Attachment 357806 Details for Bug 555870

Code catching some rfc corner cases -- v1

classless-route-set.v1.sh (text/plain), 1.34 KB, created by Marius Tomaschewski on 2010-04-29 15:01:49 UTC

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Creator: Marius Tomaschewski

Created: 2010-04-29 15:01:49 UTC

Size: 1.34 KB

patch

obsolete

>
>new_rfc3442_classless_static_routes='25 129 210 177 132 172 16 1 200 32 192 168 1 1 0 0 0 0 24 192 168 1 0 0 0 0 8 10 172 16 1 200 0 172 16 1 254'
>rfc_routes=($new_rfc3442_classless_static_routes)
>
>len2netmask()
>{
>        test -n "$1" || return 1
>        local i n=0 adr=() len=$(($1))
>        for o in 0 1 2 3; do
>                adr[$o]=0
>                for i in 128 64 32 16 8 4 2 1; do
>                        ((n++ < len)) && \
>                        ((adr[$o] = ${adr[$o]} + $i))
>                done
>        done
>        echo ${adr[*]}
>        return 0
>}
>
>for(( i=0; i < ${#rfc_routes[@]}; )); do
>
>        net_length=${rfc_routes[$i]}
>	net_mask=($(len2netmask $net_length))
>        ((i++))
>
>        net_address=(0 0 0 0)
>        for(( j=0; j < $[$net_length / 8 + \
>              ($net_length % 8 ? 1 : 0)]; j++, i++)); do
>                net_address[$j]=$((${rfc_routes[$i]} & ${net_mask[$j]}))
>        done
>
>        gateway=(0 0 0 0)
>        for (( j=0; j < 4; j++, i++ )); do
>                gateway[$j]=${rfc_routes[$i]}
>        done
>
>        old_IFS="$IFS"
>        IFS='.'
>
>	case "${gateway[*]}" in
>	0.0.0.0) gw=""                 ;; # link local
>	*.0|*.255|0.*|255.*) continue  ;; # invalid -- break?
>	*)      gw="${gateway[*]}"     ;; # OK
>	esac
>	echo ip route add "${net_address[*]}/$net_length" ${gw:+via "$gw"}
>
>        IFS="$old_IFS"
>	echo ""
>done
>

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Attachments on bug 555870: 327730 | 327732 | 357806