<?php
// $Id: handler.php,v 1.11 2008/12/20 06:11:27 ohwada Exp $

//=========================================================
// webphoto module
// 2008-04-02 K.OHWADA
//=========================================================

//---------------------------------------------------------
// change log
// 2008-12-12 K.OHWADA
// check_perm_by_row_name_groups()
// 2008-11-29 K.OHWADA
// build_show_file_image()
// 2008-10-01 K.OHWADA
// added update_xoops_config()
// 2008-08-24 K.OHWADA
// added is_image_kind() get_cat_cached_row_by_id()
// 2008-07-01 K.OHWADA
// added exists_column()
// added is_video_mime()
//---------------------------------------------------------

if( ! defined( 'XOOPS_TRUST_PATH' ) ) die( 'not permit' ) ;

//=========================================================
// class webphoto_inc_handler
//=========================================================
class webphoto_inc_handler
{
	var $_db;
	var $_db_error;

	var $_xoops_groups = null ;

	var $_DIRNAME;
	var $_MODULE_URL;
	var $_MODULE_DIR;

	var $_ROOT_EXTS_URL ;
	var $_DEFAULT_ICON_SRC;
	var $_PIXEL_ICON_SRC;

	var $_NORMAL_EXTS;

	var $_PERM_ALLOW_ALL = '*' ;
	var $_PERM_DENOY_ALL = 'x' ;
	var $_PERM_SEPARATOR = '&' ;

	var $_DEBUG_SQL   = false;
	var $_DEBUG_ERROR = false;

//---------------------------------------------------------
// constructor
//---------------------------------------------------------
function webphoto_inc_handler()
{
	$this->_db =& Database::getInstance();

	$this->_init_xoops_groups();
}

function init_handler( $dirname )
{
	$this->_DIRNAME = $dirname;
	$this->_MODULE_URL = XOOPS_URL       .'/modules/'.$dirname;
	$this->_MODULE_DIR = XOOPS_ROOT_PATH .'/modules/'.$dirname;

	$this->_ROOT_EXTS_URL    = $this->_MODULE_URL .'/images/exts';
	$this->_DEFAULT_ICON_SRC = $this->_MODULE_URL .'/images/exts/default.png';
	$this->_PIXEL_ICON_SRC   = $this->_MODULE_URL .'/images/icons/pixel_trans.png';

	$constpref = strtoupper( '_P_' . $dirname. '_' ) ;
	$this->set_debug_sql_by_const_name(   $constpref.'DEBUG_INC_SQL' );
	$this->set_debug_error_by_const_name( $constpref.'DEBUG_INC_ERROR' );
}

//---------------------------------------------------------
// xoops config table
//---------------------------------------------------------
function update_xoops_config()
{
	// configs (Though I know it is not a recommended way...)
	$table_config = $this->_db->prefix("config");

	$check_sql = "SHOW COLUMNS FROM ". $table_config ." LIKE 'conf_title'" ;
	$row = $this->get_row_by_sql( $check_sql );
	if ( !is_array($row) ) { 
		return false; 
	}

// default: varchar(30)
	if ( preg_match( '/varchar\((\d+)\)/i', $row['Type'], $matches ) ) {
		if ( $matches[1] > 30 ) {
			return true; 
		}
	}

	$sql  = "ALTER TABLE ". $table_config;
	$sql .= " MODIFY `conf_title` varchar(255) NOT NULL default '', ";
	$sql .= " MODIFY `conf_desc`  varchar(255) NOT NULL default '' ";

	return $this->query( $sql );
}

//---------------------------------------------------------
// cat handler
//---------------------------------------------------------
function get_cat_row_by_id( $cat_id )
{
	$sql  = 'SELECT * FROM '. $this->prefix_dirname( 'cat' );
	$sql .= ' WHERE cat_id='.intval($cat_id);
	return $this->get_row_by_sql( $sql );
}

//---------------------------------------------------------
// item handler
//---------------------------------------------------------
function get_item_row_by_id( $item_id )
{
	$sql  = 'SELECT * FROM '. $this->prefix_dirname( 'item' );
	$sql .= ' WHERE item_id='. intval($item_id);
	return $this->get_row_by_sql( $sql );
}

function build_show_icon_image( $item_row )
{
	$url    = null ;
	$name   = $item_row['item_icon_name'] ;
	$width  = $item_row['item_icon_width'] ;
	$height = $item_row['item_icon_height'] ;
	if ( $name ) {
		$url = $this->_ROOT_EXTS_URL .'/'. $name ;
	}
	return array( $url, $width, $height ) ;
}

