diff options
Diffstat (limited to 'package/network/config/firewall')
7 files changed, 133 insertions, 97 deletions
diff --git a/package/network/config/firewall/Makefile b/package/network/config/firewall/Makefile index fce0a808cd..f97ac8d271 100644 --- a/package/network/config/firewall/Makefile +++ b/package/network/config/firewall/Makefile @@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=firewall PKG_VERSION:=2 -PKG_RELEASE:=57 +PKG_RELEASE:=58 include $(INCLUDE_DIR)/package.mk diff --git a/package/network/config/firewall/files/lib/core_forwarding.sh b/package/network/config/firewall/files/lib/core_forwarding.sh index c4a968143d..2ea03f0eb7 100644 --- a/package/network/config/firewall/files/lib/core_forwarding.sh +++ b/package/network/config/firewall/files/lib/core_forwarding.sh @@ -17,14 +17,14 @@ fw_load_forwarding() { fw_callback pre forwarding - local chain=forward + local chain=delegate_forward [ -n "$forwarding_src" ] && { chain=zone_${forwarding_src}_forward } local target=ACCEPT [ -n "$forwarding_dest" ] && { - target=zone_${forwarding_dest}_ACCEPT + target=zone_${forwarding_dest}_dest_ACCEPT } local mode diff --git a/package/network/config/firewall/files/lib/core_init.sh b/package/network/config/firewall/files/lib/core_init.sh index 035647998e..d1cad711cb 100644 --- a/package/network/config/firewall/files/lib/core_init.sh +++ b/package/network/config/firewall/files/lib/core_init.sh @@ -115,13 +115,13 @@ fw_load_defaults() { fw add i n POSTROUTING postrouting_rule } - fw add i f input - fw add i f output - fw add i f forward + fw add i f delegate_input + fw add i f delegate_output + fw add i f delegate_forward - fw add i f INPUT input - fw add i f OUTPUT output - fw add i f FORWARD forward + fw add i f INPUT delegate_input + fw add i f OUTPUT delegate_output + fw add i f FORWARD delegate_forward fw add i f reject fw add i f reject REJECT { --reject-with tcp-reset -p tcp } @@ -138,21 +138,28 @@ fw_config_get_zone() { fw_config_get_section "$1" zone { \ string name "$1" \ string network "" \ + string device "" \ + string subnet "" \ string input "$FW_DEFAULT_INPUT_POLICY" \ string output "$FW_DEFAULT_OUTPUT_POLICY" \ string forward "$FW_DEFAULT_FORWARD_POLICY" \ boolean masq 0 \ string masq_src "" \ string masq_dest "" \ + string extra "" \ + string extra_src "" \ + string extra_dest "" \ boolean conntrack 0 \ boolean mtu_fix 0 \ - boolean custom_chains "$FW_ADD_CUSTOM_CHAINS" \ + boolean custom_chains 0 \ boolean log 0 \ string log_limit 10 \ string family "" \ } || return [ -n "$zone_name" ] || zone_name=$zone_NAME - [ -n "$zone_network" ] || zone_network=$zone_name + [ -n "$zone_extra_src" ] || zone_extra_src="$zone_extra" + [ -n "$zone_extra_dest" ] || zone_extra_dest="$zone_extra" + [ -n "$zone_network$zone_subnet$zone_device$zone_extra_src$zone_extra_dest" ] || zone_network=$zone_name } fw_load_zone() { @@ -192,19 +199,22 @@ fw_load_zone() { local chain=zone_${zone_name} - fw add $mode f ${chain}_ACCEPT - fw add $mode f ${chain}_DROP - fw add $mode f ${chain}_REJECT + fw add $mode f ${chain}_src_ACCEPT + fw add $mode f ${chain}_src_DROP + fw add $mode f ${chain}_src_REJECT - # TODO: Rename to ${chain}_input - fw add $mode f ${chain} - fw add $mode f ${chain} ${chain}_${zone_input} $ + fw add $mode f ${chain}_dest_ACCEPT + fw add $mode f ${chain}_dest_DROP + fw add $mode f ${chain}_dest_REJECT + + fw