mirror of
https://github.com/nuxsmin/sysPass.git
synced 2026-03-03 07:04:07 +01:00
403 lines
11 KiB
PHP
403 lines
11 KiB
PHP
<?php
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/**
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* sysPass
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*
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* @author nuxsmin
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* @link http://syspass.org
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* @copyright 2012-2014 Rubén Domínguez nuxsmin@syspass.org
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*
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* This file is part of sysPass.
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*
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* sysPass is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* sysPass is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with sysPass. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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defined('APP_ROOT') || die(_('No es posible acceder directamente a este archivo'));
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/**
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* Clase con utilizades para la aplicación
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*/
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class SP_Util
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{
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/**
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* @brief Comprobar si la función de números aleatorios está disponible
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* @return bool
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*/
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public static function secureRNG_available()
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{
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// Check openssl_random_pseudo_bytes
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if (function_exists('openssl_random_pseudo_bytes')) {
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openssl_random_pseudo_bytes(1, $strong);
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if ($strong == true) {
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return true;
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}
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}
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// Check /dev/urandom
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$fp = @file_get_contents('/dev/urandom', false, null, 0, 1);
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if ($fp !== false) {
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return true;
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}
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return false;
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}
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/**
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* @brief Comprobar si sysPass se ejecuta en W$indows
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* @return bool
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*/
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public static function runningOnWindows()
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{
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return (substr(PHP_OS, 0, 3) === "WIN");
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}
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/**
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* @brief Generar una cadena aleatoria usuando criptografía
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* @param int $length opcional, con la longitud de la cadena
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* @return string
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*/
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public static function generate_random_bytes($length = 30)
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{
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// Try to use openssl_random_pseudo_bytes
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if (function_exists('openssl_random_pseudo_bytes')) {
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$pseudo_byte = bin2hex(openssl_random_pseudo_bytes($length, $strong));
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if ($strong == true) {
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return substr($pseudo_byte, 0, $length); // Truncate it to match the length
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}
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}
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// Try to use /dev/urandom
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$fp = @file_get_contents('/dev/urandom', false, null, 0, $length);
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if ($fp !== false) {
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$string = substr(bin2hex($fp), 0, $length);
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return $string;
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}
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// Fallback to mt_rand()
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$characters = '0123456789';
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$characters .= 'abcdefghijklmnopqrstuvwxyz';
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$charactersLength = strlen($characters) - 1;
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$pseudo_byte = "";
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// Select some random characters
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for ($i = 0; $i < $length; $i++) {
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$pseudo_byte .= $characters[mt_rand(0, $charactersLength)];
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}
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return $pseudo_byte;
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}
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/**
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* @brief Comprobar la versión de PHP
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* @return bool
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*/
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public static function checkPhpVersion()
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{
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$error = array();
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$version = explode('.', PHP_VERSION);
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$versionId = ($version[0] * 10000 + $version[1] * 100 + $version[2]);
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if ($versionId < 50100) {
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$error[] = array('type' => 'critical',
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'description' => _('Versión de PHP requerida >= 5.1'),
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'hint' => _('Actualice la versión de PHP para que la aplicación funcione correctamente'));
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}
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return $error;
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}
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/**
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* @brief Comprobar los módulos necesarios
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* @return array con los módulos no disponibles
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*/
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public static function checkModules()
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{
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$modsAvail = get_loaded_extensions();
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$modsNeed = array("mysql", "ldap", "mcrypt", "curl", "SimpleXML");
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$modsErr = array();
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foreach ($modsNeed as $module) {
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if (!in_array($module, $modsAvail)) {
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$error = array(
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'type' => 'warning',
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'description' => _('Módulo no disponible') . " ($module)",
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'hint' => _('Sin este módulo la aplicación puede no funcionar correctamente.')
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);
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$modsErr[] = $error;
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}
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}
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return $modsErr;
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}
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/**
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* @brief Devuelve el valor de la variable enviada por un formulario
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* @param string $s con el nombre de la variable
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* @param string $d con el valor por defecto
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* @return string con el valor de la variable
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*/
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public static function init_var($s, $d = "")
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{
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$r = $d;
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if (isset($_REQUEST[$s]) && !empty($_REQUEST[$s])) {
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$r = SP_Html::sanitize($_REQUEST[$s]);
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}
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return $r;
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}
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/**
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* @brief Comprobar si el módulo de LDAP está instalado
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* @return bool
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*/
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public static function ldapIsAvailable()
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{
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return in_array("ldap", get_loaded_extensions());
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}
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/**
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* @brief Comprobar si el módulo CURL está instalado
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* @return bool
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*/
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public static function curlIsAvailable()
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{
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return (function_exists(curl_init));
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}
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/**
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* @brief Devuelve la versión de sysPass
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* @return string con la versión
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*/
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public static function getVersionString()
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{
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return '1.1b';
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}
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/**
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* @brief Comprobar si hay actualizaciones de sysPass disponibles desde internet (sourceforge.net)
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* @return array|bool
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*
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* Esta función comprueba el feed RSS de sourceforge.net y lo parsea para verificar si la aplicación está actualizada
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*/
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public static function checkUpdates()
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{
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//if ( ! self::curlIsAvailable() || ! SP_Config::getValue('checkupdates') ){
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if (!SP_Config::getValue('checkupdates')) {
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return false;
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}
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// $ch = curl_init("http://sourceforge.net/api/file/index/project-id/775555/mtime/desc/limit/1/rss");
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//
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// curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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// curl_setopt($ch, CURLOPT_HEADER, 0);
