mercurial/sshpeer.py
author Gregory Szorc <gregory.szorc@gmail.com>
Wed, 07 Feb 2018 20:24:22 -0800
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parent 36043 223ed0b53f08
child 36216 7218e93ade47
permissions -rw-r--r--
wireprotoserver: rename _client to client (API) This method is called in wireproto.py. It should be part of the public API/interface. .. api:: The ``_client()`` method of the wire protocol handler interface has been renamed to ``client()``. Differential Revision: https://phab.mercurial-scm.org/D2084
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# sshpeer.py - ssh repository proxy class for mercurial
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import re
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import uuid
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from .i18n import _
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from . import (
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    error,
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    pycompat,
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    util,
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    wireproto,
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    wireprotoserver,
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)
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def _serverquote(s):
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    """quote a string for the remote shell ... which we assume is sh"""
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    if not s:
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        return s
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    if re.match('[a-zA-Z0-9@%_+=:,./-]*$', s):
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        return s
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    return "'%s'" % s.replace("'", "'\\''")
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def _forwardoutput(ui, pipe):
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    """display all data currently available on pipe as remote output.
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    This is non blocking."""
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    s = util.readpipe(pipe)
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    if s:
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        for l in s.splitlines():
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            ui.status(_("remote: "), l, '\n')
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class doublepipe(object):
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    """Operate a side-channel pipe in addition of a main one
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    The side-channel pipe contains server output to be forwarded to the user
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    input. The double pipe will behave as the "main" pipe, but will ensure the
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    content of the "side" pipe is properly processed while we wait for blocking
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    call on the "main" pipe.
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    If large amounts of data are read from "main", the forward will cease after
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    the first bytes start to appear. This simplifies the implementation
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    without affecting actual output of sshpeer too much as we rarely issue
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    large read for data not yet emitted by the server.
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    The main pipe is expected to be a 'bufferedinputpipe' from the util module
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    that handle all the os specific bits. This class lives in this module
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    because it focus on behavior specific to the ssh protocol."""
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    def __init__(self, ui, main, side):
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        self._ui = ui
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        self._main = main
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        self._side = side
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    def _wait(self):
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        """wait until some data are available on main or side
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        return a pair of boolean (ismainready, issideready)
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        (This will only wait for data if the setup is supported by `util.poll`)
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        """
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        if getattr(self._main, 'hasbuffer', False): # getattr for classic pipe
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            return (True, True) # main has data, assume side is worth poking at.
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        fds = [self._main.fileno(), self._side.fileno()]
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        try:
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            act = util.poll(fds)
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        except NotImplementedError:
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            # non supported yet case, assume all have data.
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            act = fds
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        return (self._main.fileno() in act, self._side.fileno() in act)
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    def write(self, data):
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        return self._call('write', data)
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    def read(self, size):
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        r = self._call('read', size)
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        if size != 0 and not r:
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            # We've observed a condition that indicates the
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            # stdout closed unexpectedly. Check stderr one
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            # more time and snag anything that's there before
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            # letting anyone know the main part of the pipe
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            # closed prematurely.
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            _forwardoutput(self._ui, self._side)
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        return r
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    def readline(self):
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        return self._call('readline')
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    def _call(self, methname, data=None):
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        """call <methname> on "main", forward output of "side" while blocking
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        """
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        # data can be '' or 0
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        if (data is not None and not data) or self._main.closed:
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            _forwardoutput(self._ui, self._side)
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            return ''
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        while True:
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            mainready, sideready = self._wait()
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            if sideready:
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                _forwardoutput(self._ui, self._side)
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            if mainready:
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                meth = getattr(self._main, methname)
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                if data is None:
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                    return meth()
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                else:
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                    return meth(data)
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    def close(self):
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        return self._main.close()
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    def flush(self):
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        return self._main.flush()
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def _cleanuppipes(ui, pipei, pipeo, pipee):
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    """Clean up pipes used by an SSH connection."""
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    if pipeo:
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        pipeo.close()
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   123
    if pipei:
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        pipei.close()
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    if pipee:
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        # Try to read from the err descriptor until EOF.
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        try:
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            for l in pipee:
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                ui.status(_('remote: '), l)
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        except (IOError, ValueError):
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            pass
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        pipee.close()
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def _makeconnection(ui, sshcmd, args, remotecmd, path, sshenv=None):
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    """Create an SSH connection to a server.
