|
private CredEnumerate ( string targetNameFilter, CredentialEnumerateFlags flags, int &count, |
||
| targetNameFilter | string | |
| flags | CredentialEnumerateFlags | |
| count | int | |
| credenitalsArrayPtr | ||
| return | bool | |
public IEnumerable <SecureData> EnumerateSecureData(string prefix)
{
string filter = prefix ?? string.Empty + "*";
if (NativeMethods.CredEnumerate(filter, 0, out int count, out IntPtr credentialArrayPtr))
{
Trace.WriteLine($"{count} credentials enumerated from secret store.");
try
{
for (int i = 0; i < count; i += 1)
{
int offset = i * Marshal.SizeOf(typeof(IntPtr));
IntPtr credentialPtr = Marshal.ReadIntPtr(credentialArrayPtr, offset);
if (credentialPtr != IntPtr.Zero)
{
NativeMethods.Credential credStruct = Marshal.PtrToStructure <NativeMethods.Credential>(credentialPtr);
int passwordLength = credStruct.CredentialBlobSize;
byte[] data = new byte[credStruct.CredentialBlobSize];
Marshal.Copy(credStruct.CredentialBlob, data, 0, credStruct.CredentialBlobSize);
string name = credStruct.UserName ?? string.Empty;
string key = credStruct.TargetName;
yield return(new SecureData(key, name, data));
}
}
}
finally
{
NativeMethods.CredFree(credentialArrayPtr);
}
}
protected void PurgeCredentials(string @namespace)
{
string filter = @namespace + "*";
int count;
IntPtr credentialArrayPtr;
if (NativeMethods.CredEnumerate(filter, 0, out count, out credentialArrayPtr))
{
for (int i = 0; i < count; i += 1)
{
int offset = i * Marshal.SizeOf(typeof(IntPtr));
IntPtr credentialPtr = Marshal.ReadIntPtr(credentialArrayPtr, offset);
if (credentialPtr != IntPtr.Zero)
{
NativeMethods.Credential credential = Marshal.PtrToStructure <NativeMethods.Credential>(credentialPtr);
if (!NativeMethods.CredDelete(credential.TargetName, credential.Type, 0))
{
int error = Marshal.GetLastWin32Error();
Debug.Fail("Failed with error code " + error.ToString("X"));
}
}
}
NativeMethods.CredFree(credentialArrayPtr);
}
else
{
int error = Marshal.GetLastWin32Error();
Debug.Fail("Failed with error code " + error.ToString("X"));
}
}
protected IEnumerable <Secret> EnumerateCredentials(string @namespace)
{
string filter = @namespace ?? string.Empty + "*";
if (NativeMethods.CredEnumerate(filter, 0, out int count, out IntPtr credentialArrayPtr))
{
Trace.WriteLine($"{count} credentials enumerated from secret store.");
try
{
for (int i = 0; i < count; i += 1)
{
int offset = i * Marshal.SizeOf(typeof(IntPtr));
IntPtr credentialPtr = Marshal.ReadIntPtr(credentialArrayPtr, offset);
if (credentialPtr != IntPtr.Zero)
{
NativeMethods.Credential credStruct = Marshal.PtrToStructure <NativeMethods.Credential>(credentialPtr);
int passwordLength = (int)credStruct.CredentialBlobSize;
string password = passwordLength > 0
? Marshal.PtrToStringUni(credStruct.CredentialBlob, passwordLength / sizeof(char))
: string.Empty;
string username = credStruct.UserName ?? string.Empty;
var credentials = new Credential(username, password);
yield return(credentials);
}
}
}
finally
{
NativeMethods.CredFree(credentialArrayPtr);
}
}
