• c#获取新浪微博登录cookie


      用新浪微博api收集数据有诸多限制,每小时只能调用官方api函数150次,认证也很麻烦。因此想通过爬网页的方式来收集数据。访问新浪微博用户网页首先需要登录,登录获取cookie后可直接获取网页数据,无需再次登录。获取登录cookie的方式具体如下:

    1)采用get的方式访问http://login.sina.com.cn/sso/prelogin.php?entry=miniblog&callback=sinaSSOController.preloginCallBack&user=账户&client=ssologin.js(v1.3.16),获取servertime和 nonce,用于之后的密码加密。注:账户值为登录新浪微博用户名的base64编码值。

    2)处理新浪微博用户密码psw。若hex_sha1(pwd)表示对pwd进行sha1处理,则新浪微博用户密码的处理方式表示为hex_sha1(hex_sha1(hex_sha1(psw)) + servertime + nonce)。

    3)采用post方式访问http://login.sina.com.cn/sso/login.php?client=ssologin.js(v1.3.16),并post如下数据:

     string str = "entry=weibo&gateway=1&from=&savestate=7&useticket=1&ssosimplelogin=1&su=" +
                    登录账户base64值 + "&service=miniblog&servertime=" + servertime + "&nonce=" + nonce + "&pwencode=wsse&sp=" + 密码处理值 + "&encoding=utf-8&url=" +
                    HttpUtility.UrlEncode("http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.sinaSSOController.feedBackUrlCallBack") +
                    "&returntype=META";

    4)如果登录成功,返回页面中retcode值为0;get方式访问网页中location.replace处的地址。

    保存这三次访问页面的cookie后下次再访问新浪微博用不再需要重新登录了。具体代码如下:

    static CookieContainer cc = new CookieContainer();

      public static int SinaLogin(string uid, string psw, CookieContainer cc)
            {

                string uidbase64 = Base64Code(uid); //处理登录账户 如***@**.com 
                string url = "http://login.sina.com.cn/sso/prelogin.php?entry=miniblog&callback=sinaSSOController.preloginCallBack&user="
                    + uidbase64 + "&client=ssologin.js(v1.3.16)";
                HttpWebRequest webRequest1 = (HttpWebRequest)WebRequest.Create(new Uri(url)); //获取servertime和 nonce
                webRequest1.CookieContainer = cc;
                HttpWebResponse response1 = (HttpWebResponse)webRequest1.GetResponse();
                StreamReader sr1 = new StreamReader(response1.GetResponseStream(), Encoding.UTF8);
                string res = sr1.ReadToEnd();
                int start = res.IndexOf("servertime");
                if (start < 0 || start >= res.Count()) return -1;
                int end = res.IndexOf(',', start);
                if (end < 0 || end >= res.Count()) return -1;
                string servertime = res.Substring(start + 12, end - start - 12);

                start = res.IndexOf("nonce");
                if (start < 0 || start >= res.Count()) return -1;
                end = res.IndexOf(',', start);
                if (end < 0 || end >= res.Count()) return -1;
                string nonce = res.Substring(start + 8, end - start - 9);

                string password = hex_sha1("" + hex_sha1(hex_sha1(psw)) + servertime + nonce); //处理新浪微博用户密码psw


                string str = "entry=weibo&gateway=1&from=&savestate=7&useticket=1&ssosimplelogin=1&su=" +
                    uidbase64 + "&service=miniblog&servertime=" + servertime + "&nonce=" + nonce + "&pwencode=wsse&sp=" + password + "&encoding=utf-8&url=" +
                    HttpUtility.UrlEncode("http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.sinaSSOController.feedBackUrlCallBack") +
                    "&returntype=META";
                byte[] bytes;
                ASCIIEncoding encoding = new ASCIIEncoding();
                bytes = encoding.GetBytes(str);
                // bytes = System.Text.Encoding.UTF8.GetBytes(HttpUtility.UrlEncode(str));
                HttpWebRequest webRequest2 = (HttpWebRequest)WebRequest.Create("http://login.sina.com.cn/sso/login.php?client=ssologin.js(v1.3.16)");
                webRequest2.Method = "POST";
                webRequest2.ContentType = "application/x-www-form-urlencoded";

                webRequest2.ContentLength = bytes.Length;
                webRequest2.CookieContainer = cc;
                Stream stream;
                stream = webRequest2.GetRequestStream();
                stream.Write(bytes, 0, bytes.Length);
                stream.Close();