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    Returns a tuple of (process, stdin, stdout, stderr) for the
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    spawned process.
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    """
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    cmd = '%s %s %s' % (
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        sshcmd,
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        args,
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        util.shellquote('%s -R %s serve --stdio' % (
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            _serverquote(remotecmd), _serverquote(path))))
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    ui.debug('running %s\n' % cmd)
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    cmd = util.quotecommand(cmd)
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    # no buffer allow the use of 'select'
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    # feel free to remove buffering and select usage when we ultimately
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    # move to threading.
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    stdin, stdout, stderr, proc = util.popen4(cmd, bufsize=0, env=sshenv)
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    stdout = doublepipe(ui, util.bufferedinputpipe(stdout), stderr)
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    stdin = doublepipe(ui, stdin, stderr)
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    return proc, stdin, stdout, stderr
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def _performhandshake(ui, stdin, stdout, stderr):
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    def badresponse():
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        msg = _('no suitable response from remote hg')
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        hint = ui.config('ui', 'ssherrorhint')
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        raise error.RepoError(msg, hint=hint)
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    # The handshake consists of sending wire protocol commands in reverse
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    # order of protocol implementation and then sniffing for a response
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    # to one of them.
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    #
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    # Those commands (from oldest to newest) are:
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    #
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    # ``between``
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    #   Asks for the set of revisions between a pair of revisions. Command
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    #   present in all Mercurial server implementations.
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    #
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    # ``hello``
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    #   Instructs the server to advertise its capabilities. Introduced in
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    #   Mercurial 0.9.1.
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    #
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    # ``upgrade``
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    #   Requests upgrade from default transport protocol version 1 to
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    #   a newer version. Introduced in Mercurial 4.6 as an experimental
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    #   feature.
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    #
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    # The ``between`` command is issued with a request for the null
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    # range. If the remote is a Mercurial server, this request will
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    # generate a specific response: ``1\n\n``. This represents the
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    # wire protocol encoded value for ``\n``. We look for ``1\n\n``
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    # in the output stream and know this is the response to ``between``
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    # and we're at the end of our handshake reply.
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    #
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    # The response to the ``hello`` command will be a line with the
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    # length of the value returned by that command followed by that
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    # value. If the server doesn't support ``hello`` (which should be
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    # rare), that line will be ``0\n``. Otherwise, the value will contain
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    # RFC 822 like lines. Of these, the ``capabilities:`` line contains
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    # the capabilities of the server.
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    #
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    # The ``upgrade`` command isn't really a command in the traditional
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    # sense of version 1 of the transport because it isn't using the
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   202
    # proper mechanism for formatting insteads: instead, it just encodes
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    # arguments on the line, delimited by spaces.
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   204
    #
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    # The ``upgrade`` line looks like ``upgrade <token> <capabilities>``.
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   206
    # If the server doesn't support protocol upgrades, it will reply to
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    # this line with ``0\n``. Otherwise, it emits an
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    # ``upgraded <token> <protocol>`` line to both stdout and stderr.
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    # Content immediately following this line describes additional
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    # protocol and server state.
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   211
    #
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    # In addition to the responses to our command requests, the server
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    # may emit "banner" output on stdout. SSH servers are allowed to
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    # print messages to stdout on login. Issuing commands on connection
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    # allows us to flush this banner output from the server by scanning
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    # for output to our well-known ``between`` command. Of course, if
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    # the banner contains ``1\n\n``, this will throw off our detection.
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   218
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    requestlog = ui.configbool('devel', 'debug.peer-request')
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   220
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   221
    # Generate a random token to help identify responses to version 2
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    # upgrade request.
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    token = pycompat.sysbytes(str(uuid.uuid4()))
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   224
    upgradecaps = [
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        ('proto', wireprotoserver.SSHV2),
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    ]
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    upgradecaps = util.urlreq.urlencode(upgradecaps)
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   228
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    try:
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        pairsarg = '%s-%s' % ('0' * 40, '0' * 40)
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        handshake = [
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            'hello\n',
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            'between\n',
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            'pairs %d\n' % len(pairsarg),
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            pairsarg,
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        ]
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   237
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        # Request upgrade to version 2 if configured.
