author | Dirkjan Ochtman <dirkjan@ochtman.nl> |
Sun, 29 Jun 2008 14:20:01 +0200 | |
changeset 6782 | b9d6ab187523 |
parent 6563 | 3b6f18851d87 |
child 6794 | 8ff321a381d0 |
permissions | -rw-r--r-- |
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# sshserver.py - ssh protocol server support for mercurial |
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# |
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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# |
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# This software may be used and distributed according to the terms |
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# of the GNU General Public License, incorporated herein by reference. |
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from i18n import _ |
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from node import bin, hex |
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import os, streamclone, sys, tempfile, util, hook |
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class sshserver(object): |
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def __init__(self, ui, repo): |
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self.ui = ui |
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self.repo = repo |
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self.lock = None |
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self.fin = sys.stdin |
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self.fout = sys.stdout |
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hook.redirect(True) |
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sys.stdout = sys.stderr |
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# Prevent insertion/deletion of CRs |
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util.set_binary(self.fin) |
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util.set_binary(self.fout) |
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def getarg(self): |
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argline = self.fin.readline()[:-1] |
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arg, l = argline.split() |
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val = self.fin.read(int(l)) |
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return arg, val |
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def respond(self, v): |
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self.fout.write("%d\n" % len(v)) |
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self.fout.write(v) |
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self.fout.flush() |
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def serve_forever(self): |
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while self.serve_one(): pass |
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sys.exit(0) |
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def serve_one(self): |
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cmd = self.fin.readline()[:-1] |
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if cmd: |
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impl = getattr(self, 'do_' + cmd, None) |
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if impl: impl() |
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else: self.respond("") |
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return cmd != '' |
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def do_lookup(self): |
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arg, key = self.getarg() |
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assert arg == 'key' |
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try: |
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r = hex(self.repo.lookup(key)) |
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success = 1 |
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except Exception,inst: |
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r = str(inst) |
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success = 0 |
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self.respond("%s %s\n" % (success, r)) |
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def do_heads(self): |
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h = self.repo.heads() |
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self.respond(" ".join(map(hex, h)) + "\n") |
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def do_hello(self): |
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'''the hello command returns a set of lines describing various |
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interesting things about the server, in an RFC822-like format. |
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Currently the only one defined is "capabilities", which |
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consists of a line in the form: |
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capabilities: space separated list of tokens |
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''' |
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caps = ['unbundle', 'lookup', 'changegroupsubset'] |
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if self.ui.configbool('server', 'uncompressed'): |
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caps.append('stream=%d' % self.repo.changelog.version) |
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self.respond("capabilities: %s\n" % (' '.join(caps),)) |
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def do_lock(self): |
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'''DEPRECATED - allowing remote client to lock repo is not safe''' |
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self.lock = self.repo.lock() |
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self.respond("") |
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def do_unlock(self): |
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'''DEPRECATED''' |
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if self.lock: |
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self.lock.release() |
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self.lock = None |
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self.respond("") |
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def do_branches(self): |
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arg, nodes = self.getarg() |
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nodes = map(bin, nodes.split(" ")) |
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r = [] |
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for b in self.repo.branches(nodes): |
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r.append(" ".join(map(hex, b)) + "\n") |
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self.respond("".join(r)) |
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def do_between(self): |
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arg, pairs = self.getarg() |
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pairs = [map(bin, p.split("-")) for p in pairs.split(" ")] |
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r = [] |
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for b in self.repo.between(pairs): |
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r.append(" ".join(map(hex, b)) + "\n") |
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self.respond("".join(r)) |
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def do_changegroup(self): |
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nodes = [] |
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arg, roots = self.getarg() |
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nodes = map(bin, roots.split(" ")) |
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cg = self.repo.changegroup(nodes, 'serve') |
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while True: |
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d = cg.read(4096) |
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if not d: |
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break |
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self.fout.write(d) |
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self.fout.flush() |
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def do_changegroupsubset(self): |
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bases = [] |
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heads = [] |
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argmap = dict([self.getarg(), self.getarg()]) |
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bases = [bin(n) for n in argmap['bases'].split(' ')] |
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heads = [bin(n) for n in argmap['heads'].split(' ')] |
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cg = self.repo.changegroupsubset(bases, heads, 'serve') |
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while True: |
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d = cg.read(4096) |
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if not d: |
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break |
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self.fout.write(d) |
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self.fout.flush() |
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def do_addchangegroup(self): |
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'''DEPRECATED''' |
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if not self.lock: |
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self.respond("not locked") |
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return |
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self.respond("") |
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r = self.repo.addchangegroup(self.fin, 'serve', self.client_url()) |
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self.respond(str(r)) |
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def client_url(self): |
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client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0] |
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return 'remote:ssh:' + client |
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def do_unbundle(self): |
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their_heads = self.getarg()[1].split() |
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def check_heads(): |
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heads = map(hex, self.repo.heads()) |
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return their_heads == [hex('force')] or their_heads == heads |
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# fail early if possible |
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if not check_heads(): |
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self.respond(_('unsynced changes')) |
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return |
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self.respond('') |
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# write bundle data to temporary file because it can be big |
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tempname = fp = None |
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try: |
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fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-') |
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fp = os.fdopen(fd, 'wb+') |
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count = int(self.fin.readline()) |
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while count: |
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fp.write(self.fin.read(count)) |
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count = int(self.fin.readline()) |
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was_locked = self.lock is not None |
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if not was_locked: |
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self.lock = self.repo.lock() |
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try: |
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184 |
if not check_heads(): |
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185 |
# someone else committed/pushed/unbundled while we |
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186 |
# were transferring data |
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187 |
self.respond(_('unsynced changes')) |
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188 |
return |
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189 |
self.respond('') |
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190 |
|
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191 |
# push can proceed |
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192 |
|
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193 |
fp.seek(0) |
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194 |
r = self.repo.addchangegroup(fp, 'serve', self.client_url()) |
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195 |
self.respond(str(r)) |
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196 |
finally: |
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197 |
if not was_locked: |
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198 |
self.lock.release() |
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199 |
self.lock = None |
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200 |
finally: |
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201 |
if fp is not None: |
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202 |
fp.close() |
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203 |
if tempname is not None: |
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204 |
os.unlink(tempname) |
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205 |
|
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206 |
def do_stream_out(self): |
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207 |
for chunk in streamclone.stream_out(self.repo): |
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208 |
self.fout.write(chunk) |
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209 |
self.fout.flush() |