private async Task <AuthenticationTicket> DeserializeIdentityTokenAsync(string token, OpenIdConnectRequest request)
{
var notification = new DeserializeIdentityTokenContext(Context, Options, request, token)
{
SecurityTokenHandler = Options.IdentityTokenHandler
};
// Note: ValidateAudience and ValidateLifetime are always set to false:
// if necessary, the audience and the expiration can be validated
// in InvokeIntrospectionEndpointAsync or InvokeTokenEndpointAsync.
notification.TokenValidationParameters = new TokenValidationParameters {
IssuerSigningKeys = Options.SigningCredentials.Select(credentials => credentials.SigningKey),
ValidIssuer = Context.GetIssuer(Options),
ValidateAudience = false,
ValidateLifetime = false
};
await Options.Provider.DeserializeIdentityToken(notification);
if (notification.HandledResponse || notification.Ticket != null)
{
notification.Ticket.SetUsage(OpenIdConnectConstants.Usages.IdentityToken);
return(notification.Ticket);
}
else if (notification.Skipped)
{
return(null);
}
if (notification.SecurityTokenHandler == null)
{
return(null);
}
SecurityToken securityToken;
ClaimsPrincipal principal;
try {
if (!notification.SecurityTokenHandler.CanReadToken(token))
{
Options.Logger.LogDebug("The identity token handler refused to read the token: {Token}", token);
return(null);
}
principal = notification.SecurityTokenHandler.ValidateToken(token, notification.TokenValidationParameters, out securityToken);
}
catch (Exception exception) {
Options.Logger.LogDebug("An exception occured when deserializing an identity token: {Message}", exception.Message);
return(null);
}
// Parameters stored in AuthenticationProperties are lost
// when the identity token is serialized using a security token handler.
// To mitigate that, they are inferred from the claims or the security token.
var properties = new AuthenticationProperties {
ExpiresUtc = securityToken.ValidTo,
IssuedUtc = securityToken.ValidFrom
};
var ticket = new AuthenticationTicket((ClaimsIdentity)principal.Identity, properties);
var audiences = principal.FindAll(OpenIdConnectConstants.Claims.Audience);
if (audiences.Any())
{
ticket.SetAudiences(audiences.Select(claim => claim.Value));
}
var presenters = principal.FindAll(OpenIdConnectConstants.Claims.AuthorizedParty);
if (presenters.Any())
{
ticket.SetPresenters(presenters.Select(claim => claim.Value));
}
var identifier = principal.FindFirst(OpenIdConnectConstants.Claims.JwtId);
if (identifier != null)
{
ticket.SetTicketId(identifier.Value);
}
var usage = principal.FindFirst(OpenIdConnectConstants.Claims.Usage);
if (usage != null)
{
ticket.SetUsage(usage.Value);
}
var confidentiality = principal.FindFirst(OpenIdConnectConstants.Claims.ConfidentialityLevel);
if (confidentiality != null)
{
ticket.SetProperty(OpenIdConnectConstants.Properties.ConfidentialityLevel, confidentiality.Value);
}
// Ensure the received ticket is an identity token.
if (!ticket.IsIdentityToken())
{
Options.Logger.LogDebug("The received token was not an identity token: {Token}.", token);
return(null);
}
return(ticket);
}
private async Task <AuthenticationTicket> DeserializeIdentityTokenAsync(string token, OpenIdConnectMessage request)
{
var notification = new DeserializeIdentityTokenContext(Context, Options, request, token)
{
Issuer = Context.GetIssuer(Options),
SecurityTokenHandler = Options.IdentityTokenHandler,
SigningCredentials = Options.SigningCredentials.FirstOrDefault()
};
await Options.Provider.DeserializeIdentityToken(notification);
// Directly return the authentication ticket if one
// has been provided by DeserializeIdentityToken.
if (notification.Ticket != null)
{
return(notification.Ticket);
}
if (notification.SecurityTokenHandler == null)
{
return(null);
}
// Create new validation parameters to validate the security token.
// ValidateAudience and ValidateLifetime are always set to false:
// if necessary, the audience and the expiration can be validated
// in InvokeIntrospectionEndpointAsync or InvokeTokenEndpointAsync.
var parameters = new TokenValidationParameters {
IssuerSigningKey = notification.SigningCredentials.SigningKey,
ValidIssuer = notification.Issuer,
ValidateAudience = false,
ValidateLifetime = false
};
SecurityToken securityToken;
ClaimsPrincipal principal;
try {
principal = notification.SecurityTokenHandler.ValidateToken(token, parameters, out securityToken);
}
catch (Exception exception) {
Options.Logger.LogInformation("An exception occured when deserializing an identity token: {Message}", exception.Message);
return(null);
}
// Parameters stored in AuthenticationProperties are lost
// when the identity token is serialized using a security token handler.
