267 lines
8.4 KiB
PHP
267 lines
8.4 KiB
PHP
<?php
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$db_file = dirname(__FILE__)."/db_file.sqlite";
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abstract class RegisterState
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{
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// Sending an E-Mail failed in the first attempt. Will retry later
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const PendingEmailSend = 0;
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// User got a mail. We wait for it to verfiy
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const PendingEmailVerify = 1;
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// Sending a message to the register room failed on first attempt
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const PendingAdminSend = 5;
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// No admin has verified the registration yet
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const PendingAdminVerify = 6;
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// Registration failed on first attempt. Will retry
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const PendingRegistration = 7;
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// in this case we have to reset the password of the user (or should we store it for this case?)
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const PendingSendRegistrationMail = 8;
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// State to allow persisting in the database although an admin declined it.
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// Will be removed regularly
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const RegistrationAccepted = 7;
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const RegistrationDeclined = 13;
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// User got successfully registered. Will be cleaned up later
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const AllDone = 100;
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}
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class mxDatabase
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{
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private $db = NULL;
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/**
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* Creates mxDatabase object
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* @param db_file path to the sqlite file where the credentials should be stored
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*/
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function __construct($db_file) {
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// create database file when not existent yet
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if (!file_exists($db_file)) {
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$this->db = new PDO('sqlite:' . $db_file);
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$this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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$this->db->exec("CREATE TABLE registrations(
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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state INT DEFAULT 0,
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first_name TEXT,
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last_name TEXT,
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username TEXT,
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note TEXT,
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email TEXT,
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verify_token TEXT,
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admin_token TEXT,
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request_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP)");
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$this->db->exec("CREATE TABLE logins (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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active INT DEFAULT 1,
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firstname TEXT,
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lastname TEXT,
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localpart TEXT,
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password_hash TEXT,
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email TEXT,
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create_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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last_modified TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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)");
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}
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else {
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// establish connection
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$this->db = new PDO('sqlite:' . $db_file);
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$this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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}
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// set writeable when not set already
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if (!is_writable($db_file)) {
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chmod($db_file, 0777);
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}
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}
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/**
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* WARNING: This allows accessing the database directly.
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* This was only be added for convenience. You are advised to not use this function extensively
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*
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* @param sql String wich will be passed directly to the database
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* @return Response of PDO::query()
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*/
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function query($sql) {
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return $this->db->query($sql);
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}
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function setRegistrationStateVerify($state, $token) {
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$sql = "UPDATE registrations SET state = " . $state
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. ' WHERE verify_token = "' . $token . '";';
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return $this->db->exec($sql);
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}
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function setRegistrationStateById($state, $id) {
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$sql = "UPDATE registrations SET state = " . $state
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. ' WHERE id = "' . $id . '";';
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return $this->db->exec($sql);
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}
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function setRegistrationStateAdmin($state, $token) {
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$sql = "UPDATE registrations SET state = " . $state
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. ' WHERE admin_token = "' . $token . '";';
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return $this->db->exec($sql);
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}
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function setRegistrationState($state, $token) {
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$sql = "UPDATE registrations SET state = " . $state
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. " WHERE verify_token = \"" . $token . '" OR admin_token = "' . $token . '";';
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return $this->db->exec($sql);
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}
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function userPendingRegistrations($username) {
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$sql = "SELECT COUNT(*) FROM registrations WHERE username = '" . $username . "' AND NOT state = "
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. RegisterState::RegistrationDeclined . " LIMIT 1;";
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$res = $this->db->query($sql);
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if ($res->fetchColumn() > 0) {
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return true;
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}
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return false;
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}
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function userRegistered($username) {
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$sql = "SELECT COUNT(*) FROM logins WHERE localpart = '" . $username . "' LIMIT 1;";
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$res = $this->db->query($sql);
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if ($res->fetchColumn() > 0) {
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return true;
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}
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return false;
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}
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/**
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* Adds user to the database. Next steps should be sending a verify-mail to the user
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* @param first_name First name of the user
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* @param last_name Sirname of the user
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* @param username the future localpart of that user
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* @param note Note the user typed in to give a hint
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* @param email E-Mail-Adress which will be stored into the database.
