/// <summary>
/// Extract the stored credential from Windows Credential store
/// </summary>
/// <param name="target">Name of the application/Url where the credential is used for</param>
/// <param name="type">Credential type</param>
/// <returns>return the credentials if success, null if target not found, throw if failed to read stored credentials</returns>
public static NetworkCredential GetCredentials(string target, CredentialType type = CredentialType.Generic)
{
IntPtr nCredPtr;
var username = String.Empty;
var passwd = String.Empty;
var domain = String.Empty;
// Make the API call using the P/Invoke signature
bool isSuccess = NativeCode.CredRead(target, (NativeCode.CredentialType)type, 0, out nCredPtr);
if (!isSuccess)
{
var lastError = Marshal.GetLastWin32Error();
if (lastError == (int)NativeCode.CredentialUIReturnCodes.NotFound)
{
return(null);
}
throw new Win32Exception(lastError,
String.Format("'CredRead' call throw an error (Error code: {0})", lastError));
}
try
{
using (var critCred = new CriticalCredentialHandle(nCredPtr))
{
Credential cred = critCred.GetCredential();
passwd = cred.CredentialBlob;
if (!String.IsNullOrEmpty(cred.UserName))
{
var user = cred.UserName;
StringBuilder userBuilder = new StringBuilder(cred.UserName.Length + 2);
StringBuilder domainBuilder = new StringBuilder(cred.UserName.Length + 2);
var returnCode = NativeCode.CredUIParseUserName(user, userBuilder, userBuilder.Capacity, domainBuilder, domainBuilder.Capacity);
var lastError = Marshal.GetLastWin32Error();
//assuming invalid account name to be not meeting condition for CredUIParseUserName
//"The name must be in UPN or down-level format, or a certificate"
if (returnCode == NativeCode.CredentialUIReturnCodes.InvalidAccountName)
{
userBuilder.Append(user);
}
else if (returnCode != 0)
{
throw new Win32Exception(lastError, String.Format("CredUIParseUserName throw an error (Error code: {0})", lastError));
}
username = userBuilder.ToString();
domain = domainBuilder.ToString();
}
return(new NetworkCredential(username, passwd, domain));
}
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// Extract the stored credential from Windows Credential store
/// </summary>
/// <param name="Target">Name of the application/Url where the credential is used for</param>
/// <returns>null if target not found, else stored credentials</returns>
public static NetworkCredential GetCredentials(string Target, CredentialType type = CredentialType.Generic)
{
IntPtr nCredPtr;
var username = String.Empty;
var passwd = String.Empty;
var domain = String.Empty;
// Make the API call using the P/Invoke signature
bool ret = NativeCode.CredRead(Target, (NativeCode.CredentialType)type, 0, out nCredPtr);
int lastError = Marshal.GetLastWin32Error();
if (!ret)
{
throw new Win32Exception(lastError, "CredDelete throw an error");
}
// If the API was successful then...
if (ret)
{
try
{
using (CriticalCredentialHandle critCred = new CriticalCredentialHandle(nCredPtr))
{
Credential cred = critCred.GetCredential();
passwd = cred.CredentialBlob;
if (!String.IsNullOrEmpty(cred.UserName))
{
var user = cred.UserName;
StringBuilder userBuilder = new StringBuilder(cred.UserName.Length + 2);
StringBuilder domainBuilder = new StringBuilder(cred.UserName.Length + 2);
var ret1 = NativeCode.CredUIParseUserName(user, userBuilder, userBuilder.Capacity, domainBuilder, domainBuilder.Capacity);
lastError = Marshal.GetLastWin32Error();
//assuming invalid account name to be not meeting condition for CredUIParseUserName
//"The name must be in UPN or down-level format, or a certificate"
if (ret1 == NativeCode.CredentialUIReturnCodes.InvalidAccountName)
{
userBuilder.Append(user);
}
else if ((uint)ret1 > 0)
{
throw new Win32Exception(lastError, "CredUIParseUserName throw an error");
}
username = userBuilder.ToString();
domain = domainBuilder.ToString();
}
return(new NetworkCredential(username, passwd, domain));
}
}
catch (Exception e)
{
return(null);
}
}
return(null);
}
/// <summary>
/// Extract the stored credential from WIndows Credential store
/// </summary>
/// <param name="Target">Name of the application/Url where the credential is used for</param>
/// <returns>null if target not found, else stored credentials</returns>
public static NetworkCredential GetCredentials(string Target)
{
IntPtr nCredPtr;
var username = String.Empty;
var passwd = String.Empty;
var domain = String.Empty;
// Make the API call using the P/Invoke signature
bool ret = NativeCode.CredRead (Target, NativeCode.CredentialType.Generic, 0, out nCredPtr);
int lastError = Marshal.GetLastWin32Error ();
if ( !ret )
throw new Win32Exception (lastError, "CredDelete throw an error");
// If the API was successful then...
if ( ret )
{
using ( CriticalCredentialHandle critCred = new CriticalCredentialHandle (nCredPtr) )
{
Credential cred = critCred.GetCredential ();
passwd = cred.CredentialBlob;
var user = cred.UserName;
StringBuilder userBuilder = new StringBuilder ();
StringBuilder domainBuilder = new StringBuilder ();
var ret1 = NativeCode.CredUIParseUserName (user, userBuilder, int.MaxValue, domainBuilder, int.MaxValue);
lastError = Marshal.GetLastWin32Error ();
//assuming invalid account name to be not meeting condition for CredUIParseUserName
//"The name must be in UPN or down-level format, or a certificate"
if ( ret1 == NativeCode.CredentialUIReturnCodes.InvalidAccountName )
userBuilder.Append (user);
else if ( (uint) ret1 > 0 )
throw new Win32Exception (lastError, "CredUIParseUserName throw an error");
username = userBuilder.ToString ();
domain = domainBuilder.ToString ();
return new NetworkCredential (username, passwd, domain);
}
}
return null;
}