sedlo

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Rev 14 Rev 15

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#!/bin/bash #!/bin/bash

# author : Petr Simandl www.simandl.cz # author : Petr Simandl www.simandl.cz

# release date : 20/10/2006 # release date : 1/11/2006

# name : sedlo # name : sedlo

# description : dynamic side routing tables tool # description : dynamic side routing tables tool

# license : GPL # license : GPL

sl_version="0.0.4pre5" sl_version="0.0.4pre6"

PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin

sl_nmcnf="sedlo.conf" sl_nmcnf="sedlo.conf"

sl_sedlocnf="/etc/$sl_nmcnf" sl_sedlocnf="/etc/$sl_nmcnf"

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for sl_igw in $sl_igws for sl_igw in $sl_igws

do do

sl_igwn=`echo $sl_igw | $sl_awkcmd -F '*' '{print $1}'` sl_igwn=`echo $sl_igw | $sl_awkcmd -F '*' '{print $1}'`

sl_igwip=`echo $sl_igw | $sl_awkcmd -F '*' '{print $2}'` sl_igwip=`echo $sl_igw | $sl_awkcmd -F '*' '{print $2}'`

sl_igwtype=`echo $sl_igw | $sl_awkcmd -F '*' '{print $3}'` sl_igwtype=`echo $sl_igw | $sl_awkcmd -F '*' '{print $3}'`

#oprava falesneho routovani na lokalni iface - pokud jsme lokalni igw tak se nema najit ip #oprava falesneho routovani na lokalni iface - pokud jsme lokalni igw tak se nema najit ip

#protoze cesta dal neni - jsme totiz uz na lokalnim iface #protoze cesta dal neni - jsme totiz uz na lokalnim iface

sl_igwgt=`$sl_ipcmd ro ls | $sl_grepcmd -v "proto kernel" | $sl_grepcmd "^$sl_igwip " | $sl_awkcmd '{print $3}'` #head je tam proto ze se pro prespolni(a bgp) muze objevit vice rout s ruznou metrikou tak vezmem jen prvni (head)

#s nejmensi metrikou (sort)

sl_igwgt=`$sl_ipcmd ro ls | $sl_grepcmd -v "proto kernel" | $sl_grepcmd "^$sl_igwip " | sort | $sl_awkcmd '{print $3}' | head -n 1`

# equal cost multipath detection - just first IP is taken as way to igw # equal cost multipath detection - just first IP is taken as way to igw

if [ "$sl_igwgt x" = "zebra x" ] if [ "$sl_igwgt x" = "zebra x" ]

then then

sl_igwgt=`$sl_ipcmd ro ls | $sl_grepcmd -A 1 "^$sl_igwip " | $sl_grepcmd "nexthop" | $sl_awkcmd '{print $3}'` sl_igwgt=`$sl_ipcmd ro ls | $sl_grepcmd -A 1 "^$sl_igwip " | $sl_grepcmd "nexthop" | $sl_awkcmd '{print $3}'`

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if [ "$sl_igwogt x" = "$sl_igwgt x" ] if [ "$sl_igwogt x" = "$sl_igwgt x" ]

then then

if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will not be changed and default is $sl_igwgt" ; fi if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will not be changed and default is $sl_igwgt" ; fi

else else

#the new default is different so we will flush the table, fill new default #the new default is different so we will flush the table, fill new default

if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will be $sl_igwogt rewritten to default $sl_igwgt" ; fi if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will be rewritten to default $sl_igwgt" ; fi

#flushing old default route in the table #flushing old default route in the table

$sl_ipcmd ro fl ta $sl_igwn $sl_ipcmd ro fl ta $sl_igwn

#filling new default #filling new default

$sl_ipcmd ro add 0.0.0.0/1 via $sl_igwgt ta $sl_igwn $sl_ipcmd ro add 0.0.0.0/1 via $sl_igwgt ta $sl_igwn

$sl_ipcmd ro add 128.0.0.0/1 via $sl_igwgt ta $sl_igwn $sl_ipcmd ro add 128.0.0.0/1 via $sl_igwgt ta $sl_igwn

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s_getcfg s_getcfg

fi fi

s_mktables s_mktables

s_filltables s_filltables

#toto je pro ladici ucely

#echo $sl_difftbl #echo $sl_difftbl

#echo $sl_diffcfg #echo $sl_diffcfg

#echo $sl_diffigw #echo $sl_diffigw

#echo $scm_force #echo $scm_force

#exit 0 #exit 0

#flushing and filling rules is done only when #flushing and filling rules is done only when

#new table is created #new table is created

#config is changed #config is changed

#some igw dissapears or appears #some igw dissapears or appears

#-force command line parameter was used #-force command line parameter was used

Rev 14		Rev 15
Line 1...		Line 1...
`#!/bin/bash`		`#!/bin/bash`
`# author : Petr Simandl www.simandl.cz`		`# author : Petr Simandl www.simandl.cz`
`# release date : 20/10/2006`		`# release date : 1/11/2006`
`# name : sedlo`		`# name : sedlo`
`# description : dynamic side routing tables tool`		`# description : dynamic side routing tables tool`
`# license : GPL`		`# license : GPL`

