pollymc/launcher/java/JavaUtils.cpp

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// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2013-2021 MultiMC Contributors
*
* 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 <QStringList>
#include <QString>
#include <QDir>
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#include <QStringList>
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#include <settings/Setting.h>
#include <QDebug>
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#include "java/JavaUtils.h"
#include "java/JavaInstallList.h"
#include "FileSystem.h"
#include "Application.h"
#define IBUS "@im=ibus"
JavaUtils::JavaUtils()
{
}
QString stripVariableEntries(QString name, QString target, QString remove)
{
char delimiter = ':';
#ifdef Q_OS_WIN32
delimiter = ';';
#endif
auto targetItems = target.split(delimiter);
auto toRemove = remove.split(delimiter);
for (QString item : toRemove) {
bool removed = targetItems.removeOne(item);
if (!removed)
qWarning() << "Entry" << item
<< "could not be stripped from variable" << name;
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}
return targetItems.join(delimiter);
}
QProcessEnvironment CleanEnviroment()
{
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// prepare the process environment
QProcessEnvironment rawenv = QProcessEnvironment::systemEnvironment();
QProcessEnvironment env;
QStringList ignored =
{
"JAVA_ARGS",
"CLASSPATH",
"CONFIGPATH",
"JAVA_HOME",
"JRE_HOME",
"_JAVA_OPTIONS",
"JAVA_OPTIONS",
"JAVA_TOOL_OPTIONS"
};
QStringList stripped =
{
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD)
"LD_LIBRARY_PATH",
"LD_PRELOAD",
#endif
"QT_PLUGIN_PATH",
"QT_FONTPATH"
};
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for(auto key: rawenv.keys())
{
auto value = rawenv.value(key);
// filter out dangerous java crap
if(ignored.contains(key))
{
qDebug() << "Env: ignoring" << key << value;
continue;
}
// These are used to strip the original variables
// If there is "LD_LIBRARY_PATH" and "LAUNCHER_LD_LIBRARY_PATH", we want to
// remove all values in "LAUNCHER_LD_LIBRARY_PATH" from "LD_LIBRARY_PATH"
if(key.startsWith("LAUNCHER_"))
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{
qDebug() << "Env: ignoring" << key << value;
continue;
}
if(stripped.contains(key))
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{
QString newValue = stripVariableEntries(key, value, rawenv.value("LAUNCHER_" + key));
qDebug() << "Env: stripped" << key << value << "to" << newValue;
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}
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD)
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// Strip IBus
// IBus is a Linux IME framework. For some reason, it breaks MC?
if (key == "XMODIFIERS" && value.contains(IBUS))
{
QString save = value;
value.replace(IBUS, "");
qDebug() << "Env: stripped" << IBUS << "from" << save << ":" << value;
}
#endif
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// qDebug() << "Env: " << key << value;
env.insert(key, value);
}
#ifdef Q_OS_LINUX
// HACK: Workaround for QTBUG-42500
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if(!env.contains("LD_LIBRARY_PATH"))
{
env.insert("LD_LIBRARY_PATH", "");
}
#endif
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return env;
}
JavaInstallPtr JavaUtils::MakeJavaPtr(QString path, QString id, QString arch)
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{
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JavaInstallPtr javaVersion(new JavaInstall());
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javaVersion->id = id;
javaVersion->arch = arch;
javaVersion->path = path;
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return javaVersion;
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}
JavaInstallPtr JavaUtils::GetDefaultJava()
{
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JavaInstallPtr javaVersion(new JavaInstall());
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javaVersion->id = "java";
javaVersion->arch = "unknown";
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#if defined(Q_OS_WIN32)
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javaVersion->path = "javaw";
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#else
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javaVersion->path = "java";
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#endif
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return javaVersion;
}
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QStringList addJavasFromEnv(QList<QString> javas)
{
QByteArray env = qgetenv("POLYMC_JAVA_PATHS");
#if defined(Q_OS_WIN32)
QList<QString> javaPaths = QString::fromLocal8Bit(env).replace("\\", "/").split(QLatin1String(";"));
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#else
QList<QString> javaPaths = QString::fromLocal8Bit(env).split(QLatin1String(":"));
#endif
for(QString i : javaPaths)
{
javas.append(i);
};
return javas;
}
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#if defined(Q_OS_WIN32)
QList<JavaInstallPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString keyName, QString keyJavaDir, QString subkeySuffix)
{
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QList<JavaInstallPtr> javas;
QString archType = "unknown";
if (keyType == KEY_WOW64_64KEY)
archType = "64";
else if (keyType == KEY_WOW64_32KEY)
archType = "32";
HKEY jreKey;
if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, keyName.toStdWString().c_str(), 0,
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KEY_READ | keyType | KEY_ENUMERATE_SUB_KEYS, &jreKey) == ERROR_SUCCESS)
{
// Read the current type version from the registry.
// This will be used to find any key that contains the JavaHome value.
