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/*
* Copyright 2016 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "app/src/util_android.h"
#include <assert.h>
#include <jni.h>
#include <pthread.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <algorithm>
#include <cstdint>
#include <list>
#include <map>
#include <string>
#include <utility>
#include <vector>
#include "app/app_resources.h"
#include "app/src/app_common.h"
#include "app/src/embedded_file.h"
#include "app/src/include/firebase/internal/common.h"
#include "app/src/log.h"
namespace firebase {
// Log method in log_android.h.
extern "C" JNIEXPORT void JNICALL
Java_com_google_firebase_app_internal_cpp_Log_nativeLog(
JNIEnv* env, jobject instance, jint priority, jstring tag, jstring msg);
namespace util {
// clang-format off
#define CLASS_LOADER_METHODS(X) \
X(LoadClass, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;"), \
X(FindLoadedClass, "findLoadedClass", \
"(Ljava/lang/String;)Ljava/lang/Class;")
// clang-format on
METHOD_LOOKUP_DECLARATION(class_loader, CLASS_LOADER_METHODS)
METHOD_LOOKUP_DEFINITION(class_loader, "java/lang/ClassLoader",
CLASS_LOADER_METHODS)
// Used to setup the cache of Set class method IDs to reduce time spent looking
// up methods by string.
// clang-format off
#define JNI_RESULT_CALLBACK_METHODS(X) \
X(Constructor, "<init>", "(Lcom/google/android/gms/tasks/Task;JJ)V"), \
X(Cancel, "cancel", "()V")
// clang-format on
METHOD_LOOKUP_DECLARATION(jniresultcallback, JNI_RESULT_CALLBACK_METHODS)
METHOD_LOOKUP_DEFINITION(
jniresultcallback, "com/google/firebase/app/internal/cpp/JniResultCallback",
JNI_RESULT_CALLBACK_METHODS)
// clang-format off
#define CPP_THREAD_DISPATCHER_CONTEXT_METHODS(X) \
X(Constructor, "<init>", "(JJJ)V"), \
X(Cancel, "cancel", "()V"), \
X(ReleaseExecuteCancelLock, "releaseExecuteCancelLock", "()V"), \
X(AcquireExecuteCancelLock, "acquireExecuteCancelLock", "()Z")
// clang-format on
METHOD_LOOKUP_DECLARATION(cppthreaddispatchercontext,
CPP_THREAD_DISPATCHER_CONTEXT_METHODS)
METHOD_LOOKUP_DEFINITION(
cppthreaddispatchercontext,
"com/google/firebase/app/internal/cpp/CppThreadDispatcherContext",
CPP_THREAD_DISPATCHER_CONTEXT_METHODS)
// clang-format off
#define CPP_THREAD_DISPATCHER_METHODS(X) \
X(RunOnMainThread, "runOnMainThread", "(Landroid/app/Activity;" \
"Lcom/google/firebase/app/internal/cpp/CppThreadDispatcherContext;)V", \
kMethodTypeStatic), \
X(RunOnBackgroundThread, "runOnBackgroundThread", \
"(Lcom/google/firebase/app/internal/cpp/CppThreadDispatcherContext;)V", \
kMethodTypeStatic)
// clang-format on
METHOD_LOOKUP_DECLARATION(cppthreaddispatcher, CPP_THREAD_DISPATCHER_METHODS)
METHOD_LOOKUP_DEFINITION(
cppthreaddispatcher,
"com/google/firebase/app/internal/cpp/CppThreadDispatcher",
CPP_THREAD_DISPATCHER_METHODS)
// clang-format off
#define LOG_METHODS(X) \
X(Shutdown, "shutdown", "()V", util::kMethodTypeStatic)
// clang-format on
METHOD_LOOKUP_DECLARATION(log, LOG_METHODS)
METHOD_LOOKUP_DEFINITION(log, "com/google/firebase/app/internal/cpp/Log",
LOG_METHODS)
// Methods of the android.net.Uri.Builder class,
// used to create android.net.Uri objects.
// clang-format off
#define URI_BUILDER_METHODS(X) \
X(Constructor, "<init>", "()V"), \
X(EncodedPath, "encodedPath", \
"(Ljava/lang/String;)Landroid/net/Uri$Builder;"), \
X(Build, "build", "()Landroid/net/Uri;")
// clang-format on
METHOD_LOOKUP_DECLARATION(uribuilder, URI_BUILDER_METHODS)
METHOD_LOOKUP_DEFINITION(uribuilder, "android/net/Uri$Builder",
URI_BUILDER_METHODS)
// Methods of the java.net.URL class.