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* This will be send to the server on first login
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*
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* @return ["verify_token"]
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*/
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function addRegistration($first_name, $last_name, $username, $note, $email) {
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if ($this->userPendingRegistrations($username)) {
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require_once "language.php";
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throw new Exception($language["USERNAME_PENDING_REGISTRATION"]);
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}
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if ($this->userRegistered($username)) {
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require_once "language.php";
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throw new Exception($language["USERNAME_REGISTERED"]);
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}
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$verify_token = bin2hex(random_bytes(16));
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$admin_token = bin2hex(random_bytes(16));
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$this->db->exec('INSERT INTO registrations
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(first_name, last_name, username, note, email, verify_token, admin_token)
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VALUES ("' . $first_name.'","' . $last_name . '","' . $username . '","' . $note . '","'
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. $email.'","' .$verify_token.'","' .$admin_token.'")');
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return [
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"verify_token"=> $verify_token,
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];
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}
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/**
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* Gets the user for the verify_admin page.
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*
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* @return ArrayOfUser|NULL Array with "first_name, last_name, username, note and email"
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* as members
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*/
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function getUserForApproval($admin_token) {
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$sql = "SELECT COUNT(*) FROM registrations WHERE admin_token = '" . $admin_token . "'"
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. " AND state = " . RegisterState::PendingAdminVerify . " LIMIT 1;";
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$res = $this->db->query($sql);
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$first_name = NULL; $last_name = NULL; $username = NULL; $note = NULL; $email = NULL;
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if ($res->fetchColumn() > 0) {
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$sql = "SELECT first_name, last_name, username, note, email FROM registrations"
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. " WHERE admin_token = '" . $admin_token . "'"
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. " AND state = " . RegisterState::PendingAdminVerify
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. " LIMIT 1;";
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foreach ($this->db->query($sql) as $row) {
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// will only be executed once
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return $row;
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}
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}
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return NULL;
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}
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/**
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* Gets the user when it opens the page to verify its mail
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*
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* @return ArrayOfUser|NULL Array with "first_name, last_name, note, email and admin_token"
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* as members
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*/
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function getUserForVerify($verify_token) {
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$sql = "SELECT COUNT(*) FROM registrations WHERE verify_token = '" . $verify_token . "'"
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. " AND state = " . RegisterState::PendingEmailVerify . " LIMIT 1;";
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$res = $this->db->query($sql);
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$first_name = NULL; $last_name = NULL; $username = NULL; $note = NULL; $email = NULL;
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if ($res->fetchColumn() > 0) {
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$sql = "SELECT first_name, last_name, note, email, admin_token FROM registrations "
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. " WHERE verify_token = '" . $verify_token . "'"
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. " AND state = " . RegisterState::PendingEmailVerify . " LIMIT 1;";
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foreach ($this->db->query($sql) as $row) {
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// will only be executed once
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return $row;
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}
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}
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return NULL;
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}
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function getUserForLogin($localpart, $password) {
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$sql = "SELECT COUNT(*) FROM logins WHERE localpart = '" . $localpart
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. "' AND active = 1 LIMIT 1;";
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$res = $this->db->query($sql);
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$first_name = NULL; $last_name = NULL; $username = NULL; $note = NULL; $email = NULL;
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if ($res->fetchColumn() > 0) {
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$sql = "SELECT first_name, last_name, email, password_hash FROM logins "
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. " WHERE verify_token = '" . $token . "' LIMIT 1;";
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foreach ($this->db->query($sql) as $row) {
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// will only be executed once
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if (password_verify($password, $row["password_hash"])) {
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return $row;
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}
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}
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}
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return NULL;
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}
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/**
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* adds User to be able to login afterwards.
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* @param first_name First name of the user
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* @param last_name Sirname of the user
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* @param username the future localpart of that user
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* @param email E-Mail-Adress which will be stored into the database.
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* This will be send to the server on first login
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*
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* @return password|NULL with member password as this method generates a
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* password and saves that into the database
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* NULL when failed
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*
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*/
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function addUser($first_name, $last_name, $username, $email) {
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// generate a password with 10 characters
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$password = bin2hex(openssl_random_pseudo_bytes(5));
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$password_hash = password_hash($password, PASSWORD_BCRYPT, ["cost"=>12]);
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$sql = "INSERT INTO logins (firstname, lastname, localpart, password_hash, email) VALUES "
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. '("' . $first_name.'","' . $last_name . '","' . $username . '","'
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. $password_hash . '","' . $email . '")';
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if ($this->db->exec($sql)) {
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return $password;
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}
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return NULL;
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}
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}
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$mx_db = new mxDatabase($db_file);
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?>
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