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First draft of multiple Java installation detection on Windows

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This commit is contained in:
Sky 2013-10-06 19:54:52 +01:00
parent d5e4802ade
commit 17c98655f8
4 changed files with 123 additions and 50 deletions
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4
gui/settingsdialog.cpp
View File

@ -185,9 +185,9 @@ void SettingsDialog::loadSettings(SettingsObject *s)
void SettingsDialog::on_pushButton_clicked()
{
JavaUtils jut;
QStringList paths = jut.FindJavaPath();
auto javas = jut.FindJavaPaths();
ui->javaPathTextBox->setText(paths.at(0));
ui->javaPathTextBox->setText(std::get<JI_PATH>(javas.at(0)));
}
void SettingsDialog::on_btnBrowse_clicked()

18
gui/settingsdialog.ui
View File

@ -374,6 +374,12 @@
<layout class="QGridLayout" name="gridLayout_3">
<item row="0" column="0">
<widget class="QLabel" name="labelJavaPath">
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Preferred">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>Java path:</string>
</property>
@ -381,6 +387,12 @@
</item>
<item row="2" column="0">
<widget class="QLabel" name="labelJVMArgs">
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Preferred">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>JVM arguments:</string>
</property>
@ -402,9 +414,6 @@
<item row="0" column="1" colspan="3">
<widget class="QLineEdit" name="javaPathTextBox"/>
</item>
<item row="2" column="1" colspan="3">
<widget class="QLineEdit" name="jvmArgsTextBox"/>
</item>
<item row="1" column="2">
<widget class="QPushButton" name="pushButton">
<property name="sizePolicy">
@ -418,6 +427,9 @@
</property>
</widget>
</item>
<item row="2" column="1" colspan="3">
<widget class="QLineEdit" name="jvmArgsTextBox"/>
</item>
</layout>
</widget>
</item>

131
logic/JavaUtils.cpp
View File

@ -14,7 +14,6 @@
*/
#include "JavaUtils.h"
#include "osutils.h"
#include "pathutils.h"
#include <QStringList>
@ -22,27 +21,33 @@
#include <QDir>
#include <logger/QsLog.h>
#if WINDOWS
#include <windows.h>
#endif
JavaUtils::JavaUtils()
{
}
#if WINDOWS
QStringList JavaUtils::FindJavaPath()
std::vector<java_install> JavaUtils::GetDefaultJava()
{
QStringList paths;
std::vector<java_install> javas;
javas.push_back(std::make_tuple("java", "unknown", "java", false));
return javas;
}
#if WINDOWS
std::vector<java_install> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString keyName)
{
std::vector<java_install> javas;
QString archType = "unknown";
if(keyType == KEY_WOW64_64KEY) archType = "64";
else if(keyType == KEY_WOW64_32KEY) archType = "32";
HKEY jreKey;
QString jreKeyName = "SOFTWARE\\JavaSoft\\Java Runtime Environment";
if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, jreKeyName.toStdString().c_str(), 0, KEY_READ | KEY_WOW64_64KEY, &jreKey) == ERROR_SUCCESS)
if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, keyName.toStdString().c_str(), 0, KEY_READ | keyType | KEY_ENUMERATE_SUB_KEYS, &jreKey) == ERROR_SUCCESS)
{
// Read the current JRE version from the registry.
// This will be used to find the key that contains the JavaHome value.
// 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)
@ -51,64 +56,102 @@ QStringList JavaUtils::FindJavaPath()
RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE*)value, &valueSz);
}
RegCloseKey(jreKey);
QString recommended = value;
// Now open the registry key for the JRE version that we just got.
jreKeyName.append("\\").append(value);
if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, jreKeyName.toStdString().c_str(), 0, KEY_READ | KEY_WOW64_64KEY, &jreKey) == ERROR_SUCCESS)
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)
{
// Read the JavaHome value to find where Java is installed.
value = new char[0];
valueSz = 0;
if (RegQueryValueExA(jreKey, "JavaHome", NULL, NULL, (BYTE*)value, &valueSz) == ERROR_MORE_DATA)
for(int i = 0; i < numSubKeys; i++)
{
value = new char[valueSz];
RegQueryValueExA(jreKey, "JavaHome", NULL, NULL, (BYTE*)value, &valueSz);
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;
paths << QDir(PathCombine(value, "bin")).absoluteFilePath("java.exe");
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);
javas.push_back(std::make_tuple(subKeyName, archType, QDir(PathCombine(value, "bin")).absoluteFilePath("java.exe"), (recommended == subKeyName)));
}
RegCloseKey(newKey);
}
}
}
RegCloseKey(jreKey);
}
RegCloseKey(jreKey);
}
if(paths.length() <= 0)
return javas;
}
std::vector<java_install> JavaUtils::FindJavaPaths()
{
std::vector<java_install> JRE64s = this->FindJavaFromRegistryKey(KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
std::vector<java_install> JDK64s = this->FindJavaFromRegistryKey(KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
std::vector<java_install> JRE32s = this->FindJavaFromRegistryKey(KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
std::vector<java_install> JDK32s = this->FindJavaFromRegistryKey(KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
std::vector<java_install> javas;
javas.insert(javas.end(), JRE64s.begin(), JRE64s.end());
javas.insert(javas.end(), JDK64s.begin(), JDK64s.end());
javas.insert(javas.end(), JRE32s.begin(), JRE32s.end());
javas.insert(javas.end(), JDK32s.begin(), JDK32s.end());
if(javas.size() <= 0)
{
QLOG_WARN() << "Failed to find Java in the Windows registry - defaulting to \"java\"";
paths << "java";
return this->GetDefaultJava();
}
return paths;
QLOG_INFO() << "Found the following Java installations (64 -> 32, JRE -> JDK): ";
for(auto &java : javas)
{
QString sRec;
if(std::get<JI_REC>(java)) sRec = "(Recommended)";
QLOG_INFO() << std::get<JI_ID>(java) << std::get<JI_ARCH>(java) << " at " << std::get<JI_PATH>(java) << sRec;
}
return javas;
}
#elif OSX
QStringList JavaUtils::FindJavaPath()
std::vector<java_install> JavaUtils::FindJavaPath()
{
QLOG_INFO() << "OS X Java detection incomplete - defaulting to \"java\"";
QStringList paths;
paths << "java";
return paths;
return this->GetDefaultPath();
}
#elif LINUX
QStringList JavaUtils::FindJavaPath()
std::vector<java_install> JavaUtils::FindJavaPath()
{
QLOG_INFO() << "Linux Java detection incomplete - defaulting to \"java\"";
QStringList paths;
paths << "java";
return paths;
return this->GetDefaultPath();
}
#else
QStringList JavaUtils::FindJavaPath()
std::vector<java_install> JavaUtils::FindJavaPath()
{
QLOG_INFO() << "Unknown operating system build - defaulting to \"java\"";
QStringList paths;
paths << "java";
return paths;
return this->GetDefaultPath();
}
#endif

20
logic/JavaUtils.h
View File

@ -17,10 +17,28 @@
#include <QStringList>
#include "osutils.h"
#if WINDOWS
#include <windows.h>
#endif
#define JI_ID 0
#define JI_ARCH 1
#define JI_PATH 2
#define JI_REC 3
typedef std::tuple<QString, QString, QString, bool> java_install;
class JavaUtils
{
public:
JavaUtils();
QStringList FindJavaPath();
std::vector<java_install> FindJavaPaths();
private:
std::vector<java_install> GetDefaultJava();
#if WINDOWS
std::vector<java_install> FindJavaFromRegistryKey(DWORD keyType, QString keyName);
#endif
};