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c# 获取 httponly cookie

OC/C/C++ 水墨上仙 2642次浏览 已收录 手机上查看

c# 获取 httponly cookie

/// <summary>
/// WinInet.dll wrapper
/// </summary>
internal static class CookieReader
{
    /// <summary>
    /// Enables the retrieval of cookies that are marked as "HTTPOnly". 
    /// Do not use this flag if you expose a scriptable interface, 
    /// because this has security implications. It is imperative that 
    /// you use this flag only if you can guarantee that you will never 
    /// expose the cookie to third-party code by way of an 
    /// extensibility mechanism you provide. 
    /// Version:  Requires Internet Explorer 8.0 or later.
    /// </summary>
    private const int INTERNET_COOKIE_HTTPONLY = 0x00002000;
    [DllImport("wininet.dll", SetLastError = true)]
    private static extern bool InternetGetCookieEx(
        string url,
        string cookieName,
        StringBuilder cookieData,
        ref int size,
        int flags,
        IntPtr pReserved);
    /// <summary>
    /// Returns cookie contents as a string
    /// </summary>
    /// <param name="url"></param>
    /// <returns></returns>
    public static string GetCookie(string url)
    {
        int size = 512;
        StringBuilder sb = new StringBuilder(size);
        if (!InternetGetCookieEx(url, null, sb, ref size, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero))
        {
            if (size < 0)
            {
                return null;
            }
            sb = new StringBuilder(size);
            if (!InternetGetCookieEx(url, null, sb, ref size, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero))
            {
                return null;
            }
        }
        return sb.ToString();
    }
}


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