protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
AuthenticationProperties properties = null;
var error = "Unknown";
try
{
string code = null;
string state = null;
var query = Request.Query;
var values = query.GetValues("code");
if (values != null && values.Count == 1)
{
code = values[0];
}
values = query.GetValues("error");
if (values != null && values.Count == 1)
{
error = values[0];
}
values = query.GetValues("state");
if (values != null && values.Count == 1)
{
state = values[0];
}
properties = Options.StateDataFormat.Unprotect(state);
if (properties == null)
{
return(null);
}
// OAuth2 10.12 CSRF
if (!ValidateCorrelationId(properties, _logger))
{
return(new AuthenticationTicket(null, properties));
}
var requestPrefix = Request.Scheme + "://" + Request.Host;
var redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
// Request the token
var requestMessage = new HttpRequestMessage(HttpMethod.Post, Options.Endpoints.TokenEndpoint);
requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes(
$"{Options.ClientId}:{Options.ClientSecret}")));
requestMessage.Content = new FormUrlEncodedContent(new List <KeyValuePair <string, string> > {
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("redirect_uri", redirectUri),
});
string text = "";
try
{
var tokenResponse = await _httpClient.SendAsync(requestMessage);
tokenResponse.EnsureSuccessStatusCode();
text = await tokenResponse.Content.ReadAsStringAsync();
}
catch (HttpRequestException ex)
{
if (ex.InnerException is System.Net.WebException && ex.InnerException.Message.Contains("TLS"))
{
if (!System.Net.ServicePointManager.SecurityProtocol.HasFlag(System.Net.SecurityProtocolType.Tls12))
{
throw new System.Net.WebException("PayPal requires TLS v1.2. TLS v1.0 and v1.1 connections will be refused. Set System.Net.ServicePointManager.SecurityProtocol = System.Net.ServicePointManager.SecurityProtocol | System.Net.SecurityProtocolType.Tls12", ex.InnerException);
}
}
throw;
}
// Deserializes the token response
var response = JsonConvert.DeserializeObject <dynamic>(text);
var accessToken = (string)response.access_token;
var refreshToken = (string)response.refresh_token;
// Get the PayPal user
var userRequest = new HttpRequestMessage(HttpMethod.Get, Options.Endpoints.UserInfoEndpoint);
userRequest.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
userRequest.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
var userResponse = await _httpClient.SendAsync(userRequest, Request.CallCancelled);
userResponse.EnsureSuccessStatusCode();
text = await userResponse.Content.ReadAsStringAsync();
var user = JObject.Parse(text);
var context = new PayPalAuthenticatedContext(Context, user, accessToken, refreshToken)
{
Identity = new ClaimsIdentity(Options.AuthenticationType, ClaimsIdentity.DefaultNameClaimType, ClaimsIdentity.DefaultRoleClaimType)
};
if (!string.IsNullOrEmpty(context.Id))
{
context.Identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, context.Id, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Email))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Email, context.Email, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Name))
{
context.Identity.AddClaim(new Claim("urn:paypal:name", context.Name, XmlSchemaString, Options.AuthenticationType));
}
context.Properties = properties;
await Options.Provider.Authenticated(context);
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
_logger.WriteError(ex.Message + " : " + error);
}
return(new AuthenticationTicket(null, properties));
}
/// <summary>
/// Invoked whenever PayPal successfully authenticates a user
/// </summary>
/// <param name="context">Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.</param>
/// <returns>A <see cref="Task"/> representing the completed operation.</returns>
public virtual Task Authenticated(PayPalAuthenticatedContext context)
{
return OnAuthenticated(context);
}
/// <summary>
/// Invoked whenever PayPal successfully authenticates a user
/// </summary>
/// <param name="context">Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.</param>
/// <returns>A <see cref="Task"/> representing the completed operation.</returns>
public virtual Task Authenticated(PayPalAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
