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PrismLauncher/launcher/JavaDownloader.cpp
timoreo 6a5db12c6a
Apply some more suggestions from @flowln 
Co-authored-by: flow <flowlnlnln@gmail.com>
Signed-off-by: timoreo <contact@timoreo.fr>
2022-10-24 15:00:33 +02:00

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#include "JavaDownloader.h"
#include <QMessageBox>
#include <QPushButton>
#include <memory>
#include <utility>
#include "Application.h"
#include "FileSystem.h"
#include "InstanceList.h"
#include "Json.h"
#include "MMCZip.h"
#include "SysInfo.h"
#include "net/ChecksumValidator.h"
#include "net/NetJob.h"
#include "ui/dialogs/ProgressDialog.h"
// Quick & dirty struct to store files
struct File {
QString path;
QString url;
QByteArray hash;
bool isExec;
};
void JavaDownloader::executeTask()
{
auto OS = m_OS;
auto isLegacy = m_isLegacy;
downloadMojangJavaList(OS, isLegacy);
}
void JavaDownloader::downloadMojangJavaList(const QString& OS, bool isLegacy)
{
auto netJob = new NetJob(QString("JRE::QueryVersions"), APPLICATION->network());
auto response = new QByteArray();
setStatus(tr("Querying mojang meta"));
netJob->addNetAction(Net::Download::makeByteArray(
QUrl("https://piston-meta.mojang.com/v1/products/java-runtime/2ec0cc96c44e5a76b9c8b7c39df7210883d12871/all.json"), response));
connect(this, &Task::aborted, [isLegacy] {
QDir(FS::PathCombine(QCoreApplication::applicationDirPath(), "java", (isLegacy ? "java-legacy" : "java-current")))
.removeRecursively();
});
connect(netJob, &NetJob::finished, [netJob, response, this] {
// delete so that it's not called on a deleted job
disconnect(this, &Task::aborted, netJob, &NetJob::abort);
netJob->deleteLater();
delete response;
});
connect(netJob, &NetJob::progress, this, &JavaDownloader::progress);
connect(netJob, &NetJob::failed, this, &JavaDownloader::emitFailed);
connect(this, &Task::aborted, netJob, &NetJob::abort);
connect(netJob, &NetJob::succeeded, [response, OS, isLegacy, this, netJob] {
QJsonParseError parse_error{};
QJsonDocument doc = QJsonDocument::fromJson(*response, &parse_error);
if (parse_error.error != QJsonParseError::NoError) {
qWarning() << "Error while parsing JSON response at " << parse_error.offset << " reason: " << parse_error.errorString();
qWarning() << *response;
return;
}
auto versionArray = Json::ensureArray(Json::ensureObject(doc.object(), OS), isLegacy ? "jre-legacy" : "java-runtime-gamma");
if (!versionArray.empty()) {
parseMojangManifest(isLegacy, versionArray);
} else {
// mojang does not have a JRE for us, let's get azul zulu
downloadAzulMeta(OS, isLegacy, netJob);
}
});
netJob->start();
}
void JavaDownloader::parseMojangManifest(bool isLegacy, const QJsonArray& versionArray)
{
setStatus(tr("Downloading Java from Mojang"));
auto url = Json::ensureString(Json::ensureObject(Json::ensureObject(versionArray[0]), "manifest"), "url");
auto download = new NetJob(QString("JRE::DownloadJava"), APPLICATION->network());
auto files = new QByteArray();
download->addNetAction(Net::Download::makeByteArray(QUrl(url), files));
connect(download, &NetJob::finished, [download, files, this] {
disconnect(this, &Task::aborted, download, &NetJob::abort);
download->deleteLater();
delete files;
});
connect(download, &NetJob::progress, this, &JavaDownloader::progress);
connect(download, &NetJob::failed, this, &JavaDownloader::emitFailed);
connect(this, &Task::aborted, download, &NetJob::abort);
connect(download, &NetJob::succeeded, [files, isLegacy, this] {
QJsonParseError parse_error{};
QJsonDocument doc = QJsonDocument::fromJson(*files, &parse_error);
if (parse_error.error != QJsonParseError::NoError) {
qWarning() << "Error while parsing JSON response at " << parse_error.offset << " reason: " << parse_error.errorString();
qWarning() << *files;
return;
}
downloadMojangJava(isLegacy, doc);
});
download->start();
}
void JavaDownloader::downloadMojangJava(bool isLegacy, const QJsonDocument& doc)
{ // valid json doc, begin making jre spot
auto output = FS::PathCombine(QCoreApplication::applicationDirPath(), QString("java"), (isLegacy ? "java-legacy" : "java-current"));
FS::ensureFolderPathExists(output);
std::vector<File> toDownload;
auto list = Json::ensureObject(Json::ensureObject(doc.object()), "files");
for (const auto& paths : list.keys()) {
auto file = FS::PathCombine(output, paths);
const QJsonObject& meta = Json::ensureObject(list, paths);
auto type = Json::ensureString(meta, "type");
if (type == "directory") {
FS::ensureFolderPathExists(file);
} else if (type == "link") {
// this is linux only !
