#!/usr/bin/env python
# Copyright (C) 2013, 2014 Linaro Ltd.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os
import linaro_ldap


def grok_slave_format(user, keysets):
    fmt = 'command="/srv/linaro-git-tools/grok-shell slave %s",' \
          'no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty %s'
    tempstring = ""
    for keyset in keysets:
        tempstring = tempstring + (fmt % (user, keyset[1])) + "\n"
    return tempstring


if __name__ == '__main__':

    keys_file = os.path.expanduser('~/.ssh/authorized_keys')
    keys_file_tmp = keys_file + '.tmp'

    result = linaro_ldap.get_users_and_keys(only_validated=True)

    with open(keys_file_tmp, 'w') as f:
        for user, keysets in result.iteritems():
            f.write(grok_slave_format(user, keysets))
    os.rename(keys_file_tmp, keys_file)