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authorEmma Miler <emma.pi@protonmail.com>2022-12-19 19:32:16 +0100
committerGitHub <noreply@github.com>2022-12-19 19:32:16 +0100
commite04f3b36accccb590a2d51b4829256b9964ac3fd (patch)
tree20ee30c82e6f53e6e772be2e1b9613eebca12bf3 /NorthstarDLL/core/hooks.h
parent33f18a735986dcd136bf8ba70ad8331306c28227 (diff)
downloadNorthstarLauncher-e04f3b36accccb590a2d51b4829256b9964ac3fd.tar.gz
NorthstarLauncher-e04f3b36accccb590a2d51b4829256b9964ac3fd.zip
Restructuring (#365)
* Remove launcher proxy * Restructuring * More restructuring * Fix include dirs * Fix merge * Remove clang thing * Filters * Oops
Diffstat (limited to 'NorthstarDLL/core/hooks.h')
-rw-r--r--NorthstarDLL/core/hooks.h311
1 files changed, 311 insertions, 0 deletions
diff --git a/NorthstarDLL/core/hooks.h b/NorthstarDLL/core/hooks.h
new file mode 100644
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+++ b/NorthstarDLL/core/hooks.h
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+#pragma once
+#include "memory.h"
+
+#include <string>
+#include <iostream>
+
+void InstallInitialHooks();
+
+typedef void (*DllLoadCallbackFuncType)(CModule moduleAddress);
+void AddDllLoadCallback(std::string dll, DllLoadCallbackFuncType callback, std::string tag = "", std::vector<std::string> reliesOn = {});
+void AddDllLoadCallbackForDedicatedServer(
+ std::string dll, DllLoadCallbackFuncType callback, std::string tag = "", std::vector<std::string> reliesOn = {});
+void AddDllLoadCallbackForClient(
+ std::string dll, DllLoadCallbackFuncType callback, std::string tag = "", std::vector<std::string> reliesOn = {});
+
+void CallAllPendingDLLLoadCallbacks();
+
+// new dll load callback stuff
+enum class eDllLoadCallbackSide
+{
+ UNSIDED,
+ CLIENT,
+ DEDICATED_SERVER
+};
+
+class __dllLoadCallback
+{
+ public:
+ __dllLoadCallback() = delete;
+ __dllLoadCallback(
+ eDllLoadCallbackSide side,
+ const std::string dllName,
+ DllLoadCallbackFuncType callback,
+ std::string uniqueStr,
+ std::string reliesOn);
+};
+
+#define __CONCAT3(x, y, z) x##y##z
+#define CONCAT3(x, y, z) __CONCAT3(x, y, z)
+#define __CONCAT2(x, y) x##y
+#define CONCAT2(x, y) __CONCAT2(x, y)
+#define __STR(s) #s
+
+// adds a callback to be called when a given dll is loaded, for creating hooks and such
+#define __ON_DLL_LOAD(dllName, side, uniquestr, reliesOn, args) \
+ void CONCAT2(__dllLoadCallback, uniquestr) args; \
+ namespace \
+ { \
+ __dllLoadCallback CONCAT2(__dllLoadCallbackInstance, __LINE__)( \
+ side, dllName, CONCAT2(__dllLoadCallback, uniquestr), __STR(uniquestr), reliesOn); \
+ } \
+ void CONCAT2(__dllLoadCallback, uniquestr) args
+
+#define ON_DLL_LOAD(dllName, uniquestr, args) __ON_DLL_LOAD(dllName, eDllLoadCallbackSide::UNSIDED, uniquestr, "", args)
+#define ON_DLL_LOAD_RELIESON(dllName, uniquestr, reliesOn, args) \
+ __ON_DLL_LOAD(dllName, eDllLoadCallbackSide::UNSIDED, uniquestr, __STR(reliesOn), args)
+#define ON_DLL_LOAD_CLIENT(dllName, uniquestr, args) __ON_DLL_LOAD(dllName, eDllLoadCallbackSide::CLIENT, uniquestr, "", args)
+#define ON_DLL_LOAD_CLIENT_RELIESON(dllName, uniquestr, reliesOn, args) \
+ __ON_DLL_LOAD(dllName, eDllLoadCallbackSide::CLIENT, uniquestr, __STR(reliesOn), args)
+#define ON_DLL_LOAD_DEDI(dllName, uniquestr, args) __ON_DLL_LOAD(dllName, eDllLoadCallbackSide::DEDICATED_SERVER, uniquestr, "", args)
+#define ON_DLL_LOAD_DEDI_RELIESON(dllName, uniquestr, reliesOn, args) \
