util: never use ether_ntoa(), since it formats with %x, not %02x, which makes etherne...

[elogind.git] / src / shared / socket-util.c

diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index 38729a25b80279d4b7fabdba9b84f52c49c64350..e3e54e8e089aeeec135b65e0754b8cf2cf1dec81 100644 (file)
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -727,3 +727,22 @@ bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b
 
         return false;
 }
+
+char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]) {
+        assert(addr);
+        assert(buffer);
+
+        /* Like ether_ntoa() but uses %02x instead of %x to print
+         * ethernet addresses, which makes them look less funny. Also,
+         * doesn't use a static buffer. */
+
+        sprintf(buffer, "%02x:%02x:%02x:%02x:%02x:%02x",
+                addr->ether_addr_octet[0],
+                addr->ether_addr_octet[1],
+                addr->ether_addr_octet[2],
+                addr->ether_addr_octet[3],
+                addr->ether_addr_octet[4],
+                addr->ether_addr_octet[5]);
+
+        return buffer;
+}