[package] ppp: rename 20-usb-modem to 20-atm-modem

[openwrt.git] / package / ppp / files / ppp.sh

diff --git a/package/ppp/files/ppp.sh b/package/ppp/files/ppp.sh
index a162b97..6905113 100644 (file)
--- a/package/ppp/files/ppp.sh
+++ b/package/ppp/files/ppp.sh
@@ -1,27 +1,139 @@
-scan_ppp() {
-       config_get ifname "$1" ifname
-       pppdev="${pppdev:-0}"
-       config_set "$1" device "$ifname"
-       config_set "$1" ifname "ppp$pppdev"
-       config_set "$1" unit "$pppdev"
+stop_interface_ppp() {
+       local cfg="$1"
+
+       local proto
+       config_get proto "$cfg" proto
+
+       local ifname
+       config_get ifname "$cfg" ifname
+
+       local link="${proto:-ppp}-$ifname"
+       [ -f "/var/run/ppp-${link}.pid" ] && {
+               local pid="$(head -n1 /var/run/ppp-${link}.pid 2>/dev/null)"
+               grep -qs pppd "/proc/$pid/cmdline" && kill -TERM $pid
+       }
 }
 
 start_pppd() {
        local cfg="$1"; shift
+
+       local proto
+       config_get proto "$cfg" proto
+
+       # unique link identifier
+       local link="${proto:-ppp}-$cfg"
+
+       # make sure only one pppd process is started
+       lock "/var/lock/ppp-${link}"
+       local pid="$(head -n1 /var/run/ppp-${link}.pid 2>/dev/null)"
+       [ -d "/proc/$pid" ] && grep pppd "/proc/$pid/cmdline" 2>/dev/null >/dev/null && {
+               lock -u "/var/lock/ppp-${link}"
+               return 0
+       }
+
+       # Workaround: sometimes hotplug2 doesn't deliver the hotplug event for creating
+       # /dev/ppp fast enough to be used here
+       [ -e /dev/ppp ] || mknod /dev/ppp c 108 0
+
+       local device
        config_get device "$cfg" device
-       config_get unit "$cfg" unit
+
+       local username
        config_get username "$cfg" username
+
+       local password
        config_get password "$cfg" password
+
+       local keepalive
        config_get keepalive "$cfg" keepalive
-       config_get demand "$cfg" demand
-       [ -n "$demand" ] && echo "nameserver 1.1.1.1" > /tmp/resolv.conf
+
+       local connect
+       config_get connect "$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=""
+
+       local interval="${keepalive##*[, ]}"
+       [ "$interval" != "$keepalive" ] || interval=5
+
+       local dns
+       config_get dns "$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=""
+               for dns in $dns; do
+                       echo "nameserver $dns" >> /tmp/resolv.conf.auto
+               done
+       }
+
+       local demand
+       config_get_bool demand "$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 5 lcp-echo-failure $keepalive} \
-               ${demand:+precompiled-active-filter /etc/ppp/filter demand idle }${demand:-persist} \
-               usepeerdns \
-               defaultroute \
-               replacedefaultroute \
+               ${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}} \
+               $demandargs \
+               $peerdns \
+               $defaultroute \
                ${username:+user "$username" password "$password"} \
-               linkname "$cfg" \
-               ipparam "$cfg"
+               linkname "$link" \
+               ipparam "$cfg" \
+               ifname "$link" \
+               ${connect:+connect "$connect"} \
+               ${disconnect:+disconnect "$disconnect"} \
+               ${ipv6} \
+               ${pppd_options}
+
+       lock -u "/var/lock/ppp-${link}"
+}
+
+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 $mtu \
+               "$device"
 }
+