mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-23 13:55:36 +08:00
614 lines
15 KiB
C++
614 lines
15 KiB
C++
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#include "MinHook.h"
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extern WinMutex viewMutex;
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// - Unnamed helpers -
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namespace
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{ // unnamed
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#ifndef _WIN64
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BYTE common_hook[] = {
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0x9c, // pushfd
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0x60, // pushad
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0x9c, // pushfd ; Artikash 11/4/2018: not sure why pushfd happens twice. Anyway, after this a total of 0x28 bytes are pushed
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0x8d, 0x44, 0x24, 0x28, // lea eax,[esp+0x28]
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0x50, // push eax ; lpDatabase
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0xb9, 0, 0, 0, 0, // mov ecx,@this
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0xbb, 0, 0, 0, 0, // mov ebx,@TextHook::Send
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0xff, 0xd3, // call ebx
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0x9d, // popfd
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0x61, // popad
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0x9d, // popfd
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0x68, 0, 0, 0, 0, // push @original
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0xc3 // ret ; basically absolute jmp to @original
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};
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int this_offset = 9, send_offset = 14, original_offset = 24;
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#else
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BYTE common_hook[] = {
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0x9c, // push rflags
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0x50, // push rax
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0x53, // push rbx
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0x51, // push rcx
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0x52, // push rdx
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0x54, // push rsp
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0x55, // push rbp
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0x56, // push rsi
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0x57, // push rdi
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0x41, 0x50, // push r8
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0x41, 0x51, // push r9
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0x41, 0x52, // push r10
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0x41, 0x53, // push r11
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0x41, 0x54, // push r12
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0x41, 0x55, // push r13
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0x41, 0x56, // push r14
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0x41, 0x57, // push r15
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// https://docs.microsoft.com/en-us/cpp/build/x64-calling-convention
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// https://stackoverflow.com/questions/43358429/save-value-of-xmm-registers
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0x48, 0x83, 0xec, 0x20, // sub rsp,0x20
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0xf3, 0x0f, 0x7f, 0x24, 0x24, // movdqu [rsp],xmm4
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0xf3, 0x0f, 0x7f, 0x6c, 0x24, 0x10, // movdqu [rsp+0x10],xmm5
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0x48, 0x8d, 0x94, 0x24, 0xa8, 0x00, 0x00, 0x00, // lea rdx,[rsp+0xa8]
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0x48, 0xb9, 0, 0, 0, 0, 0, 0, 0, 0, // mov rcx,@this
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0x48, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, // mov rax,@TextHook::Send
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0x48, 0x89, 0xe3, // mov rbx,rsp
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0x48, 0x83, 0xe4, 0xf0, // and rsp,0xfffffffffffffff0 ; align stack
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0xff, 0xd0, // call rax
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0x48, 0x89, 0xdc, // mov rsp,rbx
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0xf3, 0x0f, 0x6f, 0x6c, 0x24, 0x10, // movdqu xmm5,XMMWORD PTR[rsp + 0x10]
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0xf3, 0x0f, 0x6f, 0x24, 0x24, // movdqu xmm4,XMMWORD PTR[rsp]
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0x48, 0x83, 0xc4, 0x20, // add rsp,0x20
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0x41, 0x5f, // pop r15
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0x41, 0x5e, // pop r14
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0x41, 0x5d, // pop r13
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0x41, 0x5c, // pop r12
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0x41, 0x5b, // pop r11
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0x41, 0x5a, // pop r10
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0x41, 0x59, // pop r9
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0x41, 0x58, // pop r8
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0x5f, // pop rdi
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0x5e, // pop rsi
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0x5d, // pop rbp
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0x5c, // pop rsp
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0x5a, // pop rdx
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0x59, // pop rcx
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0x5b, // pop rbx
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0x58, // pop rax
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0x9d, // pop rflags
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0xff, 0x25, 0x00, 0x00, 0x00, 0x00, // jmp qword ptr [rip]
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0, 0, 0, 0, 0, 0, 0, 0 // @original
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};
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int this_offset = 50, send_offset = 60, original_offset = 126;
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#endif
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// thread_local BYTE buffer[PIPE_BUFFER_SIZE];
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// thread_local will crush on windowsxp
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} // unnamed namespace
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// - TextHook methods -
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uintptr_t getasbaddr(const HookParam &hp)
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{
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auto address = hp.address;
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if (hp.type & MODULE_OFFSET)
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{
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if (hp.type & FUNCTION_OFFSET)
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{
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FARPROC function = NULL;
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try
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{
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auto ordinal = std::stoi(hp.function);
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function = GetProcAddress(GetModuleHandleW(hp.module), (LPCSTR)ordinal);
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}
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catch (...)
