view mercurial/sshserver.py @ 10301:56b50194617f

templates: rename `Last change' column in hgwebdir repository list.

This patch changes column headers in the templates that previously
said `Last change' to `Last modified'. Neither code nor functionality
are changed other than that.

For some time now, I have been annoyed by the fact the `Last change'
column didn't list the age of the youngest changeset in the
repository, or at least tip. It just occurred to me that this is
because the wording is slightly misleading; what the column in fact
lists is when the repository was last *modified*, that is, when
changesets was last added or removed from it.

The word `change' can be understood as referring to the changeset
itself. Using `changed' would be ever so slightly less
amigous. However, the standard nomenclature in this case is
`modification date' and `Last modified', which is incidentally entirely
unambigous. Hence, `Last modified' is the wording used.

# sshserver.py - ssh protocol server support for mercurial
#
# Copyright 2005-2007 Matt Mackall <[e-mail]>
# Copyright 2006 Vadim Gelfer <[e-mail]>
#
# 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()