#!/bin/bash

# Tests for MDP.
#
# Copyright 2014 Serval Project, Inc.
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.


source "${0%/*}/../testframework.sh"
source "${0%/*}/../testdefs.sh"

teardown() {
   stop_all_servald_servers
   kill_all_servald_processes
   assert_no_servald_processes
   report_all_servald_servers
}

set_filter_rules_path() {
   >"rules$instance_name"
   executeOk_servald config \
      set log.console.level debug \
      set debug.config yes \
      set debug.mdprequests yes \
      set debug.mdp_filter yes \
      set mdp.filter_rules_path "$PWD/rules$instance_name"
}

setup_mdp_filters_ping() {
   assert_no_servald_processes
   foreach_instance +A +B +C set_filter_rules_path
   foreach_instance +A +B +C create_single_identity
   start_servald_instances +A +B +C
   # Ensure that pings all work.
   set_instance +A
   fork executeOk_servald mdp ping --timeout=10 $SIDB 1
   fork executeOk_servald mdp ping --timeout=10 $SIDC 1
   set_instance +B
   fork executeOk_servald mdp ping --timeout=10 $SIDA 1
   fork executeOk_servald mdp ping --timeout=10 $SIDC 1
   set_instance +C
   fork executeOk_servald mdp ping --timeout=10 $SIDA 1
   fork executeOk_servald mdp ping --timeout=10 $SIDB 1
   fork_wait_all
}

doc_MDPFilterRulesDrop="MDP filter rules drop incoming and outgoing packets"
setup_MDPFilterRulesDrop() {
   setup_servald
   setup_mdp_filters_ping
}
test_MDPFilterRulesDrop() {
   set_instance +A
   # Block pong responses from B to A
   echo "drop <$SIDB:7" >>rulesA
   # Block pong responses from A to C
   echo "drop >$SIDC <*:7" >>rulesA
   executeOk_servald config sync
   fork execute_servald --exit-status=1 mdp ping --timeout=10 $SIDB 1
   fork executeOk_servald mdp ping --timeout=10 $SIDC 1
   set_instance +B
   fork executeOk_servald mdp ping --timeout=10 $SIDA 1
   fork executeOk_servald mdp ping --timeout=10 $SIDC 1
   set_instance +C
   fork execute_servald --exit-status=1 mdp ping --timeout=10 $SIDA 1
   fork executeOk_servald mdp ping --timeout=10 $SIDB 1
   fork_wait_all
}

doc_MDPFilterRulesAllow="MDP filter rules allow incoming and outgoing packets"
setup_MDPFilterRulesAllow() {
   setup_servald
   setup_mdp_filters_ping
}
test_MDPFilterRulesAllow() {
   set_instance +A
   # Allow A to ping B and receive pong from B
   echo "allow >$SIDB:7 <$SIDA; allow <$SIDB:7 >$SIDA" >>rulesA
   # Allow A to receive ping from B and send pong to B
   echo "allow <$SIDB >$SIDA:7; allow >$SIDB <$SIDA:7" >>rulesA
   # Allow A to receive ping from C (but not to send pong)
   echo "allow >*:7 <$SIDC" >>rulesA
   # All other packets dropped
   echo "drop all" >>rulesA
   executeOk_servald config sync
   fork executeOk_servald mdp ping --timeout=10 $SIDB 1
   fork execute_servald --exit-status=1 mdp ping --timeout=10 $SIDC 1
   set_instance +B
   fork executeOk_servald mdp ping --timeout=10 $SIDA 1
   fork executeOk_servald mdp ping --timeout=10 $SIDC 1
   set_instance +C
   fork execute_servald --exit-status=1 mdp ping --timeout=10 $SIDA 1
   fork executeOk_servald mdp ping --timeout=10 $SIDB 1
   fork_wait_all
}

runTests "$@"