diff options
Diffstat (limited to 'NorthstarDLL/core/hooks.cpp')
| -rw-r--r-- | NorthstarDLL/core/hooks.cpp | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/NorthstarDLL/core/hooks.cpp b/NorthstarDLL/core/hooks.cpp deleted file mode 100644 index 26b3fe57..00000000 --- a/NorthstarDLL/core/hooks.cpp +++ /dev/null @@ -1,474 +0,0 @@ -#include "dedicated/dedicated.h" -#include "plugins/pluginbackend.h" - -#include <iostream> -#include <wchar.h> -#include <iostream> -#include <vector> -#include <fstream> -#include <sstream> -#include <filesystem> -#include <Psapi.h> - -#define XINPUT1_3_DLL "XInput1_3.dll" - -AUTOHOOK_INIT() - -// called from the ON_DLL_LOAD macros -__dllLoadCallback::__dllLoadCallback( - eDllLoadCallbackSide side, const std::string dllName, DllLoadCallbackFuncType callback, std::string uniqueStr, std::string reliesOn) -{ - // parse reliesOn array from string - std::vector<std::string> reliesOnArray; - - if (reliesOn.length() && reliesOn[0] != '(') - { - reliesOnArray.push_back(reliesOn); - } - else - { - // follows the format (tag, tag, tag) - std::string sCurrentTag; - for (int i = 1; i < reliesOn.length(); i++) - { - if (!isspace(reliesOn[i])) - { - if (reliesOn[i] == ',' || reliesOn[i] == ')') - { - reliesOnArray.push_back(sCurrentTag); - sCurrentTag = ""; - } - else - sCurrentTag += reliesOn[i]; - } - } - } - - switch (side) - { - case eDllLoadCallbackSide::UNSIDED: - { - AddDllLoadCallback(dllName, callback, uniqueStr, reliesOnArray); - break; - } - - case eDllLoadCallbackSide::CLIENT: - { - AddDllLoadCallbackForClient(dllName, callback, uniqueStr, reliesOnArray); - break; - } - - case eDllLoadCallbackSide::DEDICATED_SERVER: - { - AddDllLoadCallbackForDedicatedServer(dllName, callback, uniqueStr, reliesOnArray); - break; - } - } -} - -void __fileAutohook::Dispatch() -{ - for (__autovar* var : vars) - var->Dispatch(); - - for (__autohook* hook : hooks) - hook->Dispatch(); -} - -void __fileAutohook::DispatchForModule(const char* pModuleName) -{ - const int iModuleNameLen = strlen(pModuleName); - - for (__autohook* hook : hooks) - if ((hook->iAddressResolutionMode == __autohook::OFFSET_STRING && !strncmp(pModuleName, hook->pAddrString, iModuleNameLen)) || - (hook->iAddressResolutionMode == __autohook::PROCADDRESS && !strcmp(pModuleName, hook->pModuleName))) - hook->Dispatch(); -} - -ManualHook::ManualHook(const char* funcName, LPVOID func) : pHookFunc(func), ppOrigFunc(nullptr) -{ - const int iFuncNameStrlen = strlen(funcName); - pFuncName = new char[iFuncNameStrlen]; - memcpy(pFuncName, funcName, iFuncNameStrlen); -} - -ManualHook::ManualHook(const char* funcName, LPVOID* orig, LPVOID func) : pHookFunc(func), ppOrigFunc(orig) -{ - const int iFuncNameStrlen = strlen(funcName); - pFuncName = new char[iFuncNameStrlen]; - memcpy(pFuncName, funcName, iFuncNameStrlen); -} - -bool ManualHook::Dispatch(LPVOID addr, LPVOID* orig) -{ - if (orig) - ppOrigFunc = orig; - - if (MH_CreateHook(addr, pHookFunc, ppOrigFunc) == MH_OK) - { - if (MH_EnableHook(addr) == MH_OK) - { - spdlog::info("Enabling hook {}", pFuncName); - return true; - } - else - spdlog::error("MH_EnableHook failed for function {}", pFuncName); - } - else - spdlog::error("MH_CreateHook failed for function {}", pFuncName); - - return false; -} - -uintptr_t ParseDLLOffsetString(const char* pAddrString) -{ - // in the format server.dll + 0xDEADBEEF - int iDllNameEnd = 0; - for (; !isspace(pAddrString[iDllNameEnd]) && pAddrString[iDllNameEnd] != '+'; iDllNameEnd++) - ; - - char* pModuleName = new char[iDllNameEnd + 1]; - memcpy(pModuleName, pAddrString, iDllNameEnd); - pModuleName[iDllNameEnd] = '\0'; - - // get the module address - const HMODULE pModuleAddr = GetModuleHandleA(pModuleName); - - if (!pModuleAddr) - return 0; - - // get the offset string - uintptr_t iOffset = 0; - - int iOffsetBegin = iDllNameEnd; - int iOffsetEnd = strlen(pAddrString); - - // seek until we hit the start of the number offset - for (; !(pAddrString[iOffsetBegin] >= '0' && pAddrString[iOffsetBegin] <= '9') && pAddrString[iOffsetBegin]; iOffsetBegin++) - ; - - bool bIsHex = pAddrString[iOffsetBegin] == '0' && (pAddrString[iOffsetBegin + 1] == 'X' || pAddrString[iOffsetBegin + 1] == 'x'); - if (bIsHex) - iOffset = std::stoi(pAddrString + iOffsetBegin + 2, 0, 16); - else - iOffset = std::stoi(pAddrString + iOffsetBegin); - - return ((uintptr_t)pModuleAddr + iOffset); -} - -// dll load callback stuff -// this allows for code to register callbacks to be run as soon as a dll is loaded, mainly to allow for patches to be made on dll load -struct DllLoadCallback -{ - std::string dll; - DllLoadCallbackFuncType callback; - std::string tag; - std::vector<std::string> reliesOn; - bool called; -}; - -// HACK: declaring and initialising this vector at file scope crashes on debug builds due to static initialisation order -// using a static var like this ensures that the vector is initialised lazily when it's used -std::vector<DllLoadCallback>& GetDllLoadCallbacks() -{ - static std::vector<DllLoadCallback> vec = std::vector<DllLoadCallback>(); - return vec; -} - -void AddDllLoadCallback(std::string dll, DllLoadCallbackFuncType callback, std::string tag, std::vector<std::string> reliesOn) -{ - DllLoadCallback& callbackStruct = GetDllLoadCallbacks().emplace_back(); - - callbackStruct.dll = dll; - callbackStruct.callback = callback; - callbackStruct.tag = tag; - callbackStruct.reliesOn = reliesOn; - callbackStruct.called = false; -} - -void AddDllLoadCallbackForDedicatedServer( - std::string dll, DllLoadCallbackFuncType callback, std::string tag, std::vector<std::string> reliesOn) -{ - if (!IsDedicatedServer()) - return; - - AddDllLoadCallback(dll, callback, tag, reliesOn); -} - -void AddDllLoadCallbackForClient(std::string dll, DllLoadCallbackFuncType callback, std::string tag, std::vector<std::string> reliesOn) -{ - if (IsDedicatedServer()) - return; - - AddDllLoadCallback(dll, callback, tag, reliesOn); -} - -void MakeHook(LPVOID pTarget, LPVOID pDetour, void* ppOriginal, const char* pFuncName) -{ - char* pStrippedFuncName = (char*)pFuncName; - // strip & char from funcname - if (*pStrippedFuncName == '&') - pStrippedFuncName++; - - if (MH_CreateHook(pTarget, pDetour, (LPVOID*)ppOriginal) == MH_OK) - { - if (MH_EnableHook(pTarget) == MH_OK) - spdlog::info("Enabling