annotate mercurial/wireprotoserver.py @ 36867:a88d68dc3ee8

hgweb: create dedicated type for WSGI responses We have refactored the request side of WSGI processing into a dedicated type. Now let's do the same thing for the response side. We invent a ``wsgiresponse`` type. It takes an instance of a request (for consulation) and the WSGI application's "start_response" handler. The type basically allows setting the HTTP status line, response headers, and the response body. The WSGI application calls sendresponse() to start sending output. Output is emitted as a generator to be fed through the WSGI application. According to PEP 3333, this is the preferred way for output to be transmitted. (Our legacy ``wsgirequest`` exposed a write() to send data. We do not wish to support this API because it isn't recommended by PEP 3333.) The wire protocol code has been ported to use the new API. Differential Revision: https://phab.mercurial-scm.org/D2775
author Gregory Szorc <gregory.szorc@gmail.com>
date Sat, 10 Mar 2018 11:23:05 -0800
parents da4e2f87167d
children ec0af9c59270
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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._req.bodyfh.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._req.bodyfh, 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, res, 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 ``res`` is a ``wsgiresponse`` instance.
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161
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162 Returns a bool indicating if the request was serviced. If set, the caller
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163 should stop processing the request, as a response has already been issued.
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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
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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
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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.status = hgwebcommon.statusmessage(404)
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194 res.headers['Content-Type'] = HGTYPE
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195 # TODO This is not a good response to issue for this request. This
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196 # is mostly for BC for now.
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197 res.setbodybytes('0\n%s\n' % b'Not Found')
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198 return True
36023
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199
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diff changeset
200 proto = httpv1protocolhandler(wsgireq, req, repo.ui,
36812
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diff changeset
201 lambda perm: checkperm(rctx, wsgireq, perm))
30764
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parents: 30759
diff changeset
202
36820
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203 # The permissions checker should be the only thing that can raise an
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204 # ErrorResponse. It is kind of a layer violation to catch an hgweb
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205 # exception here. So consider refactoring into a exception type that
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206 # is associated with the wire protocol.
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diff changeset
207 try:
36867
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diff changeset
208 _callhttp(repo, wsgireq, req, res, proto, cmd)
36820
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diff changeset
209 except hgwebcommon.ErrorResponse as e:
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
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diff changeset
210 for k, v in e.headers:
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
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diff changeset
211 res.headers[k] = v
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
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diff changeset
212 res.status = hgwebcommon.statusmessage(e.code, pycompat.bytestr(e))
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
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diff changeset
213 # TODO This response body assumes the failed command was
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diff changeset
214 # "unbundle." That assumption is not always valid.
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diff changeset
215 res.setbodybytes('0\n%s\n' % pycompat.bytestr(e))
36820
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diff changeset
216
36867
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217 return True
36023
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218
36852
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219 def _httpresponsetype(ui, req, prefer_uncompressed):
36110
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220 """Determine the appropriate response type and compression settings.
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221
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222 Returns a tuple of (mediatype, compengine, engineopts).
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223 """
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224 # Determine the response media type and compression engine based
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225 # on the request parameters.
36852
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diff changeset
226 protocaps = decodevaluefromheaders(req, 'X-HgProto').split(' ')
36110
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diff changeset
227
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diff changeset
228 if '0.2' in protocaps:
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229 # All clients are expected to support uncompressed data.
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diff changeset
230 if prefer_uncompressed:
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diff changeset
231 return HGTYPE2, util._noopengine(), {}
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diff changeset
232
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233 # Default as defined by wire protocol spec.
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234 compformats = ['zlib', 'none']
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diff changeset
235 for cap in protocaps:
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diff changeset
236 if cap.startswith('comp='):
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diff changeset
237 compformats = cap[5:].split(',')
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diff changeset
238 break
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diff changeset
239
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240 # Now find an agreed upon compression format.
