web/wp-content/plugins/bbpress/includes/admin/converter.php
changeset 196 5e8dcbe22c24
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-content/plugins/bbpress/includes/admin/converter.php	Tue Dec 04 18:43:10 2012 -0800
@@ -0,0 +1,1295 @@
+<?php
+
+/**
+ * bbPress Converter
+ *
+ * Based on the hard work of Adam Ellis at http://bbconverter.com
+ *
+ * @package bbPress
+ * @subpackage Administration
+ */
+
+// Exit if accessed directly
+if ( !defined( 'ABSPATH' ) ) exit;
+
+/**
+ * Main BBP_Converter Class
+ */
+class BBP_Converter {
+
+	/**
+	 * The main bbPress Converter loader
+	 *
+	 * @since bbPress (r3813)
+	 * @uses BBP_Converter::includes() Include the required files
+	 * @uses BBP_Converter::setup_actions() Setup the actions
+	 */
+	public function __construct() {
+
+		// Bail if request is not correct
+		switch ( strtoupper( $_SERVER['REQUEST_METHOD'] ) ) {
+
+			// Converter is converting
+			case 'POST' :
+				if ( ( empty( $_POST['action'] ) || ( 'bbconverter_process' !=  $_POST['action'] ) ) )
+					return;
+
+				break;
+
+			// Some other admin page
+			case 'GET'  :
+				if ( ( empty( $_GET['page'] ) || ( 'bbp-converter' !=  $_GET['page'] ) ) )
+					return;
+
+				break;
+		}
+
+		// Proceed with the actions
+		$this->setup_actions();
+	}
+
+	/**
+	 * Setup the default actions
+	 *
+	 * @since bbPress (r3813)
+	 * @uses add_action() To add various actions
+	 */
+	private function setup_actions() {
+
+		// Attach to the admin head with our ajax requests cycle and css
+		add_action( 'bbp_admin_head',              array( $this, 'admin_head'              ) );
+
+		// Attach the bbConverter admin settings action to the WordPress admin init action.
+		add_action( 'bbp_register_admin_settings', array( $this, 'register_admin_settings' ) );
+
+		// Attach to the admin ajax request to process cycles
+		add_action( 'wp_ajax_bbconverter_process', array( $this, 'process_callback'        ) );
+	}
+
+	/**
+	 * Register the settings
+	 *
+	 * @since bbPress (r3813)
+	 * @uses add_settings_section() To add our own settings section
+	 * @uses add_settings_field() To add various settings fields
+	 * @uses register_setting() To register various settings
+	 */
+	public function register_admin_settings() {
+
+		// Add the main section
+		add_settings_section( 'bbpress_converter_main',     __( 'Database Settings', 'bbpress' ),  'bbp_converter_setting_callback_main_section', 'bbpress_converter' );
+
+		// System Select
+		add_settings_field( '_bbp_converter_platform',      __( 'Select Platform',   'bbpress' ),  'bbp_converter_setting_callback_platform', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_platform',           'sanitize_title' );
+
+		// Database Server
+		add_settings_field( '_bbp_converter_db_server',     __( 'Database Server',   'bbpress' ),  'bbp_converter_setting_callback_dbserver', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_server',          'sanitize_title' );
+
+		// Database Server Port
+		add_settings_field( '_bbp_converter_db_port',       __( 'Database Port',     'bbpress' ),  'bbp_converter_setting_callback_dbport', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_port',            'sanitize_title' );
+
+		// Database Name
+		add_settings_field( '_bbp_converter_db_name',       __( 'Database Name',     'bbpress' ),  'bbp_converter_setting_callback_dbname', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_name',            'sanitize_title' );
+
+		// Database User
+		add_settings_field( '_bbp_converter_db_user',       __( 'Database User',     'bbpress' ),  'bbp_converter_setting_callback_dbuser', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_user',            'sanitize_title' );
+
+		// Database Pass
+		add_settings_field( '_bbp_converter_db_pass',       __( 'Database Password', 'bbpress' ),  'bbp_converter_setting_callback_dbpass', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_pass',            'sanitize_title' );
+
+		// Database Prefix
+		add_settings_field( '_bbp_converter_db_prefix',     __( 'Table Prefix',      'bbpress' ),  'bbp_converter_setting_callback_dbprefix', 'bbpress_converter', 'bbpress_converter_main' );
+		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_prefix',          'sanitize_title' );
+
+		// Add the options section
+		add_settings_section( 'bbpress_converter_opt',      __( 'Options',           'bbpress' ),  'bbp_converter_setting_callback_options_section', 'bbpress_converter' );
+
+		// Rows Limit
+		add_settings_field( '_bbp_converter_rows',          __( 'Rows Limit',        'bbpress' ),  'bbp_converter_setting_callback_rows', 'bbpress_converter', 'bbpress_converter_opt' );
+		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_rows',               'intval' );
+
+		// Delay Time
+		add_settings_field( '_bbp_converter_delay_time',    __( 'Delay Time',        'bbpress' ), 'bbp_converter_setting_callback_delay_time', 'bbpress_converter', 'bbpress_converter_opt' );
+		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_delay_time',        'intval' );
+
+		// Convert Users ?