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        if ui.configbool('experimental', 'sshpeer.advertise-v2'):
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            ui.debug('sending upgrade request: %s %s\n' % (token, upgradecaps))
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            handshake.insert(0, 'upgrade %s %s\n' % (token, upgradecaps))
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   242
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        if requestlog:
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            ui.debug('devel-peer-request: hello\n')
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   245
        ui.debug('sending hello command\n')
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   246
        if requestlog:
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            ui.debug('devel-peer-request: between\n')
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            ui.debug('devel-peer-request:   pairs: %d bytes\n' % len(pairsarg))
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   249
        ui.debug('sending between command\n')
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diff changeset
   250
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diff changeset
   251
        stdin.write(''.join(handshake))
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
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diff changeset
   252
        stdin.flush()
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diff changeset
   253
    except IOError:
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
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diff changeset
   254
        badresponse()
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
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diff changeset
   255
35976
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diff changeset
   256
    # Assume version 1 of wire protocol by default.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   257
    protoname = wireprotoserver.SSHV1
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   258
    reupgraded = re.compile(b'^upgraded %s (.*)$' % re.escape(token))
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diff changeset
   259
35938
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diff changeset
   260
    lines = ['', 'dummy']
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diff changeset
   261
    max_noise = 500
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diff changeset
   262
    while lines[-1] and max_noise:
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diff changeset
   263
        try:
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
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diff changeset
   264
            l = stdout.readline()
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diff changeset
   265
            _forwardoutput(ui, stderr)
35976
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   266
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diff changeset
   267
            # Look for reply to protocol upgrade request. It has a token
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diff changeset
   268
            # in it, so there should be no false positives.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   269
            m = reupgraded.match(l)
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diff changeset
   270
            if m:
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diff changeset
   271
                protoname = m.group(1)
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   272
                ui.debug('protocol upgraded to %s\n' % protoname)
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diff changeset
   273
                # If an upgrade was handled, the ``hello`` and ``between``
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   274
                # requests are ignored. The next output belongs to the
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   275
                # protocol, so stop scanning lines.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   276
                break
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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parents: 35940
diff changeset
   277
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   278
            # Otherwise it could be a banner, ``0\n`` response if server
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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   279
            # doesn't support upgrade.
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diff changeset
   280
35938
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diff changeset
   281
            if lines[-1] == '1\n' and l == '\n':
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
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diff changeset
   282
                break
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diff changeset
   283
            if l:
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diff changeset
   284
                ui.debug('remote: ', l)
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   285
            lines.append(l)
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diff changeset
   286
            max_noise -= 1
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diff changeset
   287
        except IOError:
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diff changeset
   288
            badresponse()
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diff changeset
   289
    else:
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diff changeset
   290
        badresponse()
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diff changeset
   291
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diff changeset
   292
    caps = set()
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diff changeset
   293
35976
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   294
    # For version 1, we should see a ``capabilities`` line in response to the
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   295
    # ``hello`` command.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   296
    if protoname == wireprotoserver.SSHV1:
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   297
        for l in reversed(lines):
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   298
            # Look for response to ``hello`` command. Scan from the back so
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   299
            # we don't misinterpret banner output as the command reply.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   300
            if l.startswith('capabilities:'):
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   301
                caps.update(l[:-1].split(':')[1].split())
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   302
                break
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   303
    elif protoname == wireprotoserver.SSHV2:
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   304
        # We see a line with number of bytes to follow and then a value
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   305
        # looking like ``capabilities: *``.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   306
        line = stdout.readline()
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   307
        try:
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   308
            valuelen = int(line)
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   309
        except ValueError:
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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parents: 35940
diff changeset
   310
            badresponse()
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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parents: 35940
diff changeset
   311
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   312
        capsline = stdout.read(valuelen)
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   313
        if not capsline.startswith('capabilities: '):
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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parents: 35940
diff changeset
   314
            badresponse()
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35940
diff changeset
   315
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   316
        caps.update(capsline.split(':')[1].split())
