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Merge pull request #57 from mariux64/add-uvpn
Add uvpn
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| #!/bin/bash | ||
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| ip=/sbin/ip | ||
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| ### | ||
| ### DHCPv4 Handlers | ||
| ### | ||
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| if [ x$new_broadcast_address != x ]; then | ||
| new_broadcast_arg="broadcast $new_broadcast_address" | ||
| fi | ||
| if [ x$old_broadcast_address != x ]; then | ||
| old_broadcast_arg="broadcast $old_broadcast_address" | ||
| fi | ||
| if [ x$new_subnet_mask != x ]; then | ||
| new_subnet_arg="netmask $new_subnet_mask" | ||
| fi | ||
| if [ x$old_subnet_mask != x ]; then | ||
| old_subnet_arg="netmask $old_subnet_mask" | ||
| fi | ||
| if [ x$alias_subnet_mask != x ]; then | ||
| alias_subnet_arg="netmask $alias_subnet_mask" | ||
| fi | ||
| if [ x$new_interface_mtu != x ]; then | ||
| mtu_arg="mtu $new_interface_mtu" | ||
| fi | ||
| if [ x$IF_METRIC != x ]; then | ||
| metric_arg="metric $IF_METRIC" | ||
| fi | ||
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| if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \ | ||
| [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then | ||
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| if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \ | ||
| [ x$alias_ip_address != x$old_ip_address ]; then | ||
| # Possible new alias. Remove old alias. | ||
| ifconfig $interface:0- inet 0 | ||
| fi | ||
| if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then | ||
| # IP address changed. Bringing down the interface will delete all routes, | ||
| # and clear the ARP cache. | ||
| ifconfig $interface inet 0 down | ||
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| fi | ||
| if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \ | ||
| [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then | ||
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| ifconfig $interface inet $new_ip_address $new_subnet_arg \ | ||
| $new_broadcast_arg $mtu_arg | ||
| # Add a network route to the computed network address. | ||
| for router in $new_routers; do | ||
| if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then | ||
| ip route add $router dev $interface | ||
| fi | ||
| ip route add default via $router dev $interface $metric_arg | ||
| done | ||
| else | ||
| # we haven't changed the address, have we changed other options | ||
| # that we wish to update? | ||
| if [ x$new_routers != x ] && [ x$new_routers != x$old_routers ] ; then | ||
| # if we've changed routers delete the old and add the new. | ||
| for router in $old_routers; do | ||
| ip route del default via $router | ||
| done | ||
| for router in $new_routers; do | ||
| if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then | ||
| ip route add $router dev $interface | ||
| fi | ||
| ip route add default via $router dev $interface $metric_arg | ||
| done | ||
| fi | ||
| fi | ||
| if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ]; | ||
| then | ||
| ifconfig $interface:0- inet 0 | ||
| ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg | ||
| ip route add $alias_ip_address dev $interface:0 | ||
| fi | ||
| exit 0 | ||
| fi | ||
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| if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \ | ||
| || [ x$reason = xSTOP ]; then | ||
| if [ x$alias_ip_address != x ]; then | ||
| # Turn off alias interface. | ||
| ifconfig $interface:0- inet 0 | ||
| fi | ||
| if [ x$old_ip_address != x ]; then | ||
| # Shut down interface, which will delete routes and clear arp cache. | ||
| ifconfig $interface inet 0 down | ||
| fi | ||
| if [ x$alias_ip_address != x ]; then | ||
| ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg | ||
| ip route add $alias_ip_address dev $interface:0 | ||
| fi | ||
| exit 0 | ||
| fi | ||
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| if [ x$reason = xTIMEOUT ]; then | ||
| if [ x$alias_ip_address != x ]; then | ||
| ifconfig $interface:0- inet 0 | ||
| fi | ||
| ifconfig $interface inet $new_ip_address $new_subnet_arg \ | ||
| $new_broadcast_arg $mtu_arg | ||
| set $new_routers | ||
| if ping -q -c 1 $1; then | ||
| if [ x$new_ip_address != x$alias_ip_address ] && \ | ||
| [ x$alias_ip_address != x ]; then | ||
| ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg | ||
| ip route add $alias_ip_address dev $interface:0 | ||
| fi | ||
| for router in $new_routers; do | ||
| if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then | ||
| ip route add $router dev $interface | ||
| fi | ||
| ip route add default via $router dev $interface $metric_arg | ||
| done | ||
| exit 0 | ||
| fi | ||
| ifconfig $interface inet 0 down | ||
| exit 1 | ||
| fi | ||
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| exit 0 |
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