view tests/notcapable @ 41457:6c10eba6b9cd stable

subrepo: prohibit variable expansion on creation of hg subrepo (SEC)

It's probably wrong to expand path at localrepo.*repository() layer, but
fixing the layering issue would require careful inspection of call paths.
So, this patch adds add a validation to the subrepo constructor.

os.path.realpath(util.expandpath(root)) is what vfsmod.vfs() would do.

# Disable the $CAP wire protocol capability.

if test -z "$CAP"
then
    echo "CAP environment variable not set."
fi

cat > notcapable-$CAP.py << EOF
from mercurial import extensions, localrepo, repository
def extsetup(ui):
    extensions.wrapfunction(repository.peer, 'capable', wrapcapable)
    extensions.wrapfunction(localrepo.localrepository, 'peer', wrappeer)
def wrapcapable(orig, self, name, *args, **kwargs):
    if name in '$CAP'.split(' '):
        return False
    return orig(self, name, *args, **kwargs)
def wrappeer(orig, self):
    # Since we're disabling some newer features, we need to make sure local
    # repos add in the legacy features again.
    return localrepo.locallegacypeer(self)
EOF

echo '[extensions]' >> $HGRCPATH
echo "notcapable-$CAP = `pwd`/notcapable-$CAP.py" >> $HGRCPATH