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   317
        # Trailing newline.
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   318
        stdout.read(1)
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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parents: 35940
diff changeset
   319
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   320
    # Error if we couldn't find capabilities, this means:
35940
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35939
diff changeset
   321
    #
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35939
diff changeset
   322
    # 1. Remote isn't a Mercurial server
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35939
diff changeset
   323
    # 2. Remote is a <0.9.1 Mercurial server
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
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parents: 35939
diff changeset
   324
    # 3. Remote is a future Mercurial server that dropped ``hello``
35976
48a3a9283f09 sshpeer: initial definition and implementation of new SSH protocol
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diff changeset
   325
    #    and other attempted handshake mechanisms.
35940
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35939
diff changeset
   326
    if not caps:
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35939
diff changeset
   327
        badresponse()
556218e08e25 sshpeer: remove support for connecting to <0.9.1 servers (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35939
diff changeset
   328
35978
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   329
    return protoname, caps
35938
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   330
35977
625038cb4b1d sshpeer: rename sshpeer class to sshv1peer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35976
diff changeset
   331
class sshv1peer(wireproto.wirepeer):
35938
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
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parents: 35937
diff changeset
   332
    def __init__(self, ui, url, proc, stdin, stdout, stderr, caps):
35936
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   333
        """Create a peer from an existing SSH connection.
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   334
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   335
        ``proc`` is a handle on the underlying SSH process.
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   336
        ``stdin``, ``stdout``, and ``stderr`` are handles on the stdio
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   337
        pipes for that process.
35938
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   338
        ``caps`` is a set of capabilities supported by the remote.
35936
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   339
        """
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
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parents: 35935
diff changeset
   340
        self._url = url
33804
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   341
        self._ui = ui
35935
00b9e26d727b sshpeer: establish SSH connection before class instantiation
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35934
diff changeset
   342
        # self._subprocess is unused. Keeping a handle on the process
00b9e26d727b sshpeer: establish SSH connection before class instantiation
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35934
diff changeset
   343
        # holds a reference and prevents it from being garbage collected.
35936
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   344
        self._subprocess = proc
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   345
        self._pipeo = stdin
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   346
        self._pipei = stdout
f8f034344b39 sshpeer: clean up API for sshpeer.__init__ (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35935
diff changeset
   347
        self._pipee = stderr
35938
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   348
        self._caps = caps
2549
e1831f06eef1 Added ability to clone from a local repository to a (new) remote one.
Sean Meiners <sean.meiners@linspire.com>
parents: 2484
diff changeset
   349
33804
1f8460b55986 sshpeer: use peer interface
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diff changeset
   350
    # Begin of _basepeer interface.
1f8460b55986 sshpeer: use peer interface
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diff changeset
   351
1f8460b55986 sshpeer: use peer interface
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diff changeset
   352
    @util.propertycache
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   353
    def ui(self):
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   354
        return self._ui
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   355
2673
109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
   356
    def url(self):
109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
   357
        return self._url
109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
   358
33804
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   359
    def local(self):
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   360
        return None
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   361
1f8460b55986 sshpeer: use peer interface
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diff changeset
   362
    def peer(self):
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   363
        return self
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   364
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   365
    def canpush(self):
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   366
        return True
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   367
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   368
    def close(self):
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   369
        pass
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   370
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   371
    # End of _basepeer interface.
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   372
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   373
    # Begin of _basewirecommands interface.
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   374
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   375
    def capabilities(self):
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   376
        return self._caps
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   377
1f8460b55986 sshpeer: use peer interface
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parents: 33768
diff changeset
   378
    # End of _basewirecommands interface.
1f8460b55986 sshpeer: use peer interface
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33768
diff changeset
   379
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   380
    def _readerr(self):
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   381
        _forwardoutput(self.ui, self._pipee)
624
876333a295ff Add an sshrepository class and hg serve --stdio
Matt Mackall <mpm@selenic.com>
parents: 623
diff changeset
   382
11586
ddaaaa23bb8f protocol: move basic ssh client commands to wirerepository
Matt Mackall <mpm@selenic.com>
parents: 11369
diff changeset
   383
    def _abort(self, exception):
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   384
        self._cleanup()
11586
ddaaaa23bb8f protocol: move basic ssh client commands to wirerepository
Matt Mackall <mpm@selenic.com>
parents: 11369
diff changeset
   385
        raise exception
ddaaaa23bb8f protocol: move basic ssh client commands to wirerepository
Matt Mackall <mpm@selenic.com>
parents: 11369
diff changeset
   386
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   387
    def _cleanup(self):
35933
805edf16e8e0 sshpeer: extract pipe cleanup logic to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35932
diff changeset
   388
        _cleanuppipes(self.ui, self._pipei, self._pipeo, self._pipee)
624
876333a295ff Add an sshrepository class and hg serve --stdio
Matt Mackall <mpm@selenic.com>
parents: 623
diff changeset
   389
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   390
    __del__ = _cleanup
3034
2b0bc36a48d8 sshrepo: flush stderr before connecting to the hg server
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 2859
diff changeset
   391
28438
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   392
    def _submitbatch(self, req):
29733
bb04f96df51c wireproto: consolidate code for obtaining "cmds" argument value
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29727
diff changeset
   393
        rsp = self._callstream("batch", cmds=wireproto.encodebatchcmds(req))
28438
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   394
        available = self._getamount()
