Heaute: Hab schnell mal was gehckt um in mehreren routing tabllen automatisiert das ageway zu finden udn dherauszufinden ob bei ner multihomed anbindung eien ipv4 lokal ist für ipup/ip-down scripts
#!/bin/bash
DBG=1
#address
#IA=`ip ad sh | sed -ne /"inet .* scope"/p | sed s/".*inet "// | sed s/" scope \(global\|host\)"// | sed s/" peer "/"-"/ | sed s/" brd "/"="/ | sed s/"=.* "/" "/`
#echo "${IA}"
#route
#IR=`ip ro sh | sed s/" proto kernel "// | sed s/" scope link "// | sed s/" via "/"-"/ | sed s/"dev "/""/ | sed s/" src "/"@"/ | sed s/" @"/"@"/ | sed s/"^default"/"0\/0"/ | sed s/" metric "/" ="/`
#echo "${IR}"
al() {
if [ "${IA}" == "" ] && [ "${1}" == "" ]; then
IA=`ip ad sh | sed -ne /"inet .* scope"/p | sed s/".*inet "// | sed s/" scope \(global\|host\)"// | sed s/" peer "/"-"/ | sed s/" brd "/"="/ | sed s/"=.* "/" "/`
else
if [ "${IA}" == "" ] && [ "${1}" != "" ]; then
IA=`ip ad sh dev ${1} sed -ne /"inet .* scope"/p | sed s/".*inet "// | sed s/" scope \(global\|host\)"// | sed s/" peer "/"-"/ | sed s/" brd "/"="/ | sed s/"=.* "/" "/`
fi
fi
echo "${IA}"
}
ad() {
if [ "${IA}" == "" ]; then
IA=`al`
fi
#echo "${IA}"
fnd=0;
echo "${IA}" | while IFS= read -r ia; do
i1=`echo "${ia}" | sed s/" .*"//`
i2=`echo "${ia}" | sed s/".* "//`
if [ "${i1}" != "${i2}" ]; then
iD=`echo ${i2}`
else
iD="-"
fi
iC=`echo "${i1}" | sed -ne /"-"/p`
if [ "${iC}" != "" ]; then
iP=`echo "${i1}" | sed s/".*-"//`
iC=`echo "${i1}" | sed s/"-.*"//`
else
iC=`echo ${i1}`
iP="-"
fi
#echo -n I1 ${i1} I2 ${i2} IA ${ia} IP ${ip}
iA=`echo "${iC}" | sed -ne /"\/"/p`
if [ "${iA}" != "" ]; then
iA=`echo "${iC}" | sed s/"\/.*"//`
iM=`echo "${iC}" | sed s/".*\/"//`
else
iA=`echo ${iC}`
iM="-"
fi
if [ "${iM}" == "-" ] && [ "${iA}" != "" ] && [ "${iP}" != "-" ]; then
iM=`echo "${iP}" | sed s/".*\/"//`
iP=`echo "${iP}" | sed s/"\/.*"//`
fi
#echo IC (Cidr) ${iC} IA (IPv4) ${iA} IM (BinaryNetmask) ${iM} ${iP} ID (Device) ${iD} IP (PointToPoint)
if [ "${1}" != "" ]; then
if [ "${iC}" == "${1}" ] || [ "${iA}" == "${1}" ]; then
echo ${iD}
fnd=-1
break
fi
else
echo ${iA} ${iM} ${iD} ${iP}
fi
done
# if [ "${fnd}" != "0" ]; then
# echo ""
# fi
}
if [ "${DBG}" != "0" ]; then
IA=`al`
echo "$IA"
echo "IPv4Address BinaryNetMask Interface/Device PoinToPointPeer"
AD=`ad`
echo "${AD}"
IP="127.0.0.1"
AD=`ad ${IP}`
if [ "${AD}" != "" ]; then
echo "${AD}"
else
echo NOTFOUND
fi
#exit 0
fi
rt() {
if [ "${IR}" == "" ] && [ "${1}" == "" ]; then
IR=`ip ro sh | sed s/" proto kernel "// | sed s/" scope link "// | sed s/" via "/"-"/ | sed s/"dev "/""/ | sed s/" src "/"@"/ | sed s/" @"/"@"/ | sed s/"^default"/"0\/0"/ | sed s/" metric "/" ="/`
else
if [ "${IR}" == "" ] && [ "${1}" != "" ]; then
IR=`ip ro sh table "${1}" | sed s/" proto kernel "// | sed s/" scope link "// | sed s/" via "/"-"/ | sed s/"dev "/""/ | sed s/" src "/"@"/ | sed s/" @"/"@"/ | sed s/"^default"/"0\/0"/ | sed s/" metric "/" ="/`