add $mode f ${chain}_input + fw add $mode f ${chain}_input ${chain}_src_${zone_input} $ fw add $mode f ${chain}_forward - fw add $mode f ${chain}_forward ${chain}_${zone_forward} $ + fw add $mode f ${chain}_forward ${chain}_dest_${zone_forward} $ - # TODO: add ${chain}_output - fw add $mode f output ${chain}_${zone_output} $ + fw add $mode f ${chain}_output + fw add $mode f ${chain}_output ${chain}_dest_${zone_output} $ # TODO: Rename to ${chain}_MASQUERADE fw add $mode n ${chain}_nat @@ -223,7 +233,7 @@ fw_load_zone() { fw_die "zone ${zone_name}: custom_chains globally disabled" fw add $mode f input_${zone_name} - fw add $mode f ${chain} input_${zone_name} ^ + fw add $mode f ${chain}_input input_${zone_name} ^ fw add $mode f forwarding_${zone_name} fw add $mode f ${chain}_forward forwarding_${zone_name} ^ @@ -238,13 +248,16 @@ fw_load_zone() { local t for t in REJECT DROP; do - fw add $mode f ${chain}_${t} LOG ^ \ - { -m limit --limit $zone_log_limit --log-prefix "$t($zone_name): " } + local d + for d in src dest; do + fw add $mode f ${chain}_${d}_${t} LOG ^ \ + { -m limit --limit $zone_log_limit --log-prefix "$t($d $zone_name): " } + done done [ $zone_mtu_fix == 1 ] && \ fw add $mode m ${chain}_MSSFIX LOG ^ \ - { -m limit --limit $zone_log_limit --log-prefix "MSSFIX($zone_name): " } + { -p tcp --tcp-flags SYN,RST SYN -m limit --limit $zone_log_limit --log-prefix "MSSFIX($zone_name): " } } # NB: if MASQUERADING for IPv6 becomes available we'll need a family check here @@ -267,6 +280,16 @@ fw_load_zone() { done fi + local dev + for dev in ${zone_device:-""}; do + local net + for net in ${zone_subnet:-""}; do + [ -n "$dev" ] || [ -n "$net" ] || continue + fw_do_interface_rules add "${zone_name}" "$dev" "$net" \ + "${zone_extra_src}" "${zone_extra_dest}" + done + done + fw_callback post zone } @@ -293,7 +316,7 @@ fw_load_include() { fw_log error "You cannot use UCI in firewall includes!" >&2 exit 1 } - . $path + . $path ) } diff --git a/package/network/config/firewall/files/lib/core_interface.sh b/package/network/config/firewall/files/lib/core_interface.sh index 7400e2d351..9138cbf0c4 100644 --- a/package/network/config/firewall/files/lib/core_interface.sh +++ b/package/network/config/firewall/files/lib/core_interface.sh @@ -1,4 +1,4 @@ -# Copyright (C) 2009-2012 OpenWrt.org +# Copyright (C) 2009-2013 OpenWrt.org fw__uci_state_add() { local var="$1" @@ -31,6 +31,73 @@ fw__uci_state_del() { uci_toggle_state firewall core $var "$rest" } +fw_do_interface_rules() { + local action=$1 + local zone=$2 + local chain=zone_${zone} + local ifname=$3 + local subnet=$4 + local extra_src="$5" + local extra_dest="$6" + + local idev odev inet onet mode + fw_get_family_mode mode x $zone i + + fw_get_negation idev '-i' "$ifname" + fw_get_negation odev '-o' "$ifname" + + case "$mode/$subnet" in + # Zone supports v6 only or dual, need v6 + G6/*:*|i/*:*) + fw_get_negation inet '-s' "$subnet" + fw_get_negation onet '-d' "$subnet" + mode=6 + ;; + + # Zone supports v4 only or dual, need v4 + G4/*.*.*.*|i/*.*.*.