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   395
        # TODO this response parsing is probably suboptimal for large
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   396
        # batches with large responses.
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   397
        toread = min(available, 1024)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   398
        work = rsp.read(toread)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   399
        available -= toread
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   400
        chunk = work
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   401
        while chunk:
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   402
            while ';' in work:
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   403
                one, work = work.split(';', 1)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   404
                yield wireproto.unescapearg(one)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   405
            toread = min(available, 1024)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   406
            chunk = rsp.read(toread)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   407
            available -= toread
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   408
            work += chunk
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   409
        yield wireproto.unescapearg(work)
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   410
11589
e8d22fe2ddab protocol: clean up call-like functions in http and ssh clients
Matt Mackall <mpm@selenic.com>
parents: 11588
diff changeset
   411
    def _callstream(self, cmd, **args):
33100
05906b8e1d23 py3: use pycompat.byteskwargs() to convert kwargs' keys to bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents: 32062
diff changeset
   412
        args = pycompat.byteskwargs(args)
35699
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   413
        if (self.ui.debugflag
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   414
            and self.ui.configbool('devel', 'debug.peer-request')):
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   415
            dbg = self.ui.debug
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   416
            line = 'devel-peer-request: %s\n'
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   417
            dbg(line % cmd)
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   418
            for key, value in sorted(args.items()):
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   419
                if not isinstance(value, dict):
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   420
                    dbg(line % '  %s: %d bytes' % (key, len(value)))
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   421
                else:
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   422
                    for dk, dv in sorted(value.items()):
f7ef49e44d7c sshpeer: add support for request tracing
Boris Feld <boris.feld@octobus.net>
parents: 35459
diff changeset
   423
                        dbg(line % '  %s-%s: %d' % (key, dk, len(dv)))
9467
4c041f1ee1b4 do not attempt to translate ui.debug output
Martin Geisler <mg@lazybytes.net>
parents: 8563
diff changeset
   424
        self.ui.debug("sending %s command\n" % cmd)
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   425
        self._pipeo.write("%s\n" % cmd)
13721
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   426
        _func, names = wireproto.commands[cmd]
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   427
        keys = names.split()
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   428
        wireargs = {}
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   429
        for k in keys:
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   430
            if k == '*':
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   431
                wireargs['*'] = args
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   432
                break
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   433
            else:
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   434
                wireargs[k] = args[k]
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   435
                del args[k]
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   436
        for k, v in sorted(wireargs.iteritems()):
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   437
            self._pipeo.write("%s %d\n" % (k, len(v)))
13721
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   438
            if isinstance(v, dict):
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   439
                for dk, dv in v.iteritems():
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   440
                    self._pipeo.write("%s %d\n" % (dk, len(dv)))
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   441
                    self._pipeo.write(dv)
13721
3458c15ab2f0 wireproto: fix handling of '*' args for HTTP and SSH
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 13464
diff changeset
   442
            else:
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   443
                self._pipeo.write(v)
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   444
        self._pipeo.flush()
624
876333a295ff Add an sshrepository class and hg serve --stdio
Matt Mackall <mpm@selenic.com>
parents: 623
diff changeset
   445
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   446
        return self._pipei
624
876333a295ff Add an sshrepository class and hg serve --stdio
Matt Mackall <mpm@selenic.com>
parents: 623
diff changeset
   447
20905
167047ba3cfa wireproto: drop the _decompress method in favor a new call type
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20794
diff changeset
   448
    def _callcompressable(self, cmd, **args):
167047ba3cfa wireproto: drop the _decompress method in favor a new call type
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20794
diff changeset
   449
        return self._callstream(cmd, **args)
167047ba3cfa wireproto: drop the _decompress method in favor a new call type
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20794
diff changeset
   450
11589
e8d22fe2ddab protocol: clean up call-like functions in http and ssh clients
Matt Mackall <mpm@selenic.com>
parents: 11588
diff changeset
   451
