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-rw-r--r--vendors/dokuwiki/inc/search.php630
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+<?php
+/**
+ * DokuWiki search functions
+ *
+ * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+
+if(!defined('DOKU_INC')) die('meh.');
+require_once(DOKU_INC.'inc/common.php');
+
+/**
+ * recurse direcory
+ *
+ * This function recurses into a given base directory
+ * and calls the supplied function for each file and directory
+ *
+ * @param array ref $data The results of the search are stored here
+ * @param string $base Where to start the search
+ * @param callback $func Callback (function name or arayy with object,method)
+ * @param string $dir Current directory beyond $base
+ * @param int $lvl Recursion Level
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search(&$data,$base,$func,$opts,$dir='',$lvl=1){
+ $dirs = array();
+ $files = array();
+
+ //read in directories and files
+ $dh = @opendir($base.'/'.$dir);
+ if(!$dh) return;
+ while(($file = readdir($dh)) !== false){
+ if(preg_match('/^[\._]/',$file)) continue; //skip hidden files and upper dirs
+ if(is_dir($base.'/'.$dir.'/'.$file)){
+ $dirs[] = $dir.'/'.$file;
+ continue;
+ }
+ $files[] = $dir.'/'.$file;
+ }
+ closedir($dh);
+ sort($files);
+ sort($dirs);
+
+ //give directories to userfunction then recurse
+ foreach($dirs as $dir){
+ if (call_user_func_array($func, array(&$data,$base,$dir,'d',$lvl,$opts))){
+ search($data,$base,$func,$opts,$dir,$lvl+1);
+ }
+ }
+ //now handle the files
+ foreach($files as $file){
+ call_user_func_array($func, array(&$data,$base,$file,'f',$lvl,$opts));
+ }
+}
+
+/**
+ * Wrapper around call_user_func_array.
+ *
+ * @deprecated
+ */
+function search_callback($func,&$data,$base,$file,$type,$lvl,$opts){
+ return call_user_func_array($func, array(&$data,$base,$file,$type,$lvl,$opts));
+}
+
+/**
+ * The following functions are userfunctions to use with the search
+ * function above. This function is called for every found file or
+ * directory. When a directory is given to the function it has to
+ * decide if this directory should be traversed (true) or not (false)
+ * The function has to accept the following parameters:
+ *
+ * &$data - Reference to the result data structure
+ * $base - Base usually $conf['datadir']
+ * $file - current file or directory relative to $base
+ * $type - Type either 'd' for directory or 'f' for file
+ * $lvl - Current recursion depht
+ * $opts - option array as given to search()
+ *
+ * return values for files are ignored
+ *
+ * All functions should check the ACL for document READ rights
+ * namespaces (directories) are NOT checked as this would break
+ * the recursion (You can have an nonreadable dir over a readable
+ * one deeper nested) also make sure to check the file type (for example
+ * in case of lockfiles).
