
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35 |
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36 def _forwardoutput(ui, pipe): |
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37 """display all data currently available on pipe as remote output. |
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38 |
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39 This is non blocking.""" |
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40 if pipe: |
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41 s = procutil.readpipe(pipe) |
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42 if s: |
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43 for l in s.splitlines(): |
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44 ui.status(_("remote: "), l, '\n') |
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45 |
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46 class doublepipe(object): |
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47 """Operate a side-channel pipe in addition of a main one |
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48 |
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49 The side-channel pipe contains server output to be forwarded to the user |
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50 input. The double pipe will behave as the "main" pipe, but will ensure the |
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51 content of the "side" pipe is properly processed while we wait for blocking |
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52 call on the "main" pipe. |
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53 |
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54 If large amounts of data are read from "main", the forward will cease after |
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55 the first bytes start to appear. This simplifies the implementation |
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56 without affecting actual output of sshpeer too much as we rarely issue |
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57 large read for data not yet emitted by the server. |
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58 |
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59 The main pipe is expected to be a 'bufferedinputpipe' from the util module |
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60 that handle all the os specific bits. This class lives in this module |
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61 because it focus on behavior specific to the ssh protocol.""" |
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62 |
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63 def __init__(self, ui, main, side): |
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64 self._ui = ui |
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65 self._main = main |
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66 self._side = side |
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67 |
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68 def _wait(self): |
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69 """wait until some data are available on main or side |
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70 |
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71 return a pair of boolean (ismainready, issideready) |
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72 |
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73 (This will only wait for data if the setup is supported by `util.poll`) |
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74 """ |
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75 if (isinstance(self._main, util.bufferedinputpipe) and |
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76 self._main.hasbuffer): |
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77 # Main has data. Assume side is worth poking at. |
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78 return True, True |
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79 |
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80 fds = [self._main.fileno(), self._side.fileno()] |
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81 try: |
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82 act = util.poll(fds) |
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83 except NotImplementedError: |
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84 # non supported yet case, assume all have data. |
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85 act = fds |
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86 return (self._main.fileno() in act, self._side.fileno() in act) |
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87 |
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88 def write(self, data): |
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89 return self._call('write', data) |
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90 |
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91 def read(self, size): |
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92 r = self._call('read', size) |
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93 if size != 0 and not r: |
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94 # We've observed a condition that indicates the |
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95 # stdout closed unexpectedly. Check stderr one |
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96 # more time and snag anything that's there before |
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97 # letting anyone know the main part of the pipe |
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98 # closed prematurely. |
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99 _forwardoutput(self._ui, self._side) |
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100 return r |
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101 |
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102 def unbufferedread(self, size): |
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103 r = self._call('unbufferedread', size) |
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104 if size != 0 and not r: |
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105 # We've observed a condition that indicates the |
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106 # stdout closed unexpectedly. Check stderr one |
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107 # more time and snag anything that's there before |
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108 # letting anyone know the main part of the pipe |
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109 # closed prematurely. |
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110 _forwardoutput(self._ui, self._side) |
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111 return r |
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112 |
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113 def readline(self): |
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114 return self._call('readline') |
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115 |
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116 def _call(self, methname, data=None): |
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117 """call <methname> on "main", forward output of "side" while blocking |
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118 """ |
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119 # data can be '' or 0 |
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120 if (data is not None and not data) or self._main.closed: |
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121 _forwardoutput(self._ui, self._side) |
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122 return '' |
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123 while True: |
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124 mainready, sideready = self._wait() |
