133 lines
4.4 KiB
C++
133 lines
4.4 KiB
C++
#include <iostream>
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#include <windows.h>
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#include <vector>
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#include "DLL.h"
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#define MOD_MAJOR_VERSION 4
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#define MOD_MINOR_VERSION 1
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#define no_optimize __attribute__((optimize("O0")))
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#define MUST_IMPORT(dllname, name)\
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dllname->name = GetProcAddress(dllname->handle, #name);\
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if (!dllname->name) {\
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char ERROR_MESSAGE_POPUP[512] = {0};\
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sprintf(ERROR_MESSAGE_POPUP, "%s does not export " #name ".\n", dllname->fileName.c_str());\
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Popup("Error", ERROR_MESSAGE_POPUP);\
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exit(1);\
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}
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#define IMPORT(dllname, name)\
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dllname->name = GetProcAddress(dllname->handle, #name);
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#define PUSH_ALL "push rax\npush rbx\npush rcx\npush rdx\npush rsi\npush rdi\npush rbp\npush r8\npush r9\npush r10\npush r11\npush r12\npush r13\npush r14\npush r15\n"
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#define POP_ALL "pop r15\npop r14\npop r13\npop r12\npop r11\npop r10\npop r9\npop r8\npop rbp\npop rdi\npop rsi\npop rdx\npop rcx\npop rbx\npop rax\n"
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#define PREPARE_STACK "mov rax, rsp \n and rsp, 0xFFFFFFFFFFFFFFF0 \n push rax \n sub rsp, 0x28 \n"
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#define RESTORE_STACK "add rsp, 0x28 \n pop rsp \n"
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using namespace std;
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void* base;
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vector <DLL*> modDLLs;
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void WriteFarJMP(void* source, void* destination) {
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DWORD dwOldProtection;
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VirtualProtect(source, 14, PAGE_EXECUTE_READWRITE, &dwOldProtection);
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char* location = (char*)source;
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// Far jump
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*((UINT16*)&location[0]) = 0x25FF;
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// mode
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*((UINT32*)&location[2]) = 0x00000000;
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*((UINT64*)&location[6]) = (UINT64)destination;
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VirtualProtect(location, 14, dwOldProtection, &dwOldProtection);
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}
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#include "callbacks/ChatHandler.h"
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#include "callbacks/P2PRequestHandler.h"
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#include "callbacks/CheckInventoryFullHandler.h"
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void SetupHandlers() {
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SetupChatHandler();
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SetupP2PRequestHandler();
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SetupCheckInventoryFullHandler();
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}
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void Popup(const char* title, char* msg ){
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MessageBoxA(0, msg, title, MB_OK | MB_ICONINFORMATION);
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}
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extern "C" __declspec(dllexport) BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
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switch (fdwReason) {
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case DLL_PROCESS_ATTACH:
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base = GetModuleHandle(NULL);
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SetupHandlers();
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//Find mods
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HANDLE hFind;
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WIN32_FIND_DATA data;
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CreateDirectory("Mods", NULL);
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hFind = FindFirstFile("Mods\\*.dll", &data);
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if (hFind != INVALID_HANDLE_VALUE) {
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do {
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// We should be loaded into the application's address space, so we can just LoadLibraryA
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DLL* dll = new DLL(string("Mods\\") + data.cFileName);
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dll->Load();
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printf("Loaded %s\n", dll->fileName.c_str());
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modDLLs.push_back(dll);
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} while (FindNextFile(hFind, &data));
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FindClose(hFind);
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}
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// Find all the functions the mods may export
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for (DLL* dll: modDLLs) {
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MUST_IMPORT(dll, ModMajorVersion);
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MUST_IMPORT(dll, ModMinorVersion);
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MUST_IMPORT(dll, ModPreInitialize);
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IMPORT(dll, ModInitialize);
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IMPORT(dll, HandleChat);
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IMPORT(dll, HandleP2PRequest);
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IMPORT(dll, HandleInventoryCheck);
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}
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// Ensure version compatibility
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char msg[512] = {0};
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for (DLL* dll: modDLLs) {
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int majorVersion = ((int(*)())dll->ModMajorVersion)();
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int minorVersion = ((int(*)())dll->ModMinorVersion)();
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if (majorVersion != MOD_MAJOR_VERSION) {
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sprintf(msg, "%s has major version %d but requires %d.\n", dll->fileName.c_str(), majorVersion, MOD_MAJOR_VERSION);
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Popup("Error", msg);
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exit(1);
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}
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if (minorVersion > MOD_MINOR_VERSION) {
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sprintf(msg, "%s has minor version %d but requires %d or lower.\n", dll->fileName.c_str(), minorVersion, MOD_MINOR_VERSION);
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Popup("Error", msg);
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exit(1);
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}
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}
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// Run Initialization routines on all mods
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for (DLL* dll: modDLLs) {
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((void(*)())dll->ModPreInitialize)();
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}
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for (DLL* dll: modDLLs) {
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if (dll->ModInitialize) {
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((void(*)())dll->ModInitialize)();
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}
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}
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}
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return true;
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}
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