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diff changeset
241 for engine in wireproto.supportedcompengines(ui, util.SERVERROLE):
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diff changeset
242 if engine.wireprotosupport().name in compformats:
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diff changeset
243 opts = {}
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244 level = ui.configint('server', '%slevel' % engine.name())
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diff changeset
245 if level is not None:
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246 opts['level'] = level
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247
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248 return HGTYPE2, engine, opts
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249
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250 # No mutually supported compression format. Fall back to the
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251 # legacy protocol.
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252
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253 # Don't allow untrusted settings because disabling compression or
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254 # setting a very high compression level could lead to flooding
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255 # the server's network or CPU.
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parents: 36109
diff changeset
256 opts = {'level': ui.configint('server', 'zliblevel')}
341c886e411e wireprotoserver: move responsetype() out of http handler
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36109
diff changeset
257 return HGTYPE, util.compengines['zlib'], opts
341c886e411e wireprotoserver: move responsetype() out of http handler
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36109
diff changeset
258
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
259 def _callhttp(repo, wsgireq, req, res, proto, cmd):
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
260 # Avoid cycle involving hg module.
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
261 from .hgweb import common as hgwebcommon
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
262
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
263 def 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
264 # application/mercurial-0.2 always sends a payload header
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
265 # identifying the compression engine.
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
266 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
267 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
268 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
269 yield name
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
270
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
271 for chunk in gen:
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
272 yield chunk
30764
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
273
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
274 def setresponse(code, contenttype, bodybytes=None, bodygen=None):
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
275 if code == HTTP_OK:
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
276 res.status = '200 Script output follows'
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
277 else:
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
278 res.status = hgwebcommon.statusmessage(code)
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
279
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
280 res.headers['Content-Type'] = contenttype
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
281
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
282 if bodybytes is not None:
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
283 res.setbodybytes(bodybytes)
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
284 if bodygen is not None:
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
285 res.setbodygen(bodygen)
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
286
36021
5a56bf4180ad wireproto: function for testing if wire protocol command is available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36015
diff changeset
287 if not wireproto.commands.commandavailable(cmd, proto):
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
288 setresponse(HTTP_OK, HGERRTYPE,
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
289 _('requested wire protocol command is not available over '
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
290 'HTTP'))
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
291 return
36021
5a56bf4180ad wireproto: function for testing if wire protocol command is available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36015
diff changeset
292
36809
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36808
diff changeset
293 proto.checkperm(wireproto.commands[cmd].permission)
36807
c638a13093cf wireprotoserver: check permissions in main dispatch function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36806
diff changeset
294
36806
7574c8173d5e wireprotoserver: check if command available before calling it
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36768
diff changeset
295 rsp = wireproto.dispatch(repo, proto, cmd)
7574c8173d5e wireprotoserver: check if command available before calling it
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36768
diff changeset
296
34510
c23fa3103925 hgweb: in protocol adapter, look for bytes instances, not str
Augie Fackler <augie@google.com>
parents: 34509
diff changeset
297 if isinstance(rsp, bytes):
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
298 setresponse(HTTP_OK, HGTYPE, bodybytes=rsp)
36112
2f7290555c96 wireproto: introduce type for raw byte responses (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36111
diff changeset
299 elif isinstance(rsp, wireprototypes.bytesresponse):
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
300 setresponse(HTTP_OK, HGTYPE, bodybytes=rsp.data)
36111
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36110
diff changeset
301 elif isinstance(rsp, wireprototypes.streamreslegacy):
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
302 setresponse(HTTP_OK, HGTYPE, bodygen=rsp.gen)
36111
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36110
diff changeset
303 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
304 gen = rsp.gen
30475
2add671bf55b wireproto: perform chunking and compression at protocol layer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30376
diff changeset
305
30764
e75463e3179f protocol: send application/mercurial-0.2 responses to capable clients
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
diff changeset
306 # 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
307 # is here because we only compress streamres at the moment.