// To mitigate that, they are inferred from the claims or the security token.
var properties = new AuthenticationProperties {
ExpiresUtc = securityToken.ValidTo,
IssuedUtc = securityToken.ValidFrom
};
var ticket = new AuthenticationTicket((ClaimsIdentity)principal.Identity, properties);
var audiences = principal.FindAll(OpenIdConnectConstants.Claims.Audience);
if (audiences.Any())
{
ticket.SetAudiences(audiences.Select(claim => claim.Value));
}
var presenters = principal.FindAll(OpenIdConnectConstants.Claims.AuthorizedParty);
if (presenters.Any())
{
ticket.SetPresenters(presenters.Select(claim => claim.Value));
}
var identifier = principal.FindFirst(OpenIdConnectConstants.Claims.JwtId);
if (identifier != null)
{
ticket.SetTicketId(identifier.Value);
}
var usage = principal.FindFirst(OpenIdConnectConstants.Claims.Usage);
if (usage != null)
{
ticket.SetUsage(usage.Value);
}
var confidential = principal.FindFirst(OpenIdConnectConstants.Claims.Confidential);
if (confidential != null && string.Equals(confidential.Value, "true", StringComparison.OrdinalIgnoreCase))
{
ticket.Properties.Dictionary[OpenIdConnectConstants.Properties.Confidential] = "true";
}
// Ensure the received ticket is an identity token.
if (!ticket.IsIdentityToken())
{
Options.Logger.LogInformation("The received token was not an identity token: {Token}.", token);
return(null);
}
return(ticket);
}
/// <summary>
/// Called when receiving an identity token. An application may use this context
/// to deserialize the token using a custom format and to skip the default logic using
/// <see cref="BaseNotification{OpenIdConnectServerOptions}.HandleResponse"/>.
/// </summary>
/// <param name="context">The context of the event carries information in and results out.</param>
/// <returns>Task to enable asynchronous execution</returns>
public virtual Task DeserializeIdentityToken(DeserializeIdentityTokenContext context) => OnDeserializeIdentityToken(context);
private async Task <AuthenticationTicket> DeserializeIdentityTokenAsync(string token, OpenIdConnectRequest request)
{
var notification = new DeserializeIdentityTokenContext(Context, Options, request, token)
{
SecurityTokenHandler = Options.IdentityTokenHandler
};
// Note: ValidateAudience and ValidateLifetime are always set to false:
// if necessary, the audience and the expiration can be validated
// in InvokeIntrospectionEndpointAsync or InvokeTokenEndpointAsync.
notification.TokenValidationParameters = new TokenValidationParameters
{
IssuerSigningKeys = Options.SigningCredentials.Select(credentials => credentials.SigningKey)
.Where(key => key is AsymmetricSecurityKey),
NameClaimType = OpenIdConnectConstants.Claims.Name,
RoleClaimType = OpenIdConnectConstants.Claims.Role,
ValidIssuer = Context.GetIssuer(Options),
ValidateAudience = false,
ValidateLifetime = false
};
await Options.Provider.DeserializeIdentityToken(notification);
if (notification.HandledResponse || notification.Ticket != null)
{
notification.Ticket.SetTokenUsage(OpenIdConnectConstants.TokenUsages.IdToken);
return(notification.Ticket);
}
else if (notification.Skipped)
{
return(null);
}
if (notification.SecurityTokenHandler == null)
{
throw new InvalidOperationException("A security token handler must be provided.");
}
SecurityToken securityToken;
ClaimsPrincipal principal;
try
{
if (!notification.SecurityTokenHandler.CanReadToken(token))
{
Logger.LogTrace("The identity token '{Token}' was rejected by the security token handler.", token);
return(null);
}
principal = notification.SecurityTokenHandler.ValidateToken(token, notification.TokenValidationParameters, out securityToken);
}
catch (Exception exception)
{
Logger.LogDebug("An exception occured while deserializing an identity token: {Exception}.", exception);
return(null);
}
// Parameters stored in AuthenticationProperties are lost
// when the identity token is serialized using a security token handler.
// To mitigate that, they are inferred from the claims or the security token.
var properties = new AuthenticationProperties
{
ExpiresUtc = securityToken.ValidTo,
IssuedUtc = securityToken.ValidFrom
};
var ticket = new AuthenticationTicket((ClaimsIdentity)principal.Identity, properties)
.SetAudiences(principal.FindAll(OpenIdConnectConstants.Claims.Audience).Select(claim => claim.Value))
.SetConfidentialityLevel(principal.GetClaim(OpenIdConnectConstants.Claims.ConfidentialityLevel))
.SetPresenters(principal.FindAll(OpenIdConnectConstants.Claims.AuthorizedParty).Select(claim => claim.Value))
.SetTokenId(principal.GetClaim(OpenIdConnectConstants.Claims.JwtId))
.SetTokenUsage(principal.GetClaim(OpenIdConnectConstants.Claims.TokenUsage));
// Ensure that the received ticket is an identity token.
if (!ticket.IsIdentityToken())
{
Logger.LogTrace("The received token was not an identity token: {Token}.", token);
return(null);
}
Logger.LogTrace("The identity token '{Token}' was successfully validated using " +
"the specified security token handler: {Claims} ; {Properties}.",
token, ticket.Identity.Claims, ticket.Properties.Dictionary);
return(ticket);
}