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125 if sideready: |
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126 _forwardoutput(self._ui, self._side) |
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127 if mainready: |
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128 meth = getattr(self._main, methname) |
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129 if data is None: |
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130 return meth() |
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131 else: |
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132 return meth(data) |
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133 |
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134 def close(self): |
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135 return self._main.close() |
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136 |
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137 def flush(self): |
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138 return self._main.flush() |
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139 |
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140 def _cleanuppipes(ui, pipei, pipeo, pipee): |
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141 """Clean up pipes used by an SSH connection.""" |
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142 if pipeo: |
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143 pipeo.close() |
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144 if pipei: |
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145 pipei.close() |
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146 |
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147 if pipee: |
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148 # Try to read from the err descriptor until EOF. |
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149 try: |
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150 for l in pipee: |
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151 ui.status(_('remote: '), l) |
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152 except (IOError, ValueError): |
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153 pass |
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154 |
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155 pipee.close() |
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156 |
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157 def _makeconnection(ui, sshcmd, args, remotecmd, path, sshenv=None): |
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158 """Create an SSH connection to a server. |
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159 |
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160 Returns a tuple of (process, stdin, stdout, stderr) for the |
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161 spawned process. |
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162 """ |
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163 cmd = '%s %s %s' % ( |
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164 sshcmd, |
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165 args, |
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166 procutil.shellquote('%s -R %s serve --stdio' % ( |
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167 _serverquote(remotecmd), _serverquote(path)))) |
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168 |
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169 ui.debug('running %s\n' % cmd) |
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170 cmd = procutil.quotecommand(cmd) |
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171 |
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172 # no buffer allow the use of 'select' |
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173 # feel free to remove buffering and select usage when we ultimately |
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174 # move to threading. |
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175 stdin, stdout, stderr, proc = procutil.popen4(cmd, bufsize=0, env=sshenv) |
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176 |
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177 return proc, stdin, stdout, stderr |
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178 |
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179 def _clientcapabilities(): |
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180 """Return list of capabilities of this client. |
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181 |
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182 Returns a list of capabilities that are supported by this client. |
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183 """ |
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184 protoparams = {'partial-pull'} |
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185 comps = [e.wireprotosupport().name for e in |
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186 util.compengines.supportedwireengines(util.CLIENTROLE)] |
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187 protoparams.add('comp=%s' % ','.join(comps)) |
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188 return protoparams |
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189 |
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190 def _performhandshake(ui, stdin, stdout, stderr): |
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191 def badresponse(): |
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192 # Flush any output on stderr. |
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193 _forwardoutput(ui, stderr) |
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194 |
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195 msg = _('no suitable response from remote hg') |
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196 hint = ui.config('ui', 'ssherrorhint') |
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197 raise error.RepoError(msg, hint=hint) |
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198 |
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199 # The handshake consists of sending wire protocol commands in reverse |
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200 # order of protocol implementation and then sniffing for a response |
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201 # to one of them. |
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202 # |
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203 # Those commands (from oldest to newest) are: |
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204 # |
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205 # ``between`` |
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206 # Asks for the set of revisions between a pair of revisions. Command |
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207 # present in all Mercurial server implementations. |
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208 # |
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209 # ``hello`` |
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210 # Instructs the server to advertise its capabilities. Introduced in |
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211 # Mercurial 0.9.1. |
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212 # |
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213 # ``upgrade`` |
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214 # Requests upgrade from default transport protocol version 1 to |
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215 # a newer version. Introduced in Mercurial 4.6 as an experimental |
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216 # feature. |
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217 # |
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218 # The ``between`` command is issued with a request for the null |
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219 # range. If the remote is a Mercurial server, this request will |