+		add_settings_field( '_bbp_converter_convert_users', __( 'Convert Users',     'bbpress' ), 'bbp_converter_setting_callback_convert_users', 'bbpress_converter', 'bbpress_converter_opt' );
+		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_convert_users',     'intval' );
+
+		// Restart
+		add_settings_field( '_bbp_converter_restart',       __( 'Start Over',        'bbpress' ), 'bbp_converter_setting_callback_restart', 'bbpress_converter', 'bbpress_converter_opt' );
+		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_restart',           'intval' );
+
+		// Clean
+		add_settings_field( '_bbp_converter_clean',         __( 'Purge Previous Import', 'bbpress' ), 'bbp_converter_setting_callback_clean', 'bbpress_converter', 'bbpress_converter_opt' );
+		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_clean',             'intval' );
+	}
+
+	/**
+	 * Admin scripts
+	 *
+	 * @since bbPress (r3813)
+	 */
+	public function admin_head() { ?>
+
+		<style type="text/css" media="screen">
+			/*<![CDATA[*/
+
+			div.bbp-converter-updated,
+			div.bbp-converter-warning {
+				border-radius: 3px 3px 3px 3px;
+				border-style: solid;
+				border-width: 1px;
+				padding: 5px 5px 5px 5px;
+			}
+
+			div.bbp-converter-updated {
+				height: 300px;
+				overflow: auto;
+				display: none;
+				background-color: #FFFFE0;
+				border-color: #E6DB55;
+				font-family: monospace;
+				font-weight: bold;
+			}
+
+			div.bbp-converter-updated p {
+				margin: 0.5em 0;
+				padding: 2px;
+				float: left;
+				clear: left;
+			}
+
+			div.bbp-converter-updated p.loading {
+				padding: 2px 20px 2px 2px;
+				background-image: url('<?php echo admin_url(); ?>images/wpspin_light.gif');
+				background-repeat: no-repeat;
+				background-position: center right;
+			}
+
+			#bbp-converter-stop {
+				display:none;
+			}
+
+			#bbp-converter-progress {
+				display:none;
+			}
+
+			/*]]>*/
+		</style>
+
+		<script language="javascript">
+
+			var bbconverter_is_running = false;
+			var bbconverter_run_timer;
+			var bbconverter_delay_time = 0;
+
+			function bbconverter_grab_data() {
+				var values = {};
+				jQuery.each(jQuery('#bbp-converter-settings').serializeArray(), function(i, field) {
+					values[field.name] = field.value;
+				});
+
+				if( values['_bbp_converter_restart'] ) {
+					jQuery('#_bbp_converter_restart').removeAttr("checked");
+				}
+
+				if( values['_bbp_converter_delay_time'] ) {
+					bbconverter_delay_time = values['_bbp_converter_delay_time'] * 1000;
+				}
+
+				values['action'] = 'bbconverter_process';
+				values['_ajax_nonce'] = '<?php echo  wp_create_nonce( 'bbp_converter_process' ); ?>';
+
+				return values;
+			}
+
+			function bbconverter_start() {
+				if( false == bbconverter_is_running ) {
+					bbconverter_is_running = true;
+					jQuery('#bbp-converter-start').hide();
+					jQuery('#bbp-converter-stop').show();
+					jQuery('#bbp-converter-progress').show();
+					bbconverter_log( '<p class="loading"><?php _e( 'Starting Conversion', 'bbpress' ); ?></p>' );
+					bbconverter_run();
+				}
+			}
+
+			function bbconverter_run() {
+				jQuery.post(ajaxurl, bbconverter_grab_data(), function(response) {
+					var response_length = response.length - 1;
+					response = response.substring(0,response_length);
+					bbconverter_success(response);
+				});
+			}
+
+			function bbconverter_stop() {
+				jQuery('#bbp-converter-start').show();
+				jQuery('#bbp-converter-stop').hide();
+				jQuery('#bbp-converter-progress').hide();
+				jQuery('#bbp-converter-message p').removeClass( 'loading' );
+				bbconverter_is_running = false;
+				clearTimeout( bbconverter_run_timer );
+			}
+
+			function bbconverter_success(response) {
+				bbconverter_log(response);
+
+				if ( response == '<p class="loading"><?php _e( 'Conversion Complete', 'bbpress' ); ?></p>' || response.indexOf('error') > -1 ) {
+					bbconverter_log('<p>Repair any missing information: <a href="<?php echo admin_url(); ?>tools.php?page=bbp-repair">Continue</a></p>');
+					bbconverter_stop();
+				} else if( bbconverter_is_running ) { // keep going
+					jQuery('#bbp-converter-progress').show();
+					clearTimeout( bbconverter_run_timer );
+					bbconverter_run_timer = setTimeout( 'bbconverter_run()', bbconverter_delay_time );
+				} else {
+					bbconverter_stop();
+				}
+			}
+
+			function bbconverter_log(text) {
+				if ( jQuery('#bbp-converter-message').css('display') == 'none' ) {
+					jQuery('#bbp-converter-message').show();
+				}
+				if ( text ) {
+					jQuery('#bbp-converter-message p').removeClass( 'loading' );
+					jQuery('#bbp-converter-message').prepend( text );
+				}
+			}
+
+		</script>
+
+		<?php
+	}
+
+	/**
+	 * Wrap the converter output in paragraph tags, so styling can be applied
+	 *
+	 * @since bbPress (r4052)
+	 *
+	 * @param string $output
+	 */
+	private static function converter_output( $output = '' ) {
+
+		// Get the last query
+		$before = '<p class="loading">';
+		$after  = '</p>';
+		$query  = get_option( '_bbp_converter_query' );
+
+		if ( ! empty( $query ) )
+			$before = '<p class="loading" title="' . esc_attr( $query ) . '">';
+
+		echo $before . $output . $after;
+	}
+
+	/**
+	 * Callback processor
+	 *
+	 * @since bbPress (r3813)
+	 */
+	public function process_callback() {
+
+		// Verify intent
+		check_ajax_referer( 'bbp_converter_process' );
+
+		if ( ! ini_get( 'safe_mode' ) ) {
+			set_time_limit( 0 );
+			ini_set( 'memory_limit',   '256M' );
+			ini_set( 'implicit_flush', '1'    );
+			ignore_user_abort( true );
+		}
+
+		// Save step and count so that it can be restarted.