+ */
+
+/**
+ * Searches for pages beginning with the given query
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_qsearch(&$data,$base,$file,$type,$lvl,$opts){
+ $opts = array(
+ 'idmatch' => '(^|:)'.preg_quote($opts['query'],'/').'/',
+ 'listfiles' => true,
+ 'pagesonly' => true,
+ );
+ return search_universal($data,$base,$file,$type,$lvl,$opts);
+}
+
+/**
+ * Build the browsable index of pages
+ *
+ * $opts['ns'] is the current namespace
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_index(&$data,$base,$file,$type,$lvl,$opts){
+ global $conf;
+ $return = true;
+
+ $item = array();
+
+ if($type == 'd' && !preg_match('#^'.$file.'(/|$)#','/'.$opts['ns'])){
+ //add but don't recurse
+ $return = false;
+ }elseif($type == 'f' && ($opts['nofiles'] || substr($file,-4) != '.txt')){
+ //don't add
+ return false;
+ }
+
+ $id = pathID($file);
+
+ if($type=='d' && $conf['sneaky_index'] && auth_quickaclcheck($id.':') < AUTH_READ){
+ return false;
+ }
+
+ //check hidden
+ if(isHiddenPage($id)){
+ return false;
+ }
+
+ //check ACL
+ if($type=='f' && auth_quickaclcheck($id) < AUTH_READ){
+ return false;
+ }
+
+ $data[]=array( 'id' => $id,
+ 'type' => $type,
+ 'level' => $lvl,
+ 'open' => $return );
+ return $return;
+}
+
+/**
+ * List all namespaces
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_namespaces(&$data,$base,$file,$type,$lvl,$opts){
+ $opts = array(
+ 'listdirs' => true,
+ );
+ return search_universal($data,$base,$file,$type,$lvl,$opts);
+}
+
+/**
+ * List all mediafiles in a namespace
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_media(&$data,$base,$file,$type,$lvl,$opts){
+
+ //we do nothing with directories
+ if($type == 'd') {
+ if(!$opts['depth']) return true; // recurse forever
+ $depth = substr_count($file,'/');
+ if($depth >= $opts['depth']) return false; // depth reached
+ return true;
+ }
+
+ $info = array();
+ $info['id'] = pathID($file,true);
+ if($info['id'] != cleanID($info['id'])){
+ if($opts['showmsg'])
+ msg(hsc($info['id']).' is not a valid file name for DokuWiki - skipped',-1);
+ return false; // skip non-valid files
+ }
+
+ //check ACL for namespace (we have no ACL for mediafiles)
+ $info['perm'] = auth_quickaclcheck(getNS($info['id']).':*');
+ if(!$opts['skipacl'] && $info['perm'] < AUTH_READ){
+ return false;
+ }
+
+ //check pattern filter
+ if($opts['pattern'] && !@preg_match($opts['pattern'], $info['id'])){
+ return false;
+ }
+
+ $info['file'] = basename($file);
+ $info['size'] = filesize($base.'/'.$file);
+ $info['mtime'] = filemtime($base.'/'.$file);
+ $info['writable'] = is_writable($base.'/'.$file);
+ if(preg_match("/\.(jpe?g|gif|png)$/",$file)){
+ $info['isimg'] = true;
+ require_once(DOKU_INC.'inc/JpegMeta.php');
+ $info['meta'] = new JpegMeta($base.'/'.$file);
+ }else{
+ $info['isimg'] = false;
+ }
+ if($opts['hash']){
+ $info['hash'] = md5(io_readFile(wikiFN($info['id']),false));
+ }
+
+ $data[] = $info;
+
+ return false;
+}
+
+/**
+ * This function just lists documents (for RSS namespace export)
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_list(&$data,$base,$file,$type,$lvl,$opts){
+ //we do nothing with directories
+ if($type == 'd') return false;
+ //only search txt files
+ if(substr($file,-4) == '.txt'){
+ //check ACL
+ $id = pathID($file);
+ if(auth_quickaclcheck($id) < AUTH_READ){
+ return false;
+ }
+ $data[]['id'] = $id;
+ }
+ return false;
+}
+
+/**
+ * Quicksearch for searching matching pagenames
+ *
+ * $opts['query'] is the search query
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_pagename(&$data,$base,$file,$type,$lvl,$opts){
+ //we do nothing with directories
+ if($type == 'd') return true;
+ //only search txt files
+ if(substr($file,-4) != '.txt') return true;
+
+ //simple stringmatching
+ if (!empty($opts['query'])){
+ if(strpos($file,$opts['query']) !== false){
+ //check ACL
+ $id = pathID($file);
+ if(auth_quickaclcheck($id) < AUTH_READ){
+ return false;
+ }
+ $data[]['id'] = $id;
+ }
+ }
+ return true;
+}
+
+/**
+ * Just lists all documents
+ *
+ * $opts['depth'] recursion level, 0 for all
+ * $opts['hash'] do md5 sum of content?
