2 // $Id: XmlRpcServer.php,v 1.12 2004-12-18 16:49:29 rurban Exp $
3 /* Copyright (C) 2002, Lawrence Akka <lakka@users.sourceforge.net>
7 * This file is part of PhpWiki.
9 * PhpWiki is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * PhpWiki is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with PhpWiki; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * LIBRARY USED - POSSIBLE PROBLEMS
24 * ================================
26 * This file provides an XML-RPC interface for PhpWiki. It uses the XML-RPC
27 * library for PHP by Edd Dumbill - see http://xmlrpc.usefulinc.com/php.html
30 * PHP >= 4.1.0 includes experimental support for the xmlrpc-epi c library
31 * written by Dan Libby (see http://uk2.php.net/manual/en/ref.xmlrpc.php).
32 * This is not compiled into PHP by default. If it *is* compiled into your installation
33 * (ie you have --with-xmlrpc) there may well be namespace conflicts with the xml-rpc
34 * library used by this code, and you will get errors.
36 * INTERFACE SPECIFICTION
37 * ======================
39 * The interface specification is that discussed at
40 * http://www.ecyrd.com/JSPWiki/Wiki.jsp?page=WikiRPCInterface
42 * See also http://www.usemod.com/cgi-bin/mb.pl?XmlRpc
43 * or http://www.devshed.com/c/a/PHP/Using-XMLRPC-with-PHP/
45 * Note: All XMLRPC methods are automatically prefixed with "wiki."
46 * eg. "wiki.getAllPages"
51 Resolve namespace conflicts
52 Remove all warnings from xmlrpc.inc
53 Return list of external links in listLinks
54 Support RSS2 cloud subscription
55 Test hwiki.jar xmlrpc interface (java visualization plugin)
57 Make use of the xmlrpc extension if found. http://xmlrpc-epi.sourceforge.net/
60 // Intercept GET requests from confused users. Only POST is allowed here!
61 // There is some indication that $HTTP_SERVER_VARS is deprecated in php > 4.1.0
62 // in favour of $_Server, but as far as I know, it still works.
63 if ($GLOBALS['HTTP_SERVER_VARS']['REQUEST_METHOD'] != "POST")
65 die('This is the address of the XML-RPC interface.' .
66 ' You must use XML-RPC calls to access information here');
69 // All these global declarations make it so that this file
70 // (XmlRpcServer.php) can be included within a function body
71 // (not in global scope), and things will still work....
73 global $xmlrpcI4, $xmlrpcInt, $xmlrpcBoolean, $xmlrpcDouble, $xmlrpcString;
74 global $xmlrpcDateTime, $xmlrpcBase64, $xmlrpcArray, $xmlrpcStruct;
77 global $xmlrpcerr, $xmlrpcstr;
78 global $xmlrpc_defencoding;
79 global $xmlrpcName, $xmlrpcVersion;
80 global $xmlrpcerruser, $xmlrpcerrxml;
81 global $xmlrpc_backslash;
84 if (loadPhpExtension('xmlrpc')) { // fast c lib
85 define('XMLRPC_EXT_LOADED', true);
87 global $xmlrpc_util_path;
88 $xmlrpc_util_path = dirname(__FILE__)."/XMLRPC/";
89 include_once("lib/XMLRPC/xmlrpc_emu.inc");
90 global $_xmlrpcs_debug;
91 include_once("lib/XMLRPC/xmlrpcs_emu.inc");
93 } else { // slow php lib
94 define('XMLRPC_EXT_LOADED', true);
96 // Include the php XML-RPC library
97 include_once("lib/XMLRPC/xmlrpc.inc");
99 global $_xmlrpcs_dmap;
100 global $_xmlrpcs_debug;
101 include_once("lib/XMLRPC/xmlrpcs.inc");
106 define ("WIKI_XMLRPC_VERSION", 2);
109 * Helper function: Looks up a page revision (most recent by default) in the wiki database
111 * @param xmlrpcmsg $params : string pagename [int version]
112 * @return WikiDB _PageRevision object, or false if no such page
115 function _getPageRevision ($params)
118 $ParamPageName = $params->getParam(0);
119 $ParamVersion = $params->getParam(1);
120 $pagename = short_string_decode($ParamPageName->scalarval());
121 $version = ($ParamVersion) ? ($ParamVersion->scalarval()):(0);
122 // FIXME: test for version <=0 ??
123 $dbh = $request->getDbh();
124 if ($dbh->isWikiPage($pagename)) {
125 $page = $dbh->getPage($pagename);
127 $revision = $page->getCurrentRevision();
129 $revision = $page->getRevision($version);
137 * Helper functions for encoding/decoding strings.