+		if ( ! get_option( '_bbp_converter_step' ) || ( !empty( $_POST['_bbp_converter_restart'] ) ) ) {
+			update_option( '_bbp_converter_step',  1 );
+			update_option( '_bbp_converter_start', 0 );
+		}
+
+		$step  = (int) get_option( '_bbp_converter_step',  1 );
+		$min   = (int) get_option( '_bbp_converter_start', 0 );
+		$count = (int) ! empty( $_POST['_bbp_converter_rows'] ) ? $_POST['_bbp_converter_rows'] : 100;
+		$max   = ( $min + $count ) - 1;
+		$start = $min;
+
+		// Bail if platform did not get saved
+		$platform = !empty( $_POST['_bbp_converter_platform' ] ) ? $_POST['_bbp_converter_platform' ] : get_option( '_bbp_converter_platform' );
+		if ( empty( $platform ) )
+			return;
+
+		// Include the appropriate converter.
+		$converter = bbp_new_converter( $platform );
+
+		switch ( $step ) {
+
+			// STEP 1. Clean all tables.
+			case 1 :
+				if ( !empty( $_POST['_bbp_converter_clean'] ) ) {
+					if ( $converter->clean( $start ) ) {
+						update_option( '_bbp_converter_step',  $step + 1 );
+						update_option( '_bbp_converter_start', 0         );
+						$this->sync_table( true );
+						if ( empty( $start ) ) {
+							$this->converter_output( __( 'No data to clean', 'bbpress' ) );
+						}
+					} else {
+						update_option( '_bbp_converter_start', $max + 1 );
+						$this->converter_output( sprintf( __( 'Deleting previously converted data (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+					}
+				} else {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+				}
+
+				break;
+
+			// STEP 2. Convert users.
+			case 2 :
+				if ( !empty( $_POST['_bbp_converter_convert_users'] ) ) {
+					if ( $converter->convert_users( $start ) ) {
+						update_option( '_bbp_converter_step',  $step + 1 );
+						update_option( '_bbp_converter_start', 0         );
+						if ( empty( $start ) ) {
+							$this->converter_output( __( 'No users to convert', 'bbpress' ) );
+						}
+					} else {
+						update_option( '_bbp_converter_start', $max + 1 );
+						$this->converter_output( sprintf(  __( 'Converting users (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+					}
+				} else {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+				}
+
+				break;
+
+			// STEP 3. Clean passwords.
+			case 3 :
+				if ( !empty( $_POST['_bbp_converter_convert_users'] ) ) {
+					if ( $converter->clean_passwords( $start ) ) {
+						update_option( '_bbp_converter_step',  $step + 1 );
+						update_option( '_bbp_converter_start', 0         );
+						if ( empty( $start ) ) {
+							$this->converter_output( __( 'No passwords to clear', 'bbpress' ) );
+						}
+					} else {
+						update_option( '_bbp_converter_start', $max + 1 );
+						$this->converter_output( sprintf( __( 'Delete users wordpress default passwords (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+					}
+				} else {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+				}
+
+				break;
+
+			// STEP 4. Convert forums.
+			case 4 :
+				if ( $converter->convert_forums( $start ) ) {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+					if ( empty( $start ) ) {
+						$this->converter_output( __( 'No forums to convert', 'bbpress' ) );
+					}
+				} else {
+					update_option( '_bbp_converter_start', $max + 1 );
+					$this->converter_output( sprintf( __( 'Converting forums (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+				}
+
+				break;
+
+			// STEP 5. Convert forum parents.
+			case 5 :
+				if ( $converter->convert_forum_parents( $start ) ) {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+					if ( empty( $start ) ) {
+						$this->converter_output( __( 'No forum parents to convert', 'bbpress' ) );
+					}
+				} else {
+					update_option( '_bbp_converter_start', $max + 1 );
+					$this->converter_output( sprintf( __( 'Calculating forum hierarchy (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+				}
+
+				break;
+
+			// STEP 6. Convert topics.
+			case 6 :
+				if ( $converter->convert_topics( $start ) ) {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+					if ( empty( $start ) ) {
+						$this->converter_output( __( 'No topics to convert', 'bbpress' ) );
+					}
+				} else {
+					update_option( '_bbp_converter_start', $max + 1 );
+					$this->converter_output( sprintf( __( 'Converting topics (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+				}
+
+				break;
+
+			// STEP 7. Convert tags.
+			case 7 :
+				if ( $converter->convert_tags( $start ) ) {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+					if ( empty( $start ) ) {
+						$this->converter_output( __( 'No tags to convert', 'bbpress' ) );
+					}
+				} else {
+					update_option( '_bbp_converter_start', $max + 1 );
+					$this->converter_output( sprintf( __( 'Converting topic tags (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+				}
+
+				break;
+
+			// STEP 8. Convert replies.
+			case 8 :
+				if ( $converter->convert_replies( $start ) ) {
+					update_option( '_bbp_converter_step',  $step + 1 );
+					update_option( '_bbp_converter_start', 0         );
+					if ( empty( $start ) ) {
+						$this->converter_output( __( 'No replies to convert', 'bbpress' ) );
+					}
+				} else {
+					update_option( '_bbp_converter_start', $max + 1 );
+					$this->converter_output( sprintf( __( 'Converting replies (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
+				}
+
+				break;
+
+			default :
+				delete_option( '_bbp_converter_step'  );
+				delete_option( '_bbp_converter_start' );
+				delete_option( '_bbp_converter_query' );
+
+				$this->converter_output( __( 'Conversion Complete', 'bbpress' ) );
+
+				break;
+		}
+	}
+
+	/**
+	 * Create Tables for fast syncing
+	 *
+	 * @since bbPress (r3813)
+	 */
+	public function sync_table( $drop = false ) {
+		global $wpdb;
+
+		$table_name = $wpdb->prefix . 'bbp_converter_translator';
+		if ( ! empty( $drop ) && $wpdb->get_var( "SHOW TABLES LIKE '{$table_name}'" ) == $table_name )
+			$wpdb->query( "DROP TABLE {$table_name}" );
+
+		require_once( ABSPATH . '/wp-admin/includes/upgrade.php' );
+
+		if ( !empty( $wpdb->charset ) ) {
+			$charset_collate = "DEFAULT CHARACTER SET $wpdb->charset";
+		}
+
+		if ( !empty( $wpdb->collate ) ) {
+			$charset_collate .= " COLLATE $wpdb->collate";
+		}
+
+		/** Translator ****************************************************/
+
+		$sql = "CREATE TABLE {$table_name} (
+					meta_id mediumint(8) unsigned not null auto_increment,
+					value_type varchar(25) null,
+					value_id bigint(20) unsigned not null default '0',
+					meta_key varchar(25) null,
+					meta_value varchar(25) null,
+				PRIMARY KEY  (meta_id),
+					KEY value_id (value_id),
+					KEY meta_join (meta_key, meta_value) ) {$charset_collate};";
+
+		dbDelta( $sql );
+	}
+}
+
+/**
+ * Base class to be extended by specific individual importers
+ *
+ * @since bbPress (r3813)
+ */
+abstract class BBP_Converter_Base {
+
+	/**
+	 * @var array() This is the field mapping array to process.
