tests/topotests/bgp_auth/test_bgp_auth3.py

   1 #!/usr/bin/env python
   2
   3 #
   4 # test_bgp_auth.py
   5 # Part of NetDEF Topology Tests
   6 #
   7 # Copyright (c) 2020 by Volta Networks
   8 #
   9 # Permission to use, copy, modify, and/or distribute this software
  10 # for any purpose with or without fee is hereby granted, provided
  11 # that the above copyright notice and this permission notice appear
  12 # in all copies.
  13 #
  14 # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
  15 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  16 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
  17 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  18 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  19 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  20 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  21 # OF THIS SOFTWARE.
  22 #
  23
  24 """
  25 test_bgp_auth.py: Test BGP Md5 Authentication
  26
  27                              +------+
  28                     +--------|      |--------+
  29                     | +------|  R1  |------+ |
  30                     | | -----|      |----+ | |
  31                     | | |    +------+    | | |
  32                     | | |                | | |
  33                    +------+            +------+
  34                    |      |------------|      |
  35                    |  R2  |------------|  R3  |
  36                    |      |------------|      |
  37                    +------+            +------+
  38
  39
  40 setup is 3 routers with 3 links between each each link in a different vrf
  41 Default, blue and red respectively
  42 Tests check various fiddling with passwords and checking that the peer
  43 establishment is as expected and passwords are not leaked across sockets
  44 for bgp instances
  45 """
  46 # pylint: disable=C0413
  47
  48 import json
  49 import os
  50 import platform
  51 import sys
  52 from time import sleep
  53
  54 import pytest
  55 from lib import common_config, topotest
  56 from lib.common_config import (
  57     save_initial_config_on_routers,
  58     reset_with_new_configs,
  59 )
  60 from bgp_auth_common import (
  61     check_vrf_peer_change_passwords,
  62     check_all_peers_established,
  63     check_vrf_peer_remove_passwords,
  64 )
  65 from lib.topogen import Topogen, TopoRouter, get_topogen
  66
  67 pytestmark = [pytest.mark.bgpd, pytest.mark.ospfd]
  68
  69 CWD = os.path.dirname(os.path.realpath(__file__))
  70
  71
  72 def build_topo(tgen):
  73     tgen.add_router("R1")
  74     tgen.add_router("R2")
  75     tgen.add_router("R3")
  76
  77     tgen.add_link(tgen.gears["R1"], tgen.gears["R2"])
  78     tgen.add_link(tgen.gears["R1"], tgen.gears["R3"])
  79     tgen.add_link(tgen.gears["R2"], tgen.gears["R3"])
  80     tgen.add_link(tgen.gears["R1"], tgen.gears["R2"])
  81     tgen.add_link(tgen.gears["R1"], tgen.gears["R3"])
  82     tgen.add_link(tgen.gears["R2"], tgen.gears["R3"])
  83     tgen.add_link(tgen.gears["R1"], tgen.gears["R2"])
  84     tgen.add_link(tgen.gears["R1"], tgen.gears["R3"])
  85     tgen.add_link(tgen.gears["R2"], tgen.gears["R3"])
  86
  87
  88 def setup_module(mod):
  89     "Sets up the pytest environment"
  90     # This function initiates the topology build with Topogen...
  91     tgen = Topogen(build_topo, mod.__name__)
  92     # ... and here it calls Mininet initialization functions.
  93     tgen.start_topology()
  94
  95     r1 = tgen.gears["R1"]
  96     r2 = tgen.gears["R2"]
  97     r3 = tgen.gears["R3"]
  98
  99     # blue vrf
 100     r1.cmd_raises("ip link add blue type vrf table 1001")
 101     r1.cmd_raises("ip link set up dev blue")
 102     r2.cmd_raises("ip link add blue type vrf table 1001")
 103     r2.cmd_raises("ip link set up dev blue")
 104     r3.cmd_raises("ip link add blue type vrf table 1001")
 105     r3.cmd_raises("ip link set up dev blue")
 106
 107     r1.cmd_raises("ip link add lo1 type dummy")
 108     r1.cmd_raises("ip link set lo1 master blue")
 109     r1.cmd_raises("ip link set up dev lo1")
 110     r2.cmd_raises("ip link add lo1 type dummy")
 111     r2.cmd_raises("ip link set up dev lo1")
 112     r2.cmd_raises("ip link set lo1 master blue")
 113     r3.cmd_raises("ip link add lo1 type dummy")
 114     r3.cmd_raises("ip link set up dev lo1")
 115     r3.cmd_raises("ip link set lo1 master blue")
 116
 117     r1.cmd_raises("ip link set R1-eth2 master blue")
 118     r1.cmd_raises("ip link set R1-eth3 master blue")
 119     r2.cmd_raises("ip link set R2-eth2 master blue")
