404 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			404 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * Changelog handling functions
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 *
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 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
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 * @author     Andreas Gohr <andi@splitbrain.org>
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 */
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/**
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 * parses a changelog line into it's components
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 *
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 * @author Ben Coburn <btcoburn@silicodon.net>
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 *
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 * @param string $line changelog line
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 * @return array|bool parsed line or false
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 */
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function parseChangelogLine($line) {
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    $line = rtrim($line, "\n");
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    $tmp = explode("\t", $line);
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    if ($tmp!==false && count($tmp)>1) {
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        $info = array();
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        $info['date']  = (int)$tmp[0]; // unix timestamp
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        $info['ip']    = $tmp[1]; // IPv4 address (127.0.0.1)
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        $info['type']  = $tmp[2]; // log line type
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        $info['id']    = $tmp[3]; // page id
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        $info['user']  = $tmp[4]; // user name
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        $info['sum']   = $tmp[5]; // edit summary (or action reason)
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        $info['extra'] = $tmp[6]; // extra data (varies by line type)
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        if(isset($tmp[7]) && $tmp[7] !== '') { //last item has line-end||
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            $info['sizechange'] = (int) $tmp[7];
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        } else {
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            $info['sizechange'] = null;
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        }
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        return $info;
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    } else {
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        return false;
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    }
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}
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/**
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 * Add's an entry to the changelog and saves the metadata for the page
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 *
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 * @param int    $date      Timestamp of the change
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 * @param String $id        Name of the affected page
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 * @param String $type      Type of the change see DOKU_CHANGE_TYPE_*
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 * @param String $summary   Summary of the change
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 * @param mixed  $extra     In case of a revert the revision (timestmp) of the reverted page
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 * @param array  $flags     Additional flags in a key value array.
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 *                             Available flags:
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 *                             - ExternalEdit - mark as an external edit.
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 * @param null|int $sizechange Change of filesize
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 *
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 * @author Andreas Gohr <andi@splitbrain.org>
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 * @author Esther Brunner <wikidesign@gmail.com>
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 * @author Ben Coburn <btcoburn@silicodon.net>
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 */
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function addLogEntry($date, $id, $type=DOKU_CHANGE_TYPE_EDIT, $summary='', $extra='', $flags=null, $sizechange = null){
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    global $conf, $INFO;
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    /** @var Input $INPUT */
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    global $INPUT;
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    // check for special flags as keys
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    if (!is_array($flags)) { $flags = array(); }
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    $flagExternalEdit = isset($flags['ExternalEdit']);
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    $id = cleanid($id);
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    $file = wikiFN($id);
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    $created = @filectime($file);
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    $minor = ($type===DOKU_CHANGE_TYPE_MINOR_EDIT);
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    $wasRemoved = ($type===DOKU_CHANGE_TYPE_DELETE);
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    if(!$date) $date = time(); //use current time if none supplied
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    $remote = (!$flagExternalEdit)?clientIP(true):'127.0.0.1';
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    $user   = (!$flagExternalEdit)?$INPUT->server->str('REMOTE_USER'):'';
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    if($sizechange === null) {
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        $sizechange = '';
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    } else {
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        $sizechange = (int) $sizechange;
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    }
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    $strip = array("\t", "\n");
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    $logline = array(
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        'date'       => $date,
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        'ip'         => $remote,
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        'type'       => str_replace($strip, '', $type),
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        'id'         => $id,
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        'user'       => $user,
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        'sum'        => \dokuwiki\Utf8\PhpString::substr(str_replace($strip, '', $summary), 0, 255),
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        'extra'      => str_replace($strip, '', $extra),
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        'sizechange' => $sizechange
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    );
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    $wasCreated = ($type===DOKU_CHANGE_TYPE_CREATE);
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    $wasReverted = ($type===DOKU_CHANGE_TYPE_REVERT);
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    // update metadata
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    if (!$wasRemoved) {
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        $oldmeta = p_read_metadata($id);
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        $meta    = array();
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        if (
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            $wasCreated && (
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                empty($oldmeta['persistent']['date']['created']) ||
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                $oldmeta['persistent']['date']['created'] === $created
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            )
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        ){
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            // newly created
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            $meta['date']['created'] = $created;
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            if ($user){
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                $meta['creator'] = isset($INFO) ? $INFO['userinfo']['name'] : null;
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                $meta['user']    = $user;
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            }
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        } elseif (($wasCreated || $wasReverted) && !empty($oldmeta['persistent']['date']['created'])) {
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            // re-created / restored
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            $meta['date']['created']  = $oldmeta['persistent']['date']['created'];
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            $meta['date']['modified'] = $created; // use the files ctime here
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            $meta['creator'] = $oldmeta['persistent']['creator'];
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            if ($user) $meta['contributor'][$user] = isset($INFO) ? $INFO['userinfo']['name'] : null;
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        } elseif (!$minor) {   // non-minor modification
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            $meta['date']['modified'] = $date;
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            if ($user) $meta['contributor'][$user] = isset($INFO) ? $INFO['userinfo']['name'] : null;
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        }
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        $meta['last_change'] = $logline;
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        p_set_metadata($id, $meta);
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    }
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    // add changelog lines
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    $logline = implode("\t", $logline)."\n";
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    io_saveFile(metaFN($id,'.changes'),$logline,true); //page changelog
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    io_saveFile($conf['changelog'],$logline,true); //global changelog cache
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}
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/**
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 * Add's an entry to the media changelog
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 *
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 * @author Michael Hamann <michael@content-space.de>
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 * @author Andreas Gohr <andi@splitbrain.org>
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 * @author Esther Brunner <wikidesign@gmail.com>
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 * @author Ben Coburn <btcoburn@silicodon.net>
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 *
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 * @param int    $date      Timestamp of the change
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 * @param String $id        Name of the affected page
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 * @param String $type      Type of the change see DOKU_CHANGE_TYPE_*
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 * @param String $summary   Summary of the change
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 * @param mixed  $extra     In case of a revert the revision (timestmp) of the reverted page
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 * @param array  $flags     Additional flags in a key value array.