+	 */
+	protected $field_map = array();
+
+	/**
+	 * @var object This is the connection to the wordpress datbase.
+	 */
+	protected $wpdb;
+
+	/**
+	 * @var object This is the connection to the other platforms database.
+	 */
+	protected $opdb;
+
+	/**
+	 * @var int This is the max rows to process at a time.
+	 */
+	public $max_rows;
+
+	/**
+	 * @var array() Map of topic to forum.  It is for optimization.
+	 */
+	private $map_topicid_to_forumid = array();
+
+	/**
+	 * @var array() Map of from old forum ids to new forum ids.  It is for optimization.
+	 */
+	private $map_forumid = array();
+
+	/**
+	 * @var array() Map of from old topic ids to new topic ids.  It is for optimization.
+	 */
+	private $map_topicid = array();
+
+	/**
+	 * @var array() Map of from old user ids to new user ids.  It is for optimization.
+	 */
+	private $map_userid = array();
+
+	/**
+	 * @var str This is the charset for your wp database.
+	 */
+	public $charset;
+
+	/**
+	 * @var boolean Sync table available.
+	 */
+	public $sync_table = false;
+
+	/**
+	 * @var str Sync table name.
+	 */
+	public $sync_table_name;
+
+	/** Methods ***************************************************************/
+
+	/**
+	 * This is the constructor and it connects to the platform databases.
+	 */
+	public function __construct() {
+		$this->setup_globals();
+	}
+
+	private function setup_globals() {
+		global $wpdb;
+
+		/** Get database connections ******************************************/
+
+		$this->wpdb         = $wpdb;
+		$this->max_rows     = (int) $_POST['_bbp_converter_rows'];
+		$this->opdb         = new wpdb( $_POST['_bbp_converter_db_user'], $_POST['_bbp_converter_db_pass'], $_POST['_bbp_converter_db_name'], $_POST['_bbp_converter_db_server'] );
+		$this->opdb->prefix = $_POST['_bbp_converter_db_prefix'];
+
+		/**
+		 * Error Reporting
+		 */
+		$this->wpdb->show_errors();
+		$this->opdb->show_errors();
+
+		/**
+		 * Syncing
+		 */
+		$this->sync_table_name = $this->wpdb->prefix . 'bbp_converter_translator';
+		if ( $this->wpdb->get_var( "SHOW TABLES LIKE '" . $this->sync_table_name . "'" ) == $this->sync_table_name ) {
+			$this->sync_table = true;
+		} else {
+			$this->sync_table = false;
+		}
+
+		/**
+		 * Charset
+		 */
+		if ( empty( $this->wpdb->charset ) ) {
+			$this->charset = 'UTF8';
+		} else {
+			$this->charset = $this->wpdb->charset;
+		}
+
+		/**
+		 * Default mapping.
+		 */
+
+		/** Forum Section *****************************************************/
+
+		$this->field_map[] = array(
+			'to_type'      => 'forum',
+			'to_fieldname' => 'post_status',
+			'default'      => 'publish'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'forum',
+			'to_fieldname' => 'comment_status',
+			'default'      => 'closed'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'forum',
+			'to_fieldname' => 'ping_status',
+			'default'      => 'closed'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'forum',
+			'to_fieldname' => 'post_type',
+			'default'      => 'forum'
+		);
+
+		/** Topic Section *****************************************************/
+
+		$this->field_map[] = array(
+			'to_type'      => 'topic',
+			'to_fieldname' => 'post_status',
+			'default'      => 'publish'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'topic',
+			'to_fieldname' => 'comment_status',
+			'default'      => 'closed'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'topic',
+			'to_fieldname' => 'ping_status',
+			'default'      => 'closed'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'topic',
+			'to_fieldname' => 'post_type',
+			'default'      => 'topic'
+		);
+
+		/** Post Section ******************************************************/
+
+		$this->field_map[] = array(
+			'to_type'      => 'reply',
+			'to_fieldname' => 'post_status',
+			'default'      => 'publish'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'reply',
+			'to_fieldname' => 'comment_status',
+			'default'      => 'closed'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'reply',
+			'to_fieldname' => 'ping_status',
+			'default'      => 'closed'
+		);
+		$this->field_map[] = array(
+			'to_type'      => 'reply',
+			'to_fieldname' => 'post_type',
+			'default'      => 'reply'
+		);
+
+		/** User Section ******************************************************/
+
+		$this->field_map[] = array(
+			'to_type'      => 'user',
+			'to_fieldname' => 'role',
+			'default'      => get_option( 'default_role' )
+		);
+	}
+
+	/**
+	 * Convert Forums
+	 */
+	public function convert_forums( $start = 1 ) {
+		return $this->convert_table( 'forum', $start );
+	}
+
+	/**
+	 * Convert Topics / Threads
+	 */
+	public function convert_topics( $start = 1 ) {
+		return $this->convert_table( 'topic', $start );
+	}
+
+	/**
+	 * Convert Posts
+	 */
+	public function convert_replies( $start = 1 ) {
+		return $this->convert_table( 'reply', $start );
+	}
+
+	/**
+	 * Convert Users
+	 */
+	public function convert_users( $start = 1 ) {
+		return $this->convert_table( 'user', $start );
+	}
+
+	/**
+	 * Convert Tags
+	 */
+	public function convert_tags( $start = 1 ) {
+		return $this->convert_table( 'tags', $start );
+	}
+
+	/**
+	 * Convert Table
+	 *
+	 * @param string to type
+	 * @param int Start row
+	 */
+	public function convert_table( $to_type, $start ) {
+
+		// Are we usig a sync table, or postmeta?