hook {}", pStrippedFuncName); - else - spdlog::error("MH_EnableHook failed for function {}", pStrippedFuncName); - } - else - spdlog::error("MH_CreateHook failed for function {}", pStrippedFuncName); -} - -AUTOHOOK_ABSOLUTEADDR(_GetCommandLineA, (LPVOID)GetCommandLineA, LPSTR, WINAPI, ()) -{ - static char* cmdlineModified; - static char* cmdlineOrg; - - if (cmdlineOrg == nullptr || cmdlineModified == nullptr) - { - cmdlineOrg = _GetCommandLineA(); - bool isDedi = strstr(cmdlineOrg, "-dedicated"); // well, this one has to be a real argument - bool ignoreStartupArgs = strstr(cmdlineOrg, "-nostartupargs"); - - 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 - - if (!ignoreStartupArgs) - { - - cmdlineArgFile = std::ifstream(!isDedi ? "ns_startup_args.txt" : "ns_startup_args_dedi.txt"); - - if (cmdlineArgFile) - { - std::stringstream argBuffer; - argBuffer << cmdlineArgFile.rdbuf(); - cmdlineArgFile.close(); - - // if some other command line option includes "-northstar" in the future then you have to refactor this check to check with - // both either space after or ending with - if (!isDedi && argBuffer.str().find("-northstar") != std::string::npos) - MessageBoxA( - NULL, - "The \"-northstar\" command line option is NOT supposed to go into ns_startup_args.txt file!\n\nThis option is " - "supposed to go into Origin/Steam game launch options, and then you are supposed to launch the original " - "Titanfall2.exe " - "rather than NorthstarLauncher.exe to make use of it.", - "Northstar Warning", - MB_ICONWARNING); - - args.append(argBuffer.str()); - } - } - - auto len = args.length(); - cmdlineModified = new char[len + 1]; - if (!cmdlineModified) - { - spdlog::error("malloc failed for command line"); - return cmdlineOrg; - } - memcpy(cmdlineModified, args.c_str(), len + 1); - } - - return cmdlineModified; -} - -std::vector<std::string> calledTags; -void CallLoadLibraryACallbacks(LPCSTR lpLibFileName, HMODULE moduleAddress) -{ - CModule cModule(moduleAddress); - - while (true) - { - bool bDoneCalling = true; - - for (auto& callbackStruct : GetDllLoadCallbacks()) - { - if (!callbackStruct.called && fs::path(lpLibFileName).filename() == fs::path(callbackStruct.dll).filename()) - { - bool bShouldContinue = false; - - if (!callbackStruct.reliesOn.empty()) - { - for (std::string tag : callbackStruct.reliesOn) - { - if (std::find(calledTags.begin(), calledTags.end(), tag) == calledTags.end()) - { - bDoneCalling = false; - bShouldContinue = true; - break; - } - } - } - - if (bShouldContinue) - continue; - - callbackStruct.callback(moduleAddress); - calledTags.push_back(callbackStruct.tag); - callbackStruct.called = true; - } - } - - if (bDoneCalling) - break; - } -} - -void CallLoadLibraryWCallbacks(LPCWSTR lpLibFileName, HMODULE moduleAddress) -{ - CModule cModule(moduleAddress); - - while (true) - { - bool bDoneCalling = true; - - for (auto& callbackStruct : GetDllLoadCallbacks()) - { - if (!callbackStruct.called && fs::path(lpLibFileName).filename() == fs::path(callbackStruct.dll).filename()) - { - bool bShouldContinue = false; - - if (!callbackStruct.reliesOn.empty()) - { - for (std::string tag : callbackStruct.reliesOn) - { - if (std::find(calledTags.begin(), calledTags.end(), tag) == calledTags.end()) - { - bDoneCalling = false; - bShouldContinue = true; - break; - } - } - } - - if (bShouldContinue) - continue; - - callbackStruct.callback(moduleAddress); - calledTags.push_back(callbackStruct.tag); - callbackStruct.called = true; - } - } - - if (bDoneCalling) - break; - } -} - -void CallAllPendingDLLLoadCallbacks() -{ - HMODULE hMods[1024]; - HANDLE hProcess = GetCurrentProcess(); - DWORD cbNeeded; - unsigned int i; - - // Get a list of all the modules in this process. - if (EnumProcessModules(hProcess, hMods, sizeof(hMods), &cbNeeded)) - { - for (i = 0; i < (cbNeeded / sizeof(HMODULE)); i++) - { - wchar_t szModName[MAX_PATH]; - - // Get the full path to the module's file. - if (GetModuleFileNameExW(hProcess, hMods[i], szModName, sizeof(szModName) / sizeof(TCHAR))) - { - CallLoadLibraryWCallbacks(szModName, hMods[i]); - } - } - } -} - -// clang-format off -AUTOHOOK_ABSOLUTEADDR(_LoadLibraryExA, (LPVOID)LoadLibraryExA, -HMODULE, WINAPI, (LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags)) -// clang-format on -{ - HMODULE moduleAddress; - - LPCSTR lpLibFileNameEnd = lpLibFileName + strlen(lpLibFileName); - LPCSTR lpLibName = lpLibFileNameEnd - strlen(XINPUT1_3_DLL); - - // replace xinput dll with one that has ASLR - if (lpLibFileName <= lpLibName && !strncmp(lpLibName, XINPUT1_3_DLL, strlen(XINPUT1_3_DLL) + 1)) - { - moduleAddress = _LoadLibraryExA("XInput9_1_0.dll", hFile, dwFlags); - - if (!moduleAddress) - { - MessageBoxA(0, "Could not find XInput9_1_0.dll", "Northstar", MB_ICONERROR); - exit(EXIT_FAILURE); - - return nullptr; - } - } - else - moduleAddress = _LoadLibraryExA(lpLibFileName, hFile, dwFlags); - - if (moduleAddress) - { - CallLoadLibraryACallbacks(lpLibFileName, moduleAddress); - InformPluginsDLLLoad(fs::path(lpLibFileName), moduleAddress); - } - - return moduleAddress; -} - -// clang-format off -AUTOHOOK_ABSOLUTEADDR(_LoadLibraryA, (LPVOID)LoadLibraryA, -HMODULE, WINAPI, (LPCSTR lpLibFileName)) -// clang-format on -{ - HMODULE moduleAddress = _LoadLibraryA(lpLibFileName); - - if (moduleAddress) - CallLoadLibraryACallbacks(lpLibFileName, moduleAddress); - - return moduleAddress; -} - -// clang-format off -AUTOHOOK_ABSOLUTEADDR(_LoadLibraryExW, (LPVOID)LoadLibraryExW, -HMODULE, WINAPI, (LPCWSTR lpLibFileName, HANDLE hFile, DWORD dwFlags)) -// clang-format on -{ - HMODULE moduleAddress = _LoadLibraryExW(lpLibFileName, hFile, dwFlags); - - if (moduleAddress) - CallLoadLibraryWCallbacks(lpLibFileName, moduleAddress); - - return moduleAddress; -} - -// clang-format off -AUTOHOOK_ABSOLUTEADDR(_LoadLibraryW, (LPVOID)LoadLibraryW, -HMODULE, WINAPI, (LPCWSTR lpLibFileName)) -// clang-format on -{ - HMODULE moduleAddress = _LoadLibraryW(lpLibFileName); - - if (moduleAddress) - { - CallLoadLibraryWCallbacks(lpLibFileName, moduleAddress); - InformPluginsDLLLoad(fs::path(lpLibFileName), moduleAddress); - } - - return moduleAddress; -} - -void InstallInitialHooks() -{ - if (MH_Initialize() != MH_OK) - spdlog::error("MH_Initialize (minhook initialization) failed"); - - AUTOHOOK_DISPATCH() -} |