*) + fw_get_negation inet '-s' "$subnet" + fw_get_negation onet '-d' "$subnet" + mode=4 + ;; + + # Need v6 while zone is v4 + */*:*) fw_log info "zone $zone does not support IPv6 address family, skipping"; return ;; + + # Need v4 while zone is v6 + */*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;; + + # Strip prefix + *) mode="${mode#G}" ;; + esac + + lock /var/run/firewall-interface.lock + + fw $action $mode f ${chain}_dest_ACCEPT ACCEPT $ { $odev $onet $extra_dest } + fw $action $mode f ${chain}_src_ACCEPT ACCEPT $ { $idev $inet $extra_src } + fw $action $mode f ${chain}_dest_DROP DROP $ { $odev $onet $extra_dest } + fw $action $mode f ${chain}_src_DROP DROP $ { $idev $inet $extra_src } + fw $action $mode f ${chain}_dest_REJECT reject $ { $odev $onet $extra_dest } + fw $action $mode f ${chain}_src_REJECT reject $ { $idev $inet $extra_src } + + [ "$(uci_get_state firewall core "${zone}_tcpmss")" == 1 ] && \ + fw $action $mode m ${chain}_MSSFIX TCPMSS $ \ + { $odev -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet $extra_dest } + + fw $action $mode f delegate_input ${chain}_input $ { $idev $inet $extra_src } + fw $action $mode f delegate_forward ${chain}_forward $ { $idev $inet $extra_src } + fw $action $mode f delegate_output ${chain}_output $ { $odev $onet $extra_dest } + + fw $action $mode n PREROUTING ${chain}_prerouting $ { $idev $inet $extra_src } + fw $action $mode r PREROUTING ${chain}_notrack $ { $idev $inet $extra_src } + fw $action $mode n POSTROUTING ${chain}_nat $ { $odev $onet $extra_dest } + + # Flush conntrack table + echo f >/proc/net/nf_conntrack 2>/dev/null + + lock -u /var/run/firewall-interface.lock +} + fw_configure_interface() { local iface=$1 local action=$2 @@ -52,66 +119,6 @@ fw_configure_interface() { fw_callback pre interface - fw__do_rules() { - local action=$1 - local zone=$2 - local chain=zone_${zone} - local ifname=$3 - local subnet=$4 - - local inet onet mode - fw_get_family_mode mode x $zone i - - case "$mode/$subnet" in - # Zone supports v6 only or dual, need v6 - G6/*:*|i/*:*) - inet="-s $subnet -d ::/0" - onet="-s ::/0 -d $subnet" - mode=6 - ;; - - # Zone supports v4 only or dual, need v4 - G4/*.*.*.*|i/*.*.*.*) - inet="-s $subnet -d 0.0.0.0/0" - onet="-s 0.0.0.0/0 -d $subnet" - mode=4 - ;; - - # Need v6 while zone is v4 - */*:*) fw_log info "zone $zone does not support IPv6 address family, skipping"; return ;; - - # Need v4 while zone is v6 - */*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;; - - # Strip prefix - *) mode="${mode#G}" ;; - esac - - lock /var/run/firewall-interface.lock - - fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -o "$ifname" $onet } - fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -i "$ifname" $inet } - fw $action $mode f ${chain}_DROP DROP $ { -o "$ifname" $onet } - fw $action $mode f ${chain}_DROP DROP $ { -i "$ifname" $inet } - fw $action $mode f ${chain}_REJECT reject $ { -o "$ifname" $onet } - fw $action $mode f ${chain}_REJECT reject $ { -i "$ifname" $inet } - - [ "$(uci_get_state firewall core "${zone}_tcpmss")" == 1 ] && \ - fw $action $mode m ${chain}_MSSFIX TCPMSS $ \ - { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet } - - fw $action $mode f input ${chain} $ { -i "$ifname" $inet } - fw $action $mode f forward ${chain}_forward $ { -i "$ifname" $inet } - fw $action $mode n PREROUTING ${chain}_prerouting $ { -i "$ifname" $inet } - fw $action $mode r PREROUTING ${chain}_notrack $ { -i "$ifname" $inet } - fw $action $mode n POSTROUTING ${chain}_nat $ { -o "$ifname" $onet } - - # Flush conntrack table - echo f >/proc/net/nf_conntrack 2>/dev/null - - lock -u /var/run/firewall-interface.lock - } - local old_zones old_ifname old_subnets