394 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			394 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * Name: Image List
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 * Author: Shish <webmaster@shishnet.org>
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 * Link: http://code.shishnet.org/shimmie2/
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 * License: GPLv2
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 * Description: Show a list of uploaded images
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 * Documentation:
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 *  Here is a list of the search methods available out of the box;
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 *  Shimmie extensions may provide other filters:
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 *  <ul>
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 *    <li>by tag, eg
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 *      <ul>
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 *        <li>cat
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 *        <li>pie
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 *        <li>somethi* -- wildcards are supported
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 *      </ul>
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 *    <li>size (=, <, >, <=, >=) width x height, eg
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 *      <ul>
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 *        <li>size=1024x768 -- a specific wallpaper size
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 *        <li>size>=500x500 -- no small images
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 *        <li>size<1000x1000 -- no large images
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 *      </ul>
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 *    <li>width (=, <, >, <=, >=) width, eg
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 *      <ul>
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 *        <li>width=1024 -- find images with 1024 width
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 *        <li>width>2000 -- find images bigger than 2000 width
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 *      </ul>
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 *    <li>height (=, <, >, <=, >=) height, eg
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 *      <ul>
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 *        <li>height=768 -- find images with 768 height
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 *        <li>height>1000 -- find images bigger than 1000 height
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 *      </ul>
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 *    <li>ratio (=, <, >, <=, >=) width : height, eg
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 *      <ul>
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 *        <li>ratio=4:3, ratio=16:9 -- standard wallpaper
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 *        <li>ratio=1:1 -- square images
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 *        <li>ratio<1:1 -- tall images
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 *        <li>ratio>1:1 -- wide images
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 *      </ul>
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 *    <li>filesize (=, <, >, <=, >=) size, eg
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 *      <ul>
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 *        <li>filesize>1024 -- no images under 1KB
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 *        <li>filesize<=3MB -- shorthand filesizes are supported too
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 *      </ul>
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 *    <li>id (=, <, >, <=, >=) number, eg
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 *      <ul>
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 *        <li>id<20 -- search only the first few images
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 *        <li>id>=500 -- search later images
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 *      </ul>
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 *    <li>user=Username & poster=Username, eg
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 *      <ul>
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 *        <li>user=Shish -- find all of Shish's posts
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 *        <li>poster=Shish -- same as above
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 *      </ul>
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 *    <li>user_id=userID & poster_id=userID, eg
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 *      <ul>
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 *        <li>user_id=2 -- find all posts by user id 2
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 *        <li>poster_id=2 -- same as above
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 *      </ul>
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 *    <li>hash=md5sum & md5=md5sum, eg
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 *      <ul>
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 *        <li>hash=bf5b59173f16b6937a4021713dbfaa72 -- find the "Taiga want up!" image
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 *        <li>md5=bf5b59173f16b6937a4021713dbfaa72 -- same as above
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 *      </ul>
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 *    <li>filetype=type & ext=type, eg
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 *      <ul>
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 *        <li>filetype=png -- find all PNG images
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 *        <li>ext=png -- same as above
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 *      </ul>
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 *    <li>filename=blah & name=blah, eg
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 *      <ul>
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 *        <li>filename=kitten -- find all images with "kitten" in the original filename
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 *        <li>name=kitten -- same as above
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 *      </ul>
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 *    <li>posted (=, <, >, <=, >=) date, eg
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 *      <ul>
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 *        <li>posted>=2009-12-25 posted<=2010-01-01 -- find images posted between christmas and new year
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 *      </ul>
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 *    <li>tags (=, <, >, <=, >=) count, eg
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 *      <ul>
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 *        <li>tags=1 -- search for images with only 1 tag
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 *        <li>tags>=10 -- search for images with 10 or more tags
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 *        <li>tags<25 -- search for images with less than 25 tags
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 *      </ul>
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 *    <li>source=(URL, any, none) eg
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 *      <ul>
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 *        <li>source=http://example.com -- find all images with "http://example.com" in the source
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 *        <li>source=any -- find all images with a source
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 *        <li>source=none -- find all images without a source
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 *      </ul>
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 *    <li>order=(id, width, height, filesize, filename)_(ASC, DESC), eg
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 *      <ul>
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 *        <li>order=width -- find all images sorted from highest > lowest width
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 *        <li>order=filesize_asc -- find all images sorted from lowest > highest filesize
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 *      </ul>
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 *    <li>order=random_####, eg
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 *      <ul>
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 *        <li>order=random_8547 -- find all images sorted randomly using 8547 as a seed
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 *      </ul>
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 *  </ul>
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 *  <p>Search items can be combined to search for images which match both,
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 *  or you can stick "-" in front of an item to search for things that don't
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 *  match it.
