新增 DyQrCodeService，调用 sso.douyin.com 二维码接口； ConfigController 新增 qrcode/qrstatus/qrbind 三个接口； 前端账号列表每行增加"扫码登录"按钮，展示二维码弹窗并自动轮询绑定。 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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yuming
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using System.Collections.Concurrent;
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using System.Net;
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using Newtonsoft.Json.Linq;
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namespace dy.net.service
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{
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public class DyQrCodeService
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{
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private static readonly ConcurrentDictionary<string, QrSession> _sessions = new();
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private class QrSession
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{
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public CookieContainer CookieJar { get; set; } = new();
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public DateTime CreatedAt { get; set; } = DateTime.Now;
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public string? FinalCookies { get; set; }
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public string? SecUserId { get; set; }
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}
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private const string Fp = "kj5j6uhv_tvKYUFA0_qzgZ_4l9c_9Amt_DCywEfwbVFCJ";
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private const string NextUrl = "https://creator.douyin.com/content/manage";
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private const string Service = "https://creator.douyin.com";
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private const string Aid = "2906";
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private const string Ua = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36";
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private const string Referer = "https://creator.douyin.com/";
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public async Task<(string token, string qrBase64)> GetQrCodeAsync()
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{
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var jar = new CookieContainer();
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using var client = BuildClient(jar, autoRedirect: true);
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var url = $"https://sso.douyin.com/get_qrcode/?next={Uri.EscapeDataString(NextUrl)}&aid={Aid}&service={Uri.EscapeDataString(Service)}&is_vcd=1&fp={Fp}";
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var response = await client.GetStringAsync(url);
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var json = JObject.Parse(response);
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var token = json["data"]?["token"]?.ToString()
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?? throw new Exception("获取二维码失败：响应中无 token");
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var qrBase64 = json["data"]?["qrcode"]?.ToString()
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?? throw new Exception("获取二维码失败：响应中无图片");
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_sessions[token] = new QrSession { CookieJar = jar };
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CleanExpiredSessions();
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return (token, qrBase64);
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}
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public async Task<(int status, string? cookies, string? secUserId)> CheckStatusAsync(string token)
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{
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if (!_sessions.TryGetValue(token, out var session))
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return (-1, null, null);
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if (DateTime.Now - session.CreatedAt > TimeSpan.FromMinutes(10))
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{
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_sessions.TryRemove(token, out _);
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return (-1, null, null);
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}
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if (session.FinalCookies != null)
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return (3, session.FinalCookies, session.SecUserId);
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using var client = BuildClient(session.CookieJar, autoRedirect: false);
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var serviceParam = Uri.EscapeDataString($"{Service}/?logintype=user&loginapp=douyin&jump={NextUrl}");
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var url = $"https://sso.douyin.com/check_qrconnect/?next={Uri.EscapeDataString(NextUrl)}&token={token}&service={serviceParam}&loginapp=douyin&jump={Uri.EscapeDataString(NextUrl)}&correct_service={serviceParam}&aid={Aid}&is_vcd=1&fp={Fp}";
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var response = await client.GetStringAsync(url);
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var json = JObject.Parse(response);
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var statusStr = json["data"]?["status"]?.ToString() ?? "1";
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int.TryParse(statusStr, out int statusCode);
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if (statusCode == 3)
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{
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var redirectUrl = json["data"]?["redirect_url"]?.ToString();
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if (!string.IsNullOrEmpty(redirectUrl))
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{
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try
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{
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using var followClient = BuildClient(session.CookieJar, autoRedirect: true);
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await followClient.GetAsync(redirectUrl);
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session.FinalCookies = ExtractCookieString(session.CookieJar);
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session.SecUserId = await GetSecUserIdAsync(session.CookieJar);
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}
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catch (Exception ex)
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{
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Serilog.Log.Error($"跟进登录重定向失败: {ex.Message}");
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}
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}
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}
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return (statusCode, session.FinalCookies, session.SecUserId);
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}
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public (string cookies, string secUserId) GetSessionResult(string token)
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{
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if (_sessions.TryGetValue(token, out var session))
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return (session.FinalCookies ?? "", session.SecUserId ?? "");
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return ("", "");
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}
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public void RemoveSession(string token) => _sessions.TryRemove(token, out _);
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private static HttpClient BuildClient(CookieContainer jar, bool autoRedirect)
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{
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var handler = new HttpClientHandler
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{
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CookieContainer = jar,
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AllowAutoRedirect = autoRedirect,
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UseCookies = true
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};
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var client = new HttpClient(handler);
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client.DefaultRequestHeaders.Add("User-Agent", Ua);
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client.DefaultRequestHeaders.Add("Referer", Referer);
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return client;
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}
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private static string ExtractCookieString(CookieContainer jar)
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{
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var domains = new[] { "https://www.douyin.com", "https://creator.douyin.com", "https://sso.douyin.com" };
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var all = new Dictionary<string, string>();
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foreach (var domain in domains)
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{
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foreach (Cookie c in jar.GetCookies(new Uri(domain)))
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all[c.Name] = c.Value;
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}
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return string.Join("; ", all.Select(kv => $"{kv.Key}={kv.Value}"));
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}
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private static async Task<string?> GetSecUserIdAsync(CookieContainer jar)
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{
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try
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{
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using var client = BuildClient(jar, autoRedirect: true);
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var resp = await client.GetStringAsync("https://creator.douyin.com/web/api/userinfo/");
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var json = JObject.Parse(resp);
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return json["data"]?["sec_uid"]?.ToString()
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?? json["data"]?["sec_user_id"]?.ToString()
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?? json["sec_uid"]?.ToString();
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}
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catch (Exception ex)
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{
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Serilog.Log.Error($"获取 sec_user_id 失败: {ex.Message}");
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return null;
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}
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}
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private static void CleanExpiredSessions()
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{
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var expired = _sessions
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.Where(kv => DateTime.Now - kv.Value.CreatedAt > TimeSpan.FromMinutes(10))
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.Select(kv => kv.Key).ToList();
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foreach (var key in expired)
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_sessions.TryRemove(key, out _);
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}
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}
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}
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