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refactor: cpp syntax

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make isSplitApk nullable
This commit is contained in:
authorisation
2023-09-01 22:45:06 +02:00
parent 3cde2aba9a
commit b2e9afcb35
3 changed files with 37 additions and 64 deletions
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2
app/src/main/kotlin/me/rhunk/snapenhance/ui/manager/data/InstallationSummary.kt
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@@ -6,7 +6,7 @@ data class SnapchatAppInfo(
val version: String,
val versionCode: Long,
val isLSPatched: Boolean,
val isSplitApk: Boolean,
val isSplitApk: Boolean?
)
data class ModInfo(

3
native/.gitignore vendored
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@@ -1 +1,2 @@
/build
/build
/.cxx

96
native/jni/src/library.cpp
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@@ -14,90 +14,70 @@
#define ARM64 false
#endif
static native_config_t *native_config;
static JavaVM *java_vm;
static jmethodID native_lib_on_unary_call_method;
static void *(*unaryCall_original)(void *, const char *, grpc::grpc_byte_buffer **, void *, void *, void *);
static auto fstat_original = (int (*)(int, struct stat *)) nullptr;
static int fstat_hook(int fd, struct stat *buf) {
char name[256];
memset(name, 0, 256);
memset(name, 0, sizeof(name));
snprintf(name, sizeof(name), "/proc/self/fd/%d", fd);
readlink(name, name, sizeof(name));
auto fileName = std::string(name);
std::string fileName(name);
//prevent blizzardv2 metrics
if (native_config->disable_metrics &&
fileName.find("files/blizzardv2/queues") != std::string::npos) {
if (native_config->disable_metrics && fileName.find("files/blizzardv2/queues") != std::string::npos) {
unlink(name);
return -1;
}
//prevent bitmoji to load
if (native_config->disable_bitmoji &&
fileName.find("com.snap.file_manager_4_SCContent") != std::string::npos) {
if (native_config->disable_bitmoji && fileName.find("com.snap.file_manager_4_SCContent") != std::string::npos) {
return -1;
}
return fstat_original(fd, buf);
}
static jobject native_lib_object;
static jmethodID native_lib_on_unary_call_method;
static auto unaryCall_original = (void *(*)(void *, const char *, grpc::grpc_byte_buffer **, void *,
void *, void *)) nullptr;
static void *
unaryCall_hook(void *unk1, const char *uri, grpc::grpc_byte_buffer **buffer_ptr, void *unk4,
void *unk5, void *unk6) {
auto slice_buffer = (*buffer_ptr)->slice_buffer;
static void *unaryCall_hook(void *unk1, const char *uri, grpc::grpc_byte_buffer **buffer_ptr, void *unk4, void *unk5, void *unk6) {
// request without reference counter can be hooked using xposed ig
auto slice_buffer = (*buffer_ptr)->slice_buffer;
if (slice_buffer->ref_counter == 0) {
return unaryCall_original(unk1, uri, buffer_ptr, unk4, unk5, unk6);
}
auto env = (JNIEnv *) nullptr;
java_vm->GetEnv((void **) &env, JNI_VERSION_1_6);
JNIEnv *env = nullptr;
java_vm->GetEnv((void **)&env, JNI_VERSION_1_6);
auto jni_buffer_array = env->NewByteArray(slice_buffer->length);
env->SetByteArrayRegion(jni_buffer_array, 0, slice_buffer->length,
(jbyte *) slice_buffer->data);
env->SetByteArrayRegion(jni_buffer_array, 0, slice_buffer->length, (jbyte *)slice_buffer->data);
auto native_request_data_object = env->CallObjectMethod(native_lib_object,
native_lib_on_unary_call_method,
env->NewStringUTF(uri),
jni_buffer_array);
auto native_request_data_object = env->CallObjectMethod(native_lib_object, native_lib_on_unary_call_method, env->NewStringUTF(uri), jni_buffer_array);
if (native_request_data_object != nullptr) {
auto native_request_data_class = env->GetObjectClass(native_request_data_object);
auto is_canceled = env->GetBooleanField(native_request_data_object,
env->GetFieldID(native_request_data_class,
"canceled", "Z"));
auto is_canceled = env->GetBooleanField(native_request_data_object, env->GetFieldID(native_request_data_class, "canceled", "Z"));
if (is_canceled) {
LOGD("canceled request for %s", uri);
return nullptr;
}
auto new_buffer = env->GetObjectField(native_request_data_object,
env->GetFieldID(native_request_data_class, "buffer",
"[B"));
auto new_buffer_length = env->GetArrayLength((jbyteArray) new_buffer);
auto new_buffer_data = env->GetByteArrayElements((jbyteArray) new_buffer, nullptr);
auto new_buffer = env->GetObjectField(native_request_data_object, env->GetFieldID(native_request_data_class, "buffer", "[B"));
