captured_errors ); $version = yourls_get_database_version(); $num_errors2 = count( $ydb->captured_errors ); if( $version == NULL || ( $num_errors2 > $num_errors1 ) ) { yourls_die( yourls__( 'Incorrect DB config, or could not connect to DB' ), yourls__( 'Fatal error' ), 503 ); } return ( version_compare( '5.0', $version ) <= 0 ); } /** * Get DB version * * The regex removes everything that's not a number at the start of the string, or remove anything that's not a number and what * follows after that. * 'omgmysql-5.5-ubuntu-4.20' => '5.5' * 'mysql5.5-ubuntu-4.20' => '5.5' * '5.5-ubuntu-4.20' => '5.5' * '5.5-beta2' => '5.5' * '5.5' => '5.5' * * @since 1.7 * @return string sanitized DB version */ function yourls_get_database_version() { global $ydb; return preg_replace( '/(^[^0-9]*)|[^0-9.].*/', '', $ydb->mysql_version() ); } /** * Check if PHP > 5.2 * */ function yourls_check_php_version() { return ( version_compare( '5.2', phpversion() ) <= 0 ); } /** * Check if server is an Apache * */ function yourls_is_apache() { if( !array_key_exists( 'SERVER_SOFTWARE', $_SERVER ) ) return false; return ( strpos( $_SERVER['SERVER_SOFTWARE'], 'Apache' ) !== false || strpos( $_SERVER['SERVER_SOFTWARE'], 'LiteSpeed' ) !== false ); } /** * Check if server is running IIS * */ function yourls_is_iis() { return ( array_key_exists( 'SERVER_SOFTWARE', $_SERVER ) ? ( strpos( $_SERVER['SERVER_SOFTWARE'], 'IIS' ) !== false ) : false ); } /** * Create .htaccess or web.config. Returns boolean * */ function yourls_create_htaccess() { $host = parse_url( YOURLS_SITE ); $path = ( isset( $host['path'] ) ? $host['path'] : '' ); if ( yourls_is_iis() ) { // Prepare content for a web.config file $content = array( '', '', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '', ); $filename = YOURLS_ABSPATH.'/web.config'; $marker = 'none'; } else { // Prepare content for a .htaccess file $content = array( '', 'RewriteEngine On', 'RewriteBase '.$path.'/', 'RewriteCond %{REQUEST_FILENAME} !-f', 'RewriteCond %{REQUEST_FILENAME} !-d', 'RewriteRule ^.*$ '.$path.'/yourls-loader.php [L]', '', ); $filename = YOURLS_ABSPATH.'/.htaccess'; $marker = 'YOURLS'; } return ( yourls_insert_with_markers( $filename, $marker, $content ) ); } /** * Inserts $insertion (text in an array of lines) into $filename (.htaccess) between BEGIN/END $marker block. Returns bool. Stolen from WP * */ function yourls_insert_with_markers( $filename, $marker, $insertion ) { if ( !file_exists( $filename ) || is_writeable( $filename ) ) { if ( !file_exists( $filename ) ) { $markerdata = ''; } else { $markerdata = explode( "\n", implode( '', file( $filename ) ) ); } if ( !$f = @fopen( $filename, 'w' ) ) return false; $foundit = false; if ( $markerdata ) { $state = true; foreach ( $markerdata as $n => $markerline ) { if ( strpos( $markerline, '# BEGIN ' . $marker ) !== false ) $state = false; if ( $state ) { if ( $n + 1 < count( $markerdata ) ) fwrite( $f, "{$markerline}\n" ); else fwrite( $f, "{$markerline}" ); } if ( strpos( $markerline, '# END ' . $marker ) !== false ) { if ( $marker != 'none' ) fwrite( $f, "# BEGIN {$marker}\n" ); if ( is_array( $insertion ) ) foreach ( $insertion as $insertline ) fwrite( $f, "{$insertline}\n" ); if ( $marker != 'none' ) fwrite( $f, "# END {$marker}\n" ); $state = true; $foundit = true; } } } if ( !$foundit ) { if ( $marker != 'none' ) fwrite( $f, "\n\n# BEGIN {$marker}\n" ); foreach ( $insertion as $insertline ) fwrite( $f, "{$insertline}\n" ); if ( $marker != 'none' ) fwrite( $f, "# END {$marker}\n\n" ); } fclose( $f ); return true; } else { return false; } } /** * Create MySQL tables. Return array( 'success' => array of success strings, 'errors' => array of error strings ) * */ function yourls_create_sql_tables() { global $ydb; $error_msg = array(); $success_msg = array(); // Create Table Query $create_tables = array(); $create_tables[YOURLS_DB_TABLE_URL] = 'CREATE TABLE IF NOT EXISTS `'.YOURLS_DB_TABLE_URL.'