139 * According to WikiRPC spec, all returned strings take one of either
140 * two forms. Short strings (page names, and authors) are converted to
141 * UTF-8, then rawurlencode()d, and returned as XML-RPC <code>strings</code>.
142 * Long strings (page content) are converted to UTF-8 then returned as
143 * XML-RPC <code>base64</code> binary objects.
147 * Urlencode ASCII control characters.
149 * (And control characters...)
155 function UrlencodeControlCharacters($str) {
156 return preg_replace('/([\x00-\x1F])/e', "urlencode('\\1')", $str);
160 * Convert a short string (page name, author) to xmlrpcval.
162 function short_string ($str) {
163 return new xmlrpcval(UrlencodeControlCharacters(utf8_encode($str)), 'string');
167 * Convert a large string (page content) to xmlrpcval.
169 function long_string ($str) {
170 return new xmlrpcval(utf8_encode($str), 'base64');
174 * Decode a short string (e.g. page name)
176 function short_string_decode ($str) {
177 return utf8_decode(urldecode($str));
181 * Get an xmlrpc "No such page" error message
183 function NoSuchPage ($pagename='')
185 global $xmlrpcerruser;
186 return new xmlrpcresp(0, $xmlrpcerruser + 1, "No such page ".$pagename);
190 // ****************************************************************************
191 // Main API functions follow
192 // ****************************************************************************
196 * int getRPCVersionSupported(): Returns 1 for this version of the API
198 $wiki_dmap['getRPCVersionSupported']
199 = array('signature' => array(array($xmlrpcInt)),
200 'documentation' => 'Get the version of the wiki API',
201 'function' => 'getRPCVersionSupported');
203 // The function must be a function in the global scope which services the XML-RPC
205 function getRPCVersionSupported($params)
207 return new xmlrpcresp(new xmlrpcval((integer)WIKI_XMLRPC_VERSION, "int"));
211 * array getRecentChanges(Date timestamp) : Get list of changed pages since
212 * timestamp, which should be in UTC. The result is an array, where each element
214 * name (string) : Name of the page. The name is UTF-8 with URL encoding to make it ASCII.
215 * lastModified (date) : Date of last modification, in UTC.
216 * author (string) : Name of the author (if available). Again, name is UTF-8 with URL encoding.
217 * version (int) : Current version.
218 * A page MAY be specified multiple times. A page MAY NOT be specified multiple
219 * times with the same modification date.
221 $wiki_dmap['getRecentChanges']
222 = array('signature' => array(array($xmlrpcArray, $xmlrpcDateTime)),
223 'documentation' => 'Get a list of changed pages since [timestamp]',
224 'function' => 'getRecentChanges');
226 function getRecentChanges($params)
229 // Get the first parameter as an ISO 8601 date. Assume UTC
230 $encoded_date = $params->getParam(0);
231 $datetime = iso8601_decode($encoded_date->scalarval(), 1);
232 $dbh = $request->getDbh();
234 $iterator = $dbh->mostRecent(array('since' => $datetime));
235 while ($page = $iterator->next()) {
236 // $page contains a WikiDB_PageRevision object
237 // no need to url encode $name, because it is already stored in that format ???
238 $name = short_string($page->getPageName());
239 $lastmodified = new xmlrpcval(iso8601_encode($page->get('mtime')), "dateTime.iso8601");
240 $author = short_string($page->get('author'));
241 $version = new xmlrpcval($page->getVersion(), 'int');
243 // Build an array of xmlrpc structs
244 $pages[] = new xmlrpcval(array('name'=>$name,
245 'lastModified'=>$lastmodified,
247 'version'=>$version),
250 return new xmlrpcresp(new xmlrpcval($pages, "array"));
255 * base64 getPage( String pagename ): Get the raw Wiki text of page, latest version.
256 * Page name must be UTF-8, with URL encoding. Returned value is a binary object,
257 * with UTF-8 encoded page data.
259 $wiki_dmap['getPage']
260 = array('signature' => array(array($xmlrpcBase64, $xmlrpcString)),
261 'documentation' => 'Get the raw Wiki text of the current version of a page',
262 'function' => 'getPage');
264 function getPage($params)
266 $revision = _getPageRevision($params);
269 $ParamPageName = $params->getParam(0);
270 $pagename = short_string_decode($ParamPageName->scalarval());
271 return NoSuchPage($pagename);
274 return new xmlrpcresp(long_string($revision->getPackedContent()));
279 * base64 getPageVersion( String pagename, int version ): Get the raw Wiki text of page.
280 * Returns UTF-8, expects UTF-8 with URL encoding.
