728 lines
No EOL
17 KiB
PHP
728 lines
No EOL
17 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based picture gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008 Piwigo Team http://piwigo.org |
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// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
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// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
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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 as published by |
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// | the Free Software Foundation |
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// | |
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// | This program is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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/**
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* returns a prefix for each url link on displayed page
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* and return an empty string for current path
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* @return string
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*/
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function get_root_url()
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{
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global $page;
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if ( isset($page['root_path']) )
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{
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$root_url = $page['root_path'];
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}
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else
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{// TODO - add HERE the possibility to call PWG functions from external scripts
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$root_url = PHPWG_ROOT_PATH;
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}
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if ( dirname($root_url)!='.' )
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{
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return $root_url;
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}
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else
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{
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return (string)substr($root_url, 2);
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}
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}
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/**
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* returns the absolute url to the root of PWG
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* @param boolean with_scheme if false - does not add http://toto.com
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*/
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function get_absolute_root_url($with_scheme=true)
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{
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// TODO - add HERE the possibility to call PWG functions from external scripts
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$url = '';
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if ($with_scheme)
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{
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if (empty($_SERVER['HTTPS']))
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{
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$url .= 'http://';
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}
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else
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{
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$url .= 'https://';
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}
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$url .= $_SERVER['HTTP_HOST'];
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if ($_SERVER['SERVER_PORT'] != 80)
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{
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$url_port = ':'.$_SERVER['SERVER_PORT'];
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if (strrchr($url, ':') != $url_port)
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{
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$url .= $url_port;
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}
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}
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}
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$url .= cookie_path();
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return $url;
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}
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/**
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* adds one or more _GET style parameters to an url
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* example: add_url_params('/x', array('a'=>'b')) returns /x?a=b
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* add_url_params('/x?cat_id=10', array('a'=>'b')) returns /x?cat_id=10&a=b
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* @param string url
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* @param array params
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* @return string
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*/
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function add_url_params($url, $params)
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{
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if ( !empty($params) )
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{
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assert( is_array($params) );
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$is_first = true;
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foreach($params as $param=>$val)
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{
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if ($is_first)
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{
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$is_first = false;
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$url .= ( strstr($url, '?')===false ) ? '?' :'&';
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}
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else
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{
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$url .= '&';
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}
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$url .= $param;
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if (isset($val))
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{
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$url .= '='.$val;
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}
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}
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}
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return $url;
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}
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/**
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* build an index URL for a specific section
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*
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* @param array
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* @return string
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*/
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function make_index_url($params = array())
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{
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global $conf;
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$url = get_root_url().'index';
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if ($conf['php_extension_in_urls'])
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{
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$url .= '.php';
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}
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if ($conf['question_mark_in_urls'])
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{
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$url .= '?';
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}
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$url.= make_section_in_url($params);
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$url = add_well_known_params_in_url($url, $params);
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return $url;
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}
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/**
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* build an index URL with current page parameters, but with redefinitions
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* and removes.
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*
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* duplicate_index_url( array(
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* 'category' => array('id'=>12, 'name'=>'toto'),
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* array('start')
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* ) will create an index URL on the current section (categories), but on
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* a redefined category and without the start URL parameter.
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*
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* @param array redefined keys
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* @param array removed keys
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* @return string
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*/
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function duplicate_index_url($redefined = array(), $removed = array())
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{
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return make_index_url(
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params_for_duplication($redefined, $removed)
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);
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}
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/**
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* returns $page global array with key redefined and key removed
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*
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* @param array redefined keys
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* @param array removed keys
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* @return array
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*/
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function params_for_duplication($redefined, $removed)
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{
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global $page;
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if (count($removed) > 0)
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{
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$params = array();
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foreach ($page as $page_item_key => $page_item_value)
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{
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if (!in_array($page_item_key, $removed))
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{
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$params[$page_item_key] = $page_item_value;
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}
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}
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}
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else
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{
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$params = $page;
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}
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foreach ($redefined as $redefined_param => $redefined_value)
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{
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$params[$redefined_param] = $redefined_value;
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}
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return $params;
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}
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/**
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* create a picture URL with current page parameters, but with redefinitions
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* and removes. See duplicate_index_url.