36110
341c886e411e wireprotoserver: move responsetype() out of http handler
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36109
diff changeset
308 mediatype, engine, engineopts = _httpresponsetype(
36852
14f70c44af6c wireprotoserver: access headers through parsed request
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36821
diff changeset
309 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
310 gen = engine.compressstream(gen, engineopts)
30475
2add671bf55b wireproto: perform chunking and compression at protocol layer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30376
diff changeset
311
35750
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
312 if mediatype == HGTYPE2:
a39a9df7ecca wireproto: split streamres into legacy and modern case
Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
313 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
314
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
315 setresponse(HTTP_OK, mediatype, bodygen=gen)
36111
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36110
diff changeset
316 elif isinstance(rsp, wireprototypes.pushres):
36105
caca3ac2ac04 wireproto: use maybecapturestdio() for push responses (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36104
diff changeset
317 rsp = '%d\n%s' % (rsp.res, rsp.output)
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
318 setresponse(HTTP_OK, HGTYPE, bodybytes=rsp)
36111
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36110
diff changeset
319 elif isinstance(rsp, wireprototypes.pusherr):
12703
40bb5853fc4b wireproto: introduce pusherr() to deal with "unsynced changes" error
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 11626
diff changeset
320 rsp = '0\n%s\n' % rsp.res
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
321 res.drain = True
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
322 setresponse(HTTP_OK, HGTYPE, bodybytes=rsp)
36111
cd6ab329c5c7 wireprototypes: move wire protocol response types to new module
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36110
diff changeset
323 elif isinstance(rsp, wireprototypes.ooberror):
36867
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
324 setresponse(HTTP_OK, HGERRTYPE, bodybytes=rsp.message)
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
325 else:
a88d68dc3ee8 hgweb: create dedicated type for WSGI responses
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36863
diff changeset
326 raise error.ProgrammingError('hgweb.protocol internal failure', rsp)
36025
98a00aa0288d wireprotoserver: move error response handling out of hgweb
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36023
diff changeset
327
36102
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
328 def _sshv1respondbytes(fout, value):
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
329 """Send a bytes response for protocol version 1."""
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
330 fout.write('%d\n' % len(value))
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
331 fout.write(value)
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
332 fout.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
333
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
334 def _sshv1respondstream(fout, source):
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
335 write = fout.write
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
336 for chunk in source.gen:
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
337 write(chunk)
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
338 fout.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
339
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
340 def _sshv1respondooberror(fout, ferr, rsp):
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
341 ferr.write(b'%s\n-\n' % rsp)
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
342 ferr.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
343 fout.write(b'\n')
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
344 fout.flush()
5767664d39a5 wireprotoserver: extract SSH response handling functions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36027
diff changeset
345
36402
0c231df1ffdc wireprototypes: move baseprotocolhandler from wireprotoserver
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36313
diff changeset
346 class sshv1protocolhandler(wireprototypes.baseprotocolhandler):
36103
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
347 """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: 36102
diff changeset
348 def __init__(self, ui, fin, fout):
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
349 self._ui = ui
36103
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
350 self._fin = fin
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
351 self._fout = fout
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
352
35913
29759c46aa1a wireprotoserver: make name part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35912
diff changeset
353 @property
29759c46aa1a wireprotoserver: make name part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35912
diff changeset
354 def name(self):
36565
3cd245945ef3 wireprotoserver: move SSHV1 and SSHV2 constants to wireprototypes
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36555
diff changeset
355 return wireprototypes.SSHV1
35913
29759c46aa1a wireprotoserver: make name part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35912
diff changeset
356
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
357 def getargs(self, args):
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
358 data = {}
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
359 keys = args.split()
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
360 for n in xrange(len(keys)):
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
361 argline = self._fin.readline()[:-1]
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
362 arg, l = argline.split()
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
363 if arg not in keys:
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
364 raise error.Abort(_("unexpected parameter %r") % arg)
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
365 if arg == '*':
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
366 star = {}
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
367 for k in xrange(int(l)):
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
368 argline = self._fin.readline()[:-1]
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
369 arg, l = argline.split()
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
370 val = self._fin.read(int(l))
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
371 star[arg] = val
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
372 data['*'] = star
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
373 else:
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
374 val = self._fin.read(int(l))
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
375 data[arg] = val
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
376 return [data[k] for k in keys]
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
377
36108
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36107
diff changeset
378 def forwardpayload(self, fpout):
36403
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36402
diff changeset
379 # 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: 36402
diff changeset
380 # 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: 36402
diff changeset
381 # interprets it as an error.