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220 # generate a specific response: ``1\n\n``. This represents the |
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221 # wire protocol encoded value for ``\n``. We look for ``1\n\n`` |
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222 # in the output stream and know this is the response to ``between`` |
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223 # and we're at the end of our handshake reply. |
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224 # |
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225 # The response to the ``hello`` command will be a line with the |
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226 # length of the value returned by that command followed by that |
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227 # value. If the server doesn't support ``hello`` (which should be |
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228 # rare), that line will be ``0\n``. Otherwise, the value will contain |
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229 # RFC 822 like lines. Of these, the ``capabilities:`` line contains |
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230 # the capabilities of the server. |
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231 # |
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232 # The ``upgrade`` command isn't really a command in the traditional |
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233 # sense of version 1 of the transport because it isn't using the |
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234 # proper mechanism for formatting insteads: instead, it just encodes |
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235 # arguments on the line, delimited by spaces. |
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236 # |
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237 # The ``upgrade`` line looks like ``upgrade <token> <capabilities>``. |
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238 # If the server doesn't support protocol upgrades, it will reply to |
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239 # this line with ``0\n``. Otherwise, it emits an |
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240 # ``upgraded <token> <protocol>`` line to both stdout and stderr. |
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241 # Content immediately following this line describes additional |
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242 # protocol and server state. |
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243 # |
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244 # In addition to the responses to our command requests, the server |
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245 # may emit "banner" output on stdout. SSH servers are allowed to |
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246 # print messages to stdout on login. Issuing commands on connection |
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247 # allows us to flush this banner output from the server by scanning |
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248 # for output to our well-known ``between`` command. Of course, if |
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249 # the banner contains ``1\n\n``, this will throw off our detection. |
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250 |
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251 requestlog = ui.configbool('devel', 'debug.peer-request') |
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252 |
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253 # Generate a random token to help identify responses to version 2 |
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254 # upgrade request. |
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255 token = pycompat.sysbytes(str(uuid.uuid4())) |
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256 upgradecaps = [ |
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257 ('proto', wireprotoserver.SSHV2), |
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258 ] |
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259 upgradecaps = util.urlreq.urlencode(upgradecaps) |
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260 |
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261 try: |
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262 pairsarg = '%s-%s' % ('0' * 40, '0' * 40) |
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263 handshake = [ |
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264 'hello\n', |
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265 'between\n', |
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266 'pairs %d\n' % len(pairsarg), |
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267 pairsarg, |
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268 ] |
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269 |
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270 # Request upgrade to version 2 if configured. |
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271 if ui.configbool('experimental', 'sshpeer.advertise-v2'): |
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272 ui.debug('sending upgrade request: %s %s\n' % (token, upgradecaps)) |
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273 handshake.insert(0, 'upgrade %s %s\n' % (token, upgradecaps)) |
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274 |
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275 if requestlog: |
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276 ui.debug('devel-peer-request: hello+between\n') |
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277 ui.debug('devel-peer-request: pairs: %d bytes\n' % len(pairsarg)) |
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278 ui.debug('sending hello command\n') |
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279 ui.debug('sending between command\n') |
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280 |
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281 stdin.write(''.join(handshake)) |
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282 stdin.flush() |
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283 except IOError: |
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284 badresponse() |
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285 |
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286 # Assume version 1 of wire protocol by default. |
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287 protoname = wireprototypes.SSHV1 |
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288 reupgraded = re.compile(b'^upgraded %s (.*)$' % stringutil.reescape(token)) |
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289 |
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290 lines = ['', 'dummy'] |
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291 max_noise = 500 |
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292 while lines[-1] and max_noise: |
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293 try: |
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294 l = stdout.readline() |
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295 _forwardoutput(ui, stderr) |
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296 |
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297 # Look for reply to protocol upgrade request. It has a token |
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298 # in it, so there should be no false positives. |
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299 m = reupgraded.match(l) |
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300 if m: |
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301 protoname = m.group(1) |
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302 ui.debug('protocol upgraded to %s\n' % protoname) |
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303 # If an upgrade was handled, the ``hello`` and ``between`` |
