|
135
|
1 # sshserver.py - ssh protocol server support for mercurial
|
|
|
2 #
|
|
|
3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
|
|
|
4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
|
|
|
5 #
|
|
|
6 # This software may be used and distributed according to the terms of the
|
|
|
7 # GNU General Public License version 2, incorporated herein by reference.
|
|
|
8
|
|
|
9 from i18n import _
|
|
|
10 from node import bin, hex
|
|
|
11 import streamclone, util, hook
|
|
|
12 import os, sys, tempfile, urllib
|
|
|
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
|
|
|
22 hook.redirect(True)
|
|
|
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):
|
|
|
41 try:
|
|
|
42 while self.serve_one(): pass
|
|
|
43 finally:
|
|
|
44 if self.lock is not None:
|
|
|
45 self.lock.release()
|
|
|
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()
|
|
|
53 else: self.respond("")
|
|
|
54 return cmd != ''
|
|
|
55
|
|
|
56 def do_lookup(self):
|
|
|
57 arg, key = self.getarg()
|
|
|
58 assert arg == 'key'
|
|
|
59 try:
|
|
|
60 r = hex(self.repo.lookup(key))
|
|
|
61 success = 1
|
|
|
62 except Exception,inst:
|
|
|
63 r = str(inst)
|
|
|
64 success = 0
|
|
|
65 self.respond("%s %s\n" % (success, r))
|
|
|
66
|
|
|
67 def do_branchmap(self):
|
|
|
68 branchmap = self.repo.branchmap()
|
|
|
69 heads = []
|
|
|
70 for branch, nodes in branchmap.iteritems():
|
|
|
71 branchname = urllib.quote(branch)
|
|
|
72 branchnodes = [hex(node) for node in nodes]
|
|
|
73 heads.append('%s %s' % (branchname, ' '.join(branchnodes)))
|
|
|
74 self.respond('\n'.join(heads))
|
|
|
75
|
|
|
76 def do_heads(self):
|
|
|
77 h = self.repo.heads()
|
|
|
78 self.respond(" ".join(map(hex, h)) + "\n")
|
|
|
79
|
|
|
80 def do_hello(self):
|
|
|
81 '''the hello command returns a set of lines describing various
|
|
|
82 interesting things about the server, in an RFC822-like format.
|
|
|
83 Currently the only one defined is "capabilities", which
|
|
|
84 consists of a line in the form:
|
|
|
85
|
|
|
86 capabilities: space separated list of tokens
|
|
|
87 '''
|
|
|
88
|
|
|
89 caps = ['unbundle', 'lookup', 'changegroupsubset', 'branchmap']
|
|
|
90 if self.ui.configbool('server', 'uncompressed'):
|
|
|
91 caps.append('stream=%d' % self.repo.changelog.version)
|
|
|
92 self.respond("capabilities: %s\n" % (' '.join(caps),))
|
|
|
93
|
|
|
94 def do_lock(self):
|
|
|
95 '''DEPRECATED - allowing remote client to lock repo is not safe'''
|
|
|
96
|
|
|
97 self.lock = self.repo.lock()
|
|
|
98 self.respond("")
|
|
|
99
|
|
|
100 def do_unlock(self):
|
|
|
101 '''DEPRECATED'''
|
|
|
102
|
|
|
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
|
|
|
138 def do_changegroupsubset(self):
|
|
|
139 argmap = dict([self.getarg(), self.getarg()])
|
|
|
140 bases = [bin(n) for n in argmap['bases'].split(' ')]
|
|
|
141 heads = [bin(n) for n in argmap['heads'].split(' ')]
|
|
|
142
|
|
|
143 cg = self.repo.changegroupsubset(bases, heads, 'serve')
|
|
|
144 while True:
|
|
|
145 d = cg.read(4096)
|
|
|
146 if not d:
|
|
|
147 break
|
|
|
148 self.fout.write(d)
|
|
|
149
|
|
|
150 self.fout.flush()
|
|
|
151
|
|
|
152 def do_addchangegroup(self):
|
|
|
153 '''DEPRECATED'''
|
|
|
154
|
|
|
155 if not self.lock:
|
|
|
156 self.respond("not locked")
|
|
|
157 return
|
|
|
158
|
|
|
159 self.respond("")
|
|
|
160 r = self.repo.addchangegroup(self.fin, 'serve', self.client_url())
|
|
|
161 self.respond(str(r))
|
|
|
162
|
|
|
163 def client_url(self):
|
|
|
164 client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
|
|
|
165 return 'remote:ssh:' + client
|
|
|
166
|
|
|
167 def do_unbundle(self):
|
|
|
168 their_heads = self.getarg()[1].split()
|
|
|
169
|
|
|
170 def check_heads():
|
|
|
171 heads = map(hex, self.repo.heads())
|
|
|
172 return their_heads == [hex('force')] or their_heads == heads
|
|
|
173
|
|
|
174 # fail early if possible
|
|
|
175 if not check_heads():
|
|
|
176 self.respond(_('unsynced changes'))
|
|
|
177 return
|
|
|
178
|
|
|
179 self.respond('')
|
|
|
180
|
|
|
181 # write bundle data to temporary file because it can be big
|
|
|
182 tempname = fp = None
|
|
|
183 try:
|
|
|
184 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
|
|
|
185 fp = os.fdopen(fd, 'wb+')
|
|
|
186
|
|
|
187 count = int(self.fin.readline())
|
|
|
188 while count:
|
|
|
189 fp.write(self.fin.read(count))
|
|
|
190 count = int(self.fin.readline())
|
|
|
191
|
|
|
192 was_locked = self.lock is not None
|
|
|
193 if not was_locked:
|
|
|
194 self.lock = self.repo.lock()
|
|
|
195 try:
|
|
|
196 if not check_heads():
|
|
|
197 # someone else committed/pushed/unbundled while we
|
|
|
198 # were transferring data
|
|
|
199 self.respond(_('unsynced changes'))
|
|
|
200 return
|
|
|
201 self.respond('')
|
|
|
202
|
|
|
203 # push can proceed
|
|
|
204
|
|
|
205 fp.seek(0)
|
|
|
206 r = self.repo.addchangegroup(fp, 'serve', self.client_url())
|
|
|
207 self.respond(str(r))
|
|
|
208 finally:
|
|
|
209 if not was_locked:
|
|
|
210 self.lock.release()
|
|
|
211 self.lock = None
|
|
|
212 finally:
|
|
|
213 if fp is not None:
|
|
|
214 fp.close()
|
|
|
215 if tempname is not None:
|
|
|
216 os.unlink(tempname)
|
|
|
217
|
|
|
218 def do_stream_out(self):
|
|
|
219 try:
|
|
|
220 for chunk in streamclone.stream_out(self.repo):
|
|
|
221 self.fout.write(chunk)
|
|
|
222 self.fout.flush()
|
|
|
223 except streamclone.StreamException, inst:
|
|
|
224 self.fout.write(str(inst))
|
|
|
225 self.fout.flush()
|