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{
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function = GetProcAddress(GetModuleHandleW(hp.module), hp.function);
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}
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if (function)
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address += (uint64_t)function;
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else
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return ConsoleOutput(FUNC_MISSING), 0;
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}
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else
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{
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if (HMODULE moduleBase = GetModuleHandleW(hp.module))
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address += (uint64_t)moduleBase;
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else
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return ConsoleOutput(MODULE_MISSING), 0;
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}
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}
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return address;
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}
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bool TextHook::Insert(HookParam hp)
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{
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auto addr = getasbaddr(hp);
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if (!addr)
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return false;
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RemoveHook(addr, 0);
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ConsoleOutput(INSERTING_HOOK, hp.name, addr);
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local_buffer = new BYTE[PIPE_BUFFER_SIZE];
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{
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std::scoped_lock lock(viewMutex);
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this->hp = hp;
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address = addr;
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}
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savetypeforremove = hp.type;
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if (hp.type & DIRECT_READ)
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return InsertReadCode();
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if (hp.type & BREAK_POINT)
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{
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if (InsertBreakPoint())
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return true;
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if (safeautoleaveveh)
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return InsertBreakPoint(); // 搜索特殊码后，不会释放，导致virtualprotect查询失败，重试。
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return false;
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}
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return InsertHookCode();
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}
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uintptr_t win64find0000(uintptr_t addr)
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{
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uintptr_t r = 0;
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__try
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{
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addr &= ~0xf;
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for (uintptr_t i = addr, j = addr - 0x10000; i > j; i -= 0x10)
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{
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DWORD k = *(DWORD *)(i - 4);
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if (k == 0x00000000)
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return i;
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}
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return 0;
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}
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__except (EXCEPTION_EXECUTE_HANDLER)
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{
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}
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return r;
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}
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Synchronized<std::unordered_map<uintptr_t, uintptr_t>> retaddr2relative; // 很奇怪，这个放到函数里用static在xp上会报错。
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uintptr_t queryrelativeret(HookParam &hp, uintptr_t retaddr)
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{
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// 不需要区分是相对于哪个module的偏移，只需要得到偏移就可以了，用来确保重启程序后ret值恒定
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auto &re = retaddr2relative.Acquire().contents;
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if (re.find(retaddr) != re.end())
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return re.at(retaddr);
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uintptr_t relative = retaddr;
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if (hp.jittype == JITTYPE::UNITY)
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{
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#ifndef _WIN64
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relative = retaddr - SafeFindEnclosingAlignedFunction(retaddr, 0x10000);
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#else
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relative = retaddr - win64find0000(retaddr);
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#endif
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}
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else
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{
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if (MEMORY_BASIC_INFORMATION info = {}; VirtualQuery((LPCVOID)retaddr, &info, sizeof(info)))
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relative -= (uintptr_t)info.AllocationBase;
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}
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re.insert(std::make_pair(retaddr, relative));
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return relative;
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}
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uintptr_t jitgetaddr(hook_stack *stack, HookParam *hp)
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{
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switch (hp->jittype)
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{
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#ifdef _WIN64
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case JITTYPE::RPCS3:
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return RPCS3::emu_arg(stack)[hp->argidx];
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case JITTYPE::VITA3K:
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return VITA3K::emu_arg(stack)[hp->argidx];
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case JITTYPE::YUZU:
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return YUZU::emu_arg(stack, hp->emu_addr)[hp->argidx];
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#endif
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case JITTYPE::PPSSPP:
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return PPSSPP::emu_arg(stack)[hp->argidx];
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default:
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return 0;
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}
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}
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bool checklengthembedable(const HookParam &hp, size_t size)
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{
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size_t len;
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if (hp.type & CODEC_UTF16)
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len = 2;
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else if (hp.type & CODEC_UTF32)
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len = 4;
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else
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{
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len = 2;
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}
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return size > len;
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}
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bool commonfilter(void *data, size_t *len, HookParam *hp)
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{
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if (hp->type & CODEC_UTF16)
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;
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else if (hp->type & CODEC_UTF32)
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;
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else if (hp->type & CODEC_UTF8)
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;
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else
