diff options
Diffstat (limited to 'NorthstarDedicatedTest/hooks.cpp')
-rw-r--r-- | NorthstarDedicatedTest/hooks.cpp | 136 |
1 files changed, 118 insertions, 18 deletions
diff --git a/NorthstarDedicatedTest/hooks.cpp b/NorthstarDedicatedTest/hooks.cpp index 3de8d483..e58b7afc 100644 --- a/NorthstarDedicatedTest/hooks.cpp +++ b/NorthstarDedicatedTest/hooks.cpp @@ -5,15 +5,32 @@ #include <wchar.h> #include <iostream> #include <vector> +#include <fstream> +#include <sstream> +#include <filesystem> + +typedef LPSTR(*GetCommandLineAType)(); +LPSTR GetCommandLineAHook(); + +// note that these load library callbacks only support explicitly loaded dynamic libraries typedef HMODULE(*LoadLibraryExAType)(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags); HMODULE LoadLibraryExAHook(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags); +typedef HMODULE(*LoadLibraryAType)(LPCSTR lpLibFileName); +HMODULE LoadLibraryAHook(LPCSTR lpLibFileName); + typedef HMODULE(*LoadLibraryExWType)(LPCWSTR lpLibFileName, HANDLE hFile, DWORD dwFlags); HMODULE LoadLibraryExWHook(LPCWSTR lpLibFileName, HANDLE hFile, DWORD dwFlags); +typedef HMODULE(*LoadLibraryWType)(LPCWSTR lpLibFileName); +HMODULE LoadLibraryWHook(LPCWSTR lpLibFileName); + +GetCommandLineAType GetCommandLineAOriginal; LoadLibraryExAType LoadLibraryExAOriginal; +LoadLibraryAType LoadLibraryAOriginal; LoadLibraryExWType LoadLibraryExWOriginal; +LoadLibraryWType LoadLibraryWOriginal; void InstallInitialHooks() { @@ -21,8 +38,57 @@ void InstallInitialHooks() spdlog::error("MH_Initialize failed"); HookEnabler hook; + ENABLER_CREATEHOOK(hook, &GetCommandLineA, &GetCommandLineAHook, reinterpret_cast<LPVOID*>(&GetCommandLineAOriginal)); ENABLER_CREATEHOOK(hook, &LoadLibraryExA, &LoadLibraryExAHook, reinterpret_cast<LPVOID*>(&LoadLibraryExAOriginal)); + ENABLER_CREATEHOOK(hook, &LoadLibraryA, &LoadLibraryAHook, reinterpret_cast<LPVOID*>(&LoadLibraryAOriginal)); ENABLER_CREATEHOOK(hook, &LoadLibraryExW, &LoadLibraryExWHook, reinterpret_cast<LPVOID*>(&LoadLibraryExWOriginal)); + ENABLER_CREATEHOOK(hook, &LoadLibraryW, &LoadLibraryWHook, reinterpret_cast<LPVOID*>(&LoadLibraryWOriginal)); +} + +char* cmdlineResult; +LPSTR GetCommandLineAHook() +{ + static char* cmdlineOrg; + + if (cmdlineOrg == nullptr || cmdlineResult == nullptr) + { + cmdlineOrg = GetCommandLineAOriginal(); + bool isDedi = strstr(cmdlineOrg, "-dedicated"); // well, this one has to be a real argument + + std::string args; + std::ifstream cmdlineArgFile; + + // it looks like CommandLine() prioritizes parameters apprearing first, so we want the real commandline to take priority + // not to mention that cmdlineOrg starts with the EXE path + args.append(cmdlineOrg); + args.append(" "); + + // append those from the file + + cmdlineArgFile = std::ifstream(!isDedi ? "ns_startup_args.txt" : "ns_startup_args_dedi.txt"); + + if (cmdlineArgFile) + { + std::stringstream argBuffer; + argBuffer << cmdlineArgFile.rdbuf(); + cmdlineArgFile.close(); + + args.append(argBuffer.str()); + } + + auto len = args.length(); + cmdlineResult = reinterpret_cast<char*>(malloc(len + 1)); + if (!cmdlineResult) + { + spdlog::error("malloc failed for command line"); + return cmdlineOrg; + } + memcpy(cmdlineResult, args.c_str(), len + 1); + + spdlog::info("Command line: {}", cmdlineResult); + } + + return cmdlineResult; } // dll load callback stuff @@ -46,20 +112,51 @@ void AddDllLoadCallback(std::string dll, DllLoadCallbackFuncType callback) dllLoadCallbacks.push_back(callbackStruct); } +void CallLoadLibraryACallbacks(LPCSTR lpLibFileName, HMODULE moduleAddress) +{ + for (auto& callbackStruct : dllLoadCallbacks) + { + if (!callbackStruct->called && strstr(lpLibFileName + (strlen(lpLibFileName) - strlen(callbackStruct->dll.c_str())), callbackStruct->dll.c_str()) != nullptr) + { + callbackStruct->callback(moduleAddress); + callbackStruct->called = true; + } + } +} + +void CallLoadLibraryWCallbacks(LPCWSTR lpLibFileName, HMODULE moduleAddress) +{ + for (auto& callbackStruct : dllLoadCallbacks) + { + std::wstring wcharStrDll = std::wstring(callbackStruct->dll.begin(), callbackStruct->dll.end()); + const wchar_t* callbackDll = wcharStrDll.c_str(); + if (!callbackStruct->called && wcsstr(lpLibFileName + (wcslen(lpLibFileName) - wcslen(callbackDll)), callbackDll) != nullptr) + { + callbackStruct->callback(moduleAddress); + callbackStruct->called = true; + } + } +} + HMODULE LoadLibraryExAHook(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags) { HMODULE moduleAddress = LoadLibraryExAOriginal(lpLibFileName, hFile, dwFlags); if (moduleAddress) { - for (auto& callbackStruct : dllLoadCallbacks) - { - if (!callbackStruct->called && strstr(lpLibFileName + (strlen(lpLibFileName) - strlen(callbackStruct->dll.c_str())), callbackStruct->dll.c_str()) != nullptr) - { - callbackStruct->callback(moduleAddress); - callbackStruct->called = true; - } - } + CallLoadLibraryACallbacks(lpLibFileName, moduleAddress); + } + + return moduleAddress; +} + +HMODULE LoadLibraryAHook(LPCSTR lpLibFileName) +{ + HMODULE moduleAddress = LoadLibraryAOriginal(lpLibFileName); + + if (moduleAddress) + { + CallLoadLibraryACallbacks(lpLibFileName, moduleAddress); } return moduleAddress; @@ -71,16 +168,19 @@ HMODULE LoadLibraryExWHook(LPCWSTR lpLibFileName, HANDLE hFile, DWORD dwFlags) if (moduleAddress) { - for (auto& callbackStruct : dllLoadCallbacks) - { - std::wstring wcharStrDll = std::wstring(callbackStruct->dll.begin(), callbackStruct->dll.end()); - const wchar_t* callbackDll = wcharStrDll.c_str(); - if (!callbackStruct->called && wcsstr(lpLibFileName + (wcslen(lpLibFileName) - wcslen(callbackDll)), callbackDll) != nullptr) - { - callbackStruct->callback(moduleAddress); - callbackStruct->called = true; - } - } + CallLoadLibraryWCallbacks(lpLibFileName, moduleAddress); + } + + return moduleAddress; +} + +HMODULE LoadLibraryWHook(LPCWSTR lpLibFileName) +{ + HMODULE moduleAddress = LoadLibraryWOriginal(lpLibFileName); + + if (moduleAddress) + { + CallLoadLibraryWCallbacks(lpLibFileName, moduleAddress); } return moduleAddress; |