auto path = Json::ensureString(meta, "target");
if (!path.isEmpty()) {
auto target = FS::PathCombine(file, "../" + path);
QFile(target).link(file);
}
} else if (type == "file") {
// TODO download compressed version if it exists ?
auto raw = Json::ensureObject(Json::ensureObject(meta, "downloads"), "raw");
auto isExec = Json::ensureBoolean(meta, "executable", false);
auto url = Json::ensureString(raw, "url");
if (!url.isEmpty() && QUrl(url).isValid()) {
auto f = File{ file, url, QByteArray::fromHex(Json::ensureString(raw, "sha1").toLatin1()), isExec };
toDownload.push_back(f);
}
}
}
auto elementDownload = new NetJob("JRE::FileDownload", APPLICATION->network());
for (const auto& file : toDownload) {
auto dl = Net::Download::makeFile(file.url, file.path);
if (!file.hash.isEmpty()) {
dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, file.hash));
}
if (file.isExec) {
connect(dl.get(), &Net::Download::succeeded,
[file] { QFile(file.path).setPermissions(QFile(file.path).permissions() | QFileDevice::Permissions(0x1111)); });
}
elementDownload->addNetAction(dl);
}
connect(elementDownload, &NetJob::finished, [elementDownload, this] {
disconnect(this, &Task::aborted, elementDownload, &NetJob::abort);
elementDownload->deleteLater();
});
connect(elementDownload, &NetJob::progress, this, &JavaDownloader::progress);
connect(elementDownload, &NetJob::failed, this, &JavaDownloader::emitFailed);
connect(this, &Task::aborted, elementDownload, &NetJob::abort);
connect(elementDownload, &NetJob::succeeded, [this] { emitSucceeded(); });
elementDownload->start();
}
void JavaDownloader::downloadAzulMeta(const QString& OS, bool isLegacy, const NetJob* netJob)
{
setStatus(tr("Querying Azul meta"));
QString javaVersion = isLegacy ? QString("8.0") : QString("17.0");
QString azulOS;
QString arch;
QString bitness;
mojangOStoAzul(OS, azulOS, arch, bitness);
auto metaResponse = new QByteArray();
auto downloadJob = new NetJob(QString("JRE::QueryAzulMeta"), APPLICATION->network());
downloadJob->addNetAction(
Net::Download::makeByteArray(QString("https://api.azul.com/zulu/download/community/v1.0/bundles/?"
"java_version=%1"
"&os=%2"
"&arch=%3"
"&hw_bitness=%4"
"&ext=zip" // as a zip for all os, even linux NOTE !! Linux ARM is .deb or .tar.gz only !!
"&bundle_type=jre" // jre only
"&latest=true" // only get the one latest entry
)
.arg(javaVersion, azulOS, arch, bitness),
metaResponse));
connect(downloadJob, &NetJob::finished, [downloadJob, metaResponse, this] {
disconnect(this, &Task::aborted, downloadJob, &NetJob::abort);
downloadJob->deleteLater();
delete metaResponse;
});
connect(this, &Task::aborted, downloadJob, &NetJob::abort);
connect(netJob, &NetJob::failed, this, &JavaDownloader::emitFailed);
connect(downloadJob, &NetJob::progress, this, &JavaDownloader::progress);
connect(downloadJob, &NetJob::succeeded, [metaResponse, isLegacy, this] {
QJsonParseError parse_error{};
QJsonDocument doc = QJsonDocument::fromJson(*metaResponse, &parse_error);
if (parse_error.error != QJsonParseError::NoError) {
qWarning() << "Error while parsing JSON response at " << parse_error.offset << " reason: " << parse_error.errorString();
qWarning() << *metaResponse;
return;
}
auto array = Json::ensureArray(doc.array());
if (!array.empty()) {
downloadAzulJava(isLegacy, array);
} else {
emitFailed(tr("No suitable JRE found"));
}
});
downloadJob->start();
}
void JavaDownloader::mojangOStoAzul(const QString& OS, QString& azulOS, QString& arch, QString& bitness)
{
if (OS == "mac-os-arm64") {
// macos arm64
azulOS = "macos";
arch = "arm";
bitness = "64";
} else if (OS == "linux-arm64") {
// linux arm64
azulOS = "linux";
arch = "arm";
bitness = "64";
} else if (OS == "linux-arm") {
// linux arm (32)
azulOS = "linux";
arch = "arm";
bitness = "32";
} else if (OS == "linux") {
// linux x86 64 (used for debugging, should never reach here)
azulOS = "linux";
arch = "x86";
bitness = "64";
}
}
void JavaDownloader::downloadAzulJava(bool isLegacy, const QJsonArray& array)
{ // JRE found ! download the zip
