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Diffstat (limited to '')
| -rw-r--r-- | heartbeat/findif.sh | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/heartbeat/findif.sh b/heartbeat/findif.sh new file mode 100644 index 0000000..5f1c19e --- /dev/null +++ b/heartbeat/findif.sh @@ -0,0 +1,260 @@ +#!/bin/sh +ipcheck_ipv4() { + local r1_to_255="([1-9][0-9]?|1[0-9][0-9]|2[0-4][0-9]|25[0-5])" + local r0_to_255="([0-9][0-9]?|1[0-9][0-9]|2[0-4][0-9]|25[0-5])" + local r_ipv4="^$r1_to_255\.$r0_to_255\.$r0_to_255\.$r0_to_255$" + echo "$1" | grep -q -Ee "$r_ipv4" +} +ipcheck_ipv6() { + ! echo "$1" | grep -qs "[^0-9:a-fA-F]" +} +ifcheck() { + local ifname="$1" + $IP2UTIL link show dev $ifname 2>&1 +} +prefixcheck() { + local prefix=$1 + local prefix_length=${#prefix} + local prefix_check=$2 + + if [ $prefix_length -gt 3 -o $prefix_length -eq 0 ] ; then + return 1 + fi + echo "$prefix" | grep -qs "[^0-9]" + if [ $? = 0 ] ; then + return 1 + fi + if [ $prefix -lt 1 -o $prefix -gt $prefix_check ] ; then + return 1 + fi + return 0 +} +getnetworkinfo() +{ + local line netinfo + ip -o -f inet route list match $OCF_RESKEY_ip scope host | (while read line; + do + netinfo=`echo $line | awk '{print $2}'` + case $netinfo in + */*) + set -- $line + break + ;; + esac + done + echo $line) +} + +# previous versions of the IPaddr2 resource agent used to accept a netmask +# in dotted quad notation (and convert to cidr notation implicitly; possibly +# with warnings nobody ever noticed) +# We can do so here as well. +maybe_convert_dotted_quad_to_cidr() +{ + # does this even look like a dotted quad notation? + case $netmask in + # invalid if it contains other than digits and dots + # invalid if it contains adjacent dots, + # or starts or ends with a dot + # or more than three dots + # or more than three digits in a row + *[!0-9.]* | *..* | *.*.*.*.* | .* | *. | *[0-9][0-9][0-9][0-9]* ) + return ;; + + # do we have three dots? + # component range check on <= 255 is done below + *.*.*.*) : ;; + + *) return ;; + esac + + local IFS=. + set -- $netmask + [ $# = 4 ] || return; + + local b m=0 mask; + for b ; do + [ $b -le 255 ] || return; + m=$(( (m << 8) + b )); + done; + case $m in + # for i in `seq 32 -1 0`; do printf "%10u) netmask=$i ;;\n" $(( ((1 << i)-1) << (32 - i) )); done + 4294967295) mask=32 ;; + 4294967294) mask=31 ;; + 4294967292) mask=30 ;; + 4294967288) mask=29 ;; + 4294967280) mask=28 ;; + 4294967264) mask=27 ;; + 4294967232) mask=26 ;; + 4294967168) mask=25 ;; + 4294967040) mask=24 ;; + 4294966784) mask=23 ;; + 4294966272) mask=22 ;; + 4294965248) mask=21 ;; + 4294963200) mask=20 ;; + 4294959104) mask=19 ;; + 4294950912) mask=18 ;; + 4294934528) mask=17 ;; + 4294901760) mask=16 ;; + 4294836224) mask=15 ;; + 4294705152) mask=14 ;; + 4294443008) mask=13 ;; + 4293918720) mask=12 ;; + 4292870144) mask=11 ;; + 4290772992) mask=10 ;; + 4286578688) mask=9 ;; + 4278190080) mask=8 ;; + 4261412864) mask=7 ;; + 4227858432) mask=6 ;; + 4160749568) mask=5 ;; + 4026531840) mask=4 ;; + 3758096384) mask=3 ;; + 3221225472) mask=2 ;; + 2147483648) mask=1 ;; + 0) mask=0 ;; + *) ocf_log err "Bogus netmask: $netmask" ; return ;; + esac + ocf_log warn "Please convert dotted quad netmask $netmask to CIDR notation $mask!" + netmask=$mask +} + +findif_check_params() +{ + local family="$1" + local match="$OCF_RESKEY_ip" + local nic="$OCF_RESKEY_nic" + # netmask NOT local, see maybe_convert_dotted_quad_to_cidr + netmask="$OCF_RESKEY_cidr_netmask" + local