public async Task ExecuteAsync(ActionResult actionResult, AuthorizationParameter authorizationParameter, ClaimsPrincipal claimsPrincipal, Client client)
{
if (actionResult == null || actionResult.RedirectInstruction == null)
{
throw new ArgumentNullException(nameof(actionResult));
}
;
if (authorizationParameter == null)
{
throw new ArgumentNullException(nameof(authorizationParameter));
}
if (claimsPrincipal == null)
{
throw new ArgumentNullException(nameof(claimsPrincipal));
}
if (client == null)
{
throw new ArgumentNullException(nameof(client));
}
var newAccessTokenGranted = false;
var allowedTokenScopes = string.Empty;
GrantedToken grantedToken = null;
var newAuthorizationCodeGranted = false;
AuthorizationCode authorizationCode = null;
_simpleIdentityServerEventSource.StartGeneratingAuthorizationResponseToClient(authorizationParameter.ClientId,
authorizationParameter.ResponseType);
var responses = _parameterParserHelper.ParseResponseTypes(authorizationParameter.ResponseType);
var idTokenPayload = await GenerateIdTokenPayload(claimsPrincipal, authorizationParameter);
var userInformationPayload = await GenerateUserInformationPayload(claimsPrincipal, authorizationParameter);
if (responses.Contains(ResponseType.token)) // 1. Generate an access token.
{
if (!string.IsNullOrWhiteSpace(authorizationParameter.Scope))
{
allowedTokenScopes = string.Join(" ", _parameterParserHelper.ParseScopes(authorizationParameter.Scope));
}
grantedToken = await _grantedTokenHelper.GetValidGrantedTokenAsync(allowedTokenScopes, client.ClientId,
userInformationPayload, idTokenPayload);
if (grantedToken == null)
{
grantedToken = await _grantedTokenGeneratorHelper.GenerateTokenAsync(client, allowedTokenScopes,
userInformationPayload, idTokenPayload);
newAccessTokenGranted = true;
}
actionResult.RedirectInstruction.AddParameter(Constants.StandardAuthorizationResponseNames.AccessTokenName,
grantedToken.AccessToken);
}
if (responses.Contains(ResponseType.code)) // 2. Generate an authorization code.
{
var subject = claimsPrincipal == null ? string.Empty : claimsPrincipal.GetSubject();
var assignedConsent = await _consentHelper.GetConfirmedConsentsAsync(subject, authorizationParameter);
if (assignedConsent != null)
{
// Insert a temporary authorization code
// It will be used later to retrieve tha id_token or an access token.
authorizationCode = new AuthorizationCode
{
Code = Guid.NewGuid().ToString(),
RedirectUri = authorizationParameter.RedirectUrl,
CreateDateTime = DateTime.UtcNow,
ClientId = authorizationParameter.ClientId,
Scopes = authorizationParameter.Scope,
IdTokenPayload = idTokenPayload,
UserInfoPayLoad = userInformationPayload
};
newAuthorizationCodeGranted = true;
actionResult.RedirectInstruction.AddParameter(Constants.StandardAuthorizationResponseNames.AuthorizationCodeName,
authorizationCode.Code);
}
}
_jwtGenerator.FillInOtherClaimsIdentityTokenPayload(idTokenPayload,
authorizationCode == null ? string.Empty : authorizationCode.Code,
grantedToken == null ? string.Empty : grantedToken.AccessToken,
authorizationParameter, client);
if (newAccessTokenGranted) // 3. Insert the stateful access token into the DB OR insert the access token into the caching.
{
await _tokenStore.AddToken(grantedToken);
_simpleIdentityServerEventSource.GrantAccessToClient(authorizationParameter.ClientId,
grantedToken.AccessToken,
allowedTokenScopes);
}
if (newAuthorizationCodeGranted) // 4. Insert the authorization code into the caching.
{
if (client.RequirePkce)
{
authorizationCode.CodeChallenge = authorizationParameter.CodeChallenge;
authorizationCode.CodeChallengeMethod = authorizationParameter.CodeChallengeMethod;
}
await _authorizationCodeStore.AddAuthorizationCode(authorizationCode);
_simpleIdentityServerEventSource.GrantAuthorizationCodeToClient(authorizationParameter.ClientId,
authorizationCode.Code,
authorizationParameter.Scope);
}
if (responses.Contains(ResponseType.id_token))
{
var idToken = await GenerateIdToken(idTokenPayload, authorizationParameter);
actionResult.RedirectInstruction.AddParameter(Constants.StandardAuthorizationResponseNames.IdTokenName, idToken);
}
if (!string.IsNullOrWhiteSpace(authorizationParameter.State))
{
actionResult.RedirectInstruction.AddParameter(Constants.StandardAuthorizationResponseNames.StateName, authorizationParameter.State);
}
var sessionState = GetSessionState(authorizationParameter.ClientId, authorizationParameter.OriginUrl, authorizationParameter.SessionId);
if (sessionState != null)
{
actionResult.RedirectInstruction.AddParameter(Constants.StandardAuthorizationResponseNames.SessionState, sessionState);
}
if (authorizationParameter.ResponseMode == ResponseMode.form_post)
{
actionResult.Type = TypeActionResult.RedirectToAction;
actionResult.RedirectInstruction.Action = IdentityServerEndPoints.FormIndex;
actionResult.RedirectInstruction.AddParameter("redirect_uri", authorizationParameter.RedirectUrl);
}
// Set the response mode
if (actionResult.Type == TypeActionResult.RedirectToCallBackUrl)
{
var responseMode = authorizationParameter.ResponseMode;
if (responseMode == ResponseMode.None)
{
var responseTypes = _parameterParserHelper.ParseResponseTypes(authorizationParameter.ResponseType);
var authorizationFlow = _authorizationFlowHelper.GetAuthorizationFlow(responseTypes,
authorizationParameter.State);
responseMode = GetResponseMode(authorizationFlow);
}
actionResult.RedirectInstruction.ResponseMode = responseMode;
}
_simpleIdentityServerEventSource.EndGeneratingAuthorizationResponseToClient(authorizationParameter.ClientId,
actionResult.RedirectInstruction.Parameters.SerializeWithJavascript());
}