mercurial/sshrepo.py
author Adrian Buehlmann <adrian@cadifra.com>
Tue, 16 Mar 2010 17:39:12 +0100
branchstable
changeset 10709 67cb29dbb66e
parent 10282 08a0f04b56bd
child 11153 9936ed1d04f4
permissions -rw-r--r--
contrib/wix: fix product name to include version Without this, Mercurial is registered under the installed programs on Windows as just 'Mercurial', which is unusual for a program to do on Windows. Including the version in the registered product name registers the software in the Windows control panel of installed programs as, for example, 'Mercurial 1.5' (for 1.5), or as 'Mercurial 1.5.1032' for a stable 1.5+32-35893dcfd40c 'Mercurial 1.5.5080' for a unstable 1.5+80-1ee60e82333c when using http://bitbucket.org/tortoisehg/thg-winbuild to create daily builds. Furthermore, the install UI texts in the built installer database (MSI file) are more clear on what the user is about to install, as, for example, the text in the initial installer dialog now reads "The Setup Wizard will install Mercurial 1.5 on your computer" instead of just "The Setup Wizard will install Mercurial on your computer"

# sshrepo.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.

from node import bin, hex
from i18n import _
import repo, util, error, encoding
import re, urllib

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()

class sshrepository(repo.repository):
    def __init__(self, ui, path, create=0):
        self._url = path
        self.ui = ui

        m = re.match(r'^ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?$', path)
        if not m:
            self.abort(error.RepoError(_("couldn't parse location %s") % path))

        self.user = m.group(2)
        self.host = m.group(3)
        self.port = m.group(5)
        self.path = m.group(7) 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 init %s"'
            cmd = cmd % (sshcmd, args, remotecmd, 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 -R %s serve --stdio"'
        cmd = cmd % (sshcmd, args, remotecmd, self.path)

        cmd = util.quotecommand(cmd)
        ui.note(_('running %s\n') % cmd)
        self.pipeo, self.pipei, self.pipee = util.popen3(cmd)

        # skip any noise generated by remote shell
        self.do_cmd("hello")
        r = self.do_cmd("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.capabilities = set()
        for l in reversed(lines):
            if l.startswith("capabilities:"):
                self.capabilities.update(l[:-1].split(":")[1].split())
                break

    def readerr(self):
        while 1:
            size = util.fstat(self.pipee).st_size
            if size == 0:
                break
            l = self.pipee.readline()
            if not l:
                break
            self.ui.status(_("remote: "), l)

    def abort(self, exception):
        self.cleanup()
        raise exception

    def cleanup(self):
        try:
            self.pipeo.close()
            self.pipei.close()
            # read the error descriptor until EOF
            for l in self.pipee:
                self.ui.status(_("remote: "), l)
            self.pipee.close()
        except:
            pass

    __del__ = cleanup

    def do_cmd(self, cmd, **args):
        self.ui.debug("sending %s command\n" % cmd)
        self.pipeo.write("%s\n" % cmd)
        for k, v in args.iteritems():
            self.pipeo.write("%s %d\n" % (k, len(v)))
            self.pipeo.write(v)
        self.pipeo.flush()

        return self.pipei

    def call(self, cmd, **args):
        self.do_cmd(cmd, **args)
        return self._recv()

    def _recv(self):
        l = self.pipei.readline()
        self.readerr()
        try:
            l = int(l)
        except:
            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 lookup(self, key):
        self.requirecap('lookup', _('look up remote revision'))
        d = self.call("lookup", key=key)
        success, data = d[:-1].split(" ", 1)
        if int(success):
            return bin(data)
        else:
            self.abort(error.RepoError(data))

    def heads(self):
        d = self.call("heads")
        try:
            return map(bin, d[:-1].split(" "))
        except:
            self.abort(error.ResponseError(_("unexpected response:"), d))

    def branchmap(self):
        d = self.call("branchmap")
        try:
            branchmap = {}
            for branchpart in d.splitlines():
                branchheads = branchpart.split(' ')
                branchname = urllib.unquote(branchheads[0])
                # Earlier servers (1.3.x) send branch names in (their) local
                # charset. The best we can do is assume it's identical to our
                # own local charset, in case it's not utf-8.
                try:
                    branchname.decode('utf-8')
                except UnicodeDecodeError:
                    branchname = encoding.fromlocal(branchname)
                branchheads = [bin(x) for x in branchheads[1:]]
                branchmap[branchname] = branchheads
            return branchmap
        except:
            raise error.ResponseError(_("unexpected response:"), d)

    def branches(self, nodes):
        n = " ".join(map(hex, nodes))
        d = self.call("branches", nodes=n)
        try:
            br = [tuple(map(bin, b.split(" "))) for b in d.splitlines()]
            return br
        except:
            self.abort(error.ResponseError(_("unexpected response:"), d))

    def between(self, pairs):
        n = " ".join(["-".join(map(hex, p)) for p in pairs])
        d = self.call("between", pairs=n)
        try:
            p = [l and map(bin, l.split(" ")) or [] for l in d.splitlines()]
            return p
        except:
            self.abort(error.ResponseError(_("unexpected response:"), d))

    def changegroup(self, nodes, kind):
        n = " ".join(map(hex, nodes))
        return self.do_cmd("changegroup", roots=n)

    def changegroupsubset(self, bases, heads, kind):
        self.requirecap('changegroupsubset', _('look up remote changes'))
        bases = " ".join(map(hex, bases))
        heads = " ".join(map(hex, heads))
        return self.do_cmd("changegroupsubset", bases=bases, heads=heads)

    def unbundle(self, cg, heads, source):
        d = self.call("unbundle", heads=' '.join(map(hex, heads)))
        if d:
            # remote may send "unsynced changes"
            self.abort(error.RepoError(_("push refused: %s") % d))

        while 1:
            d = cg.read(4096)
            if not d:
                break
            self._send(d)

        self._send("", flush=True)

        r = self._recv()
        if r:
            # remote may send "unsynced changes"
            self.abort(error.RepoError(_("push failed: %s") % r))

        r = self._recv()
        try:
            return int(r)
        except:
            self.abort(error.ResponseError(_("unexpected response:"), r))

    def addchangegroup(self, cg, source, url):
        d = self.call("addchangegroup")
        if d:
            self.abort(error.RepoError(_("push refused: %s") % d))
        while 1:
            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:
            self.abort(error.ResponseError(_("unexpected response:"), r))

    def stream_out(self):
        return self.do_cmd('stream_out')

instance = sshrepository