basics

src/Program.cpp

+/*
+ * Program.cpp
+ *
+ *  Created on: 04.09.2015
+ *      Author: jdi
+ */
+#include <stdio.h>
+
+#include "Program.h"
+#include "Device.h"
+#include "Host.h"
+#include "Socket.h"
+#include "Packet.h"
+
+Program::Program() {
+	// TODO Auto-generated constructor stub
+}
+
+Program::~Program() {
+	// TODO Auto-generated destructor stub
+}
+
+int Program::run() {
+	Device d = Device();
+	printf(" %d", d.getName());
+
+	bytes b = { 255, 255, 0, 0};
+
+	Host h = Host();
+	Packet p = Packet(Packet::DISCOVERY);
+	p.setBody(b);
+	p.setHostMac(h.getMac());
+	bytes a = p.getBytes();
+	printf("\na =");
+	for (unsigned i = 0; i < sizeof(a); i++)
+		printf(" %d", a[i]);
+	p.encode(a);
+	printf("\nb =");
+	for (unsigned i = 0; i < sizeof(a); i++)
+		printf(" %d", a[i]);
+	printf("\n");
+
+	try {
+		asio::io_service io_service;
+		Socket s(io_service, dst_port, src_port);
+		//s.listen();
+		s.send(a);
+		io_service.run();
+	} catch (std::exception& e) {
+		std::cerr << "Exception: " << e.what() << "\n";
+	}
+
+	return 1;
+}
+
+int Program::discover() {
+	return 0;
+}

src/Program.h

+/*
+ * Program.h
+ *
+ *  Created on: 04.09.2015
+ *      Author: jdi
+ */
+
+#ifndef PROGRAM_H_
+#define PROGRAM_H_
+
+class Program {
+public:
+	Program();
+	virtual ~Program();
+	int run();
+	void setPort(int);
+	void setPort();
+	int src_port = 29809;
+	int dst_port = 29808;
+private:
+	int discover();
+};
+
+#endif /* PROGRAM_H_ */

src/Types.h

+/*
+ * Types.h
+ *
+ *  Created on: 11.09.2015
+ *      Author: jdi
+ */
+
+#ifndef TYPES_H_
+#define TYPES_H_
+
+#include <vector>
+
+template <typename T>
+std::vector<T> operator+(const std::vector<T> &A, const std::vector<T> &B)
+{
+    std::vector<T> AB;
+    AB.reserve( A.size() + B.size() );                // preallocate memory
+    AB.insert( AB.end(), A.begin(), A.end() );        // add A;
+    AB.insert( AB.end(), B.begin(), B.end() );        // add B;
+    return AB;
+}
+
+template <typename T>
+std::vector<T> &operator+=(std::vector<T> &A, const std::vector<T> &B)
+{
+    A.reserve( A.size() + B.size() );                // preallocate memory without erase original data
+    A.insert( A.end(), B.begin(), B.end() );         // add B;
+    return A;                                        // here A could be named AB
+}
+
+typedef std::vector<unsigned char> bytes;
+typedef unsigned char byte;
+
+struct dataset{
+ short type;
+ short len;
+ bytes value;
+};
+
+typedef std::vector<dataset> datasets;
+
+#endif /* TYPES_H_ */

src/device/Device.cpp

+/*
+ * Device.cpp
+ *
+ *  Created on: 01.09.2015
+ *      Author: jdi
+ */
+
+#include "Device.h"
+
+Device::Device() {
+	// TODO Auto-generated constructor stub
+
+}
+
+Device::~Device() {
+	// TODO Auto-generated destructor stub
+}
+

src/device/Device.h

+/*
+ * Device.h
+ *
+ *  Created on: 01.09.2015
+ *      Author: jdi
+ */
+
+#ifndef DEVICE_H_
+#define DEVICE_H_
+
+#include <string>
+
+class Device {
+public:
+	Device();
+	virtual ~Device();
+
+	int getName(void) {
+		return 5;
+	}
+};
+
+#endif /* DEVICE_H_ */

src/device/Host.cpp

+/*
+ * Host.cpp
+ *
+ *  Created on: 11.09.2015
+ *      Author: jdi
+ */
+
+#include "Host.h"
+
+Host::Host() {
+	// TODO Auto-generated constructor stub
+
+}
+
+bytes Host::getMac() {
+	return {0x08,0x3e,0x8e,0x16,0x17,0x2c};
+}
+
+bytes Host::getIp() {
+	return {0,0,0,0};
+}
+