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 *  <p>Metatags can be followed by ":" rather than "=" if you prefer.
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 *  <br />I.E: "posted:2014-01-01", "id:>=500" etc.
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 *  <p>Some search methods provided by extensions:
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 *  <ul>
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 *    <li>Numeric Score
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 *      <ul>
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 *        <li>score (=, <, >, <=, >=) number -- seach by score
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 *        <li>upvoted_by=Username -- search for a user's likes
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 *        <li>downvoted_by=Username -- search for a user's dislikes
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 *        <li>upvoted_by_id=UserID -- search for a user's likes by user ID
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 *        <li>downvoted_by_id=UserID -- search for a user's dislikes by user ID
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 *        <li>order=score_(ASC, DESC) -- find all images sorted from by score
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 *      </ul>
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 *    <li>Image Rating
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 *      <ul>
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 *        <li>rating=se -- find safe and explicit images, ignore questionable and unknown
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 *      </ul>
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 *    <li>Favorites
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 *      <ul>
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 *        <li>favorites (=, <, >, <=, >=) number -- search for images favourited a certain number of times
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 *        <li>favourited_by=Username -- search for a user's choices by username
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 *        <li>favorited_by_userno=UserID -- search for a user's choice by userID
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 *      </ul>
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 *    <li>Notes
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 *      <ul>
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 *        <li>notes (=, <, >, <=, >=) number -- search by the number of notes an image has
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 *        <li>notes_by=Username -- search for images containing notes created by username
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 *        <li>notes_by_userno=UserID -- search for images containing notes created by userID
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 *      </ul>
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 *    <li>Artists
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 *      <ul>
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 *        <li>author=ArtistName -- search for images by artist
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 *      </ul>
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 *    <li>Image Comments
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 *      <ul>
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 *        <li>comments (=, <, >, <=, >=) number -- search for images by number of comments
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 *        <li>commented_by=Username -- search for images containing user's comments by username
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 *        <li>commented_by_userno=UserID -- search for images containing user's comments by userID
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 *      </ul>
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 *    <li>Pools
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 *      <ul>
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 *        <li>pool=(PoolID, any, none) -- search for images in a pool by PoolID.
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 *        <li>pool_by_name=PoolName -- search for images in a pool by PoolName. underscores are replaced with spaces
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 *      </ul>
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 *    <li>Post Relationships
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 *      <ul>
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 *        <li>parent=(parentID, any, none) -- search for images by parentID / if they have, do not have a parent
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 *        <li>child=(any, none) -- search for images which have, or do not have children
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 *      </ul>
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 *  </ul>
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 */
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/*
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 * SearchTermParseEvent:
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 * Signal that a search term needs parsing
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 */
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class SearchTermParseEvent extends Event
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{
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    /** @var null|string  */
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    public $term = null;
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    /** @var string[] */
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    public $context = [];
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    /** @var Querylet[] */
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    public $querylets = [];
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    public function __construct(string $term=null, array $context=[])
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    {
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        $this->term = $term;
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        $this->context = $context;
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    }
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    public function is_querylet_set(): bool
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    {
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        return (count($this->querylets) > 0);
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    }
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    public function get_querylets(): array
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    {
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        return $this->querylets;
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    }
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    public function add_querylet(Querylet $q)
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    {
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        $this->querylets[] = $q;
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    }
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}
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class SearchTermParseException extends SCoreException
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{
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}
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class PostListBuildingEvent extends Event
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{
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    /** @var array */
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    public $search_terms = [];
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    /** @var array */
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    public $parts = [];
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    /**
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     * #param string[] $search
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     */
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    public function __construct(array $search)
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    {
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        $this->search_terms = $search;
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    }