// clang-format off
#define URL_METHODS(X) \
X(Constructor, "<init>", "(Ljava/lang/String;)V"), \
X(ConstructorWithURL, "<init>", "(Ljava/net/URL;Ljava/lang/String;)V")
// clang-format on
METHOD_LOOKUP_DECLARATION(url, URL_METHODS)
METHOD_LOOKUP_DEFINITION(url, "java/net/URL", URL_METHODS)
// clang-format off
#define FILE_OUTPUT_STREAM_METHODS(X) \
X(ConstructorFile, "<init>", "(Ljava/io/File;)V"), \
X(Write, "write", "([BII)V"), \
X(Close, "close", "()V")
// clang-format on
METHOD_LOOKUP_DECLARATION(file_output_stream, FILE_OUTPUT_STREAM_METHODS)
METHOD_LOOKUP_DEFINITION(file_output_stream, "java/io/FileOutputStream",
FILE_OUTPUT_STREAM_METHODS)
// clang-format off
#define DEX_CLASS_LOADER_METHODS(X) \
X(Constructor, "<init>", \
"(Ljava/lang/String;Ljava/lang/String;" \
"Ljava/lang/String;Ljava/lang/ClassLoader;)V"), \
X(LoadClass, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;")
// clang-format on
METHOD_LOOKUP_DECLARATION(dex_class_loader, DEX_CLASS_LOADER_METHODS)
METHOD_LOOKUP_DEFINITION(dex_class_loader,
PROGUARD_KEEP_CLASS "dalvik/system/DexClassLoader",
DEX_CLASS_LOADER_METHODS)
#if defined(FIREBASE_ANDROID_FOR_DESKTOP)
// clang-format off
#define URL_CLASS_LOADER_METHODS(X) \
X(Constructor, "<init>", "([Ljava/net/URL;Ljava/lang/ClassLoader;)V"), \
X(LoadClass, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;")
// clang-format on
METHOD_LOOKUP_DECLARATION(url_class_loader, URL_CLASS_LOADER_METHODS)
METHOD_LOOKUP_DEFINITION(url_class_loader, "java/net/URLClassLoader",
URL_CLASS_LOADER_METHODS)
// clang-format off
#define JAVA_URI_METHODS(X) X(ToUrl, "toURL", "()Ljava/net/URL;")
// clang-format on
METHOD_LOOKUP_DECLARATION(java_uri, JAVA_URI_METHODS)
METHOD_LOOKUP_DEFINITION(java_uri, "java/net/URI", JAVA_URI_METHODS)
#endif // defined(FIREBASE_ANDROID_FOR_DESKTOP)
// Used to call android.content.res.Resources methods.
// clang-format off
#define RESOURCES_METHODS(X) \
X(GetIdentifier, "getIdentifier", \
"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I")
// clang-format on
METHOD_LOOKUP_DECLARATION(resources, RESOURCES_METHODS)
METHOD_LOOKUP_DEFINITION(resources, "android/content/res/Resources",
RESOURCES_METHODS)
METHOD_LOOKUP_DEFINITION(activity, "android/app/Activity", ACTIVITY_METHODS)
METHOD_LOOKUP_DEFINITION(array_list, "java/util/ArrayList", ARRAY_LIST_METHODS)
METHOD_LOOKUP_DEFINITION(asset_file_descriptor,
"android/content/res/AssetFileDescriptor",
ASSETFILEDESCRIPTOR_METHODS)
METHOD_LOOKUP_DEFINITION(boolean_class, "java/lang/Boolean", BOOLEAN_METHODS)
METHOD_LOOKUP_DEFINITION(bundle, "android/os/Bundle", BUNDLE_METHODS)
METHOD_LOOKUP_DEFINITION(byte_class, "java/lang/Byte", BYTE_METHODS)
METHOD_LOOKUP_DEFINITION(character_class, "java/lang/Character",
CHARACTER_METHODS);
METHOD_LOOKUP_DEFINITION(class_class, "java/lang/Class", CLASS_METHODS)
METHOD_LOOKUP_DEFINITION(content_resolver, "android/content/ContentResolver",
CONTENTRESOLVER_METHODS)
METHOD_LOOKUP_DEFINITION(context, "android/content/Context", CONTEXT_METHODS)
METHOD_LOOKUP_DEFINITION(cursor, "android/database/Cursor", CURSOR_METHODS)
METHOD_LOOKUP_DEFINITION(date, "java/util/Date", DATE_METHODS);
METHOD_LOOKUP_DEFINITION(double_class, "java/lang/Double", DOUBLE_METHODS)
METHOD_LOOKUP_DEFINITION(enum_class, "java/lang/Enum", ENUM_METHODS)
METHOD_LOOKUP_DEFINITION(file, "java/io/File", FILE_METHODS)
METHOD_LOOKUP_DEFINITION(float_class, "java/lang/Float", FLOAT_METHODS)
METHOD_LOOKUP_DEFINITION(hash_map, "java/util/HashMap", HASHMAP_METHODS)
METHOD_LOOKUP_DEFINITION(integer_class, "java/lang/Integer", INTEGER_METHODS)
METHOD_LOOKUP_DEFINITION(intent, "android/content/Intent", INTENT_METHODS)
METHOD_LOOKUP_DEFINITION(iterable, "java/lang/Iterable", ITERABLE_METHODS)
METHOD_LOOKUP_DEFINITION(iterator, "java/util/Iterator", ITERATOR_METHODS)
METHOD_LOOKUP_DEFINITION(list, "java/util/List", LIST_METHODS)
METHOD_LOOKUP_DEFINITION(long_class, "java/lang/Long", LONG_METHODS)
METHOD_LOOKUP_DEFINITION(map, "java/util/Map", MAP_METHODS)
METHOD_LOOKUP_DEFINITION(parcel_file_descriptor,
"android/os/ParcelFileDescriptor",
PARCELFILEDESCRIPTOR_METHODS)
METHOD_LOOKUP_DEFINITION(set, "java/util/Set", SET_METHODS)
METHOD_LOOKUP_DEFINITION(short_class, "java/lang/Short", SHORT_METHODS);
METHOD_LOOKUP_DEFINITION(string, "java/lang/String", STRING_METHODS)
METHOD_LOOKUP_DEFINITION(throwable, "java/lang/Throwable", THROWABLE_METHODS)
METHOD_LOOKUP_DEFINITION(uri, "android/net/Uri", URI_METHODS)
METHOD_LOOKUP_DEFINITION(object, "java/lang/Object", OBJECT_METHODS)
// Number of references to this module via InitializeActivityClasses() vs.
