basics

src/transfer/Packet.cpp

@@ -0,0 +1,157 @@
+/*
+ * 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]);
+}