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*
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* @param array redefined keys
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* @param array removed keys
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* @return string
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*/
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function duplicate_picture_url($redefined = array(), $removed = array())
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{
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return make_picture_url(
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params_for_duplication($redefined, $removed)
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);
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}
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/**
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* create a picture URL on a specific section for a specific picture
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*
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* @param array
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* @return string
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*/
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function make_picture_url($params)
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{
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global $conf;
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isset($params['image_id']) or fatal_error('make_picture_url: image_id is a required parameter');
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$url = get_root_url().'picture';
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if ($conf['php_extension_in_urls'])
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{
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$url .= '.php';
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}
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if ($conf['question_mark_in_urls'])
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{
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$url .= '?';
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}
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$url.= '/';
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switch ( $conf['picture_url_style'] )
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{
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case 'id-file':
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$url .= $params['image_id'];
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if ( isset($params['image_file']) )
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{
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$url .= '-'.get_filename_wo_extension($params['image_file']);
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}
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break;
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case 'file':
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if ( isset($params['image_file']) )
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{
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$fname_wo_ext = get_filename_wo_extension($params['image_file']);
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if (! preg_match('/^\d+(-|$)/', $fname_wo_ext) )
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{
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$url .= $fname_wo_ext;
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break;
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}
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}
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default:
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$url .= $params['image_id'];
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}
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if ( !isset($params['category'] ) )
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{// make urls shorter ...
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unset( $params['flat'] );
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}
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$url .= make_section_in_url($params);
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$url = add_well_known_params_in_url($url, $params);
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return $url;
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}
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/**
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*adds to the url the chronology and start parameters
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*/
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function add_well_known_params_in_url($url, $params)
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{
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if ( isset($params['chronology_field']) )
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{
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$url .= '/'. $params['chronology_field'];
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$url .= '-'. $params['chronology_style'];
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if ( isset($params['chronology_view']) )
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{
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$url .= '-'. $params['chronology_view'];
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}
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if ( !empty($params['chronology_date']) )
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{
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$url .= '-'. implode('-', $params['chronology_date'] );
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}
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}
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if (isset($params['flat']))
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{
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$url.= '/flat';
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}
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if (isset($params['start']) and $params['start'] > 0)
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{
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$url.= '/start-'.$params['start'];
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}
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return $url;
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}
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/**
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* return the section token of an index or picture URL.
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*
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* Depending on section, other parameters are required (see function code
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* for details)
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*
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* @param array
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* @return string
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*/
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function make_section_in_url($params)
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{
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global $conf;
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$section_string = '';
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$section_of = array(
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'category' => 'categories',
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'tags' => 'tags',
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'list' => 'list',
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'search' => 'search',
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);
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foreach ($section_of as $param => $section)
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{
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if (isset($params[$param]))
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{
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$params['section'] = $section;
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}
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}
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if (!isset($params['section']))
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{
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$params['section'] = 'none';
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}
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switch($params['section'])
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{
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case 'categories' :
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{
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if (!isset($params['category']))
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{
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$section_string.= '/categories';
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}
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else
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{
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is_array($params['category']) or trigger_error(
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'make_section_in_url wrong type for category', E_USER_WARNING
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);
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is_numeric($params['category']['id']) or trigger_error(
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'make_section_in_url category id not numeric', E_USER_WARNING
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);
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isset($params['category']['name']) or trigger_error(
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'make_section_in_url category name not set', E_USER_WARNING
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);
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array_key_exists('permalink', $params['category']) or trigger_error(
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'make_section_in_url category permalink not set', E_USER_WARNING
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);
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$section_string.= '/category/';
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if ( empty($params['category']['permalink']) )
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{
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$section_string.= $params['category']['id'];
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if ( $conf['category_url_style']=='id-name' )
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{
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$section_string.= '-'.str2url($params['category']['name']);
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}
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}
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else
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{
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$section_string.= $params['category']['permalink'];
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}
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}
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break;
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}
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case 'tags' :
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{
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if (!isset($params['tags']) or count($params['tags']) == 0)
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{
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fatal_error('make_section_in_url: require at least one tag');
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}
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$section_string.= '/tags';
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foreach ($params['tags'] as $tag)
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{
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switch ( $conf['tag_url_style'] )
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{
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case 'id':
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$section_string.= '/'.$tag['id'];
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break;
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case 'tag':
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if (isset($tag['url_name']) and !is_numeric($tag['url_name']) )
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{
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$section_string.= '/'.$tag['url_name'];
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break;
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}
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default:
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$section_string.= '/'.$tag['id'];
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if (isset($tag['url_name']))
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{
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$section_string.= '-'.$tag['url_name'];
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}
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}
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}
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break;
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}
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case 'search' :
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{
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isset($params['search']) or fatal_error('make_section_in_url: require a search identifier');
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$section_string.= '/search/'.$params['search'];
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break;
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}
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case 'list' :
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{
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isset($params['list']) or fatal_error('make_section_in_url: require a list of items');
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$section_string.= '/list/'.implode(',', $params['list']);
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break;
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}
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case 'none' :
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{
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break;
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}
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default :
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{
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$section_string.= '/'.$params['section'];
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}
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}
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return $section_string;
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}
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/**
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* the reverse of make_section_in_url
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* returns the 'section' (categories/tags/...) and the data associated with it
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*
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* Depending on section, other parameters are returned (category/tags/list/...)
