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convert pppoe test to a derivation

* move shell script to a runCommand
* multicast needs special options to run on loopback
 (nix-build sandbox disables non-local network interfaces)
This commit is contained in:
Daniel Barlow 2023-02-05 17:37:31 +00:00
parent 16a923f58f
commit ebc5d6a3e0
5 changed files with 68 additions and 38 deletions

1
ci.nix
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@ -1,4 +1,5 @@
{
smoke = import ./tests/smoke/test.nix;
pseudofiles = import ./tests/pseudofiles/test.nix;
pppoe = import ./tests/pppoe/test.nix;
}

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@ -18,8 +18,8 @@ qemu-system-mips \
-echr 16 \
-append "default console=ttyS0,38400n8 panic=10 oops=panic init=$INIT loglevel=8 root=/dev/vda" \
-drive file=$2,format=raw,readonly=on,if=virtio \
-netdev socket,id=access,mcast=230.0.0.1:1234 \
-netdev socket,id=access,mcast=230.0.0.1:1234,localaddr=127.0.0.1 \
-device virtio-net-pci,disable-legacy=on,disable-modern=off,netdev=access,mac=ba:ad:1d:ea:21:02 \
-netdev socket,id=lan,mcast=230.0.0.1:1235 \
-netdev socket,id=lan,mcast=230.0.0.1:1235,localaddr=127.0.0.1 \
-device virtio-net-pci,disable-legacy=on,disable-modern=off,netdev=lan,mac=ba:ad:1d:ea:21:01 \
-kernel $1 -display none $flags ${QEMU_OPTIONS}

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@ -1,31 +0,0 @@
#!/usr/bin/env sh
cleanup(){
if test -e foo.pid && test -d /proc/`cat foo.pid` ; then
echo "killing qemu"
kill `cat foo.pid`
fi
}
trap cleanup EXIT
fatal(){
err=$?
echo "FAIL: command $(eval echo $BASH_COMMAND) exited with code $err"
exit $err
}
trap fatal ERR
NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1 nix-build '<liminix>' -I liminix-config=./configuration.nix --arg device "import <liminix/devices/qemu>" -A outputs.default $*
if ! ( echo "cont" | socat - unix-connect:../support/ppp-server/qemu-monitor); then
echo "need pppoe server running"
exit 1
fi
../../scripts/run-qemu.sh --background foo.sock result/vmlinux result/squashfs
nix-shell -p expect --run "expect getaddress.expect"
set -o pipefail
response=$(nix-shell -p python3Packages.scapy --run 'python ./test-dhcp-service.py' )
echo "$response"
echo "$response" | nix-shell -p jq --run "jq -e 'select((.router == \"192.168.19.1\") and (.server_id==\"192.168.19.1\"))'"

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@ -66,10 +66,9 @@ sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, MULTICAST_TTL)
sock.bind((MCAST_GRP, MCAST_PORT))
host = socket.gethostbyname(socket.gethostname())
sock.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_IF, socket.inet_aton(host))
sock.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_IF, socket.inet_aton('127.0.0.1'))
sock.setsockopt(socket.SOL_IP, socket.IP_ADD_MEMBERSHIP,
socket.inet_aton(MCAST_GRP) + socket.inet_aton(host))
socket.inet_aton(MCAST_GRP) + socket.inet_aton('127.0.0.1'))
endtime = time.time() + TIMEOUT
sock.sendto(payload, (MCAST_GRP, MCAST_PORT))
@ -77,8 +76,8 @@ sock.sendto(payload, (MCAST_GRP, MCAST_PORT))
while time.time() < endtime:
try:
data, addr = sock.recvfrom(1024)
except socket.error:
print('Exception')
except socket.error as e:
print('recv exception: ', e)
else:
reply = Ether(data)
if is_dhcp_offer(reply):

61
tests/pppoe/test.nix Normal file
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@ -0,0 +1,61 @@
{
liminix
, nixpkgs
}:
let img = (import liminix {
device = import "${liminix}/devices/qemu/";
liminix-config = ./configuration.nix;
}).outputs.default;
pkgs = import <nixpkgs> {};
ros = pkgs.callPackage ../support/ppp-server {};
run-qemu = pkgs.writeShellScriptBin "run-qemu" ''
export PATH="${pkgs.lib.makeBinPath [pkgs.qemu]}:$PATH"
${builtins.readFile ../../scripts/run-qemu.sh}
'';
in pkgs.runCommand "check" {
nativeBuildInputs = with pkgs; [
python3Packages.scapy
expect
jq
socat
ros.routeros
run-qemu
] ;
} ''
serverstatedir=$(mktemp -d -t routeros-XXXXXX)
# python scapy drags in matplotlib which doesn't enjoy running in
# a sandbox with no $HOME, hence this environment variable
export MPLCONFIGDIR=$(mktemp -d -t routeros-XXXXXX)
killpid(){
if test -e $1 && test -d /proc/`cat $1` ; then
pid=$(cat $1)
kill $pid
fi
}
cleanup(){
killpid $serverstatedir/pid
test -n "$MPLCONFIGDIR" && test -d "$MPLCONFIGDIR" && rm -rf "$MPLCONFIGDIR"
killpid foo.pid
}
trap cleanup EXIT
fatal(){
err=$?
echo "FAIL: command $(eval echo $BASH_COMMAND) exited with code $err"
exit $err
}
trap fatal ERR
routeros $serverstatedir
run-qemu --background foo.sock ${img}/vmlinux ${img}/squashfs
expect ${./getaddress.expect}
set -o pipefail
response=$(python ${./test-dhcp-service.py})
echo "$response" | jq -e 'select((.router == "192.168.19.1") and (.server_id=="192.168.19.1"))'
echo $response > $out
''