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e7e42922b6
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@@ -1,12 +1,13 @@
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# Simple multithreaded UDP server
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# Simple C++ multithreaded UDP server
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[](README.md)
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[](README.md)
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[](LICENSE)
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Simple multithreaded UDP server.
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Simple C++ multithreaded UDP server.
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The number of threads is determined by the number of CPU cores.
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JSON logging.
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JSON logging.
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XTea encryption functions.
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## Getting Started
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@@ -162,7 +162,7 @@ void termHandler(int i) {
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// XTea Encryption, use if necessary...
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void xteaEncipher(unsigned int num_rounds, uint32_t v[2], uint32_t const key[4]) {
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unsigned int i;
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unsigned int i;
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uint32_t v0 = v[0], v1 = v[1], sum = 0, delta = 0x9E3779B9;
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for (i = 0; i < num_rounds; i++) {
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v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + key[sum & 3]);
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@@ -185,26 +185,24 @@ void xteaDecipher(unsigned int num_rounds, uint32_t v[2], uint32_t const key[4])
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void stringCrypt(char *inout, int len, bool encrypt) // encrypt true - encrypt, false - decript
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{
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for (int i = 0; i < len / BLOCK_SIZE; i++) {
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if (encrypt) {
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xteaEncipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
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} else {
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xteaDecipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
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}
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for (int i = 0; i < len / BLOCK_SIZE; i++) {
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if (encrypt) {
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xteaEncipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
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} else {
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xteaDecipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
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}
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}
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if (len % BLOCK_SIZE != 0)
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{
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int mod = len % BLOCK_SIZE;
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if (len % BLOCK_SIZE != 0) {
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int mod = len % BLOCK_SIZE;
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int offset = (len / BLOCK_SIZE) * BLOCK_SIZE;
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char data[BLOCK_SIZE];
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memcpy(data, inout + offset, mod);
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if (encrypt) {
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xteaEncipher(32, (uint32_t*)data, key);
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} else {
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xteaEncipher(32, (uint32_t*)data, key);
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} else {
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xteaDecipher(32, (uint32_t*)data, key);
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}
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memcpy(inout + offset, data, mod);
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cout << mod << endl;
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}
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memcpy(inout + offset, data, mod);
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}
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}
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