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 *                             Available flags:
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 *                             - (none, so far)
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 * @param null|int $sizechange Change of filesize
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 */
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function addMediaLogEntry(
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    $date,
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    $id,
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    $type=DOKU_CHANGE_TYPE_EDIT,
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    $summary='',
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    $extra='',
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    $flags=null,
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    $sizechange = null)
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{
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    global $conf;
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    /** @var Input $INPUT */
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    global $INPUT;
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    $id = cleanid($id);
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    if(!$date) $date = time(); //use current time if none supplied
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    $remote = clientIP(true);
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    $user   = $INPUT->server->str('REMOTE_USER');
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    if($sizechange === null) {
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        $sizechange = '';
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    } else {
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        $sizechange = (int) $sizechange;
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    }
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    $strip = array("\t", "\n");
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    $logline = array(
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        'date'       => $date,
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        'ip'         => $remote,
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        'type'       => str_replace($strip, '', $type),
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        'id'         => $id,
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        'user'       => $user,
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        'sum'        => \dokuwiki\Utf8\PhpString::substr(str_replace($strip, '', $summary), 0, 255),
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        'extra'      => str_replace($strip, '', $extra),
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        'sizechange' => $sizechange
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    );
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    // add changelog lines
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    $logline = implode("\t", $logline)."\n";
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    io_saveFile($conf['media_changelog'],$logline,true); //global media changelog cache
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    io_saveFile(mediaMetaFN($id,'.changes'),$logline,true); //media file's changelog
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}
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/**
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 * returns an array of recently changed files using the
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 * changelog
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 *
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 * The following constants can be used to control which changes are
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 * included. Add them together as needed.
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 *
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 * RECENTS_SKIP_DELETED   - don't include deleted pages
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 * RECENTS_SKIP_MINORS    - don't include minor changes
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 * RECENTS_ONLY_CREATION  - only include new created pages and media
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 * RECENTS_SKIP_SUBSPACES - don't include subspaces
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 * RECENTS_MEDIA_CHANGES  - return media changes instead of page changes
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 * RECENTS_MEDIA_PAGES_MIXED  - return both media changes and page changes
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 *
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 * @param int    $first   number of first entry returned (for paginating
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 * @param int    $num     return $num entries
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 * @param string $ns      restrict to given namespace
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 * @param int    $flags   see above
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 * @return array recently changed files
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 *
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 * @author Ben Coburn <btcoburn@silicodon.net>
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 * @author Kate Arzamastseva <pshns@ukr.net>
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 */
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function getRecents($first,$num,$ns='',$flags=0){
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    global $conf;
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    $recent = array();
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    $count  = 0;
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    if(!$num)
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        return $recent;
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    // read all recent changes. (kept short)
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    if ($flags & RECENTS_MEDIA_CHANGES) {
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        $lines = @file($conf['media_changelog']) ?: [];
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    } else {
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        $lines = @file($conf['changelog']) ?: [];
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    }
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    if (!is_array($lines)) {
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        $lines = array();
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    }
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    $lines_position = count($lines)-1;
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    $media_lines_position = 0;
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    $media_lines = array();
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    if ($flags & RECENTS_MEDIA_PAGES_MIXED) {
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        $media_lines = @file($conf['media_changelog']) ?: [];
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        if (!is_array($media_lines)) {
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            $media_lines = array();
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        }
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        $media_lines_position = count($media_lines)-1;
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    }
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    $seen = array(); // caches seen lines, _handleRecent() skips them
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    // handle lines
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    while ($lines_position >= 0 || (($flags & RECENTS_MEDIA_PAGES_MIXED) && $media_lines_position >=0)) {
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        if (empty($rec) && $lines_position >= 0) {
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            $rec = _handleRecent(@$lines[$lines_position], $ns, $flags, $seen);
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            if (!$rec) {
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                $lines_position --;
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                continue;
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            }
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        }
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        if (($flags & RECENTS_MEDIA_PAGES_MIXED) && empty($media_rec) && $media_lines_position >= 0) {
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            $media_rec = _handleRecent(
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                @$media_lines[$media_lines_position],
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                $ns,
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                $flags | RECENTS_MEDIA_CHANGES,
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                $seen
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            );
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            if (!$media_rec) {
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                $media_lines_position --;
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                continue;
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            }
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        }
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        if (($flags & RECENTS_MEDIA_PAGES_MIXED) && @$media_rec['date'] >= @$rec['date']) {
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            $media_lines_position--;
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            $x = $media_rec;
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            $x['media'] = true;
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            $media_rec = false;
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        } else {
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            $lines_position--;
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            $x = $rec;
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            if ($flags & RECENTS_MEDIA_CHANGES) $x['media'] = true;
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            $rec = false;
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        }
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        if(--$first >= 0) continue; // skip first entries
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        $recent[] = $x;
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        $count++;
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        // break when we have enough entries
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        if($count >= $num){ break; }
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    }
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    return $recent;
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}
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/**
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 * returns an array of files changed since a given time using the
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 * changelog
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 *
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 * The following constants can be used to control which changes are
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 * included. Add them together as needed.
