<?php
if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../');

// fix when '<?xml' isn't on the very first line
if(isset($HTTP_RAW_POST_DATA)) $HTTP_RAW_POST_DATA = trim($HTTP_RAW_POST_DATA);


require_once(DOKU_INC.'inc/init.php');

if(!$conf['xmlrpc']) {
    die('XML-RPC server not enabled.');
}

require_once(DOKU_INC.'inc/common.php');
require_once(DOKU_INC.'inc/auth.php');
session_write_close();  //close session
require_once(DOKU_INC.'inc/IXR_Library.php');


/**
 * Contains needed wrapper functions and registers all available
 * XMLRPC functions.
 */
class dokuwiki_xmlrpc_server extends IXR_IntrospectionServer {
    var $methods = array();

    /**
     * Constructor. Register methods and run Server
     */
    function dokuwiki_xmlrpc_server(){
        $this->IXR_IntrospectionServer();

        /* DokuWiki's own methods */
        $this->addCallback(
            'dokuwiki.getVersion',
            'getVersion',
            array('string'),
            'Returns the running DokuWiki version.'
        );

        /* Wiki API v2 http://www.jspwiki.org/wiki/WikiRPCInterface2 */
        $this->addCallback(
            'wiki.getRPCVersionSupported',
            'this:wiki_RPCVersion',
            array('int'),
            'Returns 2 with the supported RPC API version.'
        );
        $this->addCallback(
            'wiki.getPage',
            'this:rawPage',
            array('string','string'),
            'Get the raw Wiki text of page, latest version.'
        );
        $this->addCallback(
            'wiki.getPageVersion',
            'this:rawPage',
            array('string','string','int'),
            'Get the raw Wiki text of page.'
        );
        $this->addCallback(
            'wiki.getPageHTML',
            'this:htmlPage',
            array('string','string'),
            'Return page in rendered HTML, latest version.'
        );
        $this->addCallback(
            'wiki.getPageHTMLVersion',
            'this:htmlPage',
            array('string','string','int'),
            'Return page in rendered HTML.'
        );
        $this->addCallback(
            'wiki.getAllPages',
            'this:listPages',
            array('struct'),
            'Returns a list of all pages. The result is an array of utf8 pagenames.'
        );
        $this->addCallback(
            'wiki.getBackLinks',
            'this:listBackLinks',
            array('struct','string'),
            'Returns the pages that link to this page.'
        );
        $this->addCallback(
            'wiki.getPageInfo',
            'this:pageInfo',
            array('struct','string'),
            'Returns a struct with infos about the page.'
        );
        $this->addCallback(
            'wiki.getPageInfoVersion',
            'this:pageInfo',
            array('struct','string','int'),
            'Returns a struct with infos about the page.'
        );
        $this->addCallback(
            'wiki.getPageVersions',
            'this:pageVersions',
            array('struct','string','int'),
            'Returns the available revisions of the page.'
        );
        $this->addCallback(
            'wiki.putPage',
            'this:putPage',
            array('int', 'string', 'string', 'struct'),
            'Saves a wiki page.'
        );
        $this->addCallback(
            'wiki.listLinks',
            'this:listLinks',
            array('struct','string'),
            'Lists all links contained in a wiki page.'
        );
        $this->addCallback(
            'wiki.getRecentChanges',
            'this:getRecentChanges',
            array('struct','int'),
            'Returns a strukt about all recent changes since given timestamp.'
        );

        $this->serve();
    }

    /**
     * Return a raw wiki page
     */
    function rawPage($id,$rev=''){
        if(auth_quickaclcheck($id) < AUTH_READ){
            return new IXR_Error(1, 'You are not allowed to read this page');
        }
        return rawWiki($id,$rev);
    }

    /**
     * Return a wiki page rendered to html
     */
    function htmlPage($id,$rev=''){
        if(auth_quickaclcheck($id) < AUTH_READ){
            return new IXR_Error(1, 'You are not allowed to read this page');
        }
        return p_wiki_xhtml($id,$rev,false);
    }

