skyline/app/src/main/cpp/loader_jni.cpp

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// SPDX-License-Identifier: MPL-2.0
// Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
#include "skyline/crypto/key_store.h"
#include "skyline/vfs/nca.h"
#include "skyline/vfs/os_backing.h"
#include "skyline/loader/nro.h"
#include "skyline/loader/nso.h"
#include "skyline/loader/nca.h"
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#include "skyline/loader/xci.h"
#include "skyline/loader/nsp.h"
#include "skyline/jvm.h"
extern "C" JNIEXPORT jint JNICALL Java_emu_skyline_loader_RomFile_populate(JNIEnv *env, jobject thiz, jint jformat, jint fd, jstring appFilesPathJstring, jint systemLanguage) {
skyline::loader::RomFormat format{static_cast<skyline::loader::RomFormat>(jformat)};
auto keyStore{std::make_shared<skyline::crypto::KeyStore>(skyline::JniString(env, appFilesPathJstring))};
std::unique_ptr<skyline::loader::Loader> loader;
try {
auto backing{std::make_shared<skyline::vfs::OsBacking>(fd)};
switch (format) {
case skyline::loader::RomFormat::NRO:
loader = std::make_unique<skyline::loader::NroLoader>(backing);
break;
case skyline::loader::RomFormat::NSO:
loader = std::make_unique<skyline::loader::NsoLoader>(backing);
break;
case skyline::loader::RomFormat::NCA:
loader = std::make_unique<skyline::loader::NcaLoader>(backing, keyStore);
break;
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case skyline::loader::RomFormat::XCI:
loader = std::make_unique<skyline::loader::XciLoader>(backing, keyStore);
break;
case skyline::loader::RomFormat::NSP:
loader = std::make_unique<skyline::loader::NspLoader>(backing, keyStore);
break;
default:
return static_cast<jint>(skyline::loader::LoaderResult::ParsingError);
}
} catch (const skyline::loader::loader_exception &e) {
return static_cast<jint>(e.error);
} catch (const std::exception &e) {
return static_cast<jint>(skyline::loader::LoaderResult::ParsingError);
}
jclass clazz{env->GetObjectClass(thiz)};
jfieldID applicationNameField{env->GetFieldID(clazz, "applicationName", "Ljava/lang/String;")};
jfieldID applicationAuthorField{env->GetFieldID(clazz, "applicationAuthor", "Ljava/lang/String;")};
jfieldID rawIconField{env->GetFieldID(clazz, "rawIcon", "[B")};
if (loader->nacp) {
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auto language{skyline::language::GetApplicationLanguage(static_cast<skyline::language::SystemLanguage>(systemLanguage))};
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if (((1 << static_cast<skyline::u32>(language)) & loader->nacp->supportedTitleLanguages) == 0)
language = loader->nacp->GetFirstSupportedTitleLanguage();
env->SetObjectField(thiz, applicationNameField, env->NewStringUTF(loader->nacp->GetApplicationName(language).c_str()));
env->SetObjectField(thiz, applicationAuthorField, env->NewStringUTF(loader->nacp->GetApplicationPublisher(language).c_str()));
auto icon{loader->GetIcon(language)};
jbyteArray iconByteArray{env->NewByteArray(static_cast<jsize>(icon.size()))};
env->SetByteArrayRegion(iconByteArray, 0, static_cast<jsize>(icon.size()), reinterpret_cast<const jbyte *>(icon.data()));
env->SetObjectField(thiz, rawIconField, iconByteArray);
}
return static_cast<jint>(skyline::loader::LoaderResult::Success);
}