TCHAR subKeyName[255];
DWORD subKeyNameSize, numSubKeys, retCode;
// Get the number of subkeys
RegQueryInfoKeyW(jreKey, NULL, NULL, NULL, &numSubKeys, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL);
// Iterate until RegEnumKeyEx fails
if (numSubKeys > 0)
{
for (DWORD i = 0; i < numSubKeys; i++)
{
subKeyNameSize = 255;
retCode = RegEnumKeyExW(jreKey, i, subKeyName, &subKeyNameSize, NULL, NULL, NULL,
NULL);
QString newSubkeyName = QString::fromWCharArray(subKeyName);
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if (retCode == ERROR_SUCCESS)
{
// Now open the registry key for the version that we just got.
QString newKeyName = keyName + "\\" + newSubkeyName + subkeySuffix;
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HKEY newKey;
if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, newKeyName.toStdWString().c_str(), 0,
KEY_READ | KEY_WOW64_64KEY, &newKey) == ERROR_SUCCESS)
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{
// Read the JavaHome value to find where Java is installed.
TCHAR *value = NULL;
DWORD valueSz = 0;
if (RegQueryValueExW(newKey, keyJavaDir.toStdWString().c_str(), NULL, NULL, (BYTE *)value,
&valueSz) == ERROR_MORE_DATA)
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{
value = new TCHAR[valueSz];
RegQueryValueExW(newKey, keyJavaDir.toStdWString().c_str(), NULL, NULL, (BYTE *)value,
&valueSz);
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QString newValue = QString::fromWCharArray(value);
delete [] value;
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// Now, we construct the version object and add it to the list.
JavaInstallPtr javaVersion(new JavaInstall());
javaVersion->id = newSubkeyName;
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javaVersion->arch = archType;
javaVersion->path =
QDir(FS::PathCombine(newValue, "bin")).absoluteFilePath("javaw.exe");
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javas.append(javaVersion);
}
RegCloseKey(newKey);
}
}
}
}
RegCloseKey(jreKey);
}
return javas;
}
QList<QString> JavaUtils::FindJavaPaths()
{
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QList<JavaInstallPtr> java_candidates;
// Oracle
QList<JavaInstallPtr> JRE64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment", "JavaHome");
QList<JavaInstallPtr> JDK64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Development Kit", "JavaHome");
QList<JavaInstallPtr> JRE32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment", "JavaHome");
QList<JavaInstallPtr> JDK32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Development Kit", "JavaHome");
// Oracle for Java 9 and newer
QList<JavaInstallPtr> NEWJRE64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\JRE", "JavaHome");
QList<JavaInstallPtr> NEWJDK64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\JDK", "JavaHome");
QList<JavaInstallPtr> NEWJRE32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\JRE", "JavaHome");
QList<JavaInstallPtr> NEWJDK32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\JDK", "JavaHome");
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// AdoptOpenJDK
QList<JavaInstallPtr> ADOPTOPENJRE32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\AdoptOpenJDK\\JRE", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> ADOPTOPENJRE64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\AdoptOpenJDK\\JRE", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> ADOPTOPENJDK32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\AdoptOpenJDK\\JDK", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> ADOPTOPENJDK64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\AdoptOpenJDK\\JDK", "Path", "\\hotspot\\MSI");
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// Eclipse Foundation
QList<JavaInstallPtr> FOUNDATIONJDK32s = this->FindJavaFromRegistryKey(
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KEY_WOW64_32KEY, "SOFTWARE\\Eclipse Foundation\\JDK", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> FOUNDATIONJDK64s = this->FindJavaFromRegistryKey(
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KEY_WOW64_64KEY, "SOFTWARE\\Eclipse Foundation\\JDK", "Path", "\\hotspot\\MSI");
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// Eclipse Adoptium
QList<JavaInstallPtr> ADOPTIUMJRE32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\Eclipse Adoptium\\JRE", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> ADOPTIUMJRE64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\Eclipse Adoptium\\JRE", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> ADOPTIUMJDK32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\Eclipse Adoptium\\JDK", "Path", "\\hotspot\\MSI");
QList<JavaInstallPtr> ADOPTIUMJDK64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\Eclipse Adoptium\\JDK", "Path", "\\hotspot\\MSI");
// Microsoft
QList<JavaInstallPtr> MICROSOFTJDK64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\Microsoft\\JDK", "Path", "\\hotspot\\MSI");
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// Azul Zulu
QList<JavaInstallPtr> ZULU64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\Azul Systems\\Zulu", "InstallationPath");
QList<JavaInstallPtr> ZULU32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\Azul Systems\\Zulu", "InstallationPath");
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// BellSoft Liberica
QList<JavaInstallPtr> LIBERICA64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\BellSoft\\Liberica", "InstallationPath");
QList<JavaInstallPtr> LIBERICA32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\BellSoft\\Liberica", "InstallationPath");