config_get old_zones core "${iface}_zone" [ -n "$old_zones" ] && { @@ -123,7 +130,7 @@ fw_configure_interface() { local n for n in ${old_subnets:-""}; do fw_log info "removing $iface ($old_ifname${n:+ alias $n}) from zone $z" - fw__do_rules del $z $old_ifname $n + fw_do_interface_rules del $z $old_ifname $n done [ -n "$old_subnets" ] || { @@ -182,7 +189,7 @@ fw_configure_interface() { list_contains zone_network "$iface" || return fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name" - fw__do_rules add ${zone_name} "$ifname" "$aliasnet" + fw_do_interface_rules add ${zone_name} "$ifname" "$aliasnet" append new_zones $zone_name [ -n "$aliasnet" ] || { @@ -205,4 +212,3 @@ fw_sysctl_interface() { sysctl -w net.ipv6.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE } >/dev/null 2>/dev/null } - diff --git a/package/network/config/firewall/files/lib/core_redirect.sh b/package/network/config/firewall/files/lib/core_redirect.sh index fe396c1c12..9493bc6ae0 100644 --- a/package/network/config/firewall/files/lib/core_redirect.sh +++ b/package/network/config/firewall/files/lib/core_redirect.sh @@ -41,7 +41,7 @@ fw_load_redirect() { # in this case match only DNATed traffic and allow it on input, not forward if [ -z "$redirect_dest_ip" ] || /sbin/ifconfig | grep -qE "addr:${redirect_dest_ip//./\\.}\b"; then fwdopt="-m conntrack --ctstate DNAT" - fwdchain="zone_${redirect_src}" + fwdchain="zone_${redirect_src}_input" else fwdchain="zone_${redirect_src}_forward" fi @@ -114,7 +114,7 @@ fw_load_redirect() { $redirect_options \ } - fw add $mode f ${fwdchain:-forward} ACCEPT + \ + fw add $mode f ${fwdchain:-delegate_forward} ACCEPT + \ { $redirect_src_ip $redirect_dest_ip } { \ $srcaddr $destaddr \ $pr \ diff --git a/package/network/config/firewall/files/lib/core_rule.sh b/package/network/config/firewall/files/lib/core_rule.sh index f49c42af55..0ce2122be4 100644 --- a/package/network/config/firewall/files/lib/core_rule.sh +++ b/package/network/config/firewall/files/lib/core_rule.sh @@ -34,7 +34,7 @@ fw_load_rule() { fw_callback pre rule local table=f - local chain=input + local chain=delegate_output local target="${rule_target:-REJECT}" if [ "$target" == "NOTRACK" ]; then table=r @@ -42,16 +42,23 @@ fw_load_rule() { else if [ -n "$rule_src" ]; then if [ "$rule_src" != "*" ]; then - chain="zone_${rule_src}${rule_dest:+_forward}" + if [ -n "$rule_dest" ]; then + chain="zone_${rule_src}_forward" + else + chain="zone_${rule_src}_input" + fi else - chain="${rule_dest:+forward}" - chain="${chain:-input}" + chain="${rule_dest:+delegate_forward}" + chain="${chain:-delegate_input}" fi fi if [ -n "$rule_dest" ]; then if [ "$rule_dest" != "*" ]; then - target="zone_${rule_dest}_${target}" + target="zone_${rule_dest}_dest_${target}" + if [ -z "$rule_src" ]; then + chain="zone_${rule_dest}_output" + fi elif [ "$target" = REJECT ]; then target=reject fi diff --git a/package/network/config/firewall/files/lib/fw.sh b/package/network/config/firewall/files/lib/fw.sh index 76e294f568..ca851e81c0 100644 --- a/package/network/config/firewall/files/lib/fw.sh +++ b/package/network/config/firewall/files/lib/fw.sh @@ -170,7 +170,7 @@ fw__exec() { # <action> <family> <table> <chain> <target> <position> { <rules> } fw_log info "ICMP type '$2' is not valid for $fam address family, skipping rule" return 1 fi - shift + shift ;; *) cmdline="$cmdline $1" ;; esac |