osmocore: Add function osmo_macaddr_parse() to parse ETH MAC address

1 files changed, 25 insertions, 0 deletions

diff --git a/src/macaddr.c b/src/macaddr.c
new file mode 100644
index 00000000..1181dfe5
--- /dev/null
+++ b/src/macaddr.c
@@ -0,0 +1,25 @@
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+
+
+int osmo_macaddr_parse(uint8_t *out, const char *in)
+{
+	/* 00:00:00:00:00:00 */
+	char tmp[18];
+	char *tok;
+	unsigned int i = 0;
+
+	if (strlen(in) < 17)
+		return -1;
+
+	strncpy(tmp, in, sizeof(tmp)-1);
+	tmp[sizeof(tmp)-1] = '\0';
+
+	for (tok = strtok(tmp, ":"); tok && (i < 6); tok = strtok(NULL, ":")) {
+		unsigned long ul = strtoul(tok, NULL, 16);
+		out[i++] = ul & 0xff;
+	}
+
+	return 0;
+}