#!/bin/sh
#
# For use with bluespam-1.2
# simon@v2.nl (c)2005 V2_lab
#

#general defines
HCICONF_FILE=hcid.conf
BTCONF_DIR=/etc/bluetooth
PENDING_DIR=/mnt/mmc/pending
CONTENT_DIR=/mnt/mmc/content
DB_DIR=/mnt/mmc/db
DB_FILE=${DB_DIR}/btaddr.db
HCICONFIG=/usr/sbin/hciconfig
BLUESPAM=/usr/bin/bluespam
OPD=/usr/sbin/opd
OPD_CHANNEL=10

#lock files
OPD_LOCK=/tmp/opd.lock
SPAM_LOCK=/tmp/spam.lock

SPAM_STATE=1

execute() {
    echo "executing $1"
    action=${1%.cmd}
    case $action in
	remove)
	    echo "remove `cat $PENDING_DIR/$1`"
	    dev=`cat $PENDING_DIR/$1`
	    $BLUESPAM $dev
	    ;;
	name)
	    echo "changing device name to `cat $PENDING_DIR/$1`"
	    name=`cat $PENDING_DIR/$1`
	    if [ -n $name ] 
	    then
		cat $BTCONF_DIR/$HCICONF_FILE | sed -e "s/[ \t]*name[ \t]*.*/name \"$name\"/g" > /tmp/$HCICONF_FILE
		mv /tmp/$HCICONF_FILE $BTCONF_DIR
		$HCICONFIG hci0 name "$name"
		$HCICONFIG hci0 name
	    fi
	    ;;
	stop)
	    echo "stop spamming"
	    SPAM_STATE=0
	    ;;
	start)
	    echo "start spamming"
	    SPAM_STATE=1
	    ;;
	*)
	    echo "unkown command"
    esac
}

acquire_lock() {
    #cannot scan wile opd holds lock
    count=0
    echo "is lock there"
    while [ -e $OPD_LOCK ] 
    do
	echo "locks there"
	if [ $count -eq 10 ]
	then
	    return 1
	fi
	count=$((count+1))
	sleep 1
    done
    
    echo "no, creating spam lock"
    touch $SPAM_LOCK
    return 0
}

release_lock() {
    echo "removing spam lock"
    rm $SPAM_LOCK
}

sig_handle() {
    release_lock
    exit 0
}

trap sig_handle INT QUIT TSTP

while true
do 
    #check for opd 
    if ! ps ax | grep -q [o]pd
    then
	$OPD --sdp --channel $OPD_CHANNEL --path $PENDING_DIR --daemonize 
    fi
    
    for cmd in `ls $PENDING_DIR`
    do
	type=`echo $cmd | sed -e 's/^.*\.//'`
	case $type in
	    cmd) 
		execute $cmd
		rm $PENDING_DIR/$cmd
		;;
	    *)
		echo "it's content: $cmd"
		rm $CONTENT_DIR/*
		mv $PENDING_DIR/$cmd $CONTENT_DIR
		rm $DB_FILE
	esac
    done

    if  [ $SPAM_STATE -eq 1 ]
    then
	acquire_lock
	$BLUESPAM
	release_lock
	sleep 5
    else 
	sleep 1
    fi
done