一、构思

  • 从Firefox浏览器拷贝cURL命令（初始页、提交、提交后）
  • 自动分析curl形成模拟登录代码
  • 默认参数：ssl/302/gzip

二、实现

接口

（一）根据curl信息执行并解析结果 public function execCurl($curlContent, $callbackBefore = false, $callbackAfter = false)

（二）解析curl信息 protected function _parseCurl($curlContent)

（三）执行curl请求 protected function _execCurl

（四）获取上一次存储cookie的文件 public function getLastCookieFile()

（五）设置上一次存储cookie的文件 protected function setLastCookieFile($cookieFile)

（六）登录成功后，锁定上一次存储cookie的文件，避免覆盖 public function lockLastCookieFile()

（七）解锁上一次存储cookie的文件 public function unlockLastCookieFile()

（八）登录成功， get 方式获取url信息 public function getUrl($url, $header = false)

（九）登录成功， post 方式获取url信息 public function postUrl($url, $postData = false, $header = false)

（十）记录日志 protected function _log($msg)

<?php

namespace PhpUtility;

/**

 * class CurlAutoLogin

 * @author Zjmainstay

 * @website http://www.zjmainstay.cn

 *

 * 利用curl信息自动解析实现模拟登录

 */

class CurlAutoLogin {

    //最后一次cookie存储文件

    protected $lastCookieFile = '';

    //登录成功后，锁定cookie的更新

    protected $lockedLastCookieFile = false;

    /**

     * 根据curl信息执行并解析结果

     * @param  string  $curlContent    利用Firefox浏览器复制cURL命令

     * @param  boolean $callbackBefore 对curl结果前置处理，如更换用户名、密码等

     * @param  boolean $callbackAfter  对采集结果后置处理，如解析结果的csrf token等

     * @return mixed

     */

    public function execCurl($curlContent, $callbackBefore = false, $callbackAfter = false) {

        $parseCurlResult = $this->_parseCurl($curlContent);

        if(!empty($callbackBefore)) {

            $parseCurlResult = $callbackBefore($parseCurlResult);

        }

        $execCurlResult  = $this->_execCurl($parseCurlResult);

        if(!empty($callbackAfter)) {

            $execCurlResult = $callbackAfter($parseCurlResult, $execCurlResult);

        }

        return $execCurlResult;

    }

    /**

     * 解析curl信息

     * @param  string $curlContent 利用Firefox浏览器复制cURL命令

     * @return bool|array

     */

    protected function _parseCurl($curlContent) {

        if(!preg_match("#curl '([^']*?)'#is", $curlContent, $matchUrl)) {

            return false;

        }

        //remove cookie data in header

        $curlContent = preg_replace("#-H 'Cookie:[^']*'#is", '', $curlContent);

        if(!preg_match_all("#-H '([^']*?)'#is", $curlContent, $headerMatches)) {

            $httpHeader = [];

        } else {

            $httpHeader = $headerMatches[1];

        }

        if(!preg_match("#--data '([^']*?)'#is", $curlContent, $postDataMatch)) {

            $postData = '';

        } else {

            $postData = $postDataMatch[1];

        }

        return [

            'url'       => $matchUrl[1],

            'header'    => $httpHeader,

            'post'      => $postData,

        ];

    }

    /**

     * 执行curl请求

     * @param  array $parseCurlResult curl信息的解析结果，包含 url/header/post 三个键值参数

     * @return string

     */

    protected function _execCurl($parseCurlResult) {

        if(empty($parseCurlResult['url'])) {

            return '';

        }

        $ch = curl_init($parseCurlResult['url']);

        curl_setopt($ch,CURLOPT_HEADER,0);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //返回数据不直接输出

        curl_setopt($ch, CURLOPT_ENCODING, "gzip"); //指定gzip压缩

        //add header

        if(!empty($parseCurlResult['header'])) {

            $this->curl->opt[CURLOPT_HTTPHEADER] = $parseCurlResult['header'];