    def _call(self, cmd, **args):
e8d22fe2ddab protocol: clean up call-like functions in http and ssh clients
Matt Mackall <mpm@selenic.com>
parents: 11588
diff changeset
   452
        self._callstream(cmd, **args)
5978
7939c71f3132 sshrepo: be more careful while reading data
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5293
diff changeset
   453
        return self._recv()
7939c71f3132 sshrepo: be more careful while reading data
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5293
diff changeset
   454
11592
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   455
    def _callpush(self, cmd, fp, **args):
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   456
        r = self._call(cmd, **args)
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   457
        if r:
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   458
            return '', r
29727
0dbd788a2dfd sshpeer: use `iter(callable, sentinel)` instead of while True
Augie Fackler <augie@google.com>
parents: 29389
diff changeset
   459
        for d in iter(lambda: fp.read(4096), ''):
11592
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   460
            self._send(d)
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   461
        self._send("", flush=True)
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   462
        r = self._recv()
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   463
        if r:
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   464
            return '', r
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   465
        return self._recv(), ''
26e0782b8380 protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents: 11591
diff changeset
   466
21073
83ce71ef7804 sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20905
diff changeset
   467
    def _calltwowaystream(self, cmd, fp, **args):
83ce71ef7804 sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20905
diff changeset
   468
        r = self._call(cmd, **args)
83ce71ef7804 sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20905
diff changeset
   469
        if r:
83ce71ef7804 sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20905
diff changeset
   470
            # XXX needs to be made better
29389
98e8313dcd9e i18n: translate abort messages
liscju <piotr.listkiewicz@gmail.com>
parents: 28438
diff changeset
   471
            raise error.Abort(_('unexpected remote reply: %s') % r)
29727
0dbd788a2dfd sshpeer: use `iter(callable, sentinel)` instead of while True
Augie Fackler <augie@google.com>
parents: 29389
diff changeset
   472
        for d in iter(lambda: fp.read(4096), ''):
21073
83ce71ef7804 sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20905
diff changeset
   473
            self._send(d)
83ce71ef7804 sshpeer: add implementation of _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20905
diff changeset
   474
        self._send("", flush=True)
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   475
        return self._pipei
11591
0d9cb3f3b0a1 protocol: unify client changegroup methods
Matt Mackall <mpm@selenic.com>
parents: 11590
diff changeset
   476
28438
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   477
    def _getamount(self):
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   478
        l = self._pipei.readline()
15017
f4522df38c65 wireproto: add out-of-band error class to allow remote repo to report errors
Andrew Pritchard <andrewp@fogcreek.com>
parents: 14537
diff changeset
   479
        if l == '\n':
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   480
            self._readerr()
25243
d65243d28749 sshpeer: break "OutOfBandError" feature for ssh (BC)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 23684
diff changeset
   481
            msg = _('check previous remote output')
d65243d28749 sshpeer: break "OutOfBandError" feature for ssh (BC)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 23684
diff changeset
   482
            self._abort(error.OutOfBandError(hint=msg))
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   483
        self._readerr()
646
342927da4f4c Show remote client output with "remote:"
Matt Mackall <mpm@selenic.com>
parents: 644
diff changeset
   484
        try:
28438
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   485
            return int(l)
14004
97ed99d1f419 eliminate various naked except clauses
Idan Kamara <idankk86@gmail.com>
parents: 13827
diff changeset
   486
        except ValueError:
11590
0b15aee0a306 protocol: convert some ssh abort calls
Matt Mackall <mpm@selenic.com>
parents: 11589
diff changeset
   487
            self._abort(error.ResponseError(_("unexpected response:"), l))
28438
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   488
48fd02dac1d4 wireproto: make iterbatcher behave streamily over http(s)
Augie Fackler <augie@google.com>
parents: 27798
diff changeset
   489
    def _recv(self):
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   490
        return self._pipei.read(self._getamount())
5978
7939c71f3132 sshrepo: be more careful while reading data
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5293
diff changeset
   491
7939c71f3132 sshrepo: be more careful while reading data
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5293
diff changeset
   492
    def _send(self, data, flush=False):
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   493
        self._pipeo.write("%d\n" % len(data))
5978
7939c71f3132 sshrepo: be more careful while reading data
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5293
diff changeset
   494
        if data:
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   495
            self._pipeo.write(data)
5978
7939c71f3132 sshrepo: be more careful while reading data
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5293
diff changeset
   496
        if flush:
33768
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   497
            self._pipeo.flush()
82d564d5ac4f sshpeer: make instance attributes and methods internal
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33737
diff changeset
   498
        self._readerr()
2612
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2549
diff changeset
   499
35978
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   500
class sshv2peer(sshv1peer):
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   501
    """A peer that speakers version 2 of the transport protocol."""