// TerminateActivityClasses(). Note that the first instance of Initialize()
// also calls InitializeActivityClasses().
static unsigned int g_initialized_activity_count = 0;
// Number of references to this module via Initialize() vs. Terminate().
static unsigned int g_initialized_count = 0;
// Data associated with each Java callback in flight.
struct CallbackData {
// Global reference to the Java callback class that references this
// struct.
jobject callback_reference;
// User specified data for the callback.
void* data;
// References CallbackData within the list.
std::list<CallbackData>::iterator iterator;
// Reference to the list containing this structure.
std::list<CallbackData>* list;
// Whether the callback is complete.
bool complete;
};
// Tracks the set of global references to Java callback classes in flight.
// This makes it possible to to remove references to the C++ objects when
// util::Terminate() is called.
static std::map<const char*, std::list<CallbackData>>* g_task_callbacks;
// Mutex for g_task_callbacks.
static pthread_mutex_t g_task_callbacks_mutex;
// Global references to class loaders used to find classes and load embedded
// classes.
static std::vector<jobject>* g_class_loaders;
static bool g_jniresultcallback_loaded = false;
JNIEXPORT void JNICALL JniResultCallback_nativeOnResult(
JNIEnv* env, jobject clazz, jobject result, jboolean success,
jboolean cancelled, jstring status_message, jlong callback_fn_param,
jlong callback_data);
static const JNINativeMethod kJniCallbackMethod = {
"nativeOnResult", "(Ljava/lang/Object;ZZLjava/lang/String;JJ)V",
reinterpret_cast<void*>(JniResultCallback_nativeOnResult)};
static const JNINativeMethod kNativeLogMethods[] = {
{"nativeLog", "(ILjava/lang/String;Ljava/lang/String;)V",
reinterpret_cast<void*>(
firebase::Java_com_google_firebase_app_internal_cpp_Log_nativeLog)}};
static const char* kResourceTypeStrings[] = {
RESOURCE_TYPES(RESOURCE_TYPE_STRING),
};
// LINT.IfChange
static const char kMissingJavaClassError[] =
"Java class %s not found. "
"Please verify the AAR which contains the %s class is included "
"in your app.";
static const char kMissingJavaMethodFieldError[] =
"Unable to find %s. "
"Please verify the AAR which contains the %s class is included "
"in your app.";
// LINT.ThenChange(//depot_firebase_cpp/app/client/unity/src/swig/app.SWIG)
// Create a global reference to the specified class loader add it to the
// list
// of class loaders and release the local reference.
static void AddClassLoader(JNIEnv* env, jobject class_loader_object) {
assert(class_loader_object);
assert(g_class_loaders);
g_class_loaders->push_back(env->NewGlobalRef(class_loader_object));
env->DeleteLocalRef(class_loader_object);
}
// Get the last class loader added to the g_class_loaders list.
static jobject GetParentLoader() {
assert(g_class_loaders);
return g_class_loaders->back();
}
// Try to find a class in the list of class loaders.
static jclass FindOrLoadClassFromLoaders(JNIEnv* env, const char* class_name) {
assert(g_class_loaders);
static const class_loader::Method kFindLoadClassMethods[] = {
class_loader::kFindLoadedClass, class_loader::kLoadClass};
jstring class_name_object = env->NewStringUTF(class_name);
jclass class_object = nullptr;
for (size_t i = 0; i < FIREBASE_ARRAYSIZE(kFindLoadClassMethods); ++i) {
for (auto it = g_class_loaders->begin();
!class_object && it != g_class_loaders->end(); ++it) {
class_object = static_cast<jclass>(env->CallObjectMethod(
*it, class_loader::GetMethodId(kFindLoadClassMethods[i]),
class_name_object));
if (env->ExceptionCheck()) {
env->ExceptionClear();
class_object = nullptr;
}
}
}
env->DeleteLocalRef(class_name_object);
return class_object;
}
// Create the list of class loaders initializing it with the activity's
// class loader.
static void InitializeClassLoaders(JNIEnv* env, jobject activity_object) {
assert(!g_class_loaders);
g_class_loaders = new std::vector<jobject>();
jobject class_loader = env->CallObjectMethod(
activity_object, activity::GetMethodId(activity::kGetClassLoader));
if (!CheckAndClearJniExceptions(env)) {
AddClassLoader(env, class_loader);
}
}
// Remove all global references to class loaders and destroy the list.
static void TerminateClassLoaders(JNIEnv* env) {
assert(g_class_loaders);
for (auto it = g_class_loaders->begin(); it != g_class_loaders->end(); ++it) {
env->DeleteGlobalRef(*it);
}
delete g_class_loaders;
g_class_loaders = nullptr;
}
// This class executes the callback when it goes out of scope, unless Cancel()
// is called first.
template <typename T>
class ScopedCleanup {
public:
// cb is a callback to be called when the instance goes out of scope.