//---------------------------------------------------------
// file handler
//---------------------------------------------------------
function get_file_row_by_kind( $item_row, $kind )
{
	$id = $this->get_file_id_by_kind( $item_row, $kind );
	if ( $id > 0 ) {
		return $this->get_file_row_by_id( $id );
	}
	return false ;
}

function get_file_id_by_kind( $item_row, $kind )
{
	$name = 'item_file_id_'.$kind;
	if ( isset( $item_row[ $name ] ) ) {
		return  $item_row[ $name ] ;
	}
	return false ;
}

function get_file_row_by_id( $file_id )
{
	$sql  = 'SELECT * FROM '. $this->prefix_dirname( 'file' );
	$sql .= ' WHERE file_id='. intval($file_id) ;
	return $this->get_row_by_sql( $sql );
}

function build_show_file_image( $file_row )
{
	$url    = null ;
	$width  = 0 ;
	$height = 0 ;

	if ( is_array($file_row) ) {
		$url    = $file_row['file_url'] ;
		$path   = $file_row['file_path'] ;
		$width  = $file_row['file_width'] ;
		$height = $file_row['file_height'] ;
		if ( $path ) {
			$url = XOOPS_URL .'/'. $path ;
		}
	}

	return array( $url, $width, $height );
}

//---------------------------------------------------------
// get
//---------------------------------------------------------
function get_count_by_sql( $sql )
{
	return intval( $this->get_first_row_by_sql( $sql ) );
}

function get_first_row_by_sql( $sql )
{
	$res = $this->query($sql);
	if ( !$res ) { return false; }

	$row = $this->_db->fetchRow( $res );
	if ( isset( $row[0] ) ) {
		return $row[0];
	}

	return false;
}

function get_row_by_sql( $sql )
{
	$res = $this->query( $sql );
	if ( !$res ) { return false; }

	$row = $this->_db->fetchArray($res);
	return $row; 
}

function get_rows_by_sql( $sql, $limit=0, $offset=0, $key=null )
{
	$arr = array();

	$res = $this->query( $sql, $limit, $offset );
	if ( !$res ) { return false; }

	while ( $row = $this->_db->fetchArray($res) ) 
	{
		if ( $key && isset( $row[ $key ] ) ) {
			$arr[ $row[ $key ] ] = $row;
		} else {
			$arr[] = $row;
		}
	}
	return $arr; 
}

function get_first_rows_by_sql( $sql, $limit=0, $offset=0 )
{
	$res = $this->query( $sql, $limit, $offset );
	if ( !$res ) { return false; }

	$arr = array();

	while ( $row = $this->_db->fetchRow($res) ) {
		$arr[] = $row[0];
	}
	return $arr;
}

//---------------------------------------------------------
// update
//---------------------------------------------------------
function exists_table( $table )
{
	$sql = "SHOW TABLES LIKE ". $this->quote($table);

	$res = $this->query($sql); 
	if ( !$res ) {
		return false;
	}

	while ( $row = $this->_db->fetchRow( $res ) ) {
		if ( strtolower( $row[0] ) == strtolower( $table ) ) {
			return true;
		}
	}

	return false;
}

function exists_column( $table, $column )
{
	$row = $this->get_column_row( $table, $column );
	if ( is_array($row) ) {
		return true;
	}
	return false;
}

function get_column_row( $table, $column )
{
	$sql = "SHOW COLUMNS FROM ". $table. " LIKE ". $this->quote($column);

	$res =& $this->query($sql); 
	if ( !$res ) {
		return false;
	}

	while ( $row = $this->_db->fetchArray( $res ) )
	{
		if ( $row['Field'] == $column ) {
			return $row;
		}
	}

	return false;
}

//---------------------------------------------------------
// handler
//---------------------------------------------------------
function query( $sql, $limit=0, $offset=0, $force=false )
{
	if ( $force ) {
		return $this->queryF( $sql, $limit, $offset );
	}

	if ( $this->_DEBUG_SQL ) {
		echo $this->sanitize( $sql ) .': limit='. $limit .' :offset='. $offset. "<br />\n";
	}

	$res = $this->_db->query( $sql, intval($limit), intval($offset) );
	if ( !$res  ) {
		$this->_db_error = $this->_db->error();
		if ( $this->_DEBUG_ERROR ) {
			echo $this->highlight( $this->_db_error )."<br />\n";
		}
	}

	return $res;
}

function queryF( $sql, $limit=0, $offset=0 )
{
	if ( $this->_DEBUG_SQL ) {
		echo $this->sanitize( $sql ) .': limit='. $limit .' :offset='. $offset. "<br />\n";
	}