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304 # requests are ignored. The next output belongs to the |
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305 # protocol, so stop scanning lines. |
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306 break |
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307 |
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308 # Otherwise it could be a banner, ``0\n`` response if server |
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309 # doesn't support upgrade. |
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310 |
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311 if lines[-1] == '1\n' and l == '\n': |
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312 break |
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313 if l: |
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314 ui.debug('remote: ', l) |
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315 lines.append(l) |
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316 max_noise -= 1 |
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317 except IOError: |
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318 badresponse() |
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319 else: |
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320 badresponse() |
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321 |
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322 caps = set() |
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323 |
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324 # For version 1, we should see a ``capabilities`` line in response to the |
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325 # ``hello`` command. |
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326 if protoname == wireprototypes.SSHV1: |
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327 for l in reversed(lines): |
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328 # Look for response to ``hello`` command. Scan from the back so |
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329 # we don't misinterpret banner output as the command reply. |
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330 if l.startswith('capabilities:'): |
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331 caps.update(l[:-1].split(':')[1].split()) |
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332 break |
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333 elif protoname == wireprotoserver.SSHV2: |
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334 # We see a line with number of bytes to follow and then a value |
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335 # looking like ``capabilities: *``. |
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336 line = stdout.readline() |
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337 try: |
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338 valuelen = int(line) |
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339 except ValueError: |
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340 badresponse() |
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341 |
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342 capsline = stdout.read(valuelen) |
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343 if not capsline.startswith('capabilities: '): |
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344 badresponse() |
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345 |
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346 ui.debug('remote: %s\n' % capsline) |
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347 |
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348 caps.update(capsline.split(':')[1].split()) |
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349 # Trailing newline. |
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350 stdout.read(1) |
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351 |
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352 # Error if we couldn't find capabilities, this means: |
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353 # |
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354 # 1. Remote isn't a Mercurial server |
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355 # 2. Remote is a <0.9.1 Mercurial server |
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356 # 3. Remote is a future Mercurial server that dropped ``hello`` |
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357 # and other attempted handshake mechanisms. |
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358 if not caps: |
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359 badresponse() |
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360 |
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361 # Flush any output on stderr before proceeding. |
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362 _forwardoutput(ui, stderr) |
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363 |
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364 return protoname, caps |
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365 |
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366 class sshv1peer(wireprotov1peer.wirepeer): |
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367 def __init__(self, ui, url, proc, stdin, stdout, stderr, caps, |
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368 autoreadstderr=True): |
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369 """Create a peer from an existing SSH connection. |
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370 |
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371 ``proc`` is a handle on the underlying SSH process. |
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372 ``stdin``, ``stdout``, and ``stderr`` are handles on the stdio |
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373 pipes for that process. |
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374 ``caps`` is a set of capabilities supported by the remote. |
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375 ``autoreadstderr`` denotes whether to automatically read from |
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376 stderr and to forward its output. |
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377 """ |
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378 self._url = url |
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379 self.ui = ui |
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380 # self._subprocess is unused. Keeping a handle on the process |
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381 # holds a reference and prevents it from being garbage collected. |
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382 self._subprocess = proc |
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383 |
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384 # And we hook up our "doublepipe" wrapper to allow querying |
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385 # stderr any time we perform I/O. |
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386 if autoreadstderr: |
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387 stdout = doublepipe(ui, util.bufferedinputpipe(stdout), stderr) |
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388 stdin = doublepipe(ui, stdin, stderr) |
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389 |
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390 self._pipeo = stdin |
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391 self._pipei = stdout |
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392 self._pipee = stderr |
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393 self._caps = caps |
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|
394 self._autoreadstderr = autoreadstderr |
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Added ability to clone from a local repository to a (new) remote one.