+ __ON_DLL_LOAD(dllName, eDllLoadCallbackSide::DEDICATED_SERVER, uniquestr, __STR(reliesOn), args)
+
+// new macro hook stuff
+class __autohook;
+
+class __fileAutohook
+{
+ public:
+ std::vector<__autohook*> hooks;
+
+ void Dispatch();
+ void DispatchForModule(const char* pModuleName);
+};
+
+// initialise autohooks for this file
+#define AUTOHOOK_INIT() \
+ namespace \
+ { \
+ __fileAutohook __FILEAUTOHOOK; \
+ }
+
+// dispatch all autohooks in this file
+#define AUTOHOOK_DISPATCH() __FILEAUTOHOOK.Dispatch();
+
+#define AUTOHOOK_DISPATCH_MODULE(moduleName) __FILEAUTOHOOK.DispatchForModule(__STR(moduleName));
+
+class __autohook
+{
+ public:
+ enum AddressResolutionMode
+ {
+ OFFSET_STRING, // we're using a string that of the format dllname.dll + offset
+ ABSOLUTE_ADDR, // we're using an absolute address, we don't need to process it at all
+ PROCADDRESS // resolve using GetModuleHandle and GetProcAddress
+ };
+
+ char* pFuncName;
+
+ LPVOID pHookFunc;
+ LPVOID* ppOrigFunc;
+
+ // address resolution props
+ AddressResolutionMode iAddressResolutionMode;
+ char* pAddrString = nullptr; // for OFFSET_STRING
+ LPVOID iAbsoluteAddress = nullptr; // for ABSOLUTE_ADDR
+ char* pModuleName; // for PROCADDRESS
+ char* pProcName; // for PROCADDRESS
+
+ public:
+ __autohook() = delete;
+
+ __autohook(__fileAutohook* autohook, const char* funcName, LPVOID absoluteAddress, LPVOID* orig, LPVOID func)
+ : pHookFunc(func), ppOrigFunc(orig), iAbsoluteAddress(absoluteAddress)
+ {
+ iAddressResolutionMode = ABSOLUTE_ADDR;
+
+ const int iFuncNameStrlen = strlen(funcName) + 1;
+ pFuncName = new char[iFuncNameStrlen];
+ memcpy(pFuncName, funcName, iFuncNameStrlen);
+
+ autohook->hooks.push_back(this);
+ }
+
+ __autohook(__fileAutohook* autohook, const char* funcName, const char* addrString, LPVOID* orig, LPVOID func)
+ : pHookFunc(func), ppOrigFunc(orig)
+ {
+ iAddressResolutionMode = OFFSET_STRING;
+
+ const int iFuncNameStrlen = strlen(funcName) + 1;
+ pFuncName = new char[iFuncNameStrlen];
+ memcpy(pFuncName, funcName, iFuncNameStrlen);
+
+ const int iAddrStrlen = strlen(addrString) + 1;
+ pAddrString = new char[iAddrStrlen];
+ memcpy(pAddrString, addrString, iAddrStrlen);
+
+ autohook->hooks.push_back(this);
+ }
+
+ __autohook(__fileAutohook* autohook, const char* funcName, const char* moduleName, const char* procName, LPVOID* orig, LPVOID func)
+ : pHookFunc(func), ppOrigFunc(orig)
+ {
+ iAddressResolutionMode = PROCADDRESS;
+
+ const int iFuncNameStrlen = strlen(funcName) + 1;
+ pFuncName = new char[iFuncNameStrlen];
+ memcpy(pFuncName, funcName, iFuncNameStrlen);
+
+ const int iModuleNameStrlen = strlen(moduleName) + 1;
+ pModuleName = new char[iModuleNameStrlen];
+ memcpy(pModuleName, moduleName, iModuleNameStrlen);
+
+ const int iProcNameStrlen = strlen(procName) + 1;
+ pProcName = new char[iProcNameStrlen];
+ memcpy(pProcName, procName, iProcNameStrlen);
+
+ autohook->hooks.push_back(this);
+ }
+
+ ~__autohook()
+ {
+ delete[] pFuncName;
+
+ if (pAddrString)
+ delete[] pAddrString;
+
+ if (pModuleName)
+ delete[] pModuleName;
+
+ if (pProcName)
+ delete[] pProcName;
+ }
+
+ void Dispatch()
+ {
+ LPVOID targetAddr = nullptr;
+
+ // determine the address of the function we're hooking
+ switch (iAddressResolutionMode)
+ {
+ case ABSOLUTE_ADDR:
+ {
+ targetAddr = iAbsoluteAddress;
+ break;
+ }
+
+ case OFFSET_STRING:
+ {
+ // 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)
