mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-27 15:54:03 +08:00
385 lines
10 KiB
C++
385 lines
10 KiB
C++
// texthook.cc
|
|
// 8/24/2013 jichi
|
|
// Branch: LUNA_HOOK_DLL/texthook.cpp, rev 128
|
|
// 8/24/2013 TODO: Clean up this file
|
|
#include"embed_util.h"
|
|
#include "texthook.h"
|
|
#include "main.h"
|
|
#include "ithsys/ithsys.h"
|
|
#include "MinHook.h"
|
|
#include"Lang/Lang.h"
|
|
extern WinMutex viewMutex;
|
|
|
|
// - Unnamed helpers -
|
|
|
|
namespace { // unnamed
|
|
#ifndef _WIN64
|
|
BYTE common_hook[] = {
|
|
0x9c, // pushfd
|
|
0x60, // pushad
|
|
0x9c, // pushfd ; Artikash 11/4/2018: not sure why pushfd happens twice. Anyway, after this a total of 0x28 bytes are pushed
|
|
0x8d, 0x44, 0x24, 0x28, // lea eax,[esp+0x28]
|
|
0x50, // push eax ; lpDatabase
|
|
0xb9, 0,0,0,0, // mov ecx,@this
|
|
0xbb, 0,0,0,0, // mov ebx,@TextHook::Send
|
|
0xff, 0xd3, // call ebx
|
|
0x9d, // popfd
|
|
0x61, // popad
|
|
0x9d, // popfd
|
|
0x68, 0,0,0,0, // push @original
|
|
0xc3 // ret ; basically absolute jmp to @original
|
|
};
|
|
int this_offset = 9, send_offset = 14, original_offset = 24;
|
|
#else
|
|
BYTE common_hook[] = {
|
|
0x9c, // push rflags
|
|
0x50, // push rax
|
|
0x53, // push rbx
|
|
0x51, // push rcx
|
|
0x52, // push rdx
|
|
0x54, // push rsp
|
|
0x55, // push rbp
|
|
0x56, // push rsi
|
|
0x57, // push rdi
|
|
0x41, 0x50, // push r8
|
|
0x41, 0x51, // push r9
|
|
0x41, 0x52, // push r10
|
|
0x41, 0x53, // push r11
|
|
0x41, 0x54, // push r12
|
|
0x41, 0x55, // push r13
|
|
0x41, 0x56, // push r14
|
|
0x41, 0x57, // push r15
|
|
// https://docs.microsoft.com/en-us/cpp/build/x64-calling-convention
|
|
// https://stackoverflow.com/questions/43358429/save-value-of-xmm-registers
|
|
0x48, 0x83, 0xec, 0x20, // sub rsp,0x20
|
|
0xf3, 0x0f, 0x7f, 0x24, 0x24, // movdqu [rsp],xmm4
|
|
0xf3, 0x0f, 0x7f, 0x6c, 0x24, 0x10, // movdqu [rsp+0x10],xmm5
|
|
0x48, 0x8d, 0x94, 0x24, 0xa8, 0x00, 0x00, 0x00, // lea rdx,[rsp+0xa8]
|
|
0x48, 0xb9, 0,0,0,0,0,0,0,0, // mov rcx,@this
|
|
0x48, 0xb8, 0,0,0,0,0,0,0,0, // mov rax,@TextHook::Send
|
|
0x48, 0x89, 0xe3, // mov rbx,rsp
|
|
0x48, 0x83, 0xe4, 0xf0, // and rsp,0xfffffffffffffff0 ; align stack
|
|
0xff, 0xd0, // call rax
|
|
0x48, 0x89, 0xdc, // mov rsp,rbx
|
|
0xf3, 0x0f, 0x6f, 0x6c, 0x24, 0x10, // movdqu xmm5,XMMWORD PTR[rsp + 0x10]
|
|
0xf3, 0x0f, 0x6f, 0x24, 0x24, // movdqu xmm4,XMMWORD PTR[rsp]
|
|
0x48, 0x83, 0xc4, 0x20, // add rsp,0x20
|
|
0x41, 0x5f, // pop r15
|
|
0x41, 0x5e, // pop r14
|
|
0x41, 0x5d, // pop r13
|
|
0x41, 0x5c, // pop r12
|
|
0x41, 0x5b, // pop r11
|
|
0x41, 0x5a, // pop r10
|
|
0x41, 0x59, // pop r9
|
|
0x41, 0x58, // pop r8
|
|
0x5f, // pop rdi
|
|
0x5e, // pop rsi
|
|
0x5d, // pop rbp
|
|
0x5c, // pop rsp
|
|
0x5a, // pop rdx
|
|
0x59, // pop rcx
|
|
0x5b, // pop rbx
|
|
0x58, // pop rax
|
|
0x9d, // pop rflags
|
|
