base-files: mtd_get_mac_ascii bugfix

The mtd_get_mac_ascii utility function was broken. This fixes it.

  - Remove the superfluous include of /lib/functions.sh. The
    function is already in that file so it is pointless,
  - only use a variable if the whole key word matches,
  - don't try to process the MAC address if it is empty,
  - use 'tr' to canonicalize the MAC address,

Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
[juhosg: add more fixes, update commit message]
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 38690

package/base-files/Makefile

@@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
 include $(INCLUDE_DIR)/version.mk
 
 PKG_NAME:=base-files
-PKG_RELEASE:=146
+PKG_RELEASE:=147
 
 PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/
 PKG_BUILD_DEPENDS:=opkg/host

package/base-files/files/lib/functions.sh

@@ -248,17 +248,16 @@ mtd_get_mac_ascii()
 	local part
 	local mac_dirty
 
-	. /lib/functions.sh
-
 	part=$(find_mtd_part "$mtdname")
 	if [ -z "$part" ]; then
 		echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
 		return
 	fi
 
-	mac_dirty=$(strings "$part" | sed -n 's/'"$key"'=//p')
+	mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
+
 	# "canonicalize" mac
-	printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${mac_dirty//:/ 0x}
+	[ -n "$mac_dirty" ] && echo ${mac_dirty} | tr [A-F] [a-f]
 }
 
 mtd_get_mac_binary() {