#! /bin/bash

#

# ifup-ippp

# 

# This script is normally called from the ifup script when it detects an ippp device.

. /etc/init.d/functions

cd /etc/sysconfig/network-scripts

. ./network-functions

# Get global network configuration

[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network

GATEWAY=""

# set device

CONFIG=$1

[ -f "${CONFIG}" ] || CONFIG=ifcfg-${1}

source_config

if [ "${2}" = "boot" -a "${ONBOOT}" = "no" ]; then

    exit

fi

if [ ! -f /var/lock/subsys/isdn ] && [ -x /etc/init.d/isdn ] ; then

    /etc/init.d/isdn start

fi

# check that ipppd is available for syncppp 

if [ "$ENCAP" = "syncppp" ]; then

    if [ ! -x /sbin/ipppd ] && [ ! -x /usr/sbin/ipppd ] ; then

        /usr/bin/logger -p daemon.info -t ifup-ippp "ipppd does not exist or is not executable"

        exit 1

    fi

fi

# check that isdnctrl is available

if [ ! -x /sbin/isdnctrl ] && [ ! -x /usr/sbin/isdnctrl ] ; then

    /usr/bin/logger -p daemon.info -t ifup-ippp "isdnctrl does not exist or is not executable"

    exit 1

fi

# check all ISDN devices

if ! isdnctrl list all >/dev/null 2>&1 ; then

    /usr/bin/logger -p daemon.info -t ifup-ippp "cannot list ISDN devices"

    exit 1

fi

# check if device already is configured

isdnctrl list $DEVICE >/dev/null 2>&1 && exit 0

function log_echo()

{

    /usr/bin/logger -p daemon.info -t ifup-ippp $"$*"

}

function log_isdnctrl()

{

    /usr/bin/logger -p daemon.info -t ifup-ippp isdnctrl $*

    isdnctrl $* >/dev/null 2>&1 || exit 1

}

function create_option_file()

{

    umask 066

    echo "$1" > /etc/ppp/ioption-secret-$DEVICE

    umask 022

}

function start_ibod()

{

    # don't start ibod, if it's running

    [ -f /var/lock/subsys/ibod ] && return

    device=$1

    if [ -f /etc/isdn/ibod.cf ] && [ -x /usr/sbin/ibod ] ; then

        ibod $device &

        pid=$(pidof ibod)

        [ -n "$pid" ] && touch /var/lock/subsys/ibod

    fi

}

function addprovider()

{

    options=

    if [ -z "$PHONE_OUT" ]; then

        log_echo "Error: $1: no outgoing phone number set"

        return 1

    fi

    # set the encapsulation mode

    [ -z "$ENCAP" ] && ENCAP="syncppp"

    # set the dial mode

    [ -z "$DIALMODE" ] && DIALMODE="off"

    [ "$AUTH" = "none" -o "$AUTH" = "noauth" -o -z "$AUTH" ] && AUTH="-pap -chap"

    # set layer-2/3 protocol 

    [ -z "$L2_PROT" ] && L2_PROT="hdlc"

    [ -z "$L3_PROT" ] && L3_PROT="trans"

    # check local/remote IP

    [ -z "$IPADDR" ] && IPADDR="0.0.0.0"

    [ -z "$GATEWAY" ] && GATEWAY="0.0.0.0"

    # set default route

    [ "$DEFROUTE" = "yes" ] && options="$options defaultroute deldefaultroute"

    # set authentication

    _auth=$(echo "$AUTH" | sed 's/[a-z -]*//g')

    if [ -n "$_auth" ]; then

        if [ -z "$USER" -a "$DIALIN" != "on" ]; then

            log_echo " Error: $1 (syncppp) user is not set"

            return 1

        fi

        if [ "$DIALIN" != "on" ]; then

            # we should hide the user name, so i add user name to option file.

            if [ "$AUTH" = "-pap +chap" ]; then

                create_option_file "name \"$USER\""

            else

                create_option_file "user \"$USER\""

            fi

            options="$options file /etc/ppp/ioption-secret-$DEVICE"

