public static LoginResult Login(string username, string password, LoginCheckResult checkResult) { var result = new LoginResult(); try { using (var wc = new CookieAwareWebClient()) { wc.Cookies.Add(checkResult.baiduid); var ltoken = checkResult.ltoken; var lstr = "loginmerge=true&token=" + ltoken + "&tpl=netdisk&username="******"&password="******"&codestring=" + checkResult.codeString + "&verifycode=" + Uri.EscapeDataString(checkResult.verifyCode); } wc.Headers.Add(HttpRequestHeader.ContentType, "application/x-www-form-urlencoded"); var str = Encoding.UTF8.GetString(wc.UploadData("https://passport.baidu.com/v2/api/?login", Encoding.UTF8.GetBytes(lstr))); var match = Regex.Match(str, "error=(\\d+)"); var errno = match.Success ? int.Parse(match.Groups[1].Value) : 0; if (errno != 0) { result.exception = new Exception("Login returned error = " + errno); result.errno = errno; } else { str = wc.DownloadString("https://passport.baidu.com/v3/login/api/auth/?return_type=3&tpl=netdisk&u=http%3A%2F%2Fpan.baidu.com%2Fdisk%2Fhome"); long uid = 0; match = Regex.Match(str, "\"uk\"\\s*:\\s*(\\d+)"); if (match.Success) { long.TryParse(match.Groups[1].Value, out uid); } string baiduid = null, bduss = null, stoken = null; foreach (Cookie cookie in wc.Cookies.GetAllCookies()) { if (cookie.Name.ToLower() == "baiduid") { baiduid = cookie.Value; } else if (cookie.Name.ToLower() == "bduss") { bduss = cookie.Value; } else if (cookie.Name.ToLower() == "stoken" && cookie.Domain.ToLower().Contains("pan.")) { stoken = cookie.Value; } } if (baiduid != null && bduss != null && stoken != null) { result.credential = new Credential(baiduid, bduss, stoken, uid); result.success = true; } else { result.exception = new Exception("Cannot find required cookies."); } } } } catch (Exception ex) { result.exception = ex; } return(result); }