    /**
     * List all pages - we use the indexer list here
     */
    function listPages(){
        require_once(DOKU_INC.'inc/fulltext.php');
        return ft_pageLookup('');
    }

    /**
     * Return a list of backlinks
     */
    function listBackLinks($id){
        require_once(DOKU_INC.'inc/fulltext.php');
        return ft_backlinks($id);
    }

    /**
     * Return some basic data about a page
     */
    function pageInfo($id,$rev=''){
        if(auth_quickaclcheck($id) < AUTH_READ){
            return new IXR_Error(1, 'You are not allowed to read this page');
        }
        $file = wikiFN($id,$rev);
        $time = @filemtime($file);
        if(!$time){
            return new IXR_Error(10, 'The requested page does not exist');
        }

        $info = getRevisionInfo($id, $time, 1024);

        $data = array(
            'name'         => $id,
            'lastModified' => new IXR_Date($time),
            'author'       => (($info['user']) ? $info['user'] : $info['ip']),
            'version'      => $time
        );

        return ($data);
    }

    /**
     * Save a wiki page
     *
     * @author Michael Klier <chi@chimeric.de> 
     */
    function putPage($id, $text, $params) {
        global $TEXT;
        global $lang;

        $id    = cleanID($id);
        $TEXT  = trim($text);
        $sum   = $params['sum'];
        $minor = $params['minor'];

        if(empty($id))
            return new IXR_Error(1, 'Empty page ID');

        if(!page_exists($id) && empty($TEXT)) {
            return new IXR_ERROR(1, 'Refusing to write an empty new wiki page');
        }

        if(auth_quickaclcheck($id) < AUTH_WRITE)
            return new IXR_Error(1, 'You are not allowed to edit this page');

        // Check, if page is locked
        if(checklock($id))
            return new IXR_Error(1, 'The page is currently locked');

        // SPAM check
        if(checkwordblock()) 
            return new IXR_Error(1, 'Positive wordblock check');

        // autoset summary on new pages
        if(!page_exists($id) && empty($sum)) {
            $sum = $lang['created'];
        }

        // autoset summary on deleted pages
        if(page_exists($id) && empty($TEXT) && empty($sum)) {
            $sum = $lang['deleted'];
        }

        lock($id);

        saveWikiText($id,$TEXT,$sum,$minor);

        unlock($id);

        return 0;
    }

    /**
     * Lists all links contained in a wiki page
     *
     * @author Michael Klier <chi@chimeric.de>
     */
    function listLinks($id) {
        if(auth_quickaclcheck($id) < AUTH_READ){
            return new IXR_Error(1, 'You are not allowed to read this page');
        }
        $links = array();

        // resolve page instructions
        $ins   = p_cached_instructions(wikiFN(cleanID($id)));

        // instantiate new Renderer - needed for interwiki links
        include(DOKU_INC.'inc/parser/xhtml.php');
        $Renderer = new Doku_Renderer_xhtml();
        $Renderer->interwiki = getInterwiki();

        // parse parse instructions
        foreach($ins as $in) {
            $link = array();
            switch($in[0]) {
                case 'internallink':
                    $link['type'] = 'local';
                    $link['page'] = $in[1][0];
                    $link['href'] = wl($in[1][0]);
                    array_push($links,$link);
                    break;
                case 'externallink':
                    $link['type'] = 'extern';
                    $link['page'] = $in[1][0];
                    $link['href'] = $in[1][0];
                    array_push($links,$link);
                    break;    
                case 'interwikilink':
                    $url = $Renderer->_resolveInterWiki($in[1][2],$in[1][3]);
                    $link['type'] = 'extern';
                    $link['page'] = $url;
                    $link['href'] = $url;
                    array_push($links,$link);
                    break;
            }
        }

        return ($links);
    }

    /**
     * Returns a list of recent changes since give timestamp
     *
     * @author Michael Klier <chi@chimeric.de>
     */
    function getRecentChanges($timestamp) {
        global $conf;

        if(strlen($timestamp) != 10)
            return new IXR_Error(20, 'The provided value is not a valid timestamp');

