MediaWiki 1.7.1 wiederhergestellt

1 files changed, 736 insertions, 0 deletions

diff --git a/includes/Export.php b/includes/Export.php
new file mode 100644
index 00000000..da92694e
--- /dev/null
+++ b/includes/Export.php
@@ -0,0 +1,736 @@
+<?php
+# Copyright (C) 2003, 2005, 2006 Brion Vibber <brion@pobox.com>
+# http://www.mediawiki.org/
+#
+# 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
+/**
+ *
+ * @package MediaWiki
+ * @subpackage SpecialPage
+ */
+
+/** */
+
+define( 'MW_EXPORT_FULL',     0 );
+define( 'MW_EXPORT_CURRENT',  1 );
+
+define( 'MW_EXPORT_BUFFER',   0 );
+define( 'MW_EXPORT_STREAM',   1 );
+
+define( 'MW_EXPORT_TEXT',     0 );
+define( 'MW_EXPORT_STUB',     1 );
+
+
+/**
+ * @package MediaWiki
+ * @subpackage SpecialPage
+ */
+class WikiExporter {
+	
+	var $list_authors = false ; # Return distinct author list (when not returning full history)
+	var $author_list = "" ;
+	
+	/**
+	 * If using MW_EXPORT_STREAM to stream a large amount of data,
+	 * provide a database connection which is not managed by
+	 * LoadBalancer to read from: some history blob types will
+	 * make additional queries to pull source data while the
+	 * main query is still running.
+	 *
+	 * @param Database $db
+	 * @param int $history one of MW_EXPORT_FULL or MW_EXPORT_CURRENT
+	 * @param int $buffer one of MW_EXPORT_BUFFER or MW_EXPORT_STREAM
+	 */
+	function WikiExporter( &$db, $history = MW_EXPORT_CURRENT,
+			$buffer = MW_EXPORT_BUFFER, $text = MW_EXPORT_TEXT ) {
+		$this->db =& $db;
+		$this->history = $history;
+		$this->buffer  = $buffer;
+		$this->writer  = new XmlDumpWriter();
+		$this->sink    = new DumpOutput();
+		$this->text    = $text;
+	}
+
+	/**
+	 * Set the DumpOutput or DumpFilter object which will receive
+	 * various row objects and XML output for filtering. Filters
+	 * can be chained or used as callbacks.
+	 *
+	 * @param mixed $callback
+	 */
+	function setOutputSink( &$sink ) {
+		$this->sink =& $sink;
+	}
+
+	function openStream() {
+		$output = $this->writer->openStream();
+		$this->sink->writeOpenStream( $output );
+	}
+
+	function closeStream() {
+		$output = $this->writer->closeStream();
+		$this->sink->writeCloseStream( $output );
+	}
+
+	/**
+	 * Dumps a series of page and revision records for all pages
+	 * in the database, either including complete history or only
+	 * the most recent version.
+	 */
+	function allPages() {
+		return $this->dumpFrom( '' );
+	}
+
+	/**
+	 * Dumps a series of page and revision records for those pages
+	 * in the database falling within the page_id range given.
+	 * @param int $start Inclusive lower limit (this id is included)
+	 * @param int $end   Exclusive upper limit (this id is not included)
+	 *                   If 0, no upper limit.
+	 */
+	function pagesByRange( $start, $end ) {
+		$condition = 'page_id >= ' . intval( $start );
+		if( $end ) {
+			$condition .= ' AND page_id < ' . intval( $end );
+		}
+		return $this->dumpFrom( $condition );
+	}
+
+	/**
+	 * @param Title $title
+	 */
+	function pageByTitle( $title ) {
+		return $this->dumpFrom(
+			'page_namespace=' . $title->getNamespace() .
+			' AND page_title=' . $this->db->addQuotes( $title->getDbKey() ) );
+	}
+
+	function pageByName( $name ) {
+		$title = Title::newFromText( $name );
+		if( is_null( $title ) ) {
+			return new WikiError( "Can't export invalid title" );
+		} else {
+			return $this->pageByTitle( $title );
+		}
+	}
+
+	function pagesByName( $names ) {
+		foreach( $names as $name ) {
+			$this->pageByName( $name );
+		}
+	}
+
+
+	// -------------------- private implementation below --------------------
+
+	# Generates the distinct list of authors of an article
+	# Not called by default (depends on $this->list_authors)
+	# Can be set by Special:Export when not exporting whole history
+	function do_list_authors ( $page , $revision , $cond ) {
+		$fname = "do_list_authors" ;
+		wfProfileIn( $fname );
+		$this->author_list = "<contributors>";
+		$sql = "SELECT DISTINCT rev_user_text,rev_user FROM {$page},{$revision} WHERE page_id=rev_page AND " . $cond ;
+		$result = $this->db->query( $sql, $fname );
+		$resultset = $this->db->resultObject( $result );
+		while( $row = $resultset->fetchObject() ) {
+			$this->author_list .= "<contributor>" . 
