[package] pppd:

	- localize variables in setup script
	- implement demand option as true boolean so that 0 actually disables it
	- don't overwrite user supplied dns servers if demand is enabled
	- toggle peerdns default value, use 1 if no user supplied dns server is set, 0 otherwise
	- reset resolv.conf.auto before setting up dns

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21280 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/ppp/files/ppp.sh b/package/ppp/files/ppp.sh
index 62f584f..c644002 100644 (file)
--- a/package/ppp/files/ppp.sh
+++ b/package/ppp/files/ppp.sh
@@ -65,40 +65,80 @@ start_pppd() {
        # /dev/ppp fast enough to be used here
        [ -e /dev/ppp ] || mknod /dev/ppp c 108 0
 
+       local device
        config_get device "$cfg" device
+
+       local unit
        config_get unit "$cfg" unit
+
+       local username
        config_get username "$cfg" username
+
+       local password
        config_get password "$cfg" password
+
+       local keepalive
        config_get keepalive "$cfg" keepalive
 
+       local connect
        config_get connect "$cfg" connect
+
+       local disconnect
        config_get disconnect "$cfg" disconnect
+
+       local pppd_options
        config_get pppd_options "$cfg" pppd_options
+
+       local defaultroute
        config_get_bool defaultroute "$cfg" defaultroute 1
        [ "$defaultroute" -eq 1 ] && defaultroute="defaultroute replacedefaultroute" || defaultroute=""
 
-       interval="${keepalive##*[, ]}"
+       local interval="${keepalive##*[, ]}"
        [ "$interval" != "$keepalive" ] || interval=5
 
-       config_get_bool peerdns "$cfg" peerdns 1
-       [ "$peerdns" -eq 1 ] && peerdns="usepeerdns" || {
+       local dns
+       config_get dns "$config" dns
+
+       local has_dns=0
+       local peer_default=1
+       [ -n "$dns" ] && {
+               has_dns=1
+               peer_default=0
+       }
+
+       local peerdns
+       config_get_bool peerdns "$cfg" peerdns $peer_default
+
+       echo -n "" > /tmp/resolv.conf.auto
+
+       [ "$peerdns" -eq 1 ] && {
+               peerdns="usepeerdns"
+       } || {
                peerdns=""
-               config_get dns "$config" dns
                for dns in $dns; do
-                       grep -q "$dns" /tmp/resolv.conf.auto 2>/dev/null || \
-                               echo "nameserver $dns" >> /tmp/resolv.conf.auto
+                       echo "nameserver $dns" >> /tmp/resolv.conf.auto
                done
        }
 
-       config_get demand "$cfg" demand
-       [ -n "$demand" ] && echo "nameserver 1.1.1.1" > /tmp/resolv.conf.auto
+       local demand
+       config_get_bool demand "$cfg" demand 0
 
+       local demandargs
+       [ "$demand" -eq 1 ] && {
+               demandargs="precompiled-active-filter /etc/ppp/filter demand idle"
+               [ "$has_dns" -eq 0 ] && \
+                       echo "nameserver 1.1.1.1" > /tmp/resolv.conf.auto
+       } || {
+               demandargs="persist"
+       }
+
+       local ipv6
        config_get_bool ipv6 "$cfg" ipv6 0
        [ "$ipv6" -eq 1 ] && ipv6="+ipv6" || ipv6=""
 
        /usr/sbin/pppd "$@" \
                ${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}} \
-               ${demand:+precompiled-active-filter /etc/ppp/filter demand idle }${demand:-persist} \
+               $demandargs \
                $peerdns \
                $defaultroute \
                ${username:+user "$username" password "$password"} \
@@ -117,9 +157,12 @@ setup_interface_ppp() {
        local iface="$1"
        local config="$2"
 
+       local device
        config_get device "$config" device
 
+       local mtu
        config_get mtu "$config" mtu
+
        mtu=${mtu:-1492}
        start_pppd "$config" \
                mtu $mtu mru $mtu \