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   502
    # Currently version 2 is identical to version 1 post handshake.
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   503
    # And handshake is performed before the peer is instantiated. So
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   504
    # we need no custom code.
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   505
35928
b0d2885c5945 sshpeer: make "instance" a function
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35699
diff changeset
   506
def instance(ui, path, create):
35931
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   507
    """Create an SSH peer.
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   508
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   509
    The returned object conforms to the ``wireproto.wirepeer`` interface.
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   510
    """
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   511
    u = util.url(path, parsequery=False, parsefragment=False)
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   512
    if u.scheme != 'ssh' or not u.host or u.path is None:
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   513
        raise error.RepoError(_("couldn't parse location %s") % path)
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   514
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   515
    util.checksafessh(path)
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   516
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   517
    if u.passwd is not None:
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   518
        raise error.RepoError(_('password in URL not supported'))
b202d360d2a4 sshpeer: move URL validation out of sshpeer.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35928
diff changeset
   519
35932
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   520
    sshcmd = ui.config('ui', 'ssh')
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   521
    remotecmd = ui.config('ui', 'remotecmd')
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   522
    sshaddenv = dict(ui.configitems('sshenv'))
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   523
    sshenv = util.shellenviron(sshaddenv)
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   524
    remotepath = u.path or '.'
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   525
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   526
    args = util.sshargs(sshcmd, u.host, u.user, u.port)
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   527
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   528
    if create:
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   529
        cmd = '%s %s %s' % (sshcmd, args,
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   530
            util.shellquote('%s init %s' %
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   531
                (_serverquote(remotecmd), _serverquote(remotepath))))
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   532
        ui.debug('running %s\n' % cmd)
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   533
        res = ui.system(cmd, blockedtag='sshpeer', environ=sshenv)
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   534
        if res != 0:
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   535
            raise error.RepoError(_('could not create remote repo'))
31449baf0936 sshpeer: move ssh command and repo creation logic out of __init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35931
diff changeset
   536
35935
00b9e26d727b sshpeer: establish SSH connection before class instantiation
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35934
diff changeset
   537
    proc, stdin, stdout, stderr = _makeconnection(ui, sshcmd, args, remotecmd,
00b9e26d727b sshpeer: establish SSH connection before class instantiation
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35934
diff changeset
   538
                                                  remotepath, sshenv)
00b9e26d727b sshpeer: establish SSH connection before class instantiation
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35934
diff changeset
   539
35938
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   540
    try:
35978
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   541
        protoname, caps = _performhandshake(ui, stdin, stdout, stderr)
35938
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   542
    except Exception:
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   543
        _cleanuppipes(ui, stdout, stdin, stderr)
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   544
        raise
80a2b8ae42a1 sshpeer: move handshake outside of sshpeer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35937
diff changeset
   545
35978
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   546
    if protoname == wireprotoserver.SSHV1:
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   547
        return sshv1peer(ui, path, proc, stdin, stdout, stderr, caps)
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   548
    elif protoname == wireprotoserver.SSHV2:
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   549
        return sshv2peer(ui, path, proc, stdin, stdout, stderr, caps)
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   550
    else:
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   551
        _cleanuppipes(ui, stdout, stdin, stderr)
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   552
        raise error.RepoError(_('unknown version of SSH protocol: %s') %
59e4a7781a36 sshpeer: implement peer for version 2 of wire protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35977
diff changeset
   553
                              protoname)