From 2e7672a2a05538d1538d8a7f4a3cc37195437662 Mon Sep 17 00:00:00 2001
From: Michael Lotz <mmlr@mlotz.ch>
Date: Fri, 21 Aug 2009 05:52:36 +0000
Subject: [PATCH] Adding a simple wake on LAN command line utility. It will
 broadcast a magic packet that targets the MAC address supplied by argument.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32555 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/bin/network/Jamfile       |  4 +++
 src/bin/network/wakeonlan.cpp | 60 +++++++++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 src/bin/network/wakeonlan.cpp

diff --git a/src/bin/network/Jamfile b/src/bin/network/Jamfile
index a831062c66..ddd65a3abd 100644
--- a/src/bin/network/Jamfile
+++ b/src/bin/network/Jamfile
@@ -1,5 +1,9 @@
 SubDir HAIKU_TOP src bin network ;
 
+StdBinCommands
+	wakeonlan.cpp
+	: network : $(haiku-utils_rsrc) ;
+
 SubInclude HAIKU_TOP src bin network arp ;
 SubInclude HAIKU_TOP src bin network atftpd ;
 SubInclude HAIKU_TOP src bin network ftp ;
diff --git a/src/bin/network/wakeonlan.cpp b/src/bin/network/wakeonlan.cpp
new file mode 100644
index 0000000000..9799c4950e
--- /dev/null
+++ b/src/bin/network/wakeonlan.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2009, Michael Lotz, mmlr@mlotz.ch.
+ * Distributed under the terms of the MIT License.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+int
+main(int argc, char *argv[])
+{
+	if (argc < 2) {
+		printf("usage: %s <MAC address>\n", argv[0]);
+		return 1;
+	}
+
+	unsigned char mac[6];
+	if (sscanf(argv[1], "%2x%*c%2x%*c%2x%*c%2x%*c%2x%*c%2x", &mac[0], &mac[1],
+		&mac[2], &mac[3], &mac[4], &mac[5]) != 6) {
+		printf("unrecognized MAC format\n");
+		return 2;
+	}
+
+	char buffer[102];
+	memset(buffer, 0xff, 6);
+	for (int i = 1; i <= 16; i++)
+		memcpy(buffer + i * 6, mac, sizeof(mac));
+
+	int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if (sock < 0) {
+		printf("failed to create socket: %s\n", strerror(sock));
+		return 3;
+	}
+
+	int value = 1;
+	int result = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &value,
+		sizeof(value));
+	if (result < 0) {
+		printf("failed to set broadcast socket option: %s\n", strerror(result));
+		return 4;
+	}
+
+	sockaddr_in address;
+	address.sin_family = AF_INET;
+	address.sin_addr.s_addr = 0xffffffff;
+	address.sin_port = 0;
+
+	result = sendto(sock, buffer, sizeof(buffer), 0,
+		(struct sockaddr *)&address, sizeof(address));
+	if (result < 0) {
+		printf("failed to send magic packet: %s\n", strerror(result));
+		return 5;
+	}
+
+	printf("magic packet sent to %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0],
+		mac[1], mac[2], mac[3], mac[4], mac[5]);
+	return 0;
+}