protected override async Task <AuthenticationTicket> CreateTicketAsync(ClaimsIdentity identity, AuthenticationProperties properties, OAuthTokenResponse tokens)
{
if (identity == null)
{
throw new ArgumentNullException(nameof(identity));
}
if (tokens == null)
{
throw new ArgumentNullException(nameof(tokens));
}
OAuthCreatingTicketContext context = null;
if (Options.Scope.First() == WeChatScopes.snsapi_userinfo)
{
var url = Options.UserInformationEndpoint +
$"?access_token={UrlEncoder.Default.Encode(tokens.AccessToken)}" +
$"&openid={UrlEncoder.Default.Encode(tokens.Response.RootElement.GetString("openid"))}" +
$"&lang=" + Options.Language;
var request = new HttpRequestMessage(HttpMethod.Get, url);
var response = await Backchannel.SendAsync(request, Context.RequestAborted);
var content = await response.Content.ReadAsStringAsync();
if (response.IsSuccessStatusCode)
{
var payload = JsonDocument.Parse(content);
context = new OAuthCreatingTicketContext(new ClaimsPrincipal(identity), properties, Context, Scheme, Options, Backchannel, tokens, payload.RootElement);
context.RunClaimActions(payload.RootElement);
}
else
{
var weChatException = new WeChatException("获取微信用户信息失败：HttpClient返回错误代码，" +
$"Status：{response.StatusCode}，Headers：{response.Headers.ToString()}，Body：{content}");
Logger.LogDebug(weChatException, "WeChatHandler CreateTicketAsync");
throw weChatException;
}
}
if (context == null)
{
context = new OAuthCreatingTicketContext(new ClaimsPrincipal(identity), properties, Context, Scheme, Options, Backchannel, tokens, tokens.Response.RootElement);
context.RunClaimActions(tokens.Response.RootElement);
}
await Events.CreatingTicket(context);
return(new AuthenticationTicket(context.Principal, context.Properties, Scheme.Name));
}
protected override async Task <OAuthTokenResponse> ExchangeCodeAsync(OAuthCodeExchangeContext context)
{
var tokenRequestParameters = new Dictionary <string, string>()
{
{ "appid", Options.ClientId },
{ "secret", Options.ClientSecret },
{ "code", context.Code },
{ "grant_type", "authorization_code" },
};
var requestContent = new FormUrlEncodedContent(tokenRequestParameters);
var requestMessage = new HttpRequestMessage(HttpMethod.Post, Options.TokenEndpoint);
requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
requestMessage.Content = requestContent;
var response = await Backchannel.SendAsync(requestMessage, Context.RequestAborted);
var content = await response.Content.ReadAsStringAsync();
if (response.IsSuccessStatusCode)
{
var payload = JsonDocument.Parse(content);
var errcode = payload.RootElement.GetString("errcode");
if (errcode != null)
{
var weChatException = new WeChatException("使用code换取access_token失败，content：" + content);
Logger.LogDebug(weChatException, "WeChatHandler ExchangeCodeAsync");
return(OAuthTokenResponse.Failed(weChatException));
}
return(OAuthTokenResponse.Success(payload));
}
else
{
var errorMessage = "使用code换取access_token失败：HttpClient返回错误代码，" +
$"Status：{response.StatusCode}，Headers：{response.Headers}，Body：{content}";
var ex = new Exception(errorMessage);
Logger.LogDebug(ex, "WeChatHandler ExchangeCodeAsync");
return(OAuthTokenResponse.Failed(ex));
}
}
