synce-serial 0.11-5.3 / usr / sbin / synce-serial-start

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/usr/sbin/synce-serial-start is in synce-serial 0.11-5.3.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below. 

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#!/bin/sh -e
#
# $Id: synce-serial-start.in 3078 2007-12-12 07:50:04Z mark_ellis $
#
# Script for starting a PPP connection for SynCE
#

THIS=`basename $0`

# include common stuff
. /usr/share/synce/synce-serial-common

exit_if_not_root

get_pid

if [ "${PID}" ]; then
	echo "
${THIS} detected that a SynCE serial connection was already 
started with PID ${PID}.

To be able to start a new connection, you may use synce-serial-abort to
force the already active connection to close.
" >&2
	exit 1
fi


#
# Prevent some support requests by asking the user to remove the usepeerdns
# option from the /etc/ppp/options file.
#

if cat ${PPP_OPTIONS} | grep -v '^[ 	]*#' | grep -q usepeerdns; then
	echo "
${THIS} encountered a problem with your ${PPP_OPTIONS} file:

The 'usepeerdns' option is not compatible with SynCE.  Please edit
${PPP_OPTIONS} and remove this option before running this script again.
" >&2

	exit 1
fi

if [ $# -gt 0 ]; then
  synce_cmdline_setup "$@"  
elif [ -e ${CONFIG_FILE} ]; then
  . $CONFIG_FILE
else
  echo "
${THIS} was unable to find the file ${CONFIG_FILE}:

Please run the synce-serial-config tool to create this file before running this
script again.
" >&2
  exit 1
fi

#
# Check for ppp_async kernel module
#

if [ "`uname -s`" = "Linux" ]; then
  export PATH=/sbin:/usr/sbin:$PATH
  if ! grep -q ppp /proc/devices; then
    if ! modprobe ppp_async; then
    echo "
${THIS} was unable to load the ppp_async kernel module:

Please add this module to your Linux kernel before running this script again.
" >&2
    exit 1
    fi
  fi
fi

#
# Check for file in /dev
# 
if [ !  -c "$SYNCE_DEV" ]; then
  echo "
Error!

${THIS} could not find the serial port $SYNCE_DEV.
Is your Windows CE device really connected?
" >&2
    exit 1
fi


#
# Check for suspected firewall
#

MD5=/usr/bin/md5sum
IPTABLES=/sbin/iptables
EMPTY_IPTABLES_MD5SUM="f2384cfbed4d4fb64061368c4128d7ea"

# Do we have md5 or md5sum?

if [ -x $MD5 ]; then

	# Do we have iptables?
	if [ -x $IPTABLES ]; then
		# Is iptables working?
		if $IPTABLES -L > /dev/null; then
			IPTABLES_MD5SUM=`$IPTABLES -L -n | $MD5 | sed 's/[ 	].*//'`
			if [ "$EMPTY_IPTABLES_MD5SUM" != "$IPTABLES_MD5SUM" ]; then
				echo "
Warning!

You have firewall rules that may prevent SynCE from working properly!
" >&2
			fi
		fi		
	fi

fi

#
# See if dccm is running
#

PGREP=`which pgrep`
if [ "$PGREP" ]; then
  $PGREP dccm >/dev/null || echo "
Warning!

${THIS} cannot find the dccm process.
Without dccm your PPP connection will soon terminate!
" >&2
fi

#
# Finally start pppd
#

if $BINDIR/synce-serial-start-device; then
	echo "
${THIS} is now waiting for your device to connect
"
	exit 0
else
	echo "
${THIS} was unable to start the PPP daemon!
" >&2
	# return the error code we got from pppd
	exit
fi

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