#!/bin/sh
TMP=/var/log/setup/tmp
if [ ! -d $TMP ]; then
	mkdir -p $TMP
fi

. /usr/lib/setup/INCISO

if [ -f $TMP/Punattended ]; then
	eval $(grep "^NFS_SERVER=" $TMP/Punattended)
	eval $(grep "^NFS_ROOT=" $TMP/Punattended)
fi

REMOTE_SERVER=$NFS_SERVER
REMOTE_PATH=$NFS_ROOT

while [ 0 ]; do
	rm -f $TMP/SeTDS $TMP/SeTmount $TMP/SeTsource

	umount -f /var/log/mount 2>/dev/null
	if [ -n "$(mount | grep /var/log/mount)" -o -d /var/log/mount/lost+found -o -d /var/log/mount/recycled -o -r /var/log/mount/io.sys ]; then
		cat <<- EOF > $TMP/tempmsg
		
		Setup failed to unmount a required directory:
		
		/var/log/mount
		
		Please reboot the machine an try again.
		
		EOF
		dialog \
		  --title "ERROR" \
		  --yes-label "REBOOT" \
		  --no-label "CANCEL" \
		  --yesno "$(cat $TMP/tempmsg)" \
		  11 70
		RET=$?
		rm -f $TMP/tempmsg
		if [ $RET -eq 0 ]; then
			reboot
		else
			exit 1
		fi
	fi

	cat <<- EOF > $TMP/tempmsg

	Please provide the IP address of an NFS server on your network
	containing the contents (or an ISO image) of a Salix installation
	disc.
	
	Example: 192.168.1.101
	 
	EOF
	dialog \
	  --title "NFS SERVER IP ADDRESS" \
	  --inputbox "$(cat $TMP/tempmsg)" \
	  14 70 \
	  $REMOTE_SERVER \
	  2> $TMP/remote
	RET=$?
	REMOTE_SERVER="$(cat $TMP/remote)"
	rm -f $TMP/tempmsg $TMP/remote
	if [ $RET -ne 0 ]; then
		exit 1
	fi

	while [ 0 ]; do
		cat <<- EOF > $TMP/tempmsg
		
		Now please provide the path of an exported directory containing
		the contents (or an ISO image) of a Salix installation disc.
		
		Example: /srv/salix-xfce/iso
		
		Note: Use the <Exports> button to request a list of exported
		directories from the server.
		 
		EOF
		dialog \
		  --title "SELECT SOURCE DIRECTORY" \
		  --help-button --help-label "Exports" \
		  --inputbox "$(cat $TMP/tempmsg)" \
		  16 70 \
		  $REMOTE_PATH \
		  2> $TMP/sourcedir
		RET=$?
		REMOTE_PATH="$(cat $TMP/sourcedir)"
		rm -f $TMP/sourcedir $TMP/tempmsg
		if [ $RET -eq 2 ]; then
			dialog \
			  --infobox "\nPlease wait...\n" \
			  5 18
			# this stops showmount hanging forever
			ping -c 1 -w 10 $REMOTE_SERVER 2>&1 >/dev/null
			if [ $? -ne 0 ]; then
				echo "Server unreachable." > $TMP/tempmsg
			else
				showmount -e $REMOTE_SERVER 2>&1 > $TMP/tempmsg
				if [ $? -ne 0 ]; then
					echo "Server unreachable." > $TMP/tempmsg
				fi
			fi
			dialog \
			  --title "EXPORT LIST" \
			  --textbox "$TMP/tempmsg" \
			  25 80
			rm -f $TMP/tempmsg
			continue
		fi
		break
	done

	if [ $RET -ne 0 ]; then
		continue
	fi

	if [ -x "$(type -path rpc.portmap)" -a -x "$(type -path rpc.statd)" ]; then
		for rpc in rpc.portmap rpc.statd ;do
			if [ -z "$(ps axc | grep -q $rpc)" ]; then
				$rpc
			fi
		done
	else
		cat <<- EOF > $TMP/tempmsg
		
		Setup failed to start the RPC portmapper service.

		Please check and try again.
		
		EOF
		dialog \
		  --title "SERVICE FAILURE" \
		  --exit-label "OK" \
		  --textbox "$TMP/tempmsg" \
		  9 70
		rm -f $TMP/tempmsg
		exit 1
	fi

	mkdir -p /var/log/mount 2>/dev/null
	mount -r -t nfs -o vers=3 $REMOTE_SERVER:$REMOTE_PATH /var/log/mount 2>/dev/null
	if [ $? -ne 0 ]; then
		cat <<- EOF > $TMP/tempmsg
		
		Failed to mount NFS filesystem:
		
		$REMOTE_SERVER:$REMOTE_PATH
		
		Please check and try again.
		
		EOF
		dialog \
		  --title "MOUNT FAILURE" \
		  --exit-label "OK" \
		  --textbox "$TMP/tempmsg" \
		  11 70
		rm -f $TMP/tempmsg
		continue
	else
		cat <<- EOF > $TMP/tempmsg
		
		Successfully mounted NFS filesystem:
		
		$(mount | grep $REMOTE_SERVER:$REMOTE_PATH)
		 
		EOF
		dialog \
		  --title "MOUNT SUCCESS" \
		  --exit-label "OK" \
		  --textbox "$TMP/tempmsg" \
		 9 70
		rm -f $TMP/tempmsg
	fi

	check_iso_image /var/log/mount /var/log/mntiso
	if [ $? -eq 0 ]; then
		if [ -d /var/log/mntiso/salix ]; then
			echo "/var/log/mntiso/salix" > $TMP/SeTDS
		else
			cat <<- EOF > $TMP/tempmsg
			
			The ISO image you specified is not valid:
			
			$(basename $SOURCEISO)
				
			Please check and try again.
			 
			EOF
			dialog \
			  --title "INVALID ISO IMAGE" \
			  --exit-label "OK" \
			  --textbox "$TMP/tempmsg" \
			  11 70
			rm -f $TMP/tempmsg
			umount -f /var/log/mntiso 2>/dev/null
			continue
		fi
	elif [ -d /var/log/mount/salix -a -f /var/log/mount/PACKAGES.TXT.gz ]; then
		echo "/var/log/mount/salix" > $TMP/SeTDS
	elif [ -d /var/log/mount/core -a -d /var/log/mount/basic -a -d /var/log/mount/full ]; then
		echo "/var/log/mount/" > $TMP/SeTDS
	else
		cat <<- EOF > $TMP/tempmsg
		
		The directory you specified is not valid:
		
		$REMOTE_PATH
		
		Please check and try again.
		 
		EOF
		dialog \
		  --title "INVALID SOURCE DIRECTORY" \
		  --exit-label "OK" \
		  --textbox "$TMP/tempmsg" \
		  11 70
		rm -f $TMP/tempmsg
		continue
	fi
	echo "-source_mounted" > $TMP/SeTmount
	echo "/dev/null" > $TMP/SeTsource
	break
done