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{
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if (*len == 2)
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{
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StringFilter((char *)data, len, "\x81\xa4", 2);
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StringFilter((char *)data, len, "\x81\xa5", 2);
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}
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}
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return true;
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}
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void TextHook::Send(uintptr_t lpDataBase)
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{
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auto buffer = (TextOutput_T *)local_buffer;
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auto pbData = buffer->data;
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_InterlockedIncrement((long *)&useCount);
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__try
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{
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auto stack = get_hook_stack(lpDataBase);
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if (auto current_trigger_fun = trigger_fun.exchange(nullptr))
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if (!current_trigger_fun(location, stack))
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trigger_fun = current_trigger_fun;
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if (hp.type & HOOK_RETURN)
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{
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hp.type &= ~HOOK_RETURN;
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hp.address = stack->retaddr;
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strcat(hp.name, "_Return");
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// 清除jit hook特征，防止手动插入
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strcpy(hp.unityfunctioninfo, "");
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hp.emu_addr = 0;
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// 清除module
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hp.type &= ~MODULE_OFFSET;
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hp.type &= ~FUNCTION_OFFSET;
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strcpy(hp.function, "");
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wcscpy(hp.module, L"");
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NewHook(hp, hp.name);
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hp.type |= HOOK_EMPTY;
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__leave;
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}
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if (hp.type & HOOK_EMPTY)
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__leave; // jichi 10/24/2014: dummy hook only for dynamic hook
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size_t lpCount = 0;
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uintptr_t lpSplit = 0,
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lpRetn = stack->retaddr,
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plpdatain = (lpDataBase + hp.offset),
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lpDataIn = *(uintptr_t *)plpdatain;
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bool isstring = false;
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if (hp.jittype != JITTYPE::PC && hp.jittype != JITTYPE::UNITY)
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{
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lpDataIn = jitgetaddr(stack, &hp);
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plpdatain = (uintptr_t)&lpDataIn;
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}
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else if (hp.jittype == JITTYPE::UNITY)
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{
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plpdatain = (uintptr_t)argidx(stack, hp.argidx);
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lpDataIn = *(uintptr_t *)plpdatain;
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}
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auto use_custom_embed_fun = (hp.type & EMBED_ABLE) && !(hp.type & EMBED_BEFORE_SIMPLE);
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if (use_custom_embed_fun)
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{
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isstring = true;
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lpSplit = Engine::ScenarioRole;
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lpRetn = 0;
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if (hp.hook_before(stack, pbData, &lpCount, &lpSplit) == false)
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__leave;
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}
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else if (hp.text_fun)
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{
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isstring = true;
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hp.text_fun(stack, &hp, &lpDataIn, &lpSplit, &lpCount);
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}
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else if (hp.type & SPECIAL_JIT_STRING)
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{
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if (hp.jittype == JITTYPE::UNITY)
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commonsolvemonostring(lpDataIn, &lpDataIn, &lpCount);
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}
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else
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{
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if (hp.type & FIXING_SPLIT)
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lpSplit = FIXED_SPLIT_VALUE; // fuse all threads, and prevent floating
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else if (hp.type & USING_SPLIT)
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{
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lpSplit = *(uintptr_t *)(lpDataBase + hp.split);
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if (hp.type & SPLIT_INDIRECT)
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lpSplit = *(uintptr_t *)(lpSplit + hp.split_index);
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}
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if (hp.type & DATA_INDIRECT)
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{
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plpdatain = (lpDataIn + hp.index);
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lpDataIn = *(uintptr_t *)plpdatain;
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}
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lpDataIn += hp.padding;
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lpCount = GetLength(stack, lpDataIn);
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}
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if (lpCount <= 0)
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__leave;
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if (lpCount > TEXT_BUFFER_SIZE)
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{
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ConsoleOutput(InvalidLength, lpCount, hp.name);
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lpCount = TEXT_BUFFER_SIZE;
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}
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if (!use_custom_embed_fun)
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{
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if ((!(hp.type & USING_CHAR)) && (isstring || (hp.type & USING_STRING)))
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{
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if (lpDataIn == 0)
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__leave;
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::memcpy(pbData, (void *)lpDataIn, lpCount);
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}
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else
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{
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if (hp.type & CODEC_UTF32)
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{
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*(uint32_t *)pbData = lpDataIn & 0xffffffff;
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}
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else
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{ // CHAR_LITTEL_ENDIAN,CODEC_ANSI_BE,CODEC_UTF16
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lpDataIn &= 0xffff;
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if ((hp.type & CODEC_ANSI_BE) && (lpDataIn >> 8))
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lpDataIn = _byteswap_ushort(lpDataIn & 0xffff);
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if (lpCount == 1)
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lpDataIn &= 0xff;
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*(WORD *)pbData = lpDataIn & 0xffff;
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}