`sl_version="0.0.4pre5"`		`sl_version="0.0.4pre6"`

`PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin`		`PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin`

`sl_nmcnf="sedlo.conf"`		`sl_nmcnf="sedlo.conf"`
`sl_sedlocnf="/etc/$sl_nmcnf"`		`sl_sedlocnf="/etc/$sl_nmcnf"`
Line 143...		Line 143...
`for sl_igw in $sl_igws`		`for sl_igw in $sl_igws`
`do`		`do`
sl_igwn=`echo $sl_igw \| $sl_awkcmd -F '*' '{print $1}'`		sl_igwn=`echo $sl_igw \| $sl_awkcmd -F '*' '{print $1}'`
sl_igwip=`echo $sl_igw \| $sl_awkcmd -F '*' '{print $2}'`		sl_igwip=`echo $sl_igw \| $sl_awkcmd -F '*' '{print $2}'`
sl_igwtype=`echo $sl_igw \| $sl_awkcmd -F '*' '{print $3}'`		sl_igwtype=`echo $sl_igw \| $sl_awkcmd -F '*' '{print $3}'`

`#oprava falesneho routovani na lokalni iface - pokud jsme lokalni igw tak se nema najit ip`		`#oprava falesneho routovani na lokalni iface - pokud jsme lokalni igw tak se nema najit ip`
`#protoze cesta dal neni - jsme totiz uz na lokalnim iface`		`#protoze cesta dal neni - jsme totiz uz na lokalnim iface`
sl_igwgt=`$sl_ipcmd ro ls \| $sl_grepcmd -v "proto kernel" \| $sl_grepcmd "^$sl_igwip " \| $sl_awkcmd '{print $3}'`		`#head je tam proto ze se pro prespolni(a bgp) muze objevit vice rout s ruznou metrikou tak vezmem jen prvni (head)`
		`#s nejmensi metrikou (sort)`
		sl_igwgt=`$sl_ipcmd ro ls \| $sl_grepcmd -v "proto kernel" \| $sl_grepcmd "^$sl_igwip " \| sort \| $sl_awkcmd '{print $3}' \| head -n 1`

`# equal cost multipath detection - just first IP is taken as way to igw`		`# equal cost multipath detection - just first IP is taken as way to igw`
`if [ "$sl_igwgt x" = "zebra x" ]`		`if [ "$sl_igwgt x" = "zebra x" ]`
`then`		`then`
sl_igwgt=`$sl_ipcmd ro ls \| $sl_grepcmd -A 1 "^$sl_igwip " \| $sl_grepcmd "nexthop" \| $sl_awkcmd '{print $3}'`		sl_igwgt=`$sl_ipcmd ro ls \| $sl_grepcmd -A 1 "^$sl_igwip " \| $sl_grepcmd "nexthop" \| $sl_awkcmd '{print $3}'`
Line 205...		Line 208...
`if [ "$sl_igwogt x" = "$sl_igwgt x" ]`		`if [ "$sl_igwogt x" = "$sl_igwgt x" ]`
`then`		`then`
`if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will not be changed and default is $sl_igwgt" ; fi`		`if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will not be changed and default is $sl_igwgt" ; fi`
`else`		`else`
`#the new default is different so we will flush the table, fill new default`		`#the new default is different so we will flush the table, fill new default`
`if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will be $sl_igwogt rewritten to default $sl_igwgt" ; fi`		`if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will be rewritten to default $sl_igwgt" ; fi`
`#flushing old default route in the table`		`#flushing old default route in the table`
`$sl_ipcmd ro fl ta $sl_igwn`		`$sl_ipcmd ro fl ta $sl_igwn`
`#filling new default`		`#filling new default`
`$sl_ipcmd ro add 0.0.0.0/1 via $sl_igwgt ta $sl_igwn`		`$sl_ipcmd ro add 0.0.0.0/1 via $sl_igwgt ta $sl_igwn`
`$sl_ipcmd ro add 128.0.0.0/1 via $sl_igwgt ta $sl_igwn`		`$sl_ipcmd ro add 128.0.0.0/1 via $sl_igwgt ta $sl_igwn`
Line 451...		Line 454...
`s_getcfg`		`s_getcfg`
`fi`		`fi`

`s_mktables`		`s_mktables`
`s_filltables`		`s_filltables`
		`#toto je pro ladici ucely`
`#echo $sl_difftbl`		`#echo $sl_difftbl`
`#echo $sl_diffcfg`		`#echo $sl_diffcfg`
`#echo $sl_diffigw`		`#echo $sl_diffigw`
`#echo $scm_force`		`#echo $scm_force`
`#exit 0`		`#exit 0`

`#flushing and filling rules is done only when`		`#flushing and filling rules is done only when`
`#new table is created`		`#new table is created`
`#config is changed`		`#config is changed`
`#some igw dissapears or appears`		`#some igw dissapears or appears`
`#-force command line parameter was used`		`#-force command line parameter was used`