protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
AuthenticationProperties properties = null;
try
{
string code = null;
string state = null;
IReadableStringCollection query = Request.Query;
IList <string> values = query.GetValues("code");
if (values != null && values.Count == 1)
{
code = 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));
}
string requestPrefix = Request.Scheme + "://" + Request.Host;
string redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
// Build up the body for the token request
var body = new List <KeyValuePair <string, string> >();
body.Add(new KeyValuePair <string, string>("grant_type", "authorization_code"));
body.Add(new KeyValuePair <string, string>("code", code));
body.Add(new KeyValuePair <string, string>("redirect_uri", redirectUri));
body.Add(new KeyValuePair <string, string>("state", state));
body.Add(new KeyValuePair <string, string>("scope", string.Join(",", Options.Scope)));
var request = new HttpRequestMessage(HttpMethod.Post, TokenEndpoint);
request.Content = new FormUrlEncodedContent(body);
// Request the token
HttpResponseMessage tokenResponse =
await httpClient.PostAsync(TokenEndpoint, new FormUrlEncodedContent(body));
tokenResponse.EnsureSuccessStatusCode();
string text = await tokenResponse.Content.ReadAsStringAsync();
// Deserializes the token response
dynamic response = JsonConvert.DeserializeObject <dynamic>(text);
string accessToken = (string)response.access_token;
string expires = (string)response.expires_in;
string refreshToken = (string)response.refresh_token;
// Get the Reddit user
HttpRequestMessage userRequest = new HttpRequestMessage(HttpMethod.Get, UserInfoEndpoint);
userRequest.Headers.Add("User-Agent", "OWIN OAuth Provider");
userRequest.Headers.Add("Authorization", "bearer " + Uri.EscapeDataString(accessToken) + "");
HttpResponseMessage graphResponse = await httpClient.SendAsync(userRequest, Request.CallCancelled);
graphResponse.EnsureSuccessStatusCode();
text = await graphResponse.Content.ReadAsStringAsync();
JObject user = JObject.Parse(text);
var context = new RedditAuthenticatedContext(Context, user, accessToken, expires, refreshToken);
context.Identity = new ClaimsIdentity(
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType);
if (!string.IsNullOrEmpty(context.Id))
{
context.Identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, context.UserName, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.UserName))
{
context.Identity.AddClaim(new Claim(ClaimsIdentity.DefaultNameClaimType, context.UserName, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Link))
{
context.Identity.AddClaim(new Claim("urn:reddit:url", context.Link, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.AccessToken))
{
context.Identity.AddClaim(new Claim("urn:reddit:accesstoken", context.AccessToken, XmlSchemaString, Options.AuthenticationType));
}
context.Identity.AddClaim(new Claim("urn:reddit:overeighteen", context.OverEighteen.ToString()));
context.Properties = properties;
await Options.Provider.Authenticated(context);
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
logger.WriteError(ex.Message);
}
return(new AuthenticationTicket(null, properties));
}
protected override async Task <AuthenticationTicket> AuthenticateCoreAsync( )
{
_logger.WriteVerbose("AuthenticateCoreAsync");
AuthenticationProperties properties = null;
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("state");
if (values != null && values.Count == 1)
{
state = values[0];
}
properties = Options.StateDataFormat.Unprotect(state);
if (properties == null)
{
return(null);
}
var redirectUri = string.Format("{0}://{1}{2}{3}",
Request.Scheme, Request.Host, RequestPathBase, Options.ReturnEndpointPath);
var scopes = string.Join(" ", Options.Scope);
var tokenRequestParameters = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("client_id", Options.ClientId),
new KeyValuePair <string, string>("client_secret", Options.ClientSecret),
new KeyValuePair <string, string>("redirect_uri", redirectUri),
new KeyValuePair <string, string>("scope", scopes),
};
var requestContent = new FormUrlEncodedContent(tokenRequestParameters);
_httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", "{0}:{1}".With(Options.ClientId, Options.ClientSecret).ToBase64String( ));
var response =
await _httpClient.PostAsync(TokenUri, requestContent, Request.CallCancelled);
response.EnsureSuccessStatusCode( );
var oauthTokenResponse = await response.Content.ReadAsStringAsync( );
var oauth2Token = ParseTokenResponse(oauthTokenResponse);
var accessToken = oauth2Token["access_token"];
if (string.IsNullOrWhiteSpace(accessToken))
{
_logger.WriteWarning("Access token was not found");
return(new AuthenticationTicket(null, properties));
}
var testUri = AccountUri + "?access_token=" + Uri.EscapeDataString(accessToken) +
"&oauth_token=" + Options.ClientSecret + "&oauth_consumer_key=" + Options.ClientId;
_httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("bearer", accessToken);
var graphResponse = await _httpClient.GetAsync(testUri, Request.CallCancelled);
graphResponse.EnsureSuccessStatusCode( );
var accountString = await graphResponse.Content.ReadAsStringAsync( );
var accountInformation = JObject.Parse(accountString);
var context = new RedditAuthenticatedContext(Context, accountInformation, accessToken);
context.Identity = new ClaimsIdentity(
new[]
{
new Claim(ClaimTypes.NameIdentifier, context.Id, Schema, Options.AuthenticationType),
new Claim(ClaimTypes.Name, context.Username, Schema, Options.AuthenticationType),
new Claim("urn:reddit:id", context.Id, Schema, Options.AuthenticationType),
new Claim("urn:reddit:name", context.Username, Schema, Options.AuthenticationType),
},
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType);
await Options.Provider.Authenticated(context);
properties.RedirectUri = RedditAuthenticationHandler.ReturnUri;
context.Properties = properties;
return(new AuthenticationTicket(context.Identity, context.Properties));
} catch (Exception ex) {
_logger.WriteWarning("Authentication failed", ex);
return(new AuthenticationTicket(null, properties));
}
}