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    public function add_control(string $html, int $position=50)
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    {
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        while (isset($this->parts[$position])) {
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            $position++;
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        }
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        $this->parts[$position] = $html;
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    }
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}
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class Index extends Extension
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{
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    /** @var int */
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    private $stpen = 0;  // search term parse event number
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    public function onInitExt(InitExtEvent $event)
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    {
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        global $config;
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        $config->set_default_int("index_images", 24);
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        $config->set_default_bool("index_tips", true);
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        $config->set_default_string("index_order", "id DESC");
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    }
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    public function onPageRequest(PageRequestEvent $event)
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    {
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        global $database, $page;
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        if ($event->page_matches("post/list")) {
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            if (isset($_GET['search'])) {
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                // implode(explode()) to resolve aliases and sanitise
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                $search = url_escape(Tag::implode(Tag::explode($_GET['search'], false)));
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                if (empty($search)) {
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                    $page->set_mode(PageMode::REDIRECT);
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                    $page->set_redirect(make_link("post/list/1"));
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                } else {
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                    $page->set_mode(PageMode::REDIRECT);
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                    $page->set_redirect(make_link('post/list/'.$search.'/1'));
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                }
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                return;
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            }
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            $search_terms = $event->get_search_terms();
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            $page_number = $event->get_page_number();
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            $page_size = $event->get_page_size();
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            $count_search_terms = count($search_terms);
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            try {
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                #log_debug("index", "Search for ".Tag::implode($search_terms), false, array("terms"=>$search_terms));
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                $total_pages = Image::count_pages($search_terms);
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                if (SPEED_HAX && $count_search_terms === 0 && ($page_number < 10)) { // extra caching for the first few post/list pages
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                    $images = $database->cache->get("post-list:$page_number");
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                    if (!$images) {
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                        $images = Image::find_images(($page_number-1)*$page_size, $page_size, $search_terms);
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                        $database->cache->set("post-list:$page_number", $images, 60);
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                    }
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                } else {
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                    $images = Image::find_images(($page_number-1)*$page_size, $page_size, $search_terms);
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                }
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            } catch (SearchTermParseException $stpe) {
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                // FIXME: display the error somewhere
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                $total_pages = 0;
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                $images = [];
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            }
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            $count_images = count($images);
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            if ($count_search_terms === 0 && $count_images === 0 && $page_number === 1) {
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                $this->theme->display_intro($page);
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                send_event(new PostListBuildingEvent($search_terms));
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            } elseif ($count_search_terms > 0 && $count_images === 1 && $page_number === 1) {
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                $page->set_mode(PageMode::REDIRECT);
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                $page->set_redirect(make_link('post/view/'.$images[0]->id));
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            } else {
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                $plbe = new PostListBuildingEvent($search_terms);
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                send_event($plbe);
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                $this->theme->set_page($page_number, $total_pages, $search_terms);
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                $this->theme->display_page($page, $images);
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                if (count($plbe->parts) > 0) {
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                    $this->theme->display_admin_block($plbe->parts);
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                }
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            }
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        }
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    }
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    public function onSetupBuilding(SetupBuildingEvent $event)
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    {
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        $sb = new SetupBlock("Index Options");
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        $sb->position = 20;
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        $sb->add_label("Show ");
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        $sb->add_int_option("index_images");
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        $sb->add_label(" images on the post list");
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        $event->panel->add_block($sb);
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    }
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    public function onImageInfoSet(ImageInfoSetEvent $event)
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    {
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        global $database;
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        if (SPEED_HAX) {
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            $database->cache->delete("thumb-block:{$event->image->id}");
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        }
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    }