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//
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// if ( ! $data = curl_exec($ch) ) return false;
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//
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// curl_close($ch);
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$feedUrl = 'https://sourceforge.net/api/file/index/project-id/1257402/mtime/desc/limit/20/rss';
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$feed = file_get_contents($feedUrl);
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if ($feed) {
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$xmlUpd = new SimpleXMLElement($feed, LIBXML_NOCDATA);
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} else {
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return false;
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}
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if ($xmlUpd->channel->item->title) {
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$pubVer = '';
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foreach ($xmlUpd->channel->item as $item) {
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$url = (string)$item->link;
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$title = (string)$item->title;
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$description = (string)$item->description;
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if (preg_match("/.*\/sysPass_(\d)\.(\d{1,})\.(\d{1,})(\-[a-z0-9]+)?\.(tar\.gz|zip)$/", $title, $pubVer)) {
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break;
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}
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}
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if (is_array($pubVer) && SP_Init::isLoggedIn()) {
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$appVersion = implode('', self::getVersion());
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$pubVersion = $pubVer[1] . $pubVer[2] . $pubVer[3];
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if ($pubVersion > $appVersion) {
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$version = $pubVer[1] . '.' . $pubVer[2] . '.' . $pubVer[3];
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return array('version' => $version, 'url' => $url);
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} else {
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return true;
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}
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} else {
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return false;
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}
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}
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}
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/**
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* @brief Devuelve la versión de sysPass
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* @param bool $retBuild devolver el número de compilación
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* @return array con el número de versión
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*/
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public static function getVersion($retBuild = false)
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{
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$build = 8;
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$version = array(1, 1, 2);
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if ($retBuild) {
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array_push($version, $build);
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}
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return $version;
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}
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/**
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* @brief Comprobar el método utilizado para enviar un formulario
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* @param string $method con el método utilizado.
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* @return none
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*/
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public static function checkReferer($method)
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{
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if ($_SERVER['REQUEST_METHOD'] !== $method
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|| !isset($_SERVER['HTTP_REFERER'])
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|| !preg_match('#' . SP_Init::$WEBROOT . '/.*$#', $_SERVER['HTTP_REFERER'])
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) {
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SP_Init::initError(_('No es posible acceder directamente a este archivo'));
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exit();
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}
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}
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/**
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* @brief Realiza el proceso de logout
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* @return none
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*/
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public static function logout()
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{
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exit('<script>doLogout();</script>');
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}
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/**
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* @brief Obtener el tamaño máximo de subida de PHP
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* @return none
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*/
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public static function getMaxUpload()
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{
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$max_upload = (int)(ini_get('upload_max_filesize'));
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$max_post = (int)(ini_get('post_max_size'));
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$memory_limit = (int)(ini_get('memory_limit'));
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$upload_mb = min($max_upload, $max_post, $memory_limit);
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$message['action'] = __FUNCTION__;
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$message['text'][] = "Max. PHP upload: " . $upload_mb . "MB";
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SP_Log::wrLogInfo($message);
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}
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/**
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* @brief Comprobar si está en modo DEMO
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* @return bool
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*/
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public static function demoIsEnabled()
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{
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return SP_Config::getValue('demo_enabled', false);
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}
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/**
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* @brief Comprobar si está habilitada la gestión de archivos
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* @return bool
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*/
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public static function fileIsEnabled()
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{
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return SP_Config::getValue('files_enabled', false);
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}
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/**
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* @brief Comprobar si están habilitadas las notificaciones por correo
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* @return bool
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*/
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public static function mailIsEnabled()
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{
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return SP_Config::getValue('mail_enabled', false);
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}
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/**
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* @brief Comprobar si está habilitada la Wiki
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* @return bool
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*/
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public static function wikiIsEnabled()
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{
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return SP_Config::getValue('wiki_enabled', false);
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}
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/**
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* @brief Comprobar si están habilitadas las peticiones por correo
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* @return bool
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*/
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public static function mailrequestIsEnabled()
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{
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return SP_Config::getValue('mail_requestsenabled', false);
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}
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/**
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* @brief Comprobar si está habilitado LDAP
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* @return bool
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*/
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public static function ldapIsEnabled()
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{
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return SP_Config::getValue('ldap_enabled', false);
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}
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/**
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* @brief Comprobar si está habilitado el log de eventos
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* @return bool
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*/
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public static function logIsEnabled()
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{
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return SP_Config::getValue('log_enabled', false);
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}
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/**
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* @brief Comprobar si está habilitado el formato de tarjeta en los resultados
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* @return bool
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*/
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public static function resultsCardsIsEnabled()
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{
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return SP_Config::getValue('resultsascards', false);
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}
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/**
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* @brief Establecer variable de sesión para recargar la aplicación
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* @return none
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*/
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public static function reload()
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{
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if (!isset($_SESSION["reload"]) || $_SESSION["reload"] === 0) {
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$_SESSION["reload"] = 1;
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}
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}
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/**
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* @brief Comprobar si se necesita recargar la aplicación
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* @return none
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*/
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public static function checkReload()
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{
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if (isset($_SESSION["reload"]) && $_SESSION["reload"] === 1) {
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$_SESSION["reload"] = 0;
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exit("<script>window.location.href = 'index.php';</script>");
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}
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}
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} |