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}
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}
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if (!commonfilter(pbData, &lpCount, &hp) || lpCount <= 0)
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__leave;
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if (hp.filter_fun && !hp.filter_fun(pbData, &lpCount, &hp) || lpCount <= 0)
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__leave;
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if (hp.type & (NO_CONTEXT | FIXING_SPLIT))
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lpRetn = 0;
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buffer->type = hp.type;
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lpRetn = queryrelativeret(hp, lpRetn);
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ThreadParam tp{GetCurrentProcessId(), address, lpRetn, lpSplit};
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parsenewlineseperator(pbData, &lpCount);
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bool canembed;
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if (hp.type & EMBED_ABLE)
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{
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if (!checklengthembedable(hp, lpCount))
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{
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buffer->type &= (~EMBED_ABLE);
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canembed = false;
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}
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else if (checktranslatedok(pbData, lpCount))
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{
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buffer->type &= (~EMBED_ABLE);
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canembed = true;
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}
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else
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{
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canembed = true;
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}
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}
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TextOutput(tp, hp, buffer, lpCount);
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if (canembed && (check_embed_able(tp)))
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{
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auto lpCountsave = lpCount;
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if (waitfornotify(buffer, pbData, &lpCount, tp))
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{
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if (hp.type & EMBED_AFTER_NEW)
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{
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auto _ = new char[max(lpCountsave, lpCount) + 10];
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memcpy(_, pbData, lpCount);
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for (int i = lpCount; i < max(lpCountsave, lpCount) + 10; i++)
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_[i] = 0;
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*(uintptr_t *)plpdatain = (uintptr_t)_;
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}
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else if (hp.type & EMBED_AFTER_OVERWRITE)
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{
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memcpy((void *)lpDataIn, pbData, lpCount);
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for (int i = lpCount; i < lpCountsave; i++)
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((BYTE *)(lpDataIn))[i] = 0;
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}
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else if (hp.hook_after)
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hp.hook_after(stack, pbData, lpCount);
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else if (hp.type & SPECIAL_JIT_STRING)
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{
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if (hp.jittype == JITTYPE::UNITY)
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unity_ui_string_hook_after(argidx(stack, hp.argidx), pbData, lpCount);
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}
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}
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}
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}
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__except (EXCEPTION_EXECUTE_HANDLER)
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{
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if (!err && !(hp.type & KNOWN_UNSTABLE))
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{
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err = true;
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ConsoleOutput(SEND_ERROR, hp.name);
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}
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}
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_InterlockedDecrement((long *)&useCount);
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}
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bool TextHook::breakpointcontext(PCONTEXT context)
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{
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auto stack = std::make_unique<hook_stack>();
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context_get(stack.get(), context);
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auto lpDataBase = stack->get_base();
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Send(lpDataBase);
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context_set(stack.get(), context);
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return true;
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}
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bool TextHook::InsertBreakPoint()
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{
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// MH_CreateHook 64位unity/yuzu-emu经常 MH_ERROR_MEMORY_ALLOC
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return add_veh_hook(location, std::bind(&TextHook::breakpointcontext, this, std::placeholders::_1));
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}
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bool TextHook::RemoveBreakPoint()
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{
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return remove_veh_hook(location);
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}
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bool TextHook::InsertHookCode()
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{
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VirtualProtect(location, 10, PAGE_EXECUTE_READWRITE, DUMMY);
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void *original;
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MH_STATUS error;
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while ((error = MH_CreateHook(location, trampoline, &original)) != MH_OK)
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if (error == MH_ERROR_ALREADY_CREATED)
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RemoveHook(address);
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else
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return ConsoleOutput(MH_StatusToString(error)), false;
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*(TextHook **)(common_hook + this_offset) = this;
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*(void(TextHook::**)(uintptr_t))(common_hook + send_offset) = &TextHook::Send;
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*(void **)(common_hook + original_offset) = original;
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memcpy(trampoline, common_hook, sizeof(common_hook));
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return MH_EnableHook(location) == MH_OK;
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}
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void TextHook::Read()
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{
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size_t dataLen = 1;
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// 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
|
||
{
|
||
if (hp.text_fun)
|
||
{
|
||
while (WaitForSingleObject(readerEvent, 500) == WAIT_TIMEOUT)
|
||
hp.text_fun(0, 0, 0, 0, 0);
|
||
}
|
||
else
|
||
{
|
||
while (WaitForSingleObject(readerEvent, 500) == WAIT_TIMEOUT)
|
||
{
|
||
if (!location)
|
||
continue;
|
||
int currentLen = HookStrlen((BYTE *)location);
|
||
bool changed = memcmp(pbData, location, dataLen) != 0;
|
||
if (changed || (currentLen != dataLen))
|
||
{
|
||
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}, hp, buffer, dataLen);
|
||
dataLen = min(currentLen, TEXT_BUFFER_SIZE);
|
||
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 (savetypeforremove & DIRECT_READ)
|
||
RemoveReadCode();
|
||
else if (savetypeforremove & BREAK_POINT)
|
||
RemoveBreakPoint();
|
||
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)
|
||
{
|
||
return HookStrLen(&hp, data);
|
||
}
|
||
|
||
// EOF
|