olsr: fix minor complain from 'shellcheck'

diff --git a/olsrd/files/olsrd.init b/olsrd/files/olsrd.init
index 48ca2815014ec80212cdb2703e212928d4d5dd6f..b21d8ea469b48b2ddedf6483d3eaea05b9039963 100644 (file)
--- a/olsrd/files/olsrd.init
+++ b/olsrd/files/olsrd.init
@@ -176,6 +176,7 @@ olsrd_write_plparam() {
                else
                        warning_invalid_value olsrd "$cfg" "NonOlsrIf"
                fi
+
                [ -z "$ifname" ] || value=$ifname
        fi
 
@@ -184,15 +185,16 @@ olsrd_write_plparam() {
 
 config_update_schema() {
        local schema_varname="$1"
-       validate_varname "$schema_varname" || return 1
        local command="$2"
-       validate_varname "$command" || return 1
        local option="$3"
-       validate_varname "$option" || return 1
        local value="$4"
        local schema
        local cur_option
 
+       validate_varname "$schema_varname" || return 1
+       validate_varname "$command" || return 1
+       validate_varname "$option" || return 1
+
        case "$varname" in
                *_LENGTH) return 0;;
                *_ITEM*) return 0;;
@@ -393,6 +395,8 @@ olsrd_write_olsrd() {
 
        config_get smartgateway "$cfg" SmartGateway
        config_get smartgatewayuplink "$cfg" SmartGatewayUplink
+       export smartgateway
+       export smartgatewayuplink
 
        config_write_options "$OLSRD_OLSRD_SCHEMA" "$cfg" olsrd_write_option
        echo
@@ -599,13 +603,13 @@ olsrd_write_interface_defaults() {
 
 olsrd_update_schema() {
        local command="$1"
-       validate_varname "$command" || return 0
        local varname="$2"
-       validate_varname "$varname" || return 0
        local value="$3"
        local cfg="$CONFIG_SECTION"
        local cfgt
-       local cur_varname
+
+       validate_varname "$command" || return 0
+       validate_varname "$varname" || return 0
 
        config_get cfgt "$cfg" TYPE
        case "$cfgt" in
@@ -643,7 +647,7 @@ get_wan_ifnames()
 {
        local wanifnames word catch_next
 
-       which ip >/dev/null || return 1
+       command -v ip >/dev/null || return 1
 
        set -- $( ip route list exact 0.0.0.0/0 table all )
        for word in $*; do
@@ -672,8 +676,10 @@ get_wan_ifnames()
 
 olsrd_setup_smartgw_rules() {
        local funcname="olsrd_setup_smartgw_rules"
-       # Check if ipip is installed
-       [ -e /etc/modules.d/[0-9]*-ipip ] || {
+       local file=
+
+       for file in /etc/modules.d/[0-9]*-ipip; do :; done
+       [ -e "$file" ] || {
                log "$funcname() Warning: kmod-ipip is missing. SmartGateway will not work until you install it."
                return 1
        }
@@ -686,8 +692,8 @@ olsrd_setup_smartgw_rules() {
                nowan=0
        fi
 
-       IP4T=$(which iptables)
-       IP6T=$(which ip6tables)
+       IP4T="$( command -v iptables )"
+       IP6T="$( command -v ip6tables )"
 
        # Delete smartgw firewall rules first
        if [ "$UCI_CONF_NAME" = "olsrd6" ]; then
@@ -709,8 +715,10 @@ olsrd_setup_smartgw_rules() {
                while $IP4T -t nat -D postrouting_rule -o tnl_+ -j MASQUERADE 2> /dev/null; do :;done
        fi
 
+       # var 'smartgateway' + 'smartgatewayuplink' build in olsrd_write_olsrd()
        if [ "$smartgateway" = "yes" ]; then
                log "$funcname() Notice: Inserting firewall rules for SmartGateway"
+
                if [ ! "$smartgatewayuplink" = "none" ]; then
                        if [ "$smartgatewayuplink" = "ipv4" ]; then
                                # Allow everything to be forwarded to tnl_+ and use NAT for it