[patch] arping.sh patch for source address

arping.sh.patch (text/plain), 2.92 KB, created by Conway S. Smith on 2007-09-24 06:49:00 UTC

--- arping.sh_baselayout-1.12.10-r4     2007-09-23 23:04:07.000000000 -0600
+++ arping.sh   2007-09-24 00:04:10.000000000 -0600
@@ -46,7 +46,7 @@
 # If neither arping (net-misc/iputils) or arping2 (net-analyzer/arping)
 # is installed then we return 1
 arping_address_exists() {
-       local iface="$1" ip="${2%%/*}" mac="$3" foundmac= i= w=
+       local iface="$1" ip="${2%%/*}" mac="$3" foundmac= i= w= ipndot=

        # We only handle IPv4 addresses
        [[ ${ip} != *.*.*.* ]] && return 1
@@ -61,18 +61,34 @@
        arping_sleep

        local ifvar=$(bash_variable "${iface}")
+
+       for i in ${ip//./ } ; do
+               if [[ ${#i} == "2" ]] ; then
+                       ipndot="${ipndot}0${i}"
+               elif [[ ${#i} == "1" ]] ; then
+                       ipndot="${ipndot}00${i}"
+               else
+                       ipndot="${ipndot}${i}"
+               fi
+       done
+
+       local source="arping_source_${ipndot}"
+       source="${!source}"
+       [[ -z ${source} ]] && source="${arping_source:-0}"
+
        w="arping_wait_${ifvar}"
        w="${!w}"
        [[ -z ${w} ]] && w="${arping_wait:-3}"

-       if [[ -x /sbin/arping ]] ; then
-               foundmac=$(arping -c 2 -w "${w}" -D -f -I "${iface}" \
-                       "${ip}" 2>/dev/null \
-                       | sed -n 's/.*\[\([^]]*\)\].*/\U\1/p')
-       elif [[ -x /usr/sbin/arping2 ]] ; then
+       if [[ -x /usr/sbin/arping2 ]] ; then
                for (( i=0; i<w; i++ )) ; do
-                       foundmac=$(arping2 -r -0 -c 1 -i "${iface}" \
-                               "${ip}" 2>/dev/null)
+                       if [[ ${source} == "0" ]] ; then
+                               foundmac=$(arping2 -r -0 -c 1 -i "${iface}" \
+                                       "${ip}" 2>/dev/null)
+                       else
+                               foundmac=$(arping2 -r -S ${source} -c 1 -i "${iface}" \
+                                       "${ip}" 2>/dev/null)
+                       fi
                        if [[ $? == "0" ]] ; then
                                foundmac=$(echo "${foundmac}" \
                                        | tr '[:lower:]' '[:upper:]')
@@ -80,6 +96,16 @@
                        fi
                        foundmac=
                done
+       elif [[ -x /sbin/arping ]] ; then
+               if [[ ${source} == "0" ]] ; then
+                       foundmac=$(arping -c 2 -w "${w}" -D -f -I "${iface}" \
+                               "${ip}" 2>/dev/null \
+                               | sed -n 's/.*\[\([^]]*\)\].*/\U\1/p')
+               else
+                       foundmac=$(arping -c 2 -w "${w}" -s ${source} -f -I "${iface}" \
+                               "${ip}" 2>/dev/null \
+                               | sed -n 's/.*\[\([^]]*\)\].*/\U\1/p')
+               fi
        fi

        [[ -z ${foundmac} ]] && return 1