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// List x64 before x86
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java_candidates.append(JRE64s);
java_candidates.append(NEWJRE64s);
java_candidates.append(ADOPTOPENJRE64s);
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java_candidates.append(ADOPTIUMJRE64s);
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java_candidates.append(MakeJavaPtr("C:/Program Files/Java/jre8/bin/javaw.exe"));
java_candidates.append(MakeJavaPtr("C:/Program Files/Java/jre7/bin/javaw.exe"));
java_candidates.append(MakeJavaPtr("C:/Program Files/Java/jre6/bin/javaw.exe"));
java_candidates.append(JDK64s);
java_candidates.append(NEWJDK64s);
java_candidates.append(ADOPTOPENJDK64s);
java_candidates.append(FOUNDATIONJDK64s);
java_candidates.append(ADOPTIUMJDK64s);
java_candidates.append(MICROSOFTJDK64s);
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java_candidates.append(ZULU64s);
java_candidates.append(LIBERICA64s);
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java_candidates.append(JRE32s);
java_candidates.append(NEWJRE32s);
java_candidates.append(ADOPTOPENJRE32s);
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java_candidates.append(ADOPTIUMJRE32s);
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java_candidates.append(MakeJavaPtr("C:/Program Files (x86)/Java/jre8/bin/javaw.exe"));
java_candidates.append(MakeJavaPtr("C:/Program Files (x86)/Java/jre7/bin/javaw.exe"));
java_candidates.append(MakeJavaPtr("C:/Program Files (x86)/Java/jre6/bin/javaw.exe"));
java_candidates.append(JDK32s);
java_candidates.append(NEWJDK32s);
java_candidates.append(ADOPTOPENJDK32s);
java_candidates.append(FOUNDATIONJDK32s);
java_candidates.append(ADOPTIUMJDK32s);
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java_candidates.append(ZULU32s);
java_candidates.append(LIBERICA32s);
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java_candidates.append(MakeJavaPtr(this->GetDefaultJava()->path));
QList<QString> candidates;
for(JavaInstallPtr java_candidate : java_candidates)
{
if(!candidates.contains(java_candidate->path))
{
candidates.append(java_candidate->path);
}
}
return addJavasFromEnv(candidates);
}
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#elif defined(Q_OS_MAC)
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QList<QString> JavaUtils::FindJavaPaths()
{
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QList<QString> javas;
javas.append(this->GetDefaultJava()->path);
javas.append("/Applications/Xcode.app/Contents/Applications/Application Loader.app/Contents/MacOS/itms/java/bin/java");
javas.append("/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java");
javas.append("/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java");
QDir libraryJVMDir("/Library/Java/JavaVirtualMachines/");
QStringList libraryJVMJavas = libraryJVMDir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
foreach (const QString &java, libraryJVMJavas) {
javas.append(libraryJVMDir.absolutePath() + "/" + java + "/Contents/Home/bin/java");
javas.append(libraryJVMDir.absolutePath() + "/" + java + "/Contents/Home/jre/bin/java");
}
QDir systemLibraryJVMDir("/System/Library/Java/JavaVirtualMachines/");
QStringList systemLibraryJVMJavas = systemLibraryJVMDir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
foreach (const QString &java, systemLibraryJVMJavas) {
javas.append(systemLibraryJVMDir.absolutePath() + "/" + java + "/Contents/Home/bin/java");
javas.append(systemLibraryJVMDir.absolutePath() + "/" + java + "/Contents/Commands/java");
}
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return addJavasFromEnv(javas);
}
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#elif defined(Q_OS_LINUX)
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QList<QString> JavaUtils::FindJavaPaths()
{
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qDebug() << "Linux Java detection incomplete - defaulting to \"java\"";
QList<QString> javas;
javas.append(this->GetDefaultJava()->path);
auto scanJavaDir = [&](const QString & dirPath)
{
QDir dir(dirPath);
if(!dir.exists())
return;
auto entries = dir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot | QDir::NoSymLinks);
for(auto & entry: entries)
{
QString prefix;
if(entry.isAbsolute())
{
prefix = entry.absoluteFilePath();
}
else
{
prefix = entry.filePath();
}
javas.append(FS::PathCombine(prefix, "jre/bin/java"));
javas.append(FS::PathCombine(prefix, "bin/java"));
}
};
// oracle RPMs
scanJavaDir("/usr/java");
// general locations used by distro packaging
scanJavaDir("/usr/lib/jvm");
scanJavaDir("/usr/lib64/jvm");
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scanJavaDir("/usr/lib32/jvm");
// javas stored in PolyMC's folder
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scanJavaDir("java");
// manually installed JDKs in /opt
scanJavaDir("/opt/jdk");
scanJavaDir("/opt/jdks");
// flatpak
scanJavaDir("/app/jdk");
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return addJavasFromEnv(javas);
}
#else
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QList<QString> JavaUtils::FindJavaPaths()
{
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qDebug() << "Unknown operating system build - defaulting to \"java\"";
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QList<QString> javas;
javas.append(this->GetDefaultJava()->path);
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return addJavasFromEnv(javas);
}
#endif
QString JavaUtils::getJavaCheckPath()
{
return APPLICATION->getJarPath("JavaCheck.jar");
}