IEnumerable <string> GetJavaHomePathsFromWindowsRegistry()
{
if (Path.DirectorySeparatorChar == '/')
{
yield break;
}
// check the user specified path
var roots = new [] { RegistryEx.CurrentUser, RegistryEx.LocalMachine };
const RegistryEx.Wow64 wow = RegistryEx.Wow64.Key32;
var regKey = GetMDRegistryKey();
foreach (var root in roots)
{
if (CheckRegistryKeyForExecutable(root, regKey, MDREG_JAVA_SDK, wow, "bin", JARSIGNER))
{
yield return(RegistryEx.GetValueString(root, regKey, MDREG_JAVA_SDK, wow));
}
}
string subkey = @"SOFTWARE\JavaSoft\Java Development Kit";
Log.LogMessage(MessageImportance.Low, "Looking for Java 6 SDK...");
foreach (var wow64 in new [] { RegistryEx.Wow64.Key32, RegistryEx.Wow64.Key64 })
{
string key_name = string.Format(@"{0}\{1}\{2}", "HKLM", subkey, "CurrentVersion");
var currentVersion = RegistryEx.GetValueString(RegistryEx.LocalMachine, subkey, "CurrentVersion", wow64);
if (!string.IsNullOrEmpty(currentVersion))
{
Log.LogMessage(MessageImportance.Low, $" Key {key_name} found.");
// No matter what the CurrentVersion is, look for 1.6 or 1.7 or 1.8
if (CheckRegistryKeyForExecutable(RegistryEx.LocalMachine, subkey + "\\" + "1.8", "JavaHome", wow64, "bin", JARSIGNER))
{
yield return(RegistryEx.GetValueString(RegistryEx.LocalMachine, subkey + "\\" + "1.8", "JavaHome", wow64));
}
if (CheckRegistryKeyForExecutable(RegistryEx.LocalMachine, subkey + "\\" + "1.7", "JavaHome", wow64, "bin", JARSIGNER))
{
yield return(RegistryEx.GetValueString(RegistryEx.LocalMachine, subkey + "\\" + "1.7", "JavaHome", wow64));
}
if (CheckRegistryKeyForExecutable(RegistryEx.LocalMachine, subkey + "\\" + "1.6", "JavaHome", wow64, "bin", JARSIGNER))
{
yield return(RegistryEx.GetValueString(RegistryEx.LocalMachine, subkey + "\\" + "1.6", "JavaHome", wow64));
}
}
Log.LogMessage(MessageImportance.Low, $" Key {key_name} not found.");
}
}
private bool CheckRegistryKeyForExecutable(UIntPtr key, string subkey, string valueName, RegistryEx.Wow64 wow64, string subdir, string exe)
{
string key_name = string.Format(@"{0}\{1}\{2}", key == RegistryEx.CurrentUser ? "HKCU" : "HKLM", subkey, valueName);
var value = RegistryEx.GetValueString(key, subkey, valueName, wow64);
var path = string.IsNullOrEmpty(value) ? null : value;
if (path == null)
{
Log.LogMessage(MessageImportance.Low, $" Key {key_name} not found.");
return(false);
}
if (!FindExecutablesInDirectory(Path.Combine(path, subdir), exe).Any())
{
Log.LogMessage(MessageImportance.Low, $" Key {key_name} found:\n Path does not contain {exe} in \\{subdir} ({path}).");
return(false);
}
Log.LogMessage(MessageImportance.Low, $" Key {key_name} found:\n Path contains {exe} in \\{subdir} ({path}).");
return(true);
}