ppp/ifup-ppp

#! /bin/bash

. /etc/init.d/functions

cd /etc/sysconfig/network-scripts
. ./network-functions

# ifup-post for PPP is handled through /etc/ppp/ip-up
if [ "${1}" = daemon ] ; then
  # we've been called from ppp-watch, so don't invoke it for persistence
  shift
else
  # just in case a full path to the configuration file is passed in
  CONFIG=${1##*/} # CONFIG=$(basename $1)
  [ -f "${CONFIG}" ] || CONFIG=ifcfg-${1}
  source_config
  # don't start ppp-watch by xDSL
  if [ "${DEMAND}" != yes -a "$TYPE" != "xDSL" ] ; then
    # let ppp-watch do the right thing
    exec /sbin/ppp-watch "${CONFIG##ifcfg-}" "$2"
  fi
fi

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

if [ -z "${DISCONNECTTIMEOUT}" ]; then
  DISCONNECTTIMEOUT=2
fi

if [ -z "${RETRYTIMEOUT}" ]; then
  RETRYTIMEOUT=30
fi

if [ -z "${IDLETIMEOUT}" ]; then
  IDLETIMEOUT=600
fi

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

[ -x /usr/sbin/pppd ] || {
  echo $"pppd does not exist or is not executable"
  echo $"ifup-ppp for ${DEVICE} exiting"
  /usr/bin/logger -p daemon.info -t ifup-ppp \
    $"pppd does not exist or is not executable for ${DEVICE}"
  exit 1
}

# check that xDSL connection
if [ "$TYPE" = "xDSL" ] ; then
    if [ -x /usr/sbin/adsl-start ] ; then
        adsl-start /etc/sysconfig/network-scripts/$CONFIG
        exit $?
    else
        /usr/bin/logger -p daemon.info -t ifup-ppp \
            $"adsl-start does not exist or is not executable for ${DEVICE}"
        exit 1
    fi
fi

PEERCONF=/etc/ppp/peers/${DEVNAME}

if [ "${DEBUG}" = "yes" ]; then
  CHATDBG="-v"
fi

if [ ! -f ${PEERCONF} ]; then
  if [ -z "${WVDIALSECT}" ] ; then
    CHATSCRIPT=/etc/sysconfig/network-scripts/chat-${DEVNAME}
    [ -f ${CHATSCRIPT} ] || {
     echo $"/etc/sysconfig/network-scripts/chat-${DEVNAME} does not exist"
     echo $"ifup-ppp for ${DEVNAME} exiting"
     /usr/bin/logger -p daemon.info -t ifup-ppp \
       $"/etc/sysconfig/network-scripts/chat-${DEVNAME} does not exist for ${DEVICE}"
     exit 1
    }
  fi
  /usr/bin/logger -s -p daemon.notice -t ifup-ppp \
    $"Setting up a new ${PEERCONF} config file"
  if [ -f /etc/ppp/peers/${DEVICE} ]; then
    cp -f /etc/ppp/peers/${DEVICE} ${PEERCONF}
  else
    touch ${PEERCONF}
  fi
  if [ "${WVDIALSECT}" ]; then
    echo "connect \"/usr/bin/wvdial --remotename ${DEVNAME} --chat '${WVDIALSECT}'\"" >> ${PEERCONF}
  else
    echo "connect \"/usr/sbin/chat ${CHATDBG} -f ${CHATSCRIPT}\"" >> ${PEERCONF}
  fi
fi
    
opts="lock"
if [ "${HARDFLOWCTL}" != no ] ; then
  opts="$opts modem crtscts"
fi
if [ "${ESCAPECHARS}" != yes ] ; then
  opts="$opts asyncmap 00000000"
fi
if [ "${DEFROUTE}" != no ] ; then
  # pppd will no longer delete an existing default route
  # so we have to help it out a little here.
  DEFRT=$(ip route list match 0.0.0.0/0)
  [ -n "${DEFRT}" ] && echo "$DEFRT" > /etc/default-routes
  echo "$DEFRT" | while read spec; do
      ip route del $spec;
  done
  opts="$opts defaultroute"
fi
if [ "${PEERDNS}" != no ] ; then
  cp -f /etc/resolv.conf /etc/resolv.conf.save
  opts="$opts usepeerdns"
fi
if [ -n "${MRU}" ] ; then
  opts="$opts mru ${MRU}"
fi
if [ -n "${MTU}" ] ; then
  opts="$opts mtu ${MTU}"
fi
if [ -n "${IPADDR}${REMIP}" ] ; then
  # if either IP address is set, the following will work.
  opts="$opts ${IPADDR}:${REMIP}"
fi
if [ -n "${PAPNAME}" ] ; then
  opts="$opts user ${PAPNAME} remotename ${DEVNAME}"
fi
if [ "${DEBUG}" = yes ] ; then
  opts="$opts debug"
fi

if [ ${DEMAND} = yes ] ; then
  opts="$opts demand ktune idle ${IDLETIMEOUT} holdoff ${RETRYTIMEOUT}"
  exec=
else
  opts="$opts nodetach"
  exec=exec
fi

/usr/bin/logger -p daemon.info -t ifup-ppp \
  $"pppd started for ${DEVNAME} on ${MODEMPORT} at ${LINESPEED}"

$exec pppd $opts ${MODEMPORT} ${LINESPEED} \
    ipparam ${DEVNAME} linkname ${DEVNAME} call ${DEVNAME}\
    noauth \
    ${PPPOPTIONS} || exit

if [ "${DEMAND}" = "yes" ] ; then
  # pppd is a tad slow to write the pid-file.
  sleep 2
  if [ -f /var/run/ppp-${DEVNAME}.pid ] ; then
    REALDEVICE=$(tail -1 /var/run/ppp-${DEVNAME}.pid)
    /etc/sysconfig/network-scripts/ifup-routes ${REALDEVICE} ${DEVNAME}
  fi
fi