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36402
diff changeset
382 _sshv1respondbytes(self._fout, b'')
b8d0761a85c7 wireproto: document the wonky push protocol for SSH
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36402
diff changeset
383
36108
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36107
diff changeset
384 # The file is in the form:
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36107
diff changeset
385 #
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36107
diff changeset
386 # <chunk size>\n<chunk>
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36107
diff changeset
387 # ...
90ca4986616c wireprotoserver: rename getfile() to forwardpayload() (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36107
diff changeset
388 # 0\n
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
389 count = int(self._fin.readline())
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
390 while count:
35910
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
391 fpout.write(self._fin.read(count))
f1efc0caeab7 wireprotoserver: make some instance attributes private
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35909
diff changeset
392 count = int(self._fin.readline())
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
393
36104
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36103
diff changeset
394 @contextlib.contextmanager
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36103
diff changeset
395 def mayberedirectstdio(self):
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36103
diff changeset
396 yield None
2ad145fbde54 wireprotoserver: add context manager mechanism for redirecting stdio
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36103
diff changeset
397
36107
957e773614d0 wireprotoserver: rename _client to client (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36106
diff changeset
398 def client(self):
36103
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
399 client = encoding.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
400 return 'remote:ssh:' + client
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
401
36642
6e585bca962e wireproto: add transport specific capabilities in the transport
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36639
diff changeset
402 def addcapabilities(self, repo, caps):
6e585bca962e wireproto: add transport specific capabilities in the transport
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36639
diff changeset
403 return caps
6e585bca962e wireproto: add transport specific capabilities in the transport
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36639
diff changeset
404
36809
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36808
diff changeset
405 def checkperm(self, perm):
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36808
diff changeset
406 pass
66de4555cefd wireproto: formalize permissions checking as part of protocol interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36808
diff changeset
407
36253
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
408 class sshv2protocolhandler(sshv1protocolhandler):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
409 """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: 36252
diff changeset
410
36639
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36565
diff changeset
411 @property
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36565
diff changeset
412 def name(self):
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36565
diff changeset
413 return wireprototypes.SSHV2
af0d38f015bb wireprotoserver: identify requests via version 2 of SSH protocol as such
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36565
diff changeset
414
36552
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36403
diff changeset
415 def _runsshserver(ui, repo, fin, fout, ev):
36253
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
416 # 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: 36252
diff changeset
417 # states are defined:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
418 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
419 # protov1-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
420 # 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: 36252
diff changeset
421 # 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: 36252
diff changeset
422 # after the other.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
423 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
424 # protov2-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
425 # Server is in protocol version 2 serving mode.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
426 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
427 # upgrade-initial
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
428 # 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: 36252
diff changeset
429 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
430 # upgrade-v2-filter-legacy-handshake
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
431 # 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: 36252
diff changeset
432 # the legacy handshake from version 1.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
433 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
434 # upgrade-v2-finish
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
435 # 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: 36252
diff changeset
436 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
437 # shutdown
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
438 # 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: 36252
diff changeset
439 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
440 # And here are their transitions:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
441 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
442 # protov1-serving -> shutdown
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
443 # 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: 36252
diff changeset
444 # error.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
445 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
446 # protov1-serving -> upgrade-initial
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
447 # An upgrade request line was seen.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
448 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
449 # upgrade-initial -> upgrade-v2-filter-legacy-handshake
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
450 # 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: 36252
diff changeset
451 # process a legacy handshake.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
452 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
453 # upgrade-v2-filter-legacy-handshake -> shutdown
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
454 # Client did not fulfill upgrade handshake requirements.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
455 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
456 # upgrade-v2-filter-legacy-handshake -> upgrade-v2-finish
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
457 # Client fulfilled version 2 upgrade requirements. Finishing that
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
458 # upgrade.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
459 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
460 # upgrade-v2-finish -> protov2-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
461 # 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: 36252
diff changeset
462 # version 2.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
463 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
464 # protov2-serving -> protov1-serving
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
465 # 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: 36252
diff changeset
466 # version 1 except for the handshake.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
467
36252
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
468 state = 'protov1-serving'
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
469 proto = sshv1protocolhandler(ui, fin, fout)
36253
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
470 protoswitched = False
36252
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
471
36552
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36403
diff changeset
472 while not ev.is_set():
36252
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
473 if state == 'protov1-serving':
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
474 # Commands are issued on new lines.