+ break;
+
+ // 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);
+
+ targetAddr = (LPVOID)((uintptr_t)pModuleAddr + iOffset);
+ break;
+ }
+
+ case PROCADDRESS:
+ {
+ targetAddr = GetProcAddress(GetModuleHandleA(pModuleName), pProcName);
+ break;
+ }
+ }
+
+ if (MH_CreateHook(targetAddr, pHookFunc, ppOrigFunc) == MH_OK)
+ {
+ if (MH_EnableHook(targetAddr) == MH_OK)
+ spdlog::info("Enabling hook {}", pFuncName);
+ else
+ spdlog::error("MH_EnableHook failed for function {}", pFuncName);
+ }
+ else
+ spdlog::error("MH_CreateHook failed for function {}", pFuncName);
+ }
+};
+
+// hook a function at a given offset from a dll to be dispatched with AUTOHOOK_DISPATCH()
+#define AUTOHOOK(name, addrString, type, callingConvention, args) \
+ type callingConvention CONCAT2(__autohookfunc, name) args; \
+ namespace \
+ { \
+ type(*callingConvention name) args; \
+ __autohook CONCAT2(__autohook, __LINE__)( \
+ &__FILEAUTOHOOK, __STR(name), __STR(addrString), (LPVOID*)&name, (LPVOID)CONCAT2(__autohookfunc, name)); \
+ } \
+ type callingConvention CONCAT2(__autohookfunc, name) args
+
+// hook a function at a given absolute constant address to be dispatched with AUTOHOOK_DISPATCH()
+#define AUTOHOOK_ABSOLUTEADDR(name, addr, type, callingConvention, args) \
+ type callingConvention CONCAT2(__autohookfunc, name) args; \
+ namespace \
+ { \
+ type(*callingConvention name) args; \
+ __autohook \
+ CONCAT2(__autohook, __LINE__)(&__FILEAUTOHOOK, __STR(name), addr, (LPVOID*)&name, (LPVOID)CONCAT2(__autohookfunc, name)); \
+ } \
+ type callingConvention CONCAT2(__autohookfunc, name) args
+
+// hook a function at a given module and exported function to be dispatched with AUTOHOOK_DISPATCH()
+#define AUTOHOOK_PROCADDRESS(name, moduleName, procName, type, callingConvention, args) \
+ type callingConvention CONCAT2(__autohookfunc, name) args; \
+ namespace \
+ { \
+ type(*callingConvention name) args; \
+ __autohook CONCAT2(__autohook, __LINE__)( \
+ &__FILEAUTOHOOK, __STR(name), __STR(moduleName), __STR(procName), (LPVOID*)&name, (LPVOID)CONCAT2(__autohookfunc, name)); \
+ } \
+ type callingConvention CONCAT2(__autohookfunc, name) \
+ args
+
+class ManualHook
+{
+ public:
+ char* pFuncName;
+
+ LPVOID pHookFunc;
+ LPVOID* ppOrigFunc;
+
+ public:
+ ManualHook() = delete;
+ ManualHook(const char* funcName, LPVOID func);
+ ManualHook(const char* funcName, LPVOID* orig, LPVOID func);
+ bool Dispatch(LPVOID addr, LPVOID* orig = nullptr);
+};
+
+// hook a function to be dispatched manually later
+#define HOOK(varName, originalFunc, type, callingConvention, args) \
+ namespace \
+ { \
+ type(*callingConvention originalFunc) args; \
+ } \
+ type callingConvention CONCAT2(__manualhookfunc, varName) args; \
+ ManualHook varName = ManualHook(__STR(varName), (LPVOID*)&originalFunc, (LPVOID)CONCAT2(__manualhookfunc, varName)); \
+ type callingConvention CONCAT2(__manualhookfunc, varName) args
+
+#define HOOK_NOORIG(varName, type, callingConvention, args) \
+ type callingConvention CONCAT2(__manualhookfunc, varName) args; \
+ ManualHook varName = ManualHook(__STR(varName), (LPVOID)CONCAT2(__manualhookfunc, varName)); \
+ type callingConvention CONCAT2(__manualhookfunc, varName) \
+ args
+
+void MakeHook(LPVOID pTarget, LPVOID pDetour, void* ppOriginal, const char* pFuncName = "");
+#define MAKEHOOK(pTarget, pDetour, ppOriginal) MakeHook(pTarget, pDetour, ppOriginal, __STR(pDetour))