1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
# sshserver.py - ssh protocol server support for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.
from i18n import _
from node import bin, hex
import streamclone, util, hook
import os, sys, tempfile, urllib
class sshserver(object):
def __init__(self, ui, repo):
self.ui = ui
self.repo = repo
self.lock = None
self.fin = sys.stdin
self.fout = sys.stdout
hook.redirect(True)
sys.stdout = sys.stderr
# Prevent insertion/deletion of CRs
util.set_binary(self.fin)
util.set_binary(self.fout)
def getarg(self):
argline = self.fin.readline()[:-1]
arg, l = argline.split()
val = self.fin.read(int(l))
return arg, val
def respond(self, v):
self.fout.write("%d\n" % len(v))
self.fout.write(v)
self.fout.flush()
def serve_forever(self):
try:
while self.serve_one(): pass
finally:
if self.lock is not None:
self.lock.release()
sys.exit(0)
def serve_one(self):
cmd = self.fin.readline()[:-1]
if cmd:
impl = getattr(self, 'do_' + cmd, None)
if impl: impl()
else: self.respond("")
return cmd != ''
def do_lookup(self):
arg, key = self.getarg()
assert arg == 'key'
try:
r = hex(self.repo.lookup(key))
success = 1
except Exception, inst:
r = str(inst)
success = 0
self.respond("%s %s\n" % (success, r))
def do_branchmap(self):
branchmap = self.repo.branchmap()
heads = []
for branch, nodes in branchmap.iteritems():
branchname = urllib.quote(branch)
branchnodes = [hex(node) for node in nodes]
heads.append('%s %s' % (branchname, ' '.join(branchnodes)))
self.respond('\n'.join(heads))
def do_heads(self):
h = self.repo.heads()
self.respond(" ".join(map(hex, h)) + "\n")
def do_hello(self):
'''the hello command returns a set of lines describing various
interesting things about the server, in an RFC822-like format.
Currently the only one defined is "capabilities", which
consists of a line in the form:
capabilities: space separated list of tokens
'''
caps = ['unbundle', 'lookup', 'changegroupsubset', 'branchmap']
if self.ui.configbool('server', 'uncompressed'):
caps.append('stream=%d' % self.repo.changelog.version)
self.respond("capabilities: %s\n" % (' '.join(caps),))
def do_lock(self):
'''DEPRECATED - allowing remote client to lock repo is not safe'''
self.lock = self.repo.lock()
self.respond("")
def do_unlock(self):
'''DEPRECATED'''
if self.lock:
self.lock.release()
self.lock = None
self.respond("")
def do_branches(self):
arg, nodes = self.getarg()
nodes = map(bin, nodes.split(" "))
r = []
for b in self.repo.branches(nodes):
r.append(" ".join(map(hex, b)) + "\n")
self.respond("".join(r))
def do_between(self):
arg, pairs = self.getarg()
pairs = [map(bin, p.split("-")) for p in pairs.split(" ")]
r = []
for b in self.repo.between(pairs):
r.append(" ".join(map(hex, b)) + "\n")
self.respond("".join(r))
def do_changegroup(self):
nodes = []
arg, roots = self.getarg()
nodes = map(bin, roots.split(" "))
cg = self.repo.changegroup(nodes, 'serve')
while True:
d = cg.read(4096)
if not d:
break
self.fout.write(d)
self.fout.flush()
def do_changegroupsubset(self):
argmap = dict([self.getarg(), self.getarg()])
bases = [bin(n) for n in argmap['bases'].split(' ')]
heads = [bin(n) for n in argmap['heads'].split(' ')]
cg = self.repo.changegroupsubset(bases, heads, 'serve')
while True:
d = cg.read(4096)
if not d:
break
self.fout.write(d)
self.fout.flush()
def do_addchangegroup(self):
'''DEPRECATED'''
if not self.lock:
self.respond("not locked")
return
self.respond("")
r = self.repo.addchangegroup(self.fin, 'serve', self.client_url())
self.respond(str(r))
def client_url(self):
client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
return 'remote:ssh:' + client
def do_unbundle(self):
their_heads = self.getarg()[1].split()
def check_heads():
heads = map(hex, self.repo.heads())
return their_heads == [hex('force')] or their_heads == heads
# fail early if possible
if not check_heads():
self.respond(_('unsynced changes'))
return
self.respond('')
# write bundle data to temporary file because it can be big
tempname = fp = None
try:
fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
fp = os.fdopen(fd, 'wb+')
count = int(self.fin.readline())
while count:
fp.write(self.fin.read(count))
count = int(self.fin.readline())
was_locked = self.lock is not None
if not was_locked:
self.lock = self.repo.lock()
try:
if not check_heads():
# someone else committed/pushed/unbundled while we
# were transferring data
self.respond(_('unsynced changes'))
return
self.respond('')
# push can proceed
fp.seek(0)
r = self.repo.addchangegroup(fp, 'serve', self.client_url())
self.respond(str(r))
finally:
if not was_locked:
self.lock.release()
self.lock = None
finally:
if fp is not None:
fp.close()
if tempname is not None:
os.unlink(tempname)
def do_stream_out(self):
try:
for chunk in streamclone.stream_out(self.repo):
self.fout.write(chunk)
self.fout.flush()
except streamclone.StreamException, inst:
self.fout.write(str(inst))
self.fout.flush()
|