        fi

        # authentication options:

        # +pap and/or +chap does not work correct by dialout - remove

        # them if it's configured as dialout

        [ "$DIALIN" = "on" ] || AUTH=$(echo "$AUTH" | sed 's/+[a-z]*//g')

    fi

    # add ISDN device 

    log_isdnctrl addif $DEVICE

    # set local MSN

    [ -z "$MSN" ]  || log_isdnctrl eaz $DEVICE $MSN

    # set dialout numbers

    if echo $COUNTRYCODE | grep ":" >/dev/null 2>&1 ; then

        COUNTRYCODE="$(echo $COUNTRYCODE | cut -f 2 -d ':')"

        [ "$COUNTRYCODE" = "0" ] && COUNTRYCODE=

    else

        COUNTRYCODE=

    fi

    for i in $PHONE_OUT; do

        log_isdnctrl addphone $DEVICE out $COUNTRYCODE$PREFIX$AREACODE$i

    done

    for i in $PHONE_IN; do

        log_isdnctrl addphone $DEVICE in $i

    done

    # set layer-2/3 protocol

    log_isdnctrl l2_prot $DEVICE $L2_PROT

    log_isdnctrl l3_prot $DEVICE $L3_PROT

    # set encapsulation

    log_isdnctrl encap $DEVICE $ENCAP

    # set dialmode

    log_isdnctrl dialmode $DEVICE $DIALMODE

    [ -n "$SECURE" ] && log_isdnctrl secure $DEVICE $SECURE

    [ -n "$HUPTIMEOUT" ] && log_isdnctrl huptimeout $DEVICE $HUPTIMEOUT

    [ -n "$CHARGEHUP" ] && log_isdnctrl chargehup $DEVICE $CHARGEHUP

    [ -n "$CHARGEINT" ] && log_isdnctrl chargeint $DEVICE $CHARGEINT

    [ -n "$IHUP" ] && log_isdnctrl ihup $DEVICE $IHUP

    # set the number of dial atempts for each number

    [ -n "$DIALMAX" ] && log_isdnctrl dialmax $DEVICE $DIALMAX

    # set callback

    if [ "$CALLBACK" = "out" -o "$CALLBACK" = "in" ] ; then

        log_isdnctrl callback $DEVICE $CALLBACK

    else

        log_isdnctrl callback $DEVICE off

    fi

    [ -n "$CBDELAY" ] && log_isdnctrl cbdelay $DEVICE $CBDELAY

    [ -n "$CBHUP" ] && log_isdnctrl cbhup $DEVICE $CBHUP

    options="$options ipparam $DEVNAME"

    [ "$ENCAP" = "syncppp" ] && log_isdnctrl pppbind $DEVICE

    if [ "$IPADDR" = "0.0.0.0" ]; then

        options="$options ipcp-accept-local"

    else

        if [ "$DIALIN" != "on" ]; then

            options="$options noipdefault"

        fi

    fi

    # Add device

    options="$options /dev/$DEVICE"

    # set channel bundling

    if [ "$BUNDLING" = "yes" -o "$BUNDLING" = "on" ] && [ -n "$SLAVE_DEVICE" ]; then

        [ -z "$SLAVE_MSN" ] && SLAVE_MSN="$MSN"

        [ -z "$SLAVE_PHONE_OUT" ] && SLAVE_PHONE_OUT="$PHONE_OUT"

        [ -z "$SLAVE_PHONE_IN" ] && SLAVE_PHONE_IN="$PHONE_IN"

        [ -z "$SLAVE_HUPTIMEOUT" ] && SLAVE_HUPTIMEOUT="$HUPTIMEOUT"

        [ -z "$SLAVE_CHARGEHUP" ] && SLAVE_CHARGEHUP="$CHARGEHUP"

        [ -z "$SLAVE_CHARGEINT" ] && SLAVE_CHARGEINT="$CHARGEINT"

        [ -z "$SLAVE_CBHUP" ] && SLAVE_CBHUP="$CBHUP"

