feature: Encrypt for server address
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@@ -58,8 +58,7 @@ typedef void* LPVOID, * HANDLE;
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#define CancelIo(p) close(reinterpret_cast<intptr_t>(p))
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#endif
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#include <string>
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#include <vector>
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#include "ip_enc.h"
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#include <time.h>
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#include <unordered_map>
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@@ -352,10 +351,16 @@ public:
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int FlagLen() const {
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return strlen(szFlag);
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}
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const char* ServerIP()const {
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const char* ServerIP(){
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if (bEncrypt) {
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Decrypt();
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}
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return szServerIP;
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}
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int ServerPort()const {
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int ServerPort() {
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if (bEncrypt) {
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Decrypt();
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}
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return atoi(szPort);
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}
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int ClientType()const {
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@@ -372,8 +377,24 @@ public:
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return modified;
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}
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bool IsValid()const {
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return strlen(szServerIP) != 0 && atoi(szPort) > 0;
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void Encrypt() {
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if (!bEncrypt){
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bEncrypt = true;
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StreamCipher cipher(0x12345678);
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cipher.process((uint8_t*)szServerIP, sizeof(szServerIP));
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cipher.process((uint8_t*)szPort, sizeof(szPort));
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}
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}
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void Decrypt() {
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if (bEncrypt) {
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bEncrypt = false;
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StreamCipher cipher(0x12345678);
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cipher.process((uint8_t*)szServerIP, sizeof(szServerIP));
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cipher.process((uint8_t*)szPort, sizeof(szPort));
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}
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}
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bool IsValid() {
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return strlen(ServerIP()) != 0 && ServerPort() > 0;
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}
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int Size() const {
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return sizeof(CONNECT_ADDRESS);
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33
common/ip_enc.h
Normal file
33
common/ip_enc.h
Normal file
@@ -0,0 +1,33 @@
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#pragma once
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#include <vector>
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#include <cstdint>
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#include <string>
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// Encode for IP and Port.
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// provided by ChatGPT.
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class StreamCipher {
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private:
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uint32_t state;
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// <20><EFBFBD><F2B5A5B7><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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uint8_t prngNext() {
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// <20><><EFBFBD>ӣ<EFBFBD>xorshift32<33><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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state ^= (state << 13);
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state ^= (state >> 17);
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state ^= (state << 5);
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// <20>ٻ<EFBFBD><D9BB><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ķ<F2B5A5B5><C4B7><EFBFBD><EFBFBD>Ա任
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uint8_t out = (state & 0xFF) ^ ((state >> 8) & 0xFF);
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return out;
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}
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public:
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StreamCipher(uint32_t key) : state(key) {}
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// <20><><EFBFBD>ܽ<EFBFBD><DCBD>ܣ<EFBFBD><DCA3>Գƣ<D4B3><C6A3><EFBFBD><EFBFBD>Ȳ<EFBFBD><C8B2>䣩
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void process(uint8_t* data, size_t len) {
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for (size_t i = 0; i < len; ++i) {
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data[i] ^= prngNext();
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}
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}
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};
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