#!/bin/sh

SMB_CONF=/etc/samba/smb.conf
TMP_SAMBA_WLIST=/tmp/tmp_samba_wlist
TMP_SAMBA_CHECK=/tmp/tmp_samba_check
TMP_SAMBA_LOCK=/tmp/tmp_samba_lock

add_smb_global()
{
	echo "[global]" > $SMB_CONF
	echo -n " interfaces = br0 "  >> $SMB_CONF
	br0ip=`config get lan_ipaddr`
	echo $br0ip >>  $SMB_CONF	
	cat /usr/config/smb.conf  >> $SMB_CONF
}

process_group()
{	
	echo -n "  valid users=" >> $SMB_CONF
	echo -n "  write list=" > $TMP_SAMBA_WLIST

	i=1
	wc=1
	while [ 1 ];do
		grp=`echo $1 | awk -v cc=$i -F, {'print $ cc'}`
		if [ -z $grp ]; then
			break;
		fi
		if [ $i -ge 2 ]; then
			echo -n "," >> $SMB_CONF
		fi
		echo -n "@$grp" >> $SMB_CONF

		let i=$i+1

		if [ $grp = "admin" ]; then
			if [ $wc -ge 2 ]; then
				echo -n "," >> $TMP_SAMBA_WLIST
			fi
			echo -n "@admin" >> $TMP_SAMBA_WLIST
			let wc=$wc+1
		else
			access_mode=`config show |grep ^admin_group | sed 's/admin_group[0-9]*[=]/''/'|grep ^$grp | awk '{print$3}'`
			[ -z $access_mode ] && continue

			if  [ "$access_mode" = "R&W" ]; then
	                        if [ $wc -ge 2 ]; then
        	                        echo -n "," >> $TMP_SAMBA_WLIST
				fi
				echo -n "@$grp" >> $TMP_SAMBA_WLIST
				let wc=$wc+1			
			fi
		fi	

	done
	echo  >> $SMB_CONF
	echo >> $TMP_SAMBA_WLIST
	cat $TMP_SAMBA_WLIST >> $SMB_CONF
}

reload_samba()
{
	samba_pid=`pidof smbd`
	if [ -z "$samba_pid" ]; then 
		smbd -D $SMBD_OPTIONS &
	else
		killall -SIGHUP smbd
	fi
}

check_add_shares()
{ 
	while read abspath;
	do
		test -f $abspath/.wndr3700_disk_share_info || continue

		cat $abspath/.wndr3700_disk_share_info | sed 's/disk_sharefolder[0-9]*[=]/''/'| while read sharefolder;
		do
			echo $sharefolder>/tmp/testone
	        	display_name=`awk '{print$1}' /tmp/testone`
			Partition=`awk '{print$2}' /tmp/testone`
		        Location=`awk '{print$3}' /tmp/testone` 
			group=`awk '{print$4}' /tmp/testone`
			echo >> $SMB_CONF
			echo "[$display_name]">> $SMB_CONF
			echo "  path=$abspath$Location">> $SMB_CONF
			echo "  read only=yes" >> $SMB_CONF
			process_group $group
			echo "  browseable=yes">> $SMB_CONF
			echo "  public=no">> $SMB_CONF
			rm -f /tmp/testone
#	       	access_mode=`config show |grep ^admin_group | sed 's/admin_group[0-9]*[=]/''/'|grep ^$group | awk '{print$3}'`
 #     		[ "$access_mode" = "R&W" ] && echo "writable=yes">> $SMB_CONF
		done
	done < $TMP_SAMBA_CHECK
}

while [ 1 ];do
	test -f $TMP_SAMBA_LOCK && continue
	touch $TMP_SAMBA_LOCK
	break
done

# $1 = add/remove $2= DEVICENAME
echo > $TMP_SAMBA_CHECK

if [ $# -eq 0 ]; then
	add_smb_global
        df | grep ^/dev/sd | awk {' print$6 '} > $TMP_SAMBA_CHECK
	check_add_shares
elif [ $# -eq 2 ]; then
	no_global=`grep "\[global\]" $SMB_CONF`
	[ -z $no_global ] && add_smb_global
	case $1 in
	add)
	        echo "/tmp/mnt/$2" > $TMP_SAMBA_CHECK
		check_add_shares
		;;
	*)	
		echo "remove not supported yet."
		;;
	esac
else
	echo "wrong call."
	exit 1
fi

rm $TMP_SAMBA_CHECK -f
rm $TMP_SAMBA_WLIST -f

reload_samba

rm $TMP_SAMBA_LOCK -f