+ * $opts['skipacl'] list everything regardless of ACL
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function search_allpages(&$data,$base,$file,$type,$lvl,$opts){
+ //we do nothing with directories
+ if($type == 'd'){
+ if(!$opts['depth']) return true; // recurse forever
+ $parts = explode('/',ltrim($file,'/'));
+ if(count($parts) == $opts['depth']) return false; // depth reached
+ return true;
+ }
+
+ //only search txt files
+ if(substr($file,-4) != '.txt') return true;
+
+ $item['id'] = pathID($file);
+ if(!$opts['skipacl'] && auth_quickaclcheck($item['id']) < AUTH_READ){
+ return false;
+ }
+
+ $item['rev'] = filemtime($base.'/'.$file);
+ $item['mtime'] = $item['rev'];
+ $item['size'] = filesize($base.'/'.$file);
+ if($opts['hash']){
+ $item['hash'] = md5(trim(rawWiki($item['id'])));
+ }
+
+ $data[] = $item;
+ return true;
+}
+
+/**
+ * Search for backlinks to a given page
+ *
+ * $opts['ns'] namespace of the page
+ * $opts['name'] name of the page without namespace
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ * @deprecated Replaced by ft_backlinks()
+ */
+function search_backlinks(&$data,$base,$file,$type,$lvl,$opts){
+ //we do nothing with directories
+ if($type == 'd') return true;
+ //only search txt files
+ if(substr($file,-4) != '.txt') return true;
+
+ //absolute search id
+ $sid = cleanID($opts['ns'].':'.$opts['name']);
+
+ //current id and namespace
+ $cid = pathID($file);
+ $cns = getNS($cid);
+
+ //check ACL
+ if(auth_quickaclcheck($cid) < AUTH_READ){
+ return false;
+ }
+
+ //fetch instructions
+ require_once(DOKU_INC.'inc/parserutils.php');
+ $instructions = p_cached_instructions($base.$file,true);
+ if(is_null($instructions)) return false;
+
+ //check all links for match
+ foreach($instructions as $ins){
+ if($ins[0] == 'internallink' || ($conf['camelcase'] && $ins[0] == 'camelcaselink') ){
+ $mid = $ins[1][0];
+ resolve_pageid($cns,$mid,$exists); //exists is not used
+ if($mid == $sid){
+ //we have a match - finish
+ $data[]['id'] = $cid;
+ break;
+ }
+ }
+ }
+
+ return false;
+}
+
+/**
+ * Fulltextsearch
+ *
+ * $opts['query'] is the search query
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ * @deprecated - fulltext indexer is used instead
+ */
+function search_fulltext(&$data,$base,$file,$type,$lvl,$opts){
+ //we do nothing with directories
+ if($type == 'd') return true;
+ //only search txt files
+ if(substr($file,-4) != '.txt') return true;
+
+ //check ACL
+ $id = pathID($file);
+ if(auth_quickaclcheck($id) < AUTH_READ){
+ return false;
+ }
+
+ //create regexp from queries
+ $poswords = array();
+ $negwords = array();
+ $qpreg = preg_split('/\s+/',$opts['query']);
+
+ foreach($qpreg as $word){
+ switch(substr($word,0,1)){
+ case '-':
+ if(strlen($word) > 1){ // catch single '-'
+ array_push($negwords,preg_quote(substr($word,1),'#'));
+ }
+ break;
+ case '+':
+ if(strlen($word) > 1){ // catch single '+'
+ array_push($poswords,preg_quote(substr($word,1),'#'));
+ }
+ break;
+ default:
+ array_push($poswords,preg_quote($word,'#'));
+ break;
+ }
+ }
+
+ // a search without any posword is useless
+ if (!count($poswords)) return true;
+
+ $reg = '^(?=.*?'.join(')(?=.*?',$poswords).')';
+ $reg .= count($negwords) ? '((?!'.join('|',$negwords).').)*$' : '.*$';
+ search_regex($data,$base,$file,$reg,$poswords);
+ return true;
+ }
+
+ /**
+ * Reference search
+ * This fuction searches for existing references to a given media file
+ * and returns an array with the found pages. It doesn't pay any
+ * attention to ACL permissions to find every reference. The caller
+ * must check if the user has the appropriate rights to see the found
+ * page and eventually have to prevent the result from displaying.
