public virtual Task Authenticated(StackExchangeAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
public virtual Task Authenticated(StackExchangeAuthenticatedContext context)
{
return OnAuthenticated(context);
}
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;
string tokenRequest = "client_id=" + Uri.EscapeDataString(Options.ClientId) +
"&client_secret=" + Uri.EscapeDataString(Options.ClientSecret) +
"&code=" + Uri.EscapeDataString(code) +
"&redirect_uri=" + Uri.EscapeDataString(redirectUri);
HttpRequestMessage _httpRequest = new HttpRequestMessage();
HttpResponseMessage tokenResponse = await _httpClient.PostAsync(TokenEndpoint + "?" + tokenRequest, _httpRequest.Content, Request.CallCancelled);
tokenResponse.EnsureSuccessStatusCode();
string text = await tokenResponse.Content.ReadAsStringAsync();
IFormCollection form = WebHelpers.ParseForm(text);
string accessToken = form["access_token"];
string expires = form["expires"];
HttpResponseMessage graphResponse = await _httpClient.GetAsync(
ApiEndpoint + "?access_token=" + Uri.EscapeDataString(accessToken) +
"&site=" + Uri.EscapeDataString(Options.Site) +
"&key=" + Uri.EscapeDataString(Options.Key), Request.CallCancelled);
graphResponse.EnsureSuccessStatusCode();
Stream rawStream = await graphResponse.Content.ReadAsStreamAsync();
using (GZipStream gzipStream = new GZipStream(rawStream, CompressionMode.Decompress))
using (StreamReader streamReader = new StreamReader(gzipStream))
{
text = await streamReader.ReadToEndAsync();
}
JObject info = JObject.Parse(text);
JToken items = info["items"];
JToken userToken = items.First;
JObject user = userToken as JObject;
var context = new StackExchangeAuthenticatedContext(Context, user, accessToken, expires);
context.Identity = new ClaimsIdentity(
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType);
if (!string.IsNullOrEmpty(context.UserId))
{
context.Identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, context.UserId, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.DisplayName))
{
context.Identity.AddClaim(new Claim(ClaimsIdentity.DefaultNameClaimType, context.DisplayName, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Email))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Email, context.Email, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.AccountId))
{
context.Identity.AddClaim(new Claim("urn:stackexchange:accountId", context.AccountId, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Link))
{
context.Identity.AddClaim(new Claim("urn:stackexchange:link", context.Link, 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);
}
return(new AuthenticationTicket(null, properties));
}