                HttpWebResponse response2 = (HttpWebResponse)webRequest2.GetResponse();
                StreamReader sr2 = new StreamReader(response2.GetResponseStream(), Encoding.Default);
                string res2 = sr2.ReadToEnd();
                int pos = res2.IndexOf("retcode");
                if (pos < 0 || pos > res2.Count()) return -1;
                int retcode = -1;
                for (pos += 8; pos < 100 + res2.Count(); pos++)
                {
                    if (res2[pos] < '0' || res2[pos] > '9')
                    {
                        retcode = 0;
                        break;
                    }
                    else if (res2[pos] > '0' && res2[pos] <= '9')
                        break;
                }
                if (retcode == -1) return -1;

                start = res2.IndexOf("location.replace");
                end = res2.IndexOf("")", start);
                url = res2.Substring(start + 18, end - start - 18);
                HttpWebRequest webRequest3 = (HttpWebRequest)WebRequest.Create(new Uri(url));
                webRequest3.CookieContainer = cc;
                HttpWebResponse response3 = (HttpWebResponse)webRequest3.GetResponse();
                StreamReader sr3 = new StreamReader(response3.GetResponseStream(), Encoding.UTF8);
                res = sr3.ReadToEnd();


                foreach (Cookie cookie in response3.Cookies)
                {
                    cc.Add(cookie);
                }
                return 0;
            }

     //base64加密
            public static string Base64Code(string Message)
            {
                char[] Base64Code = new char[]{'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T', 
             'U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n', 
             'o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7', 
             '8','9','+','/','='};
                byte empty = (byte)0;
                System.Collections.ArrayList byteMessage = new System.Collections.ArrayList(System.Text.Encoding.Default.GetBytes(Message));
                System.Text.StringBuilder outmessage;
                int messageLen = byteMessage.Count;
                int page = messageLen / 3;
                int use = 0;
                if ((use = messageLen % 3) > 0)
                {
                    for (int i = 0; i < 3 - use; i++)
                        byteMessage.Add(empty);
                    page++;
                }
                outmessage = new System.Text.StringBuilder(page * 4);
                for (int i = 0; i < page; i++)
                {
                    byte[] instr = new byte[3];
                    instr[0] = (byte)byteMessage[i * 3];
                    instr[1] = (byte)byteMessage[i * 3 + 1];
                    instr[2] = (byte)byteMessage[i * 3 + 2];
                    int[] outstr = new int[4];
                    outstr[0] = instr[0] >> 2;
                    outstr[1] = ((instr[0] & 0x03) << 4) ^ (instr[1] >> 4);
                    if (!instr[1].Equals(empty))
                        outstr[2] = ((instr[1] & 0x0f) << 2) ^ (instr[2] >> 6);
                    else
                        outstr[2] = 64;
                    if (!instr[2].Equals(empty))
                        outstr[3] = (instr[2] & 0x3f);
                    else
                        outstr[3] = 64;
                    outmessage.Append(Base64Code[outstr[0]]);
                    outmessage.Append(Base64Code[outstr[1]]);
                    outmessage.Append(Base64Code[outstr[2]]);
                    outmessage.Append(Base64Code[outstr[3]]);
                }
                return outmessage.ToString();
            }

