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Handle 4game redirects #23

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Merged
kis1yi merged 1 commit into from
Sep 9, 2026
Merged

Handle 4game redirects #23

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70 changes: 46 additions & 24 deletions Plugins/RSBot.General/Components/RuSroAuthService.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,10 @@ internal static class RuSroAuthService
private const string AuthorizeEndpoint = "https://webbff.ru.4game.ru/oauth/authorize";
private const string TokenEndpoint = "https://launcherbff.ru.4game.com/connect/token";

internal const string BrowserUserAgent =
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36";
private const string BrowserAcceptLanguage = "ru-RU,ru;q=0.9,en-US;q=0.8,en;q=0.7";

private const string HardwareIdConfigKey = "RSBot.RuSro.hwid";
private const string LauncherIdConfigKey = "RSBot.RuSro.launcherid";
private const string AccessTokenConfigKey = "RSBot.RuSro.accessToken";
Expand All @@ -43,8 +47,7 @@ internal static class RuSroAuthService
private const string EmailRequestGroupIdConfigKey = "RSBot.RuSro.emailRequestGroupId";
private const string EmailCodeRequestedAtConfigKey = "RSBot.RuSro.emailCodeRequestedAt";
private const int EmailCodeResendDelaySeconds = 30;
private const int MaxCaptchaAttempts = 2;

private const int MaxAuthPageRedirects = 10;
private const string Chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

public static async Task<bool> Auth()
Expand Down Expand Up @@ -265,8 +268,9 @@ private static HttpClient CreateAuthClient(string trackingId, out CookieContaine
handler.Proxy = proxyConfig.CreateWebProxy();

var authClient = new HttpClient(handler);
authClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", BrowserUserAgent);
authClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "application/json, text/plain, */*");
authClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Language", "ru");
authClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Language", BrowserAcceptLanguage);
return authClient;
}

Expand All @@ -285,32 +289,36 @@ string state
+ $"&back={Uri.EscapeDataString(BackUri)}";

var requestUri = new Uri(url);
for (int captchaAttempt = 0; ; captchaAttempt++)
Uri currentUri = requestUri;
Uri captchaUri;
for (int redirectCount = 0; ; redirectCount++)
{
Uri captchaUri;
using (HttpResponseMessage response = await authClient.GetAsync(requestUri))
{
if (response.IsSuccessStatusCode)
return true;
using HttpResponseMessage response = await authClient.GetAsync(currentUri);

if (!TryGetCaptchaRedirect(response, requestUri, out captchaUri))
{
string content = await response.Content.ReadAsStringAsync();
throw CreateRequestException("Opening the 4game authorization page", response.StatusCode, content);
}
if (response.IsSuccessStatusCode)
return true;

if (TryGetCaptchaRedirect(response, currentUri, out captchaUri))
break;

if (!TryGetRedirectUri(response, currentUri, out Uri redirectUri) || !IsSameOrigin(requestUri, redirectUri))
{
string content = await response.Content.ReadAsStringAsync();
throw CreateRequestException("Opening the 4game authorization page", response.StatusCode, content);
}

if (captchaAttempt >= MaxCaptchaAttempts)
if (redirectCount >= MaxAuthPageRedirects)
{
throw new InvalidOperationException(
$"4game requested verification more than {MaxCaptchaAttempts} times."
$"Opening the 4game authorization page exceeded {MaxAuthPageRedirects} redirects."
);
}

Log.Notify("4game requires additional verification. Complete it in the opened window.");
if (!await CaptchaWindow.ShowAsync(captchaUri, requestUri, cookieContainer))
return false;
currentUri = redirectUri;
}

Log.Notify("4game requires additional verification. Complete it in the opened window.");
return await CaptchaWindow.ShowAsync(captchaUri, requestUri, cookieContainer);
}

private static async Task<string> SendAuthJsonRequestAsync(
Expand Down Expand Up @@ -639,13 +647,9 @@ private static bool IsRedirect(HttpStatusCode statusCode)

private static bool TryGetCaptchaRedirect(HttpResponseMessage response, Uri requestUri, out Uri captchaUri)
{
captchaUri = null;
if (!IsRedirect(response.StatusCode) || response.Headers.Location == null)
if (!TryGetRedirectUri(response, requestUri, out captchaUri))
return false;

Uri location = response.Headers.Location;
captchaUri = location.IsAbsoluteUri ? location : new Uri(requestUri, location);

bool isCaptcha =
string.Equals(captchaUri.Scheme, Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase)
&& string.Equals(captchaUri.Host, "id.4game.ru", StringComparison.OrdinalIgnoreCase)
Expand All @@ -661,6 +665,24 @@ private static bool TryGetCaptchaRedirect(HttpResponseMessage response, Uri requ
return isCaptcha;
}

private static bool TryGetRedirectUri(HttpResponseMessage response, Uri requestUri, out Uri redirectUri)
{
redirectUri = null;
if (!IsRedirect(response.StatusCode) || response.Headers.Location == null)
return false;

Uri location = response.Headers.Location;
redirectUri = location.IsAbsoluteUri ? location : new Uri(requestUri, location);
return true;
}

private static bool IsSameOrigin(Uri expectedOrigin, Uri uri)
{
return string.Equals(expectedOrigin.Scheme, uri.Scheme, StringComparison.OrdinalIgnoreCase)
&& string.Equals(expectedOrigin.Host, uri.Host, StringComparison.OrdinalIgnoreCase)
&& expectedOrigin.Port == uri.Port;
}

private static string GetQueryParameter(Uri uri, string name)
{
foreach (string pair in uri.Query.TrimStart('?').Split('&', StringSplitOptions.RemoveEmptyEntries))
Expand Down
18 changes: 14 additions & 4 deletions Plugins/RSBot.General/Views/CaptchaWindow.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,7 @@ private CaptchaWindow(Uri captchaUri, Uri returnUri, CookieContainer cookieConta
Enabled = false,
Margin = new Padding(8, 0, 0, 0),
Size = new Size(110, 32),
Text = "Continue",
Text = "Check",
};
_continueButton.Click += ContinueButton_Click;

Expand Down Expand Up @@ -277,6 +277,7 @@ private static void ConfigureWebView2Loader()

private void ConfigureBrowser()
{
_webView.CoreWebView2.Settings.UserAgent = RuSroAuthService.BrowserUserAgent;
_webView.CoreWebView2.Settings.AreDefaultContextMenusEnabled = false;
_webView.CoreWebView2.Settings.AreDevToolsEnabled = false;
_webView.CoreWebView2.Settings.IsStatusBarEnabled = false;
Expand Down Expand Up @@ -315,16 +316,25 @@ private async void WebView_NavigationCompleted(object sender, CoreWebView2Naviga
if (!e.IsSuccess)
{
_statusLabel.Text = $"The verification page failed to load ({e.WebErrorStatus}).";
_continueButton.Enabled = true;
return;
}

if (IsReturnUri(_webView.Source))
if (IsReturnUri(_webView.Source) && e.HttpStatusCode is >= 200 and <= 299)
{
await CompleteAsync();
return;
}

_continueButton.Enabled = true;
_statusLabel.Text = "Complete the verification. Click Check if the page does not continue automatically.";
}

private async void ContinueButton_Click(object sender, EventArgs e)
private void ContinueButton_Click(object sender, EventArgs e)
{
await CompleteAsync();
_continueButton.Enabled = false;
_statusLabel.Text = "Checking the verification result...";
_webView.CoreWebView2.Navigate(_returnUri.AbsoluteUri);
}

private async Task CompleteAsync()
Expand Down
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