        }

        //add ssl support

        if(substr($parseCurlResult['url'], 0, 5) == 'https') {

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    //SSL 报错时使用

            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);    //SSL 报错时使用

        }

        //add 302 support

        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

        //add cookie support

        //设置一个不存在的目录以在系统临时目录随机生成一个缓存文件，避免多进程cookie覆盖

        $cookieFile = tempnam('/not_exist_dir/', 'autologin');

        curl_setopt($ch,CURLOPT_COOKIEJAR,$cookieFile); //存储提交后得到的cookie数据

        //add previous curl cookie

        if(!empty($this->lastCookieFile)) {

            curl_setopt($ch,CURLOPT_COOKIEFILE, $this->lastCookieFile); //使用提交后得到的cookie数据

        }

        //add post data support

        if(!empty($parseCurlResult['post'])) {

            curl_setopt($ch,CURLOPT_POST, 1);

            curl_setopt($ch,CURLOPT_POSTFIELDS, $parseCurlResult['post']);

        }

        try {

            $content = curl_exec($ch); //执行并存储结果

        } catch (\Exception $e) {

            $this->_log($e->getMessage());

        }

        $curlError = curl_error($ch);

        if(!empty($curlError)) {

            $this->_log($curlError);

        }

        curl_close($ch);

        //update last cookie file

        $this->setLastCookieFile($cookieFile);

        return $content;

    }

    /**

     * 记录日志

     * @param  [type] $msg [description]

     * @return [type]      [description]

     */

    protected function _log($msg) {

        file_put_contents(__DIR__ . '/run.log', $msg . "\n", 8);

    }

    /**

     * 获取上一次存储cookie的文件

     * @return [type] [description]

     */

    public function getLastCookieFile() {

        return $this->lastCookieFile;

    }

    /**

     * 设置上一次存储cookie的文件

     * @param [type] $cookieFile [description]

     */

    protected function setLastCookieFile($cookieFile) {

        if(!$this->lockedLastCookieFile) {

            $this->lastCookieFile = $cookieFile;

        }

    }

    /**

     * 登录成功后，锁定上一次存储cookie的文件，避免覆盖

     * @return [type] [description]

     */

    public function lockLastCookieFile() {

        $this->lockedLastCookieFile = true;

    }

    /**

     * 解锁上一次存储cookie的文件

     * @return [type] [description]

     */

    public function unlockLastCookieFile() {

        $this->lockedLastCookieFile = false;

    }

    /**

     * 登录成功， get 方式获取url信息

     * @param  [type]  $url    [description]

     * @param  boolean $header [description]

     * @return [type]          [description]

     */

    public function getUrl($url, $header = false) {

        $ch = curl_init($url);

        curl_setopt($ch,CURLOPT_HEADER,0);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //返回数据不直接输出

        curl_setopt($ch, CURLOPT_ENCODING, "gzip"); //指定gzip压缩

        //add header

        if(!empty($header)) {

            $this->curl->opt[CURLOPT_HTTPHEADER] = $header;

        }

        //add ssl support

        if(substr($url, 0, 5) == 'https') {

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    //SSL 报错时使用

            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);    //SSL 报错时使用

        }

        //add 302 support

        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

        curl_setopt($ch,CURLOPT_COOKIEFILE, $this->lastCookieFile); //使用提交后得到的cookie数据

        try {

            $content = curl_exec($ch); //执行并存储结果

        } catch (\Exception $e) {

            $this->_log($e->getMessage());

        }

        $curlError = curl_error($ch);

        if(!empty($curlError)) {

            $this->_log($curlError);

        }

        curl_close($ch);

        return $content;

    }

    /**

     * 登录成功， post 方式获取url信息

     * @param  [type]  $url      [description]

     * @param  boolean $postData [description]

     * @param  boolean $header   [description]

     * @return [type]            [description]

