Mercurial > hg
view mercurial/sshserver.py @ 10364:de1e7099d100
dispatch: provide help for disabled extensions and commands
Before a command is declared unknown, each extension in hgext is searched,
starting with hgext.<cmdname>. If there's a matching command, a help message
suggests the appropriate extension and how to enable it.
Every extension could potentially be imported, but for cases like rebase,
relink, etc. only one extension is imported.
For the case of "hg help disabledext", if the extension is in hgext, the
extension description is read and a similar help suggestion is printed.
No extension import occurs.
author | Brodie Rao <me+hg@dackz.net> |
---|---|
date | Sun, 07 Feb 2010 14:01:43 +0100 |
parents | 08a0f04b56bd |
children | 04e1e6743809 |
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# 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 or any later version. from i18n import _ from node import bin, hex import streamclone, util, hook import os, sys, tempfile, urllib, copy class sshserver(object): caps = 'unbundle lookup changegroupsubset branchmap'.split() 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 = copy.copy(self.caps) 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 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-') fp = os.fdopen(fd, 'wb+') try: 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: fp.close() 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()