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*
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* @param array of url tokens to parse
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* @param int the index in the array of url tokens; in/out
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* @return array
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*/
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function parse_section_url( $tokens, &$next_token)
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{
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$page=array();
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if (0 === strpos(@$tokens[$next_token], 'categor'))
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{
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$page['section'] = 'categories';
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$next_token++;
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if (isset($tokens[$next_token]) )
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{
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if (preg_match('/^(\d+)(?:-(.+))?$/', $tokens[$next_token], $matches))
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{
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if ( isset($matches[2]) )
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$page['hit_by']['cat_url_name'] = $matches[2];
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$page['category'] = $matches[1];
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$next_token++;
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}
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else
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{// try a permalink
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$maybe_permalinks = array();
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$current_token = $next_token;
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while ( isset($tokens[$current_token])
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and strpos($tokens[$current_token], 'created-')!==0
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and strpos($tokens[$current_token], 'posted-')!==0
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and strpos($tokens[$next_token], 'start-')!==0
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and $tokens[$current_token] != 'flat')
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{
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if (empty($maybe_permalinks))
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{
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array_push($maybe_permalinks, $tokens[$current_token]);
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}
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else
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{
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array_push($maybe_permalinks,
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$maybe_permalinks[count($maybe_permalinks)-1]
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. '/' . $tokens[$current_token]
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);
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}
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$current_token++;
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}
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if ( count($maybe_permalinks) )
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{
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$cat_id = get_cat_id_from_permalinks($maybe_permalinks, $perma_index);
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if ( isset($cat_id) )
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{
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$next_token += $perma_index+1;
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$page['category'] = $cat_id;
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$page['hit_by']['cat_permalink'] = $maybe_permalinks[$perma_index];
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}
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else
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{
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page_not_found('Permalink for album not found');
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}
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}
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}
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}
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if (isset($page['category']))
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{
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$result = get_cat_info($page['category']);
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if (empty($result))
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{
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page_not_found('Requested category does not exist' );
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}
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$page['category']=$result;
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}
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}
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else if (0 === strpos(@$tokens[$next_token], 'tag'))
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{
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$page['section'] = 'tags';
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$page['tags'] = array();
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$next_token++;
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$i = $next_token;
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$requested_tag_ids = array();
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$requested_tag_url_names = array();
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while (isset($tokens[$i]))
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{
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if ( preg_match('/^(created-|posted-|start-(\d)+)/', $tokens[$i]) )
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break;
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if ( preg_match('/^(\d+)(?:-(.*))?/', $tokens[$i], $matches) )
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{
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array_push($requested_tag_ids, $matches[1]);
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}
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else