282 $wiki_dmap['getPageVersion']
283 = array('signature' => array(array($xmlrpcBase64, $xmlrpcString, $xmlrpcInt)),
284 'documentation' => 'Get the raw Wiki text of a page version',
285 'function' => 'getPageVersion');
287 function getPageVersion($params)
289 // error checking is done in getPage
290 return getPage($params);
294 * base64 getPageHTML( String pagename ): Return page in rendered HTML.
295 * Returns UTF-8, expects UTF-8 with URL encoding.
298 $wiki_dmap['getPageHTML']
299 = array('signature' => array(array($xmlrpcBase64, $xmlrpcString)),
300 'documentation' => 'Get the current version of a page rendered in HTML',
301 'function' => 'getPageHTML');
303 function getPageHTML($params)
305 $revision = _getPageRevision($params);
309 $content = $revision->getTransformedContent();
310 $html = $content->asXML();
311 // HACK: Get rid of outer <div class="wikitext">
312 if (preg_match('/^\s*<div class="wikitext">/', $html, $m1)
313 && preg_match('@</div>\s*$@', $html, $m2)) {
314 $html = substr($html, strlen($m1[0]), -strlen($m2[0]));
317 return new xmlrpcresp(long_string($html));
321 * base64 getPageHTMLVersion( String pagename, int version ): Return page in rendered HTML, UTF-8.
323 $wiki_dmap['getPageHTMLVersion']
324 = array('signature' => array(array($xmlrpcBase64, $xmlrpcString, $xmlrpcInt)),
325 'documentation' => 'Get a version of a page rendered in HTML',
326 'function' => 'getPageHTMLVersion');
328 function getPageHTMLVersion($params)
330 return getPageHTML($params);
334 * getAllPages(): Returns a list of all pages. The result is an array of strings.
336 $wiki_dmap['getAllPages']
337 = array('signature' => array(array($xmlrpcArray)),
338 'documentation' => 'Returns a list of all pages as an array of strings',
339 'function' => 'getAllPages');
341 function getAllPages($params)
344 $dbh = $request->getDbh();
345 $iterator = $dbh->getAllPages();
347 while ($page = $iterator->next()) {
348 $pages[] = short_string($page->getName());
350 return new xmlrpcresp(new xmlrpcval($pages, "array"));
354 * struct getPageInfo( string pagename ) : returns a struct with elements:
355 * name (string): the canonical page name
356 * lastModified (date): Last modification date
357 * version (int): current version
358 * author (string): author name
360 $wiki_dmap['getPageInfo']
361 = array('signature' => array(array($xmlrpcStruct, $xmlrpcString)),
362 'documentation' => 'Gets info about the current version of a page',
363 'function' => 'getPageInfo');
365 function getPageInfo($params)
367 $revision = _getPageRevision($params);
371 $name = short_string($revision->getPageName());
372 $version = new xmlrpcval ($revision->getVersion(), "int");
373 $lastmodified = new xmlrpcval(iso8601_encode($revision->get('mtime'), 0),
375 $author = short_string($revision->get('author'));
377 return new xmlrpcresp(new xmlrpcval(array('name' => $name,
378 'lastModified' => $lastmodified,
379 'version' => $version,
380 'author' => $author),
385 * struct getPageInfoVersion( string pagename, int version ) : returns
386 * a struct just like plain getPageInfo(), but this time for a
389 $wiki_dmap['getPageInfoVersion']
390 = array('signature' => array(array($xmlrpcStruct, $xmlrpcString, $xmlrpcInt)),
391 'documentation' => 'Gets info about a page version',
392 'function' => 'getPageInfoVersion');
394 function getPageInfoVersion($params)
396 return getPageInfo($params);
400 /* array listLinks( string pagename ): Lists all links for a given page. The
401 * returned array contains structs, with the following elements:
402 * name (string) : The page name or URL the link is to.
403 * type (int) : The link type. Zero (0) for internal Wiki link,
404 * one (1) for external link (URL - image link, whatever).
406 $wiki_dmap['listLinks']
407 = array('signature' => array(array($xmlrpcArray, $xmlrpcString)),
408 'documentation' => 'Lists all links for a given page',
409 'function' => 'listLinks');
411 function listLinks($params)
415 $ParamPageName = $params->getParam(0);
416 $pagename = short_string_decode($ParamPageName->scalarval());
417 $dbh = $request->getDbh();
418 if (! $dbh->isWikiPage($pagename))
419 return NoSuchPage($pagename);
421 $page = $dbh->getPage($pagename);
423 // The fast WikiDB method. below is the slow method which goes through the formatter
424 // NB no clean way to extract a list of external links yet, so
425 // only internal links returned. i.e. all type 'local'.
