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/* Copyright 2013-2017 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>
#include <QStringList>
#include <settings/Setting.h>
#include <QDebug>
#include "java/JavaUtils.h"
#include "java/JavaInstallList.h"
#include "FileSystem.h"
JavaUtils::JavaUtils()
{
}
JavaInstallPtr JavaUtils::MakeJavaPtr(QString path, QString id, QString arch)
{
JavaInstallPtr javaVersion(new JavaInstall());
javaVersion->id = id;
javaVersion->arch = arch;
javaVersion->path = path;
return javaVersion;
}
JavaInstallPtr JavaUtils::GetDefaultJava()
{
JavaInstallPtr javaVersion(new JavaInstall());
javaVersion->id = "java";
javaVersion->arch = "unknown";
#if defined(Q_OS_WIN32)
javaVersion->path = "javaw";
#else
javaVersion->path = "java";
#endif
return javaVersion;
}
#if defined(Q_OS_WIN32)
QList<JavaInstallPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString keyName)
{
QList<JavaInstallPtr> javas;
QString archType = "unknown";
if (keyType == KEY_WOW64_64KEY)
archType = "64";
else if (keyType == KEY_WOW64_32KEY)
archType = "32";
HKEY jreKey;
if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, keyName.toStdString().c_str(), 0,
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.
char *value = new char[0];
DWORD valueSz = 0;
if (RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE *)value, &valueSz) ==
ERROR_MORE_DATA)
{
value = new char[valueSz];
RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE *)value, &valueSz);
}
QString recommended = value;
TCHAR subKeyName[255];
DWORD subKeyNameSize, numSubKeys, retCode;
// Get the number of subkeys
RegQueryInfoKey(jreKey, NULL, NULL, NULL, &numSubKeys, NULL, NULL, NULL, NULL, NULL,
NULL, NULL);
// Iterate until RegEnumKeyEx fails
if (numSubKeys > 0)
{
for (DWORD i = 0; i < numSubKeys; i++)
{
subKeyNameSize = 255;
retCode = RegEnumKeyEx(jreKey, i, subKeyName, &subKeyNameSize, NULL, NULL, NULL,
NULL);
if (retCode == ERROR_SUCCESS)
{
// Now open the registry key for the version that we just got.
QString newKeyName = keyName + "\\" + subKeyName;
HKEY newKey;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, newKeyName.toStdString().c_str(), 0,
KEY_READ | KEY_WOW64_64KEY, &newKey) == ERROR_SUCCESS)
{
// Read the JavaHome value to find where Java is installed.
value = new char[0];
valueSz = 0;
if (RegQueryValueEx(newKey, "JavaHome", NULL, NULL, (BYTE *)value,
&valueSz) == ERROR_MORE_DATA)
{
value = new char[valueSz];
RegQueryValueEx(newKey, "JavaHome", NULL, NULL, (BYTE *)value,
&valueSz);
// Now, we construct the version object and add it to the list.
JavaInstallPtr javaVersion(new JavaInstall());
javaVersion->id = subKeyName;
javaVersion->arch = archType;
javaVersion->path =
QDir(FS::PathCombine(value, "bin")).absoluteFilePath("javaw.exe");
javas.append(javaVersion);
}
RegCloseKey(newKey);
}
}
}
}
RegCloseKey(jreKey);
}
return javas;
}
QList<QString> JavaUtils::FindJavaPaths()
{
QList<JavaInstallPtr> java_candidates;
QList<JavaInstallPtr> JRE64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
QList<JavaInstallPtr> JDK64s = this->FindJavaFromRegistryKey(
KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
QList<JavaInstallPtr> JRE32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
QList<JavaInstallPtr> JDK32s = this->FindJavaFromRegistryKey(
KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
java_candidates.append(JRE64s);
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(JRE32s);
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(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 candidates;
}
#elif defined(Q_OS_MAC)
QList<QString> JavaUtils::FindJavaPaths()
{
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");
}
return javas;
}
#elif defined(Q_OS_LINUX)
QList<QString> JavaUtils::FindJavaPaths()
{
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/lib32/jvm");
// javas stored in MultiMC's folder
scanJavaDir("java");
return javas;
}
#else
QList<QString> JavaUtils::FindJavaPaths()
{
qDebug() << "Unknown operating system build - defaulting to \"java\"";
QList<QString> javas;
javas.append(this->GetDefaultJava()->path);
return javas;
}
#endif
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