+		if ( $this->wpdb->get_var( "SHOW TABLES LIKE '" . $this->sync_table_name . "'" ) == $this->sync_table_name ) {
+			$this->sync_table = true;
+		} else {
+			$this->sync_table = false;
+		}
+
+		// Set some defaults
+		$has_insert     = false;
+		$from_tablename = '';
+		$field_list     = $from_tables = $tablefield_array = array();
+
+		// Toggle Table Name based on $to_type (destination)
+		switch ( $to_type ) {
+			case 'user' :
+				$tablename = $this->wpdb->users;
+				break;
+
+			case 'tags' :
+				$tablename = '';
+				break;
+
+			default :
+				$tablename = $this->wpdb->posts;
+		}
+
+		// Get the fields from the destination table
+		if ( !empty( $tablename ) ) {
+			$tablefield_array = $this->get_fields( $tablename );
+		}
+
+		/** Step 1 ************************************************************/
+
+		// Loop through the field maps, and look for to_type matches
+		foreach ( $this->field_map as $item ) {
+
+			// Yay a match, and we have a from table, too
+			if ( ( $item['to_type'] == $to_type ) && !empty( $item['from_tablename'] ) ) {
+
+				// $from_tablename was set from a previous loop iteration
+				if ( ! empty( $from_tablename ) ) {
+
+					// Doing some joining
+					if ( !in_array( $item['from_tablename'], $from_tables ) && in_array( $item['join_tablename'], $from_tables ) ) {
+						$from_tablename .= ' ' . $item['join_type'] . ' JOIN ' . $this->opdb->prefix . $item['from_tablename'] . ' AS ' . $item['from_tablename'] . ' ' . $item['join_expression'];
+					}
+
+				// $from_tablename needs to be set
+				} else {
+					$from_tablename = $item['from_tablename'] . ' AS ' . $item['from_tablename'];
+				}
+
+				// Specific FROM expression data used
+				if ( !empty( $item['from_expression'] ) ) {
+
+					// No 'WHERE' in expression
+					if ( stripos( $from_tablename, "WHERE" ) === false ) {
+						$from_tablename .= ' ' . $item['from_expression'];
+
+					// 'WHERE' in expression, so replace with 'AND'
+					} else {
+						$from_tablename .= ' ' . str_replace( "WHERE", "AND", $item['from_expression'] );
+					}
+				}
+
+				// Add tablename and fieldname to arrays, formatted for querying
+				$from_tables[] = $item['from_tablename'];
+				$field_list[]  = 'convert(' . $item['from_tablename'] . '.' . $item['from_fieldname'] . ' USING "' . $this->charset . '") AS ' . $item['from_fieldname'];
+			}
+		}
+
+		/** Step 2 ************************************************************/
+
+		// We have a $from_tablename, so we want to get some data to convert
+		if ( !empty( $from_tablename ) ) {
+
+			// Get some data from the old forums
+			$field_list  = array_unique( $field_list );
+			$forum_query = 'SELECT ' . implode( ',', $field_list ) . ' FROM ' . $this->opdb->prefix . $from_tablename . ' LIMIT ' . $start . ', ' . $this->max_rows;
+			$forum_array = $this->opdb->get_results( $forum_query, ARRAY_A );
+
+			// Set this query as the last one ran
+			update_option( '_bbp_converter_query', $forum_query );
+
+			// Query returned some results
+			if ( !empty( $forum_array ) ) {
+
+				// Loop through results
+				foreach ( (array) $forum_array as $forum ) {
+
+					// Reset some defaults
+					$insert_post = $insert_postmeta = $insert_data = array();
+
+					// Loop through field map, again...
+					foreach ( $this->field_map as $row ) {
+
+						// Types matchand to_fieldname is present. This means
+						// we have some work to do here.
+						if ( ( $row['to_type'] == $to_type ) && ! is_null( $row['to_fieldname'] ) ) {
+
+							// This row has a destination that matches one of the
+							// columns in this table.
+							if ( in_array( $row['to_fieldname'], $tablefield_array ) ) {
+
+								// Allows us to set default fields.
+								if ( isset( $row['default'] ) ) {
+									$insert_post[$row['to_fieldname']] = $row['default'];
+
+								// Translates a field from the old forum.
+								} elseif ( isset( $row['callback_method'] ) ) {
+									if ( ( 'callback_userid' == $row['callback_method'] ) && empty( $_POST['_bbp_converter_convert_users'] ) ) {
+										$insert_post[$row['to_fieldname']] = $forum[$row['from_fieldname']];
+									} else {
+										$insert_post[$row['to_fieldname']] = call_user_func_array( array( $this, $row['callback_method'] ), array( $forum[$row['from_fieldname']], $forum ) );
+									}
+
+								// Maps the field from the old forum.
+								} else {
+									$insert_post[$row['to_fieldname']] = $forum[$row['from_fieldname']];
+								}
+
+							// Destination field is not empty, so we might need
+							// to do some extra work or set a default.
+							} elseif ( !empty( $row['to_fieldname'] ) ) {
+
+								// Allows us to set default fields.