// user_data here will be passed to the callback.
ScopedCleanup(void (*callback)(T*), T* user_data)
: callback_(callback), user_data_(user_data) {}
~ScopedCleanup() {
if (callback_) callback_(user_data_);
}
void Cancel() { callback_ = nullptr; }
private:
void (*callback_)(T*);
T* user_data_;
};
// Release cached classes.
static void ReleaseClasses(JNIEnv* env) {
asset_file_descriptor::ReleaseClass(env);
array_list::ReleaseClass(env);
boolean_class::ReleaseClass(env);
bundle::ReleaseClass(env);
byte_class::ReleaseClass(env);
character_class::ReleaseClass(env);
class_class::ReleaseClass(env);
content_resolver::ReleaseClass(env);
context::ReleaseClass(env);
cursor::ReleaseClass(env);
date::ReleaseClass(env);
dex_class_loader::ReleaseClass(env);
double_class::ReleaseClass(env);
enum_class::ReleaseClass(env);
file::ReleaseClass(env);
file_output_stream::ReleaseClass(env);
float_class::ReleaseClass(env);
hash_map::ReleaseClass(env);
integer_class::ReleaseClass(env);
intent::ReleaseClass(env);
iterable::ReleaseClass(env);
iterator::ReleaseClass(env);
log::ReleaseClass(env);
long_class::ReleaseClass(env);
list::ReleaseClass(env);
map::ReleaseClass(env);
parcel_file_descriptor::ReleaseClass(env);
resources::ReleaseClass(env);
set::ReleaseClass(env);
short_class::ReleaseClass(env);
string::ReleaseClass(env);
throwable::ReleaseClass(env);
uri::ReleaseClass(env);
object::ReleaseClass(env);
uribuilder::ReleaseClass(env);
url::ReleaseClass(env);
if (g_jniresultcallback_loaded) {
jniresultcallback::ReleaseClass(env);
g_jniresultcallback_loaded = false;
}
JavaThreadContext::Terminate(env);
#if defined(FIREBASE_ANDROID_FOR_DESKTOP)
java_uri::ReleaseClass(env);
url_class_loader::ReleaseClass(env);
#endif // defined(FIREBASE_ANDROID_FOR_DESKTOP)
}
// Releases only the classes from InitializeActivityClasses.
// This is defined just for pairity with ReleaseClasses above, in the context
// of classes initialized with InitializeActivityClasses.
static void ReleaseActivityClasses(JNIEnv* env) {
activity::ReleaseClass(env);
class_loader::ReleaseClass(env);
}
bool InitializeActivityClasses(JNIEnv* env, jobject activity_object) {
g_initialized_activity_count++;
if (g_initialized_activity_count > 1) {
return true;
}
ScopedCleanup<JNIEnv> cleanup(TerminateActivityClasses, env);
// If we get here, it's the first call to Initialize.
// Cache method pointers.
if (!(activity::CacheMethodIds(env, activity_object) &&
class_loader::CacheMethodIds(env, activity_object))) {
return false;
}
InitializeClassLoaders(env, activity_object);
CheckAndClearJniExceptions(env);
cleanup.Cancel();
return true;
}
void TerminateActivityClasses(JNIEnv* env) {
FIREBASE_ASSERT(g_initialized_activity_count);
g_initialized_activity_count--;
if (g_initialized_activity_count == 0) {
ReleaseActivityClasses(env);
if (g_class_loaders) {
TerminateClassLoaders(env);
}
}
}
bool Initialize(JNIEnv* env, jobject activity_object) {
// Note: We increment g_initialized_count when it's possible to call
// Terminate() in all clean up code paths. ScopedCleanup calls Terminate() to
// clean up when its destructor is called, decrementing g_initialized_count.
if (g_initialized_count != 0) {
g_initialized_count++;
return true;
}
if (!InitializeActivityClasses(env, activity_object)) {
return false;
}
// Cache method pointers.
if (!(array_list::CacheMethodIds(env, activity_object) &&
asset_file_descriptor::CacheMethodIds(env, activity_object) &&
boolean_class::CacheMethodIds(env, activity_object) &&
bundle::CacheMethodIds(env, activity_object) &&
byte_class::CacheMethodIds(env, activity_object) &&
character_class::CacheMethodIds(env, activity_object) &&
class_class::CacheMethodIds(env, activity_object) &&
content_resolver::CacheMethodIds(env, activity_object) &&
context::CacheMethodIds(env, activity_object) &&
cursor::CacheMethodIds(env, activity_object) &&
date::CacheMethodIds(env, activity_object) &&
dex_class_loader::CacheMethodIds(env, activity_object) &&
double_class::CacheMethodIds(env, activity_object) &&
enum_class::CacheMethodIds(env, activity_object) &&
file::CacheMethodIds(env, activity_object) &&
file_output_stream::CacheMethodIds(env, activity_object) &&
float_class::CacheMethodIds(env, activity_object) &&
hash_map::CacheMethodIds(env, activity_object) &&
integer_class::CacheMethodIds(env, activity_object) &&
intent::CacheMethodIds(env, activity_object) &&
iterable::CacheMethodIds(env, activity_object) &&
iterator::CacheMethodIds(env, activity_object) &&
list::CacheMethodIds(env, activity_object) &&
long_class::CacheMethodIds(env, activity_object) &&
map::CacheMethodIds(env, activity_object) &&
parcel_file_descriptor::CacheMethodIds(env, activity_object) &&
resources::CacheMethodIds(env, activity_object) &&
set::CacheMethodIds(env, activity_object) &&
short_class::CacheMethodIds(env, activity_object) &&
string::CacheMethodIds(env, activity_object) &&
throwable::CacheMethodIds(env, activity_object) &&
uri::CacheMethodIds(env, activity_object) &&
object::CacheMethodIds(env, activity_object) &&
uribuilder::CacheMethodIds(env, activity_object) &&
url::CacheMethodIds(env, activity_object))) {
ReleaseClasses(env);
TerminateActivityClasses(env);
return false;
}
ScopedCleanup<JNIEnv> cleanup(Terminate, env);
// If anything returns early from here on, it will run Terminate to clean up
// via the ScopedCleanup destructor. That will decrement the reference count,
// so we need to bump the ref count now.
