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<?php |
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|
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// +----------------------------------------------------------------------+ |
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// | Copyright 2013 Madpixels (email : visualizer@madpixels.net) | |
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// +----------------------------------------------------------------------+ |
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// | This program is free software; you can redistribute it and/or modify | |
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// | it under the terms of the GNU General Public License, version 2, as | |
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// | published by the Free Software Foundation. | |
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// | | |
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// | This program is distributed in the hope that it will be useful, | |
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// | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
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// | GNU General Public License for more details. | |
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// | | |
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// | You should have received a copy of the GNU General Public License | |
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// | along with this program; if not, write to the Free Software | |
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// | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
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// | MA 02110-1301 USA | |
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// +----------------------------------------------------------------------+ |
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// | Author: Eugene Manuilov <eugene@manuilov.org> | |
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// +----------------------------------------------------------------------+ |
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/** |
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* Source manager for query builder. |
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* |
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* @category Visualizer |
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* @package Source |
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*/ |
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class Visualizer_Source_Query extends Visualizer_Source { |
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|
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/** |
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* The query. |
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* |
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* @access protected |
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* @var string |
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*/ |
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protected $_query; |
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|
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/** |
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* The chart id. |
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* |
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* @access protected |
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* @var int |
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*/ |
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protected $_chart_id; |
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|
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/** |
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* Any additional parameters (e.g. for connecting to a remote db). |
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* |
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* @access protected |
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* @var array |
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*/ |
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protected $_params; |
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|
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/** |
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* Constructor. |
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* |
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* @access public |
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* @param string $query The query. |
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* @param int $chart_id The chart id. |
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* @param array $params Any additional parameters (e.g. for connecting to a remote db). |
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*/ |
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public function __construct( $query = null, $chart_id = null, $params = null ) { |
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$this->_query = $query; |
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$this->_chart_id = $chart_id; |
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$this->_params = $params; |
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} |
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|
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/** |
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* Fetches information from source, parses it and builds series and data arrays. |
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* |
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* @param bool $as_html Should the result be fetched as an HTML table or as an object. |
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* @param bool $results_as_numeric_array Should the result be fetched as ARRAY_N instead of ARRAY_A. |
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* @param bool $raw_results Should the result be returned without processing. |
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* @access public |
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* @return boolean TRUE on success, otherwise FALSE. |
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*/ |
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public function fetch( $as_html = false, $results_as_numeric_array = false, $raw_results = false ) { |
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if ( empty( $this->_query ) ) { |
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return false; |
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} |
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|
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// only select queries allowed. |
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if ( ! preg_match( '/\s*(\bselect\b)\s/i', $this->_query ) ) { |
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$this->_error = __( 'Only SELECT queries are allowed', 'visualizer' ); |
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return false; |
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} |
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|
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// if previous check passed, check for disallowed query parts to prevent subqueries and other harmful queries. |
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$disallow_query_parts = array( |
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'INSERT', |
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'UPDATE', |
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'DELETE', |
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'RENAME', |
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'DROP', |
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'CREATE', |
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'TRUNCATE', |
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'ALTER', |
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'COMMIT', |
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'ROLLBACK', |
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'MERGE', |
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'CALL', |
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'EXPLAIN', |
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'LOCK', |
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'GRANT', |
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'REVOKE', |
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'SAVEPOINT', |
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'TRANSACTION', |
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'SET', |
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); |
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$disallow_regex = implode( |
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'|', |
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array_map( |
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function ( $value ) { |
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return '\b' . $value . '\b'; |
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}, $disallow_query_parts |
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) |
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); |
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|
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if ( preg_match( '/(' . $disallow_regex . ')/i', $this->_query) !== 0 ) { |
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$this->_error = __( 'Only SELECT queries are allowed', 'visualizer' ); |
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return false; |
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} |
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|
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// impose a limit if no limit clause is provided. |
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if ( strpos( strtolower( $this->_query ), ' limit ' ) === false ) { |
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$this->_query .= ' LIMIT ' . apply_filters( 'visualizer_sql_query_limit', 1000, $this->_chart_id ); |
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} |
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|
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$this->_query = apply_filters( 'visualizer_db_query', $this->_query, $this->_chart_id, $this->_params ); |
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|
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$results = array(); |
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$headers = array(); |
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|
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// short circuit results for remote dbs. |
