annotate mercurial/sshserver.py @ 2673:109a22f5434a

hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks all repository classes now have url() method that returns url of repo.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Tue, 25 Jul 2006 13:50:32 -0700
parents 064aef9162cc
children 345bac2bc4ec
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1 # sshserver.py - ssh protocol server support for mercurial
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2 #
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3 # Copyright 2005 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from demandload import demandload
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9 from i18n import gettext as _
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10 from node import *
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11 demandload(globals(), "os streamclone sys tempfile util")
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12
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13 class sshserver(object):
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14 def __init__(self, ui, repo):
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15 self.ui = ui
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16 self.repo = repo
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17 self.lock = None
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18 self.fin = sys.stdin
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19 self.fout = sys.stdout
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20
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21 sys.stdout = sys.stderr
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22
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23 # Prevent insertion/deletion of CRs
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24 util.set_binary(self.fin)
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25 util.set_binary(self.fout)
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26
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27 def getarg(self):
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28 argline = self.fin.readline()[:-1]
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29 arg, l = argline.split()
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30 val = self.fin.read(int(l))
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31 return arg, val
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32
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33 def respond(self, v):
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34 self.fout.write("%d\n" % len(v))
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35 self.fout.write(v)
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36 self.fout.flush()
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37
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38 def serve_forever(self):
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39 while self.serve_one(): pass
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40 sys.exit(0)
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41
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42 def serve_one(self):
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43 cmd = self.fin.readline()[:-1]
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44 if cmd:
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45 impl = getattr(self, 'do_' + cmd, None)
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46 if impl: impl()
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47 else: self.respond("")
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48 return cmd != ''
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49
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50 def do_heads(self):
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51 h = self.repo.heads()
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52 self.respond(" ".join(map(hex, h)) + "\n")
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53
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54 def do_hello(self):
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55 '''the hello command returns a set of lines describing various
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56 interesting things about the server, in an RFC822-like format.
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57 Currently the only one defined is "capabilities", which
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58 consists of a line in the form:
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59
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60 capabilities: space separated list of tokens
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61 '''
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62
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63 caps = ['unbundle']
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64 if self.ui.configbool('server', 'uncompressed'):
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65 caps.append('stream=%d' % self.repo.revlogversion)
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66 self.respond("capabilities: %s\n" % (' '.join(caps),))
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67
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68 def do_lock(self):
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69 '''DEPRECATED - allowing remote client to lock repo is not safe'''
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70
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71 self.lock = self.repo.lock()
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72 self.respond("")
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73
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74 def do_unlock(self):
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75 '''DEPRECATED'''
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76
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77 if self.lock:
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78 self.lock.release()
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79 self.lock = None
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80 self.respond("")
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81
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82 def do_branches(self):
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83 arg, nodes = self.getarg()
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84 nodes = map(bin, nodes.split(" "))
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85 r = []
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86 for b in self.repo.branches(nodes):
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87 r.append(" ".join(map(hex, b)) + "\n")
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88 self.respond("".join(r))
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89
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90 def do_between(self):
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91 arg, pairs = self.getarg()
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92 pairs = [map(bin, p.split("-")) for p in pairs.split(" ")]
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93 r = []
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94 for b in self.repo.between(pairs):
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95 r.append(" ".join(map(hex, b)) + "\n")
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96 self.respond("".join(r))
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97
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98 def do_changegroup(self):
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99 nodes = []
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100 arg, roots = self.getarg()
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101 nodes = map(bin, roots.split(" "))
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102
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103 cg = self.repo.changegroup(nodes, 'serve')
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104 while True:
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105 d = cg.read(4096)
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106 if not d:
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107 break
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108 self.fout.write(d)
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109
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110 self.fout.flush()
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111
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112 def do_addchangegroup(self):
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113 '''DEPRECATED'''
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114
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115 if not self.lock:
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116 self.respond("not locked")
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117 return
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118
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119 self.respond("")
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120 r = self.repo.addchangegroup(self.fin, 'serve', self.client_url())
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121 self.respond(str(r))
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122
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123 def client_url(self):
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124 client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
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125 return 'remote:ssh:' + client
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126
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127 def do_unbundle(self):
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128 their_heads = self.getarg()[1].split()
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129
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130 def check_heads():
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131 heads = map(hex, self.repo.heads())
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132 return their_heads == [hex('force')] or their_heads == heads
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133
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134 # fail early if possible
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135 if not check_heads():
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136 self.respond(_('unsynced changes'))
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137 return
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138
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139 self.respond('')
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140
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141 # write bundle data to temporary file because it can be big
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142
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143 try:
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144 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
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145 fp = os.fdopen(fd, 'wb+')
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146
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147 count = int(self.fin.readline())
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148 while count:
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149 fp.write(self.fin.read(count))
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150 count = int(self.fin.readline())
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151
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152 was_locked = self.lock is not None
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153 if not was_locked:
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154 self.lock = self.repo.lock()
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155 try:
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156 if not check_heads():
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157 # someone else committed/pushed/unbundled while we
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158 # were transferring data
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159 self.respond(_('unsynced changes'))
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160 return
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161 self.respond('')
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162
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163 # push can proceed
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164
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165 fp.seek(0)
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166 r = self.repo.addchangegroup(fp, 'serve', self.client_url())
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167 self.respond(str(r))
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168 finally:
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169 if not was_locked:
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170 self.lock.release()
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171 self.lock = None
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172 finally:
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173 fp.close()
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174 os.unlink(tempname)
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175
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176 def do_stream_out(self):
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177 streamclone.stream_out(self.repo, self.fout)