g_initialized_count++;
#if defined(FIREBASE_ANDROID_FOR_DESKTOP)
// Cache JVM class-loader for desktop.
if (!(java_uri::CacheMethodIds(env, activity_object) &&
url_class_loader::CacheMethodIds(env, activity_object))) {
return false;
}
#endif // defined(FIREBASE_ANDROID_FOR_DESKTOP)
// Cache embedded files and load embedded classes.
const std::vector<internal::EmbeddedFile> embedded_files =
util::CacheEmbeddedFiles(
env, activity_object,
internal::EmbeddedFile::ToVector(firebase_app::app_resources_filename,
firebase_app::app_resources_data,
firebase_app::app_resources_size));
// Cache the Log class and register the native log method.
if (!(log::CacheClassFromFiles(env, activity_object, &embedded_files) !=
nullptr &&
log::CacheMethodIds(env, activity_object) &&
log::RegisterNatives(env, kNativeLogMethods,
FIREBASE_ARRAYSIZE(kNativeLogMethods)))) {
return false;
}
// With a subset of dependencies, jniresultcallback can't be loaded due to
// lack of gms.Task. This is fine - just make sure not to try terminating it.
g_jniresultcallback_loaded =
(jniresultcallback::CacheClassFromFiles(env, activity_object,
&embedded_files) &&
jniresultcallback::CacheMethodIds(env, activity_object) &&
jniresultcallback::RegisterNatives(env, &kJniCallbackMethod, 1));
if (!JavaThreadContext::Initialize(env, activity_object, embedded_files)) {
return false;
}
CheckAndClearJniExceptions(env);
g_task_callbacks = new std::map<const char*, std::list<CallbackData>>();
g_task_callbacks_mutex = PTHREAD_MUTEX_INITIALIZER;
cleanup.Cancel();
return true;
}
// Terminate the utilities library. Releases all global references to
// classes.
void Terminate(JNIEnv* env) {
FIREBASE_ASSERT(g_initialized_count);
g_initialized_count--;
if (g_initialized_count == 0) {
if (g_task_callbacks) {
CancelCallbacks(env, nullptr);
pthread_mutex_lock(&g_task_callbacks_mutex);
delete g_task_callbacks;
g_task_callbacks = nullptr;
pthread_mutex_unlock(&g_task_callbacks_mutex);
pthread_mutex_destroy(&g_task_callbacks_mutex);
}
// Shutdown the log if it was initialized.
jclass log_class = log::GetClass();
if (log_class) {
env->CallStaticVoidMethod(log_class, log::GetMethodId(log::kShutdown));
CheckAndClearJniExceptions(env);
}
ReleaseClasses(env);
TerminateActivityClasses(env);
}
}
bool LookupMethodIds(JNIEnv* env, jclass clazz,
const MethodNameSignature* method_name_signatures,
size_t number_of_method_name_signatures,
jmethodID* method_ids, const char* class_name) {
FIREBASE_ASSERT(method_name_signatures);
FIREBASE_ASSERT(number_of_method_name_signatures > 0);
FIREBASE_ASSERT(method_ids);
FIREBASE_ASSERT_MESSAGE_RETURN(false, clazz, kMissingJavaClassError,
class_name, class_name);
LogDebug("Looking up methods for %s", class_name);
for (size_t i = 0; i < number_of_method_name_signatures; ++i) {
const MethodNameSignature& method = method_name_signatures[i];
if (method.optional == kMethodOptional && method.name == nullptr) {
continue;
}
switch (method.type) {
case kMethodTypeInstance:
method_ids[i] = env->GetMethodID(clazz, method.name, method.signature);
break;
case kMethodTypeStatic:
method_ids[i] =
env->GetStaticMethodID(clazz, method.name, method.signature);
break;
}
if (CheckAndClearJniExceptions(env)) {
method_ids[i] = 0;
}
char method_message[256];
snprintf(method_message, sizeof(method_message),
"Method %s.%s (signature '%s', %s)", class_name, method.name,
method.signature,
method.type == kMethodTypeInstance ? "instance" : "static");
LogDebug("%s (optional %d) 0x%08x%s", method_message,
(method.optional == kMethodOptional) ? 1 : 0,
static_cast<int>(reinterpret_cast<intptr_t>(method_ids[i])),
method_ids[i] ? "" : " (not found)");
FIREBASE_ASSERT_MESSAGE_RETURN(
false, method_ids[i] || (method.optional == kMethodOptional),
kMissingJavaMethodFieldError, method_message, class_name);
}
return true;
}
// Lookup field IDs specified by the field_descriptors array and store
// in field_ids. Used by FIELD_LOOKUP_DECLARATION.
