python 模拟登陆百度的简单示例

使用python模拟登陆百度

# @param 使用python模拟登陆百度
# @author 编程之家 52php.cn|www.52php.cn 

#!/usr/bin/python
# -*- coding: utf-8 -*-
  
import re;
import cookielib;
import urllib;
import urllib2;
import optparse;
  
#------------------------------------------------------------------------------
# check all cookies in cookiesDict is exist in cookieJar or not
def checkAllCookiesExist(cookieNameList,cookieJar) :
    cookiesDict = {};
    for eachCookieName in cookieNameList :
        cookiesDict[eachCookieName] = False;
  
    allCookieFound = True;
    for cookie in cookieJar :
        if(cookie.name in cookiesDict) :
            cookiesDict[cookie.name] = True;
  
    for eachCookie in cookiesDict.keys() :
        if(not cookiesDict[eachCookie]) :
            allCookieFound = False;
            break;
  
    return allCookieFound;
  
#------------------------------------------------------------------------------
# just for print delimiter
def printDelimiter():
    print '-'*80;
  
#------------------------------------------------------------------------------
# main function to emulate login baidu
def emulateLoginBaidu():
    print "Function: Used to demostrate how to use Python code to emulate login baidu main page: http://www.baidu.com/";
    print "Usage: emulate_login_baidu_python.py -u yourBaiduUsername -p yourBaiduPassword";
    printDelimiter();
  
    # parse input parameters
    parser = optparse.OptionParser();
    parser.add_option("-u","--username",action="store",type="string",default='',dest="username",help="Your Baidu Username");
    parser.add_option("-p","--password",dest="password",help="Your Baidu password");
    (options,args) = parser.parse_args();
    # export all options variables,then later variables can be used
    for i in dir(options):
        exec(i + " = options." + i);
  
    printDelimiter();
    print "[preparation] using cookieJar & HTTPCookieProcessor to automatically handle cookies";
    cj = cookielib.CookieJar();
    opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj));
    urllib2.install_opener(opener);
  
    printDelimiter();
    print "[step1] to get cookie BAIDUID";
    baiduMainUrl = "http://www.baidu.com/";
    resp = urllib2.urlopen(baiduMainUrl);
    #respInfo = resp.info();
    #print "respInfo=",respInfo;
    for index,cookie in enumerate(cj):
        print '[',index,']',cookie;
  
    printDelimiter();
    print "[step2] to get token value";
    getapiUrl = "https://passport.baidu.com/v2/api/?getapi&class=login&tpl=mn&tangram=true";
    getapiResp = urllib2.urlopen(getapiUrl);
    #print "getapiResp=",getapiResp;
    getapiRespHtml = getapiResp.read();
    #print "getapiRespHtml=",getapiRespHtml;
    #bdPass.api.params.login_token='5ab690978812b0e7fbbe1bfc267b90b3';
    foundTokenVal = re.search("bdPass.api.params.login_token='(?P<tokenVal>w+)';",getapiRespHtml);
    if(foundTokenVal):
        tokenVal = foundTokenVal.group("tokenVal");
        print "tokenVal=",tokenVal;
  
        printDelimiter();
        print "[step3] emulate login baidu";
        staticpage = "http://www.baidu.com/cache/user/html/jump.html";
        baiduMainLoginUrl = "https://passport.baidu.com/v2/api/?login";
        postDict = {
            #'ppui_logintime': "",'charset'       : "utf-8",#'codestring'    : "",'token'         : tokenVal,#de3dbf1e8596642fa2ddf2921cd6257f
            'isPhone'       : "false",'index'         : "0",#'u'             : "",#'safeflg'       : "0",'staticpage'    : staticpage,#http%3A%2F%2Fwww.baidu.com%2Fcache%2Fuser%2Fhtml%2Fjump.html
            'loginType'     : "1",'tpl'           : "mn",'callback'      : "parent.bdPass.api.login._postCallback",'username'      : username,'password'      : password,#'verifycode'    : "",'mem_pass'      : "on",};
        postData = urllib.urlencode(postDict);
        # here will automatically encode values of parameters
        # such as:
        # encode http://www.baidu.com/cache/user/html/jump.html into http%3A%2F%2Fwww.baidu.com%2Fcache%2Fuser%2Fhtml%2Fjump.html
        #print "postData=",postData;
        req = urllib2.Request(baiduMainLoginUrl,postData);
        # in most case,for do POST request,the content-type,is application/x-www-form-urlencoded
        req.add_header('Content-Type',"application/x-www-form-urlencoded");
        resp = urllib2.urlopen(req);
        #for index,cookie in enumerate(cj):
        #    print '[',cookie;
        cookiesToCheck = ['BDUSS','PTOKEN','STOKEN','SAVEUSERID'];
        loginBaiduOK = checkAllCookiesExist(cookiesToCheck,cj);
        if(loginBaiduOK):
            print "+++ Emulate login baidu is OK,^_^";
        else:
            print "--- Failed to emulate login baidu !"
    else:
        print "Fail to extract token value from html=",getapiRespHtml;
  
if __name__=="__main__":
    emulateLoginBaidu();

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（编辑：李大同）

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