+ *
+ * @param array $data Reference to the result data structure
+ * @param string $base Base usually $conf['datadir']
+ * @param string $file current file or directory relative to $base
+ * @param char $type Type either 'd' for directory or 'f' for file
+ * @param int $lvl Current recursion depht
+ * @param mixed $opts option array as given to search()
+ *
+ * $opts['query'] is the demanded media file name
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
+ */
+function search_reference(&$data,$base,$file,$type,$lvl,$opts){
+ global $conf;
+
+ //we do nothing with directories
+ if($type == 'd') return true;
+
+ //only search txt files
+ if(substr($file,-4) != '.txt') return true;
+
+ //we finish after 'cnt' references found. The return value
+ //'false' will skip subdirectories to speed search up.
+ $cnt = $conf['refshow'] > 0 ? $conf['refshow'] : 1;
+ if(count($data) >= $cnt) return false;
+
+ $reg = '\{\{ *\:?'.$opts['query'].' *(\|.*)?\}\}';
+ search_regex($data,$base,$file,$reg,array($opts['query']));
+ return true;
+}
+
+/* ------------- helper functions below -------------- */
+
+/**
+ * fulltext search helper
+ * searches a text file with a given regular expression
+ * no ACL checks are performed. This have to be done by
+ * the caller if necessary.
+ *
+ * @param array $data reference to array for results
+ * @param string $base base directory
+ * @param string $file file name to search in
+ * @param string $reg regular expression to search for
+ * @param array $words words that should be marked in the results
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
+ *
+ * @deprecated - fulltext indexer is used instead
+ */
+function search_regex(&$data,$base,$file,$reg,$words){
+
+ //get text
+ $text = io_readfile($base.'/'.$file);
+ //lowercase text (u modifier does not help with case)
+ $lctext = utf8_strtolower($text);
+
+ //do the fulltext search
+ $matches = array();
+ if($cnt = preg_match_all('#'.$reg.'#usi',$lctext,$matches)){
+ //this is not the best way for snippet generation but the fastest I could find
+ $q = $words[0]; //use first word for snippet creation
+ $p = utf8_strpos($lctext,$q);
+ $f = $p - 100;
+ $l = utf8_strlen($q) + 200;
+ if($f < 0) $f = 0;
+ $snippet = '<span class="search_sep"> ... </span>'.
+ htmlspecialchars(utf8_substr($text,$f,$l)).
+ '<span class="search_sep"> ... </span>';
+ $mark = '('.join('|', $words).')';
+ $snippet = preg_replace('#'.$mark.'#si','<strong class="search_hit">\\1</strong>',$snippet);
+
+ $data[] = array(
+ 'id' => pathID($file),
+ 'count' => preg_match_all('#'.$mark.'#usi',$lctext,$matches),
+ 'poswords' => join(' ',$words),
+ 'snippet' => $snippet,
+ );
+ }
+
+ return true;
+}
+
+
+/**
+ * fulltext sort
+ *
+ * Callback sort function for use with usort to sort the data
+ * structure created by search_fulltext. Sorts descending by count
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function sort_search_fulltext($a,$b){
+ if($a['count'] > $b['count']){
+ return -1;
+ }elseif($a['count'] < $b['count']){
+ return 1;
+ }else{
+ return strcmp($a['id'],$b['id']);
+ }
+}
+
+/**
+ * translates a document path to an ID
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ * @todo move to pageutils
+ */
+function pathID($path,$keeptxt=false){
+ $id = utf8_decodeFN($path);
+ $id = str_replace('/',':',$id);
+ if(!$keeptxt) $id = preg_replace('#\.txt$#','',$id);
+ $id = preg_replace('#^:+#','',$id);
+ $id = preg_replace('#:+$#','',$id);
+ return $id;
+}
+
+
+/**
+ * This is a very universal callback for the search() function, replacing
+ * many of the former individual functions at the cost of a more complex
+ * setup.
+ *
+ * How the function behaves, depends on the options passed in the $opts
+ * array, where the following settings can be used.
