From 0618d7d02d41410b94a8a50ddb2d5a9a63bd0edc Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordberg.se>
Date: Fri, 13 Sep 2019 16:39:55 +0200
Subject: Parametrise netns#, n# and ip#

Makes it easier to test with many peers.
---
 tests/netsh.sh | 80 +++++++++++++++++++++++++++-------------------------------
 1 file changed, 37 insertions(+), 43 deletions(-)

(limited to 'tests/netsh.sh')

diff --git a/tests/netsh.sh b/tests/netsh.sh
index 0376c14..984411a 100755
--- a/tests/netsh.sh
+++ b/tests/netsh.sh
@@ -7,82 +7,76 @@ set -e
 
 exec 3>&1
 export WG_HIDE_KEYS=never
-netns0="wg-test-$$-0"
-netns1="wg-test-$$-1"
-netns2="wg-test-$$-2"
+netnsn() { echo wg-test-$$-$1; }
 pretty() { echo -e "\x1b[32m\x1b[1m[+] ${1:+NS$1: }${2}\x1b[0m" >&3; }
 pp() { pretty "" "$*"; "$@"; }
 maybe_exec() { if [[ $BASHPID -eq $$ ]]; then "$@"; else exec "$@"; fi; }
-n0() { pretty 0 "$*"; maybe_exec ip netns exec $netns0 "$@"; }
-n1() { pretty 1 "$*"; maybe_exec ip netns exec $netns1 "$@"; }
-n2() { pretty 2 "$*"; maybe_exec ip netns exec $netns2 "$@"; }
-ip0() { pretty 0 "ip $*"; ip -n $netns0 "$@"; }
-ip1() { pretty 1 "ip $*"; ip -n $netns1 "$@"; }
-ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
+nn() { local netns=$(netnsn $1) n=$1; shift; pretty $n "$*"; maybe_exec ip netns exec $netns "$@"; }
+ipn() { local netns=$(netnsn $1) n=$1; shift; pretty $n "ip $*"; ip -n $netns "$@"; }
 
 cleanup() {
 	set +e
 	exec 2>/dev/null
-	ip0 link del dev wg0
-	ip1 link del dev wg0
-	ip2 link del dev wg0
-	local to_kill="$(ip netns pids $netns0) $(ip netns pids $netns1) $(ip netns pids $netns2)"
+	ipn 0 link del dev wg0
+	ipn 1 link del dev wg0
+	ipn 2 link del dev wg0
+	local to_kill="$(ip netns pids $(netnsn 0)) $(ip netns pids $(netnsn 1)) $(ip netns pids $(netnsn 2))"
 	[[ -n $to_kill ]] && kill $to_kill
-	pp ip netns del $netns0
-	pp ip netns del $netns1
-	pp ip netns del $netns2
+	pp ip netns del $(netnsn 0)
+	pp ip netns del $(netnsn 1)
+	pp ip netns del $(netnsn 2)
 	exit
 }
 
 trap cleanup EXIT
 
-ip netns del $netns0 2>/dev/null || true
-ip netns del $netns1 2>/dev/null || true
-ip netns del $netns2 2>/dev/null || true
-pp ip netns add $netns0
-pp ip netns add $netns1
-pp ip netns add $netns2
-ip0 link set up dev lo
+ip netns del $(netnsn 0) 2>/dev/null || true
+ip netns del $(netnsn 1) 2>/dev/null || true
+ip netns del $(netnsn 2) 2>/dev/null || true
+pp ip netns add $(netnsn 0)
+pp ip netns add $(netnsn 1)
+pp ip netns add $(netnsn 2)
+ipn 0 link set up dev lo
 
-ip0 link add dev wg0 type wireguard
-ip0 link set wg0 netns $netns1
-ip0 link add dev wg0 type wireguard
-ip0 link set wg0 netns $netns2
+ipn 0 link add dev wg0 type wireguard
+ipn 0 link set wg0 netns $(netnsn 1)
+ipn 0 link add dev wg0 type wireguard
+ipn 0 link set wg0 netns $(netnsn 2)
 server_private=$(wg genkey)
 server_public=$(wg pubkey <<< $server_private)
 client_private=$(wg genkey)
 client_public=$(wg pubkey <<< $client_private)
 
 configure_peers() {
-	ip1 addr add fe80::/64 dev wg0
-	ip2 addr add fe80::badc:0ffe:e0dd:f00d/128 dev wg0
+	ipn 1 addr add fe80::/64 dev wg0
+	ipn 2 addr add fe80::badc:0ffe:e0dd:f00d/128 dev wg0
 
-	n1 wg set wg0 \
+	nn 1 wg set wg0 \
 		private-key <(echo $server_private) \
 		listen-port 1 \
 		peer $client_public \
 			allowed-ips fe80::badc:0ffe:e0dd:f00d/128
 
-	n2 wg set wg0 \
+	nn 2 wg set wg0 \
 		private-key <(echo $client_private) \
 		listen-port 2 \
 		peer $server_public \
 			allowed-ips 0.0.0.0/0,::/0
 
-	ip1 link set up dev wg0
-	ip2 link set up dev wg0
+	ipn 1 link set up dev wg0
+	ipn 2 link set up dev wg0
 
-	ip2 route add fe80::/128 dev wg0
-	ip1 route add 192.168.4.0/28 dev wg0
-	ip1 route add 192.168.73.0/27 dev wg0
-	ip1 route add 2001:db8:1234::/124 dev wg0
-	ip1 route add 2001:db8:7777::/124 dev wg0
+	ipn 2 route add fe80::/128 dev wg0
+	ipn 1 route add 192.168.4.0/28 dev wg0
+	ipn 1 route add 192.168.73.0/27 dev wg0
+	ipn 1 route add 2001:db8:1234::/124 dev wg0
+	ipn 1 route add 2001:db8:7777::/124 dev wg0
 }
 configure_peers
 
-n1 wg set wg0 peer "$client_public" endpoint [::1]:2
-n2 wg set wg0 peer "$server_public" endpoint [::1]:1
-n2 ping6 -c 10 -f -W 1 fe80::%wg0
-n1 ping6 -c 10 -f -W 1 fe80::badc:0ffe:e0dd:f00d%wg0
+nn 1 wg set wg0 peer "$client_public" endpoint [::1]:2
+nn 2 wg set wg0 peer "$server_public" endpoint [::1]:1
+nn 2 ping6 -c 10 -f -W 1 fe80::%wg0
+nn 1 ping6 -c 10 -f -W 1 fe80::badc:0ffe:e0dd:f00d%wg0
 
-n1 ./wg-dynamic-server wg0
+nn 1 ./wg-dynamic-server wg0
-- 
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