bool LookupFieldIds(JNIEnv* env, jclass clazz,
const FieldDescriptor* field_descriptors,
size_t number_of_field_descriptors, jfieldID* field_ids,
const char* class_name) {
FIREBASE_ASSERT(field_descriptors);
FIREBASE_ASSERT(number_of_field_descriptors > 0);
FIREBASE_ASSERT(field_ids);
FIREBASE_ASSERT_MESSAGE_RETURN(false, clazz, kMissingJavaClassError,
class_name, class_name);
LogDebug("Looking up fields for %s", class_name);
for (size_t i = 0; i < number_of_field_descriptors; ++i) {
const FieldDescriptor& field = field_descriptors[i];
if (field.optional == kMethodOptional && field.name == nullptr) {
continue;
}
switch (field.type) {
case kFieldTypeInstance:
field_ids[i] = env->GetFieldID(clazz, field.name, field.signature);
break;
case kFieldTypeStatic:
field_ids[i] =
env->GetStaticFieldID(clazz, field.name, field.signature);
break;
}
if (CheckAndClearJniExceptions(env)) {
field_ids[i] = 0;
}
char field_message[256];
snprintf(field_message, sizeof(field_message),
"Field %s.%s (signature '%s', %s)", class_name, field.name,
field.signature,
field.type == kFieldTypeInstance ? "instance" : "static");
LogDebug("%s (optional %d) 0x%08x%s", field_message,
(field.optional == kMethodOptional) ? 1 : 0,
static_cast<int>(reinterpret_cast<intptr_t>(field_ids[i])),
field_ids[i] ? "" : " (not found)");
FIREBASE_ASSERT_MESSAGE_RETURN(
false, field_ids[i] || (field.optional == kMethodOptional),
kMissingJavaMethodFieldError, field_message, class_name);
}
return true;
}
// Converts a `std::vector<std::string>` to a `java.util.ArrayList<String>`
// Returns a local ref to a List.
jobject StdVectorToJavaList(JNIEnv* env,
const std::vector<std::string>& string_vector) {
jobject java_list =
env->NewObject(array_list::GetClass(),
array_list::GetMethodId(array_list::kConstructor));
jmethodID add_method = array_list::GetMethodId(array_list::kAdd);
for (auto it = string_vector.begin(); it != string_vector.end(); ++it) {
jstring value = env->NewStringUTF(it->c_str());
env->CallBooleanMethod(java_list, add_method, value);
CheckAndClearJniExceptions(env);
env->DeleteLocalRef(value);
}
return java_list;
}
// Converts a `std::unordered_set<std::string>` to a
// `java.util.ArrayList<String>` Returns a local ref to a List.
jobject StdUnorderedSetToJavaList(
JNIEnv* env, const std::unordered_set<std::string>& string_set) {
jobject java_list =
env->NewObject(array_list::GetClass(),
array_list::GetMethodId(array_list::kConstructor));
jmethodID add_method = array_list::GetMethodId(array_list::kAdd);
for (auto it = string_set.begin(); it != string_set.end(); ++it) {
jstring value = env->NewStringUTF(it->c_str());
env->CallBooleanMethod(java_list, add_method, value);
CheckAndClearJniExceptions(env);
env->DeleteLocalRef(value);
}
return java_list;
}
// Converts a `std::map<Variant, Variant>` to a `java.util.Map<Object, Object>`.
// Returns a local ref to a Map.
jobject VariantMapToJavaMap(JNIEnv* env,
const std::map<Variant, Variant>& variant_map) {
jobject java_map = env->NewObject(
hash_map::GetClass(), hash_map::GetMethodId(hash_map::kConstructor));
jmethodID put_method = map::GetMethodId(map::kPut);
for (auto it = variant_map.begin(); it != variant_map.end(); ++it) {
jobject key = VariantToJavaObject(env, it->first);
jobject value = VariantToJavaObject(env, it->second);
jobject previous = env->CallObjectMethod(java_map, put_method, key, value);
CheckAndClearJniExceptions(env);
if (previous) env->DeleteLocalRef(previous);
env->DeleteLocalRef(value);
env->DeleteLocalRef(key);
}
return java_map;
}
// Converts an `std::map<const char*, const char*>` to a
// `java.util.Map<String, String>`.
void StdMapToJavaMap(JNIEnv* env, jobject* to,
const std::map<const char*, const char*>& string_map) {
jmethodID put_method = map::GetMethodId(map::kPut);
for (std::map<const char*, const char*>::const_iterator it =
string_map.begin();
it != string_map.end(); ++it) {
jstring key = env->NewStringUTF(it->first);
jstring value = env->NewStringUTF(it->second);
jobject previous = env->CallObjectMethod(*to, put_method, key, value);
CheckAndClearJniExceptions(env);
if (previous) env->DeleteLocalRef(previous);
env->DeleteLocalRef(value);
env->DeleteLocalRef(key);
}
}
// Converts an `std::map<std::string, std::string>` to a
// `java.util.Map<String, String>`.
void StdMapToJavaMap(JNIEnv* env, jobject* to,
const std::map<std::string, std::string>& from) {
jmethodID put_method = map::GetMethodId(map::kPut);
for (std::map<std::string, std::string>::const_iterator iter = from.begin();
iter != from.end(); ++iter) {
jstring key = env->NewStringUTF(iter->first.c_str());
jstring value = env->NewStringUTF(iter->second.c_str());
jobject previous = env->CallObjectMethod(*to, put_method, key, value);
CheckAndClearJniExceptions(env);
if (previous) env->DeleteLocalRef(previous);
env->DeleteLocalRef(value);
env->DeleteLocalRef(key);
}
}
// Converts a `java.util.Map<String, String>` to an
// `std::map<std::string, std::string>`.
