public async Task Handle(ExternalSignInContext externalSignInContext)
{
var properties = externalSignInContext.AuthenticationProperties;
var clientFactory = externalSignInContext.HttpClientFactory;
var requestLocalizer = externalSignInContext.RequestLocalizer;
var externalSignInHandler = externalSignInContext.Context;
var user = externalSignInContext.User;
var requestServices = externalSignInContext.RequestServices;
var providerKey = properties.Items["providerKey"];
// 首先获取OpenId
var openIdEndpoint = QueryHelpers.AddQueryString(QQDefaults.OpenIdEndpoint,
"access_token", providerKey);
var backchannel = clientFactory.CreateClient();
var openIdResponse = await backchannel.GetAsync(openIdEndpoint);
var openIdContent = await openIdResponse.Content.ReadAsStringAsync();
openIdContent = openIdContent.TrimStart("callback( ").TrimEnd(" );\n");
var openIdPayload = JObject.Parse(openIdContent);
// 存储openid，绑定到系统的用户，作为系统在第三方的唯一标识
var openId = openIdPayload["openid"].Value <string>();
var clientId = openIdPayload["client_id"].Value <string>();
var tokenRequestParameters = new Dictionary <string, string>()
{
{ "access_token", providerKey },
{ "oauth_consumer_key", clientId },
{ "openid", openId },
};
var endpoint = QueryHelpers.AddQueryString(QQDefaults.UserInformationEndpoint, tokenRequestParameters);
var requestMessage = new HttpRequestMessage(HttpMethod.Get, endpoint);
requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var response = await backchannel.SendAsync(requestMessage);
var userInfoPayload = JsonDocument.Parse(await response.Content.ReadAsStringAsync());
var ret = userInfoPayload.RootElement.GetString("ret").ToInt();
if (ret < 0)
{
throw ApiException.Common(requestLocalizer[userInfoPayload.RootElement.GetString("msg")]);
}
var options = requestServices.GetRequiredService <IOptionsMonitor <QQOptions> >().CurrentValue;
var identity = user.Identity as ClaimsIdentity;
externalSignInHandler.RunClaimActions(options.ClaimActions, identity, userInfoPayload.RootElement);
identity?.AddClaim(new Claim(OAuthSignInAuthenticationDefaults.Sub, openId));
}
protected override async Task HandleSignInAsync(ClaimsPrincipal user, AuthenticationProperties properties)
{
var scheme = properties.Items["scheme"];
//var providerKey = properties.Items["providerKey"];
var externalSignInContext = new ExternalSignInContext(_clientFactory, this, this.Context.RequestServices, _requestLocalizer, user, properties);
foreach (var handler in _handlers)
{
if (handler.CheckName(scheme))
{
await handler.Handle(externalSignInContext);
break;
}
}
await Context.SignInAsync(OAuthSignInAuthenticationDefaults.AuthenticationScheme, user, properties);
}