0xff, 0x25, 0x00, 0x00, 0x00, 0x00, // jmp qword ptr [rip]
|
|
0,0,0,0,0,0,0,0 // @original
|
|
};
|
|
int this_offset = 50, send_offset = 60, original_offset = 126;
|
|
#endif
|
|
|
|
//thread_local BYTE buffer[PIPE_BUFFER_SIZE];
|
|
//thread_local will crush on windowsxp
|
|
enum { TEXT_BUFFER_SIZE = PIPE_BUFFER_SIZE - sizeof(TextOutput_T) };
|
|
} // unnamed namespace
|
|
|
|
// - TextHook methods -
|
|
|
|
bool TextHook::Insert(HookParam hp)
|
|
{
|
|
local_buffer=new BYTE[PIPE_BUFFER_SIZE];
|
|
{
|
|
std::scoped_lock lock(viewMutex);
|
|
this->hp = hp;
|
|
address = hp.address;
|
|
}
|
|
if (hp.type & DIRECT_READ) return InsertReadCode();
|
|
return InsertHookCode();
|
|
}
|
|
|
|
void TextHook::Send(uintptr_t lpDataBase)
|
|
{
|
|
auto buffer =(TextOutput_T*) local_buffer;
|
|
auto pbData = buffer->data;
|
|
_InterlockedIncrement((long*)&useCount);
|
|
__try
|
|
{
|
|
auto stack=(hook_stack*)(lpDataBase-sizeof(hook_stack)+sizeof(uintptr_t));
|
|
|
|
#ifndef _WIN64
|
|
if (auto current_trigger_fun = trigger_fun.exchange(nullptr))
|
|
if (!current_trigger_fun(location, stack->ebp, stack->esp)) trigger_fun = current_trigger_fun;
|
|
#endif
|
|
|
|
if (hp.type & HOOK_EMPTY) __leave; // jichi 10/24/2014: dummy hook only for dynamic hook
|
|
|
|
size_t lpCount = 0;
|
|
uintptr_t lpSplit = 0,
|
|
lpRetn = stack->retaddr,
|
|
plpdatain=(lpDataBase + hp.offset),
|
|
lpDataIn=*(uintptr_t*)plpdatain;
|
|
bool isstring=false;
|
|
|
|
auto use_custom_embed_fun=(hp.type&EMBED_ABLE)&&!(hp.type&EMBED_BEFORE_SIMPLE);
|
|
if(use_custom_embed_fun)
|
|
{
|
|
isstring=true;
|
|
lpSplit=Engine::ScenarioRole;lpRetn=0;
|
|
if(hp.hook_before(stack,pbData,&lpCount,&lpSplit)==false)__leave;
|
|
}
|
|
else if (hp.text_fun)
|
|
{
|
|
isstring=true;
|
|
hp.text_fun(stack, &hp, &lpDataIn, &lpSplit, &lpCount);
|
|
}
|
|
else
|
|
{
|
|
if (hp.type & FIXING_SPLIT) lpSplit = FIXED_SPLIT_VALUE; // fuse all threads, and prevent floating
|
|
else if (hp.type & USING_SPLIT) {
|
|
lpSplit = *(uintptr_t *)(lpDataBase + hp.split);
|
|
if (hp.type & SPLIT_INDIRECT) lpSplit = *(uintptr_t *)(lpSplit + hp.split_index);
|
|
}
|
|
if (hp.type & DATA_INDIRECT) {
|
|
plpdatain=(lpDataIn + hp.index);
|
|
lpDataIn = *(uintptr_t *)plpdatain;
|
|
}
|
|
lpDataIn += hp.padding;
|
|
lpCount = GetLength(stack, lpDataIn);
|
|
}
|
|
|
|
|
|
if (lpCount <= 0) __leave;
|
|
if (lpCount > TEXT_BUFFER_SIZE)
|
|
{
|
|
ConsoleOutput(InvalidLength, lpCount, hp.name);
|
|
lpCount = TEXT_BUFFER_SIZE;
|
|
}
|
|
|
|
if(!use_custom_embed_fun)
|
|
{
|
|
if ((!(hp.type&USING_CHAR))&&(isstring||(hp.type&USING_STRING)))
|
|
{
|
|
if(lpDataIn == 0)__leave;
|
|
::memcpy(pbData, (void*)lpDataIn, lpCount);
|
|
}
|
|
else
|
|
{
|
|
if(hp.type &CODEC_UTF32)
|
|
{
|
|
*(uint32_t*)pbData=lpDataIn&0xffffffff;
|
|
}
|
|
else
|
|
{//CHAR_LITTEL_ENDIAN,CODEC_ANSI_BE,CODEC_UTF16
|
|
lpDataIn &= 0xffff;