// T is the type of the map. Our current requirements always have the same Key
// and Value types, so just specify one type.
// ConvertFn is of type: T Function(JNIEnv* env, jobject obj)
template <typename T, typename ConvertFn>
static void JavaMapToStdMapTemplate(JNIEnv* env, std::map<T, T>* to,
jobject from, ConvertFn convert) {
// Set<Object> key_set = from.keySet();
jobject key_set = env->CallObjectMethod(from, map::GetMethodId(map::kKeySet));
CheckAndClearJniExceptions(env);
// Iterator iter = key_set.iterator();
jobject iter =
env->CallObjectMethod(key_set, set::GetMethodId(set::kIterator));
CheckAndClearJniExceptions(env);
// while (iter.hasNext())
while (
env->CallBooleanMethod(iter, iterator::GetMethodId(iterator::kHasNext))) {
CheckAndClearJniExceptions(env);
// T key = iter.next();
// T value = from.get(key);
jobject key_object =
env->CallObjectMethod(iter, iterator::GetMethodId(iterator::kNext));
CheckAndClearJniExceptions(env);
jobject value_object =
env->CallObjectMethod(from, map::GetMethodId(map::kGet), key_object);
CheckAndClearJniExceptions(env);
const T key = convert(env, key_object);
const T value = convert(env, value_object);
env->DeleteLocalRef(key_object);
env->DeleteLocalRef(value_object);
to->insert(std::pair<T, T>(key, value));
}
env->DeleteLocalRef(iter);
env->DeleteLocalRef(key_set);
}
// Converts a `java.util.Map<String, String>` to an
// `std::map<std::string, std::string>`.
void JavaMapToStdMap(JNIEnv* env, std::map<std::string, std::string>* to,
jobject from) {
JavaMapToStdMapTemplate<std::string>(env, to, from, JStringToString);
}
// Converts a `java.util.Map<java.lang.Object, java.lang.Object>` to an
// `std::map<Variant, Variant>`.
void JavaMapToVariantMap(JNIEnv* env, std::map<Variant, Variant>* to,
jobject from) {
JavaMapToStdMapTemplate<Variant>(env, to, from, JavaObjectToVariant);
}
// Converts a `java.util.Set<String>` to a `std::vector<std::string>`.
void JavaSetToStdStringVector(JNIEnv* env, std::vector<std::string>* to,
jobject from) {
// Use an iterator over the set.
jobject iter =
env->CallObjectMethod(from, util::set::GetMethodId(util::set::kIterator));
CheckAndClearJniExceptions(env);
// while (iter.hasNext())
while (env->CallBooleanMethod(
iter, util::iterator::GetMethodId(util::iterator::kHasNext))) {
CheckAndClearJniExceptions(env);
// String elem = iter.next();
jobject elem_object = env->CallObjectMethod(
iter, util::iterator::GetMethodId(util::iterator::kNext));
CheckAndClearJniExceptions(env);
std::string elem = JniStringToString(env, elem_object);
to->push_back(elem);
}
env->DeleteLocalRef(iter);
}
// Converts a `std::vector<Variant>` to a `java.util.List<Object>`.
// Returns a local ref to a List.
jobject VariantVectorToJavaList(JNIEnv* env,
const std::vector<Variant>& variant_vector) {
jobject java_list =
env->NewObject(array_list::GetClass(),
array_list::GetMethodId(array_list::kConstructor));
jmethodID add_method = array_list::GetMethodId(array_list::kAdd);
for (auto it = variant_vector.begin(); it != variant_vector.end(); ++it) {
jobject value = VariantToJavaObject(env, *it);
env->CallBooleanMethod(java_list, add_method, value);
CheckAndClearJniExceptions(env);
env->DeleteLocalRef(value);
}
return java_list;
}
// Converts a `java.util.List<String>` to a `std::vector<std::string>`.
void JavaListToStdStringVector(JNIEnv* env, std::vector<std::string>* vector,
jobject from) {
int size = env->CallIntMethod(from, list::GetMethodId(list::kSize));
CheckAndClearJniExceptions(env);
vector->clear();
vector->reserve(size);
for (int i = 0; i < size; i++) {
jobject element =
env->CallObjectMethod(from, list::GetMethodId(list::kGet), i);
CheckAndClearJniExceptions(env);
vector->push_back(JniStringToString(env, element));
}
}
// Converts a `java.util.List<Object>` to a `std::vector<std::string>`.