+								if ( isset( $row['default'] ) ) {
+									$insert_postmeta[$row['to_fieldname']] = $row['default'];
+
+								// Translates a field from the old forum.
+								} elseif ( isset( $row['callback_method'] ) ) {
+									if ( ( $row['callback_method'] == 'callback_userid' ) && ( 0 == $_POST['_bbp_converter_convert_users'] ) ) {
+										$insert_postmeta[$row['to_fieldname']] = $forum[$row['from_fieldname']];
+									} else {
+										$insert_postmeta[$row['to_fieldname']] = call_user_func_array( array( $this, $row['callback_method'] ), array( $forum[$row['from_fieldname']], $forum ) );
+									}
+
+								// Maps the field from the old forum.
+								} else {
+									$insert_postmeta[$row['to_fieldname']] = $forum[$row['from_fieldname']];
+								}
+							}
+						}
+					}
+
+					/** Step 3 ************************************************/
+
+					// Something to insert into the destination field
+					if ( count( $insert_post ) > 0 || ( $to_type == 'tags' && count( $insert_postmeta ) > 0 ) ) {
+
+						switch ( $to_type ) {
+
+							/** New user **************************************/
+
+							case 'user':
+								if ( username_exists( $insert_post['user_login'] ) ) {
+									$insert_post['user_login'] = 'imported_' . $insert_post['user_login'];
+								}
+
+								if ( email_exists( $insert_post['user_email'] ) ) {
+									$insert_post['user_email'] = 'imported_' . $insert_post['user_email'];
+								}
+
+								$post_id = wp_insert_user( $insert_post );
+
+								if ( is_numeric( $post_id ) ) {
+
+									foreach ( $insert_postmeta as $key => $value ) {
+
+										add_user_meta( $post_id, $key, $value, true );
+
+										if ( '_id' == substr( $key, -3 ) && ( true === $this->sync_table ) ) {
+											$this->wpdb->insert( $this->sync_table_name, array( 'value_type' => 'user', 'value_id' => $post_id, 'meta_key' => $key, 'meta_value' => $value ) );
+										}
+									}
+								}
+								break;
+
+							/** New Topic-Tag *********************************/
+
+							case 'tags':
+								$post_id = wp_set_object_terms( $insert_postmeta['objectid'], $insert_postmeta['name'], 'topic-tag', true );
+								break;
+
+							/** Forum, Topic, Reply ***************************/
+
+							default:
+								$post_id = wp_insert_post( $insert_post );
+
+								if ( is_numeric( $post_id ) ) {
+
+									foreach ( $insert_postmeta as $key => $value ) {
+
+										add_post_meta( $post_id, $key, $value, true );
+
+										// Forums need to save their old ID for group forum association
+										if ( ( 'forum' == $to_type ) && ( '_bbp_forum_id' == $key ) )
+											add_post_meta( $post_id, '_bbp_old_forum_id', $value );
+
+										// Topics need an extra bit of metadata
+										// to be keyed to the new post_id
+										if ( ( 'topic' == $to_type ) && ( '_bbp_topic_id' == $key ) ) {
+
+											// Update the live topic ID
+											update_post_meta( $post_id, $key, $post_id );
+
+											// Save the old topic ID
+											add_post_meta( $post_id, '_bbp_old_topic_id', $value );
+											if ( '_id' == substr( $key, -3 ) && ( true === $this->sync_table ) ) {
+												$this->wpdb->insert( $this->sync_table_name, array( 'value_type' => 'post', 'value_id' => $post_id, 'meta_key' => '_bbp_topic_id',     'meta_value' => $post_id ) );
+												$this->wpdb->insert( $this->sync_table_name, array( 'value_type' => 'post', 'value_id' => $post_id, 'meta_key' => '_bbp_old_topic_id', 'meta_value' => $value   ) );
+											}
+
+										} elseif ( '_id' == substr( $key, -3 ) && ( true === $this->sync_table ) ) {
+											$this->wpdb->insert( $this->sync_table_name, array( 'value_type' => 'post', 'value_id' => $post_id, 'meta_key' => $key, 'meta_value' => $value ) );
+										}
+									}
+								}
+								break;
+						}
+						$has_insert = true;
+					}
+				}
+			}
+		}
+
+		return ! $has_insert;
+	}
+
+	public function convert_forum_parents( $start ) {
+
+		$has_update = false;
+
+		if ( !empty( $this->sync_table ) )
+			$query = 'SELECT value_id, meta_value FROM ' . $this->sync_table_name . ' WHERE meta_key = "_bbp_forum_parent_id" AND meta_value > 0 LIMIT ' . $start . ', ' . $this->max_rows;
+		else
+			$query = 'SELECT post_id AS value_id, meta_value FROM ' . $this->wpdb->postmeta . ' WHERE meta_key = "_bbp_forum_parent_id" AND meta_value > 0 LIMIT ' . $start . ', ' . $this->max_rows;
+
+		update_option( '_bbp_converter_query', $query );
+
+		$forum_array = $this->wpdb->get_results( $query );
+
+		foreach ( (array) $forum_array as $row ) {
+			$parent_id = $this->callback_forumid( $row->meta_value );
+			$this->wpdb->query( 'UPDATE ' . $this->wpdb->posts . ' SET post_parent = "' . $parent_id . '" WHERE ID = "' . $row->value_id . '" LIMIT 1' );
+			$has_update = true;
+		}
+
+		return ! $has_update;
+	}
+
+	/**
+	 * This method deletes data from the wp database.