        [ -z "$SLAVE_IHUP" ] && SLAVE_IHUP="$IHUP"

        [ -z "$SLAVE_DIALMAX" ] && SLAVE_DIALMAX="$DIALMAX"

        [ -z "$SLAVE_CALLBACK" ] && SLAVE_CALLBACK="$CALLBACK"

        [ -z "$SLAVE_CBDELAY" ] && SLAVE_CBDELAY="$CBDELAY"

        if [ "$DIALIN" != "on" ] ; then

            [ -z "$SLAVE_DIALMODE" ] && SLAVE_DIALMODE="auto"

        else

            # Master should not dial by default on incoming MPPP

            [ -z "$SLAVE_DIALMODE" ] && SLAVE_DIALMODE="$DIALMODE"

        fi

        slave=$SLAVE_DEVICE

        options="$options /dev/$slave +mp"

        # Create slave and set options

        log_isdnctrl addslave $DEVICE $slave

        [ -z $SLAVE_MSN ] || log_isdnctrl eaz $slave $SLAVE_MSN

        # set phone number

        for i in $SLAVE_PHONE_OUT; do

            log_isdnctrl addphone $slave out $COUNTRYCODE$PREFIX$AREACODE$i

        done

        for i in $SLAVE_PHONE_IN; do

            log_isdnctrl addphone $slave in $i

        done

        # set layer-2/3 protocol

        log_isdnctrl l2_prot $slave $L2_PROT

        log_isdnctrl l3_prot $slave $L3_PROT

        # set encapsulation

        log_isdnctrl encap $slave $ENCAP

        # set dial mode

        log_isdnctrl dialmode $slave $SLAVE_DIALMODE

        [ -n "$SECURE" ] && log_isdnctrl secure $slave $SECURE

        [ -n "$SLAVE_HUPTIMEOUT" ] && log_isdnctrl huptimeout $slave $SLAVE_HUPTIMEOUT

        [ -n "$SLAVE_CHARGEHUP" ] && log_isdnctrl chargehup $slave $SLAVE_CHARGEHUP

        [ -n "$SLAVE_CHARGEINT" ] && log_isdnctrl chargeint $slave $SLAVE_CHARGEINT

        [ -n "$SLAVE_IHUP" ] && log_isdnctrl ihup $slave $SLAVE_IHUP

        [ -n "$SLAVE_DIALMAX" ] && log_isdnctrl dialmax $slave $SLAVE_DIALMAX

        # set callback

        [ -n "$SLAVE_CBHUP" ] && log_isdnctrl cbhup $slave $SLAVE_CBHUP

        [ -n "$SLAVE_CALLBACK" ] || SLAVE_CALLBACK="off"

        log_isdnctrl callback $slave $SLAVE_CALLBACK

        [ -n "$SLAVE_CBDELAY" ] && log_isdnctrl cbdelay $DEVICE $SLAVE_CBDELAY

        # options for master device

        [ -n "$SLAVE_DELAY" ] && log_isdnctrl sdelay $DEVICE $SLAVE_DELAY

        [ -n "$SLAVE_TRIGGER" ] && log_isdnctrl trigger $DEVICE $SLAVE_TRIGGER

    fi

    if [ "$GATEWAY" = "0.0.0.0" ]; then

        if [ "$DIALIN" != "on" ]; then

            options="$options ipcp-accept-remote"

        fi

        options="$IPADDR:$GATEWAY $options"

    else

        options="$options $IPADDR:$GATEWAY"

    fi

    # Van Jacobson style TCP/IP header compression and

    # VJ connection-ID compression

    [ "$VJ" = "off" ] && options="$options -vj"

    [ "$VJCCOMP" = "off" ] && options="$options -vjccomp"

    # Address/Control compression, protocol field compression,

    [ "$AC" = "off" ] && options="$options -ac"

    [ "$PC" = "off" ] && options="$options -pc"

