C#模拟百度登录并到指定网站评论回帖（三）

2019-11-14 15:49:03

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　　上次说到怎么获取BAIDUID，这个相信很多人都能够拿到就不多说了，今天一连说两个，获取token和raskey

　　2、利用以上获得的cookie直接访问页面

https://passport.baidu.com/v2/api/?getapi&tpl=zongheng&apiver=v3&tt=1441287460704&class=login&gid=26D2A76-9D6C-4EBE-8687-25C6591194B2&logintype=basicLogin&callback=bd__cbs__v9tdyy获取参数token

在第一篇文章中写到这个，拿着我们储存到的BAIDUID直接请求这个页面，就能够获取到反馈回来的Json格式的数据

这里的话需要用到一个dll，添加引用到项目【Newtonsoft.Json】

至于这个文档怎么用，已经有其他前辈的博文中说到，我这里就不解释了，如果不懂的可以在后面看代码

如果你拿不到token，那么只有一个问题，你没有BAIDUID，如果你确认第一次是收集到了，那么请重复检验在请求token时这个Cookies是否还存在。（很多时候是Cookies的效期问题导致Cookies收集器将失效的BAIDUID自动丢弃)

　　有了前面的步骤，拿到raskey也就很简单了，步骤是一样的，将前面所有的Cookies都保存下来，接下来

　　3、用token访问该地址，获取raskeyhttps://passport.baidu.com/v2/getpublickey?token=5d0fc87cb0de39982c06795d3356e239&tpl=zongheng&apiver=v3&tt=1441311621601&gid=59723A6-1178-4614-B7AF-779917BC4453&callback=bd__cbs__gaci47和publickey，注意将地址中的值替换。

　　很明显，你会发现反馈回来的也是一个Json数据，但可以看到后面有一串以-----BEGIN PUBLIC KEY----- 开头以----End Public KEY----结尾的数据，那里面就是publickey，而紧跟在后的key后的字符串就是raskey，用上面同样的办法拿到这两组数据，切记前一组要将开头和结尾的标识字符串也要截取出来，而不是单纯的乱字符串。

　　现在算一下我们拿到的东西：3个页面的Cookies、token、publickey、raskey

这几个都齐全了，那么就可以向百度提交post请求登录，但在这之前，你需要准备一串经过ras加密过后的密码，否则会一直提示密码错误，也就是err_7。

这块需要添加另外一个引用【BouncyCastle.Crypto.dll】这是哪个大神写的就不清楚了，但非常实用，很感谢这些大神做出的贡献。之后添加一个类：

Newtonsoft.Json.Net35.dll（Josn数据解析）

BouncyCastle.Crypto.dll

using System;

using System.IO;

using System.Security.Cryptography;

using System.Text;

using Org.BouncyCastle.Crypto;

using Org.BouncyCastle.Crypto.Parameters;

using Org.BouncyCastle.OpenSsl;

using Org.BouncyCastle.Security;

namespace 纵横小说自动评论

{

/// <summary>

/// rsakey密码加密帮助

/// </summary>

public class RsaHelper

{

public static string PemToxml(string pem)

{

if (pem.StartsWith("-----BEGIN RSA PRIVATE KEY-----")

|| pem.StartsWith("-----BEGIN PRIVATE KEY-----"))

{

return GetXmlRsaKey(pem, obj =>

{

if ((obj as RsaPrivateCrtKeyParameters) != null)

return DotNetUtilities.ToRSA((RsaPrivateCrtKeyParameters)obj);

var keyPair = (AsymmetricCipherKeyPair)obj;

return DotNetUtilities.ToRSA((RsaPrivateCrtKeyParameters)keyPair.Private);

}, rsa => rsa.ToXmlString(true));

}

if (pem.StartsWith("-----BEGIN PUBLIC KEY-----"))

{

return GetXmlRsaKey(pem, obj =>

{

var publicKey = (RsaKeyParameters)obj;

return DotNetUtilities.ToRSA(publicKey);

}, rsa => rsa.ToXmlString(false));

}

throw new InvalidKeyException("Unsupported PEM format...");

}

private static string GetXmlRsaKey(string pem, Func<object, RSA> getRsa, Func<RSA, string> getKey)

{

using (var ms = new MemoryStream())

using (var sw = new StreamWriter(ms))

using (var sr = new StreamReader(ms))

