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84 lines
2.4 KiB
Objective-C
84 lines
2.4 KiB
Objective-C
//
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// WakeOnLanManager.m
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// Moonlight
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//
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// Created by Diego Waxemberg on 1/2/15.
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// Copyright (c) 2015 Moonlight Stream. All rights reserved.
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//
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#import "WakeOnLanManager.h"
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#import "Utils.h"
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#import <CoreFoundation/CoreFoundation.h>
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#import <sys/socket.h>
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#import <netinet/in.h>
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#import <arpa/inet.h>
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@implementation WakeOnLanManager
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static const int numPorts = 5;
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static const int ports[numPorts] = {7, 9, 47998, 47999, 48000};
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+ (void) wakeHost:(TemporaryHost*)host {
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NSData* wolPayload = [WakeOnLanManager createPayload:host];
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CFDataRef dataPayload = CFDataCreate(kCFAllocatorDefault, [wolPayload bytes], [wolPayload length]);
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CFSocketRef wolSocket = CFSocketCreate(kCFAllocatorDefault, PF_INET, SOCK_DGRAM, IPPROTO_UDP, 0, NULL, NULL);
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if (!wolSocket) {
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CFRelease(dataPayload);
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Log(LOG_E, @"Failed to create WOL socket");
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return;
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}
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Log(LOG_I, @"WOL socket created");
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struct sockaddr_in addr;
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_len = sizeof(addr);
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for (int i = 0; i < 2; i++) {
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// try all ip addresses
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if (i == 0) {
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inet_aton([host.localAddress UTF8String], &addr.sin_addr);
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} else {
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inet_aton([host.externalAddress UTF8String], &addr.sin_addr);
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}
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CFDataRef dataAddress = CFDataCreate(kCFAllocatorDefault, (unsigned char*)&addr, sizeof(addr));
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// try all ports
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for (int j = 0; j < numPorts; j++) {
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addr.sin_port = htons(ports[j]);
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Log(LOG_I, @"Sending WOL packet");
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CFSocketSendData(wolSocket, dataAddress, dataPayload, 0);
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}
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CFRelease(dataAddress);
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}
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CFRelease(dataPayload);
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}
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+ (NSData*) createPayload:(TemporaryHost*)host {
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NSMutableData* payload = [[NSMutableData alloc] initWithCapacity:102];
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// 6 bytes of FF
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UInt8 header = 0xFF;
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for (int i = 0; i < 6; i++) {
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[payload appendBytes:&header length:1];
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}
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// 16 repitiions of MAC address
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NSData* macAddress = [self macStringToBytes:host.mac];
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for (int j = 0; j < 16; j++) {
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[payload appendData:macAddress];
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}
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return payload;
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}
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+ (NSData*) macStringToBytes:(NSString*)mac {
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NSString* macString = [mac stringByReplacingOccurrencesOfString:@":" withString:@""];
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Log(LOG_D, @"MAC: %@", macString);
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return [Utils hexToBytes:macString];
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}
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@end
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