Merge pull request #19 from p0358/main

Big refactor of launching process

1 files changed, 140 insertions, 18 deletions

diff --git a/NorthstarDedicatedTest/hooks.cpp b/NorthstarDedicatedTest/hooks.cpp
index 3de8d483..0e653d4e 100644
--- a/NorthstarDedicatedTest/hooks.cpp
+++ b/NorthstarDedicatedTest/hooks.cpp
@@ -5,15 +5,31 @@
 #include <wchar.h>
 #include <iostream>
 #include <vector>
+#include <fstream>
+#include <sstream>
+#include <filesystem>
+#include <Psapi.h>
+
+typedef LPSTR(*GetCommandLineAType)();
+LPSTR GetCommandLineAHook();
 
 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 +37,57 @@ 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));
+}
+
+LPSTR GetCommandLineAHook()
+{
+	static char* cmdlineModified;
+	static char* cmdlineOrg;
+
+	if (cmdlineOrg == nullptr || cmdlineModified == 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();
+		cmdlineModified = new char[len + 1];
+		if (!cmdlineModified)
+		{
+			spdlog::error("malloc failed for command line");
+			return cmdlineOrg;
+		}
+		memcpy(cmdlineModified, args.c_str(), len + 1);
+		
+		spdlog::info("Command line: {}", cmdlineModified);
+	}
+
+	return cmdlineModified;
 }
 
 // dll load callback stuff
@@ -46,21 +111,75 @@ void AddDllLoadCallback(std::string dll, DllLoadCallbackFuncType callback)
 	dllLoadCallbacks.push_back(callbackStruct);
 }
 
-HMODULE LoadLibraryExAHook(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags)
+void CallLoadLibraryACallbacks(LPCSTR lpLibFileName, HMODULE moduleAddress)
 {
-	HMODULE moduleAddress = LoadLibraryExAOriginal(lpLibFileName, hFile, dwFlags);
-	
-	if (moduleAddress)
+	for (auto& callbackStruct : dllLoadCallbacks)
+	{
+		if (!callbackStruct->called && strstr(lpLibFileName + (strlen(lpLibFileName) - callbackStruct->dll.length()), 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) - wcharStrDll.length()), callbackDll) != nullptr)
+		{
+			callbackStruct->callback(moduleAddress);
+			callbackStruct->called = true;
+		}
+	}
+}
+
+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 (auto& callbackStruct : dllLoadCallbacks)
+		for (i = 0; i < (cbNeeded / sizeof(HMODULE)); i++)
 		{
-			if (!callbackStruct->called && strstr(lpLibFileName + (strlen(lpLibFileName) - strlen(callbackStruct->dll.c_str())), callbackStruct->dll.c_str()) != nullptr)
+			wchar_t szModName[MAX_PATH];
+
+			// Get the full path to the module's file.
+			if (GetModuleFileNameExW(hProcess, hMods[i], szModName, sizeof(szModName) / sizeof(TCHAR)))
 			{
-				callbackStruct->callback(moduleAddress);
-				callbackStruct->called = true;
+				CallLoadLibraryWCallbacks(szModName, hMods[i]);
 			}
 		}
 	}
+}
+
+HMODULE LoadLibraryExAHook(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags)
+{
+	HMODULE moduleAddress = LoadLibraryExAOriginal(lpLibFileName, hFile, dwFlags);
+	
+	if (moduleAddress)
+	{
+		CallLoadLibraryACallbacks(lpLibFileName, moduleAddress);
+	}
+
+	return moduleAddress;
+}
+
+HMODULE LoadLibraryAHook(LPCSTR lpLibFileName)
+{
+	HMODULE moduleAddress = LoadLibraryAOriginal(lpLibFileName);
+
+	if (moduleAddress)
+	{
+		CallLoadLibraryACallbacks(lpLibFileName, moduleAddress);
+	}
 
 	return moduleAddress;
 }
@@ -71,16 +190,19 @@ 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;