comparison mercurial/context.py @ 34926:f7e4d6c20095 stable

statichttprepo: prevent loading dirstate over HTTP on node lookup (issue5717)

This seems a bit hacky, but works well. There should be no reason that
static-http repo had to load dirstate.

Initially I tried to proxy os.stat() call through vfs so that statichttpvfs
could hook it, but there wasn't a good error value which the statichttpvfs
could return to get around the util.filestat issue.

34925:8b95e420e248

                return
            if changeid == 'tip':
                self._node = repo.changelog.tip()
                self._rev = repo.changelog.rev(self._node)
                return
            if changeid == '.' or changeid == repo.dirstate.p1():
                # this is a hack to delay/avoid loading obsmarkers
                # when we know that '.' won't be hidden
                self._node = repo.dirstate.p1()
                self._rev = repo.unfiltered().changelog.rev(self._node)
                return

            # lookup failed
            # check if it might have come from damaged dirstate
            #
            # XXX we could avoid the unfiltered if we had a recognizable
            # exception for filtered changeset access
            if changeid in repo.unfiltered().dirstate.parents():
                msg = _("working directory has unknown parent '%s'!")
                raise error.Abort(msg % short(changeid))
            try:
                if len(changeid) == 20 and nonascii(changeid):
                    changeid = hex(changeid)

34926:f7e4d6c20095

                return
            if changeid == 'tip':
                self._node = repo.changelog.tip()
                self._rev = repo.changelog.rev(self._node)
                return
            if (changeid == '.'
                or repo.local() and changeid == repo.dirstate.p1()):
                # this is a hack to delay/avoid loading obsmarkers
                # when we know that '.' won't be hidden
                self._node = repo.dirstate.p1()
                self._rev = repo.unfiltered().changelog.rev(self._node)
                return

            # lookup failed
            # check if it might have come from damaged dirstate
            #
            # XXX we could avoid the unfiltered if we had a recognizable
            # exception for filtered changeset access
            if (repo.local()
                and changeid in repo.unfiltered().dirstate.parents()):
                msg = _("working directory has unknown parent '%s'!")
                raise error.Abort(msg % short(changeid))
            try:
                if len(changeid) == 20 and nonascii(changeid):
                    changeid = hex(changeid)