|
|
if ((hp.type & CODEC_ANSI_BE) && (lpDataIn >> 8)) lpDataIn = _byteswap_ushort(lpDataIn & 0xffff);
|
|
if (lpCount == 1) lpDataIn &= 0xff;
|
|
*(WORD*)pbData = lpDataIn & 0xffff;
|
|
}
|
|
}
|
|
}
|
|
if (hp.filter_fun && !hp.filter_fun(pbData, &lpCount, &hp) || lpCount <= 0) __leave;
|
|
|
|
if (hp.type & (NO_CONTEXT | FIXING_SPLIT)) lpRetn = 0;
|
|
|
|
buffer->type=hp.type;
|
|
|
|
ThreadParam tp{ GetCurrentProcessId(), address, lpRetn, lpSplit };
|
|
|
|
parsenewlineseperator(pbData, &lpCount);
|
|
|
|
if((hp.type&EMBED_ABLE)&&(checktranslatedok(pbData,lpCount)))
|
|
buffer->type=buffer->type&(~EMBED_ABLE);
|
|
|
|
TextOutput(tp, buffer, lpCount);
|
|
|
|
if((hp.type&EMBED_ABLE)&&(check_embed_able(tp)))
|
|
{
|
|
auto lpCountsave=lpCount;
|
|
if(waitfornotify(buffer,pbData,&lpCount,tp))
|
|
{
|
|
if(hp.type&EMBED_AFTER_NEW)
|
|
{
|
|
auto _ = new char[max(lpCountsave,lpCount)+10];
|
|
memcpy(_,pbData,lpCount);
|
|
for(int i=lpCount;i<max(lpCountsave,lpCount)+10;i++)
|
|
_[i]=0;
|
|
*(uintptr_t*)plpdatain=(uintptr_t)_;
|
|
}
|
|
else if(hp.type&EMBED_AFTER_OVERWRITE)
|
|
{
|
|
memcpy((void*)lpDataIn,pbData,lpCount);
|
|
for(int i=lpCount;i<lpCountsave;i++)
|
|
((BYTE*)(lpDataIn))[i]=0;
|
|
}
|
|
else
|
|
hp.hook_after(stack,pbData,lpCount);
|
|
}
|
|
}
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
if (!err && !(hp.type & KNOWN_UNSTABLE))
|
|
{
|
|
err = true;
|
|
ConsoleOutput(SEND_ERROR, hp.name);
|
|
}
|
|
}
|
|
|
|
_InterlockedDecrement((long*) & useCount);
|
|
}
|
|
|
|
bool TextHook::InsertHookCode()
|
|
{
|
|
// jichi 9/17/2013: might raise 0xC0000005 AccessViolationException on win7
|
|
// Artikash 10/30/2018: No, I think that's impossible now that I moved to minhook
|
|
if (hp.type & MODULE_OFFSET) // Map hook offset to real address
|
|
if (hp.type & FUNCTION_OFFSET)
|
|
if (FARPROC function = GetProcAddress(GetModuleHandleW(hp.module), hp.function)) address += (uint64_t)function;
|
|
else return ConsoleOutput(FUNC_MISSING), false;
|
|
else if (HMODULE moduleBase = GetModuleHandleW(hp.module)) address += (uint64_t)moduleBase;
|
|
else return ConsoleOutput(MODULE_MISSING), false;
|
|
|
|
VirtualProtect(location, 10, PAGE_EXECUTE_READWRITE, DUMMY);
|
|
void* original;
|
|
MH_STATUS error;
|
|
while ((error = MH_CreateHook(location, trampoline, &original)) != MH_OK)
|
|
if (error == MH_ERROR_ALREADY_CREATED) RemoveHook(address);
|
|
else return ConsoleOutput(MH_StatusToString(error)), false;
|
|
|
|
*(TextHook**)(common_hook + this_offset) = this;
|
|
*(void(TextHook::**)(uintptr_t))(common_hook + send_offset) = &TextHook::Send;
|
|
*(void**)(common_hook + original_offset) = original;
|
|
memcpy(trampoline, common_hook, sizeof(common_hook));
|
|
return MH_EnableHook(location) == MH_OK;
|
|
}
|
|
|
|
void TextHook::Read()
|
|
{
|
|
size_t dataLen = 1;
|
|
