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scores.php
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scores.php
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<?php
if ( !isset( $_GET['action'] ) )
output_and_die( 'Command not exist' );
if ( !class_exists('SQLite3') ) {
output_and_die( 'SQLite3 extention not installed' );
}
if (file_exists('./scores.db')) {
$db = new SQLite3 ('scores.db');
} else {
$SQL = <<<SQL
CREATE TABLE `scores` (
`id` CHAR(6) NOT NULL,
`md5` CHAR(32) NOT NULL,
`game` CHAR(16) NOT NULL,
`data` CHAR(32),
`created` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`id`)
);
SQL;
$db = new SQLite3 ('scores.db');
@$result = $db->query( $SQL );
if (!$result)
output_and_die( $db->lastErrorMsg() );
output_and_die('Database created', 'OK');
}
switch ( $_GET['action'] ) {
case 'get':
get();
break;
case 'put':
put();
break;
case 'content':
content();
break;
default:
output_and_die( 'Command not recognized' );
break;
}
function get() {
global $db;
if ( !isset($_GET['data']) )
$_GET['data'] = '';
switch ($_GET['data']) {
case 'id':
clear_old_records();
$body = array(
'id' => generate_id(),
'token' => md5 ( uniqid() )
);
output_and_die('Id generated', 'OK', $body);
break;
case '':
show_lastest_record();
break;
default:
$id = substr($_GET['data'], 0, 32);
$stmt = $db->prepare('SELECT * FROM `scores` WHERE id = ?;');
$stmt->bindValue(1, $id, SQLITE3_TEXT);
$result = $stmt->execute();
if (false == $result)
output_and_die( $db->lastErrorMsg() );
$result = $result->fetchArray(SQLITE3_ASSOC);
if (false == $result)
output_and_die( 'The requested data not found' );
output_and_die( 'Scores extracted', 'OK', array('id'=>$id, 'game'=>$result['game'], 'content' => $result['data'] ) );
break;
}
}
function output($msg, $status ='ERROR', $body = false) {
echo json_encode(array(
'status' => $status,
'msg' => $msg,
'body' => $body,
));
}
function output_and_die($msg, $status='ERROR', $body = false) {
output($msg, $status, $body);
die();
}
function generate_id($length = 6) {
global $db;
$chars = 'abcdefgjijklmnopqrstuvwxyz123456789';
$stmt = $db->prepare('SELECT count(`id`) as count FROM `scores` WHERE id = ?;');
$id = '';
while ( '' == $id ) {
for ($i = 0; $i < $length; $i++) {
$pos = rand(0, strlen($chars) - 1);
$id .= $chars[ $pos ];
}
$stmt->bindValue(1, $id, SQLITE3_TEXT);
$result = $stmt->execute();
if (false == $result)
output_and_die( $db->lastErrorMsg() );
$result = $result->fetchArray(SQLITE3_ASSOC);
if ( $result['count'] > 0 )
$id = '';
$stmt->clear();
}
return $id;
}
function put() {
//Prepare data
global $db;
$_POST['id'] = (isset($_POST['id'])) ? substr($_POST['id'], 0, 32) : '';
$_POST['token'] = (isset($_POST['token'])) ? substr($_POST['token'], 0, 32) : '';
$_POST['game'] = (isset($_POST['game'])) ? substr($_POST['game'], 0, 16) : '';
$_POST['data'] = (isset($_POST['data'])) ? $_POST['data'] : '';
//$_POST['data'] = $_POST['data'] );
//Get data for this id
$stmt = $db->prepare('SELECT * FROM `scores` WHERE id = ?;');
$stmt->bindValue(1, $_POST['id'], SQLITE3_TEXT);
$result = @$stmt->execute();
if (false == $result)
output_and_die( $db->lastErrorMsg() );
$result = $result->fetchArray(SQLITE3_ASSOC);
//Check if we are allowed to write data
if ( !empty($result['id']) && ( $_POST['token'] != $result['md5'] ) )
output_and_die( 'Security token do not match' );
//Write data
$stmt = $db->prepare('INSERT OR REPLACE INTO `scores` (id, md5, data, game) VALUES (?, ?, ?, ?)');
$stmt->bindValue(1, $_POST['id'], SQLITE3_TEXT);
$stmt->bindValue(2, $_POST['token'], SQLITE3_TEXT);
$stmt->bindValue(3, $_POST['data'], SQLITE3_TEXT);
$stmt->bindValue(4, $_POST['game'], SQLITE3_TEXT);
$result = @$stmt->execute();
if (false == $result)
output_and_die( $db->lastErrorMsg() );
//$result = $result->fetchArray();
output_and_die( 'Scores updated', 'OK');
}
function content() {
global $db;
$stmt = $db->prepare('SELECT * FROM `scores`;');
$result = @$stmt->execute();
echo "-------------------------\r\n";
while ( $row = $result->fetchArray( SQLITE3_ASSOC ) ) {
var_dump($row);
}
echo "-------------------------\r\n";
clear_old_records();
}
function show_lastest_record() {
global $db;
$id = (isset($_GET['data'])) ? substr($_GET['data'], 0, 32):'';
$game = (isset($_GET['game'])) ? substr($_GET['game'], 0, 16):'';
if ($game) {
$stmt = $db->prepare('SELECT * FROM `scores` WHERE `game` = ? ORDER BY `CREATED` DESC LIMIT 1;');
$stmt->bindValue(1, $_GET['game'], SQLITE3_TEXT);
} else {
$stmt = $db->prepare('SELECT * FROM `scores` ORDER BY `CREATED` DESC LIMIT 1;');
}
$result = @$stmt->execute();
if (false == $result)
output_and_die( $db->lastErrorMsg() );
$result = $result->fetchArray( SQLITE3_ASSOC );
if (!$result['id'])
output_and_die( 'No score records in database found' );
output_and_die( 'Latest scores extracted', 'OK', array('id' => $result['id'], 'game' => $result['game'], 'content' => $result['data'] ) );
};
function clear_old_records($age = '1 week') {
global $db;
$interval = DateInterval::createFromDateString($age);
$deadline = new DateTime();
$deadline->sub($interval);
$stmt = $db->prepare('DELETE FROM `scores` WHERE `created` < ?;');
$stmt->bindValue(1, $deadline->format('Y-m-d H:i:s'), SQLITE3_TEXT);
$result = @$stmt->execute();
if (false == $result)
output_and_die( $db->lastErrorMsg() );
}