private CredUnPackAuthenticationBuffer ( uint dwFlags, |
||
dwFlags | uint | |
pAuthBuffer | ||
cbAuthBuffer | uint | |
pszUserName | StringBuilder | |
pcchMaxUserName | uint | |
pszDomainName | StringBuilder | |
pcchMaxDomainName | uint | |
pszPassword | StringBuilder | |
pcchMaxPassword | uint | |
Résultat | bool |
private void ManageCredentialsStorage(IntPtr outBuffer, uint outBufferSize, bool storedCredentials) { var userName = new StringBuilder(CredUi.CREDUI_MAX_USERNAME_LENGTH); var password = new StringBuilder(CredUi.CREDUI_MAX_PASSWORD_LENGTH); var userNameSize = (uint)userName.Capacity; var passwordSize = (uint)password.Capacity; uint domainSize = 0; if (!CredUi.CredUnPackAuthenticationBuffer(0, outBuffer, outBufferSize, userName, ref userNameSize, null, ref domainSize, password, ref passwordSize)) { throw Log.ErrorAndCreateException(x => new CredentialException(Marshal.GetLastWin32Error()), "Failed to create the authentication buffer after prompting"); } UserName = userName.ToString(); Password = password.ToString(); Log.Debug("User entered credentials with username '{0}'", UserName); if (!ShowSaveCheckBox) { return; } // If the NativeCredential was stored previously but the user has now cleared the save checkbox, // we want to delete the NativeCredential. if (storedCredentials && !IsSaveChecked) { DeleteCredential(Target); } if (IsSaveChecked) { WriteCredential(Target, UserName, Password); } }
private bool PromptForCredentialsCredUIWin(IntPtr owner, bool storedCredentials) { if (AllowStoredCredentials) { var credentials = ReadCredential(Target); if (credentials != null) { UserName = credentials.UserName; Password = credentials.Password; return(true); } } if (!IsAuthenticationRequired) { return(false); } var info = CreateCredUIInfo(owner, false); var flags = CredUi.CredUiWinFlags.Generic; if (ShowSaveCheckBox) { flags |= CredUi.CredUiWinFlags.Checkbox; } var inBuffer = IntPtr.Zero; var outBuffer = IntPtr.Zero; try { uint inBufferSize = 0; if (UserName.Length > 0) { CredUi.CredPackAuthenticationBuffer(0, UserName, Password, IntPtr.Zero, ref inBufferSize); if (inBufferSize > 0) { inBuffer = Marshal.AllocCoTaskMem((int)inBufferSize); if (!CredUi.CredPackAuthenticationBuffer(0, UserName, Password, inBuffer, ref inBufferSize)) { throw new CredentialException(Marshal.GetLastWin32Error()); } } } uint outBufferSize = 0; uint package = 0; var result = CredUi.CredUIPromptForWindowsCredentials(ref info, 0, ref package, inBuffer, inBufferSize, out outBuffer, out outBufferSize, ref _isSaveChecked, flags); switch (result) { case CredUi.CredUiReturnCodes.NO_ERROR: var userName = new StringBuilder(CredUi.CREDUI_MAX_USERNAME_LENGTH); var password = new StringBuilder(CredUi.CREDUI_MAX_PASSWORD_LENGTH); var userNameSize = (uint)userName.Capacity; var passwordSize = (uint)password.Capacity; uint domainSize = 0; if (!CredUi.CredUnPackAuthenticationBuffer(0, outBuffer, outBufferSize, userName, ref userNameSize, null, ref domainSize, password, ref passwordSize)) { throw new CredentialException(Marshal.GetLastWin32Error()); } UserName = userName.ToString(); Password = password.ToString(); if (ShowSaveCheckBox) { _confirmTarget = Target; // If the NativeCredential was stored previously but the user has now cleared the save checkbox, // we want to delete the NativeCredential. if (storedCredentials && !IsSaveChecked) { DeleteCredential(Target); } if (IsSaveChecked) { WriteCredential(Target, UserName, Password); } } return(true); case CredUi.CredUiReturnCodes.ERROR_CANCELLED: return(false); default: throw new CredentialException((int)result); } } finally { if (inBuffer != IntPtr.Zero) { Marshal.FreeCoTaskMem(inBuffer); } if (outBuffer != IntPtr.Zero) { Marshal.FreeCoTaskMem(outBuffer); } } }