    # BSD-Compression scheme

    if [ "$BSDCOMP" = "on" ] ; then

        options="$options bsdcomp 9,9"

    else

        options="$options -bsdcomp"

    fi

    # Stac compression

    if [ "$LZS" = "on" ] ; then

        # supports LZS check mode 3 and 4

        [ -n "$LZS_MODE" ] || LZS_MODE="4"

        [ "$LZS_MODE" = "3" ] && options="$options lzs 1"

        [ "$LZS_MODE" = "4" ] && options="$options lzs 1:4"

    fi

    # Set max receive and max transmit units

    [ -n "$MRU" ] && options="$options mru $MRU"

    [ -n "$MTU" ] && options="$options mtu $MTU"

    # set CBCP protocoll

    if [ "$CBCP" = "on" ] ; then

        if [ -n "$CBCP_MSN" ] ; then

            # User managed callback

            options="$options callback $CBCP_MSN"

        else

            # admin managed callback, it's enabled by default

            options="$options callback 6"

        fi

    else

        # Disable CBCP

        options="$options -callback-cbcp"

    fi

    # set CCP protocoll

    [ "$CCP" = "off" ] && options="$options noccp"

    # set host name

    [ -n "$ISDN_HOSTNAME" ] && options="$options remotename $ISDN_HOSTNAME"

    # Set authentication

    for i in $AUTH ; do

        options="$options $i"

    done

    # add ppp options

    for i in $PPPOPTIONS ; do

        options="$options $i"

    done

    # check dns entry

    if [ -z "$DNS1" -a -z "$DNS2" ]; then

        options="$options ms-get-dns"

    else

        [ -n "$DNS1" ] && options="$options ms-dns $DNS1"

        [ -n "$DNS2" ] && options="$options ms-dns $DNS2"

    fi

    # set debug 

    [ "$DEBUG" = "yes" ] && options="-d $options"

    # set netmask, if available

    [ -n "$NETMASK" ] && {

        val=$(ipcalc --prefix $IPADDR $NETMASK)

        pfx=${val##PREFIX=}

    }

    # activate ISDN device

    /usr/bin/logger -p daemon.info -t ifup-ippp "ip addr add $IPADDR peer $GATEWAY${pfx:/$pfx} dev $DEVICE"

    ip addr add $IPADDR peer $GATEWAY${pfx:/$pfx} dev $DEVICE

    set_link_up $DEVICE

    if [ "$ENCAP" = "syncppp" ]; then

        # start ipppd daemon

        /usr/bin/logger -p daemon.info -t ifup-ippp "ipppd $options $netmask"

        ipppd $options $netmask >/dev/null 2>&1

        # start ibod daemon

        if [ "$DIALIN" != "on" ]; then

            [ "$BUNDLING" = "yes" -o "$BUNDLING" = "on" ] && [ -n "$SLAVE_DEVICE" ] && start_ibod $DEVICE

        fi

    fi

    # set default gateway for dial on demand

    if [ "$DIALMODE" = "auto" ] ; then

        echo 1 > /proc/sys/net/ipv4/ip_dynaddr

        if  [ "$DEFROUTE" = "yes" ] ; then

            if [ "$GATEWAY" = "0.0.0.0" ]; then

                ip route replace default ${METRIC:+metric $METRIC} dev ${DEVICE} >/dev/null 2>&1

            else

                ip route replace default ${METRIC:+metric $METRIC} via ${GATEWAY} dev ${DEVICE} >/dev/null 2>&1

            fi

        fi

    fi

    # Setup IPv6

    if ! is_false "$IPV6INIT" && ! [[ -z "$IPV6ADDR" ]]; then

        # Native IPv6 use of device configured, check of encapsulation required    

        if [ "$ENCAP" = "syncppp" ]; then

            echo $"Warning: ipppd (kernel 2.4.x and below) doesn't support IPv6 using encapsulation 'syncppp'"

        elif [ "$ENCAP" = "rawip" ]; then

            echo $"Warning: link doesn't support IPv6 using encapsulation 'rawip'"

        fi

    fi

    /etc/sysconfig/network-scripts/ifup-ipv6 $CONFIG

}

addprovider || exit 1

exit 0