426 $linkiterator = $page->getPageLinks();
427 $linkstruct = array();
428 while ($currentpage = $linkiterator->next()) {
429 $currentname = $currentpage->getName();
430 // Compute URL to page
432 // How to check external links?
433 if (!$currentpage->exists()) $args['action'] = 'edit';
435 // FIXME: Autodetected value of VIRTUAL_PATH wrong,
436 // this make absolute URLs constructed by WikiURL wrong.
437 // Also, if USE_PATH_INFO is false, WikiURL is wrong
438 // due to its use of SCRIPT_NAME.
439 //$use_abspath = USE_PATH_INFO && ! preg_match('/RPC2.php$/', VIRTUAL_PATH);
441 // USE_PATH_INFO must be defined in index.php or config.ini but not before,
442 // otherwise it is ignored and xmlrpc urls are wrong.
443 // SCRIPT_NAME here is always .../RPC2.php
444 if (USE_PATH_INFO and !$args) {
445 $url = preg_replace('/%2f/i', '/', rawurlencode($currentname));
446 } elseif (!USE_PATH_INFO) {
447 $url = str_replace("/RPC2.php","/index.php", WikiURL($currentname, $args, true));
449 $url = WikiURL($currentname, $args);
451 $linkstruct[] = new xmlrpcval(array('page'=> short_string($currentname),
452 'type'=> new xmlrpcval('local', 'string'),
453 'href' => short_string($url)),
458 $current = $page->getCurrentRevision();
459 $content = $current->getTransformedContent();
460 $links = $content->getLinkInfo();
461 foreach ($links as $link) {
462 // We used to give an href for unknown pages that
463 // included action=edit. I think that's probably the
464 // wrong thing to do.
465 $linkstruct[] = new xmlrpcval(array('page'=> short_string($link->page),
466 'type'=> new xmlrpcval($link->type, 'string'),
467 'href' => short_string($link->href),
468 //'pageref' => short_string($link->pageref),
473 return new xmlrpcresp(new xmlrpcval ($linkstruct, "array"));
478 * Client subscribes to a RecentChanges-like channel, getting a short
479 * callback notification on every change. Like PageChangeNotification, just shorter
480 * and more complicated
481 * RSS2 support (not yet), since radio userland's rss-0.92. now called RSS2.
482 * BTW: Radio Userland deprecated this interface.
484 * boolean wiki.rssPleaseNotify ( notifyProcedure, port, path, protocol, urlList )
485 * returns: true or false
487 * Check of the channel behind the rssurl has a cloud element,
488 * if the client has a direct IP connection (no NAT),
489 * register the client on the WikiDB notification handler
491 * http://backend.userland.com/publishSubscribeWalkthrough
492 * http://www.soapware.org/xmlStorageSystem#rssPleaseNotify
493 * http://www.thetwowayweb.com/soapmeetsrss#rsscloudInterface
495 $wiki_dmap['rssPleaseNotify']
496 = array('signature' => array(array($xmlrpcStruct, $xmlrpcBoolean)),
497 'documentation' => 'RSS2 change notification subscriber channel',
498 'function' => 'rssPleaseNotify');
500 function rssPleaseNotify($params)
502 // register the clients IP
503 return new xmlrpcresp(new xmlrpcval (0, "boolean"));
506 $wiki_dmap['mailPasswordToUser']
507 = array('signature' => array(array($xmlrpcStruct, $xmlrpcString)),
508 'documentation' => 'RSS2 change notification subscriber channel',
509 'function' => 'mailPasswordToUser');
511 function mailPasswordToUser($params)
513 return new xmlrpcresp(new xmlrpcval (0, "boolean"));
517 * Construct the server instance, and set up the dispatch map,
518 * which maps the XML-RPC methods on to the wiki functions.
519 * Provide the "wiki." prefix to each function
521 class XmlRpcServer extends xmlrpc_server
523 function XmlRpcServer ($request = false) {
525 foreach ($wiki_dmap as $name => $val)
526 $dmap['wiki.' . $name] = $val;
528 $this->xmlrpc_server($dmap, 0 /* delay service*/);
531 function service () {
532 global $ErrorManager;
534 $ErrorManager->pushErrorHandler(new WikiMethodCb($this, '_errorHandler'));
535 xmlrpc_server::service();
536 $ErrorManager->popErrorHandler();
539 function _errorHandler ($e) {
540 $msg = htmlspecialchars($e->asString());
541 // '--' not allowed within xml comment
542 $msg = str_replace('--', '--', $msg);
543 if (function_exists('xmlrpc_debugmsg'))
544 xmlrpc_debugmsg($msg);
550 // (c-file-style: "gnu")
555 // c-hanging-comment-ender-p: nil
556 // indent-tabs-mode: nil