363 lines
9.5 KiB
PHP
363 lines
9.5 KiB
PHP
<?php
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/**
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* dmarc-srg - A php parser, viewer and summary report generator for incoming DMARC reports.
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* Copyright (C) 2020 Aleksey Andreev (liuch)
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*
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* Available at:
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* https://github.com/liuch/dmarc-srg
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* =========================
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*
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* This file contains the Core class
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*
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* @category API
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* @package DmarcSrg
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* @author Aleksey Andreev (liuch)
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* @license https://www.gnu.org/licenses/gpl-3.0.html GNU/GPLv3
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*/
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namespace Liuch\DmarcSrg;
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use Liuch\DmarcSrg\Exception\SoftException;
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use Liuch\DmarcSrg\Exception\LogicException;
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/**
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* It's class for accessing to most methods for working with http, json data,
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* the user session, getting instances of some classes
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*/
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class Core
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{
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public const APP_VERSION = '1.7';
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private const SESSION_NAME = 'session';
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private const HTML_FILE_NAME = 'index.html';
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private $modules = [];
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private static $instance = null;
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/**
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* The constructor
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*
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* @param array $params Array with modules to be bind to
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*/
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public function __construct($params)
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{
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foreach ([ 'admin', 'auth', 'config', 'database', 'ehandler', 'status' ] as $key) {
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if (isset($params[$key])) {
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$this->modules[$key] = $params[$key];
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}
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}
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self::$instance = $this;
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}
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/**
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* Returns the method of the current http request.
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*
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* @return string http method
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*/
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public static function method(): string
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{
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return $_SERVER['REQUEST_METHOD'];
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}
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/**
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* Returns array of request headers in lowercase mode.
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*
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* @return array
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*/
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public static function getHeaders(): array
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{
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return array_change_key_case(getallheaders(), CASE_LOWER);
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}
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/**
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* Sets or gets the current user's id
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*
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* In case $id is null, the method returns the current user's id.
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* In case $id is integer value, the method sets this value as the current user's id.
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* It returns false if there is an error.
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*
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* @param int|void $id User id to set it.
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*
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* @return int|bool User id or false in case of error.
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*/
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public function userId($id = null)
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{
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$start_f = false;
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if ((self::cookie(self::SESSION_NAME) !== '' || $id !== null) && session_status() !== PHP_SESSION_ACTIVE) {
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$start_f = true;
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self::sessionStart();
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}
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$res = null;
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if (gettype($id) === 'integer') {
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$_SESSION['user_id'] = $id;
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}
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$res = isset($_SESSION['user_id']) ? intval($_SESSION['user_id']) : false;
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if ($start_f) {
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session_write_close();
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}
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return $res;
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}
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/**
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* Deletes the session of the current user and the corresponding cookie.
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*
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* @return void
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*/
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public function destroySession(): void
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{
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if (self::cookie(self::SESSION_NAME)) {
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if (session_status() !== PHP_SESSION_ACTIVE) {
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self::sessionStart();
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}
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$_SESSION = [];
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if (ini_get('session.use_cookies')) {
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$scp = session_get_cookie_params();
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$cep = [
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'expires' => time() - 42000,
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'path' => $scp['path'],
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'domain' => $scp['domain'],
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'secure' => $scp['secure'],
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'httponly' => $scp['httponly'],
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'samesite' => $scp['samesite']
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];
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setcookie(self::SESSION_NAME, '', $cep);
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session_write_close();
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}
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}
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}
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/**
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* Returns true if the http request asks for json data.
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*
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* @return bool
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*/
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public static function isJson(): bool
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{
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$headers = self::getHeaders();
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return (isset($headers['accept']) && $headers['accept'] === 'application/json');
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}
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/**
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* Sends the html file to the client.
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*
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* @return void
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*/
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public static function sendHtml(): void
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{
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if (file_exists(Core::HTML_FILE_NAME)) {
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readfile(Core::HTML_FILE_NAME);
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}
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}
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/**
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* Sends data from an array as json string to the client.
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*
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* @param array $data - Data to send.