	$res = $this->_db->queryF( $sql, intval($limit), intval($offset) );
	if ( !$res ) {
		$this->_db_error = $this->_db->error();
		if ( $this->_DEBUG_ERROR ) {
			echo $this->highlight( $this->_db_error )."<br />\n";
		}
	}

	return $res;
}

function prefix_dirname( $name )
{
	return $this->_db->prefix( $this->_DIRNAME.'_'.$name ) ;
}

function quote( $str )
{
	$str = "'". addslashes($str) ."'";
	return $str;
}

//---------------------------------------------------------
// item cat handler
// require $_xoops_groups $_cfg_perm_item_read
//---------------------------------------------------------
function build_where_public_with_item_cat( $groups=null )
{
	$where  = $this->convert_item_field( 
		$this->build_where_public_with_item() ) ;
	$where .= ' AND ';
	$where .= $this->build_where_cat_perm_read( $groups ) ;

	return $where;
}

function build_where_public_with_item( $groups=null )
{
	$where = ' item_status > 0 ';
	if ( $this->_cfg_perm_item_read != _C_WEBPHOTO_OPT_PERM_READ_ALL ) {
		$where .= ' AND ';
		$where .= $this->build_where_item_perm_read( $groups ) ;
	}
	return $where;
}

function build_where_cat_perm_read( $groups=null )
{
	$where = $this->build_where_perm_groups( 'c.cat_perm_read', $groups );
	return $where;
}

function build_where_item_perm_read( $groups=null )
{
	$where = $this->build_where_perm_groups( 'item_perm_read', $groups );
	return $where;
}

function get_item_count_by_where_with_cat( $where )
{
	$sql  = 'SELECT COUNT(*) FROM ';
	$sql .= $this->prefix_dirname( 'item' ) .' i ';
	$sql .= ' INNER JOIN ';
	$sql .= $this->prefix_dirname( 'cat' ) .' c ';
	$sql .= ' ON i.item_cat_id = c.cat_id ';
	$sql .= ' WHERE '. $where;
	return $this->get_count_by_sql( $sql );
}

function get_item_count_by_where( $where )
{
	$sql  = 'SELECT COUNT(*) FROM ';
	$sql .= $this->prefix_dirname( 'item' ) ;
	$sql .= ' WHERE '. $where;
	return $this->get_count_by_sql( $sql );
}

function get_item_rows_by_where_orderby_with_cat( $where, $orderby, $limit=0, $offset=0 )
{
	$sql  = 'SELECT i.* FROM ';
	$sql .= $this->prefix_dirname( 'item' ) .' i ';
	$sql .= ' INNER JOIN ';
	$sql .= $this->prefix_dirname( 'cat' ) .' c ';
	$sql .= ' ON i.item_cat_id = c.cat_id ';
	$sql .= ' WHERE '. $where;
	$sql .= ' ORDER BY '. $orderby;
	return $this->get_rows_by_sql( $sql, $limit, $offset );
}

function get_item_rows_by_where_orderby( $where, $orderby, $limit=0, $offset=0 )
{
	$sql  = 'SELECT * FROM ';
	$sql .= $this->prefix_dirname( 'item' ) ;
	$sql .= ' WHERE '. $where;
	$sql .= ' ORDER BY '. $orderby;
	return $this->get_rows_by_sql( $sql, $limit, $offset );
}

function convert_item_field( $str )
{
	return str_replace( 'item_', 'i.item_', $str );
}

//---------------------------------------------------------
// permission
//---------------------------------------------------------
function build_where_perm_groups( $name, $groups=null )
{
	if ( empty($groups) ) {
		$groups = $this->_xoops_groups ;
	}

	$pre  = '%'. $this->_PERM_SEPARATOR ; 
	$post = $this->_PERM_SEPARATOR . '%' ;

	$where = $name .'='. $this->quote( $this->_PERM_ALLOW_ALL ) ;

	if ( is_array($groups) && count($groups) ) {
		foreach ( $groups as $group ) 
		{
			$where .= ' OR '. $name .' LIKE ';
			$where .= $this->quote( $pre . intval($group) . $post ) ;
		}
	}

	return ' ( '. $where .' ) ';
}

function check_perm_by_row_name_groups( $row, $name, $groups=null )
{
	if ( ! isset( $row[ $name ] ) ) {
		return false ;
	}

