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il2cpp_support.c
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134 lines (101 loc) · 3.12 KB
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#include "il2cpp_support.h"
#ifdef _WIN32
#include <Windows.h>
#endif
#define log_error(cat, msg, ...)
#if !defined(_WIN32)
void init_il2cpp()
{
}
#else
#define DO_API(r, n, p) _##n n
#include "il2cpp-api-functions.h"
#undef DO_API
void init_il2cpp()
{
bool symbols_missing = FALSE;
void* libHandle = LoadLibraryA("GameAssembly.dll");
#define DO_API(r, n, p) \
n = (_##n)GetProcAddress(libHandle, #n); \
if (n == NULL) \
{ \
symbols_missing = TRUE; \
}
#include "il2cpp-api-functions.h"
#undef DO_API
if (symbols_missing)
{
log_error(LOG_DEFAULT, "Failed to load il2cpp");
}
//il2cpp_resolve_icall = (_il2cpp_resolve_icall)GetProcAddress(libHandle, "il2cpp_resolve_icall");
//void* icall = il2cpp_resolve_icall("UnityEngine.GameObject::CreatePrimitive");
}
#endif
Il2CppImage* il2cpp_get_image(const char* assembly)
{
Il2CppAssembly* mono_assembly = il2cpp_domain_assembly_open(il2cpp_domain_get(), assembly);
//MonoAssemblyName* asm_name = mono_assembly_name_new(assembly);
//MonoAssembly* mono_assembly = mono_assembly_loaded(asm_name);
//mono_assembly_name_free(asm_name);
return il2cpp_assembly_get_image(mono_assembly);
}
Il2CppClass* il2cpp_get_class(Il2CppImage* image, const char* _namespace, const char* name)
{
return il2cpp_class_from_name(image, _namespace, name);
}
Il2CppClass* il2cpp_search_class(const char* assembly, const char* _namespace,const char* name)
{
Il2CppImage* image = il2cpp_get_image(assembly);
Il2CppClass* klass = il2cpp_get_class(image, _namespace, name);
return klass;
}
char*
il2cpp_array_addr_with_size(Il2CppArray *array, int32_t size, uintptr_t idx)
{
const size_t kIl2CppSizeOfArray = 3 * sizeof(void*) + sizeof(uintptr_t);
return ((char*)array) + kIl2CppSizeOfArray + size * idx;
}
typedef struct MethodHead
{
Il2CppMethodPointer methodPtr;
}MethodHead;
Il2CppMethodPointer hook_method(const char* assembly, const char* _namespace, const char* name,const char* method,int32_t param_count, Il2CppMethodPointer hook)
{
Il2CppClass* klass = il2cpp_search_class(assembly, _namespace, name);
return hook_method2(klass, method, param_count, hook);
}
Il2CppMethodPointer hook_method2(Il2CppClass* klass, const char* method, int32_t param_count, Il2CppMethodPointer hook)
{
MethodInfo* info = il2cpp_class_get_method_from_name(klass, method, param_count);//
if (info == NULL)
return NULL;
MethodHead* mh = (MethodHead*)info;
Il2CppMethodPointer orign = mh->methodPtr;
mh->methodPtr = hook;
return orign;
}
Il2CppClass* il2cpp_get_exception_class()
{
static Il2CppClass* klass = NULL;
if (klass == NULL)
{
klass = il2cpp_get_class(il2cpp_get_corlib(), "System", "Exception");
}
return klass;
}
Il2CppObject * il2cpp_exception_property(Il2CppObject *obj, const char *name, char is_virtual)
{
Il2CppObject *get = NULL;
Il2CppObject *get_virt = NULL;
Il2CppObject *exc = NULL;
get = il2cpp_class_get_method_from_name(il2cpp_get_exception_class(), name, 0);
if (get) {
if (is_virtual) {
get_virt = il2cpp_object_get_virtual_method(obj, get);
if (get_virt)
get = get_virt;
}
return (Il2CppObject *)il2cpp_runtime_invoke(get, obj, NULL, &exc);
}
return NULL;
}