extern void __attribute__ ((visibility ("hidden"))) HookNativeMethod(JNIEnv* env, jstring oldSoName, jstring newSoName, jstring oldSymbol, jstring newSymbol) {
jboolean isCopy = JNI_TRUE;
char* old_so_name = env->GetStringUTFChars(oldSoName, &isCopy);
if (old_so_name == NULL) {
return;
}
char* new_so_name = env->GetStringUTFChars(newSoName, &isCopy);
if (new_so_name == NULL) {
return;
}
char* old_symbol = env->GetStringUTFChars(oldSymbol, &isCopy);
if (old_symbol == NULL) {
return;
}
char* new_symbol = env->GetStringUTFChars(newSymbol, &isCopy);
if (new_symbol == NULL) {
return;
}
void* oldHandle = dlopen(old_so_name, RTLD_NOW);
if (oldHandle == NULL) {
return;
}
void* newHandle = dlopen(new_so_name, RTLD_NOW);
if (newHandle == NULL) {
return;
}
void* oldMethod = dvmDlsym(oldHandle, old_symbol);
if (oldMethod == NULL) {
return;
}
void* pluginNativeMethod = dvmDlsym(newHandle, new_symbol);
if (pluginNativeMethod == NULL) {
return;
}
void* OldFunc = NULL;
if (registerInlineHook(oldMethod, pluginNativeMethod, (uint32_t **)&OldFunc) == INLINE_HOOK_OK) {
LOGD("registerInlineHook Ok");
}
if (inlineHook(oldMethod) == INLINE_HOOK_OK ) {
LOGD("inlineHook Ok");
}
//TK_InlineHookFunction(oldMethod, pluginNativeMethod, &OldFunc);
// if (newHandle) {
// void* pluginNativeMethod = dvmDlsym(newHandle, new_symbol);
// LOGD("the new so method addr is %p", pluginNativeMethod);
// addElfHook(old_so_name, old_symbol, pluginNativeMethod);
// void* oldHandle = elfLoadLibrary(old_so_name);
// elfHookSymbol(oldHandle, old_symbol, (void**)&pluginNativeMethod);
// }
}
int hook()
{
LOGD("[*] start inline Hook ~ \r\n");
if (registerInlineHook((uint32_t) pread, (uint32_t) new_pread, (uint32_t **) &old_pread) != ELE7EN_OK)
return -1;
if (inlineHook((uint32_t) pread) != ELE7EN_OK)
return -1;
LOGD("[*] Old read = %p\n", pread);
LOGD("[*] New read = %p\n", new_pread);
return 0;
}
int hook()
{
LOGD("[*] start inline Hook ~ \r\n");
if (registerInlineHook((uint32_t) strncmp, (uint32_t) new_strncmp, (uint32_t **) &old_strncmp) != ELE7EN_OK)
return -1;
if (inlineHook((uint32_t) strncmp) != ELE7EN_OK)
return -1;
LOGD("[*] Old strncpy = %p\n", strncmp);
LOGD("[*] New strncpy = %p\n", new_strncmp);
return 0;
}