+ *
+ * depth int recursion depth. 0 for unlimited
+ * keeptxt bool keep .txt extension for IDs
+ * listfiles bool include files in listing
+ * listdirs bool include namespaces in listing
+ * pagesonly bool restrict files to pages
+ * skipacl bool do not check for READ permission
+ * sneakyacl bool don't recurse into nonreadable dirs
+ * hash bool create MD5 hash for files
+ * meta bool return file metadata
+ * filematch string match files against this regexp
+ * idmatch string match full ID against this regexp
+ * dirmatch string match directory against this regexp when adding
+ * nsmatch string match namespace against this regexp when adding
+ * recmatch string match directory against this regexp when recursing
+ * showmsg bool warn about non-ID files
+ * showhidden bool show hidden files too
+ * firsthead bool return first heading for pages
+ *
+ * @author Andreas Gohr <gohr@cosmocode.de>
+ */
+function search_universal(&$data,$base,$file,$type,$lvl,$opts){
+ $item = array();
+ $return = true;
+
+ // get ID and check if it is a valid one
+ $item['id'] = pathID($file);
+ if($item['id'] != cleanID($item['id'])){
+ if($opts['showmsg'])
+ msg(hsc($item['id']).' is not a valid file name for DokuWiki - skipped',-1);
+ return false; // skip non-valid files
+ }
+ $item['ns'] = getNS($item['id']);
+
+ if($type == 'd') {
+ // decide if to recursion into this directory is wanted
+ if(!$opts['depth']){
+ $return = true; // recurse forever
+ }else{
+ $depth = substr_count($file,'/');
+ if($depth >= $opts['depth']){
+ $return = false; // depth reached
+ }else{
+ $return = true;
+ }
+ }
+ if($return && !preg_match('/'.$opts['recmatch'].'/',$file)){
+ $return = false; // doesn't match
+ }
+ }
+
+ // check ACL
+ if(!$opts['skipacl']){
+ if($type == 'd'){
+ $item['perm'] = auth_quickaclcheck($item['id'].':*');
+ }else{
+ $item['perm'] = auth_quickaclcheck($item['id']); //FIXME check namespace for media files
+ }
+ }else{
+ $item['perm'] = AUTH_DELETE;
+ }
+
+ // are we done here maybe?
+ if($type == 'd'){
+ if(!$opts['listdirs']) return $return;
+ if(!$opts['skipacl'] && $opts['sneakyacl'] && $item['perm'] < AUTH_READ) return false; //neither list nor recurse
+ if($opts['dirmatch'] && !preg_match('/'.$opts['dirmatch'].'/',$file)) return $return;
+ if($opts['nsmatch'] && !preg_match('/'.$opts['nsmatch'].'/',$item['ns'])) return $return;
+ }else{
+ if(!$opts['listfiles']) return $return;
+ if(!$opts['skipacl'] && $item['perm'] < AUTH_READ) return $return;
+ if($opts['pagesonly'] && (substr($file,-4) != '.txt')) return $return;
+ if(!$conf['showhidden'] && isHiddenPage($id)) return $return;
+ if($opts['filematch'] && !preg_match('/'.$opts['filematch'].'/',$file)) return $return;
+ if($opts['idmatch'] && !preg_match('/'.$opts['idmatch'].'/',$item['id'])) return $return;
+ }
+
+ // still here? prepare the item
+ $item['type'] = $type;
+ $item['level'] = $lvl;
+ $item['open'] = $return;
+
+ if($opts['meta']){
+ $item['file'] = basename($file);
+ $item['size'] = filesize($base.'/'.$file);
+ $item['mtime'] = filemtime($base.'/'.$file);
+ $item['rev'] = $item['mtime'];
+ $item['writable'] = is_writable($base.'/'.$file);
+ $item['executable'] = is_executable($base.'/'.$file);
+ }
+
+ if($type == 'f'){
+ if($opts['hash']) $item['hash'] = md5(io_readFile($base.'/'.$file,false));
+ if($opts['firsthead']) $item['title'] = p_get_first_heading($item['id'],false);
+ }
+
+ // finally add the item
+ $data[] = $item;
+ return $return;
+}
+
+//Setup VIM: ex: et ts=4 enc=utf-8 :
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 03:27:34 +0000