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
475 request = fin.readline()[:-1]
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
476
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
477 # Empty lines signal to terminate the connection.
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
478 if not request:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
479 state = 'shutdown'
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
480 continue
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
481
36253
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
482 # 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: 36252
diff changeset
483 # handle it.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
484 if request.startswith(b'upgrade '):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
485 if protoswitched:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
486 _sshv1respondooberror(fout, ui.ferr,
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
487 b'cannot upgrade protocols multiple '
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
488 b'times')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
489 state = 'shutdown'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
490 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
491
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
492 state = 'upgrade-initial'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
493 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
494
36252
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
495 available = wireproto.commands.commandavailable(request, proto)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
496
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
497 # 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: 36251
diff changeset
498 # back to waiting for a new command.
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
499 if not available:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
500 _sshv1respondbytes(fout, b'')
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
501 continue
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
502
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
503 rsp = wireproto.dispatch(repo, proto, request)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
504
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
505 if isinstance(rsp, bytes):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
506 _sshv1respondbytes(fout, rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
507 elif isinstance(rsp, wireprototypes.bytesresponse):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
508 _sshv1respondbytes(fout, rsp.data)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
509 elif isinstance(rsp, wireprototypes.streamres):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
510 _sshv1respondstream(fout, rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
511 elif isinstance(rsp, wireprototypes.streamreslegacy):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
512 _sshv1respondstream(fout, rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
513 elif isinstance(rsp, wireprototypes.pushres):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
514 _sshv1respondbytes(fout, b'')
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
515 _sshv1respondbytes(fout, b'%d' % rsp.res)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
516 elif isinstance(rsp, wireprototypes.pusherr):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
517 _sshv1respondbytes(fout, rsp.res)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
518 elif isinstance(rsp, wireprototypes.ooberror):
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
519 _sshv1respondooberror(fout, ui.ferr, rsp.message)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
520 else:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
521 raise error.ProgrammingError('unhandled response type from '
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
522 'wire protocol command: %s' % rsp)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
523
36253
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
524 # 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: 36252
diff changeset
525 elif state == 'protov2-serving':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
526 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
527 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
528
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
529 elif state == 'upgrade-initial':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
530 # 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: 36252
diff changeset
531 # protocols.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
532 assert not protoswitched
36565
3cd245945ef3 wireprotoserver: move SSHV1 and SSHV2 constants to wireprototypes
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36555
diff changeset
533 assert proto.name == wireprototypes.SSHV1
36253
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
534
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
535 # Expected: upgrade <token> <capabilities>
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
536 # 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: 36252
diff changeset
537 # 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: 36252
diff changeset
538 # We treat this as an unknown command.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
539 try:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
540 token, caps = request.split(b' ')[1:]
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
541 except ValueError:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
542 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
543 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
544 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
545
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
546 # 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: 36252
diff changeset
547 if not ui.configbool('experimental', 'sshserver.support-v2'):
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
548 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
549 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
550 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
551
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
552 try:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
553 caps = urlreq.parseqs(caps)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
554 except ValueError:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
555 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
556 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
557 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
558
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
559 # 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: 36252
diff changeset
560 # the upgrade request.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
561 wantedprotos = caps.get(b'proto', [b''])[0]
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
562 if SSHV2 not in wantedprotos:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
563 _sshv1respondbytes(fout, b'')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
564 state = 'protov1-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
565 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
566
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
567 # 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: 36252
diff changeset
568 # 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: 36252
diff changeset
569 state = 'upgrade-v2-filter-legacy-handshake'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
570 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
571
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
572 elif state == 'upgrade-v2-filter-legacy-handshake':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
573 # 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: 36252
diff changeset
574 # request. Expected lines:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
575 #
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
576 # hello
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
577 # between
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
578 # pairs 81
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
579 # 0000...-0000...