Sean Meiners <sean.meiners@linspire.com>
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395 |
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396 # Commands that have a "framed" response where the first line of the |
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397 # response contains the length of that response. |
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398 _FRAMED_COMMANDS = { |
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399 'batch', |
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400 } |
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|
401 |
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402 # Begin of ipeerconnection interface. |
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403 |
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|
404 def url(self): |
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405 return self._url |
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|
406 |
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407 def local(self): |
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408 return None |
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|
409 |
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410 def peer(self): |
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411 return self |
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|
412 |
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|
413 def canpush(self): |
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|
414 return True |
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|
415 |
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|
416 def close(self): |
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|
417 pass |
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|
418 |
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|
419 # End of ipeerconnection interface. |
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420 |
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|
421 # Begin of ipeercommands interface. |
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|
422 |
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|
423 def capabilities(self): |
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|
424 return self._caps |
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|
425 |
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|
426 # End of ipeercommands interface. |
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|
427 |
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|
428 def _readerr(self): |
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|
429 _forwardoutput(self.ui, self._pipee) |
624
876333a295ff
Add an sshrepository class and hg serve --stdio
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|
430 |
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|
431 def _abort(self, exception): |
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|
432 self._cleanup() |
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|
433 raise exception |
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|
434 |
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|
435 def _cleanup(self): |
35933
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diff
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|
436 _cleanuppipes(self.ui, self._pipei, self._pipeo, self._pipee) |
624
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Add an sshrepository class and hg serve --stdio
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|
437 |
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|
438 __del__ = _cleanup |
3034
2b0bc36a48d8
sshrepo: flush stderr before connecting to the hg server
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parents:
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diff
changeset
|
439 |
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|
440 def _sendrequest(self, cmd, args, framed=False): |
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|
441 if (self.ui.debugflag |
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|
442 and self.ui.configbool('devel', 'debug.peer-request')): |
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|
443 dbg = self.ui.debug |
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|
444 line = 'devel-peer-request: %s\n' |
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|
445 dbg(line % cmd) |
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|
446 for key, value in sorted(args.items()): |
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|
447 if not isinstance(value, dict): |
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|
448 dbg(line % ' %s: %d bytes' % (key, len(value))) |
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|
449 else: |
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|
450 for dk, dv in sorted(value.items()): |
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|
451 dbg(line % ' %s-%s: %d' % (key, dk, len(dv))) |
9467
4c041f1ee1b4
do not attempt to translate ui.debug output
Martin Geisler <mg@lazybytes.net>
parents:
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diff
changeset
|
452 self.ui.debug("sending %s command\n" % cmd) |
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|
453 self._pipeo.write("%s\n" % cmd) |
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|
454 _func, names = wireprotov1server.commands[cmd] |
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changeset
|
455 keys = names.split() |
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|
456 wireargs = {} |
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diff
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|
457 for k in keys: |
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|
458 if k == '*': |
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diff
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|
459 wireargs['*'] = args |
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diff
changeset
|
460 break |
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|
461 else: |
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|
462 wireargs[k] = args[k] |
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|
463 del args[k] |
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|
464 for k, v in sorted(wireargs.iteritems()): |
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|
465 self._pipeo.write("%s %d\n" % (k, len(v))) |
13721
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|
466 if isinstance(v, dict): |
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|
467 for dk, dv in v.iteritems(): |
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|
468 self._pipeo.write("%s %d\n" % (dk, len(dv))) |
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|
469 self._pipeo.write(dv) |
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|
470 else: |
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|
471 self._pipeo.write(v) |
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|
472 self._pipeo.flush() |
624
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Add an sshrepository class and hg serve --stdio
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|
473 |
36367
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|
474 # We know exactly how many bytes are in the response. So return a proxy |
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|
475 # around the raw output stream that allows reading exactly this many |
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|
476 # bytes. Callers then can read() without fear of overrunning the |
043e77f3be09
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|
477 # response. |
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|
478 if framed: |
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parents:
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|
479 amount = self._getamount() |
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|
480 return util.cappedreader(self._pipei, amount) |
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diff
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|
481 |
33768
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|
482 return self._pipei |
624
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Add an sshrepository class and hg serve --stdio
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parents:
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diff
changeset
|
483 |
36366
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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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|
484 def _callstream(self, cmd, **args): |
a34d5ef53c2e
sshpeer: move logic for sending a request into a new function
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parents:
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|
485 args = pycompat.byteskwargs(args) |
36367
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diff
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486 return self._sendrequest(cmd, args, framed=cmd in self._FRAMED_COMMANDS) |
36366
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parents:
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diff
changeset
|
487 |
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
|
488 def _callcompressable(self, cmd, **args): |
36366
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parents:
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|
489 args = pycompat.byteskwargs(args) |
36367
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|
490 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
|
491 |
11589
e8d22fe2ddab
protocol: clean up call-like functions in http and ssh clients
Matt Mackall <mpm@selenic.com>
parents:
11588
diff
changeset
|
492 def _call(self, cmd, **args): |
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parents:
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|
493 args = pycompat.byteskwargs(args) |
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diff
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|
494 return self._sendrequest(cmd, args, framed=True).read() |
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
5293
diff
changeset
|
495 |
11592
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protocol: unify client unbundle support
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parents:
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diff
changeset
|
496 def _callpush(self, cmd, fp, **args): |
36372
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|
497 # The server responds with an empty frame if the client should |
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|
498 # continue submitting the payload. |
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diff
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|
499 r = self._call(cmd, **args) |
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parents:
11591
diff
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|
500 if r: |
26e0782b8380
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parents:
11591
diff
changeset
|
501 return '', r |
36372
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parents:
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diff
changeset
|
502 |
b8d0761a85c7
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parents:
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diff
changeset
|
503 # 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
|
504 # frame. |
29727
0dbd788a2dfd
sshpeer: use `iter(callable, sentinel)` instead of while True
Augie Fackler <augie@google.com>
parents:
29389
diff
changeset
|
505 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:
36216
diff
changeset
|
506 self._writeframed(d) |
7f8f74531b0b
sshpeer: rename _recv and _send to _readframed and _writeframed
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parents:
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diff
changeset
|
507 self._writeframed("", flush=True) |
36372
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diff
changeset
|
508 |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
509 # In case of success, there is an empty frame and a frame containing |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
510 # the integer result (as a string). |
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wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
511 # In case of error, there is a non-empty frame containing the error. |
36363
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sshpeer: rename _recv and _send to _readframed and _writeframed
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36216
diff
changeset
|
512 r = self._readframed() |
11592
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Matt Mackall <mpm@selenic.com>
parents:
11591
diff
changeset
|
513 if r: |
26e0782b8380
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parents:
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diff
changeset
|
514 return '', r |
36363
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diff
changeset
|
515 return self._readframed(), '' |
11592
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parents:
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diff
changeset
|
516 |
21073
83ce71ef7804
sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
517 def _calltwowaystream(self, cmd, fp, **args): |
36372
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|
518 # The server responds with an empty frame if the client should |
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diff
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|
519 # continue submitting the payload. |
21073
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Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
520 r = self._call(cmd, **args) |
83ce71ef7804
sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
521 if r: |
83ce71ef7804
sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
522 # XXX needs to be made better |
29389
98e8313dcd9e
i18n: translate abort messages
liscju <piotr.listkiewicz@gmail.com>
parents:
28438
diff
changeset
|
523 raise error.Abort(_('unexpected remote reply: %s') % r) |
36372
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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diff
changeset
|
524 |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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parents:
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diff
changeset
|
525 # The payload consists of frames with content followed by an empty |
b8d0761a85c7
wireproto: document the wonky push protocol for SSH
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diff
changeset
|
526 # frame. |
29727
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Augie Fackler <augie@google.com>
parents:
29389
diff
changeset
|
527 for d in iter(lambda: fp.read(4096), ''): |
36363
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
36216
diff
changeset
|
528 self._writeframed(d) |
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parents:
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diff
changeset
|
529 self._writeframed("", flush=True) |
36372
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diff
changeset
|
530 |
33768
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parents:
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diff
changeset
|
531 return self._pipei |
11591
0d9cb3f3b0a1
protocol: unify client changegroup methods
Matt Mackall <mpm@selenic.com>
parents:
11590
diff
changeset
|
532 |
28438
48fd02dac1d4
wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents:
27798
diff
changeset
|
533 def _getamount(self): |
33768
82d564d5ac4f
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parents:
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diff
changeset
|
534 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
|
535 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
|
536 if self._autoreadstderr: |
1151c731686e
sshpeer: don't read from stderr when that behavior is disabled
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parents:
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diff
changeset
|
537 self._readerr() |
25243
d65243d28749
sshpeer: break "OutOfBandError" feature for ssh (BC)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23684
diff
changeset
|
538 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
|
539 self._abort(error.OutOfBandError(hint=msg)) |
36608
1151c731686e
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parents:
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diff
changeset
|
540 if self._autoreadstderr: |
1151c731686e
sshpeer: don't read from stderr when that behavior is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36536
diff
changeset
|
541 self._readerr() |
646
342927da4f4c
Show remote client output with "remote:"
Matt Mackall <mpm@selenic.com>
parents:
644
diff
changeset
|
542 try: |
28438
48fd02dac1d4
wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents:
27798
diff
changeset
|
543 return int(l) |
14004
97ed99d1f419
eliminate various naked except clauses
Idan Kamara <idankk86@gmail.com>
parents:
13827
diff
changeset
|
544 except ValueError: |
11590
0b15aee0a306
protocol: convert some ssh abort calls
Matt Mackall <mpm@selenic.com>
parents:
11589
diff
changeset
|
545 self._abort(error.ResponseError(_("unexpected response:"), l)) |
28438
48fd02dac1d4
wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents:
27798
diff
changeset
|
546 |
36363
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diff
changeset
|
547 def _readframed(self): |
36628
70415568ea65
sshpeer: don't read(0)
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parents:
36608
diff
changeset
|
548 size = self._getamount() |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
549 if not size: |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36608
diff
changeset
|
550 return b'' |
70415568ea65
sshpeer: don't read(0)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36608
diff
changeset
|
551 |
70415568ea65
sshpeer: don't read(0)
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parents:
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diff
changeset
|
552 return self._pipei.read(size) |
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff
changeset
|
553 |
36363
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diff
changeset
|
554 def _writeframed(self, data, flush=False): |
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diff
changeset
|
555 self._pipeo.write("%d\n" % len(data)) |
5978
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff
changeset
|
556 if data: |
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diff
changeset
|
557 self._pipeo.write(data) |
5978
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diff
changeset
|
558 if flush: |
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diff
changeset
|
559 self._pipeo.flush() |
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diff
changeset
|
560 if self._autoreadstderr: |
1151c731686e
sshpeer: don't read from stderr when that behavior is disabled
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parents:
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diff
changeset
|
561 self._readerr() |
2612
ffb895f16925
add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2549
diff
changeset
|
562 |
35978
59e4a7781a36
sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
563 class sshv2peer(sshv1peer): |
59e4a7781a36
sshpeer: implement peer for version 2 of wire protocol
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parents:
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diff
changeset
|
564 """A peer that speakers version 2 of the transport protocol.""" |
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diff
changeset
|
565 # Currently version 2 is identical to version 1 post handshake. |
59e4a7781a36
sshpeer: implement peer for version 2 of wire protocol
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diff
changeset
|
566 # And handshake is performed before the peer is instantiated. So |
59e4a7781a36
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parents:
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diff
changeset
|
567 # we need no custom code. |
59e4a7781a36
sshpeer: implement peer for version 2 of wire protocol
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parents:
35977
diff
changeset
|
568 |
36533
1a36ef7df70a
sshpeer: support not reading and forwarding stderr
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36487
diff
changeset
|
569 def makepeer(ui, path, proc, stdin, stdout, stderr, autoreadstderr=True): |
36487
dabf86721200
sshpeer: factor out code for creating peers from pipes
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
570 """Make a peer instance from existing pipes. |
dabf86721200
sshpeer: factor out code for creating peers from pipes
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parents:
36372
diff
changeset
|
571 |
dabf86721200
sshpeer: factor out code for creating peers from pipes
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parents:
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diff
changeset
|
572 ``path`` and ``proc`` are stored on the eventual peer instance and may |
dabf86721200
sshpeer: factor out code for creating peers from pipes
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parents:
36372
diff
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573 not be used for anything meaningful. |
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574 |
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575 ``stdin``, ``stdout``, and ``stderr`` are the pipes connected to the |
