OpenWrt external storage package linker

opkg-link.sh

#!/bin/sh
# modified by ddxx0n

COMMAND=$1
PACKAGE=$2

setdest () {
	for i in `grep dest /etc/opkg.conf | cut -d ' ' -f 3`; do
		if [ -f $i/usr/lib/opkg/info/$PACKAGE.list ]; then
			DEST=$i
		fi
	done
	if [ "x$DEST" = "x" ]; then
		echo "Can not locate $PACKAGE."
		echo "Check /etc/opkg.conf for correct dest listings";
		echo "Check name of requested package: $PACKAGE"
		exit 1
	fi
}

addlinks () {
	setdest;
	cat $DEST/usr/lib/opkg/info/$PACKAGE.list | while read LINE; do
		SRC=$LINE
		DST=`echo $SRC | sed "s|$DEST||"`
		DSTNAME=`basename $DST`
		DSTDIR=`echo $DST | sed "s|$DSTNAME\$||"`
		if [ -f "$SRC" ]; then
			echo -n "Linking $DST ... "
			if [ ! -e "$DST" ]; then
				if [ ! -d "$DSTDIR" ]; then
					mkdir -p "$DSTDIR"
				fi
				# if [ `echo $SRC | grep bin/` ] ||
				if [ `echo $SRC | grep /lib/python` ] || [ `echo $SRC | grep /lib/perl` ] || [ `echo $SRC | grep /lib/php/PEAR` ]; then
  					echo "skipped"
				else
					echo "ok"
					ln -sf "$SRC" "$DST"
				fi
			else
				echo "warning: already exists"
			fi
		else
			if [ ! -d "$SRC" ]; then
				echo -n "Creating $DST ... "
				if [ ! -e $DST ]; then
					echo "ok"
					mkdir -p $DST
				else
					echo "warning: already exists"
				fi
			else
				echo "error: source $SRC does not exist"
			fi
		fi
	done
}

removelinks () {
	setdest;
	cat $DEST/usr/lib/opkg/info/$PACKAGE.list | while read LINE; do
		SRC=$LINE
		DST=`echo $LINE | sed "s|$DEST||"`
		DSTNAME=`basename $DST`
		DSTDIR=`echo $DST | sed "s|$DSTNAME\$||"`
		if [ -f $DST ]; then
			echo -n "Unlinking $DST ... "
			if [ -h $DST ]; then
				echo "ok"
				rm -f $DST
			else
				echo "warning: regular file"
			fi
			test -d $DSTDIR && rmdir $DSTDIR 2>/dev/null
		else
			echo -n "Removing $DST ... "
			if [ -d $DST ]; then
				rmdir $DST
				if [ $? = 0 ]; then
					echo "ok"
				else
					echo "warning: not empty"
				fi
			else
				echo "error: does not exist"
			fi
		fi
	done
}

mountdest () {
	if [ ! -d $PACKAGE ]; then
		echo "Mount point does not exist"
		exit 1
	fi
	for i in $PACKAGE/usr/lib/opkg/info/*.list; do
		$0 add `basename $i .list`
	done

	touch /etc/flags/usb_mounted
}

umountdest () {
	if [ ! -d $PACKAGE ]; then
		echo "Mount point does not exist"
		exit 1
	fi
	for i in $PACKAGE/usr/lib/opkg/info/*.list; do
		$0 remove `basename $i .list`
	done
	
	rm -f /etc/flags/usb_mounted
}

case "$COMMAND" in
  add)
	addlinks
  ;;
  remove)
	removelinks
  ;;
  mount)
	mountdest
  ;;
  umount)
	umountdest
  ;;
   *)
	echo "Usage: $0  "
	echo "       Commands: add, remove, mount, umount"
	echo "       Targets: , "
	echo "Example:  $0 add linux-kernel"
	echo "Example:  $0 remove linux-kernel"
	echo "Example:  $0 mount /usr/local/openwrt"
	echo "Example:  $0 umount /usr/local/openwrt"
	exit 1
	;;
esac
exit 0