.travis.yml

# Copyright 2016 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

language: cpp
sudo: required
dist: trusty
services:
  - docker

compiler:
  - gcc
  - clang

install:
  - sudo add-apt-repository -y ppa:george-edison55/cmake-3.x
  - if [[ "$CC" == * ]]; then sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test; fi
  - sudo apt-get update
  - sudo apt-get install -y cmake moreutils # moreutils for "ts" and "mispipe"
  - if [[ "$CC" == clang* ]]; then sudo apt-get install -y libstdc++-4.9-dev; fi
  - if [[ "$CC" == gcc* ]]; then sudo apt-get install -y g++-4.9; fi
  - if [[ "$CC" == gcc* ]]; then export CC=gcc-4.9 CXX=g++-4.9; fi
    # Smaller Alpine won't work here, because we reuse binary compiled on
    # Travis-Ubuntu-Trusty.
    # Other VMs will just reuse the same image.
  - docker pull ubuntu:14.04

script:
  - mkdir build
  - cd build
  - cmake ..
  - make
  - ./ndprbrd --help

  - docker run -dti --name=router --device=/dev/net/tun --cap-add=NET_ADMIN -v $TRAVIS_BUILD_DIR:/dir:ro ubuntu:14.04 bash
  - docker run -dti --name=isp --net=none ubuntu:14.04 bash  # ISP without network :-)
  - docker run -dti --name=host1 --net=none ubuntu:14.04 bash
  - docker run -dti --name=host2 --net=none ubuntu:14.04 bash
  - docker run -dti --name=bridges --cap-add=NET_ADMIN ubuntu:14.04 bash
  - docker ps -a

  - docker exec router apt-get update
  - docker exec router apt-get install -y software-properties-common  # add-apt-repository
  - docker exec router add-apt-repository -y ppa:jonathonf/zerotier  # ndppd
  - docker exec router apt-get update
  - docker exec router apt-get install -y radvd ndppd tcpdump

    # Connect the hosts with networks
    # Not using "docker network" to reduce confusion of which interface has which name, as multiple will be connected to router
    # Bridging is done in another container, because kernel on Travis's "host" breaks IPv6
    #
    #       ┏━━━━━━━┓
    #       ┃  isp  ┃
    #       ┗━━wani━┛
    #           |
    # ┏━━━━━━━━wanr━━━━━━━━┓
    # ┃       router       ┃
    # ┗━lan1r━━━━━━━━lan2r━┛
    #     |            |
    # ┌┄┄┄|┄┄┄┄┄┄┄┄┄┄┄┄|┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┐
    # ┊┌─lan1rb─┐  ┌─lan2rb─┐             ┊
    # ┊│ lan1br │  │ lan2br │  L2 bridges ┊
    # ┊└─lan1hb─┘  └─lan2hb─┘             ┊
    # └┄┄┄|┄┄┄┄┄┄┄┄┄┄┄┄|┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┘
    #     |            |
    # ┏━lan1h━┓    ┏━lan2h━┓
    # ┃ host1 ┃    ┃ host2 ┃
    # ┗━━━━━━━┛    ┗━━━━━━━┛
    #
  - sudo ip link add lan1r type veth peer name lan1rb
  - sudo ip link add lan2r type veth peer name lan2rb
  - sudo ip link add lan1h type veth peer name lan1hb
  - sudo ip link add lan2h type veth peer name lan2hb
  - sudo ip link add wanr type veth peer name wani
  - ifconfig -a
    # Teach "ip" command the names of our network netspaces
  - sudo mkdir -p /run/netns
  - sudo ln -s /proc/$(docker inspect -f '{{.State.Pid}}' router)/ns/net /run/netns/router
  - sudo ln -s /proc/$(docker inspect -f '{{.State.Pid}}' isp)/ns/net /run/netns/isp
  - sudo ln -s /proc/$(docker inspect -f '{{.State.Pid}}' host1)/ns/net /run/netns/host1
  - sudo ln -s /proc/$(docker inspect -f '{{.State.Pid}}' host2)/ns/net /run/netns/host2
  - sudo ln -s /proc/$(docker inspect -f '{{.State.Pid}}' bridges)/ns/net /run/netns/bridges
  - sudo ip link set lan1r netns router
  - sudo ip link set lan1h netns host1
  - sudo ip link set lan2r netns router
  - sudo ip link set lan2h netns host2
  - sudo ip link set wanr netns router
  - sudo ip link set wani netns isp
  - sudo ip link set lan1rb netns bridges
  - sudo ip link set lan2rb netns bridges
  - sudo ip link set lan1hb netns bridges
  - sudo ip link set lan2hb netns bridges
  - docker exec bridges ip link add lan1br type bridge
  - docker exec bridges ip link add lan2br type bridge
  - docker exec bridges ip link set dev lan1br up
  - docker exec bridges ip link set dev lan2br up
  - docker exec bridges ip link set dev lan1rb up
  - docker exec bridges ip link set dev lan2rb up
  - docker exec bridges ip link set dev lan1hb up
  - docker exec bridges ip link set dev lan2hb up
  - docker exec bridges ip link set dev lan1rb master lan1br
  - docker exec bridges ip link set dev lan2rb master lan2br
  - docker exec bridges ip link set dev lan1hb master lan1br
  - docker exec bridges ip link set dev lan2hb master lan2br
  - docker exec bridges bridge -d link
    # fd61:67f4:e87e:b396::/64 is network which isp gave us, which we'll share using ndprbrd+ndppd
    # fd7d:4bec:f525:dd8e::1 is some external host; for simplicity it will also belong to isp
  - sudo ip netns exec isp ip addr add fd61:67f4:e87e:b396::1/64 dev wani
  - sudo ip netns exec isp ip addr add fd7d:4bec:f525:dd8e::1 dev wani
  - sudo ip netns exec router ip addr add fd61:67f4:e87e:b396::2/128 dev wanr
  - sudo ip netns exec isp ip link set wani up
  - sudo ip netns exec router ip link set wanr up
  - sudo ip netns exec router ip link set lan1r up
  - sudo ip netns exec router ip link set lan2r up
  - sudo ip netns exec host1 ip link set lan1h up
  - sudo ip netns exec host2 ip link set lan2h up
  - ifconfig
  - docker exec isp ifconfig
  - docker exec router ifconfig
  - docker exec host1 ifconfig
  - docker exec host2 ifconfig
  - docker exec bridges ifconfig
    # Router has enabled forwarding, and can't accept RA from ISP, setup a static route as-if it got configured via RA
  - sudo ip netns exec router sysctl net.ipv6.conf.all.forwarding=1
  - docker exec isp ip addr show dev wani | perl -n -E 'm|inet6 (fe80:[^/]+)| and say $1'
  - sudo ip netns exec router ip route add default via $(docker exec isp ip a show dev wani | perl -n -E 'm|inet6 (fe80:[^/]+)| and say $1') dev wanr
  - docker exec router ip -6 route