     */

    public function postUrl($url, $postData = false, $header = false) {

        $ch = curl_init($url);

        curl_setopt($ch,CURLOPT_HEADER,0);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //返回数据不直接输出

        curl_setopt($ch, CURLOPT_ENCODING, "gzip"); //指定gzip压缩

        //add header

        if(!empty($header)) {

            $this->curl->opt[CURLOPT_HTTPHEADER] = $header;

        }

        //add ssl support

        if(substr($url, 0, 5) == 'https') {

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    //SSL 报错时使用

            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);    //SSL 报错时使用

        }

        //add 302 support

        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

        curl_setopt($ch,CURLOPT_COOKIEFILE, $this->lastCookieFile); //使用提交后得到的cookie数据

        //add post data support

        if(!empty($postData)) {

            curl_setopt($ch,CURLOPT_POST, 1);

            curl_setopt($ch,CURLOPT_POSTFIELDS, $postData);

        }

        try {

            $content = curl_exec($ch); //执行并存储结果

        } catch (\Exception $e) {

            $this->_log($e->getMessage());

        }

        $curlError = curl_error($ch);

        if(!empty($curlError)) {

            $this->_log($curlError);

        }

        curl_close($ch);

        return $content;

    }

}

三、演示

运行：PHP cURL自动模拟登录演示

<?php

require_once __DIR__.'/../vendor/autoload.php';

$autologin = new PhpUtility\CurlAutoLogin();

//0. 未登录

$getDataUrl = 'http://demo.zjmainstay.cn/js/simpleAjax/loginResult.php';

echo 'Before Login: ' . $autologin->getUrl($getDataUrl) . "\n";

//1. 初始化登录页

$firstCurl = "curl 'http://demo.zjmainstay.cn/js/simpleAjax/' -H 'Host: demo.zjmainstay.cn' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3' -H 'Accept-Encoding: gzip, deflate' -H 'Cookie: Hm_lvt_1526d5aecf5561ef9401f7c7b7842a97=1468327822,1468327904,1468341636,1468411918; Hm_lpvt_1526d5aecf5561ef9401f7c7b7842a97=1468421526' -H 'Connection: keep-alive' -H 'If-Modified-Since: Mon, 27 Oct 2014 08:31:18 GMT' -H 'If-None-Match: \"32e-453-506635ac5e180\"' -H 'Cache-Control: max-age=0'";

$autologin->execCurl($firstCurl);

//2. 提交登录表单

$secondCurl = "curl 'http://demo.zjmainstay.cn/js/simpleAjax/doPost.php' -H 'Host: demo.zjmainstay.cn' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0' -H 'Accept: application/json, text/javascript, */*; q=0.01' -H 'Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3' -H 'Accept-Encoding: gzip, deflate' -H 'Content-Type: application/x-www-form-urlencoded; charset=UTF-8' -H 'X-Requested-With: XMLHttpRequest' -H 'Referer: http://demo.zjmainstay.cn/js/simpleAjax/' -H 'Cookie: Hm_lvt_1526d5aecf5561ef9401f7c7b7842a97=1468327822,1468327904,1468341636,1468411918; Hm_lpvt_1526d5aecf5561ef9401f7c7b7842a97=1468421526' -H 'Connection: keep-alive' --data 'username=demousername'";

$realUsername = 'Zjmainstay';

//前置处理，替换错误的用户名

$autologin->execCurl($secondCurl, function($parseCurlResult) use ($realUsername) {

        $parseCurlResult['post'] = str_replace('=demousername', "={$realUsername}", $parseCurlResult['post']);

        return $parseCurlResult;

    });

//3. 登录成功，锁定cookie的更新，直接访问已登录页面内容

$autologin->lockLastCookieFile();

echo 'After Login: ' . $autologin->getUrl($getDataUrl) . "\n";

四、更多

请关注github项目 php-utility-class 上面的更新。

文章首发自Zjmainstay学习笔记《PHP基于cURL实现自动模拟登录》

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