Current File : /var/www/pn/beta/64801_wp-content/plugins/wysija-newsletters/helpers/server.php
<?php
defined('WYSIJA') or die('Restricted access');
class WYSIJA_help_server extends WYSIJA_object {
function __construct(){
parent::__construct();
}
/**
* test if the server on which you are running wysija is unhealthy and may cause troubles
* @return mixed
*/
function unhealthy($return_result=false){
$server_missing_capabilities=array();
$missing_functions_result=$this->missing_php_functions();
// can we mkdir
if($missing_functions_result) $server_missing_capabilities['functions']=$missing_functions_result;
// can we mkdir
if(!$this->can_make_dir()) $server_missing_capabilities['mkdir']=true;
// can we unzip a file to a temp folder
if(!$this->can_unzip()) $server_missing_capabilities['unzip']=true;
// can we move files to a new folder
if(!$this->can_move()) $server_missing_capabilities['move']=true;
// can we create, alter tables to the database
if(!$this->can_sql_create_tables()) $server_missing_capabilities['sql_create']=true;
// can we create, alter tables to the database
if(!$this->can_sql_alter_tables()) $server_missing_capabilities['sql_alter']=true;
if(!empty($server_missing_capabilities)) return $server_missing_capabilities;
else return false;
}
/**
* check if the server miss some vital functions to work properly
* @return mixed
*/
function missing_php_functions(){
// can we use those functions on the server?
$functions_per_environment=array(
'required'=> array(
'functions' => array('base64_decode', 'base64_encode'),
),
'remote calls' => array(
'functions'=>array('curl_init', 'http_get', 'file_get_contents'),
),
'DKIM signature'=>array(
'functions'=>array('openssl_sign')
)
);
$missing_functions=array();
foreach($functions_per_environment as $environment => &$data){
// if the function we're testing has an alternative we try it
foreach($data['functions'] as $function_name){
if($this->is_function_available($function_name)){
$data['functions'][$function_name]=true;
}else{
$missing_functions[$environment][$function_name]=true;
}
}
}
if(!empty($missing_functions)) return $missing_functions;
return false;
}
/**
* check if a php function is usable on this host
* some hosts disable base64_encode or base64_decode for instance ...
* @param string $function_name
* @return boolean
*/
function is_function_available($function_name) {
// we just want string here
if(!is_string($function_name) || $function_name=='') return false;
// get the list of disabled function recorded in the php.ini
$disabled = explode(', ', ini_get('disable_functions'));
// does our function exists and is not in the disabled functions list of php.ini
if(function_exists($function_name) && !in_array(strtolower($function_name), $disabled)) return true;
return false;
}
/**
* check if the php user can make a dir on the server
* @return boolean
*/
function can_make_dir(){
// Test temp directory creation.
$hFile = WYSIJA::get('file','helper');
$upload_dir = wp_upload_dir();
$temp_dir = $hFile->makeDir();
if (!$temp_dir) {
$this->error(sprintf(__('The folder "%1$s" is not writable, please change the access rights to this folder so that MailPoet can setup itself properly.',WYSIJA),$upload_dir['basedir']).'<a target="_blank" href="http://codex.wordpress.org/Changing_File_Permissions">'.__('Read documentation',WYSIJA).'</a>');
return false;
} else {
// Create index.html to protect the temp directory.
$index_file = 'index.html';
fclose(fopen($temp_dir.$index_file, 'w'));
return true;
}
}
/**
* check if the server allows us to unzip files through php
* @return boolean
*/
function can_unzip(){
return true;
}
/**
* check if the server can move a directory with nested content and directories to another directory
* @return boolean
*/
function can_move(){
return true;
}
/**
* check if the SQL user is allowed to create tables onto the database
* @global type $wpdb
* @return boolean
*/
function can_sql_create_tables(){
// test that we can create tables on the mysql server
$model_user = WYSIJA::get('user','model');
$this->_create_temp_sql_table_if_not_exists();
$query="SHOW TABLES like '".$model_user->getPrefix()."user_list_temp';";
global $wpdb;
$res = $wpdb->get_var($query);
if(!$res){
$this->error(sprintf(
__('The MySQL user you have setup on your WordPress site (wp-config.php) doesn\'t have enough privileges to CREATE MySQL tables. Please change this user yourself or contact the administrator of your site in order to complete MailPoet\'s installation. mysql errors:(%1$s)',WYSIJA), $wpdb->last_error));
return false;
}
return true;
}
/**
* check if the SQL user is allowed to alter tables onto the database
* @return boolean
*/
function can_sql_alter_tables(){
// if we call that function out of the main process we make sure the table exists
$this->_create_temp_sql_table_if_not_exists();
// test that we can alter tables on the mysql server
$model_user=WYSIJA::get('user','model');
$query='ALTER TABLE `'.$model_user->getPrefix().'user_list_temp` ADD `namekey` VARCHAR( 255 ) NULL;';
global $wpdb;
$wpdb->query($query);
if(!$wpdb->result){
$error_message=__('The MySQL user you have setup on your WordPress site (wp-config.php) doesn\'t have enough privileges to CREATE MySQL tables. Please change this user yourself or contact the administrator of your site in order to complete MailPoet\'s installation. mysql errors:(%1$s)',WYSIJA);
$this->error(sprintf(str_replace('CREATE', 'ALTER', $error_message), $wpdb->last_error ));
$this->_drop_temp_sql_table();
return false;
}
$this->_drop_temp_sql_table();
return true;
}
/**
* create the temporary table we need for SQL access rights tests
* @global type $wpdb
* @return boolean
*/
function _create_temp_sql_table_if_not_exists(){
$model_user=WYSIJA::get('user','model');
$query='CREATE TABLE IF NOT EXISTS `'.$model_user->getPrefix().'user_list_temp` (
`list_id` INT unsigned NOT NULL,
`user_id` INT unsigned NOT NULL,
`sub_date` INT unsigned DEFAULT 0,
`unsub_date` INT unsigned DEFAULT 0,
PRIMARY KEY (`list_id`,`user_id`)
)';
global $wpdb;
$wpdb->query($query);
return true;
}
/**
* drop the temporary table we've created
* @return boolean
*/
function _drop_temp_sql_table(){
$model_user=WYSIJA::get('user','model');
global $wpdb;
$query='DROP TABLE `'.$model_user->getPrefix().'user_list_temp`;';
$wpdb->query($query);
if(!$wpdb->result){
return false;
}
return true;
}
}
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