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Fix pptp handling of routes to server.

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The existing code is fairly broken. It assumes you're using Legacy IP, and
it assumes that the server is reachable via your default route. Via the
first default route in the 'route -n' output, in fact, regardless of metric.

Fix all those problems by using 'ip route get' to really find the *current*
route to the server, and install a host-specific route to match.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31565 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2012-05-03 09:39:01 +00:00
parent f34832554e
commit fe8fbd1c05
2 changed files with 12 additions and 14 deletions
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2
package/pptp/Makefile
View File

@ -23,7 +23,7 @@ define Package/pptp
TITLE:=PPTP client
MAINTAINER:=Jo-Philipp Wich <xm@subsignal.org>
URL:=http://pptpclient.sourceforge.net/
DEPENDS:=+ppp +kmod-gre +resolveip
DEPENDS:=+ppp +kmod-gre +resolveip +ip
endef
define Package/pptp/description

24
package/pptp/files/pptp.sh
View File

@ -1,5 +1,6 @@
find_gw() {
route -n | awk '$1 == "0.0.0.0" { print $2; exit }'
find_route() {
ip route get $1 | sed -e 's/ /\n/g' | \
sed -ne '1p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p}'
}
scan_pptp() {
@ -9,7 +10,7 @@ scan_pptp() {
stop_interface_pptp() {
stop_interface_ppp "$1"
for ip in $(uci_get_state network "$1" serv_addrs); do
route del -host "$ip" 2>/dev/null
ip route del "$ip" 2>/dev/null
done
}
@ -36,16 +37,13 @@ setup_interface_pptp() {
done
sleep 1
local gw="$(find_gw)"
[ -n "$gw" ] && {
local serv_addrs=""
for ip in $(resolveip -4 -t 3 "$server"); do
append serv_addrs "$ip"
route delete -host "$ip" 2>/dev/null
route add -host "$ip" gw "$gw"
done
uci_toggle_state network "$config" serv_addrs "$serv_addrs"
}
local serv_addrs=""
for ip in $(resolveip -t 3 "${server}"); do
append serv_addrs "$ip"
ip route replace $(find_route $ip)
done
uci_toggle_state network "$config" serv_addrs "$serv_addrs"
}
# fix up the netmask
config_get netmask "$config" netmask