Testing that `option log 1` enables rule logging and sets the rule name as
log prefix. Also testing that setting settin `option log` to a non-boolean
string uses that string verbatim as log prefix.

-- Testcase --
{%
	include("./root/usr/share/firewall4/main.uc", {
		getenv: function(varname) {
			switch (varname) {
			case 'ACTION':
				return 'print';
			}
		}
	})
%}
-- End --

-- File uci/helpers.json --
{}
-- End --

-- File uci/firewall.json --
{
	"zone": [
		{
			"name": "wan"
		}
	],
	"rule": [
		{
			"proto": "any",
			"log": "1"
		},
		{
			"name": "Explicit rule name",
			"proto": "any",
			"log": "1"
		},
		{	"proto": "any",
			"log": "Explicit prefix: "
		}
	],
	"redirect": [
		{
			"proto": "tcp",
			"src": "wan",
			"dest_ip": "10.0.0.2",
			"dest_port": "22",
			"log": "1"
		},
		{
			"name": "Explicit redirect name",
			"proto": "tcp",
			"src": "wan",
			"dest_ip": "10.0.0.3",
			"dest_port": "23",
			"log": "1"
		},
		{
			"proto": "tcp",
			"src": "wan",
			"dest_ip": "10.0.0.4",
			"dest_port": "24",
			"log": "Explicit prefix: "
		}
	],
	"nat": [
		{
			"src": "wan",
			"target": "MASQUERADE",
			"log": "1"
		},
		{
			"name": "Explicit nat name",
			"src": "wan",
			"target": "MASQUERADE",
			"log": "1"
		},
		{
			"src": "wan",
			"target": "MASQUERADE",
			"log": "Explicit log prefix: "
		}
	]
}
-- End --

-- Expect stdout --
table inet fw4
flush table inet fw4

table inet fw4 {
	#
	# Defines
	#

	define wan_devices = {  }
	define wan_subnets = {  }


	#
	# User includes
	#

	include "/etc/nftables.d/*.nft"


	#
	# Filter rules
	#

	chain input {
		type filter hook input priority filter; policy drop;

		iifname "lo" accept comment "!fw4: Accept traffic from loopback"

		ct state established,related accept comment "!fw4: Allow inbound established and related flows"
	}

	chain forward {
		type filter hook forward priority filter; policy drop;

		ct state established,related accept comment "!fw4: Allow forwarded established and related flows"
	}

	chain output {
		type filter hook output priority filter; policy drop;

		oifname "lo" accept comment "!fw4: Accept traffic towards loopback"

		ct state established,related accept comment "!fw4: Allow outbound established and related flows"
		counter log prefix "@rule[0]: " comment "!fw4: @rule[0]"
		counter log prefix "Explicit rule name: " comment "!fw4: Explicit rule name"
		counter log prefix "Explicit prefix: " comment "!fw4: @rule[2]"
	}

	chain prerouting {
		type filter hook prerouting priority filter; policy accept;
	}

	chain handle_reject {
		meta l4proto tcp reject with tcp reset comment "!fw4: Reject TCP traffic"
		reject with icmpx type port-unreachable comment "!fw4: Reject any other traffic"
	}

	chain input_wan {
		ct status dnat accept comment "!fw4: Accept port redirections"
		jump drop_from_wan
	}

	chain output_wan {
		jump drop_to_wan
	}

	chain forward_wan {
		ct status dnat accept comment "!fw4: Accept port forwards"
		jump drop_to_wan
	}

	chain helper_wan {
	}

	chain drop_from_wan {
	}

	chain drop_to_wan {
	}


	#
	# NAT rules
	#

	chain dstnat {
		type nat hook prerouting priority dstnat; policy accept;
	}

	chain srcnat {
		type nat hook postrouting priority srcnat; policy accept;
	}

	chain dstnat_wan {
		meta nfproto ipv4 counter log prefix "@redirect[0]: " dnat 10.0.0.2:22 comment "!fw4: @redirect[0]"
		meta nfproto ipv4 counter log prefix "Explicit redirect name: " dnat 10.0.0.3:23 comment "!fw4: Explicit redirect name"
		meta nfproto ipv4 counter log prefix "Explicit prefix: " dnat 10.0.0.4:24 comment "!fw4: @redirect[2]"
	}

	chain srcnat_wan {
		meta nfproto ipv4 counter log prefix "@nat[0]: " masquerade comment "!fw4: @nat[0]"
		meta nfproto ipv4 counter log prefix "Explicit nat name: " masquerade comment "!fw4: Explicit nat name"
		meta nfproto ipv4 counter log prefix "Explicit log prefix: " masquerade comment "!fw4: @nat[2]"
	}


	#
	# Raw rules (notrack)
	#

	chain raw_prerouting {
		type filter hook prerouting priority raw; policy accept;
	}

	chain raw_output {
		type filter hook output priority raw; policy accept;
	}


	#
	# Mangle rules
	#

	chain mangle_prerouting {
		type filter hook prerouting priority mangle; policy accept;
	}

	chain mangle_postrouting {
		type filter hook postrouting priority mangle; policy accept;
	}

	chain mangle_input {
		type filter hook input priority mangle; policy accept;
	}

	chain mangle_output {
		type route hook output priority mangle; policy accept;
	}

	chain mangle_forward {
		type filter hook forward priority mangle; policy accept;
	}
}
-- End --