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];
}
if (!ValidateStateId(state, out properties))
{
return(null);
}
// OAuth2 10.12 CSRF
if (!ValidateCorrelationId(properties, _logger))
{
return(new AuthenticationTicket(null, properties));
}
var tokenRequestParameters = new List <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>("appid", Options.AppId),
new KeyValuePair <string, string>("secret", Options.AppSecret),
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("grant_type", "authorization_code"),
};
var requestContent = new FormUrlEncodedContent(tokenRequestParameters);
// 通过code获取access_token
HttpResponseMessage response = await _httpClient.PostAsync(TokenEndpoint, requestContent, Request.CallCancelled);
response.EnsureSuccessStatusCode();
string oauthTokenResponse = await response.Content.ReadAsStringAsync();
JObject oauth2Token = JObject.Parse(oauthTokenResponse);
var accessToken = oauth2Token["access_token"].Value <string>();
// Refresh token is only available when wl.offline_access is request.
// Otherwise, it is null.
var refreshToken = oauth2Token.Value <string>("refresh_token");
var expire = oauth2Token.Value <string>("expires_in");
if (string.IsNullOrWhiteSpace(accessToken))
{
_logger.WriteWarning("Access token was not found");
return(new AuthenticationTicket(null, properties));
}
var openId = oauth2Token.Value <string>("openid");
var scope = oauth2Token.Value <string>("scope");
var unionId = oauth2Token.Value <string>("unionid");
// 获取用户信息
var userInfoResponse = await _httpClient.GetAsync(string.Format(UserInfoEndpoint + "?access_token={0}&openid={1}", Uri.EscapeDataString(accessToken), Uri.EscapeDataString(openId)), Request.CallCancelled);
userInfoResponse.EnsureSuccessStatusCode();
string userInfoResponseString = await userInfoResponse.Content.ReadAsStringAsync();
JObject userInformation = JObject.Parse(userInfoResponseString);
_logger.WriteInformation(userInfoResponseString);
var context = new WeixinAuthenticatedContext(Context, userInformation, accessToken, refreshToken, expire);
context.Identity = new ClaimsIdentity(new[] {
new Claim(ClaimTypes.Name, WeixinSecurityConstants.DefaultAuthenticationType, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim(ClaimTypes.Surname, context.OpenId, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim(ClaimTypes.NameIdentifier, context.OpenId, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim(CommonClaimType.NickName, context.Nickame, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim(CommonClaimType.Avatar, context.HeadimgUrl, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim(WeixinSecurityConstants.WeixinClaimType, userInformation.ToString(), "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
},
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType);
await Options.Provider.Authenticated(context);
context.Properties = properties;
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
_logger.WriteError("Authentication failed", ex);
return(new AuthenticationTicket(null, properties));
}
}
///// <summary>
///// Called when a Challenge causes a redirect to authorize endpoint
///// </summary>
//public void ApplyRedirect(WeixinApplyRedirectContext context)
//{
// OnApplyRedirect(context);
//}
/// <summary>
/// Invoked whenever succesfully authenticates a user
/// </summary>
public Task Authenticated(WeixinAuthenticatedContext context)
{
return(OnAuthenticated(context));
}