Mcrypt 扩展的 Codeigniter 临时解决方案

Question

我的项目有一个大问题。我将项目开发成 PYROCMS，PYROCMS 开发成 Codeigniter。但 PYROCMS 需要“Mcrypt 扩展程序”。

我有服务器的 ssh 详细信息，但我无权在服务器中安装任何东西。

我需要“Mcrypt extension”的解决方案，如何在不安装或从任何地方下载的情况下工作，并在可能的情况下将其上传到项目根目录？

我需要一个像 this 这样的解决方案，可以在 laravel 中使用这个打包到工作的项目而无需安装 Mcrypt 扩展，请提供类似 PYROCMS 的任何解决方案。

今天是项目的最后一天，无论发生什么我都需要上传，否则我会失去这个项目和我的工作。请帮忙。

谢谢

Answer 1

1. 转到系统/库/Encrypt.php
2. 在构造函数中，注释在页面上回显错误的行

preview code context here..

Answer 2

您可以使用自己的库覆盖默认库。你可以试试下面的代码：

P.S.：我没有测试过这段代码:)

创建一个文件：

/codeigniter/application/libraries/MY_Encrypt.php

并有以下代码开始：

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Encrypt extends CI_Encrypt {

    public function __construct()
    {
        //parent::__construct();
    }

    /*
    Create your custom encryption and decryption logic by
    overriding function
    */

}

参考： https://ellislab.com/codeigniter/user-guide/general/creating_libraries.html

Answer 3

这是个技巧，但在 Pyrocms 上效果很好

基本上是 pyrocms，在下面的模块中默认使用加密库

akshay@db-3325:/var/www/html/pyrocms/system/cms$ grep -R encrypt . | awk '!/_lang|config/'
./libraries/MY_Encrypt.php:     return call_user_func_array(array($this->instance, "encrypt"), func_get_args());
./libraries/Streams/drivers/Streams_cp.php:         // As an added measure of obsurity, we are going to encrypt the
./libraries/Streams/drivers/Streams_cp.php:         $CI->load->library('encrypt');
./libraries/Streams/drivers/Streams_cp.php:         $CI->template->append_metadata('<script type="text/javascript" language="javascript">var stream_id='.$stream->id.'; var stream_offset='.$offset.'; var streams_module="'.$CI->encrypt->encode($CI->module_details['slug']).'";
./modules/comments/libraries/Comments.php:      return ci()->encrypt->encode(serialize(array(
./modules/comments/controllers/comments.php:        $entry = unserialize($this->encrypt->decode($this->input->post('entry')));
./modules/files/libraries/Files.php:                // if we want to replace a file, the file name should already be encrypted, the option was true then
./modules/streams_core/field_types/encrypt/field.encrypt.php:class Field_encrypt
./modules/streams_core/field_types/encrypt/field.encrypt.php:   public $field_type_slug         = 'encrypt';
./modules/streams_core/field_types/encrypt/field.encrypt.php:       $this->CI->load->library('encrypt');
./modules/streams_core/field_types/encrypt/field.encrypt.php:       return $this->CI->encrypt->encode($input);
./modules/streams_core/field_types/encrypt/field.encrypt.php:       $this->CI->load->library('encrypt');
./modules/streams_core/field_types/encrypt/field.encrypt.php:       $out = $this->CI->encrypt->decode($input);
./modules/streams_core/field_types/encrypt/field.encrypt.php:       $this->CI->load->library('encrypt');
./modules/streams_core/field_types/encrypt/field.encrypt.php:       $options['value'] = ($_POST) ? $params['value'] : $this->CI->encrypt->decode($params['value']);
./modules/streams_core/controllers/ajax.php:        $this->load->library('encrypt');
./modules/streams_core/controllers/ajax.php:        $module = $this->encrypt->decode($module);