brdcast="$OCF_RESKEY_broadcast" + local errmsg + + maybe_convert_dotted_quad_to_cidr + + # Do a sanity check only on start and validate-all + # to avoid returning OCF_ERR_CONFIGURED from the monitor operation. + case $__OCF_ACTION in + start|validate-all) true;; + *) return $OCF_SUCCESS;; + esac + + if [ -n "$nic" ] ; then + errmsg=`ifcheck $nic` + if [ $? -ne 0 ] ; then + ocf_log err "Invalid interface name [$nic]: $errmsg" + return $OCF_ERR_CONFIGURED + fi + fi + + if [ "$family" = "inet6" ] ; then + ipcheck_ipv6 $match + if [ $? = 1 ] ; then + ocf_log err "IP address [$match] not valid." + return $OCF_ERR_CONFIGURED + fi + if [ -z "$nic" ] ; then + echo $match | grep -qis '^fe80::' + if [ $? = 0 ] ; then + ocf_log err "'nic' parameter is mandatory for a link local address [$match]." + return $OCF_ERR_CONFIGURED + fi + fi + if [ -n "$netmask" ] ; then + prefixcheck $netmask 128 + if [ $? = 1 ] ; then + ocf_log err "Invalid netmask specification [$netmask]." + return $OCF_ERR_CONFIGURED + fi + fi + else + # family = inet + ipcheck_ipv4 $match + if [ $? = 1 ] ; then + ocf_log err "IP address [$match] not valid." + return $OCF_ERR_CONFIGURED + fi + if [ -n "$netmask" ] ; then + prefixcheck $netmask 32 + if [ $? = 1 ] ; then + ocf_log err "Invalid netmask specification [$netmask]." + return $OCF_ERR_CONFIGURED + fi + fi + if [ -n "$brdcast" ] ; then + ipcheck_ipv4 $brdcast + if [ $? = 1 ] ; then + if [ "$brdcast" != "+" -a "$brdcast" != "-" ]; then + ocf_log err "Invalid broadcast address [$brdcast]." + return $OCF_ERR_CONFIGURED + fi + fi + fi + fi + return $OCF_SUCCESS +} + +findif() +{ + local match="$OCF_RESKEY_ip" + local family + local scope + local nic="$OCF_RESKEY_nic" + local netmask="$OCF_RESKEY_cidr_netmask" + local brdcast="$OCF_RESKEY_broadcast" + + echo $match | grep -qs ":" + if [ $? = 0 ] ; then + family="inet6" + else + family="inet" + scope="scope link" + fi + findif_check_params $family || return $? + + if [ -n "$netmask" ]; then + match=$match/$netmask + fi + if [ -n "$nic" ] ; then + # NIC supports more than two. + set -- $(ip -o -f $family route list match $match $scope | grep "dev $nic " | awk 'BEGIN{best=0} /\// { mask=$1; sub(".*/", "", mask); if( int(mask)>=best ) { best=int(mask); best_ln=$0; } } END{print best_ln}') + else + set -- $(ip -o -f $family route list match $match $scope | awk 'BEGIN{best=0} /\// { mask=$1; sub(".*/", "", mask); if( int(mask)>=best ) { best=int(mask); best_ln=$0; } } END{print best_ln}') + fi + if [ $# = 0 ] ; then + case $OCF_RESKEY_ip in + 127.*) + set -- `getnetworkinfo` + shift;; + esac + fi + if [ -z "$nic" -o -z "$netmask" ] ; then + if [ $# = 0 ] ; then + ocf_log err "Unable to find nic or netmask." + return $OCF_ERR_GENERIC + fi + case $1 in + */*) : OK ;; + # "ip route" doesnt show netmask for IPv6 /128 + *:*:*) : OK ;; + *) + ocf_log err "Unable to find cidr_netmask." + return $OCF_ERR_GENERIC ;; + esac + fi + [ -z "$nic" ] && nic=$3 + [ -z "$netmask" ] && netmask=${1#*/} + if [ $family = "inet" ] ; then + if [ -z "$brdcast" ] ; then + if [ -n "$7" ] ; then + set -- `ip -o -f $family addr show | grep $7` + [ "$5" = brd ] && brdcast=$6 + fi + fi + else + if [ -z "$OCF_RESKEY_nic" ] && [ -z "$OCF_RESKEY_cidr_netmask" ] && [ "$netmask" != "${1#*/}" ] ; then + ocf_log err "Unable to find nic, or netmask mismatch." + return $OCF_ERR_GENERIC + fi + fi + echo "$nic netmask $netmask broadcast $brdcast" + return $OCF_SUCCESS +} |