.net实现扫描二维码登录webqq群抓取qq群信息

一.流程

1. //获得二维码的qrsig，cookie标志

2. //登录二维码获得二维码的状态,及最新的url

3. //登录此网址，获得cookies

4.//cookies，筛选出skey信息，获得post的参数

5. 提交post

二. 代码

/// <summary>
/// 获得qq群返回的信息
/// </summary>
/// <returns></returns>
public string getqqgroupmessage()
{
try
{
random random = new random();
var da = random.nextdouble();
string qrcodeurl = @"https://ssl.ptlogin2.qq.com/ptqrshow?appid=715030901&e=2&l=m&s=3&d=72&v=4&t=" + da.tostring() + @"&daid=73&pt_3rd_aid=0";
string qqgroupcheckurl = null;
string qqgroupnumberurl = @"http://qun.qq.com/cgi-bin/qun_mgr/search_group_members";
string qrsig = null;
string setcookies = null;
string postdata = null;
string responsemessage = null;
httpclient httpclient = new httpclient();

qrsig = httpclient.getqrcode(qrcodeurl); //获得二维码的qrsig，cookie标志

qqgroupcheckurl = login_qrstatu(httpclient, qrsig); //登录二维码获得二维码的状态,及最新的url

httpclient.get(out setcookies, qqgroupcheckurl); //登录此网址，获得cookies

postdata = getpostdata(setcookies); //cookies，筛选出skey信息，获得post的参数

responsemessage = httpclient.post(qqgroupnumberurl, postdata);
loghelp.logdebug("get qq group message success!");
return responsemessage;
}
catch (exception ex)
{
loghelp.logdebug("get qq group message failed!" + ex);
return null;
}
}

/// <summary>
/// 扫描二维码，并获得最新的url
/// </summary>
/// <param name="httpclient">
/// httpclient
/// </param>
/// <param name="qrsig">
/// qrsig
/// </param>
/// <returns></returns>
private string login_qrstatu(httpclient httpclient,string qrsig)
{
int ptqrtoken = httpclient.hashconvert(qrsig);
string url = @"https://ssl.ptlogin2.qq.com/ptqrlogin?u1=https%3a%2f%2fqun.qq.com%2f&ptqrtoken=" +
ptqrtoken.tostring() +
@"&ptredirect=1&h=1&t=1&g=1&from_ui=1&ptlang=2052&action=0-1-1520572499521&js_ver=10233&js_type=1&login_sig=v-enlbkgzcaodxlgch2k8di6krubbwgwzfpao*kfmwvybewgcqluqvlj4yaneo61&pt_uistyle=40&aid=715030901&daid=73&";
string referer = @"https://xui.ptlogin2.qq.com/cgi-bin/xlogin?appid=715030901&daid=73&pt_no_auth=1&s_url=https%3a%2f%2fqun.qq.com%2f";
string strlogionurl = null;
string setcookies = null;
int timecount = 0;
while (strlogionurl == null)
{
timecount++;
thread.sleep(1000);
string dat = httpclient.get(out setcookies, url, referer);
string[] temp = dat.split('\'');
switch (temp[1])
{

case ("65"):
loghelp.logdebug("当前登录状态：二维码失效，请稍后");
break;
case ("66"):
loghelp.logdebug("当前登录状态：二维码有效，请扫描");
break;
case ("67"):
loghelp.logdebug("当前登录状态：二维码已扫描，请确认");
break;
case ("0"):
loghelp.logdebug("当前登录状态：确认成功，请稍候");
strlogionurl = temp[5];
break;
default:
loghelp.logdebug("登录信息有误，重新扫描！");
break;
}
if(timecount>300) //5min内有效
{
break;
}
}
return strlogionurl;
}

