olsrd: init: fix all work with is done via IFS (storing old value, set IFS, work...

diff --git a/olsrd/files/olsrd.init b/olsrd/files/olsrd.init
index d5f7a1b8f1adccf69713914138f35e83c8b8c674..7282bfee586cf54cfce5c7c6538e8f91118ecd35 100644 (file)
--- a/olsrd/files/olsrd.init
+++ b/olsrd/files/olsrd.init
@@ -39,9 +39,7 @@ validate_olsrd_option() {
 
 system_config() {
        local cfg="$1"
-       local cfgt
-       local hostname
-       local latlon
+       local cfgt hostname latlon oldIFS
 
        config_get cfgt "$cfg" TYPE
 
@@ -53,9 +51,7 @@ system_config() {
 
        if [ -z "$SYSTEM_LAT" -o -z "$SYSTEM_LON" ]; then
                config_get latlon "$cfg" latlon
-               IFS=" ${T}${N},"
-               set -- $latlon
-               unset IFS
+               oldIFS="$IFS"; IFS=" ${T}${N},"; set -- $latlon; IFS="$oldIFS"
                SYSTEM_LAT="$1"
                SYSTEM_LON="$2"
        fi
@@ -139,7 +135,7 @@ olsrd_write_plparam() {
        validate_varname "$option" || return 1
        local value="$4"
        local option_type="$5"
-       local _option
+       local _option oldIFS
 
        if [ "$option_type" = bool ]; then
                case "$value" in
@@ -154,17 +150,17 @@ olsrd_write_plparam() {
                return 1
        fi
 
-       IFS='-_'
-       set -- $option
+       oldIFS="$IFS"; IFS='-_'; set -- $option; IFS="$oldIFS"
        option="$*"
-       unset IFS
        _option="$option"
+
        if [ "$option" = 'hosts' ]; then
                set -- $value
                option="$1"
                shift
                value="$*"
        fi
+
        if [ "$option" = 'NonOlsrIf' ]; then
                if validate_varname "$value"; then
                        if network_get_device ifname "$value"; then
@@ -184,7 +180,6 @@ olsrd_write_plparam() {
 }
 
 config_update_schema() {
-       unset IFS
        local schema_varname="$1"
        validate_varname "$schema_varname" || return 1
        local command="$2"
@@ -226,7 +221,6 @@ config_update_schema() {
 
 config_write_options() {
        local funcname="config_write_options"
-       unset IFS
        local schema="$1"
        local cfg="$2"
        validate_varname "$cfg" || return 1
@@ -234,18 +228,7 @@ config_write_options() {
        [ -z "$write_func" ] && output_func=echo
        local write_param="$4"
 
-       local schema_entry
-       local option
-       local option_length
-       local option_type
-       local default
-       local value
-       local list_size
-       local list_item
-       local list_value
-       local i
-       local position
-       local speed
+       local schema_entry option option_length option_type default value list_size list_item list_value i position speed oldIFS
        local list_speed_vars="HelloInterval HelloValidityTime TcInterval TcValidityTime MidInterval MidValidityTime HnaInterval HnaValidityTime"
 
        get_value_for_entry()
@@ -256,7 +239,7 @@ config_write_options() {
                [ "$default" = "$schema_entry" ] && default=
                option="${schema_entry%%[=]*}"
 
-               IFS=':'; set -- $option; unset IFS
+               oldIFS="$IFS"; IFS=':'; set -- $option; IFS="$oldIFS"
                option="$1"
                option_type="$2"
 
@@ -349,9 +332,7 @@ config_write_options() {
                fi
 
                if [ -z "$value" ]; then
-                       IFS='+'
-                       set -- $default
-                       unset IFS
+                       oldIFS="$IFS"; IFS='+'; set -- $default; IFS="$oldIFS"
                        value=$*
                elif [ "$value" = '-' -a -n "$default" ]; then
                        continue