// This function check whether dotnet exe exists in %PATH% on IOT device.
// It will read %PATH% from registry and expand %systemroot% if found
// Currently it doesn't support expanding other variables.
internal static bool IsDotNetExeInPath(MachineHealthContainer machineHealthContainer)
{
bool result = true;
Parallel.ForEach(
machineHealthContainer.GetHealthyMachineNames(),
(string machineName) =>
{
// Currently we only need to check for IOTCore environment
if (StandaloneUtility.IsIOTCore(machineName))
{
string remotePath = string.Empty;
string remoteSystemRoot = string.Empty;
// Read %Path% variable
using (RegistryKey regKey = StandaloneUtility.GetHklm(machineName))
{
RegistryKey envKey = regKey.OpenSubKey(DMConstants.EnvironmentRegKeyPath);
if (envKey != null)
{
remotePath = (string)envKey.GetValue(DMConstants.Path, string.Empty, RegistryValueOptions.DoNotExpandEnvironmentNames);
}
RegistryKey versionKey = regKey.OpenSubKey(DMConstants.IOTCurrentVersionRegKeyPath);
if (versionKey != null)
{
remoteSystemRoot = (string)versionKey.GetValue(DMConstants.SystemRoot, string.Empty);
}
}
bool found = false;
string[] paths = remotePath.Split(';');
foreach (string path in paths)
{
// Replace %SystemRoot%
string absolutePath = Regex.Replace(path, "%SYSTEMROOT%", remoteSystemRoot, RegexOptions.IgnoreCase);
absolutePath = Path.Combine(absolutePath, "dotnet.exe");
string dotNetExePath = Helpers.GetRemotePathIfNotLocalMachine(absolutePath, machineName);
if (File.Exists(dotNetExePath))
{
found = true;
break;
}
}
if (!found)
{
result = false;
}
}
});
return(result);
}