    // sha-1加密

       public static string hex_sha1(string Source_String)
            {
                byte[] StrRes = Encoding.Default.GetBytes(Source_String);
                HashAlgorithm iSHA = new SHA1CryptoServiceProvider();
                StrRes = iSHA.ComputeHash(StrRes);
                StringBuilder EnText = new StringBuilder();
                foreach (byte iByte in StrRes)
                {
                    EnText.AppendFormat("{0:x2}", iByte);
                }
                return EnText.ToString();
            }


    提示下,我这个登录用的是v1.3.17版本的,最新的新浪微博登录的是v1.4.2版本的,密码采用的是RSA加密,目前还没研究。

    微博很火啊,开发了一个微博爬虫应用

    有的人 会说 新浪微博 不是API吗,为什么还要取单独开发爬虫系统呢

    如果你用过新浪微博API,你就知道,有着诸多限制,功能少,信息少,信息不全,调用次数限制,重新授权等等 一系列的问题,最主要是返回的信息量少喝调用次数限制,

    还有针对IP的.

    我们设计这个爬虫的初衷是新浪微博的所有信息,目前是70%,为什么不是100%呢,说到底 还是资源问题了.

    新浪微博号称有3亿多人,实际上我们发现存在的加上新注册的大概在2亿左右,其他的都是僵尸用户。

    这些后续 再说吧。

    这个系统最重要的第一步就是模拟登录了,如果登录都不行,后续的都是扯淡.

    这个模拟登录早在2011年3月份就搞定了,到现在,登录也改过好几次,主要新浪那边有变动.

    新浪模拟登录不算很复杂,最麻烦的就是验证码了.

    要搞清楚这个登录,必须有些工具 httpfox,httpwatch,Fidder等web抓包工具中的一个。

    我这里用的是httpFox,获取浏览器

    weibo.com打开后,你需要找到对你登录可能产生影响的请求,上面蓝色的返回的参数都是我们需要的,貌似 现在我以前又有点不一样了,

    sinaSSOController.preloginCallBack({"retcode":0,"servertime":1346291808,"pcid":"ec06b269ce680ef43ce669d56f9abbfd9d43","nonce":"28FKAG","pubkey":"EB2A38568661887FA180BDDB5CABD5F21C7BFD59C090CB2D245A87AC253062882729293E5506350508E7F9AA3BB77F4333231490F915F6D63C55FE2F08A49B353F444AD3993CACC02DB784ABBB8E42A9B1BBFFFB38BE18D78E87A0E41B9B8F73A928EE0CCEE1F6739884B9777E4FE9E88A1BBE495927AC4A799B3181D6442443","rsakv":"1330428213"})

    servertime nonce 都是登录时候需要提交的,以及密码加密,pubkey 是RSAJS 加密的公共密钥 pcid rsakv post时候需要带上去

    这些返回值你都需要保存下来。

    现在开始登录

    分析提交的参数:

    entry=weibo&gateway=1&from=&savestate=7&useticket=1&vsnf=1&ssosimplelogin=1&su=dGVzdCU0MHNpbmEuY29t&service=miniblog&servertime=1346292130&nonce=28FKAG&pwencode=rsa2&rsakv=1330428213&sp=29f86ffc66bbd9ed7d750777a918fdf776211ef8ce4c3d4266111df5e3ad3cd06e2c11c9811a945d245b19eaf51174e70c798735ba5c96bb97220531c4131a6dc5f7207abeb2072401901e3259912b8e2cda3b6e540049b232d72d0693d7bb8db4d8e5d03f2f2b16c0bf11e3c0137150c80d355197b84da510d8c4ca117bbc58&encoding=UTF-8&prelt=264&url=http%3A%2F%2Fweibo.com%2Fajaxlogin.php%3Fframelogin%3D1%26callback%3Dparent.sinaSSOController.feedBackUrlCallBack&returntype=META