src/device/Host.h

+/*
+ * Host.h
+ *
+ *  Created on: 11.09.2015
+ *      Author: jdi
+ */
+
+#ifndef HOST_H_
+#define HOST_H_
+
+#include "../Types.h"
+
+class Host {
+public:
+	Host();
+	virtual ~Host() {}
+	bytes getMac();
+	bytes getIp();
+};
+
+#endif /* HOST_H_ */

src/encode.cpp

+/*
+ * encode.cpp
+ *
+ *  Created on: 15.09.2015
+ *      Author: jdi
+ */
+
+#include <iostream>
+#include <string>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <algorithm>
+
+#include "Packet.h"
+
+int encode(int argc, char *argv[]) {
+	std::string s(argv[1]);
+	std::string delimiter = ":";
+	std::string token;
+	size_t pos = 0;
+	bytes arr = { };
+	int hex;
+	byte b;
+	while ((pos = s.find(delimiter)) != std::string::npos) {
+		token = s.substr(0, pos);
+		sscanf(token.c_str(), "%x", &hex);
+		s.erase(0, pos + delimiter.length());
+		b = hex & 0xFF;
+		arr.push_back(b);
+	}
+	sscanf(s.c_str(), "%x", &hex);
+	b = hex & 0xFF;
+	arr.push_back(b);
+
+	Packet p = Packet(Packet::DISCOVERY);
+	p.encode(arr);
+	printf("%x", arr[0]);
+	for (unsigned i = 1; i < arr.size(); i++) {
+		printf(":%x", arr[i]);
+	}
+	printf("\n");
+
+}

src/smrtlink.cpp

+//============================================================================
+// Name        : smrtlink.cpp
+// Author      : jdi
+// Version     :
+// Copyright   : GPL v2
+// Description : Hello World in C++, Ansi-style
+//============================================================================
+
+#include <cstring>
+#include <getopt.h>
+#include <unistd.h>
+
+#include <iostream>
+#include <string>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "Program.h"
+
+#define USAGE "Usage: smrtlink [-p n|--port n] [-h|--help] [-v|--version] name\n"
+
+#define flag_version 1
+#define flag_help 2
+
+#define no_argument 0
+#define required_argument 1
+#define optional_argument 2
+
+int main(int argc, char *argv[]) {
+	int opt, index, option_flags;
+
+	option_flags = 0;
+
+	const struct option longopts[] = { { "version", no_argument, 0, 'v' }, {
+			"help", no_argument, 0, 'h' },
+			{ "port", required_argument, 0, 'p' },
+			{ "srcport", required_argument, 0, 's' },
+			{ "dstport", required_argument, 0, 'p' }, { 0, 0, 0, 0 }, };
+
+	Program p = Program();
+
+	while ((opt = getopt_long(argc, argv, "vhp:s:", longopts, &index)) != -1) {
+		switch (opt) {
+
+		case 'h':
+			std::cout << "You hit help" << std::endl;
+			option_flags |= flag_version;
+			break;
+
+		case 'v':
+			std::cout << "You hit version" << std::endl;
+			option_flags |= flag_help;
+			break;
+
+		case 'p':
+			p.dst_port = atoi(optarg);
+			option_flags |= 4;
+			break;
+
+		case 's':
+			p.src_port = atoi(optarg);
+			option_flags |= 4;
+			break;
+
+		default: /* '?' */
+			fprintf(stderr, "Unknown option\n");
+			fprintf(stderr, USAGE);
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	if (optind >= argc && !option_flags) {
+		//fprintf(stderr, "Expected argument\n");
+		fprintf(stderr, USAGE);
+		exit(EXIT_FAILURE);
+	}
+
+	while (optind < argc) {
+		if (strcmp(argv[optind], "list") == 0) {
+			printf("List:\n\tA B C\n");
+		}else {
+			printf("->%s\n", argv[optind]);
+		}
+		optind++;
+	}
+
+	if (p.src_port != 0) {
+		printf("src_port = %d\n", p.src_port);
+	}
+
+	if (p.dst_port != 0) {
+		printf("dst_port = %d\n", p.dst_port);
+	}
+
+	if (p.run())
+		exit(EXIT_SUCCESS);
+	else
+		exit(EXIT_FAILURE);
+}
+

