From cb6fe86292fd85a67dfd930cdc351fec0ddf96bc Mon Sep 17 00:00:00 2001
From: Håkon Nessjøen <haakon.nessjoen@gmail.com>
Date: Thu, 24 Feb 2011 16:46:30 +0100
Subject: Code cleanup

---
 macping.c   | 10 +++++++---
 mactelnet.c | 48 ++++--------------------------------------------
 protocol.c  | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 protocol.h  |  1 +
 4 files changed, 65 insertions(+), 47 deletions(-)

diff --git a/macping.c b/macping.c
index 1f23e04..7731176 100644
--- a/macping.c
+++ b/macping.c
@@ -89,7 +89,7 @@ static void setup_devices() {
 	}
 }
 
-long long int toddiff(struct timeval *tod1, struct timeval *tod2)
+static long long int toddiff(struct timeval *tod1, struct timeval *tod2)
 {
     long long t1, t2;
     t1 = tod1->tv_sec * 1000000 + tod1->tv_usec;
@@ -97,7 +97,7 @@ long long int toddiff(struct timeval *tod1, struct timeval *tod2)
     return t1 - t2;
 }
 
-void display_results() {
+static void display_results() {
 	int percent = (int)((100.f/ping_sent) * pong_received);
 	if (percent > 100)
 		percent = 0;
@@ -194,7 +194,11 @@ int main(int argc, char **argv)  {
 		return 1;
 	}
 
-	ether_aton_r(argv[optind], (struct ether_addr *)dstmac);
+	/* Get mac-address from string, or check for hostname via mndp */
+	if (!query_mndp_verbose(argv[optind], dstmac)) {
+		/* No valid mac address found, abort */
+		return 1;
+	}
 
 	/* Open a UDP socket handle */
 	sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
diff --git a/mactelnet.c b/mactelnet.c
index e69c88f..2b2f74a 100644
--- a/mactelnet.c
+++ b/mactelnet.c
@@ -461,50 +461,10 @@ int main (int argc, char **argv) {
 	/* Need to use, to be able to autodetect which interface to use */
 	setsockopt(insockfd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (optval));
 
-	/* Check for identity name or mac address */
-	{
-		char *p = argv[optind];
-		int colons = 0;
-		int dashs = 0;
-		while (*p++) {
-			if (*p == ':') {
-				colons++;
-			}
-			else if (*p == '-') {
-				dashs++;
-			}
-		}
-
-		/* 
-		 * Windows users often enter macs with dash instead
-		 * of colon.
-		 */
-		if (colons == 0 && dashs == 5) {
-			p = argv[optind];
-			while (*p++) {
-				if (*p == '-') {
-					*p = ':';
-				}
-			}
-			colons = dashs;
-		}
-
-		if (colons != 5) {
-			fprintf(stderr, "Searching for '%s'...", argv[optind]);
-
-			/* Search for Router by identity name, using MNDP */
-			if (!query_mndp(argv[optind], dstmac)) {
-				fprintf(stderr, "not found\n");
-				return 1;
-			}
-
-			/* Router found, display mac and continue */
-			fprintf(stderr, "found\n");
-
-		} else {
-			/* Convert mac address string to ether_addr struct */
-			ether_aton_r(argv[optind], (struct ether_addr *)dstmac);
-		}
+	/* Get mac-address from string, or check for hostname via mndp */
+	if (!query_mndp_verbose(argv[optind], dstmac)) {
+		/* No valid mac address found, abort */
+		return 1;
 	}
 
 	if (!have_username) {
diff --git a/protocol.c b/protocol.c
index a207494..2de5833 100644
--- a/protocol.c
+++ b/protocol.c
@@ -472,3 +472,56 @@ done:
 	close(sock);
 	return 0;
 }
+
+/*
+ * This function accepts either a full MAC address using : or - as seperators.
+ * Or a router hostname. The hostname will be searched for via MNDP broadcast packets.
+ */
+int query_mndp_verbose(char *address, unsigned char *dstmac) {
+	char *p = address;
+	int colons = 0;
+	int dashs = 0;
+
+	while (*p++) {
+		if (*p == ':') {
+			colons++;
+		}
+		else if (*p == '-') {
+			dashs++;
+		}
+	}
+
+	/* 
+	* Windows users often enter macs with dash instead
+	* of colon.
+	*/
+	if (colons == 0 && dashs == 5) {
+		p = address;
+		while (*p++) {
+			if (*p == '-') {
+				*p = ':';
+			}
+		}
+		colons = dashs;
+	}
+
+	if (colons != 5) {
+		/* 
+		 * Not a valid mac-address.
+		 * Search for Router by identity name, using MNDP
+		 */
+		fprintf(stderr, "Searching for '%s'...", address);
+		if (!query_mndp(address, dstmac)) {
+			fprintf(stderr, "not found\n");
+			return 0;
+		}
+
+		/* Router found, display mac and continue */
+		fprintf(stderr, "found\n");
+	} else {
+		/* Convert mac address string to ether_addr struct */
+		ether_aton_r(address, (struct ether_addr *)dstmac);
+	}
+
+	return 1;
+}
diff --git a/protocol.h b/protocol.h
index c1cca1f..a2c5d8b 100644
--- a/protocol.h
+++ b/protocol.h
@@ -127,6 +127,7 @@ extern int mndp_add_attribute(struct mt_packet *packet, enum mt_mndp_attrtype at
 
 extern struct mt_mndp_info *parse_mndp(const unsigned char *data, const int packet_len);
 int query_mndp(const char *identity, unsigned char *mac);
+int query_mndp_verbose(char *address, unsigned char *dstmac);
 
 /* Number of milliseconds between each retransmission */
 #define MAX_RETRANSMIT_INTERVALS 9
-- 
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