{

sw.Write(pem);

sw.Flush();

ms.Position = 0;

var pr = new PemReader(sr);

object keyPair = pr.ReadObject();

using (RSA rsa = getRsa(keyPair))

{

var xml = getKey(rsa);

return xml;

}

/// <summary>

/// RSA加密

/// </summary>

/// <param name="publickey"></param>

/// <param name="content"></param>

/// <returns></returns>

public static string RSAEncrypt(string publickey, string content)

{

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

byte[] cipherbytes;

rsa.FromXmlString(publickey);

cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);

return Convert.ToBase64String(cipherbytes);

}

/// <summary>

/// RSA解密

/// </summary>

/// <param name="privatekey"></param>

/// <param name="content"></param>

/// <returns></returns>

public static string RSADecrypt(string privatekey, string content)

{

privatekey =

@"<RSAKeyValue><Modulus>5m9m14XH3oqLJ8bNGw9e4rGpXpcktv9MSkHSVFVMjHbfv+SJ5v0ubQQxa5YjLN4vc49z7SVju8s0X4gZ6AzZTn06jzWOgyPRV54Q4I0DCYadWW4Ze3e+BOtwgVU1Og3qHKn8vygoj40J6U85Z/PTJu3hN1m75Zr195ju7g9v4Hk=</Modulus><Exponent>AQAB</Exponent><P>/hf2dnK7rNfl3lbqghWcpFdu778hUpIEBixCDL5WiBtpkZdpSw90aERmHJYaW2RGvGRi6zSftLh00KHsPcNUMw==</P><Q>6Cn/jOLrPapDTEp1Fkq+uz++1Do0eeX7HYqi9rY29CqShzCeI7LEYOoSwYuAJ3xA/DuCdQENPSoJ9KFbO4Wsow==</Q><DP>ga1rHIJro8e/yhxjrKYo/nqc5ICQGhrpMNlPkD9n3CjZVPOISkWF7FzUHEzDANeJfkZhcZa21z24aG3rKo5Qnw==</DP><DQ>MNGsCB8rYlMsRZ2ek2pyQwO7h/sZT8y5ilO9wu08Dwnot/7UMiOEQfDWstY3w5XQQHnvC9WFyCfP4h4QBissyw==</DQ><InverseQ>EG02S7SADhH1EVT9DD0Z62Y0uY7gIYvxX/uq+IzKSCwB8M2G7Qv9xgZQaQlLpCaeKbux3Y59hHM+KpamGL19Kg==</InverseQ><D>vmaYHEbPAgOJvaEXQl+t8DQKFT1fudEysTy31LTyXjGu6XiltXXHUuZaa2IPyHgBz0Nd7znwsW/S44iql0Fen1kzKioEL3svANui63O3o5xdDeExVM6zOf1wUUh/oldovPweChyoAdMtUzgvCbJk1sYDJf++Nr0FeNW1RB1XG30=</D></RSAKeyValue>";

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

byte[] cipherbytes;

rsa.FromXmlString(privatekey);

cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);

return Encoding.UTF8.GetString(cipherbytes);

