private static AutoRohlikovac.Credential ReadCredential(Credential credential)
{
var applicationName = Marshal.PtrToStringUni(credential.TargetName);
var userName = Marshal.PtrToStringUni(credential.UserName);
string secret = null;
if (credential.CredentialBlob != IntPtr.Zero)
{
secret = Marshal.PtrToStringUni(credential.CredentialBlob, (int) credential.CredentialBlobSize/2);
}
return new AutoRohlikovac.Credential(credential.Type, applicationName, userName, secret);
}
public static int WriteCredential(string applicationName, string userName, string secret)
{
var byteArray = Encoding.Unicode.GetBytes(secret);
if (byteArray.Length > 512)
throw new ArgumentOutOfRangeException(secret, @"The secret message has exceeded 512 bytes.");
var credential = new Credential
{
AttributeCount = 0,
Attributes = IntPtr.Zero,
Comment = IntPtr.Zero,
TargetAlias = IntPtr.Zero,
Type = CredentialType.Generic,
Persist = (uint) CredentialPersistence.LocalMachine,
CredentialBlobSize = (uint) Encoding.Unicode.GetBytes(secret).Length,
TargetName = Marshal.StringToCoTaskMemUni(applicationName),
CredentialBlob = Marshal.StringToCoTaskMemUni(secret),
UserName = Marshal.StringToCoTaskMemUni(userName ?? Environment.UserName)
};
var written = CredWrite(ref credential, 0);
var lastError = Marshal.GetLastWin32Error();
Marshal.FreeCoTaskMem(credential.TargetName);
Marshal.FreeCoTaskMem(credential.CredentialBlob);
Marshal.FreeCoTaskMem(credential.UserName);
if (written)
return 0;
throw new Exception($"CredWrite failed with the error code {lastError}.");
}