auto new_buffer_length = env->GetArrayLength((jbyteArray)new_buffer);
auto new_buffer_data = env->GetByteArrayElements((jbyteArray)new_buffer, nullptr);
LOGD("rewrote request for %s (length: %d)", uri, new_buffer_length);
//we need to allocate a new ref_counter struct and copy the old ref_counter and the new_buffer to it
const static auto ref_counter_struct_size =
(uintptr_t) slice_buffer->data - (uintptr_t) slice_buffer->ref_counter;
const static auto ref_counter_struct_size = (uintptr_t)slice_buffer->data - (uintptr_t)slice_buffer->ref_counter;
auto new_ref_counter = malloc(ref_counter_struct_size + new_buffer_length);
//copy the old ref_counter and the native_request_data_object
memcpy(new_ref_counter, slice_buffer->ref_counter, ref_counter_struct_size);
memcpy((void *) ((uintptr_t) new_ref_counter + ref_counter_struct_size), new_buffer_data,
new_buffer_length);
memcpy((void *)((uintptr_t)new_ref_counter + ref_counter_struct_size), new_buffer_data, new_buffer_length);
//free the old ref_counter
free(slice_buffer->ref_counter);
@@ -105,13 +85,12 @@ unaryCall_hook(void *unk1, const char *uri, grpc::grpc_byte_buffer **buffer_ptr,
//update the slice_buffer
slice_buffer->ref_counter = new_ref_counter;
slice_buffer->length = new_buffer_length;
slice_buffer->data = (uint8_t *) ((uintptr_t) new_ref_counter + ref_counter_struct_size);
slice_buffer->data = (uint8_t *)((uintptr_t)new_ref_counter + ref_counter_struct_size);
}
return unaryCall_original(unk1, uri, buffer_ptr, unk4, unk5, unk6);
}
void JNICALL init(JNIEnv *env, jobject clazz, jobject classloader) {
LOGD("Initializing native");
// config
@@ -119,33 +98,32 @@ void JNICALL init(JNIEnv *env, jobject clazz, jobject classloader) {
// native lib object
native_lib_object = env->NewGlobalRef(clazz);
native_lib_on_unary_call_method = env->GetMethodID(
env->GetObjectClass(clazz),
"onNativeUnaryCall",
"(Ljava/lang/String;[B)L" BUILD_NAMESPACE "/NativeRequestData;"
);
native_lib_on_unary_call_method = env->GetMethodID(env->GetObjectClass(clazz), "onNativeUnaryCall", "(Ljava/lang/String;[B)L" BUILD_NAMESPACE "/NativeRequestData;");
// load libclient.so
util::load_library(env, classloader, "client");
auto client_module = util::get_module("libclient.so");
if (client_module.base == 0) {
LOGE("libclient not found");
return;
}
//client_module.base -= 0x1000; // debugging purposes
// client_module.base -= 0x1000;
// debugging purposes
LOGD("libclient.so base=0x%0lx, size=0x%0lx", client_module.base, client_module.size);
// hooks
DobbyHook((void *) DobbySymbolResolver("libc.so", "fstat"), (void *) fstat_hook,
(void **) &fstat_original);
DobbyHook((void *)DobbySymbolResolver("libc.so", "fstat"), (void *)fstat_hook, (void **)&fstat_original);
auto unaryCall_func = util::find_signature(
client_module.base, client_module.size,
ARM64 ? "A8 03 1F F8 C2 00 00 94" : "0A 90 00 F0 3F F9",
ARM64 ? -0x48 : -0x38
);
if (unaryCall_func != 0) {
DobbyHook((void *) unaryCall_func, (void *) unaryCall_hook, (void **) &unaryCall_original);
DobbyHook((void *)unaryCall_func, (void *)unaryCall_hook, (void **)&unaryCall_original);
} else {
LOGE("can't find unaryCall signature");
}
@@ -161,22 +139,16 @@ void JNICALL load_config(JNIEnv *env, jobject _, jobject config_object) {
native_config->disable_metrics = GET_CONFIG_BOOL("disableMetrics");
}
extern "C" JNIEXPORT jint JNICALL
JNI_OnLoad(JavaVM *vm, void *_) {
java_vm = vm;
extern "C" JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *_) {
// register native methods
java_vm = vm;
JNIEnv *env = nullptr;
vm->GetEnv((void **) &env, JNI_VERSION_1_6);
vm->GetEnv((void **)&env, JNI_VERSION_1_6);
auto methods = std::vector<JNINativeMethod>();
methods.push_back({"init", "(Ljava/lang/ClassLoader;)V", (void *) init});
methods.push_back({"loadConfig", "(L" BUILD_NAMESPACE "/NativeConfig;)V",
(void *) load_config});
methods.push_back({"init", "(Ljava/lang/ClassLoader;)V", (void *)init});
methods.push_back({"loadConfig", "(L" BUILD_NAMESPACE "/NativeConfig;)V", (void *)load_config});
env->RegisterNatives(
env->FindClass(std::string(BUILD_NAMESPACE "/NativeLib").c_str()),
methods.data(),
methods.size()
);
env->RegisterNatives(env->FindClass(std::string(BUILD_NAMESPACE "/NativeLib").c_str()), methods.data(), methods.size());
return JNI_VERSION_1_6;
}