void JavaObjectListToStdStringVector(JNIEnv* env, std::vector<std::string>* to,
jobject from) {
int size = env->CallIntMethod(from, list::GetMethodId(list::kSize));
CheckAndClearJniExceptions(env);
to->clear();
to->reserve(size);
for (int i = 0; i < size; i++) {
jobject element =
env->CallObjectMethod(from, list::GetMethodId(list::kGet), i);
CheckAndClearJniExceptions(env);
to->push_back(JniObjectToString(env, element));
env->DeleteLocalRef(element);
}
}
// Converts a `java.util.List<java.lang.Object>` to a `std::vector<Variant>`.
void JavaListToVariantList(JNIEnv* env, std::vector<Variant>* to,
jobject from) {
// int size = from.size();
int size = env->CallIntMethod(from, list::GetMethodId(list::kSize));
CheckAndClearJniExceptions(env);
to->clear();
to->reserve(size);
for (int i = 0; i < size; i++) {
// Object obj = from.get(i);
jobject obj = env->CallObjectMethod(from, list::GetMethodId(list::kGet), i);
CheckAndClearJniExceptions(env);
to->push_back(JavaObjectToVariant(env, obj));
env->DeleteLocalRef(obj);
}
}
// Convert a jstring to a std::string, releasing the reference to the
// jstring.
std::string JniStringToString(JNIEnv* env, jobject string_object) {
std::string return_string = JStringToString(env, string_object);
env->DeleteLocalRef(string_object);
return return_string;
}
// Convert a Java object of type java.lang.Object into an std::string, by
// calling toString(), then release the object.
std::string JniObjectToString(JNIEnv* env, jobject obj) {
if (obj == nullptr) return "";
jobject str =
env->CallObjectMethod(obj, object::GetMethodId(object::kToString));
CheckAndClearJniExceptions(env);
return JniStringToString(env, str);
}
// Convert a jstring (created by the JVM e.g passed into a native method)
// into
// a std::string. Unlike JniStringToString() this does not release the
// reference to the string_object as the caller owns the object in a native
// method.
std::string JStringToString(JNIEnv* env, jobject string_object) {
if (string_object == nullptr) return "";
const char* string_buffer =
env->GetStringUTFChars(static_cast<jstring>(string_object), 0);
std::string return_string(string_buffer);
env->ReleaseStringUTFChars(static_cast<jstring>(string_object),
string_buffer);
return return_string;
}
bool IsJArray(JNIEnv* env, jobject obj) {
jclass obj_class = env->GetObjectClass(obj);
const bool is_array = env->CallBooleanMethod(
obj_class, class_class::GetMethodId(class_class::kIsArray));
CheckAndClearJniExceptions(env);
env->DeleteLocalRef(obj_class);
return is_array;
}
std::string JObjectClassName(JNIEnv* env, jobject obj) {
jclass obj_class = env->GetObjectClass(obj);
jobject obj_name = env->CallObjectMethod(
obj_class, class_class::GetMethodId(class_class::kGetName));
CheckAndClearJniExceptions(env);
return JniStringToString(env, obj_name);
}
// Allow macros to iterate through all the primitive JNI types.
#define FIREBASE_JNI_PRIMITIVE_TYPES(X) \
X(boolean_class, "[Z", jboolean, Boolean, bool, Bool, "%d") \
X(byte_class, "[B", jbyte, Byte, uint8_t, UInt8, "%d") \
X(character_class, "[C", jchar, Char, char, Char, "%c") \
X(short_class, "[S", jshort, Short, int16_t, Int16, "%d") \
X(integer_class, "[I", jint, Int, int, Int, "%d") \
X(long_class, "[J", jlong, Long, int64_t, Int64, "%ld") \
X(float_class, "[F", jfloat, Float, float, Float, "%f") \
X(double_class, "[D", jdouble, Double, double, Double, "%f")
// Defines functions like this, but for all primitive JNI types.
//
// bool JBooleanToBool(JNIEnv* env, jobject obj) {
// return env->CallBooleanMethod(
// obj, boolean_class::GetMethodId(boolean_class::kValue));
// }
#define FIREBASE_JTYPE_TO_TYPE(type_class, array_format, jtype, jname, ctype, \
cname, printf_type) \
ctype J##jname##To##cname(JNIEnv* env, jobject obj) { \
ctype ret = env->Call##jname##Method( \
obj, type_class::GetMethodId(type_class::kValue)); \
CheckAndClearJniExceptions(env); \
return ret; \
}
FIREBASE_JNI_PRIMITIVE_TYPES(FIREBASE_JTYPE_TO_TYPE)
// Defines functions like this, but for all primitive JNI types.
//
// bool IsJBooleanArray(JNIEnv* env, jobject obj) {
// jclass array_class = env->FindClass("[Z");
// const bool is_array = env->IsInstanceOf(obj, array_class);
// env->DeleteLocalRef(array_class);
// return is_array;
// }
#define FIREBASE_IS_JARRAY(type_class, array_format, jtype, jname, ctype, \
cname, printf_type) \
bool IsJ##jname##Array(JNIEnv* env, jobject obj) { \
jclass array_class = env->FindClass(array_format); \
const bool is_array = env->IsInstanceOf(obj, array_class); \
env->DeleteLocalRef(array_class); \
return is_array; \
}
FIREBASE_JNI_PRIMITIVE_TYPES(FIREBASE_IS_JARRAY)
// Defines functions like this, but for all the JNI array types.
//
// Variant JBooleanArrayToVariant(JNIEnv* env, jbooleanArray array) {
// const size_t len = env->GetArrayLength(array);