【net】.net 获取浏览器Cookie(包括HttpOnly)实例分享-Cookie-HttpOnly

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.net 获取浏览器Cookie(包括HttpOnly)实例分享

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Net;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Permissions;
using System.Text;

namespace CookieHandler
{
    /// <SUMMARY></SUMMARY>
    /// 取得WebBrowser的完整Cookie。
    /// 因为默认的webBrowser1.Document.Cookie取不到HttpOnly的Cookie
    /// IE7不兼容，IE8可以，其它未知
    ///
    public class FullWebBrowserCookie
    {
        public static Dictionary<string, string> GetCookieList(Uri uri, bool throwIfNoCookie)
        {
            Dictionary<string, string> dict=new Dictionary<string, string>();
            string cookie=GetCookieInternal(uri, throwIfNoCookie);
            Console.WriteLine("FullWebBrowserCookie - 所有cookie:" + cookie);
            string[] arrCookie=cookie.Split(';');
            foreach (var item in arrCookie)
            {
                string[] arr=item.Split('=');
                string key=arr[0].Trim();
                string val="";
                if (arr.Length >=2)
                {
                    val=arr[1].Trim();
                }

                if (!dict.ContainsKey(key))
                {
                    dict.Add(key, val);
                }
            }
            Console.WriteLine("FullWebBrowserCookie - cookie已载入dict，共" + dict.Count.ToString() + "项");

            return dict;
        }

        public static string GetCookieValue(string key, Uri uri, bool throwIfNoCookie)
        {
            Console.WriteLine("GetCookieValue");
            Dictionary<string, string> dict=GetCookieList(uri, throwIfNoCookie);

            if (dict.ContainsKey(key))
            {
                return dict[key];
            }
            return "";
        }

        [SecurityCritical]
        public static string GetCookieInternal(Uri uri, bool throwIfNoCookie)
        {
            Console.WriteLine("GetCookieInternal");

            uint pchCookieData=0;
            string url=UriToString(uri);
            uint flag=(uint)INativeMethods.InternetFlags.INTERNET_COOKIE_HTTPONLY;

            //Gets the size of the string builder     
            if (INativeMethods.InternetGetCookieEx(url, null, null, ref pchCookieData, flag, IntPtr.Zero))
            {
                pchCookieData++;
                StringBuilder cookieData=new StringBuilder((int)pchCookieData);

                //Read the cookie     
                if (INativeMethods.InternetGetCookieEx(url, null, cookieData, ref pchCookieData, flag, IntPtr.Zero))
                {
                    DemandWebPermission(uri);
                    return cookieData.ToString();
                }
            }

            int lastErrorCode=Marshal.GetLastWin32Error();

            if (throwIfNoCookie || (lastErrorCode !=(int)INativeMethods.ErrorFlags.ERROR_NO_MORE_ITEMS))
            {
                throw new Win32Exception(lastErrorCode);
            }

            return null;
        }

        private static void DemandWebPermission(Uri uri)
        {
            string uriString=UriToString(uri);

            if (uri.IsFile)
            {
                string localPath=uri.LocalPath;
                new FileIOPermission(FileIOPermissionAccess.Read, localPath).Demand();
            }
            else
            {
                new WebPermission(NetworkAccess.Connect, uriString).Demand();
            }
        }

        private static string UriToString(Uri uri)
        {
            if (uri==null)
            {
                throw new ArgumentNullException("uri");
            }

            UriComponents components=(uri.IsAbsoluteUri ? UriComponents.AbsoluteUri : UriComponents.SerializationInfoString);
            return new StringBuilder(uri.GetComponents(components, UriFormat.SafeUnescaped), 2083).ToString();
        }
    }
}

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