175 lines
5.1 KiB
C++
175 lines
5.1 KiB
C++
/* Copyright 2013 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "JavaUtils.h"
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#include "pathutils.h"
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#include "MultiMC.h"
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#include <QStringList>
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#include <QString>
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#include <QDir>
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#include <QMessageBox>
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#include <logger/QsLog.h>
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#include <gui/versionselectdialog.h>
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#include <setting.h>
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JavaUtils::JavaUtils()
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{
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}
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JavaVersionPtr JavaUtils::GetDefaultJava()
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{
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JavaVersionPtr javaVersion(new JavaVersion());
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javaVersion->id = "java";
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javaVersion->arch = "unknown";
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javaVersion->path = "java";
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javaVersion->recommended = false;
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return javaVersion;
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}
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#if WINDOWS
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QList<JavaVersionPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString keyName)
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{
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QList<JavaVersionPtr> javas;
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QString archType = "unknown";
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if(keyType == KEY_WOW64_64KEY) archType = "64";
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else if(keyType == KEY_WOW64_32KEY) archType = "32";
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HKEY jreKey;
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if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, keyName.toStdString().c_str(), 0, KEY_READ | keyType | KEY_ENUMERATE_SUB_KEYS, &jreKey) == ERROR_SUCCESS)
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{
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// Read the current type version from the registry.
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// This will be used to find any key that contains the JavaHome value.
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char *value = new char[0];
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DWORD valueSz = 0;
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if (RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE*)value, &valueSz) == ERROR_MORE_DATA)
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{
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value = new char[valueSz];
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RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE*)value, &valueSz);
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}
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QString recommended = value;
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TCHAR subKeyName[255];
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DWORD subKeyNameSize, numSubKeys, retCode;
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// Get the number of subkeys
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RegQueryInfoKey(jreKey, NULL, NULL, NULL, &numSubKeys, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
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// Iterate until RegEnumKeyEx fails
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if(numSubKeys > 0)
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{
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for(int i = 0; i < numSubKeys; i++)
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{
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subKeyNameSize = 255;
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retCode = RegEnumKeyEx(jreKey, i, subKeyName, &subKeyNameSize, NULL, NULL, NULL, NULL);
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if(retCode == ERROR_SUCCESS)
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{
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// Now open the registry key for the version that we just got.
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QString newKeyName = keyName + "\\" + subKeyName;
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HKEY newKey;
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if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, newKeyName.toStdString().c_str(), 0, KEY_READ | KEY_WOW64_64KEY, &newKey) == ERROR_SUCCESS)
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{
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// Read the JavaHome value to find where Java is installed.
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value = new char[0];
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valueSz = 0;
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if (RegQueryValueEx(newKey, "JavaHome", NULL, NULL, (BYTE*)value, &valueSz) == ERROR_MORE_DATA)
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{
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value = new char[valueSz];
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RegQueryValueEx(newKey, "JavaHome", NULL, NULL, (BYTE*)value, &valueSz);
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// Now, we construct the version object and add it to the list.
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JavaVersionPtr javaVersion(new JavaVersion());
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javaVersion->id = subKeyName;
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javaVersion->arch = archType;
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javaVersion->path = QDir(PathCombine(value, "bin")).absoluteFilePath("java.exe");
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javaVersion->recommended = (recommended == subKeyName);
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javas.append(javaVersion);
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}
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RegCloseKey(newKey);
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}
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}
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}
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}
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RegCloseKey(jreKey);
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}
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return javas;
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}
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QList<JavaVersionPtr> JavaUtils::FindJavaPaths()
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{
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QList<JavaVersionPtr> javas;
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QList<JavaVersionPtr> JRE64s = this->FindJavaFromRegistryKey(KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
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QList<JavaVersionPtr> JDK64s = this->FindJavaFromRegistryKey(KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
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QList<JavaVersionPtr> JRE32s = this->FindJavaFromRegistryKey(KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
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QList<JavaVersionPtr> JDK32s = this->FindJavaFromRegistryKey(KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
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javas.append(JRE64s);
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javas.append(JDK64s);
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javas.append(JRE32s);
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javas.append(JDK32s);
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if(javas.size() <= 0)
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{
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QLOG_WARN() << "Failed to find Java in the Windows registry - defaulting to \"java\"";
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javas.append(this->GetDefaultJava());
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return javas;
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}
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QLOG_INFO() << "Found the following Java installations (64 -> 32, JRE -> JDK): ";
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for(auto &java : javas)
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{
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QString sRec;
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if(java->recommended) sRec = "(Recommended)";
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QLOG_INFO() << java->id << java->arch << " at " << java->path << sRec;
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}
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return javas;
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}
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#elif OSX
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std::vector<java_install> JavaUtils::FindJavaPaths()
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{
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QLOG_INFO() << "OS X Java detection incomplete - defaulting to \"java\"";
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return this->GetDefaultJava();
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}
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#elif LINUX
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std::vector<java_install> JavaUtils::FindJavaPaths()
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{
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QLOG_INFO() << "Linux Java detection incomplete - defaulting to \"java\"";
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return this->GetDefaultJava();
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}
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#else
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std::vector<java_install> JavaUtils::FindJavaPaths()
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{
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QLOG_INFO() << "Unknown operating system build - defaulting to \"java\"";
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return this->GetDefaultJava();
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}
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#endif
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