+				"<username>" . 
+				htmlentities( $row->rev_user_text )  . 
+				"</username>" . 
+				"<id>" . 
+				$row->rev_user .
+				"</id>" . 
+				"</contributor>";
+		}
+		wfProfileOut( $fname );
+		$this->author_list .= "</contributors>";
+	}
+
+	function dumpFrom( $cond = '' ) {
+		$fname = 'WikiExporter::dumpFrom';
+		wfProfileIn( $fname );
+
+		$page     = $this->db->tableName( 'page' );
+		$revision = $this->db->tableName( 'revision' );
+		$text     = $this->db->tableName( 'text' );
+		
+		if( $this->history == MW_EXPORT_FULL ) {
+			$join = 'page_id=rev_page';
+		} elseif( $this->history == MW_EXPORT_CURRENT ) {
+			if ( $this->list_authors && $cond != '' )  { // List authors, if so desired
+				$this->do_list_authors ( $page , $revision , $cond );
+			}
+			$join = 'page_id=rev_page AND page_latest=rev_id';
+		} else {
+			wfProfileOut( $fname );
+			return new WikiError( "$fname given invalid history dump type." );
+		}
+		$where = ( $cond == '' ) ? '' : "$cond AND";
+
+		if( $this->buffer == MW_EXPORT_STREAM ) {
+			$prev = $this->db->bufferResults( false );
+		}
+		if( $cond == '' ) {
+			// Optimization hack for full-database dump
+			$revindex = $pageindex = $this->db->useIndexClause("PRIMARY");
+			$straight = ' /*! STRAIGHT_JOIN */ ';
+		} else {
+			$pageindex = '';
+			$revindex = '';
+			$straight = '';
+		}
+		if( $this->text == MW_EXPORT_STUB ) {
+			$sql = "SELECT $straight * FROM
+					$page $pageindex,
+					$revision $revindex
+					WHERE $where $join
+					ORDER BY page_id";
+		} else {
+			$sql = "SELECT $straight * FROM
+					$page $pageindex,
+					$revision $revindex,
+					$text
+					WHERE $where $join AND rev_text_id=old_id
+					ORDER BY page_id";
+		}
+		$result = $this->db->query( $sql, $fname );
+		$wrapper = $this->db->resultObject( $result );
+		$this->outputStream( $wrapper );
+		
+		if ( $this->list_authors ) {
+			$this->outputStream( $wrapper );
+		}
+
+		if( $this->buffer == MW_EXPORT_STREAM ) {
+			$this->db->bufferResults( $prev );
+		}
+
+		wfProfileOut( $fname );
+	}
+
+	/**
+	 * Runs through a query result set dumping page and revision records.
+	 * The result set should be sorted/grouped by page to avoid duplicate
+	 * page records in the output.
+	 *
+	 * The result set will be freed once complete. Should be safe for
+	 * streaming (non-buffered) queries, as long as it was made on a
+	 * separate database connection not managed by LoadBalancer; some
+	 * blob storage types will make queries to pull source data.
+	 *
+	 * @param ResultWrapper $resultset
+	 * @access private
+	 */
+	function outputStream( $resultset ) {
+		$last = null;
+		while( $row = $resultset->fetchObject() ) {
+			if( is_null( $last ) ||
+				$last->page_namespace != $row->page_namespace ||
+				$last->page_title     != $row->page_title ) {
+				if( isset( $last ) ) {
+					$output = $this->writer->closePage();
+					$this->sink->writeClosePage( $output );
+				}
+				$output = $this->writer->openPage( $row );
+				$this->sink->writeOpenPage( $row, $output );
+				$last = $row;
+			}
+			$output = $this->writer->writeRevision( $row );
+			$this->sink->writeRevision( $row, $output );
+		}
+		if( isset( $last ) ) {
+			$output = $this->author_list . $this->writer->closePage();
+			$this->sink->writeClosePage( $output );
+		}
+		$resultset->free();
+	}
+}
+
+class XmlDumpWriter {
+
+	/**
+	 * Returns the export schema version.
+	 * @return string
+	 */
+	function schemaVersion() {
+		return "0.3"; // FIXME: upgrade to 0.4 when updated XSD is ready, for the revision deletion bits
+	}
+
+	/**
+	 * Opens the XML output stream's root <mediawiki> element.