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*
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* @return void
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*/
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public static function sendJson(array $data): void
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{
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$res_str = json_encode($data);
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if ($res_str === false) {
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$res_str = '[]';
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}
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header('content-type: application/json; charset=UTF-8');
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echo $res_str;
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}
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/**
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* Sends a Bad Request response to the client.
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*
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* @return void
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*/
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public static function sendBad(): void
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{
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http_response_code(400);
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echo 'Bad request';
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}
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/**
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* Retrieves json data from the request and return it as an array.
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*
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* Returns an array with data or null if there is an error.
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*
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* @return array|null Data from the request
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*/
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public static function getJsonData()
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{
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$res = null;
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$headers = self::getHeaders();
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if (isset($headers['content-type']) && $headers['content-type'] === 'application/json') {
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$str = file_get_contents('php://input');
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if ($str) {
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$res = json_decode($str, true);
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}
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}
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return $res;
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}
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/**
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* Returns an instance of the class Auth.
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*
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* @return Auth
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*/
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public function auth()
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{
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return $this->getModule('auth', true);
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}
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/**
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* Returns an instance of the class Status.
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*
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* @return Status instance of Status
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*/
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public function status()
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{
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return $this->getModule('status', true);
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}
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/**
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* Returns an instance of the class Admin.
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*
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* @return Admin instance of Admin
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*/
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public function admin()
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{
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return $this->getModule('admin', true);
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}
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/**
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* Returns an instance of the class Database.
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*
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* @return DatabaseController
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*/
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public function database()
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{
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return $this->getModule('database', true);
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}
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/**
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* Returns an instance of the class ErrorHandler
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*
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* @return ErrorHandler
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*/
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public function errorHandler()
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{
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return $this->getModule('ehandler', true);
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}
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/**
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* Returns the current logger.
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* Just a proxy method to return the logger from ErrorHandler
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*
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* @return LoggerInterface
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*/
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public function logger()
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{
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return $this->errorHandler()->logger();
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}
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/**
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* Returns instance of the object
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*
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* @return self
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*/
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public static function instance()
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{
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return self::$instance;
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}
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/**
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* Returns the config value by its name
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*
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* @param string $name Config item name. Hierarchy supported via '/'
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* @param mixed $default Value to be returned if the required config item is missing or null
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*
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* @return mixed
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*/
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public function config(string $name, $default = null)
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{
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return $this->getModule('config', false)->get($name, $default);
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}
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/**
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* Gets or sets a cookie with the specified name.
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*
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* @param string $name the cookie name to get or to set
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* @param string|null $value
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* @param array|null $params
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*
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* @return string|boolean The cookie value or false if there is an error
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*/
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private static function cookie($name, $value = null, $params = null)
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{
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if (!$value) {
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return isset($_COOKIE[$name]) ? $_COOKIE[$name] : '';
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}
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if (setcookie($name, $value, $params)) {
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return $value;
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}
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return false;
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}
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/**
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* Starts the user session
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*
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* @return void
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*/
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private static function sessionStart(): void
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{
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if (!session_start(
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[
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'name' => self::SESSION_NAME,
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'cookie_path' => dirname($_SERVER['REQUEST_URI']),
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'cookie_httponly' => true,
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'cookie_samesite' => 'Strict'
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]
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)
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) {
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throw new SoftException('Failed to start a user session');
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}
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}
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/**
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* Returns a module instance by its name. Lazy initialization is used.
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*
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* @param string $name Module name
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* @param bool $core Whether to pass $this to the constructor
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*
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* @return object
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*/
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private function getModule(string $name, bool $core)
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{
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$module = $this->modules[$name] ?? null;
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switch (gettype($module)) {
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case 'array':
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if ($core) {
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$module = new $module[0]($this, ...($module[1] ?? []));
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} else {
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$module = new $module[0](...($module[1] ?? []));
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}
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$this->modules[$name] = $module;
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break;
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case 'NULL':
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throw new LogicException('Attempt to initiate an unloaded module ' . $name);
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}
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return $module;
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}
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}
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