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if ( false !== ( $remote_results = apply_filters( 'visualizer_db_query_execute', false, $this->_query, $as_html, $results_as_numeric_array, $raw_results, $this->_chart_id, $this->_params ) ) ) { |
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$error = $remote_results['error']; |
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if ( empty( $error ) ) { |
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$results = $remote_results['results']; |
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$headers = $remote_results['headers']; |
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} |
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|
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$this->_error = $error; |
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|
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if ( $raw_results ) { |
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return $results; |
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} |
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} |
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|
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if ( ! ( $results && $headers ) ) { |
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global $wpdb; |
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$wpdb->hide_errors(); |
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// @codingStandardsIgnoreStart |
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$rows = $wpdb->get_results( $this->_query, $results_as_numeric_array ? ARRAY_N : ARRAY_A ); |
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// @codingStandardsIgnoreEnd |
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$wpdb->show_errors(); |
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|
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if ( $raw_results ) { |
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return $rows; |
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} |
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|
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if ( $rows ) { |
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$results = array(); |
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$headers = array(); |
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if ( $rows ) { |
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$row_num = 0; |
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foreach ( $rows as $row ) { |
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$result = array(); |
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$col_num = 0; |
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foreach ( $row as $k => $v ) { |
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$result[] = $v; |
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if ( 0 === $row_num ) { |
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$headers[] = array( 'type' => $this->get_col_type( $col_num++ ), 'label' => $k ); |
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} |
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} |
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$results[] = $result; |
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$row_num++; |
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} |
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} |
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|
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$this->_error = $wpdb->last_error; |
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} |
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} |
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// Query log. |
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do_action( 'themeisle_log_event', Visualizer_Plugin::NAME, sprintf( 'Firing query %s to get results %s with error %s', $this->_query, print_r( $rows, true ), print_r( $wpdb->last_error, true ) ), 'debug', __FILE__, __LINE__ ); |
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|
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if ( $as_html ) { |
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$results = $this->html( $headers, $results ); |
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} else { |
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$results = $this->object( $headers, $results ); |
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} |
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|
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return apply_filters( 'visualizer_db_query_results', $results, $headers, $as_html, $results_as_numeric_array, $raw_results, $this->_query, $this->_chart_id, $this->_params ); |
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} |
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|
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/** |
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* Get the data type of the column. |
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* |
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* @param int $col_num The column index in the fetched result set. |
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* @access private |
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* @return int |
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*/ |
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private function get_col_type( $col_num ) { |
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global $wpdb; |
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switch ( $wpdb->get_col_info( 'type', $col_num ) ) { |
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case 0: |
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case 5: |
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case 4: |
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case 9: |
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case 3: |
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case 2: |
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case 246: |
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case 8: |
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// numeric. |
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return 'number'; |
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case 10: |
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case 12: |
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case 14: |
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// date. |
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return 'date'; |
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} |
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return 'string'; |
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} |
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|
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/** |
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* Returns the HTML output. |
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* |
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* @param array $headers The headers of the result set. |
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* @param array $results The data of the result set. |
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* @access private |
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* @return string |
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*/ |
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private function html( $headers, $results ) { |
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return Visualizer_Render_Layout::show( 'db-wizard-results', $headers, $results ); |
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} |
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|
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/** |
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* Sets the series and data. |
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* |
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* @param array $headers The headers of the result set. |
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* @param array $results The data of the result set. |
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* @access private |
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* @return bool |
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*/ |
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private function object( $headers, $results ) { |
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$series = array(); |
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foreach ( $headers as $header ) { |
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$series[] = $header; |
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} |
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$this->_series = $series; |
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|
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$data = array(); |
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foreach ( $results as $row ) { |
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$data[] = $this->_normalizeData( $row ); |
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} |
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$this->_data = $data; |
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return $this->_data; |
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} |
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|
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/** |
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* Returns the final query. |
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* |
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* @access public |
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* @return string |
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*/ |
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public function get_query() { |
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return $this->_query; |
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} |
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|
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/** |
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* Returns source name. |
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* |
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* @since 1.0.0 |
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* |
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* @access public |
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* @return string The name of source. |
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*/ |
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public function getSourceName() { |
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return __CLASS__; |
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} |
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} |
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|
