protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
_logger.WriteVerbose("AuthenticateCore");
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);
}
string tokenEndpoint = "https://oauth.vk.com/access_token";
string requestPrefix = Request.Scheme + "://" + Request.Host;
string redirectUri = requestPrefix + Request.PathBase + Options.ReturnEndpointPath;
string tokenRequest =
"?client_id=" + Uri.EscapeDataString(Options.AppId) +
"&client_secret=" + Uri.EscapeDataString(Options.AppSecret) +
"&code=" + Uri.EscapeDataString(code) +
"&redirect_uri=" + Uri.EscapeDataString(redirectUri);
HttpResponseMessage tokenResponse = await _httpClient.GetAsync(tokenEndpoint + tokenRequest, Request.CallCancelled);
tokenResponse.EnsureSuccessStatusCode();
string text = await tokenResponse.Content.ReadAsStringAsync();
var form = JsonConvert.DeserializeObject <Dictionary <string, object> >(text);
var accessToken = (string)form["access_token"];
var userId = (long)form["user_id"];
string graphApiEndpoint = "https://api.vk.com/method/users.get" +
"?user_id=" + userId +
"&fields=" +
"&name_case=Nom" +
"&access_token=" + Uri.EscapeDataString(accessToken);
HttpResponseMessage graphResponse = await _httpClient.GetAsync(graphApiEndpoint, Request.CallCancelled);
graphResponse.EnsureSuccessStatusCode();
text = await graphResponse.Content.ReadAsStringAsync();
JObject data = JObject.Parse(text);
var user = (JObject)data["response"].First;
var context = new VkAuthenticatedContext(Context, user, accessToken);
context.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.UserName))
{
context.Identity.AddClaim(new Claim(ClaimsIdentity.DefaultNameClaimType, context.UserName, 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));
}
public virtual Task Authenticated(VkAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
