public async Task <ProcessConsentResult> ProcessConsent(ConsentInputModel model)
{
var result = new ProcessConsentResult();
ConsentResponse grantedConsent = null;
// user clicked 'no' - send back the standard 'access_denied' response
if (model.Button == "no")
{
grantedConsent = ConsentResponse.Denied;
}
// user clicked 'yes' - validate the data
else if (model.Button == "yes" && model != null)
{
// if the user consented to some scope, build the response model
if (model.ScopesConsented != null && model.ScopesConsented.Any())
{
var scopes = model.ScopesConsented;
if (ConsentOptions.EnableOfflineAccess == false)
{
scopes = scopes.Where(x => x != IdentityServer4.IdentityServerConstants.StandardScopes.OfflineAccess);
}
grantedConsent = new ConsentResponse
{
RememberConsent = model.RememberConsent,
ScopesConsented = scopes.ToArray()
};
}
else
{
result.ValidationError = ConsentOptions.MustChooseOneErrorMessage;
}
}
else
{
result.ValidationError = ConsentOptions.InvalidSelectionErrorMessage;
}
if (grantedConsent != null)
{
// validate return url is still valid
var request = await _interaction.GetAuthorizationContextAsync(model.ReturnUrl);
if (request == null)
{
return(result);
}
// communicate outcome of consent back to identityserver
await _interaction.GrantConsentAsync(request, grantedConsent);
// indiate that's it ok to redirect back to authorization endpoint
result.RedirectUri = model.ReturnUrl;
}
else
{
// we need to redisplay the consent UI
result.ViewModel = await BuildViewModelAsync(model.ReturnUrl, model);
}
return(result);
}