src/transfer/Packet.cpp

+/*
+ * Packet.cpp
+ *
+ *  Created on: 03.09.2015
+ *      Author: jdi
+ */
+
+#include <string.h>
+#include <cstdlib>
+#include <time.h>
+#include "Packet.h"
+#include "../Types.h"
+
+Packet::Packet(OpCode c) {
+	srand(time(NULL));
+	sequenceId = rand() % 1000;
+	opCode = c;
+}
+
+Packet::~Packet() {
+	// TODO Auto-generated destructor stub
+}
+
+bytes Packet::getBytes() {
+	int i = 0;
+	push(body, i, payload);
+	push(body, i, (int) PACKET_END);
+	i = 0;
+	push(head, i, version);
+	push(head, i, opCode);
+	push(head, i, switchMac);
+	push(head, i, hostMac);
+	push(head, i, sequenceId);
+	push(head, i, err);
+	push(head, i, this->getLength());
+	push(head, i, fragmentOffset);
+	push(head, i, flag);
+	push(head, i, tokenId);
+	push(head, i, checkSum);
+	bytes data = head + body;
+	return data;
+}
+
+void Packet::setBody(bytes data) {
+	this->body = data;
+}
+
+void Packet::setHostMac(bytes mac) {
+	this->hostMac = mac;
+}
+
+short Packet::getLength() const {
+	return HEADER_LEN + body.size();
+}
+
+int Packet::getCheckSum() const {
+	return checkSum;
+}
+
+void Packet::setCheckSum(int checkSum) {
+	this->checkSum = checkSum;
+}
+
+short Packet::getSequenceId() const {
+	return sequenceId;
+}
+
+void Packet::setSequenceId(short sequenceId) {
+	this->sequenceId = sequenceId;
+}
+
+const bytes& Packet::getSwitchMac() const {
+	return switchMac;
+}
+
+void Packet::setSwitchMac(bytes switchMac) {
+	this->switchMac = switchMac;
+}
+
+const datasets& Packet::getPayload() const {
+	return payload;
+}
+
+void Packet::setPayload(const datasets& payload) {
+	this->payload = payload;
+}
+
+void Packet::encode(bytes &data) {
+	int len = data.size();
+	bytes key = { 191, 155, 227, 202, 99, 162, 79, 104, 49, 18, 190, 164, 30,
+			76, 189, 131, 23, 52, 86, 106, 207, 125, 126, 169, 196, 28, 172, 58,
+			188, 132, 160, 3, 36, 120, 144, 168, 12, 231, 116, 44, 41, 97, 108,
+			213, 42, 198, 32, 148, 218, 107, 247, 112, 204, 14, 66, 68, 91, 224,
+			206, 235, 33, 130, 203, 178, 1, 134, 199, 78, 249, 123, 7, 145, 73,
+			208, 209, 100, 74, 115, 72, 118, 8, 22, 243, 147, 64, 96, 5, 87, 60,
+			113, 233, 152, 31, 219, 143, 174, 232, 153, 245, 158, 254, 70, 170,
+			75, 77, 215, 211, 59, 71, 133, 214, 157, 151, 6, 46, 81, 94, 136,
+			166, 210, 4, 43, 241, 29, 223, 176, 67, 63, 186, 137, 129, 40, 248,
+			255, 55, 15, 62, 183, 222, 105, 236, 197, 127, 54, 179, 194, 229,
+			185, 37, 90, 237, 184, 25, 156, 173, 26, 187, 220, 2, 225, 0, 240,
+			50, 251, 212, 253, 167, 17, 193, 205, 177, 21, 181, 246, 82, 226,
+			38, 101, 163, 182, 242, 92, 20, 11, 95, 13, 230, 16, 121, 124, 109,
+			195, 117, 39, 98, 239, 84, 56, 139, 161, 47, 201, 51, 135, 250, 10,
+			19, 150, 45, 111, 27, 24, 142, 80, 85, 83, 234, 138, 216, 57, 93,
+			65, 154, 141, 122, 34, 140, 128, 238, 88, 89, 9, 146, 171, 149, 53,
+			102, 61, 114, 69, 217, 175, 103, 228, 35, 180, 252, 200, 192, 165,
+			159, 221, 244, 110, 119, 48 };
+	bytes s = key;
+	int i, t, j = 0;
+	for (int k = 0; k < len; k++) {
+		i = (k + 1) % 256;
+		j = (j + s[i]) % 256;
+		t = s[i];
+		s[i] = s[j];
+		s[j] = t;
+		data[k] = ((data[k] ^ s[(s[i] + s[j]) % 256]));
+	}
+}
+
+void Packet::push(bytes &arr, int &index, byte data) {
+	arr[index] = data;
+	index++;
+}
+
+void Packet::push(bytes &arr, int &index, bytes data) {
+	for (unsigned j = 0; j < data.size(); j++)
+		push(arr, index, data[j]);
+}
+
+void Packet::push(bytes &arr, int &index, short data) {
+	byte a = (data >> 8) & 0xFF;
+	push(arr, index, a);
+	a = data & 0xFF;
+	push(arr, index, a);
+}
+
+void Packet::push(bytes &arr, int &index, int data) {
+	byte a = (data >> 24) & 0xFF;
+	push(arr, index, a);
+	a = (data >> 16) & 0xFF;
+	push(arr, index, a);
+	a = (data >> 8) & 0xFF;
+	push(arr, index, a);
+	a = data & 0xFF;
+	push(arr, index, a);
+}
+
+void Packet::push(bytes &arr, int &index, dataset data) {
+	push(arr, index, data.type);
+	push(arr, index, data.len);
+	push(arr, index, data.value);
+}
+
+void Packet::push(bytes &arr, int &index, datasets data) {
+	for (unsigned j = 0; j < data.size(); j++)
+		push(arr, index, data[j]);
+}