` ('. '`keyword` varchar(200) BINARY NOT NULL,'. '`url` text BINARY NOT NULL,'. '`title` text CHARACTER SET utf8,'. '`timestamp` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,'. '`ip` VARCHAR(41) NOT NULL,'. '`clicks` INT(10) UNSIGNED NOT NULL,'. ' PRIMARY KEY (`keyword`),'. ' KEY `timestamp` (`timestamp`),'. ' KEY `ip` (`ip`)'. ');'; $create_tables[YOURLS_DB_TABLE_OPTIONS] = 'CREATE TABLE IF NOT EXISTS `'.YOURLS_DB_TABLE_OPTIONS.'` ('. '`option_id` bigint(20) unsigned NOT NULL auto_increment,'. '`option_name` varchar(64) NOT NULL default "",'. '`option_value` longtext NOT NULL,'. 'PRIMARY KEY (`option_id`,`option_name`),'. 'KEY `option_name` (`option_name`)'. ') AUTO_INCREMENT=1 ;'; $create_tables[YOURLS_DB_TABLE_LOG] = 'CREATE TABLE IF NOT EXISTS `'.YOURLS_DB_TABLE_LOG.'` ('. '`click_id` int(11) NOT NULL auto_increment,'. '`click_time` datetime NOT NULL,'. '`shorturl` varchar(200) BINARY NOT NULL,'. '`referrer` varchar(200) NOT NULL,'. '`user_agent` varchar(255) NOT NULL,'. '`ip_address` varchar(41) NOT NULL,'. '`country_code` char(2) NOT NULL,'. 'PRIMARY KEY (`click_id`),'. 'KEY `shorturl` (`shorturl`)'. ') AUTO_INCREMENT=1 ;'; $create_table_count = 0; $ydb->show_errors = true; // Create tables foreach ( $create_tables as $table_name => $table_query ) { $ydb->query( $table_query ); $create_success = $ydb->query( "SHOW TABLES LIKE '$table_name'" ); if( $create_success ) { $create_table_count++; $success_msg[] = yourls_s( "Table '%s' created.", $table_name ); } else { $error_msg[] = yourls_s( "Error creating table '%s'.", $table_name ); } } // Initializes the option table if( !yourls_initialize_options() ) $error_msg[] = yourls__( 'Could not initialize options' ); // Insert sample links if( !yourls_insert_sample_links() ) $error_msg[] = yourls__( 'Could not insert sample short URLs' ); // Check results of operations if ( sizeof( $create_tables ) == $create_table_count ) { $success_msg[] = yourls__( 'YOURLS tables successfully created.' ); } else { $error_msg[] = yourls__( 'Error creating YOURLS tables.' ); } return array( 'success' => $success_msg, 'error' => $error_msg ); } /** * Initializes the option table * * Each yourls_update_option() returns either true on success (option updated) or false on failure (new value == old value, or * for some reason it could not save to DB). * Since true & true & true = 1, we cast it to boolean type to return true (or false) * * @since 1.7 * @return bool */ function yourls_initialize_options() { return ( bool ) ( yourls_update_option( 'version', YOURLS_VERSION ) & yourls_update_option( 'db_version', YOURLS_DB_VERSION ) & yourls_update_option( 'next_id', 1 ) ); } /** * Populates the URL table with a few sample links * * @since 1.7 * @return bool */ function yourls_insert_sample_links() { $link1 = yourls_add_new_link( 'http://blog.yourls.org/', 'yourlsblog', 'YOURLS\' Blog' ); $link2 = yourls_add_new_link( 'http://yourls.org/', 'yourls', 'YOURLS: Your Own URL Shortener' ); $link3 = yourls_add_new_link( 'http://ozh.org/', 'ozh', 'ozh.org' ); return ( bool ) ( $link1['status'] == 'success' & $link2['status'] == 'success' & $link3['status'] == 'success' ); } /** * Toggle maintenance mode. Inspired from WP. Returns true for success, false otherwise * */ function yourls_maintenance_mode( $maintenance = true ) { $file = YOURLS_ABSPATH . '/.maintenance' ; // Turn maintenance mode on : create .maintenance file if ( (bool)$maintenance ) { if ( ! ( $fp = @fopen( $file, 'w' ) ) ) return false; $maintenance_string = ''; @fwrite( $fp, $maintenance_string ); @fclose( $fp ); @chmod( $file, 0644 ); // Read and write for owner, read for everybody else // Not sure why the fwrite would fail if the fopen worked... Just in case return( is_readable( $file ) ); // Turn maintenance mode off : delete the .maintenance file } else { return @unlink($file); } }