Mercurial > hg
annotate mercurial/sshserver.py @ 8564:6b9ec23b09fc
named branches: improve pre-push logic (issue736)
Each named branch is considered separately, and the push is allowed if
no new branch heads are created for any named branch to be pushed.
Due to some tests's use of --debug, their output will change after this
addition. This has been fixed as well.
Co-contributor: Henrik Stuart <henrik.stuart@edlund.dk>
author | Sune Foldager <cryo@cyanite.org> |
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date | Sat, 23 May 2009 17:04:31 +0200 |
parents | e3495c399006 |
children | 061eeb602354 |
rev | line source |
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2399 | 1 # sshserver.py - ssh protocol server support for mercurial |
2396 | 2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
2859 | 4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
2396 | 5 # |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2, incorporated herein by reference. |
2396 | 8 |
3891 | 9 from i18n import _ |
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10 from node import bin, hex |
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11 import streamclone, util, hook |
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12 import os, sys, tempfile, urllib |
2396 | 13 |
14 class sshserver(object): | |
15 def __init__(self, ui, repo): | |
16 self.ui = ui | |
17 self.repo = repo | |
18 self.lock = None | |
19 self.fin = sys.stdin | |
20 self.fout = sys.stdout | |
21 | |
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22 hook.redirect(True) |
2396 | 23 sys.stdout = sys.stderr |
24 | |
25 # Prevent insertion/deletion of CRs | |
26 util.set_binary(self.fin) | |
27 util.set_binary(self.fout) | |
28 | |
29 def getarg(self): | |
30 argline = self.fin.readline()[:-1] | |
31 arg, l = argline.split() | |
32 val = self.fin.read(int(l)) | |
33 return arg, val | |
34 | |
35 def respond(self, v): | |
36 self.fout.write("%d\n" % len(v)) | |
37 self.fout.write(v) | |
38 self.fout.flush() | |
39 | |
40 def serve_forever(self): | |
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41 try: |
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42 while self.serve_one(): pass |
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43 finally: |
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44 if self.lock is not None: |
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45 self.lock.release() |
2396 | 46 sys.exit(0) |
47 | |
48 def serve_one(self): | |
49 cmd = self.fin.readline()[:-1] | |
50 if cmd: | |
51 impl = getattr(self, 'do_' + cmd, None) | |
52 if impl: impl() | |
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53 else: self.respond("") |
2396 | 54 return cmd != '' |
55 | |
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56 def do_lookup(self): |
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57 arg, key = self.getarg() |
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58 assert arg == 'key' |
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59 try: |
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60 r = hex(self.repo.lookup(key)) |
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61 success = 1 |
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62 except Exception,inst: |
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63 r = str(inst) |
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64 success = 0 |
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65 self.respond("%s %s\n" % (success, r)) |
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66 |
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67 def do_branchmap(self): |
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68 branchmap = self.repo.branchmap() |
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69 heads = [] |
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70 for branch, nodes in branchmap.iteritems(): |
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71 branchname = urllib.quote(branch) |
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72 branchnodes = [hex(node) for node in nodes] |
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73 heads.append('%s %s' % (branchname, ' '.join(branchnodes))) |
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74 self.respond('\n'.join(heads)) |
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75 |
2396 | 76 def do_heads(self): |
77 h = self.repo.heads() | |
78 self.respond(" ".join(map(hex, h)) + "\n") | |
79 | |
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80 def do_hello(self): |
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81 '''the hello command returns a set of lines describing various |
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82 interesting things about the server, in an RFC822-like format. |
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83 Currently the only one defined is "capabilities", which |
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84 consists of a line in the form: |
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85 |
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86 capabilities: space separated list of tokens |
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87 ''' |
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88 |
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89 caps = ['unbundle', 'lookup', 'changegroupsubset', 'branchmap'] |
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90 if self.ui.configbool('server', 'uncompressed'): |
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91 caps.append('stream=%d' % self.repo.changelog.version) |
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92 self.respond("capabilities: %s\n" % (' '.join(caps),)) |
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93 |
2396 | 94 def do_lock(self): |
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95 '''DEPRECATED - allowing remote client to lock repo is not safe''' |
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96 |
2396 | 97 self.lock = self.repo.lock() |
98 self.respond("") | |
99 | |
100 def do_unlock(self): | |
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101 '''DEPRECATED''' |
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102 |
2396 | 103 if self.lock: |
104 self.lock.release() | |
105 self.lock = None | |
106 self.respond("") | |
107 | |
108 def do_branches(self): | |
109 arg, nodes = self.getarg() | |
110 nodes = map(bin, nodes.split(" ")) | |
111 r = [] | |
112 for b in self.repo.branches(nodes): | |
113 r.append(" ".join(map(hex, b)) + "\n") | |
114 self.respond("".join(r)) | |
115 | |
116 def do_between(self): | |
117 arg, pairs = self.getarg() | |
118 pairs = [map(bin, p.split("-")) for p in pairs.split(" ")] | |
119 r = [] | |
120 for b in self.repo.between(pairs): | |
121 r.append(" ".join(map(hex, b)) + "\n") | |
122 self.respond("".join(r)) | |
123 | |
124 def do_changegroup(self): | |
125 nodes = [] | |
126 arg, roots = self.getarg() | |