setStatus(tr("Downloading Java from Azul"));
auto downloadURL = QUrl(array[0].toObject()["url"].toString());
auto download = new NetJob(QString("JRE::DownloadJava"), APPLICATION->network());
auto path = APPLICATION->instances()->getStagedInstancePath();
auto temp = FS::PathCombine(path, "azulJRE.zip");
download->addNetAction(Net::Download::makeFile(downloadURL, temp));
connect(download, &NetJob::finished, [download, this] {
disconnect(this, &Task::aborted, download, &NetJob::abort);
download->deleteLater();
});
connect(download, &NetJob::aborted, [path] { APPLICATION->instances()->destroyStagingPath(path); });
connect(download, &NetJob::progress, this, &JavaDownloader::progress);
connect(download, &NetJob::failed, this, [this, path](QString reason) {
APPLICATION->instances()->destroyStagingPath(path);
emitFailed(std::move(reason));
});
connect(this, &Task::aborted, download, &NetJob::abort);
connect(download, &NetJob::succeeded, [isLegacy, temp, downloadURL, path, this] {
setStatus(tr("Extracting java"));
auto output = FS::PathCombine(QCoreApplication::applicationDirPath(), "java", isLegacy ? "java-legacy" : "java-current");
// This should do all of the extracting and creating folders
MMCZip::extractDir(temp, downloadURL.fileName().chopped(4), output);
APPLICATION->instances()->destroyStagingPath(path);
emitSucceeded();
});
download->start();
}
void JavaDownloader::showPrompts(QWidget* parent)
{
QString sys = SysInfo::currentSystem();
if (sys == "osx") {
sys = "mac-os";
}
QString arch = SysInfo::useQTForArch();
QString version;
if (sys == "windows") {
if (arch == "x86_64") {
version = "windows-x64";
} else if (arch == "i386") {
version = "windows-x86";
} else {
// Unknown, maybe arm, appending arch for downloader
version = "windows-" + arch;
}
} else if (sys == "mac-os") {
if (arch == "arm64") {
version = "mac-os-arm64";
} else {
version = "mac-os";
}
} else if (sys == "linux") {
if (arch == "x86_64") {
version = "linux";
} else {
// will work for i386, and arm(64)
version = "linux-" + arch;
}
} else {
// ? ? ? ? ? unknown os, at least it won't have a java version on mojang or azul, display warning
QMessageBox::warning(parent, tr("Unknown OS"),
tr("The OS you are running is not supported by Mojang or Azul. Please install Java manually."));
return;
}
// Selection using QMessageBox for java 8 or 17
QMessageBox box(
QMessageBox::Icon::Question, tr("Java version"),
tr("Do you want to download Java version 8 or 17?\n Java 8 is recommended for older Minecraft versions, below 1.17\n Java 17 "
"is recommended for newer Minecraft versions, starting from 1.17"),
QMessageBox::NoButton, parent);
auto yes = box.addButton("Java 17", QMessageBox::AcceptRole);
auto no = box.addButton("Java 8", QMessageBox::AcceptRole);
auto both = box.addButton(tr("Download both"), QMessageBox::AcceptRole);
auto cancel = box.addButton(QMessageBox::Cancel);
if (QFileInfo::exists(FS::PathCombine(QCoreApplication::applicationDirPath(), QString("java"), "java-legacy"))) {
no->setEnabled(false);
}
if (QFileInfo::exists(FS::PathCombine(QCoreApplication::applicationDirPath(), QString("java"), "java-current"))) {
yes->setEnabled(false);
}
if (!yes->isEnabled() || !no->isEnabled()) {
both->setEnabled(false);
}
if (!yes->isEnabled() && !no->isEnabled()) {
QMessageBox::information(parent, tr("Already installed!"), tr("Both versions of Java are already installed!"));
return;
}
box.exec();
if (box.clickedButton() == nullptr || box.clickedButton() == cancel) {
return;
}
bool isLegacy = box.clickedButton() == no;
auto down = new JavaDownloader(isLegacy, version);
ProgressDialog dialog(parent);
dialog.setSkipButton(true, tr("Abort"));
bool finished_successfully = dialog.execWithTask(down);
// Run another download task for the other option as well!
if (finished_successfully && box.clickedButton() == both) {
auto dwn = new JavaDownloader(false, version);
ProgressDialog dg(parent);
dg.setSkipButton(true, tr("Abort"));
dg.execWithTask(dwn);
}
}
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