X-Git-Url: https://git.archive.openwrt.org/?p=openwrt.git;a=blobdiff_plain;f=package%2Fbase-files%2Ffiles%2Flib%2Ffunctions.sh;h=6f23e0b8b2ea57fedc0cf3ae8d1f300e843a1516;hp=19cfbae172a00730db80383386399f9eca1afe80;hb=1cd654611f450bd2ce579590a9118e7c84712587;hpb=7eb5ccb9768ca1357d7592505894f2545f615e66

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index 19cfbae172..6f23e0b8b2 100755
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -248,17 +248,36 @@ 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" ] && macaddr_canonicalize "$mac_dirty"
+}
+
+mtd_get_blob()
+{
+	local mtdname="$1"
+	local offset="$2"
+	local count="$3"
+	local firmware="$4"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_blob: partition $mtdname not found!" >&2
+		return 1
+	fi
+
+	dd if=$part of=$firmware bs=1 skip=$offset count=$count 2>/dev/null || {
+		echo "mtd_get_blob: failed to extract $firmware from $part" >&2
+		return 1
+	}
 }
 
 mtd_get_mac_binary() {
@@ -311,6 +330,39 @@ macaddr_2bin()
 	echo -ne \\x${mac//:/\\x}
 }
 
+macaddr_canonicalize()
+{
+	local mac="$1"
+	local canon=""
+
+	[ ${#mac} -gt 17 ] && return
+	[ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
+
+	for octet in ${mac//[\.:-]/ }; do
+		case "${#octet}" in
+		1)
+			octet="0${octet}"
+			;;
+		2)
+			;;
+		4)
+			octet="${octet:0:2} ${octet:2:2}"
+			;;
+		12)
+			octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
+			;;
+		*)
+			return
+			;;
+		esac
+		canon=${canon}${canon:+ }${octet}
+	done
+
+	[ ${#canon} -ne 17 ] && return
+
+	printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
+}
+
 strtok() { # <string> { <variable> [<separator>] ... }
 	local tmp
 	local val="$1"