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    public function onSearchTermParse(SearchTermParseEvent $event)
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    {
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        $matches = [];
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        // check for tags first as tag based searches are more common.
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        if (preg_match("/^tags([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+)$/i", $event->term, $matches)) {
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            $cmp = ltrim($matches[1], ":") ?: "=";
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            $count = $matches[2];
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            $event->add_querylet(
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                new Querylet("EXISTS (
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				              SELECT 1
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				              FROM image_tags it
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				              LEFT JOIN tags t ON it.tag_id = t.id
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				              WHERE images.id = it.image_id
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				              GROUP BY image_id
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				              HAVING COUNT(*) $cmp $count
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				)")
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            );
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        } elseif (preg_match("/^ratio([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+):(\d+)$/i", $event->term, $matches)) {
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            $cmp = preg_replace('/^:/', '=', $matches[1]);
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            $args = ["width{$this->stpen}"=>int_escape($matches[2]), "height{$this->stpen}"=>int_escape($matches[3])];
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            $event->add_querylet(new Querylet("width / height $cmp :width{$this->stpen} / :height{$this->stpen}", $args));
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        } elseif (preg_match("/^(filesize|id)([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+[kmg]?b?)$/i", $event->term, $matches)) {
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            $col = $matches[1];
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            $cmp = ltrim($matches[2], ":") ?: "=";
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            $val = parse_shorthand_int($matches[3]);
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            $event->add_querylet(new Querylet("images.$col $cmp :val{$this->stpen}", ["val{$this->stpen}"=>$val]));
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        } elseif (preg_match("/^(hash|md5)[=|:]([0-9a-fA-F]*)$/i", $event->term, $matches)) {
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            $hash = strtolower($matches[2]);
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            $event->add_querylet(new Querylet('images.hash = :hash', ["hash" => $hash]));
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        } elseif (preg_match("/^(phash)[=|:]([0-9a-fA-F]*)$/i", $event->term, $matches)) {
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            $phash = strtolower($matches[2]);
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            $event->add_querylet(new Querylet('images.phash = :phash', ["phash" => $phash]));
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        } elseif (preg_match("/^(filetype|ext)[=|:]([a-zA-Z0-9]*)$/i", $event->term, $matches)) {
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            $ext = strtolower($matches[2]);
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            $event->add_querylet(new Querylet('images.ext = :ext', ["ext" => $ext]));
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        } elseif (preg_match("/^(filename|name)[=|:]([a-zA-Z0-9]*)$/i", $event->term, $matches)) {
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            $filename = strtolower($matches[2]);
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            $event->add_querylet(new Querylet("images.filename LIKE :filename{$this->stpen}", ["filename{$this->stpen}"=>"%$filename%"]));
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        } elseif (preg_match("/^(source)[=|:](.*)$/i", $event->term, $matches)) {
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            $source = strtolower($matches[2]);
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            if (preg_match("/^(any|none)$/i", $source)) {
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                $not = ($source == "any" ? "NOT" : "");
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                $event->add_querylet(new Querylet("images.source IS $not NULL"));
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            } else {
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                $event->add_querylet(new Querylet('images.source LIKE :src', ["src"=>"%$source%"]));
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            }
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        } elseif (preg_match("/^posted([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])([0-9-]*)$/i", $event->term, $matches)) {
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            $cmp = ltrim($matches[1], ":") ?: "=";
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            $val = $matches[2];
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            $event->add_querylet(new Querylet("images.posted $cmp :posted{$this->stpen}", ["posted{$this->stpen}"=>$val]));
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        } elseif (preg_match("/^size([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+)x(\d+)$/i", $event->term, $matches)) {
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            $cmp = ltrim($matches[1], ":") ?: "=";
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            $args = ["width{$this->stpen}"=>int_escape($matches[2]), "height{$this->stpen}"=>int_escape($matches[3])];
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            $event->add_querylet(new Querylet("width $cmp :width{$this->stpen} AND height $cmp :height{$this->stpen}", $args));
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        } elseif (preg_match("/^width([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+)$/i", $event->term, $matches)) {
 | 
						|
            $cmp = ltrim($matches[1], ":") ?: "=";
 | 
						|
            $event->add_querylet(new Querylet("width $cmp :width{$this->stpen}", ["width{$this->stpen}"=>int_escape($matches[2])]));
 | 
						|
        } elseif (preg_match("/^height([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+)$/i", $event->term, $matches)) {
 | 
						|
            $cmp = ltrim($matches[1], ":") ?: "=";
 | 
						|
            $event->add_querylet(new Querylet("height $cmp :height{$this->stpen}", ["height{$this->stpen}"=>int_escape($matches[2])]));
 | 
						|
        } elseif (preg_match("/^order[=|:](id|width|height|filesize|filename)[_]?(desc|asc)?$/i", $event->term, $matches)) {
 | 
						|
            $ord = strtolower($matches[1]);
 | 
						|
            $default_order_for_column = preg_match("/^(id|filename)$/", $matches[1]) ? "ASC" : "DESC";
 | 
						|
            $sort = isset($matches[2]) ? strtoupper($matches[2]) : $default_order_for_column;
 | 
						|
            Image::$order_sql = "images.$ord $sort";
 | 
						|
            $event->add_querylet(new Querylet("1=1")); //small hack to avoid metatag being treated as normal tag
 | 
						|
        } elseif (preg_match("/^order[=|:]random[_]([0-9]{1,4})$/i", $event->term, $matches)) {
 | 
						|
            //order[=|:]random requires a seed to avoid duplicates
 | 
						|
            //since the tag can't be changed during the parseevent, we instead generate the seed during submit using js
 | 
						|
            $seed = $matches[1];
 | 
						|
            Image::$order_sql = "RAND($seed)";
 | 
						|
            $event->add_querylet(new Querylet("1=1")); //small hack to avoid metatag being treated as normal tag
 | 
						|
        }
 | 
						|
 | 
						|
        $this->stpen++;
 | 
						|
    }
 | 
						|
}
 |