	$val = $row[ $name ] ;

	if ( $this->_PERM_ALLOW_ALL && ( $val == $this->_PERM_ALLOW_ALL ) ) {
		return true;
	}

	if ( $this->_PERM_DENOY_ALL && ( $val == $this->_PERM_DENOY_ALL ) ) {
		return false;
	}

	$perms = $this->str_to_array( $val, $this->_PERM_SEPARATOR );
	return $this->check_perms_in_groups( $perms, $groups );
}

function check_perms_in_groups( $perms, $groups=null )
{
	if ( !is_array($perms) || !count($perms) ) {
		return false;
	}

	if ( empty($groups) ) {
		$groups = $this->_xoops_groups ;
	}

	$arr = array_intersect( $groups, $perms );
	if ( is_array($arr) && count($arr) ) {
		return true;
	}
	return false;
}

//---------------------------------------------------------
// utility
//---------------------------------------------------------
function str_to_array( $str, $pattern )
{
	$arr1 = explode( $pattern, $str );
	$arr2 = array();
	foreach ( $arr1 as $v )
	{
		$v = trim($v);
		if ($v == '') { continue; }
		$arr2[] = $v;
	}
	return $arr2;
}

function array_to_str( $arr, $glue )
{
	$val = false;
	if ( is_array($arr) && count($arr) ) {
		$val = implode($glue, $arr);
	}
	return $val;
}

function is_normal_ext( $ext )
{
	if ( in_array( strtolower( $ext ) , $this->_NORMAL_EXTS ) ) {
		return true;
	}
	return false;
}

function set_normal_exts( $val )
{
	if ( is_array($val) ) {
		$this->_NORMAL_EXTS = $val;
	} else {
		$this->_NORMAL_EXTS = explode( '|', $val );
	}
}

function is_video_mime( $mime )
{
	if ( preg_match('/^video/', $mime ) ) {
		return true;
	}
	return false;
}

function is_image_kind( $kind )
{
	if ( $kind == _C_WEBPHOTO_ITEM_KIND_IMAGE ) {
		return true;
	}
	return false;
}

function is_video_kind( $kind )
{
	if ( $kind == _C_WEBPHOTO_ITEM_KIND_VIDEO ) {
		return true;
	}
	return false;
}

function check_http_null( $str )
{
	if ( ($str == '') || ($str == 'http://') || ($str == 'https://') ) {
		return true;
	}
	return false;
}

function check_http_start( $str )
{
	if ( preg_match("|^https?://|", $str) ) {
		return true;	// include HTTP
	}
	return false;
}

function add_slash_to_head( $str )
{
// ord : the ASCII value of the first character of string
// 0x2f slash

	if( ord( $str ) != 0x2f ) {
		$str = "/". $str;
	}
	return $str;
}

//---------------------------------------------------------
// error
//---------------------------------------------------------
function get_db_error( $flag_sanitize=true, $flag_highlight=true )
{
	$str = $this->_db_error;
	if ( $flag_sanitize ) {
		$str = $this->sanitize( $str );
	}
	if ( $flag_highlight ) {
		$str = $this->highlight( $str );
	}
	return $str;
}

function sanitize( $str )
{
	return htmlspecialchars( $str, ENT_QUOTES );
}

function highlight( $str )
{
	$val = '<span style="color:#ff0000;">'. $str .'</span>';
	return $val;
}

//---------------------------------------------------------
// debug
//---------------------------------------------------------
function set_debug_sql_by_const_name( $name )
{
	$name = strtoupper( $name );
	if ( defined($name) ) {
		$this->set_debug_sql( constant($name) );
	}
}

function set_debug_error_by_const_name( $name )
{
	$name = strtoupper( $name );
	if ( defined($name) ) {
		$this->set_debug_error( constant($name) );
	}
}

function set_debug_sql( $val )
{
	$this->_DEBUG_SQL = (bool)$val;
}

function set_debug_error( $val )
{
	$this->_DEBUG_ERROR = (bool)$val;
}

//---------------------------------------------------------
// xoops groups
//---------------------------------------------------------
function _init_xoops_groups()
{
	global $xoopsUser;
	if ( is_object($xoopsUser) ) {
		$this->_xoops_groups = $xoopsUser->getGroups() ;
	} else {
		$this->_xoops_groups = array( XOOPS_GROUP_ANONYMOUS );
	}
}

// --- class end ---
}

?>