tests: Add arptables-{save,restore} testcases

This actually does a bit more since it creates the ruleset using
separate arptables calls.

Note that there are a few commented out lines containing commands which
don't apply for unknown reasons - something to investigate later.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>

diff --git a/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0 b/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0
new file mode 100755 (executable)
index 0000000..49baab5
--- /dev/null
+++ b/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0
@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -e
+#set -x
+
+# there is no legacy backend to test
+[[ $XT_MULTI == "*xtables-nft-multi" ]] || exit 0
+
+# fill arptables manually
+
+$XT_MULTI arptables -F
+$XT_MULTI arptables -A INPUT -s 10.0.0.0/8 -j ACCEPT
+$XT_MULTI arptables -A INPUT -d 192.168.123.1 -j ACCEPT
+#$XT_MULTI arptables -A INPUT --source-mac fe:ed:ba:be:00:01 -j ACCEPT
+#$XT_MULTI arptables -A INPUT --destination-mac fe:ed:ba:be:00:01 -j ACCEPT
+$XT_MULTI arptables -N foo
+$XT_MULTI arptables -A foo -i lo -j ACCEPT
+$XT_MULTI arptables -A foo -l 6 -j ACCEPT
+$XT_MULTI arptables -A foo --opcode Request -j ACCEPT
+$XT_MULTI arptables -A foo --h-type 1 --proto-type 0x800 -j ACCEPT
+$XT_MULTI arptables -A foo -l 6 --h-type 1 --proto-type 0x800 -i lo --opcode Request -j ACCEPT
+$XT_MULTI arptables -A INPUT -j foo
+$XT_MULTI arptables -A INPUT
+
+$XT_MULTI arptables -A OUTPUT -o lo -j ACCEPT
+$XT_MULTI arptables -A OUTPUT -o eth134 -j mangle --mangle-ip-s 10.0.0.1
+$XT_MULTI arptables -A OUTPUT -o eth432 -j CLASSIFY --set-class feed:babe
+$XT_MULTI arptables -A OUTPUT -o eth432 --opcode Request -j CLASSIFY --set-class feed:babe
+$XT_MULTI arptables -P OUTPUT DROP
+
+# compare against stored arptables dump
+
+DUMP='*filter
+:INPUT ACCEPT
+:OUTPUT DROP
+:foo -
+-A INPUT -s 10.0.0.0/8 -j ACCEPT
+-A INPUT -d 192.168.123.1 -j ACCEPT
+-A INPUT -j foo
+-A INPUT 
+-A OUTPUT -o lo -j ACCEPT
+-A OUTPUT -o eth134 -j mangle --mangle-ip-s 10.0.0.1
+-A OUTPUT -o eth432 -j CLASSIFY --set-class feed:babe
+-A OUTPUT -o eth432 --opcode 1 -j CLASSIFY --set-class feed:babe
+-A foo -i lo -j ACCEPT
+-A foo --h-length 6 -j ACCEPT
+-A foo --opcode 1 -j ACCEPT
+-A foo --h-type 1 --proto-type 0x800 -j ACCEPT
+-A foo -i lo --h-length 6 --opcode 1 --h-type 1 --proto-type 0x800 -j ACCEPT
+'
+
+diff -u <(echo -e "$DUMP") <($XT_MULTI arptables-save)
+
+# make sure dump can be restored and check it didn't change
+
+$XT_MULTI arptables -F
+$XT_MULTI arptables-restore <<<$DUMP
+diff -u <(echo -e "$DUMP") <($XT_MULTI arptables-save)

diff --git a/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0 b/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0
new file mode 100755 (executable)
index 0000000..8bc4d08
--- /dev/null
+++ b/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -e
+
+# there is no legacy backend to test
+[[ $XT_MULTI == "*xtables-nft-multi" ]] || exit 0
+
+# arptables-restore reuses preloaded targets and matches, make sure defaults
+# apply to consecutive rules using the same target/match as a previous one
+
+DUMP='*filter
+:OUTPUT ACCEPT
+-A OUTPUT -j mangle --mangle-ip-s 10.0.0.1
+-A OUTPUT -j mangle --mangle-ip-d 10.0.0.2
+'
+
+# note how mangle-ip-s is unset in second rule
+
+EXPECT='*filter
+:INPUT ACCEPT
+:OUTPUT ACCEPT
+-A OUTPUT -j mangle --mangle-ip-s 10.0.0.1
+-A OUTPUT -j mangle --mangle-ip-d 10.0.0.2
+'
+
+$XT_MULTI arptables -F
+$XT_MULTI arptables-restore <<<$DUMP
+diff -u <(echo -e "$EXPECT") <($XT_MULTI arptables-save | grep -v '^#')