127 nodes = map(bin, roots.split(" ")) | |
128 | |
129 cg = self.repo.changegroup(nodes, 'serve') | |
130 while True: | |
131 d = cg.read(4096) | |
132 if not d: | |
133 break | |
134 self.fout.write(d) | |
135 | |
136 self.fout.flush() | |
137 | |
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138 def do_changegroupsubset(self): |
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139 argmap = dict([self.getarg(), self.getarg()]) |
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140 bases = [bin(n) for n in argmap['bases'].split(' ')] |
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141 heads = [bin(n) for n in argmap['heads'].split(' ')] |
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142 |
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143 cg = self.repo.changegroupsubset(bases, heads, 'serve') |
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144 while True: |
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145 d = cg.read(4096) |
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146 if not d: |
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147 break |
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148 self.fout.write(d) |
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149 |
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150 self.fout.flush() |
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151 |
2396 | 152 def do_addchangegroup(self): |
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153 '''DEPRECATED''' |
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154 |
2396 | 155 if not self.lock: |
156 self.respond("not locked") | |
157 return | |
158 | |
159 self.respond("") | |
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160 r = self.repo.addchangegroup(self.fin, 'serve', self.client_url()) |
2396 | 161 self.respond(str(r)) |
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162 |
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163 def client_url(self): |
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164 client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0] |
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165 return 'remote:ssh:' + client |
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166 |
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167 def do_unbundle(self): |
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168 their_heads = self.getarg()[1].split() |
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169 |
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170 def check_heads(): |
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171 heads = map(hex, self.repo.heads()) |
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172 return their_heads == [hex('force')] or their_heads == heads |
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173 |
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174 # fail early if possible |
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175 if not check_heads(): |
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176 self.respond(_('unsynced changes')) |
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177 return |
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178 |
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179 self.respond('') |
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180 |
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181 # write bundle data to temporary file because it can be big |
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182 tempname = fp = None |
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183 try: |
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184 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-') |
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185 fp = os.fdopen(fd, 'wb+') |
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186 |
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187 count = int(self.fin.readline()) |
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188 while count: |
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189 fp.write(self.fin.read(count)) |
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190 count = int(self.fin.readline()) |
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191 |
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192 was_locked = self.lock is not None |
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193 if not was_locked: |
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194 self.lock = self.repo.lock() |
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195 try: |
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196 if not check_heads(): |
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197 # someone else committed/pushed/unbundled while we |
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198 # were transferring data |
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199 self.respond(_('unsynced changes')) |
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200 return |
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201 self.respond('') |
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202 |
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203 # push can proceed |
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204 |
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205 fp.seek(0) |
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206 r = self.repo.addchangegroup(fp, 'serve', self.client_url()) |
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207 self.respond(str(r)) |
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208 finally: |
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209 if not was_locked: |
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210 self.lock.release() |
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211 self.lock = None |
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212 finally: |
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213 if fp is not None: |
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214 fp.close() |
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215 if tempname is not None: |
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216 os.unlink(tempname) |
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217 |
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218 def do_stream_out(self): |
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219 try: |
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220 for chunk in streamclone.stream_out(self.repo): |
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221 self.fout.write(chunk) |
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222 self.fout.flush() |
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223 except streamclone.StreamException, inst: |
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224 self.fout.write(str(inst)) |
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225 self.fout.flush() |