    固定的我就不说了,

    su账号base64加密 应改都会把

    sp是密码的加密是下面这个方法,至于说 怎么知道这些加密的,其实也不是很复杂,你需要把这个页面的JS 下载下来单独分析,看哪个地方是最终post数据的,再逆向找加密的地方就知道了 SHAEncrypt 就是sha加密了

    [csharp] view plaincopy
     
    1. protected static string SinaSHA(string pwd, string servertime, string nonce)  
    2.       {  
    3.           StringBuilder sbl = new StringBuilder();  
    4.   
    5.           string tmppwd = SHAEncrypt(SHAEncrypt(pwd));  
    6.   
    7.           sbl.Append(tmppwd);  
    8.           sbl.Append(servertime);  
    9.           sbl.Append(nonce);  
    10.   
    11.           return SHAEncrypt(sbl.ToString());  
    12.       }  


     

    servertime,nonce,rsakv,pdid(主要是在需要验证码的时候获取)获取过的

    参数都解决了,再看返回值


      <html>
      <head>
      <title>ÐÂÀËͨÐÐÖ¤</title>
      <meta http-equiv="refresh" content="0; url=&#39;http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.sinaSSOController.feedBackUrlCallBack&retcode=101&reason=%B5%C7%C2%BC%C3%FB%BB%F2%C3%DC%C2%EB%B4%ED%CE%F3&#39;"/>
      <meta http-equiv="Content-Type" content="text/html; charset=GBK" />
      </head>
      <body bgcolor="#ffffff" text="#000000" link="#0000cc" vlink="#551a8b" alink="#ff0000">
      <script type="text/javascript" language="javascript">
      location.replace("http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.sinaSSOController.feedBackUrlCallBack&retcode=101&reason=%B5%C7%C2%BC%C3%FB%BB%F2%C3%DC%C2%EB%B4%ED%CE%F3");
      </script>
      </body>
      </html>

    只有当retcode=0的时候 才是登录成功,其他的都是登录失败,

    101密码错误

    5 也是密码错误

    4057 你的账号异常了,需要人工认证下,

    4049,2070 是需要验证码哦。

    这里是登录失败了。如果是登录成功

    <html>
    <head>
    <title>Sina Member</title>
    <meta http-equiv="Content-Type" content="text/html; charset=GBK" />

    <script charset="utf-8" src="http://i.sso.sina.com.cn/js/ssologin.js"></script>
    </head>
    <body>
    Signing in ...
    <script>
    try{sinaSSOController.setCrossDomainUrlList({"retcode":0,"arrURL":["http://kandian.com/logon/do_crossdomain.php?action=login&savestate=1346897732","http://login.t.cn/sinaurl/sso.json?action=login&uid=你账号的UID"]});}catch(e){}try{sinaSSOController.crossDomainAction('login',function(){location.replace('http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.sinaSSOController.feedBackUrlCallBack&ssosavestate=1346897732&ticket=ST-MTk3NDEyNjk1NQ==-1346292932-xd-B6F5BF7A5E4438EA368D6116E6FD1622&retcode=0');});}catch(e){}
    </script>
    </body>
    </html>

    这个retcode=0的就是登录成功了.

    接下来 就需要提取这里面的3个URL了,分别请求一遍就OK了

    值得注意的是,这一些列都要用同一个CookieContainer

    到此,登录就成功了,接下来看需要验证码的.

    当你的IP,或者账号 对新浪来说有怀疑的时候,主要是访问次数过多的问题的,或者你账号异常的情况,需要你输入验证码

    找了半天,账号都忘记了,一时找不到 登录需要验证码的账号

    如果是需要验证码:

    post时候加个参数就可以了

    door=验证码

    当然你请求验证码的时候需要pcid就是上面的那个,同时需要同一个cooki了,

    至于验证码怎么解决,我在验证码识别中有记录.

    这样登录就都搞定了。

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  • 原文地址:https://www.cnblogs.com/zcm123/p/3343910.html
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