C# 登录QQ网站并获取QQ相关信息

新线书屋 2013-11-14

展开全文

本文以登录http://id.qq.com为例，获取用户等级、Q龄等相关信息。
本文界面使用WPF制作
技术涵盖：C#、wpf、HttpWebRequest、HttpWebResponse
（.net framework 4.5，当然你也可以使用4.0。不知道为什么使用3.5无法得到正确的结果，代码一模一样，还望高人指点！）

1、获取独立登录框地址

1）首先用谷歌浏览器打开http://id.qq.com，并用开发人员工具（快捷键：ctrl+shift+i）查看登陆框地址

2）Open link in new tab

到这里我们已经得到独立登陆框的地址了，方便调试和拦截请求。

成果

登录框地址：

http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&hide_title_bar=1&begin_time=1347444392246

&css=http%3A%2F%2Fimgcache.qq.com%2Fptcss%2Fr1%2Fjt%2F1006102%2Fpt_login.css

&f_url=loginerroralert&no_verifyimg=1&qlogin_jumpname=jump&hide_close_icon=1&s_url=http://id.qq.com/index.html

URL中有很多控制样式的参数，可简化为如下地址：

http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&s_url=http://id.qq.com/index.html

2、获取登录时请求的地址

通过浏览器的开发人员工具或其他HTTP拦截工具获得登录时请求的地址。

1）打开上一步得到的登录地址，并开启浏览器的开发人员工具，用以拦截请求。

2）随便输入一个号码、密码、验证码后点击登录，得到如下结果：

我们可以看到一共发送了3个请求：

请求名称	返回值	请求地址	描述
check	不通过： ptui_checkVC('1', 'a89853e618880c1b93041bda88f5fb673c8eb5555a8850fd', '\x00\x00\x00\x00\x01\x53\x15\x8e'); 通过： ptui_checkVC('0','!5A3', '\x00\x00\x00\x00\x05\xef\x0f\xba');	http://check.ptlogin2.qq.com/check? uin=22222222&appid=1006102&r=0.10299430438317358	当输入QQ号码后文本框失去焦点时发送该请求，用于检查此次登录是否需要验证码。
getimage	验证码图片	http://captcha.qq.com/getimage?aid=1006102&r=0.06791123608127236&uin=22222222	如果上一步的check方法不通过则会自动发送这个请求获取验证码。
login	ptuiCB('3','0','','0', '您输入的账号或密码不正确，请重新输入。', '22222222');	http://ptlogin2.qq.com/login?u=22222222&p=712F9A90BABE147B7A3A4427DF48698C&verifycode=gqfj& aid=1006102&u1=http%3A%2F%2Fid.qq.com%2Findex.html& h=1&ptredirect=1&ptlang=2052&from_ui=1&dumy=& fp=loginerroralert&action=8-29-82478035&mibao_css=&t=1&g=1	点击登录按钮时发送该请求进行登录操作。

值得一提的是，通过调试发现点击登录后密码在客户端是通过加密后再传输的（加密方法位于comm.js，有兴趣的可以在JS中查看如下方法）。

[javascript] view plain copy

var M = C.p.value;
var I = hexchar2bin(md5(M));
var H = md5(I + pt.uin);
var G = md5(H + C.verifycode.value.toUpperCase());

加密方法翻译为C#后如下：

[csharp] view plain copy

public class PasswordHelper
{
/// <summary>
/// 根据QQ号码和验证码加密密码
/// </summary>
/// <param name="qqNum">QQ号码</param>
/// <param name="password">QQ密码</param>
/// <param name="verifycode">验证码</param>
/// <returns>密码密文</returns>
public static string GetPassword(string qqNum, string password, string verifycode)
{
//uin为QQ号码转换为16位的16进制
int qq;
int.TryParse(qqNum, out qq);
qqNum = qq.ToString("x");
qqNum = qqNum.PadLeft(16, '0');
String P = hexchar2bin(md5(password));
String U = md5(P + hexchar2bin(qqNum)).ToUpper();
String V = md5(U + verifycode.ToUpper()).ToUpper();
return V;
}
public static string md5(string input)
{
byte[] buffer = MD5.Create().ComputeHash(Encoding.GetEncoding("ISO-8859-1").GetBytes(input));
return binl2hex(buffer);
}
public static string binl2hex(byte[] buffer)
{
StringBuilder builder = new StringBuilder();
for (int i = 0; i < buffer.Length; i++)
{
builder.Append(buffer[i].ToString("x2"));
}
return builder.ToString();
}
public static string hexchar2bin(string passWord)
{
StringBuilder builder = new StringBuilder();
for (int i = 0; i < passWord.Length; i = i + 2)
{
builder.Append(Convert.ToChar(Convert.ToInt32(passWord.Substring(i, 2), 16)));
}
return builder.ToString();
}

3、使用WPF构建登录框

直接用设计器拖一个登录界面出来，并模仿登录操作，使用HttpHelper发送上面的请求。

我所使用的HttpHelper如下，很简单，大家可以自行扩展：

[csharp] view plain copy

public class HttpHelper
{
private static string contentType = "application/x-www-form-urlencoded";
private static string accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-silverlight-2-b1, */*";
private static string userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; Zune 4.7; BOIE9;ZHCN)";
public static string referer = "http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&s_url=http://id.qq.com/index.html";
/// <summary>
/// 获取字符流
/// </summary>
/// <param name="url"></param>
/// <param name="cookieContainer"></param>
/// <returns></returns>
public static Stream GetStream(string url, CookieContainer cookieContainer)
{
HttpWebRequest httpWebRequest = null;
HttpWebResponse httpWebResponse = null;
try
{
httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
httpWebRequest.CookieContainer = cookieContainer;
httpWebRequest.ContentType = contentType;
httpWebRequest.Referer = referer;
httpWebRequest.Accept = accept;
httpWebRequest.UserAgent = userAgent;
httpWebRequest.Method = "GET";
httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;
httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
Stream responseStream = httpWebResponse.GetResponseStream();
return responseStream;
}
catch (Exception)
{
return null;
}
}
/// <summary>
/// 获取HTML
/// </summary>
/// <param name="url"></param>
/// <param name="cookieContainer"></param>
/// <returns></returns>
public static string GetHtml(string url, CookieContainer cookieContainer)
{
HttpWebRequest httpWebRequest = null;
HttpWebResponse httpWebResponse = null;
try
{
httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
httpWebRequest.CookieContainer = cookieContainer;
httpWebRequest.ContentType = contentType;
httpWebRequest.Referer = referer;
httpWebRequest.Accept = accept;
httpWebRequest.UserAgent = userAgent;
httpWebRequest.Method = "GET";
httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;
httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
Stream responseStream = httpWebResponse.GetResponseStream();
StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);
string html = streamReader.ReadToEnd();
streamReader.Close();
responseStream.Close();
httpWebRequest.Abort();
httpWebResponse.Close();
return html;
}
catch (Exception)
{
return string.Empty;
}
}
}