+	 */
+	public function clean( $start ) {
+
+		$start      = 0;
+		$has_delete = false;
+
+		/** Delete bbconverter topics/forums/posts ****************************/
+
+		if ( true === $this->sync_table )
+			$query = 'SELECT value_id FROM ' . $this->sync_table_name . ' INNER JOIN ' . $this->wpdb->posts . ' ON(value_id = ID) WHERE meta_key LIKE "_bbp_%" AND value_type = "post" GROUP BY value_id ORDER BY value_id DESC LIMIT ' . $this->max_rows;
+		else
+			$query = 'SELECT post_id AS value_id FROM ' . $this->wpdb->postmeta . ' WHERE meta_key LIKE "_bbp_%" GROUP BY post_id ORDER BY post_id DESC LIMIT ' . $this->max_rows;
+
+		update_option( '_bbp_converter_query', $query );
+
+		$posts = $this->wpdb->get_results( $query, ARRAY_A );
+
+		if ( isset( $posts[0] ) && ! empty( $posts[0]['value_id'] ) ) {
+			foreach ( (array) $posts as $value ) {
+				wp_delete_post( $value['value_id'], true );
+			}
+			$has_delete = true;
+		}
+
+		/** Delete bbconverter users ******************************************/
+
+		if ( true === $this->sync_table )
+			$query = 'SELECT value_id FROM ' . $this->sync_table_name . ' INNER JOIN ' . $this->wpdb->users . ' ON(value_id = ID) WHERE meta_key = "_bbp_user_id" AND value_type = "user" LIMIT ' . $this->max_rows;
+		else
+			$query = 'SELECT user_id AS value_id FROM ' . $this->wpdb->usermeta . ' WHERE meta_key = "_bbp_user_id" LIMIT ' . $this->max_rows;
+
+		update_option( '_bbp_converter_query', $query );
+
+		$users = $this->wpdb->get_results( $query, ARRAY_A );
+
+		if ( !empty( $users ) ) {
+			foreach ( $users as $value ) {
+				wp_delete_user( $value['value_id'] );
+			}
+			$has_delete = true;
+		}
+
+		unset( $posts );
+		unset( $users );
+
+		return ! $has_delete;
+	}
+
+	/**
+	 * This method deletes passwords from the wp database.
+	 *
+	 * @param int Start row
+	 */
+	public function clean_passwords( $start ) {
+
+		$has_delete = false;
+
+		/** Delete bbconverter passwords **************************************/
+
+		$query       = 'SELECT user_id, meta_value FROM ' . $this->wpdb->usermeta . ' WHERE meta_key = "_bbp_password" LIMIT ' . $start . ', ' . $this->max_rows;
+		update_option( '_bbp_converter_query', $query );
+
+		$bbconverter = $this->wpdb->get_results( $query, ARRAY_A );
+
+		if ( !empty( $bbconverter ) ) {
+
+			foreach ( $bbconverter as $value ) {
+				if ( is_serialized( $value['meta_value'] ) ) {
+					$this->wpdb->query( 'UPDATE ' . $this->wpdb->users . ' ' . 'SET user_pass = "" ' . 'WHERE ID = "' . $value['user_id'] . '"' );
+				} else {
+					$this->wpdb->query( 'UPDATE ' . $this->wpdb->users . ' ' . 'SET user_pass = "' . $value['meta_value'] . '" ' . 'WHERE ID = "' . $value['user_id'] . '"' );
+					$this->wpdb->query( 'DELETE FROM ' . $this->wpdb->usermeta . ' WHERE meta_key = "_bbp_password" AND user_id = "' . $value['user_id'] . '"' );
+				}
+			}
+			$has_delete = true;
+		}
+
+		return ! $has_delete;
+	}
+
+	/**
+	 * This method implements the authentication for the different forums.
+	 *
+	 * @param string Unencoded password.
+	 */
+	abstract protected function authenticate_pass( $password, $hash );
+
+	/**
+	 * Info
+	 */
+	abstract protected function info();
+
+	/**
+	 * This method grabs appropriate fields from the table specified
+	 *
+	 * @param string The table name to grab fields from
+	 */
+	private function get_fields( $tablename ) {
+		$rval        = array();
+		$field_array = $this->wpdb->get_results( 'DESCRIBE ' . $tablename, ARRAY_A );
+
+		foreach ( $field_array as $field ) {
+			$rval[] = $field['Field'];
+		}
+
+		if ( $tablename == $this->wpdb->users ) {
+			$rval[] = 'role';
+			$rval[] = 'yim';
+			$rval[] = 'aim';
+			$rval[] = 'jabber';
+		}
+		return $rval;
+	}
+
+	/** Callbacks *************************************************************/
+
+	/**
+	 * Run password through wp_hash_password()
+	 *
+	 * @param string $username
+	 * @param string $password
+	 */
+	public function callback_pass( $username, $password ) {
+		$user = $this->wpdb->get_row( 'SELECT * FROM ' . $this->wpdb->users . ' WHERE user_login = "' . $username . '" AND user_pass = "" LIMIT 1' );
+		if ( !empty( $user ) ) {
+			$usermeta = $this->wpdb->get_row( 'SELECT * FROM ' . $this->wpdb->usermeta . ' WHERE meta_key = "_bbp_password" AND user_id = "' . $user->ID . '" LIMIT 1' );
+
+			if ( !empty( $usermeta ) ) {
+				if ( $this->authenticate_pass( $password, $usermeta->meta_value ) ) {
+					$this->wpdb->query( 'UPDATE ' . $this->wpdb->users . ' ' . 'SET user_pass = "' . wp_hash_password( $password ) . '" ' . 'WHERE ID = "' . $user->ID . '"' );
+					$this->wpdb->query( 'DELETE FROM ' . $this->wpdb->usermeta . ' WHERE meta_key = "_bbp_password" AND user_id = "' . $user->ID . '"' );
+				}
+			}
+		}
+	}
+
+	/**
+	 * A mini cache system to reduce database calls to forum ID's
+	 *
+	 * @param string $field
+	 * @return string
+	 */
