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fix/windows: Check registry for per-user java installations

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Signed-off-by: Kationor <n96211028@gmail.com>
This commit is contained in:
Kationor 2024-08-07 16:21:34 +02:00
parent 0215af828d
commit 659fa7fbfb
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GPG Key ID: 1271876935192713
1 changed files with 40 additions and 38 deletions
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78
launcher/java/JavaUtils.cpp
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@ -182,56 +182,58 @@ QList<JavaInstallPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString
else if (keyType == KEY_WOW64_32KEY)
archType = "32";
HKEY jreKey;
if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, keyName.toStdWString().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.
for (HKEY baseRegistry : { HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE }) {
HKEY jreKey;
if (RegOpenKeyExW(baseRegistry, keyName.toStdWString().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.
WCHAR subKeyName[255];
DWORD subKeyNameSize, numSubKeys, retCode;
WCHAR subKeyName[255];
DWORD subKeyNameSize, numSubKeys, retCode;
// Get the number of subkeys
RegQueryInfoKeyW(jreKey, NULL, NULL, NULL, &numSubKeys, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
// Get the number of subkeys
RegQueryInfoKeyW(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 = RegEnumKeyExW(jreKey, i, subKeyName, &subKeyNameSize, NULL, NULL, NULL, NULL);
QString newSubkeyName = QString::fromWCharArray(subKeyName);
if (retCode == ERROR_SUCCESS) {
// Now open the registry key for the version that we just got.
QString newKeyName = keyName + "\\" + newSubkeyName + subkeySuffix;
// 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);
if (retCode == ERROR_SUCCESS) {
// Now open the registry key for the version that we just got.
QString newKeyName = keyName + "\\" + newSubkeyName + subkeySuffix;
HKEY newKey;
if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, newKeyName.toStdWString().c_str(), 0, KEY_READ | keyType, &newKey) ==
ERROR_SUCCESS) {
// Read the JavaHome value to find where Java is installed.
DWORD valueSz = 0;
if (RegQueryValueExW(newKey, keyJavaDir.toStdWString().c_str(), NULL, NULL, NULL, &valueSz) == ERROR_SUCCESS) {
WCHAR* value = new WCHAR[valueSz];
RegQueryValueExW(newKey, keyJavaDir.toStdWString().c_str(), NULL, NULL, (BYTE*)value, &valueSz);
HKEY newKey;
if (RegOpenKeyExW(baseRegistry, newKeyName.toStdWString().c_str(), 0, KEY_READ | keyType, &newKey) ==
ERROR_SUCCESS) {
// Read the JavaHome value to find where Java is installed.
DWORD valueSz = 0;
if (RegQueryValueExW(newKey, keyJavaDir.toStdWString().c_str(), NULL, NULL, NULL, &valueSz) == ERROR_SUCCESS) {
WCHAR* value = new WCHAR[valueSz];
RegQueryValueExW(newKey, keyJavaDir.toStdWString().c_str(), NULL, NULL, (BYTE*)value, &valueSz);
QString newValue = QString::fromWCharArray(value);
delete[] value;
QString newValue = QString::fromWCharArray(value);
delete[] value;
// Now, we construct the version object and add it to the list.
JavaInstallPtr javaVersion(new JavaInstall());
// Now, we construct the version object and add it to the list.
JavaInstallPtr javaVersion(new JavaInstall());
javaVersion->id = newSubkeyName;
javaVersion->arch = archType;
javaVersion->path = QDir(FS::PathCombine(newValue, "bin")).absoluteFilePath("javaw.exe");
javas.append(javaVersion);
javaVersion->id = newSubkeyName;
javaVersion->arch = archType;
javaVersion->path = QDir(FS::PathCombine(newValue, "bin")).absoluteFilePath("javaw.exe");
javas.append(javaVersion);
}
RegCloseKey(newKey);
}
RegCloseKey(newKey);
}
}
}
}
RegCloseKey(jreKey);
RegCloseKey(jreKey);
}
}
return javas;