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1 #
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2 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2, incorporated herein by reference.
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7
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8 import cStringIO, zlib, tempfile, errno, os, sys, urllib
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9 from upmana.mercurial import util, streamclone
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10 from upmana.mercurial.node import bin, hex
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11 from upmana.mercurial import changegroup as changegroupmod
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12 from common import ErrorResponse, HTTP_OK, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
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13
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14 # __all__ is populated with the allowed commands. Be sure to add to it if
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15 # you're adding a new command, or the new command won't work.
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16
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17 __all__ = [
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18 'lookup', 'heads', 'branches', 'between', 'changegroup',
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19 'changegroupsubset', 'capabilities', 'unbundle', 'stream_out',
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20 'branchmap',
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21 ]
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22
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23 HGTYPE = 'application/mercurial-0.1'
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24
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25 def lookup(repo, req):
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26 try:
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27 r = hex(repo.lookup(req.form['key'][0]))
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28 success = 1
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29 except Exception,inst:
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30 r = str(inst)
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31 success = 0
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32 resp = "%s %s\n" % (success, r)
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33 req.respond(HTTP_OK, HGTYPE, length=len(resp))
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34 yield resp
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35
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36 def heads(repo, req):
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37 resp = " ".join(map(hex, repo.heads())) + "\n"
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38 req.respond(HTTP_OK, HGTYPE, length=len(resp))
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39 yield resp
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40
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41 def branchmap(repo, req):
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42 branches = repo.branchmap()
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43 heads = []
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44 for branch, nodes in branches.iteritems():
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45 branchname = urllib.quote(branch)
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46 branchnodes = [hex(node) for node in nodes]
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47 heads.append('%s %s' % (branchname, ' '.join(branchnodes)))
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48 resp = '\n'.join(heads)
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49 req.respond(HTTP_OK, HGTYPE, length=len(resp))
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50 yield resp
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51
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52 def branches(repo, req):
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53 nodes = []
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54 if 'nodes' in req.form:
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55 nodes = map(bin, req.form['nodes'][0].split(" "))
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56 resp = cStringIO.StringIO()
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57 for b in repo.branches(nodes):
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58 resp.write(" ".join(map(hex, b)) + "\n")
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59 resp = resp.getvalue()
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60 req.respond(HTTP_OK, HGTYPE, length=len(resp))
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61 yield resp
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62
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63 def between(repo, req):
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64 if 'pairs' in req.form:
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65 pairs = [map(bin, p.split("-"))
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66 for p in req.form['pairs'][0].split(" ")]
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67 resp = cStringIO.StringIO()
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68 for b in repo.between(pairs):
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69 resp.write(" ".join(map(hex, b)) + "\n")
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70 resp = resp.getvalue()
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71 req.respond(HTTP_OK, HGTYPE, length=len(resp))
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72 yield resp
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73
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74 def changegroup(repo, req):
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75 req.respond(HTTP_OK, HGTYPE)
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76 nodes = []
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77
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78 if 'roots' in req.form:
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79 nodes = map(bin, req.form['roots'][0].split(" "))
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80
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81 z = zlib.compressobj()
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82 f = repo.changegroup(nodes, 'serve')
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83 while 1:
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84 chunk = f.read(4096)
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85 if not chunk:
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86 break
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87 yield z.compress(chunk)
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88
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89 yield z.flush()
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90
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91 def changegroupsubset(repo, req):
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92 req.respond(HTTP_OK, HGTYPE)
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93 bases = []
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94 heads = []
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95
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96 if 'bases' in req.form:
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97 bases = [bin(x) for x in req.form['bases'][0].split(' ')]
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98 if 'heads' in req.form:
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99 heads = [bin(x) for x in req.form['heads'][0].split(' ')]
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100
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101 z = zlib.compressobj()
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102 f = repo.changegroupsubset(bases, heads, 'serve')
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103 while 1:
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104 chunk = f.read(4096)
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105 if not chunk:
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106 break
