| # sshpeer.py - ssh repository proxy class for mercurial |
| # |
| # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
| # |
| # This software may be used and distributed according to the terms of the |
| # GNU General Public License version 2 or any later version. |
| |
| import re |
| from i18n import _ |
| import util, error, wireproto |
| |
| class remotelock(object): |
| def __init__(self, repo): |
| self.repo = repo |
| def release(self): |
| self.repo.unlock() |
| self.repo = None |
| def __del__(self): |
| if self.repo: |
| self.release() |
| |
| def _serverquote(s): |
| '''quote a string for the remote shell ... which we assume is sh''' |
| if re.match('[a-zA-Z0-9@%_+=:,./-]*$', s): |
| return s |
| return "'%s'" % s.replace("'", "'\\''") |
| |
| class sshpeer(wireproto.wirepeer): |
| def __init__(self, ui, path, create=False): |
| self._url = path |
| self.ui = ui |
| self.pipeo = self.pipei = self.pipee = None |
| |
| u = util.url(path, parsequery=False, parsefragment=False) |
| if u.scheme != 'ssh' or not u.host or u.path is None: |
| self._abort(error.RepoError(_("couldn't parse location %s") % path)) |
| |
| self.user = u.user |
| if u.passwd is not None: |
| self._abort(error.RepoError(_("password in URL not supported"))) |
| self.host = u.host |
| self.port = u.port |
| self.path = u.path or "." |
| |
| sshcmd = self.ui.config("ui", "ssh", "ssh") |
| remotecmd = self.ui.config("ui", "remotecmd", "hg") |
| |
| args = util.sshargs(sshcmd, self.host, self.user, self.port) |
| |
| if create: |
| cmd = '%s %s %s' % (sshcmd, args, |
| util.shellquote("%s init %s" % |
| (_serverquote(remotecmd), _serverquote(self.path)))) |
| ui.note(_('running %s\n') % cmd) |
| res = util.system(cmd) |
| if res != 0: |
| self._abort(error.RepoError(_("could not create remote repo"))) |
| |
| self.validate_repo(ui, sshcmd, args, remotecmd) |
| |
| def url(self): |
| return self._url |
| |
| def validate_repo(self, ui, sshcmd, args, remotecmd): |
| # cleanup up previous run |
| self.cleanup() |
| |
| cmd = '%s %s %s' % (sshcmd, args, |
| util.shellquote("%s -R %s serve --stdio" % |
| (_serverquote(remotecmd), _serverquote(self.path)))) |
| ui.note(_('running %s\n') % cmd) |
| cmd = util.quotecommand(cmd) |
| |
| # while self.subprocess isn't used, having it allows the subprocess to |
| # to clean up correctly later |
| self.pipeo, self.pipei, self.pipee, self.subprocess = util.popen4(cmd) |
| |
| # skip any noise generated by remote shell |
| self._callstream("hello") |
| r = self._callstream("between", pairs=("%s-%s" % ("0"*40, "0"*40))) |
| lines = ["", "dummy"] |
| max_noise = 500 |
| while lines[-1] and max_noise: |
| l = r.readline() |
| self.readerr() |
| if lines[-1] == "1\n" and l == "\n": |
| break |
| if l: |
| ui.debug("remote: ", l) |
| lines.append(l) |
| max_noise -= 1 |
| else: |
| self._abort(error.RepoError(_('no suitable response from ' |
| 'remote hg'))) |
| |
| self._caps = set() |
| for l in reversed(lines): |
| if l.startswith("capabilities:"): |
| self._caps.update(l[:-1].split(":")[1].split()) |
| break |
| |
| def _capabilities(self): |
| return self._caps |
| |
| def readerr(self): |
| while True: |
| size = util.fstat(self.pipee).st_size |
| if size == 0: |
| break |
| s = self.pipee.read(size) |
| if not s: |
| break |
| for l in s.splitlines(): |
| self.ui.status(_("remote: "), l, '\n') |
| |
| def _abort(self, exception): |
| self.cleanup() |
| raise exception |
| |
| def cleanup(self): |
| if self.pipeo is None: |
| return |
| self.pipeo.close() |
| self.pipei.close() |
| try: |
| # read the error descriptor until EOF |
| for l in self.pipee: |
| self.ui.status(_("remote: "), l) |
| except (IOError, ValueError): |
| pass |
| self.pipee.close() |
| |
| __del__ = cleanup |
| |
| def _callstream(self, cmd, **args): |
| self.ui.debug("sending %s command\n" % cmd) |
| self.pipeo.write("%s\n" % cmd) |
| _func, names = wireproto.commands[cmd] |
| keys = names.split() |
| wireargs = {} |
| for k in keys: |
| if k == '*': |
| wireargs['*'] = args |
| break |
| else: |
| wireargs[k] = args[k] |
| del args[k] |
| for k, v in sorted(wireargs.iteritems()): |
| self.pipeo.write("%s %d\n" % (k, len(v))) |
| if isinstance(v, dict): |
| for dk, dv in v.iteritems(): |
| self.pipeo.write("%s %d\n" % (dk, len(dv))) |
| self.pipeo.write(dv) |
| else: |
| self.pipeo.write(v) |
| self.pipeo.flush() |
| |
| return self.pipei |
| |
| def _call(self, cmd, **args): |
| self._callstream(cmd, **args) |
| return self._recv() |
| |
| def _callpush(self, cmd, fp, **args): |
| r = self._call(cmd, **args) |
| if r: |
| return '', r |
| while True: |
| d = fp.read(4096) |
| if not d: |
| break |
| self._send(d) |
| self._send("", flush=True) |
| r = self._recv() |
| if r: |
| return '', r |
| return self._recv(), '' |
| |
| def _decompress(self, stream): |
| return stream |
| |
| def _recv(self): |
| l = self.pipei.readline() |
| if l == '\n': |
| err = [] |
| while True: |
| line = self.pipee.readline() |
| if line == '-\n': |
| break |
| err.extend([line]) |
| if len(err) > 0: |
| # strip the trailing newline added to the last line server-side |
| err[-1] = err[-1][:-1] |
| self._abort(error.OutOfBandError(*err)) |
| self.readerr() |
| try: |
| l = int(l) |
| except ValueError: |
| self._abort(error.ResponseError(_("unexpected response:"), l)) |
| return self.pipei.read(l) |
| |
| def _send(self, data, flush=False): |
| self.pipeo.write("%d\n" % len(data)) |
| if data: |
| self.pipeo.write(data) |
| if flush: |
| self.pipeo.flush() |
| self.readerr() |
| |
| def lock(self): |
| self._call("lock") |
| return remotelock(self) |
| |
| def unlock(self): |
| self._call("unlock") |
| |
| def addchangegroup(self, cg, source, url, lock=None): |
| '''Send a changegroup to the remote server. Return an integer |
| similar to unbundle(). DEPRECATED, since it requires locking the |
| remote.''' |
| d = self._call("addchangegroup") |
| if d: |
| self._abort(error.RepoError(_("push refused: %s") % d)) |
| while True: |
| d = cg.read(4096) |
| if not d: |
| break |
| self.pipeo.write(d) |
| self.readerr() |
| |
| self.pipeo.flush() |
| |
| self.readerr() |
| r = self._recv() |
| if not r: |
| return 1 |
| try: |
| return int(r) |
| except ValueError: |
| self._abort(error.ResponseError(_("unexpected response:"), r)) |
| |
| instance = sshpeer |