/// <summary>
/// post方法的参数
/// </summary>
/// <param name="setcookie">setcookies</param>
/// <returns></returns>
private string getpostdata(string setcookie)
{
try
{
string skey = httpclient.getskey(setcookie);
//string postdata = "gc=621859311&st=0&end=800&sort=0&bkn=" + httpclient.getbkn(skey).tostring();
string postdata = keywordslibconfigmanager.keywordslibconfig.postdata + httpclient.getbkn(skey).tostring();
return postdata;
}
catch (exception ex)
{
loghelp.logerror("get postdata error!" + ex);
return null;
}
}

三. html解析，post和get方法

namespace test.htmlparse
{
/// <summary>
/// //网络通信相关
/// </summary>
public class httpclient
{

public static cookiecontainer cookies = new cookiecontainer();
static cookiecollection cookiecollection = new cookiecollection();
static cookiecontainer cookiecontainer = new cookiecontainer();

/// <summary>
/// 获得response内容
/// </summary>
/// <param name="setcookies">out cookie内容</param>
/// <param name="referer"></param>
/// <param name="timeout"></param>
/// <param name="encode"></param>
/// <param name="noproxy"></param>
/// <returns></returns>
public string get(out string setcookies,
string url,
string referer = "https://xui.ptlogin2.qq.com/cgi-bin/xlogin?appid=715030901&daid=73&pt_no_auth=1&s_url=https%3a%2f%2fqun.qq.com%2f",
int timeout = 100000,
encoding encode = null,
bool noproxy = false)
{
if (url == null)
{
setcookies = null;
return null;
}

string dat;
httpwebresponse res = null;
httpwebrequest req;
try
{
req = (httpwebrequest)webrequest.create(url);
req.cookiecontainer = cookies;
req.allowautoredirect = false;
req.timeout = timeout;
req.referer = referer;
if (noproxy)
req.proxy = null;
req.useragent = "mozilla/5.0 (windows nt 6.1; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/65.0.3325.146 safari/537.36";
res = (httpwebresponse)req.getresponse();
setcookies = res.headers.get("set-cookie");
cookies.add(res.cookies);
}
catch (exception ex)
{
loghelp.logerror(string.format("get {0} response error! ex:{1}", url, ex));
setcookies = null;
return null;
}
streamreader reader;
reader = new streamreader(res.getresponsestream(), encode == null ? encoding.utf8 : encode);
dat = reader.readtoend();
res.close();
req.abort();
loghelp.logdebug(string.format("get method request succeed! - setcookies={0},url ={1}", setcookies, url));
return dat;
}

/// <summary>
/// qr二维码，返回qrsig值
/// </summary>
/// <param name="url"></param>
/// <param name="referer"></param>
/// <param name="timeout"></param>
/// <param name="encode"></param>
/// <param name="noproxy"></param>
public string getqrcode(
string url,
string referer = "https://xui.ptlogin2.qq.com/cgi-bin/xlogin?appid=715030901&daid=73&pt_no_auth=1&s_url=https%3a%2f%2fqun.qq.com%2f",
int timeout = 100000,
encoding encode = null,
bool noproxy = false)
{
if (url == null)
return null;

string qrsigcookie = null;
httpwebresponse res = null;
httpwebrequest req;
try
{
req = (httpwebrequest)webrequest.create(url);
req.cookiecontainer = cookies;
req.allowautoredirect = false;
req.timeout = timeout;
req.referer = referer;
if (noproxy)
req.proxy = null;
req.useragent = "mozilla/5.0 (windows nt 6.1; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/65.0.3325.146 safari/537.36";
res = (httpwebresponse)req.getresponse();
cookies.add(res.cookies);
}
catch (exception ex)
{
loghelp.logerror(string.format("getqr {0} response error! ex:{1} ", url, ex));
throw ex;
}
try
{
streamreader reader;
reader = new streamreader(res.getresponsestream(), encode == null ? encoding.utf8 : encode);
bitmap bmap = new bitmap(res.getresponsestream());
bmap.save(@"d:\qrcode.jpg");
//发送邮件
string title = "qq群登录二维码";
string content = "请在五分钟内扫描登录二维码,过期失效！";
string[] receiveaddrs = keywordslibconfigmanager.keywordslibconfig.emailaddrs.receiveaddr.toarray();
string[] attachaddrs = keywordslibconfigmanager.keywordslibconfig.emailaddrs.attachuri.toarray();
emailpack pack = new emailpack(title, content, receiveaddrs, null, attachaddrs);
loghelp.loginfo(this, "收到邮件发送请求title:" + title + ",receiveaddrs:" + string.join(",", receiveaddrs));
pack.send();