private bool PromptForCredentialsCredUIWin(IntPtr owner, bool storedCredentials) { if (AllowStoredCredentials) { Log.Debug("Stored credentials are allowed"); var credentials = ReadCredential(Target, true); if (credentials != null) { Log.Debug("Successfully read stored credentials: '{0}'", credentials); UserName = credentials.UserName; Password = credentials.Password; return(true); } } if (!IsAuthenticationRequired) { Log.Debug("No authentication is required, no need to prompt for credentials"); return(false); } var info = CreateCredUIInfo(owner, false); var flags = CredUi.CredUiWinFlags.Generic; if (ShowSaveCheckBox) { flags |= CredUi.CredUiWinFlags.Checkbox; } var inBuffer = IntPtr.Zero; var outBuffer = IntPtr.Zero; try { uint inBufferSize = 0; if (UserName.Length > 0) { // First call is only to get the required buffer size CredUi.CredPackAuthenticationBuffer(0, UserName, Password, IntPtr.Zero, ref inBufferSize); if (inBufferSize > 0) { inBuffer = Marshal.AllocCoTaskMem((int)inBufferSize); if (!CredUi.CredPackAuthenticationBuffer(0, UserName, Password, inBuffer, ref inBufferSize)) { throw Log.ErrorAndCreateException(x => new CredentialException(Marshal.GetLastWin32Error()), "Failed to create the authentication buffer before prompting"); } } } uint outBufferSize = 0; uint package = 0; Log.Debug("Prompting user for credentials"); var result = CredUi.CredUIPromptForWindowsCredentials(ref info, 0, ref package, inBuffer, inBufferSize, out outBuffer, out outBufferSize, ref _isSaveChecked, flags); switch (result) { case CredUi.CredUiReturnCodes.NO_ERROR: var userName = new StringBuilder(CredUi.CREDUI_MAX_USERNAME_LENGTH); var password = new StringBuilder(CredUi.CREDUI_MAX_PASSWORD_LENGTH); var userNameSize = (uint)userName.Capacity; var passwordSize = (uint)password.Capacity; uint domainSize = 0; if (!CredUi.CredUnPackAuthenticationBuffer(0, outBuffer, outBufferSize, userName, ref userNameSize, null, ref domainSize, password, ref passwordSize)) { throw Log.ErrorAndCreateException(x => new CredentialException(Marshal.GetLastWin32Error()), "Failed to create the authentication buffer after prompting"); } UserName = userName.ToString(); Password = password.ToString(); Log.Debug("User entered credentials with username '{0}'", UserName); if (ShowSaveCheckBox) { _confirmTarget = Target; // If the NativeCredential was stored previously but the user has now cleared the save checkbox, // we want to delete the NativeCredential. if (storedCredentials && !IsSaveChecked) { DeleteCredential(Target); } if (IsSaveChecked) { WriteCredential(Target, UserName, Password); } } return(true); case CredUi.CredUiReturnCodes.ERROR_CANCELLED: Log.Debug("User canceled the credentials prompt"); return(false); default: throw Log.ErrorAndCreateException(x => new CredentialException((int)result), "Failed to prompt for credentials, error code '{0}'", result); } } finally { if (inBuffer != IntPtr.Zero) { Marshal.FreeCoTaskMem(inBuffer); } if (outBuffer != IntPtr.Zero) { Marshal.FreeCoTaskMem(outBuffer); } } }