//BYTE(*buffer)[PIPE_BUFFER_SIZE] = &::buffer, *pbData = *buffer + sizeof(ThreadParam);
|
|
|
|
auto buffer =(TextOutput_T*) local_buffer;
|
|
auto pbData = buffer->data;
|
|
buffer->type=hp.type;
|
|
__try
|
|
{
|
|
while (WaitForSingleObject(readerEvent, 500) == WAIT_TIMEOUT) if (location&&(memcmp(pbData, location, dataLen) != 0)) if (int currentLen = HookStrlen((BYTE*)location))
|
|
{
|
|
dataLen = min(currentLen, TEXT_BUFFER_SIZE);
|
|
memcpy(pbData, location, dataLen);
|
|
if (hp.filter_fun && !hp.filter_fun(pbData, &dataLen, &hp) || dataLen <= 0) continue;
|
|
TextOutput({ GetCurrentProcessId(), address, 0, 0 }, buffer, dataLen);
|
|
memcpy(pbData, location, dataLen);
|
|
}
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ConsoleOutput(READ_ERROR, hp.name);
|
|
Clear();
|
|
}
|
|
}
|
|
|
|
bool TextHook::InsertReadCode()
|
|
{
|
|
readerThread = CreateThread(nullptr, 0, [](void* This) { ((TextHook*)This)->Read(); return 0UL; }, this, 0, nullptr);
|
|
readerEvent = CreateEventW(nullptr, FALSE, FALSE, NULL);
|
|
return true;
|
|
}
|
|
|
|
void TextHook::RemoveHookCode()
|
|
{
|
|
MH_DisableHook(location);
|
|
while (useCount != 0);
|
|
MH_RemoveHook(location);
|
|
}
|
|
|
|
void TextHook::RemoveReadCode()
|
|
{
|
|
SetEvent(readerEvent);
|
|
if (GetThreadId(readerThread) != GetCurrentThreadId()) WaitForSingleObject(readerThread, 1000);
|
|
CloseHandle(readerEvent);
|
|
CloseHandle(readerThread);
|
|
}
|
|
|
|
void TextHook::Clear()
|
|
{
|
|
if (address == 0) return;
|
|
if (hp.type & DIRECT_READ) RemoveReadCode();
|
|
else RemoveHookCode();
|
|
NotifyHookRemove(address, hp.name);
|
|
std::scoped_lock lock(viewMutex);
|
|
memset(&hp, 0, sizeof(HookParam));
|
|
address = 0;
|
|
if(local_buffer)delete []local_buffer;
|
|
}
|
|
|
|
int TextHook::GetLength(hook_stack* stack, uintptr_t in)
|
|
{
|
|
int len;
|
|
if(hp.type&USING_STRING)
|
|
{
|
|
if(hp.length_offset)
|
|
{
|
|
len = *((uintptr_t*)stack->base + hp.length_offset);
|
|
if (len >= 0)
|
|
{
|
|
if (hp.type & CODEC_UTF16)
|
|
len <<= 1;
|
|
else if(hp.type & CODEC_UTF32)
|
|
len <<= 2;
|
|
|
|
}
|
|
else if (len != -1)
|
|
{
|
|
|
|
}
|
|
else
|
|
{//len==-1
|
|
len = HookStrlen((BYTE*)in);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
len = HookStrlen((BYTE*)in);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (hp.type & CODEC_UTF16)
|
|
len = 2;
|
|
else if(hp.type&CODEC_UTF32)
|
|
len = 4;
|
|
else
|
|
{ //CODEC_ANSI_BE,CHAR_LITTLE_ENDIAN
|
|
if (hp.type & CODEC_ANSI_BE)
|
|
in >>= 8;
|
|
len = !!IsDBCSLeadByteEx(hp.codepage, in & 0xff) + 1;
|
|
}
|
|
}
|
|
return max(0, len);
|
|
}
|
|
|
|
int TextHook::HookStrlen(BYTE* data)
|
|
{
|
|
if(data==0)return 0;
|
|
|
|
if(hp.type&CODEC_UTF16)
|
|
return wcslen((wchar_t*)data)*2;
|
|
else if(hp.type&CODEC_UTF32)
|
|
return u32strlen((uint32_t*)data)*4;
|
|
else
|
|
return strlen((char*)data);
|
|
|
|
}
|
|
|
|
// EOF
|