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
580
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
581 ok = True
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
582 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: 36252
diff changeset
583 request = fin.readline()[:-1]
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
584
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
585 if request != line:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
586 _sshv1respondooberror(fout, ui.ferr,
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
587 b'malformed handshake protocol: '
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
588 b'missing %s' % line)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
589 ok = False
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
590 state = 'shutdown'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
591 break
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
592
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
593 if not ok:
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
594 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
595
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
596 request = fin.read(81)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
597 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: 36252
diff changeset
598 _sshv1respondooberror(fout, ui.ferr,
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
599 b'malformed handshake protocol: '
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
600 b'missing between argument value')
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
601 state = 'shutdown'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
602 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
603
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
604 state = 'upgrade-v2-finish'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
605 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
606
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
607 elif state == 'upgrade-v2-finish':
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
608 # Send the upgrade response.
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
609 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: 36252
diff changeset
610 servercaps = wireproto.capabilities(repo, proto)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
611 rsp = b'capabilities: %s' % servercaps.data
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
612 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: 36252
diff changeset
613 fout.flush()
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
614
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
615 proto = sshv2protocolhandler(ui, fin, fout)
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
616 protoswitched = True
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
617
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
618 state = 'protov2-serving'
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
619 continue
464bedc0fdb4 wireprotoserver: handle SSH protocol version 2 upgrade requests
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36252
diff changeset
620
36252
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
621 elif state == 'shutdown':
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
622 break
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
623
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
624 else:
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
625 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: 36251
diff changeset
626 state)
3b3a987bbbaa wireprotoserver: move SSH server operation to a standalone function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36251
diff changeset
627
36103
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
628 class sshserver(object):
36555
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36552
diff changeset
629 def __init__(self, ui, repo, logfh=None):
36103
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
630 self._ui = ui
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
631 self._repo = repo
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
632 self._fin = ui.fin
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
633 self._fout = ui.fout
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
634
36555
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36552
diff changeset
635 # 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: 36552
diff changeset
636 if logfh:
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36552
diff changeset
637 self._fout = util.makeloggingfileobject(
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36552
diff changeset
638 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: 36552
diff changeset
639 ui.ferr = util.makeloggingfileobject(
7cc4a9b9732a wireprotoserver: support logging SSH server I/O to a file descriptor
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36552
diff changeset
640 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: 36552
diff changeset
641
36103
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
642 hook.redirect(True)
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
643 ui.fout = repo.ui.fout = ui.ferr
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
644
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
645 # Prevent insertion/deletion of CRs
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
646 util.setbinary(self._fin)
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
647 util.setbinary(self._fout)
bf676267f64f wireprotoserver: split ssh protocol handler and server
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36102
diff changeset
648
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
649 def serve_forever(self):
36552
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36403
diff changeset
650 self.serveuntil(threading.Event())
35899
1bf5263fe5cc wireprotoserver: move sshserver into module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35898
diff changeset
651 sys.exit(0)
36552
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36403
diff changeset
652
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36403
diff changeset
653 def serveuntil(self, ev):
e7411fb7ba7f wireprotoserver: ability to run an SSH server until an event is set
Gregory Szorc <gregory.szorc@gmail.com>
parents: 36403
diff changeset
654 """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: 36403
diff changeset
655 _runsshserver(self._ui, self._repo, self._fin, self._fout, ev)