qrsigcookie = res.headers.get("set-cookie");
if (qrsigcookie == null)
{
return null;
}
var index1 = qrsigcookie.indexof("=");
var index2 = qrsigcookie.indexof(";");
qrsigcookie = qrsigcookie.substring(index1 + 1, 64);
res.close();
req.abort();
loghelp.loginfo(string.format("getqrcode method request succeed! - qrsigcookie={0},url ={1}", qrsigcookie, url));
return qrsigcookie;
}
catch (exception ex)
{
loghelp.logerror("qrsigcookie error or reader wrong! ex:" + ex);
throw ex;
}
}

/// <summary>
/// post方法
/// </summary>
/// <param name="url">url</param>
/// <param name="postdata">post-data </param>
/// <param name="referer"></param>
/// <param name="timeout"></param>
/// <param name="encode"></param>
/// <returns> reponse content </returns>
internal string post(
string url,
string postdata,
string referer = "//qun.qq.com/member.html#gid=621859311",
int timeout = 100000,
encoding encode = null)
{
if (url == null)
return null;
string dat = "";
httpwebrequest req;
try
{
req = webrequest.create(url) as httpwebrequest;
req.cookiecontainer = cookies;
req.contenttype = "application/x-www-form-urlencoded";
req.method = "post";
req.proxy = null;
req.timeout = timeout;
req.useragent = "mozilla/5.0 (windows nt 6.1; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/65.0.3325.146 safari/537.36";
req.protocolversion = httpversion.version10;
req.referer = referer;

byte[] mybyte = encoding.default.getbytes(postdata);
req.contentlength = mybyte.length;
stream stream = req.getrequeststream();
stream.write(mybyte, 0, mybyte.length);
httpwebresponse res = req.getresponse() as httpwebresponse;
cookies.add(res.cookies);
stream.close();
streamreader sr = new streamreader(res.getresponsestream(), encode == null ? encoding.utf8 : encode);
dat = sr.readtoend();
res.close();
req.abort();
loghelp.logdebug(string.format("post method request succeed! - postdata={0},url ={1}", postdata, url));
}
catch (exception ex)
{
loghelp.logerror(string.format("post method error! ex:{0}", ex));
return null;
}
return dat;
}

/// <summary>
/// bkn 解密方法
/// </summary>
/// <param name="skey"></param>
/// <returns></returns>
public static long getbkn(string skey)
{
var hash = 5381;
for (int i = 0, len = skey.length; i < len; ++i)
{
hash += (hash << 5) + (int)skey[i];
}
return hash & 2147483647;
}

/// <summary>
/// get skey string
/// </summary>
/// <param name="setcookie"></param>
/// <returns></returns>
public static string getskey(string setcookie)
{
if (setcookie == null)
return null;
string cookietemp = regex.replace(setcookie, @"p_skey", "");
string[] cookies = cookietemp.split(';');
string skey = null;
foreach (var c in cookies)
{
if (c.contains("skey"))
{
int index = c.indexof("=");
skey = c.substring(index + 1);
break;
}
}
return skey;
}

/// <summary>
/// 哈希转换, for qrtoken
/// </summary>
/// <param name="cookie"></param>
/// <returns></returns>
public static int hashconvert(string cookie)
{
int e = 0;
for (int j = 0, k = cookie.length; k > j; j++)
{
char temp = cookie.elementat(j);
e += (e << 5) + convert.tobyte(temp);
}
return 2147483647 & e;
}

}
}