        $changes = array();

        require_once(DOKU_INC.'inc/changelog.php');
        require_once(DOKU_INC.'inc/pageutils.php');

        // read changes
        $lines = @file($conf['changelog']);

        if(empty($lines)) 
            return new IXR_Error(10, 'The changelog could not be read');

        // we start searching at the end of the list
        $lines = array_reverse($lines);

        // cache seen pages and skip them
        $seen = array(); 

        foreach($lines as $line) {

            if(empty($line)) continue; // skip empty lines

            $logline = parseChangelogLine($line);

            if($logline === false) continue;

            // skip seen ones
            if(isset($seen[$logline['id']])) continue;

            // skip minors
            if($logline['type'] === DOKU_CHANGE_TYPE_MINOR_EDIT && ($flags & RECENTS_SKIP_MINORS)) continue;

            // remember in seen to skip additional sights
            $seen[$logline['id']] = 1;

            // check if it's a hidden page
            if(isHiddenPage($logline['id'])) continue;

            // check ACL
            if(auth_quickaclcheck($logline['id']) < AUTH_READ) continue;

            // check existance
            if((!@file_exists(wikiFN($logline['id']))) && ($flags & RECENTS_SKIP_DELETED)) continue;

            // check if logline is still in the queried time frame
            if($logline['date'] >= $timestamp) {
                $change['name']         = $logline['id'];
                $change['lastModified'] = new IXR_Date($logline['date']);
                $change['author']       = $logline['user'];
                $change['version']      = $logline['date'];
                array_push($changes, $change);
            } else {
                $changes = array_reverse($changes);
                return ($changes);
            }
        }
        // in case we still have nothing at this point
        return new IXR_Error(30, 'There are no changes in the specified timeframe');
    }

    /**
     * Returns a list of available revisions of a given wiki page
     *
     * @author Michael Klier <chi@chimeric.de>
     */
    function pageVersions($id, $first) {
        global $conf;

        $versions = array();

        if(empty($id))
            return new IXR_Error(1, 'Empty page ID');

        require_once(DOKU_INC.'inc/changelog.php');

        $revisions = getRevisions($id, $first, $conf['recent']+1);

        if(count($revisions)==0 && $first!=0) {
            $first=0;
            $revisions = getRevisions($id, $first, $conf['recent']+1);
        }

        if(count($revisions)>0 && $first==0) {
            array_unshift($revisions, '');  // include current revision
            array_pop($revisions);          // remove extra log entry
        }

        $hasNext = false;
        if(count($revisions)>$conf['recent']) {
            $hasNext = true;
            array_pop($revisions); // remove extra log entry
        }

        if(!empty($revisions)) {
            foreach($revisions as $rev) {
                $file = wikiFN($id,$rev);
                $time = @filemtime($file);
                // we check if the page actually exists, if this is not the
                // case this can lead to less pages being returned than
                // specified via $conf['recent']
                if($time){
                    $info = getRevisionInfo($id, $time, 1024);
                    if(!empty($info)) {
                        $data['user'] = $info['user'];
                        $data['ip']   = $info['ip'];
                        $data['type'] = $info['type'];
                        $data['sum']  = $info['sum'];
                        $data['modified'] = new IXR_Date($info['date']);
                        $data['version'] = $info['date'];
                        array_push($versions, $data);
                    }
                }
            }
            return $versions;
        } else {
            return array(); 
        }
    }

    /**
     * The version of Wiki RPC API supported
     */
    function wiki_RPCVersion(){
        return 2;
    }
}

$server = new dokuwiki_xmlrpc_server();

// vim:ts=4:sw=4:enc=utf-8: