Mercurial > public > mercurial-scm > hg

annotate mercurial/wireprotoserver.py @ 36847:ed0456fde625

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hgweb: handle CONTENT_LENGTH PEP 3333 says CONTENT_LENGTH may be set. I /think/ WSGI servers are allowed to invent this key even if the client didn't send it. We had code in wireprotoserver looking for this key. So let's just automagically convert this key to an HTTP request header when parsing the request. Differential Revision: https://phab.mercurial-scm.org/D2744
author Gregory Szorc <gregory.szorc@gmail.com>
date Sat, 10 Mar 2018 10:45:12 -0800
parents 14f70c44af6c
children 16292bbda39c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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2 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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3 #
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4 # This software may be used and distributed according to the terms of the
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5 # GNU General Public License version 2 or any later version.
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6
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7 from __future__ import absolute_import
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8
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9 import contextlib
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10 import struct
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11 import sys
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12 import threading
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13
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14 from .i18n import _
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15 from . import (
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16 encoding,
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17 error,
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18 hook,
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19 pycompat,
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20 util,
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21 wireproto,
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22 wireprototypes,
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23 )
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24
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25 stringio = util.stringio
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26
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27 urlerr = util.urlerr
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28 urlreq = util.urlreq
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29
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30 HTTP_OK = 200
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31
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32 HGTYPE = 'application/mercurial-0.1'
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33 HGTYPE2 = 'application/mercurial-0.2'
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34 HGERRTYPE = 'application/hg-error'
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35
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36 SSHV1 = wireprototypes.SSHV1
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37 SSHV2 = wireprototypes.SSHV2
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38
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39 def decodevaluefromheaders(req, headerprefix):
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40 """Decode a long value from multiple HTTP request headers.
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41
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42 Returns the value as a bytes, not a str.
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43 """
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44 chunks = []
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45 i = 1
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46 while True:
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47 v = req.headers.get(b'%s-%d' % (headerprefix, i))
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48 if v is None:
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49 break
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50 chunks.append(pycompat.bytesurl(v))
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51 i += 1
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52
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53 return ''.join(chunks)
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54
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55 class httpv1protocolhandler(wireprototypes.baseprotocolhandler):
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56 def __init__(self, wsgireq, req, ui, checkperm):
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57 self._wsgireq = wsgireq
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58 self._req = req
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59 self._ui = ui
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60 self._checkperm = checkperm
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61
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62 @property
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63 def name(self):
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64 return 'http-v1'
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65
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66 def getargs(self, args):
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67 knownargs = self._args()
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68 data = {}
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69 keys = args.split()
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70 for k in keys:
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71 if k == '*':
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72 star = {}
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73 for key in knownargs.keys():
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74 if key != 'cmd' and key not in keys:
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75 star[key] = knownargs[key][0]
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76 data['*'] = star
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77 else:
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78 data[k] = knownargs[k][0]
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79 return [data[k] for k in keys]
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80
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81 def _args(self):
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82 args = util.rapply(pycompat.bytesurl, self._wsgireq.form.copy())
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83 postlen = int(self._req.headers.get(b'X-HgArgs-Post', 0))
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84 if postlen:
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85 args.update(urlreq.parseqs(
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86 self._wsgireq.read(postlen), keep_blank_values=True))
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87 return args
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88
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89 argvalue = decodevaluefromheaders(self._req, b'X-HgArg')
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90 args.update(urlreq.parseqs(argvalue, keep_blank_values=True))
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91 return args
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92
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93 def forwardpayload(self, fp):
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94 # Existing clients *always* send Content-Length.
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95 length = int(self._req.headers[b'Content-Length'])
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96
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97 # If httppostargs is used, we need to read Content-Length
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98 # minus the amount that was consumed by args.
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99 length -= int(self._req.headers.get(b'X-HgArgs-Post', 0))
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100 for s in util.filechunkiter(self._wsgireq, limit=length):
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101 fp.write(s)
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102
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103 @contextlib.contextmanager
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104 def mayberedirectstdio(self):
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105 oldout = self._ui.fout
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106 olderr = self._ui.ferr
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107
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108 out = util.stringio()
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109
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110 try:
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111 self._ui.fout = out
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112 self._ui.ferr = out
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113 yield out
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114 finally:
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115 self._ui.fout = oldout
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116 self._ui.ferr = olderr
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117
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118 def client(self):
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119 return 'remote:%s:%s:%s' % (
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120 self._wsgireq.env.get('wsgi.url_scheme') or 'http',
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121 urlreq.quote(self._wsgireq.env.get('REMOTE_HOST', '')),
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122 urlreq.quote(self._wsgireq.env.get('REMOTE_USER', '')))
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123
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124 def addcapabilities(self, repo, caps):
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125 caps.append('httpheader=%d' %
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126 repo.ui.configint('server', 'maxhttpheaderlen'))
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127 if repo.ui.configbool('experimental', 'httppostargs'):
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128 caps.append('httppostargs')
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129
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130 # FUTURE advertise 0.2rx once support is implemented
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131 # FUTURE advertise minrx and mintx after consulting config option
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132 caps.append('httpmediatype=0.1rx,0.1tx,0.2tx')
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133
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134 compengines = wireproto.supportedcompengines(repo.ui, util.SERVERROLE)
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135 if compengines:
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136 comptypes = ','.join(urlreq.quote(e.wireprotosupport().name)
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137 for e in compengines)
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138 caps.append('compression=%s' % comptypes)
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139
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140 return caps
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141
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142 def checkperm(self, perm):
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143 return self._checkperm(perm)
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144
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145 # This method exists mostly so that extensions like remotefilelog can
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146 # disable a kludgey legacy method only over http. As of early 2018,
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147 # there are no other known users, so with any luck we can discard this
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148 # hook if remotefilelog becomes a first-party extension.
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149 def iscmd(cmd):
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150 return cmd in wireproto.commands
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151
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152 def handlewsgirequest(rctx, wsgireq, req, checkperm):
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153 """Possibly process a wire protocol request.
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154
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155 If the current request is a wire protocol request, the request is
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156 processed by this function.
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157
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158 ``wsgireq`` is a ``wsgirequest`` instance.
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159 ``req`` is a ``parsedrequest`` instance.
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160
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161 Returns a 2-tuple of (bool, response) where the 1st element indicates
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162 whether the request was handled and the 2nd element is a return
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163 value for a WSGI application (often a generator of bytes).
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164 """
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165 # Avoid cycle involving hg module.
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166 from .hgweb import common as hgwebcommon
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167
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168 repo = rctx.repo
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169
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170 # HTTP version 1 wire protocol requests are denoted by a "cmd" query
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171 # string parameter. If it isn't present, this isn't a wire protocol
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172 # request.
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173 if 'cmd' not in req.querystringdict:
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174 return False, None
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175
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176 cmd = req.querystringdict['cmd'][0]
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177
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178 # The "cmd" request parameter is used by both the wire protocol and hgweb.
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179 # While not all wire protocol commands are available for all transports,
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180 # if we see a "cmd" value that resembles a known wire protocol command, we
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181 # route it to a protocol handler. This is better than routing possible
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182 # wire protocol requests to hgweb because it prevents hgweb from using
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183 # known wire protocol commands and it is less confusing for machine
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184 # clients.
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185 if not iscmd(cmd):
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186 return False, None
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187
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188 # The "cmd" query string argument is only valid on the root path of the
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189 # repo. e.g. ``/?cmd=foo``, ``/repo?cmd=foo``. URL paths within the repo
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190 # like ``/blah?cmd=foo`` are not allowed. So don't recognize the request
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191 # in this case. We send an HTTP 404 for backwards compatibility reasons.
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192 if req.dispatchpath:
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193 res = _handlehttperror(
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194 hgwebcommon.ErrorResponse(hgwebcommon.HTTP_NOT_FOUND), wsgireq,
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195 req, cmd)
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196
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197 return True, res
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198
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199 proto = httpv1protocolhandler(wsgireq, req, repo.ui,
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200 lambda perm: checkperm(rctx, wsgireq, perm))
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201
36812
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202 # The permissions checker should be the only thing that can raise an
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203 # ErrorResponse. It is kind of a layer violation to catch an hgweb
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204 # exception here. So consider refactoring into a exception type that
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205 # is associated with the wire protocol.
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206 try:
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207 res = _callhttp(repo, wsgireq, req, proto, cmd)
36812
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208 except hgwebcommon.ErrorResponse as e:
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209 res = _handlehttperror(e, wsgireq, req, cmd)
36812
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210
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211 return True, res
35984
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212
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213 def _httpresponsetype(ui, req, prefer_uncompressed):
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214 """Determine the appropriate response type and compression settings.
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215
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216 Returns a tuple of (mediatype, compengine, engineopts).
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217 """
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218 # Determine the response media type and compression engine based
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219 # on the request parameters.
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220 protocaps = decodevaluefromheaders(req, 'X-HgProto').split(' ')
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221
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222 if '0.2' in protocaps:
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223 # All clients are expected to support uncompressed data.
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224 if prefer_uncompressed:
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225 return HGTYPE2, util._noopengine(), {}
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diff changeset
226
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227 # Default as defined by wire protocol spec.
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228 compformats = ['zlib', 'none']
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229 for cap in protocaps:
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230 if cap.startswith('comp='):
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231 compformats = cap[5:].split(',')
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diff changeset
232 break
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233
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234 # Now find an agreed upon compression format.
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235 for engine in wireproto.supportedcompengines(ui, util.SERVERROLE):
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236 if engine.wireprotosupport().name in compformats:
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237 opts = {}
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238 level = ui.configint('server', '%slevel' % engine.name())
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239 if level is not None:
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240 opts['level'] = level
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241
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242 return HGTYPE2, engine, opts
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243
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244 # No mutually supported compression format. Fall back to the
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245 # legacy protocol.
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246
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247 # Don't allow untrusted settings because disabling compression or
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248 # setting a very high compression level could lead to flooding
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249 # the server's network or CPU.
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250 opts = {'level': ui.configint('server', 'zliblevel')}
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251 return HGTYPE, util.compengines['zlib'], opts
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252
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253 def _callhttp(repo, wsgireq, req, proto, cmd):
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Joerg Sonnenberger <joerg@bec.de>
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diff changeset
254 def genversion2(gen, engine, engineopts):
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255 # application/mercurial-0.2 always sends a payload header
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256 # identifying the compression engine.
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parents: 30759
diff changeset
257 name = engine.wireprotosupport().name
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
258 assert 0 < len(name) < 256
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
259 yield struct.pack('B', len(name))
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
260 yield name
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
261
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
262 for chunk in gen:
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
263 yield chunk
30764
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
264
35982
5a56bf4180ad wireproto: function for testing if wire protocol command is available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35976
diff changeset
265 if not wireproto.commands.commandavailable(cmd, proto):
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
266 wsgireq.respond(HTTP_OK, HGERRTYPE,
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
267 body=_('requested wire protocol command is not '
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
268 'available over HTTP'))
35982
5a56bf4180ad wireproto: function for testing if wire protocol command is available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35976
diff changeset
269 return []
5a56bf4180ad wireproto: function for testing if wire protocol command is available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35976
diff changeset
270
36801
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36800
diff changeset
271 proto.checkperm(wireproto.commands[cmd].permission)
36799
c638a13093cf wireprotoserver: check permissions in main dispatch function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36798
diff changeset
272
36798
7574c8173d5e wireprotoserver: check if command available before calling it
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36760
diff changeset
273 rsp = wireproto.dispatch(repo, proto, cmd)
7574c8173d5e wireprotoserver: check if command available before calling it
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36760
diff changeset
274
34510
c23fa3103925 hgweb: in protocol adapter, look for bytes instances, not str
Augie Fackler <augie@google.com>
parents: 34509
diff changeset
275 if isinstance(rsp, bytes):
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
276 wsgireq.respond(HTTP_OK, HGTYPE, body=rsp)
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
277 return []
36074
2f7290555c96 wireproto: introduce type for raw byte responses (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36073
diff changeset
278 elif isinstance(rsp, wireprototypes.bytesresponse):
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
279 wsgireq.respond(HTTP_OK, HGTYPE, body=rsp.data)
36074
2f7290555c96 wireproto: introduce type for raw byte responses (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36073
diff changeset
280 return []
36073
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36072
diff changeset
281 elif isinstance(rsp, wireprototypes.streamreslegacy):
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
282 gen = rsp.gen
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
283 wsgireq.respond(HTTP_OK, HGTYPE)
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
284 return gen
36073
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36072
diff changeset
285 elif isinstance(rsp, wireprototypes.streamres):
35705
8cdb671dbd0b wireproto: drop support for reader interface from streamres (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34744
diff changeset
286 gen = rsp.gen
30466
2add671bf55b wireproto: perform chunking and compression at protocol layer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30366
diff changeset
287
30764
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
288 # This code for compression should not be streamres specific. It
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
289 # is here because we only compress streamres at the moment.
36072
341c886e411e wireprotoserver: move responsetype() out of http handler
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36071
diff changeset
290 mediatype, engine, engineopts = _httpresponsetype(
36846
14f70c44af6c wireprotoserver: access headers through parsed request
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36813
diff changeset
291 repo.ui, req, rsp.prefer_uncompressed)
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
292 gen = engine.compressstream(gen, engineopts)
30466
2add671bf55b wireproto: perform chunking and compression at protocol layer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30366
diff changeset
293
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
294 if mediatype == HGTYPE2:
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
295 gen = genversion2(gen, engine, engineopts)
30764
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
296
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
297 wsgireq.respond(HTTP_OK, mediatype)
30466
2add671bf55b wireproto: perform chunking and compression at protocol layer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30366
diff changeset
298 return gen
36073
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36072
diff changeset
299 elif isinstance(rsp, wireprototypes.pushres):
36067
caca3ac2ac04 wireproto: use maybecapturestdio() for push responses (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36066
diff changeset
300 rsp = '%d\n%s' % (rsp.res, rsp.output)
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
301 wsgireq.respond(HTTP_OK, HGTYPE, body=rsp)
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
302 return []
36073
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36072
diff changeset
303 elif isinstance(rsp, wireprototypes.pusherr):
35987
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
304 # This is the httplib workaround documented in _handlehttperror().
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
305 wsgireq.drain()
35987
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
306
12703
40bb5853fc4b wireproto: introduce pusherr() to deal with "unsynced changes" error
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 11626
diff changeset
307 rsp = '0\n%s\n' % rsp.res
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
308 wsgireq.respond(HTTP_OK, HGTYPE, body=rsp)
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
309 return []
36073
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36072
diff changeset
310 elif isinstance(rsp, wireprototypes.ooberror):
15017
f4522df38c65 wireproto: add out-of-band error class to allow remote repo to report errors
Andrew Pritchard <andrewp@fogcreek.com>
parents: 14614
diff changeset
311 rsp = rsp.message
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
312 wsgireq.respond(HTTP_OK, HGERRTYPE, body=rsp)
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
313 return []
34509
e21f274cccea hgweb: in protocol adapter, avoid control reaching end of non-void function
Augie Fackler <augie@google.com>
parents: 33821
diff changeset
314 raise error.ProgrammingError('hgweb.protocol internal failure', rsp)
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
315
36846
14f70c44af6c wireprotoserver: access headers through parsed request
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36813
diff changeset
316 def _handlehttperror(e, wsgireq, req, cmd):
35986
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35984
diff changeset
317 """Called when an ErrorResponse is raised during HTTP request processing."""
35987
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
318
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
319 # Clients using Python's httplib are stateful: the HTTP client
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
320 # won't process an HTTP response until all request data is
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
321 # sent to the server. The intent of this code is to ensure
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
322 # we always read HTTP request data from the client, thus
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
323 # ensuring httplib transitions to a state that allows it to read
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
324 # the HTTP response. In other words, it helps prevent deadlocks
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
325 # on clients using httplib.
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
326
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
327 if (wsgireq.env[r'REQUEST_METHOD'] == r'POST' and
35987
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
328 # But not if Expect: 100-continue is being used.
36846
14f70c44af6c wireprotoserver: access headers through parsed request
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36813
diff changeset
329 (req.headers.get('Expect', '').lower() != '100-continue')):
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
330 wsgireq.drain()
35986
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35984
diff changeset
331 else:
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
332 wsgireq.headers.append((r'Connection', r'Close'))
35986
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35984
diff changeset
333
35987
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
334 # TODO This response body assumes the failed command was
6010fe1da619 wireprotoserver: document and improve the httplib workaround
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35986
diff changeset
335 # "unbundle." That assumption is not always valid.
36804
b9b968e21f78 hgweb: rename req to wsgireq
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36801
diff changeset
336 wsgireq.respond(e, HGTYPE, body='0\n%s\n' % pycompat.bytestr(e))
35986
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35984
diff changeset
337
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35984
diff changeset
338 return ''
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35984
diff changeset
339
36064
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
340 def _sshv1respondbytes(fout, value):
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
341 """Send a bytes response for protocol version 1."""
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
342 fout.write('%d\n' % len(value))
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
343 fout.write(value)
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
344 fout.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
345
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
346 def _sshv1respondstream(fout, source):
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
347 write = fout.write
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
348 for chunk in source.gen:
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
349 write(chunk)
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
350 fout.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
351
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
352 def _sshv1respondooberror(fout, ferr, rsp):
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
353 ferr.write(b'%s\n-\n' % rsp)
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
354 ferr.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
355 fout.write(b'\n')
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
356 fout.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35988
diff changeset
357
36371
0c231df1ffdc wireprototypes: move baseprotocolhandler from wireprotoserver
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36280
diff changeset
358 class sshv1protocolhandler(wireprototypes.baseprotocolhandler):
36065
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
359 """Handler for requests services via version 1 of SSH protocol."""
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
360 def __init__(self, ui, fin, fout):
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
361 self._ui = ui
36065
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
362 self._fin = fin
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
363 self._fout = fout
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
364
35873
29759c46aa1a wireprotoserver: make name part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35872
diff changeset
365 @property
29759c46aa1a wireprotoserver: make name part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35872
diff changeset
366 def name(self):
36536
3cd245945ef3 wireprotoserver: move SSHV1 and SSHV2 constants to wireprototypes
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36526
diff changeset
367 return wireprototypes.SSHV1
35873
29759c46aa1a wireprotoserver: make name part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35872
diff changeset
368
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
369 def getargs(self, args):
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
370 data = {}
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
371 keys = args.split()
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
372 for n in xrange(len(keys)):
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
373 argline = self._fin.readline()[:-1]
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
374 arg, l = argline.split()
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
375 if arg not in keys:
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
376 raise error.Abort(_("unexpected parameter %r") % arg)
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
377 if arg == '*':
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
378 star = {}
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
379 for k in xrange(int(l)):
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
380 argline = self._fin.readline()[:-1]
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
381 arg, l = argline.split()
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
382 val = self._fin.read(int(l))
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
383 star[arg] = val
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
384 data['*'] = star
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
385 else:
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
386 val = self._fin.read(int(l))
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
387 data[arg] = val
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
388 return [data[k] for k in keys]
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
389
36070
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36069
diff changeset
390 def forwardpayload(self, fpout):
36372
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36371
diff changeset
391 # We initially send an empty response. This tells the client it is
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36371
diff changeset
392 # OK to start sending data. If a client sees any other response, it
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36371
diff changeset
393 # interprets it as an error.
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36371
diff changeset
394 _sshv1respondbytes(self._fout, b'')
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36371
diff changeset
395
36070
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36069
diff changeset
396 # The file is in the form:
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36069
diff changeset
397 #
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36069
diff changeset
398 # <chunk size>\n<chunk>
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36069
diff changeset
399 # ...
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36069
diff changeset
400 # 0\n
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
401 count = int(self._fin.readline())
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
402 while count:
35870
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
403 fpout.write(self._fin.read(count))
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35869
diff changeset
404 count = int(self._fin.readline())
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
405
36066
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36065
diff changeset
406 @contextlib.contextmanager
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36065
diff changeset
407 def mayberedirectstdio(self):
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36065
diff changeset
408 yield None
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36065
diff changeset
409
36069
957e773614d0 wireprotoserver: rename _client to client (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36068
diff changeset
410 def client(self):
36065
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
411 client = encoding.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
412 return 'remote:ssh:' + client
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
413
36613
6e585bca962e wireproto: add transport specific capabilities in the transport
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36610
diff changeset
414 def addcapabilities(self, repo, caps):
6e585bca962e wireproto: add transport specific capabilities in the transport
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36610
diff changeset
415 return caps
6e585bca962e wireproto: add transport specific capabilities in the transport
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36610
diff changeset
416
36801
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36800
diff changeset
417 def checkperm(self, perm):
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36800
diff changeset
418 pass
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36800
diff changeset
419
36215
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
420 class sshv2protocolhandler(sshv1protocolhandler):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
421 """Protocol handler for version 2 of the SSH protocol."""
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
422
36610
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36536
diff changeset
423 @property
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36536
diff changeset
424 def name(self):
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36536
diff changeset
425 return wireprototypes.SSHV2
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36536
diff changeset
426
36523
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
427 def _runsshserver(ui, repo, fin, fout, ev):
36215
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
428 # This function operates like a state machine of sorts. The following
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
429 # states are defined:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
430 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
431 # protov1-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
432 # Server is in protocol version 1 serving mode. Commands arrive on
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
433 # new lines. These commands are processed in this state, one command
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
434 # after the other.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
435 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
436 # protov2-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
437 # Server is in protocol version 2 serving mode.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
438 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
439 # upgrade-initial
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
440 # The server is going to process an upgrade request.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
441 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
442 # upgrade-v2-filter-legacy-handshake
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
443 # The protocol is being upgraded to version 2. The server is expecting
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
444 # the legacy handshake from version 1.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
445 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
446 # upgrade-v2-finish
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
447 # The upgrade to version 2 of the protocol is imminent.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
448 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
449 # shutdown
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
450 # The server is shutting down, possibly in reaction to a client event.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
451 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
452 # And here are their transitions:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
453 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
454 # protov1-serving -> shutdown
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
455 # When server receives an empty request or encounters another
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
456 # error.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
457 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
458 # protov1-serving -> upgrade-initial
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
459 # An upgrade request line was seen.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
460 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
461 # upgrade-initial -> upgrade-v2-filter-legacy-handshake
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
462 # Upgrade to version 2 in progress. Server is expecting to
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
463 # process a legacy handshake.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
464 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
465 # upgrade-v2-filter-legacy-handshake -> shutdown
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
466 # Client did not fulfill upgrade handshake requirements.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
467 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
468 # upgrade-v2-filter-legacy-handshake -> upgrade-v2-finish
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
469 # Client fulfilled version 2 upgrade requirements. Finishing that
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
470 # upgrade.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
471 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
472 # upgrade-v2-finish -> protov2-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
473 # Protocol upgrade to version 2 complete. Server can now speak protocol
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
474 # version 2.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
475 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
476 # protov2-serving -> protov1-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
477 # Ths happens by default since protocol version 2 is the same as
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
478 # version 1 except for the handshake.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
479
36214
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
480 state = 'protov1-serving'
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
481 proto = sshv1protocolhandler(ui, fin, fout)
36215
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
482 protoswitched = False
36214
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
483
36523
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
484 while not ev.is_set():
36214
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
485 if state == 'protov1-serving':
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
486 # Commands are issued on new lines.
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
487 request = fin.readline()[:-1]
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
488
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
489 # Empty lines signal to terminate the connection.
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
490 if not request:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
491 state = 'shutdown'
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
492 continue
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
493
36215
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
494 # It looks like a protocol upgrade request. Transition state to
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
495 # handle it.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
496 if request.startswith(b'upgrade '):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
497 if protoswitched:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
498 _sshv1respondooberror(fout, ui.ferr,
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
499 b'cannot upgrade protocols multiple '
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
500 b'times')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
501 state = 'shutdown'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
502 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
503
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
504 state = 'upgrade-initial'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
505 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
506
36214
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
507 available = wireproto.commands.commandavailable(request, proto)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
508
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
509 # This command isn't available. Send an empty response and go
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
510 # back to waiting for a new command.
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
511 if not available:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
512 _sshv1respondbytes(fout, b'')
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
513 continue
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
514
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
515 rsp = wireproto.dispatch(repo, proto, request)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
516
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
517 if isinstance(rsp, bytes):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
518 _sshv1respondbytes(fout, rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
519 elif isinstance(rsp, wireprototypes.bytesresponse):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
520 _sshv1respondbytes(fout, rsp.data)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
521 elif isinstance(rsp, wireprototypes.streamres):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
522 _sshv1respondstream(fout, rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
523 elif isinstance(rsp, wireprototypes.streamreslegacy):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
524 _sshv1respondstream(fout, rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
525 elif isinstance(rsp, wireprototypes.pushres):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
526 _sshv1respondbytes(fout, b'')
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
527 _sshv1respondbytes(fout, b'%d' % rsp.res)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
528 elif isinstance(rsp, wireprototypes.pusherr):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
529 _sshv1respondbytes(fout, rsp.res)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
530 elif isinstance(rsp, wireprototypes.ooberror):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
531 _sshv1respondooberror(fout, ui.ferr, rsp.message)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
532 else:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
533 raise error.ProgrammingError('unhandled response type from '
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
534 'wire protocol command: %s' % rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
535
36215
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
536 # For now, protocol version 2 serving just goes back to version 1.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
537 elif state == 'protov2-serving':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
538 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
539 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
540
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
541 elif state == 'upgrade-initial':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
542 # We should never transition into this state if we've switched
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
543 # protocols.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
544 assert not protoswitched
36536
3cd245945ef3 wireprotoserver: move SSHV1 and SSHV2 constants to wireprototypes
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36526
diff changeset
545 assert proto.name == wireprototypes.SSHV1
36215
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
546
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
547 # Expected: upgrade <token> <capabilities>
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
548 # If we get something else, the request is malformed. It could be
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
549 # from a future client that has altered the upgrade line content.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
550 # We treat this as an unknown command.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
551 try:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
552 token, caps = request.split(b' ')[1:]
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
553 except ValueError:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
554 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
555 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
556 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
557
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
558 # Send empty response if we don't support upgrading protocols.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
559 if not ui.configbool('experimental', 'sshserver.support-v2'):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
560 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
561 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
562 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
563
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
564 try:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
565 caps = urlreq.parseqs(caps)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
566 except ValueError:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
567 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
568 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
569 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
570
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
571 # We don't see an upgrade request to protocol version 2. Ignore
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
572 # the upgrade request.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
573 wantedprotos = caps.get(b'proto', [b''])[0]
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
574 if SSHV2 not in wantedprotos:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
575 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
576 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
577 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
578
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
579 # It looks like we can honor this upgrade request to protocol 2.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
580 # Filter the rest of the handshake protocol request lines.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
581 state = 'upgrade-v2-filter-legacy-handshake'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
582 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
583
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
584 elif state == 'upgrade-v2-filter-legacy-handshake':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
585 # Client should have sent legacy handshake after an ``upgrade``
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
586 # request. Expected lines:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
587 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
588 # hello
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
589 # between
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
590 # pairs 81
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
591 # 0000...-0000...
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
592
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
593 ok = True
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
594 for line in (b'hello', b'between', b'pairs 81'):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
595 request = fin.readline()[:-1]
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
596
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
597 if request != line:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
598 _sshv1respondooberror(fout, ui.ferr,
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
599 b'malformed handshake protocol: '
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
600 b'missing %s' % line)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
601 ok = False
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
602 state = 'shutdown'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
603 break
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
604
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
605 if not ok:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
606 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
607
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
608 request = fin.read(81)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
609 if request != b'%s-%s' % (b'0' * 40, b'0' * 40):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
610 _sshv1respondooberror(fout, ui.ferr,
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
611 b'malformed handshake protocol: '
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
612 b'missing between argument value')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
613 state = 'shutdown'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
614 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
615
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
616 state = 'upgrade-v2-finish'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
617 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
618
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
619 elif state == 'upgrade-v2-finish':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
620 # Send the upgrade response.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
621 fout.write(b'upgraded %s %s\n' % (token, SSHV2))
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
622 servercaps = wireproto.capabilities(repo, proto)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
623 rsp = b'capabilities: %s' % servercaps.data
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
624 fout.write(b'%d\n%s\n' % (len(rsp), rsp))
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
625 fout.flush()
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
626
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
627 proto = sshv2protocolhandler(ui, fin, fout)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
628 protoswitched = True
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
629
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
630 state = 'protov2-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
631 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36214
diff changeset
632
36214
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
633 elif state == 'shutdown':
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
634 break
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
635
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
636 else:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
637 raise error.ProgrammingError('unhandled ssh server state: %s' %
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
638 state)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36213
diff changeset
639
36065
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
640 class sshserver(object):
36526
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
641 def __init__(self, ui, repo, logfh=None):
36065
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
642 self._ui = ui
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
643 self._repo = repo
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
644 self._fin = ui.fin
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
645 self._fout = ui.fout
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
646
36526
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
647 # Log write I/O to stdout and stderr if configured.
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
648 if logfh:
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
649 self._fout = util.makeloggingfileobject(
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
650 logfh, self._fout, 'o', logdata=True)
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
651 ui.ferr = util.makeloggingfileobject(
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
652 logfh, ui.ferr, 'e', logdata=True)
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36523
diff changeset
653
36065
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
654 hook.redirect(True)
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
655 ui.fout = repo.ui.fout = ui.ferr
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
656
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
657 # Prevent insertion/deletion of CRs
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
658 util.setbinary(self._fin)
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
659 util.setbinary(self._fout)
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36064
diff changeset
660
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
661 def serve_forever(self):
36523
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
662 self.serveuntil(threading.Event())
35859
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35858
diff changeset
663 sys.exit(0)
36523
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
664
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
665 def serveuntil(self, ev):
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
666 """Serve until a threading.Event is set."""
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36372
diff changeset
667 _runsshserver(self._ui, self._repo, self._fin, self._fout, ev)