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<?php
/**
* Tools for dealing with other locally-hosted wikis.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* Helper tools for dealing with other wikis.
*/
class WikiMap {
/**
* Get a WikiReference object for $wikiID
*
* @param string $wikiID Wiki'd id (generally database name)
* @return WikiReference|null WikiReference object or null if the wiki was not found
*/
public static function getWiki( $wikiID ) {
$wikiReference = self::getWikiReferenceFromWgConf( $wikiID );
if ( $wikiReference ) {
return $wikiReference;
}
// Try sites, if $wgConf failed
return self::getWikiWikiReferenceFromSites( $wikiID );
}
/**
* @param string $wikiID
* @return WikiReference|null WikiReference object or null if the wiki was not found
*/
private static function getWikiReferenceFromWgConf( $wikiID ) {
global $wgConf;
$wgConf->loadFullData();
list( $major, $minor ) = $wgConf->siteFromDB( $wikiID );
if ( $major === null ) {
return null;
}
$server = $wgConf->get( 'wgServer', $wikiID, $major,
[ 'lang' => $minor, 'site' => $major ] );
$canonicalServer = $wgConf->get( 'wgCanonicalServer', $wikiID, $major,
[ 'lang' => $minor, 'site' => $major ] );
if ( $canonicalServer === false || $canonicalServer === null ) {
$canonicalServer = $server;
}
$path = $wgConf->get( 'wgArticlePath', $wikiID, $major,
[ 'lang' => $minor, 'site' => $major ] );
return new WikiReference( $canonicalServer, $path, $server );
}
/**
* @param string $wikiID
* @return WikiReference|null WikiReference object or null if the wiki was not found
*/
private static function getWikiWikiReferenceFromSites( $wikiID ) {
$siteLookup = \MediaWiki\MediaWikiServices::getInstance()->getSiteLookup();
$site = $siteLookup->getSite( $wikiID );
if ( !$site instanceof MediaWikiSite ) {
// Abort if not a MediaWikiSite, as this is about Wikis
return null;
}
$urlParts = wfParseUrl( $site->getPageUrl() );
if ( $urlParts === false || !isset( $urlParts['path'] ) || !isset( $urlParts['host'] ) ) {
// We can't create a meaningful WikiReference without URLs
return null;
}
// XXX: Check whether path contains a $1?
$path = $urlParts['path'];
if ( isset( $urlParts['query'] ) ) {
$path .= '?' . $urlParts['query'];
}
$canonicalServer = isset( $urlParts['scheme'] ) ? $urlParts['scheme'] : 'http';
$canonicalServer .= '://' . $urlParts['host'];
return new WikiReference( $canonicalServer, $path );
}
/**
* Convenience to get the wiki's display name
*
* @todo We can give more info than just the wiki id!
* @param string $wikiID Wiki'd id (generally database name)
* @return string|int Wiki's name or $wiki_id if the wiki was not found
*/
public static function getWikiName( $wikiID ) {
$wiki = WikiMap::getWiki( $wikiID );
if ( $wiki ) {
return $wiki->getDisplayName();
}
return $wikiID;
}
/**
* Convenience to get a link to a user page on a foreign wiki
*
* @param string $wikiID Wiki'd id (generally database name)
* @param string $user User name (must be normalised before calling this function!)
* @param string $text Link's text; optional, default to "User:$user"
* @return string HTML link or false if the wiki was not found
*/
public static function foreignUserLink( $wikiID, $user, $text = null ) {
return self::makeForeignLink( $wikiID, "User:$user", $text );
}
/**
* Convenience to get a link to a page on a foreign wiki
*
* @param string $wikiID Wiki'd id (generally database name)
* @param string $page Page name (must be normalised before calling this function!)
* @param string $text Link's text; optional, default to $page
* @return string HTML link or false if the wiki was not found
*/
public static function makeForeignLink( $wikiID, $page, $text = null ) {
if ( !$text ) {
$text = $page;
}
$url = self::getForeignURL( $wikiID, $page );
if ( $url === false ) {
return false;
}
return Linker::makeExternalLink( $url, $text );
}
/**
* Convenience to get a url to a page on a foreign wiki
*
* @param string $wikiID Wiki'd id (generally database name)
* @param string $page Page name (must be normalised before calling this function!)
* @param string|null $fragmentId
*
* @return string|bool URL or false if the wiki was not found
*/
public static function getForeignURL( $wikiID, $page, $fragmentId = null ) {
$wiki = WikiMap::getWiki( $wikiID );
if ( $wiki ) {
return $wiki->getFullUrl( $page, $fragmentId );
}
return false;
}
}
/**
* Reference to a locally-hosted wiki
*/
class WikiReference {
private $mCanonicalServer; ///< canonical server URL, e.g. 'https://www.mediawiki.org'
private $mServer; ///< server URL, may be protocol-relative, e.g. '//www.mediawiki.org'
private $mPath; ///< path, '/wiki/$1'
/**
* @param string $canonicalServer
* @param string $path
* @param null|string $server
*/
public function __construct( $canonicalServer, $path, $server = null ) {
$this->mCanonicalServer = $canonicalServer;
$this->mPath = $path;
$this->mServer = $server === null ? $canonicalServer : $server;
}
/**
* Get the URL in a way to be displayed to the user
* More or less Wikimedia specific
*
* @return string
*/
public function getDisplayName() {
$parsed = wfParseUrl( $this->mCanonicalServer );
if ( $parsed ) {
return $parsed['host'];
} else {
// Invalid server spec.
// There's no sane thing to do here, so just return the canonical server name in full.
return $this->mCanonicalServer;
}
}
/**
* Helper function for getUrl()
*
* @todo FIXME: This may be generalized...
*
* @param string $page Page name (must be normalised before calling this function!
* May contain a section part.)
* @param string|null $fragmentId
*
* @return string relative URL, without the server part.
*/
private function getLocalUrl( $page, $fragmentId = null ) {
$page = wfUrlencode( str_replace( ' ', '_', $page ) );
if ( is_string( $fragmentId ) && $fragmentId !== '' ) {
$page .= '#' . wfUrlencode( $fragmentId );
}
return str_replace( '$1', $page, $this->mPath );
}
/**
* Get a canonical (i.e. based on $wgCanonicalServer) URL to a page on this foreign wiki
*
* @param string $page Page name (must be normalised before calling this function!)
* @param string|null $fragmentId
*
* @return string Url
*/
public function getCanonicalUrl( $page, $fragmentId = null ) {
return $this->mCanonicalServer . $this->getLocalUrl( $page, $fragmentId );
}
/**
* Get a canonical server URL
* @return string
*/
public function getCanonicalServer() {
return $this->mCanonicalServer;
}
/**
* Alias for getCanonicalUrl(), for backwards compatibility.
* @param string $page
* @param string|null $fragmentId
*
* @return string
*/
public function getUrl( $page, $fragmentId = null ) {
return $this->getCanonicalUrl( $page, $fragmentId );
}
/**
* Get a URL based on $wgServer, like Title::getFullURL() would produce
* when called locally on the wiki.
*
* @param string $page Page name (must be normalized before calling this function!)
* @param string|null $fragmentId
*
* @return string URL
*/
public function getFullUrl( $page, $fragmentId = null ) {
return $this->mServer .
$this->getLocalUrl( $page, $fragmentId );
}
}