<?php
/**
* Simple install script to set-up the MySQL database and database user for CChat.
* Edit the constants in the configuration section below, then load this file via a web server
* or execute on the command-line: php install.php
*
* @author Martin Latter
* @copyright 29/06/2014
* @version 0.10
* @license GNU GPL version 3.0 (GPL v3); http://www.gnu.org/licenses/gpl.html
* @link https://github.com/Tinram/CChat.git
*/
/* CONFIGURATION */
define('SUPER_USER', 'root');
define('SUPER_USER_PASSWORD', '**root_password**');
define('APP_USERNAME', 'messenger');
define('APP_PASSWORD', 'P@55w0rd');
define('APP_NAME', 'CChat');
define('HOST', 'localhost');
define('DATABASE', 'cchat');
define('TABLE', 'chatbox');
define('CHARSET', 'latin1');
define('COLLATION', 'latin1_general_ci');
/* END CONFIGURATION */
# command-line or server line break output
define('LINE_BREAK', (PHP_SAPI !== 'cli') ? '<br>' : "\n");
$oConnection = new mysqli(HOST, SUPER_USER, SUPER_USER_PASSWORD);
if ($oConnection->connect_errno > 0)
{
die('Database connection failed: (' . $oConnection->connect_errno . ') ' . $oConnection->connect_error . LINE_BREAK);
}
else
{
$sTitle = APP_NAME . ' Database Setup';
if (PHP_SAPI !== 'cli')
{
echo '<h2>' . $sTitle . '</h2>';
}
else
{
echo $sTitle . LINE_BREAK . LINE_BREAK;
}
# create database
$sQuery = 'CREATE DATABASE IF NOT EXISTS ' . DATABASE . ' CHARACTER SET ' . CHARSET . ' COLLATE ' . COLLATION;
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Created database ' . DATABASE . '.' . LINE_BREAK;
}
else
{
die('ERROR: could not create the ' . DATABASE . ' database.' . LINE_BREAK);
}
# select database
$sQuery = 'USE ' . DATABASE;
$rResults = $oConnection->query($sQuery);
# create table
$sQuery = '
CREATE TABLE IF NOT EXISTS `' . TABLE . '`
(
`id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
`name` CHAR(16) NOT NULL,
`message` VARCHAR(384) NOT NULL,
`date` INT UNSIGNED NOT NULL,
KEY `idx_date` (`date`),
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=' . CHARSET;
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Created table ' . TABLE . '.' . LINE_BREAK;
}
else
{
die('ERROR: could not create the ' . TABLE . ' table.' . LINE_BREAK);
}
# create first (unencrypted) test message
$sQuery = 'INSERT INTO ' . DATABASE . '.' . TABLE . ' (name, message, date) VALUES("init", "test", UNIX_TIMESTAMP())';
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Created first ' . APP_NAME . ' message.' . LINE_BREAK;
}
else
{
die('ERROR: could not create the first message.' . LINE_BREAK);
}
# create CChat user, avoiding errors if user was previously created
$sQuery = 'CREATE USER IF NOT EXISTS "' . APP_USERNAME . '"@"' . HOST . '"';
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
# MySQL 8 / user already exists on 5.x
echo 'Created ' . APP_NAME . ' database user (' . APP_USERNAME . ').' . LINE_BREAK;
# create CChat user password
$sQuery = 'SET PASSWORD FOR "' . APP_USERNAME . '"@"' . HOST . '" = ' . '"' . APP_PASSWORD . '"';
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Created ' . APP_NAME . ' database user password.' . LINE_BREAK;
}
else
{
die('ERROR: could not create database user password (check password complexity requirements).' . LINE_BREAK);
}
# create CChat user permissions
$sQuery = 'GRANT SELECT, INSERT ON ' . DATABASE . '.* TO "' . APP_USERNAME . '"@"' . HOST . '"';
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Created database user permissions.' . LINE_BREAK;
}
else
{
die('ERROR: could not create ' . APP_NAME . ' database user (' . APP_USERNAME . ') permissions.' . LINE_BREAK);
}
}
else
{
# MySQL 5.x
echo 'Could not create ' . APP_NAME . ' database user (' . APP_USERNAME . ') with method 1' . LINE_BREAK;
echo 'trying method 2 ...' . LINE_BREAK;
# for password requirements blocking
$sQuery = 'GRANT SELECT, INSERT ON ' . DATABASE . '.* TO "' . APP_USERNAME . '"@"' . HOST . '" IDENTIFIED BY "' . APP_PASSWORD . '"';
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Created ' . APP_NAME . ' database user (' . APP_USERNAME . ') and permissions.' . LINE_BREAK;
}
else
{
die('ERROR: could not create the ' . APP_NAME . ' database user.' . LINE_BREAK);
}
}
# Circumvent MySQL 8's sha256_password default authentication.
# This is just to get CChat operational on MySQL 8 with PHP < 7.4, and is best replaced with caching_sha2_password authentication ASAP.
$sQuery = 'SELECT VERSION()';
$rResults = $oConnection->query($sQuery);
$aVersion = $rResults->fetch_row()[0];
if (substr($aVersion, 0, 1) === '8')
{
$sQuery = 'ALTER USER "' . APP_USERNAME . '"@"' . HOST . '" IDENTIFIED WITH mysql_native_password BY "' . APP_PASSWORD . '"';
$rResults = $oConnection->query($sQuery);
if ($rResults)
{
echo 'Bypassed MySQL 8 sha256_password authentication.' . LINE_BREAK;
}
else
{
die('ERROR: could not bypass MySQL 8 sha256_password authentication.' . LINE_BREAK);
}
}
# flush
$sQuery = 'FLUSH PRIVILEGES';
$rResults = $oConnection->query($sQuery);
# if run in browser, display link to CChat
if (PHP_SAPI !== 'cli')
{
echo LINE_BREAK . '<a href="./index.php">' . APP_NAME . '</a>';
}
# close connection
$oConnection->close();
}
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