fi
fi
#destinations
ID=`echo "${IR}" |sed s/" .*"// | sed s/"-.*"//`
OLD="${ID}"
NEW=""
for old in ${OLD}; do
fnd=0
for new in ${NEW}; do
if [ "${old}" == "${new}" ]; then
fnd=-1
break
fi
done
if [ "${fnd}" == "0" ]; then
if [ "${NEW}" != "" ]; then
NEW="${NEW} "
fi
NEW="${NEW}${old}"
fi
done
ID="${NEW}"
#echo "${ID}"
#pad missing metric
IM=`echo "${IR}" | sed -ne /"="/p`
IN=`echo "${IR}" | sed /"="/d`
IN=`echo "${IN}" | sed s/"$"/"=0"/`
if [ "${IM}" != "0" ] && [ "${IN}" != "" ]; then
IT="\n"
else
IT="";
fi
IR=`echo -e "${IN}${IT}${IM}"`
#tidy up per destination
Ir=""
for id in ${ID}; do
iS=`echo "${id}" | sed s@'\/'@'\\\/'@g`
iR=`echo "${IR}" | sed -ne /"^${iS}[-\ ]"/p`
if [ "${Ir}" != "" ]; then
Ir="${Ir}\n"
fi
Ir="${Ir}${iR}"
done
IR=`echo -e "${Ir}"`
echo "${IR}" | while IFS= read -r ir; do
im=`echo "${ir}" | sed s/".*="//`
im=`echo ${im}`
i2=`echo "${ir}" | sed s/"=${im}"//`
i2=`echo ${i2}`
i1=`echo "${i2}" | sed s/" .*"//`
i2=`echo "${i2}" | sed s/".* "//`
iv=`echo "${i1}" | sed -ne /"-"/p`
if [ "${iv}" != "" ]; then
iv=`echo "${i1}" | sed s/".*-"//`
id=`echo "${i1}" | sed s/"-.*"//`
else
id=`echo ${i1}`
iv="-"
fi
ii=`echo "${i2}" | sed -ne /"@"/p`
if [ "${ii}" != "" ]; then
is=`echo "${i2}" | sed s/".*@"//`
ii=`echo "${i2}" | sed s/"@.*"//`
else
ii=`echo ${i2}`
is="-"
fi
echo "${id} ${im} ${iv} ${ii} ${is}"
done
}
IT=`rt`
echo "IPv4Route/BinaryNetMask Metric Gateway Interface/Device SourceIPv4Addr"
echo "$IT"
#rt | sed -ne /'^0\/0'/p
rd() {
if [ "${1}" == "" ]; then
DA="0/0"
else
DA=$1
fi
da=`echo "${DA}" | sed s@'\/'@'\\\/'@g`
if [ "${IT}" == "" ]; then
IT=`rt`
fi
ix="32768";
echo "${IT}" | sed -ne /"^$da"/p | while IFS="\ " read id im iv ii is; do
im=`echo ${im}`
if [ "${im}" -lt "${ix}" ]; then
ix="${im}"
# echo "smaller ${id} ${im} ${iv} ${ii} ${is}"
echo "${id} ${im} ${iv} ${ii} ${is}"
# else
# echo "to big ${id} ${im} ${iv} ${ii} ${is}"
fi
done
}
if [ "${DBG}" != "0" ]; then
DA="0/0"
RA=`rd ${DA}`
if [ "${RA}" == "" ]; then
echo "no default route in table main trying table default"
IT=`rt default`
echo "IPv4Route/BinaryNetMask Metric Gateway Interface/Device SourceIPv4Addr"
echo "$IT"
DA="0/0"
RA=`rd ${DA}`
fi
fi
GW=""
IF=""
SA=""
rx=1
for ra in ${RA}; do
if [ "${DBG}" != "0" ]; then
# echo $rx $ra
case "${rx}" in
1) echo -n "destination" ;;
2) echo -n "metric" ;;
3) echo -n "gateway/via" ;;
4) echo -n "interface/device" ;;
5) echo -n "source-address" ;;
esac
echo -n " : \""
echo -n "${ra}"
echo "\""
fi
case "${rx}" in
3) GW=${ra} ;;
4) IF=${ra} ;;
5) SA=${ra} ;;
esac
rx=$((rx + 1))
done
if [ "${DBG}" != "0" ]; then
echo via $GW dev $IF src $SA
fi
exit 0
# ip li sh | sed -ne /"^\([0-9]*\): "/p | sed s/"^\([0-9]*\): "// | sed s/": sovile zu up/downhier noch was zum thema rinetd für udp - jetzt auch mit v6 unterstützung