 120     r2.cmd_raises("ip link set R2-eth3 master blue")
 121     r3.cmd_raises("ip link set R3-eth2 master blue")
 122     r3.cmd_raises("ip link set R3-eth3 master blue")
 123
 124     r1.cmd_raises("ip link set up dev  R1-eth2")
 125     r1.cmd_raises("ip link set up dev  R1-eth3")
 126     r2.cmd_raises("ip link set up dev  R2-eth2")
 127     r2.cmd_raises("ip link set up dev  R2-eth3")
 128     r3.cmd_raises("ip link set up dev  R3-eth2")
 129     r3.cmd_raises("ip link set up dev  R3-eth3")
 130
 131     # red vrf
 132     r1.cmd_raises("ip link add red type vrf table 1002")
 133     r1.cmd_raises("ip link set up dev red")
 134     r2.cmd_raises("ip link add red type vrf table 1002")
 135     r2.cmd_raises("ip link set up dev red")
 136     r3.cmd_raises("ip link add red type vrf table 1002")
 137     r3.cmd_raises("ip link set up dev red")
 138
 139     r1.cmd_raises("ip link add lo2 type dummy")
 140     r1.cmd_raises("ip link set lo2 master red")
 141     r1.cmd_raises("ip link set up dev lo2")
 142     r2.cmd_raises("ip link add lo2 type dummy")
 143     r2.cmd_raises("ip link set up dev lo2")
 144     r2.cmd_raises("ip link set lo2 master red")
 145     r3.cmd_raises("ip link add lo2 type dummy")
 146     r3.cmd_raises("ip link set up dev lo2")
 147     r3.cmd_raises("ip link set lo2 master red")
 148
 149     r1.cmd_raises("ip link set R1-eth4 master red")
 150     r1.cmd_raises("ip link set R1-eth5 master red")
 151     r2.cmd_raises("ip link set R2-eth4 master red")
 152     r2.cmd_raises("ip link set R2-eth5 master red")
 153     r3.cmd_raises("ip link set R3-eth4 master red")
 154     r3.cmd_raises("ip link set R3-eth5 master red")
 155
 156     r1.cmd_raises("ip link set up dev  R1-eth4")
 157     r1.cmd_raises("ip link set up dev  R1-eth5")
 158     r2.cmd_raises("ip link set up dev  R2-eth4")
 159     r2.cmd_raises("ip link set up dev  R2-eth5")
 160     r3.cmd_raises("ip link set up dev  R3-eth4")
 161     r3.cmd_raises("ip link set up dev  R3-eth5")
 162
 163     r1.cmd_raises("sysctl -w net.ipv4.tcp_l3mdev_accept=1")
 164     r2.cmd_raises("sysctl -w net.ipv4.tcp_l3mdev_accept=1")
 165     r3.cmd_raises("sysctl -w net.ipv4.tcp_l3mdev_accept=1")
 166
 167     # This is a sample of configuration loading.
 168     router_list = tgen.routers()
 169
 170     # For all registered routers, load the zebra configuration file
 171     for rname, router in router_list.items():
 172         router.load_config(TopoRouter.RD_ZEBRA, "zebra.conf")
 173         router.load_config(TopoRouter.RD_OSPF)
 174         router.load_config(TopoRouter.RD_BGP)
 175
 176     # After copying the configurations, this function loads configured daemons.
 177     tgen.start_router()
 178
 179     # Save the initial router config. reset_config_on_routers will return to this config.
 180     save_initial_config_on_routers(tgen)
 181
 182
 183 def teardown_module(mod):
 184     "Teardown the pytest environment"
 185     tgen = get_topogen()
 186
 187     # This function tears down the whole topology.
 188     tgen.stop_topology()
 189
 190
 191 def test_prefix_peer_change_passwords(tgen):
 192     "selecively change passwords checkig state with prefix config"
 193
 194     # only supported in kernel > 5.3
 195     if topotest.version_cmp(platform.release(), "5.3") < 0:
 196         return
 197
 198     reset_with_new_configs(tgen, "bgpd_prefix.conf", "ospfd.conf")
 199     check_vrf_peer_change_passwords(prefix="yes")
 200
 201
 202 def test_vrf_peer_established(tgen):
 203     "default vrf 3 peers same password with VRF config"
 204
 205     # clean routers and load vrf config
 206     reset_with_new_configs(tgen, "bgpd_vrf.conf", "ospfd_vrf.conf")
 207     check_all_peers_established("blue")
 208
 209
 210 def test_vrf_peer_remove_passwords(tgen):
 211     "selectively remove passwords checking state with VRF config"
 212
 213     reset_with_new_configs(tgen, "bgpd_vrf.conf", "ospfd_vrf.conf")
 214     check_vrf_peer_remove_passwords(vrf="blue")
 215
 216
 217 def test_vrf_peer_change_passwords(tgen):
 218     "selectively change passwords checking state with VRF config"
 219
 220     reset_with_new_configs(tgen, "bgpd_vrf.conf", "ospfd_vrf.conf")
 221     check_vrf_peer_change_passwords(vrf="blue")
 222
 223
 224 def test_memory_leak(tgen):
 225     "Run the memory leak test and report results."
 226     if not tgen.is_memleak_enabled():
 227         pytest.skip("Memory leak test/report is disabled")
 228
 229     tgen.report_memory_leaks()
 230
 231
 232 if __name__ == "__main__":
 233     args = ["-s"] + sys.argv[1:]
 234     sys.exit(pytest.main(args))