您的解决方案很少

1. 将encryption 库与openssl 一起使用，而不是encrypt 库（使用mcrypt 扩展名），在这些模块中替换它。

2. 或下载https://raw.githubusercontent.com/bcit-ci/CodeIgniter/develop/system/libraries/Encryption.php 并放入system/codeigniter/libraries 并使用以下代码在system/cms/libraries 中创建MY_Encrypt.php，它会覆盖原始CI_Encrypt 库，用于encode 和decode 我们只是调用@ 987654333@ 和 decrypt 的新加密类。

.

akshay@db-3325:/var/www/html/pyrocms/system/cms/libraries$ cat MY_Encrypt.php 
<?php
defined('BASEPATH') OR exit('No direct script access allowed');

require_once BASEPATH.'libraries/Encryption.php';

class MY_Encrypt extends CI_Encrypt {
    protected $instance;
    public function __construct(){
        $this->instance = new CI_Encryption();  
    }
    public function encode($data, $params = NULL){
        return call_user_func_array(array($this->instance, "encrypt"), func_get_args());
    }
    public function decode($data,  $params = NULL){
        return call_user_func_array(array($this->instance, "decrypt"), func_get_args());
    }
}

3.或者您创建自己的函数并在之前加载

.

akshay@db-3325:/var/www/html/pyrocms$ pwd
/var/www/html/pyrocms

# from index.php

require_once FCPATH.'compatibility.php';
require_once BASEPATH.'core/CodeIgniter'.EXT;
/* End of file index.php */

如下所示

<?php
/*  File : compatibility.php
    Example : If PHP Greater than 7, then lets create these function as it depreceated 
    http://php.net/manual/en/migration71.deprecated.php
*/
if(version_compare(PHP_VERSION,7,">"))
{
    function mcrypt_encrypt(){

    }
    function mcrypt_decrypt(){

    }

    function mcrypt_encode(){

    }
    function mcrypt_decode(){

    }

    // Do something with these constants

    //MCRYPT_MODE_ECB
    //MCRYPT_MODE_CBC
    //MCRYPT_RAND
    //MCRYPT_RIJNDAEL_256

    function mcrypt_get_iv_size(){

    }
    function mcrypt_create_iv(){

    }


}

Answer 4

打开，system/libraries/Encrpyte.php

转到第 47 行并更改它

        $this->_mcrypt_exists =  TRUE;

转到第 290 行添加符号@

        $init_size = @mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());

转到第 299 行并添加符号 @

        return rtrim(@mcrypt_decrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), "\0");

Answer 5

查看此文件以获取帮助我已从此处获取所有代码... encrypt.php 我用这个解决了这个问题。在 CI->system->libraries->encrypt.php 文件中 代替

if (($this->_mcrypt_exists = function_exists('mcrypt_encrypt')) === FALSE)
{
    show_error('The Encrypt library requires the Mcrypt extension.');
}

我检查了 mcrypt_encrypt 函数。

$this->_mcrypt_exists = ( ! function_exists('mcrypt_encrypt')) ? FALSE : TRUE;

并基于如下所示的编码函数中使用的函数，如下所示

function encode($string, $key = '')
{
    $key = $this->get_key($key);
    if ($this->_mcrypt_exists === TRUE)
    {
        $enc = $this->mcrypt_encode($string, $key);
    }
    else
    {
        $enc = $this->_xor_encode($string, $key);
    }
    return base64_encode($enc);
} 

这里是_xor_encode函数

function _xor_encode($string, $key)
{
    $rand = '';
    while (strlen($rand) < 32)
    {
        $rand .= mt_rand(0, mt_getrandmax());
    }
    $rand = $this->hash($rand);
    $enc = '';
    for ($i = 0; $i < strlen($string); $i++)
    {
        $enc .= substr($rand, ($i % strlen($rand)), 1).(substr($rand, ($i % strlen($rand)), 1) ^ substr($string, $i, 1));
    }
    return $this->_xor_merge($enc, $key);
}

和_xor_merge函数

function _xor_merge($string, $key)
{
    $hash = $this->hash($key);
    $str = '';
    for ($i = 0; $i < strlen($string); $i++)
    {
        $str .= substr($string, $i, 1) ^ substr($hash, ($i % strlen($hash)), 1);
    }
    return $str;
}