src/transfer/Packet.h

+/*
+ * Packet.h
+ *
+ *  Created on: 03.09.2015
+ *      Author: jdi
+ */
+
+#ifndef PACKET_H_
+#define PACKET_H_
+
+#define HEADER_LEN 32
+#define PACKET_END -65536
+
+#include "../Types.h"
+
+class Packet {
+public:
+	enum OpCode {
+		DISCOVERY, GET, SET
+	};
+	Packet(OpCode);
+	virtual ~Packet();
+	void encode(bytes&);
+	bytes getBytes();
+	short getLength() const ;
+	int getCheckSum() const;
+	short getSequenceId() const;
+	const bytes& getSwitchMac() const;
+	const datasets& getPayload() const;
+	void setBody(bytes);
+	void setHostMac(bytes);
+	void setCheckSum(int);
+	void setSequenceId(short);
+	void setSwitchMac(bytes);
+	void setPayload(const datasets& payload);
+
+private:
+	bytes head = bytes(32);
+	bytes body;
+	datasets payload;
+
+	byte version = 1;
+	byte opCode;
+	bytes switchMac = { 0, 0, 0, 0, 0, 0 };
+	bytes hostMac = { 0, 0, 0, 0, 0, 0 };// TODO set Mac
+	bytes broadcastMac = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+	short sequenceId;
+	short tokenId = 0;
+	short fragmentOffset = 0;
+	int err = 0;
+	int checkSum = 0;
+	short flag = 0;
+
+	void buildHead();
+	void buildBody();
+
+	void push(bytes&, int&, short);
+	void push(bytes&, int&, int);
+	void push(bytes&, int&, byte);
+	void push(bytes&, int&, bytes);
+	void push(bytes&, int&, dataset);
+	void push(bytes&, int&, datasets);
+};
+
+#endif /* PACKET_H_ */

src/transfer/Socket.cpp

+/*
+ * Socket.cpp
+ *
+ *  Created on: 02.09.2015
+ *      Author: jdi
+ */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <iostream>
+#include <asio.hpp>
+#include "Socket.h"
+#include "../Types.h"
+
+Socket::Socket(asio::io_service& io_service, short dst_port, short src_port) :
+		socket_(io_service) {
+
+	local_endpoint_ = asio::ip::udp::endpoint(
+			asio::ip::address::from_string("192.168.0.3"), src_port); //a
+	remote_endpoint_ = asio::ip::udp::endpoint(
+			asio::ip::address_v4::from_string("255.255.255.255"), dst_port);
+	broadcast_endpoint_ = asio::ip::udp::endpoint(
+			asio::ip::address_v4::from_string("255.255.255.255"), dst_port);
+	asio::ip::address_v4 local_addr = asio::ip::address_v4::from_string(
+			"192.168.0.3");