}

}好了，用这个类将密码加密后就Post所有数据吧，下面是具体实现代码

//获取token
        private Regex _regex = new Regex(@"/{.*/}", RegexOptions.IgnoreCase);
        /// <summary>
        /// 根据BAIDUID获取token
        /// </summary>
        public string GetToken()
        {
            HttpCookie cookie = new HttpCookie("BDRCVFR[gltLrB7qNCt]");
            cookie.Value = "mk3SLVN4HKm";
            cookie.Expires = DateTime.Now.AddDays(1);
           string url_getToken = string.Format("https://passport.baidu.com/v2/api/?getapi&tpl=zongheng&apiver=v3&tt={0}&class=login&gid=0743012-DD22-4632-B84E-B054B933DDA0&logintype=basicLogin&callback=bd__cbs__xjugf7", Utility.GetTimeStamp());
           string token_get = helper.GetPageResponse_Get(url_getToken, Utility.UrlDecode("http://passport.zongheng.com/?location=http%3A%2F%2Fwww.zongheng.com%2F"), "*/*");
           if (_regex.IsMatch(token_get))
               token_get = _regex.Match(token_get).Value;
           var resultToken = JsonConvert.DeserializeObject<ResultToken>(token_get);
            if (string.IsNullOrEmpty(resultToken.Data.Token))
            {
                ShowLog("Parameter-:获取token=" + resultToken.Data.Token + "失败/n");
                return null;
            }
            return resultToken.Data.Token;
        }
        //获取raskey
        public string GetRasKey(string token)
        {
            string url_RasKey = string.Format("https://passport.baidu.com/v2/getpublickey?token={0}&tpl=zongheng&apiver=v3&tt={1}&gid=399423B-A0F5-42A0-B07F-CC5290F8F95D&callback=bd__cbs__xjugf7", token, Utility.GetTimeStamp());
            string publicKey = helper.GetPageResponse_Get(url_RasKey, Utility.UrlDecode("http://passport.zongheng.com/?location=http%3A%2F%2Fwww.zongheng.com%2F"), "*/*");
            //获取raskey
            if (_regex.IsMatch(publicKey))
                publicKey = _regex.Match(publicKey).Value;
            var result_publicKey = JsonConvert.DeserializeObject<PublicRsaKey>(publicKey);
            var rsakey = result_publicKey.Key;
            //将密码加密
            var pemToXml = RsaHelper.PemToXml(result_publicKey.Pubkey);
            pwd = RsaHelper.RSAEncrypt(pemToXml, pwd);
            //日志
            if (!string.IsNullOrEmpty(rsakey))
                return rsakey;
                ShowLog("Parameter-:获取publickey=" + result_publicKey.Pubkey + "失败!");
                ShowLog("Parameter-:获取raskey=" + rsakey + "失败!");
                return null;
        }/// <summary>
        /// 登录实现
        /// </summary>
        public LoginStatus Login(string verifycode, string codestring, string token, string raskey, int userIndex)
        {
            string loginresult = "";
            string url_Post = "https://passport.baidu.com/v2/api/?login";
           long tt= Utility.GetTimeStamp();
            string postData = string.Format("verifycode={0}&username={1}&u=http://zongheng.baidu.com/sendbduss.do?source=0&location=http%3A%2F%2Fwww.zongheng.com%2F&_t={2}&tt={3}&tpl=zongheng&token={4}&staticpage=http://passport.zongheng.com/v3Jump.html&safeflg=0&rsakey={5}&quick_user=0&ppui_logintime=20266&passWord={6}&mem_pass=on&logLoginType=pc_loginBasic&logintype=basicLogin&loginmerge=true&isPhone=false&gid=0743012-DD22-4632-B84E-B054B933DDA0&detect=1&crypttype=12&codestring={7}&charset=utf-8&callback=parent.bd__pcbs__ok0875&apiver=v3", verifycode, HttpUtility.UrlEncode(userName), tt,tt, HttpUtility.UrlEncode(token), HttpUtility.UrlEncode(raskey), HttpUtility.UrlEncode(pwd), codestring);
            loginresult =helper.GetPageResponse_Post(url_Post, postData, Utility.UrlDecode("http://passport.zongheng.com/?location=http%3A%2F%2Fwww.zongheng.com%2F"));
            //分析loginresult
            string err = @"(?<=err_no=)[^&]+?(?=&)";
            Match regx = Regex.Match(loginresult, err);
            string codestr = "(?<=codeString=)[^&]+?(?=&)";
            string codetype = "(?<=vcodetype=)[^&]+?(?=&)";
            Match regx2 = Regex.Match(loginresult, codestr);
            Match regx3 = Regex.Match(loginresult, codetype);
            string errno = regx.Value;
            _codestring = regx2.Value;
            vcodeType= regx3.Value;
            //根据返回的错误号提示信息，并且请求验证码
               switch (errno)
               {
                   case "257":
                       return LoginStatus.codeGet;
                   case "7": ShowLog("账号或密码错误...");
                       ChangeStauts("失败", userIndex);
                       return LoginStatus.loginFail;;
                   case "0": ShowLog("登录成功...");
                       ChangeStauts("成功", userIndex);
                       break;
                   default: ShowLog("未知错误...");
                       ChangeStauts("错误", userIndex);
                       return LoginStatus.Error;;
               }
               return LoginStatus.loginSucceed;
        }今天就到这里，明天说说验证码的问题，不过很大部分情况下，除非你的密码几次输入错误或者异地登录，不然一般不会让你输入验证码，如有问题欢迎评论交流

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