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{
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array_push($requested_tag_url_names, $tokens[$i]);
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}
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$i++;
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}
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$next_token = $i;
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if ( empty($requested_tag_ids) && empty($requested_tag_url_names) )
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{
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bad_request('at least one tag required');
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}
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$page['tags'] = find_tags($requested_tag_ids, $requested_tag_url_names);
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if ( empty($page['tags']) )
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{
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page_not_found('Requested tag does not exist', get_root_url().'tags.php' );
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}
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}
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else if (0 === strpos(@$tokens[$next_token], 'fav'))
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{
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$page['section'] = 'favorites';
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$next_token++;
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}
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else if ('most_visited' == @$tokens[$next_token])
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{
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$page['section'] = 'most_visited';
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$next_token++;
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}
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else if ('best_rated' == @$tokens[$next_token])
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{
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$page['section'] = 'best_rated';
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$next_token++;
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}
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else if ('recent_pics' == @$tokens[$next_token])
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{
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$page['section'] = 'recent_pics';
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$next_token++;
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}
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else if ('recent_cats' == @$tokens[$next_token])
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{
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$page['section'] = 'recent_cats';
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$next_token++;
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}
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else if ('search' == @$tokens[$next_token])
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{
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$page['section'] = 'search';
|
|
$next_token++;
|
|
|
|
preg_match('/(\d+)/', @$tokens[$next_token], $matches);
|
|
if (!isset($matches[1]))
|
|
{
|
|
bad_request('search identifier is missing');
|
|
}
|
|
$page['search'] = $matches[1];
|
|
$next_token++;
|
|
}
|
|
else if ('list' == @$tokens[$next_token])
|
|
{
|
|
$page['section'] = 'list';
|
|
$next_token++;
|
|
|
|
$page['list'] = array();
|
|
|
|
// No pictures
|
|
if (empty($tokens[$next_token]))
|
|
{
|
|
// Add dummy element list
|
|
array_push($page['list'], -1);
|
|
}
|
|
// With pictures list
|
|
else
|
|
{
|
|
if (!preg_match('/^\d+(,\d+)*$/', $tokens[$next_token]))
|
|
{
|
|
bad_request('wrong format on list GET parameter');
|
|
}
|
|
foreach (explode(',', $tokens[$next_token]) as $image_id)
|
|
{
|
|
array_push($page['list'], $image_id);
|
|
}
|
|
}
|
|
$next_token++;
|
|
}
|
|
return $page;
|
|
}
|
|
|
|
/**
|
|
* the reverse of add_well_known_params_in_url
|
|
* parses start, flat and chronology from url tokens
|
|
*/
|
|
function parse_well_known_params_url($tokens, &$i)
|
|
{
|
|
$page = array();
|
|
while (isset($tokens[$i]))
|
|
{
|
|
if (preg_match('/^start-(\d+)/', $tokens[$i], $matches))
|
|
{
|
|
$page['start'] = $matches[1];
|
|
}
|
|
|
|
if ( 'flat' == $tokens[$i] )
|
|
{
|
|
// indicate a special list of images
|
|
$page['flat'] = true;
|
|
}
|
|
|
|
if (preg_match('/^(posted|created)/', $tokens[$i] ))
|
|
{
|
|
$chronology_tokens = explode('-', $tokens[$i] );
|
|
|
|
$page['chronology_field'] = $chronology_tokens[0];
|
|
|
|
array_shift($chronology_tokens);
|
|
$page['chronology_style'] = $chronology_tokens[0];
|
|
|
|
array_shift($chronology_tokens);
|
|
if ( count($chronology_tokens)>0 )
|
|
{
|
|
if ('list'==$chronology_tokens[0] or
|
|
'calendar'==$chronology_tokens[0])
|
|
{
|
|
$page['chronology_view'] = $chronology_tokens[0];
|
|
array_shift($chronology_tokens);
|
|
}
|
|
$page['chronology_date'] = $chronology_tokens;
|
|
}
|
|
}
|
|
$i++;
|
|
}
|
|
return $page;
|
|
}
|
|
|
|
/**
|
|
* Indicate to build url with full path
|
|
*
|
|
* @param null
|
|
* @return null
|
|
*/
|
|
function set_make_full_url()
|
|
{
|
|
global $page;
|
|
|
|
if (!isset($page['save_root_path']))
|
|
{
|
|
if (isset($page['root_path']))
|
|
{
|
|
$page['save_root_path']['path'] = $page['root_path'];
|
|
}
|
|
$page['save_root_path']['count'] = 1;
|
|
$page['root_path'] = get_absolute_root_url();
|
|
}
|
|
else
|
|
{
|
|
$page['save_root_path']['count'] += 1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Restore old parameter to build url with full path
|
|
*
|
|
* @param null
|
|
* @return null
|
|
*/
|
|
function unset_make_full_url()
|
|
{
|
|
global $page;
|
|
|
|
if (isset($page['save_root_path']))
|
|
{
|
|
if ($page['save_root_path']['count'] == 1)
|
|
{
|
|
if (isset($page['save_root_path']['path']))
|
|
{
|
|
$page['root_path'] = $page['save_root_path']['path'];
|
|
}
|
|
else
|
|
{
|
|
unset($page['root_path']);
|
|
}
|
|
unset($page['save_root_path']);
|
|
}
|
|
else
|
|
{
|
|
$page['save_root_path']['count'] -= 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Embellish the url argument
|
|
*
|
|
* @param $url
|
|
* @return $url embellished
|
|
*/
|
|
function embellish_url($url)
|
|
{
|
|
return str_replace('/./', '/', $url);
|
|
}
|
|
|
|
?>
|