bluez-libs patch to include bachk() function

diff -u -r1.27 bluetooth.h
@@ -125,6 +125,7 @@
 int ba2str(const bdaddr_t *ba, char *str);
 int str2ba(const char *str, bdaddr_t *ba);
 int ba2oui(const bdaddr_t *ba, char *oui);
+int bachk(const char *str);
 
 int baprintf(const char *format, ...);
 int bafprintf(FILE *stream, const char *format, ...);

diff -u -r1.41 bluetooth.c
@@ -33,6 +33,7 @@
 #include <stdlib.h>
 #include <malloc.h>
 #include <string.h>
+#include <ctype.h>
 #include <sys/socket.h>
 
 #include <bluetooth/bluetooth.h>

@@ -110,6 +111,38 @@
 	return sprintf(str, "%2.2X-%2.2X-%2.2X", b[0], b[1], b[2]);
 }
 
+int bachk(const char *str)
+{
+	char tmp[18];
+	char *ptr = tmp;
+
+	if (!str)
+		return -1;
+	if (strlen(str) != 17)
+		return -1;
+
+	memcpy(tmp, str, 18);
+
+	while (*ptr) {
+		*ptr = toupper(*ptr);
+		if (*ptr < '0'|| (*ptr > '9' && *ptr < 'A') || *ptr > 'F')
+			return -1;
+		ptr++;
+		*ptr = toupper(*ptr);
+		if (*ptr < '0'|| (*ptr > '9' && *ptr < 'A') || *ptr > 'F')
+			return -1;
+		ptr++;
+		*ptr = toupper(*ptr);
+		if (*ptr == 0)
+			break;
+		if (*ptr != ':')
+			return -1;
+		ptr++;
+	}
+
+	return 0;
+}
+
 int baprintf(const char *format, ...)
 {
 	va_list ap;