  - docker exec -d router sh -c 'tcpdump -vv -i wanr > /var/log/wanr.log'
  - docker exec -d router sh -c 'tcpdump -vv -i lan1r > /var/log/lan1r.log'
  - docker exec -d router sh -c 'tcpdump -vv -i lan2r > /var/log/lan2r.log'

    # Setup daemons
  - docker exec -d router sh -c '/dir/build/ndprbrd --interface=lan1r --interface=lan2r --prefix=fd61:67f4:e87e:b396::/64 --expire=90 > /var/log/ndprbrd.log 2>&1'
  - docker exec router cp /dir/testdata/ndppd.conf /etc/
  - docker exec router cp /dir/testdata/radvd.conf /etc/
  - docker exec router ndppd -d
  - docker exec router radvd

  - sleep 5
  - docker exec router ps aux
  - docker exec router ifconfig
  - docker exec router ip -6 route

  - docker exec -d router sh -c 'tcpdump -vv -i ndprbrd0 > /var/log/ndprbrd0.log'

    # Test!
  - mispipe "docker exec host1 ping6 -c90 -O fd7d:4bec:f525:dd8e::1" ts

    # Test another direction; note that the source is outside of subnet
  - docker exec host2 ip addr show dev lan2h | perl -n -E 'm|inet6 (fd61:[^/]+)| and say $1'
  - mispipe "docker exec isp ping6 -c60 -I fd7d:4bec:f525:dd8e::1 -O $(docker exec host2 ip addr show dev lan2h | perl -n -E 'm|inet6 (fd61:[^/]+)| and say $1')" ts
  - docker exec router ip -6 route

    # Swap hosts between LANs and continue pinging.
  - docker exec bridges ip link set dev lan1hb master lan2br
  - docker exec bridges ip link set dev lan2hb master lan1br
  - docker exec bridges ifconfig
  - docker exec bridges bridge -d link
  - mispipe "docker exec host1 ping6 -c600 -O fd7d:4bec:f525:dd8e::1" ts
  - docker exec router ip -6 route
  - mispipe "docker exec isp ping6 -c60 -I fd7d:4bec:f525:dd8e::1 -O $(docker exec host2 ip addr show dev lan2h | perl -n -E 'm|inet6 (fd61:[^/]+)| and say $1')" ts
  - docker exec router ip -6 route

  - docker exec router pkill tcpdump
  - docker exec router cat /var/log/wanr.log
  - docker exec router cat /var/log/lan1r.log
  - docker exec router cat /var/log/lan2r.log
  - docker exec router cat /var/log/ndprbrd0.log
  - docker exec router cat /var/log/ndprbrd.log