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 *
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 * RECENTS_SKIP_DELETED   - don't include deleted pages
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 * RECENTS_SKIP_MINORS    - don't include minor changes
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 * RECENTS_ONLY_CREATION  - only include new created pages and media
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 * RECENTS_SKIP_SUBSPACES - don't include subspaces
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 * RECENTS_MEDIA_CHANGES  - return media changes instead of page changes
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 *
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 * @param int    $from    date of the oldest entry to return
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 * @param int    $to      date of the newest entry to return (for pagination, optional)
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 * @param string $ns      restrict to given namespace (optional)
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 * @param int    $flags   see above (optional)
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 * @return array of files
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 *
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 * @author Michael Hamann <michael@content-space.de>
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 * @author Ben Coburn <btcoburn@silicodon.net>
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 */
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function getRecentsSince($from,$to=null,$ns='',$flags=0){
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    global $conf;
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    $recent = array();
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    if($to && $to < $from)
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        return $recent;
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    // read all recent changes. (kept short)
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    if ($flags & RECENTS_MEDIA_CHANGES) {
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        $lines = @file($conf['media_changelog']);
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    } else {
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        $lines = @file($conf['changelog']);
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    }
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    if(!$lines) return $recent;
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    // we start searching at the end of the list
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    $lines = array_reverse($lines);
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    // handle lines
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    $seen = array(); // caches seen lines, _handleRecent() skips them
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    foreach($lines as $line){
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        $rec = _handleRecent($line, $ns, $flags, $seen);
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        if($rec !== false) {
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            if ($rec['date'] >= $from) {
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                if (!$to || $rec['date'] <= $to) {
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                    $recent[] = $rec;
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                }
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            } else {
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                break;
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            }
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        }
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    }
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    return array_reverse($recent);
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}
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/**
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 * Internal function used by getRecents
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 *
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 * don't call directly
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 *
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 * @see getRecents()
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 * @author Andreas Gohr <andi@splitbrain.org>
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 * @author Ben Coburn <btcoburn@silicodon.net>
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 *
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 * @param string $line   changelog line
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 * @param string $ns     restrict to given namespace
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 * @param int    $flags  flags to control which changes are included
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 * @param array  $seen   listing of seen pages
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 * @return array|bool    false or array with info about a change
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 */
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function _handleRecent($line,$ns,$flags,&$seen){
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    if(empty($line)) return false;   //skip empty lines
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    // split the line into parts
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    $recent = parseChangelogLine($line);
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    if ($recent===false) { return false; }
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    // skip seen ones
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    if(isset($seen[$recent['id']])) return false;
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    // skip changes, of only new items are requested
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    if($recent['type']!==DOKU_CHANGE_TYPE_CREATE && ($flags & RECENTS_ONLY_CREATION)) return false;
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    // skip minors
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    if($recent['type']===DOKU_CHANGE_TYPE_MINOR_EDIT && ($flags & RECENTS_SKIP_MINORS)) return false;
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    // remember in seen to skip additional sights
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    $seen[$recent['id']] = 1;
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    // check if it's a hidden page
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    if(isHiddenPage($recent['id'])) return false;
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    // filter namespace
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    if (($ns) && (strpos($recent['id'],$ns.':') !== 0)) return false;
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    // exclude subnamespaces
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    if (($flags & RECENTS_SKIP_SUBSPACES) && (getNS($recent['id']) != $ns)) return false;
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    // check ACL
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    if ($flags & RECENTS_MEDIA_CHANGES) {
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        $recent['perms'] = auth_quickaclcheck(getNS($recent['id']).':*');
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    } else {
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        $recent['perms'] = auth_quickaclcheck($recent['id']);
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    }
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    if ($recent['perms'] < AUTH_READ) return false;
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    // check existance
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    if($flags & RECENTS_SKIP_DELETED){
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        $fn = (($flags & RECENTS_MEDIA_CHANGES) ? mediaFN($recent['id']) : wikiFN($recent['id']));
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        if(!file_exists($fn)) return false;
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    }
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    return $recent;
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}
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