+	private function callback_forumid( $field ) {
+		if ( !isset( $this->map_forumid[$field] ) ) {
+			if ( !empty( $this->sync_table ) ) {
+				$row = $this->wpdb->get_row( 'SELECT value_id, meta_value FROM ' . $this->sync_table_name . ' WHERE meta_key = "_bbp_forum_id" AND meta_value = "' . $field . '" LIMIT 1' );
+			} else {
+				$row = $this->wpdb->get_row( 'SELECT post_id AS value_id FROM ' . $this->wpdb->postmeta . ' WHERE meta_key = "_bbp_forum_id" AND meta_value = "' . $field . '" LIMIT 1' );
+			}
+
+			if ( !is_null( $row ) ) {
+				$this->map_forumid[$field] = $row->value_id;
+			} else {
+				$this->map_forumid[$field] = 0;
+			}
+		}
+		return $this->map_forumid[$field];
+	}
+
+	/**
+	 * A mini cache system to reduce database calls to topic ID's
+	 *
+	 * @param string $field
+	 * @return string
+	 */
+	private function callback_topicid( $field ) {
+		if ( !isset( $this->map_topicid[$field] ) ) {
+			if ( !empty( $this->sync_table ) ) {
+				$row = $this->wpdb->get_row( 'SELECT value_id, meta_value FROM ' . $this->sync_table_name . ' WHERE meta_key = "_bbp_old_topic_id" AND meta_value = "' . $field . '" LIMIT 1' );
+			} else {
+				$row = $this->wpdb->get_row( 'SELECT post_id AS value_id FROM ' . $this->wpdb->postmeta . ' WHERE meta_key = "_bbp_old_topic_id" AND meta_value = "' . $field . '" LIMIT 1' );
+			}
+
+			if ( !is_null( $row ) ) {
+				$this->map_topicid[$field] = $row->value_id;
+			} else {
+				$this->map_topicid[$field] = 0;
+			}
+		}
+		return $this->map_topicid[$field];
+	}
+
+	/**
+	 * A mini cache system to reduce database calls to user ID's
+	 *
+	 * @param string $field
+	 * @return string
+	 */
+	private function callback_userid( $field ) {
+		if ( !isset( $this->map_userid[$field] ) ) {
+			if ( !empty( $this->sync_table ) ) {
+				$row = $this->wpdb->get_row( 'SELECT value_id, meta_value FROM ' . $this->sync_table_name . ' WHERE meta_key = "_bbp_user_id" AND meta_value = "' . $field . '" LIMIT 1' );
+			} else {
+				$row = $this->wpdb->get_row( 'SELECT user_id AS value_id FROM ' . $this->wpdb->usermeta . ' WHERE meta_key = "_bbp_user_id" AND meta_value = "' . $field . '" LIMIT 1' );
+			}
+
+			if ( !is_null( $row ) ) {
+				$this->map_userid[$field] = $row->value_id;
+			} else {
+				if ( !empty( $_POST['_bbp_converter_convert_users'] ) && ( $_POST['_bbp_converter_convert_users'] == 1 ) ) {
+					$this->map_userid[$field] = 0;
+				} else {
+					$this->map_userid[$field] = $field;
+				}
+			}
+		}
+		return $this->map_userid[$field];
+	}
+
+	/**
+	 * A mini cache system to reduce database calls map topics ID's to forum ID's
+	 *
+	 * @param string $field
+	 * @return string
+	 */
+	private function callback_topicid_to_forumid( $field ) {
+		$topicid = $this->callback_topicid( $field );
+		if ( empty( $topicid ) ) {
+			$this->map_topicid_to_forumid[$topicid] = 0;
+		} elseif ( ! isset( $this->map_topicid_to_forumid[$topicid] ) ) {
+			$row = $this->wpdb->get_row( 'SELECT post_parent FROM ' . $this->wpdb->posts . ' WHERE ID = "' . $topicid . '" LIMIT 1' );
+
+			if ( !is_null( $row ) ) {
+				$this->map_topicid_to_forumid[$topicid] = $row->post_parent;
+			} else {
+				$this->map_topicid_to_forumid[$topicid] = 0;
+			}
+		}
+
+		return $this->map_topicid_to_forumid[$topicid];
+	}
+
+	protected function callback_slug( $field ) {
+		return sanitize_title( $field );
+	}
+
+	protected function callback_negative( $field ) {
+		if ( $field < 0 ) {
+			return 0;
+		} else {
+			return $field;
+		}
+	}
+
+	protected function callback_html( $field ) {
+		require_once( bbpress()->admin->admin_dir . 'parser.php' );
+		$bbcode = BBCode::getInstance();
+		return html_entity_decode( $bbcode->Parse( $field ) );
+	}
+
+	protected function callback_null( $field ) {
+		if ( is_null( $field ) ) {
+			return '';
+		} else {
+			return $field;
+		}
+	}
+
+	protected function callback_datetime( $field ) {
+		if ( is_numeric( $field ) ) {
+			return date( 'Y-m-d H:i:s', $field );
+		} else {
+			return date( 'Y-m-d H:i:s', strtotime( $field ) );
+		}
+	}
+}
+
+/**
+ * This is a function that is purposely written to look like a "new" statement.
+ * It is basically a dynamic loader that will load in the platform conversion
+ * of your choice.
+ *
+ * @param string $platform Name of valid platform class.
+ */
+function bbp_new_converter( $platform ) {
+	$found = false;
+
+	if ( $curdir = opendir( bbpress()->admin->admin_dir . 'converters/' ) ) {
+		while ( $file = readdir( $curdir ) ) {
+			if ( stristr( $file, '.php' ) && stristr( $file, 'index' ) === FALSE ) {
+				$file = preg_replace( '/.php/', '', $file );
+				if ( $platform == $file ) {
+					$found = true;
+					continue;
+				}
+			}
+		}
+		closedir( $curdir );
+	}
+
+	if ( true === $found ) {
+		require_once( bbpress()->admin->admin_dir . 'converters/' . $platform . '.php' );
+		return new $platform;
+	} else {
+		return null;
+	}
+}