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107 yield z.compress(chunk)
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108
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109 yield z.flush()
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110
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111 def capabilities(repo, req):
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112 caps = ['lookup', 'changegroupsubset', 'branchmap']
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113 if repo.ui.configbool('server', 'uncompressed', untrusted=True):
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114 caps.append('stream=%d' % repo.changelog.version)
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115 if changegroupmod.bundlepriority:
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116 caps.append('unbundle=%s' % ','.join(changegroupmod.bundlepriority))
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117 rsp = ' '.join(caps)
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118 req.respond(HTTP_OK, HGTYPE, length=len(rsp))
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119 yield rsp
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120
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121 def unbundle(repo, req):
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122
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123 proto = req.env.get('wsgi.url_scheme') or 'http'
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124 their_heads = req.form['heads'][0].split(' ')
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125
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126 def check_heads():
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127 heads = map(hex, repo.heads())
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128 return their_heads == [hex('force')] or their_heads == heads
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129
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130 # fail early if possible
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131 if not check_heads():
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132 req.drain()
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133 raise ErrorResponse(HTTP_OK, 'unsynced changes')
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134
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135 # do not lock repo until all changegroup data is
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136 # streamed. save to temporary file.
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137
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138 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
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139 fp = os.fdopen(fd, 'wb+')
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140 try:
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141 length = int(req.env['CONTENT_LENGTH'])
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142 for s in util.filechunkiter(req, limit=length):
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143 fp.write(s)
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144
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145 try:
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146 lock = repo.lock()
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147 try:
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148 if not check_heads():
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149 raise ErrorResponse(HTTP_OK, 'unsynced changes')
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150
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151 fp.seek(0)
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152 header = fp.read(6)
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153 if header.startswith('HG') and not header.startswith('HG10'):
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154 raise ValueError('unknown bundle version')
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155 elif header not in changegroupmod.bundletypes:
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156 raise ValueError('unknown bundle compression type')
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157 gen = changegroupmod.unbundle(header, fp)
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158
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159 # send addchangegroup output to client
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160
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161 oldio = sys.stdout, sys.stderr
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162 sys.stderr = sys.stdout = cStringIO.StringIO()
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163
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164 try:
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165 url = 'remote:%s:%s:%s' % (
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166 proto,
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167 urllib.quote(req.env.get('REMOTE_HOST', '')),
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168 urllib.quote(req.env.get('REMOTE_USER', '')))
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169 try:
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170 ret = repo.addchangegroup(gen, 'serve', url)
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171 except util.Abort, inst:
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172 sys.stdout.write("abort: %s\n" % inst)
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173 ret = 0
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174 finally:
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175 val = sys.stdout.getvalue()
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176 sys.stdout, sys.stderr = oldio
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177 req.respond(HTTP_OK, HGTYPE)
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178 return '%d\n%s' % (ret, val),
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179 finally:
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180 lock.release()
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181 except ValueError, inst:
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182 raise ErrorResponse(HTTP_OK, inst)
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183 except (OSError, IOError), inst:
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184 filename = getattr(inst, 'filename', '')
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185 # Don't send our filesystem layout to the client
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186 if filename.startswith(repo.root):
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187 filename = filename[len(repo.root)+1:]
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188 else:
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189 filename = ''
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190 error = getattr(inst, 'strerror', 'Unknown error')
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191 if inst.errno == errno.ENOENT:
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192 code = HTTP_NOT_FOUND
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193 else:
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194 code = HTTP_SERVER_ERROR
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195 raise ErrorResponse(code, '%s: %s' % (error, filename))
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196 finally:
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197 fp.close()
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198 os.unlink(tempname)
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199
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200 def stream_out(repo, req):
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201 req.respond(HTTP_OK, HGTYPE)
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202 try:
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203 for chunk in streamclone.stream_out(repo, untrusted=True):
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204 yield chunk
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205 except streamclone.StreamException, inst:
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206 yield str(inst)
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