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576 SSH server's stdio handles. |
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577 |
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578 This function is factored out to allow creating peers that don't |
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579 actually spawn a new process. It is useful for starting SSH protocol |
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580 servers and clients via non-standard means, which can be useful for |
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581 testing. |
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582 """ |
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583 try: |
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584 protoname, caps = _performhandshake(ui, stdin, stdout, stderr) |
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585 except Exception: |
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586 _cleanuppipes(ui, stdout, stdin, stderr) |
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587 raise |
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588 |
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589 if protoname == wireprototypes.SSHV1: |
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590 return sshv1peer(ui, path, proc, stdin, stdout, stderr, caps, |
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591 autoreadstderr=autoreadstderr) |
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592 elif protoname == wireprototypes.SSHV2: |
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593 return sshv2peer(ui, path, proc, stdin, stdout, stderr, caps, |
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594 autoreadstderr=autoreadstderr) |
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595 else: |
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596 _cleanuppipes(ui, stdout, stdin, stderr) |
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597 raise error.RepoError(_('unknown version of SSH protocol: %s') % |
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598 protoname) |
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599 |
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600 def instance(ui, path, create, intents=None, createopts=None): |
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601 """Create an SSH peer. |
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602 |
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603 The returned object conforms to the ``wireprotov1peer.wirepeer`` interface. |
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604 """ |
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605 u = util.url(path, parsequery=False, parsefragment=False) |
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606 if u.scheme != 'ssh' or not u.host or u.path is None: |
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607 raise error.RepoError(_("couldn't parse location %s") % path) |
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608 |
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609 util.checksafessh(path) |
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610 |
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611 if u.passwd is not None: |
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612 raise error.RepoError(_('password in URL not supported')) |
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613 |
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614 sshcmd = ui.config('ui', 'ssh') |
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615 remotecmd = ui.config('ui', 'remotecmd') |
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616 sshaddenv = dict(ui.configitems('sshenv')) |
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617 sshenv = procutil.shellenviron(sshaddenv) |
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618 remotepath = u.path or '.' |
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619 |
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620 args = procutil.sshargs(sshcmd, u.host, u.user, u.port) |
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621 |
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622 if create: |
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623 # We /could/ do this, but only if the remote init command knows how to |
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624 # handle them. We don't yet make any assumptions about that. And without |
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625 # querying the remote, there's no way of knowing if the remote even |
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626 # supports said requested feature. |
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627 if createopts: |
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628 raise error.RepoError(_('cannot create remote SSH repositories ' |
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629 'with extra options')) |
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630 |
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631 cmd = '%s %s %s' % (sshcmd, args, |
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632 procutil.shellquote('%s init %s' % |
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633 (_serverquote(remotecmd), _serverquote(remotepath)))) |
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634 ui.debug('running %s\n' % cmd) |
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635 res = ui.system(cmd, blockedtag='sshpeer', environ=sshenv) |
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636 if res != 0: |
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637 raise error.RepoError(_('could not create remote repo')) |
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638 |
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639 proc, stdin, stdout, stderr = _makeconnection(ui, sshcmd, args, remotecmd, |
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640 remotepath, sshenv) |
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641 |
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642 peer = makepeer(ui, path, proc, stdin, stdout, stderr) |
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643 |
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644 # Finally, if supported by the server, notify it about our own |
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645 # capabilities. |
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646 if 'protocaps' in peer.capabilities(): |
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647 try: |
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648 peer._call("protocaps", |
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649 caps=' '.join(sorted(_clientcapabilities()))) |
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650 except IOError: |
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651 peer._cleanup() |
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652 raise error.RepoError(_('capability exchange failed')) |
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653 |
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654 return peer |