LunaHook-mirror/LunaHook/engines/v8/hello.cc
2024-08-12 21:00:40 +08:00

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/*
// v8这样做比用剪贴板好但。。。太难了而且版本兼容性不太好
typedef void *(*FunctionTemplateNew_t)(void *, void *, void *, void *, void *, int, int, int);
typedef void *(*FunctionTemplateGetFunction_t)(void *, void *, void *);
typedef void *(*FunctionSetName_t)(void *, void *);
typedef void *(*Global_t)(void *, void *);
typedef void *(*SetObject_t)(void *, void *, void *, void *, void *);
Global_t Global;
SetObject_t SetObject;
FunctionTemplateNew_t FunctionTemplateNew;
FunctionTemplateGetFunction_t FunctionTemplateGetFunction;
FunctionSetName_t FunctionSetName;
#define fnFunctionTemplateNew "?New@FunctionTemplate@v8@@SA?AV?$Local@VFunctionTemplate@v8@@@2@PAVIsolate@2@P6AXABV?$FunctionCallbackInfo@VValue@v8@@@2@@ZV?$Local@VValue@v8@@@2@V?$Local@VSignature@v8@@@2@HW4ConstructorBehavior@2@@Z"
#define fnFunctionTemplateGetFunction "?GetFunction@FunctionTemplate@v8@@QAE?AV?$MaybeLocal@VFunction@v8@@@2@V?$Local@VContext@v8@@@2@@Z"
#define fnFunctionSetName "?SetName@Function@v8@@QAEXV?$Local@VString@v8@@@2@@Z"
#define fnGlobal "?Global@Context@v8@@QAE?AV?$Local@VObject@v8@@@2@XZ"
#define fnSetObject "?Set@Object@v8@@QAE?AV?$Maybe@_N@2@V?$Local@VContext@v8@@@2@V?$Local@VValue@v8@@@2@1@Z"
void tryinsertglobalfunction(void *isolate)
{
SetObject = (SetObject_t)GetProcAddress(hmodule, fnSetObject);
Global = (Global_t)GetProcAddress(hmodule, fnGlobal);
FunctionTemplateNew = (FunctionTemplateNew_t)GetProcAddress(hmodule, fnFunctionTemplateNew);
FunctionTemplateGetFunction = (FunctionTemplateGetFunction_t)GetProcAddress(hmodule, fnFunctionTemplateGetFunction);
FunctionSetName = (FunctionSetName_t)GetProcAddress(hmodule, fnFunctionSetName);
void *context;
void *v8string;
void *script;
void *useless;
void *FunctionTemplate;
void *unknown;
void *v12[7];
ConsoleOutput("%p %p %p %p %p", SetObject, Global, FunctionTemplateNew, FunctionTemplateGetFunction, FunctionSetName);
GetCurrentContext(isolate, &context);
ConsoleOutput("context %p", context);
auto f = FunctionTemplateNew(&FunctionTemplate, context, Method, v12[0], 0, 0, 1, 0);
ConsoleOutput("FunctionTemplate %p %p", *(void **)f, unknown);
void *Function = FunctionTemplateGetFunction(FunctionTemplate, &unknown, context);
auto string = NewFromUtf8(&v8string, isolate, "hello", 1, -1);
ConsoleOutput("%p %p", *(void **)string, v8string);
FunctionSetName(*(void **)Function, *(void **)string);
auto global = Global(context, &unknown);
SetObject(*(void **)global, &unknown, context, *(void **)string, *(void **)Function);
}
*/
#include <node.h>
using namespace v8;
void NODE_SET_METHOD_X(const char *name,
v8::FunctionCallback callback)
{
v8::Isolate *isolate = v8::Isolate::GetCurrent();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(isolate,
callback);
v8::Local<v8::Function> fn = t->GetFunction(context).ToLocalChecked();
v8::Local<v8::String> fn_name = v8::String::NewFromUtf8(isolate, name,
v8::NewStringType::kInternalized)
.ToLocalChecked();
fn->SetName(fn_name);
context->Global()->Set(context, fn_name, fn).Check();
}
extern "C" __declspec(dllexport) void utf8interaction(char *utf8)
{
// 用来和lunahook交互
utf8[0] += 10;
}
void Method(const FunctionCallbackInfo<Value> &args)
{
Isolate *isolate = Isolate::GetCurrent();
HandleScope scope(isolate);
auto locals = args[0]->ToString(isolate->GetCurrentContext()).ToLocalChecked();
auto size = locals->Utf8Length(isolate);
auto buff = std::make_unique<char[]>(size + 1);
locals->WriteUtf8(isolate, buff.get());
utf8interaction(buff.get());
args.GetReturnValue().Set(String::NewFromUtf8(isolate, buff.get()).ToLocalChecked());
}
extern "C" __declspec(dllexport) void globalfunction()
{
NODE_SET_METHOD_X("hello", Method);
}