+	 * This does not include an xml directive, so is safe to include
+	 * as a subelement in a larger XML stream. Namespace and XML Schema
+	 * references are included.
+	 *
+	 * Output will be encoded in UTF-8.
+	 *
+	 * @return string
+	 */
+	function openStream() {
+		global $wgContLanguageCode;
+		$ver = $this->schemaVersion();
+		return wfElement( 'mediawiki', array(
+			'xmlns'              => "http://www.mediawiki.org/xml/export-$ver/",
+			'xmlns:xsi'          => "http://www.w3.org/2001/XMLSchema-instance",
+			'xsi:schemaLocation' => "http://www.mediawiki.org/xml/export-$ver/ " .
+			                        "http://www.mediawiki.org/xml/export-$ver.xsd",
+			'version'            => $ver,
+			'xml:lang'           => $wgContLanguageCode ),
+			null ) .
+			"\n" .
+			$this->siteInfo();
+	}
+
+	function siteInfo() {
+		$info = array(
+			$this->sitename(),
+			$this->homelink(),
+			$this->generator(),
+			$this->caseSetting(),
+			$this->namespaces() );
+		return "  <siteinfo>\n    " .
+			implode( "\n    ", $info ) .
+			"\n  </siteinfo>\n";
+	}
+
+	function sitename() {
+		global $wgSitename;
+		return wfElement( 'sitename', array(), $wgSitename );
+	}
+
+	function generator() {
+		global $wgVersion;
+		return wfElement( 'generator', array(), "MediaWiki $wgVersion" );
+	}
+
+	function homelink() {
+		$page = Title::newFromText( wfMsgForContent( 'mainpage' ) );
+		return wfElement( 'base', array(), $page->getFullUrl() );
+	}
+
+	function caseSetting() {
+		global $wgCapitalLinks;
+		// "case-insensitive" option is reserved for future
+		$sensitivity = $wgCapitalLinks ? 'first-letter' : 'case-sensitive';
+		return wfElement( 'case', array(), $sensitivity );
+	}
+
+	function namespaces() {
+		global $wgContLang;
+		$spaces = "  <namespaces>\n";
+		foreach( $wgContLang->getFormattedNamespaces() as $ns => $title ) {
+			$spaces .= '      ' . wfElement( 'namespace', array( 'key' => $ns ), $title ) . "\n";
+		}
+		$spaces .= "    </namespaces>";
+		return $spaces;
+	}
+
+	/**
+	 * Closes the output stream with the closing root element.
+	 * Call when finished dumping things.
+	 */
+	function closeStream() {
+		return "</mediawiki>\n";
+	}
+
+
+	/**
+	 * Opens a <page> section on the output stream, with data
+	 * from the given database row.
+	 *
+	 * @param object $row
+	 * @return string
+	 * @access private
+	 */
+	function openPage( $row ) {
+		$out = "  <page>\n";
+		$title = Title::makeTitle( $row->page_namespace, $row->page_title );
+		$out .= '    ' . wfElementClean( 'title', array(), $title->getPrefixedText() ) . "\n";
+		$out .= '    ' . wfElement( 'id', array(), strval( $row->page_id ) ) . "\n";
+		if( '' != $row->page_restrictions ) {
+			$out .= '    ' . wfElement( 'restrictions', array(),
+				strval( $row->page_restrictions ) ) . "\n";
+		}
+		return $out;
+	}
+
+	/**
+	 * Closes a <page> section on the output stream.
+	 *
+	 * @access private
+	 */
+	function closePage() {
+		return "  </page>\n";
+	}
+
+	/**
+	 * Dumps a <revision> section on the output stream, with
+	 * data filled in from the given database row.
+	 *
+	 * @param object $row
+	 * @return string
+	 * @access private
+	 */
+	function writeRevision( $row ) {
+		$fname = 'WikiExporter::dumpRev';
+		wfProfileIn( $fname );
+
+		$out  = "    <revision>\n";
+		$out .= "      " . wfElement( 'id', null, strval( $row->rev_id ) ) . "\n";
+
+		$ts = wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
+		$out .= "      " . wfElement( 'timestamp', null, $ts ) . "\n";
+
+		if( $row->rev_deleted & Revision::DELETED_USER ) {
+			$out .= "      " . wfElement( 'contributor', array( 'deleted' => 'deleted' ) ) . "\n";
+		} else {
+			$out .= "      <contributor>\n";
+			if( $row->rev_user ) {
+				$out .= "        " . wfElementClean( 'username', null, strval( $row->rev_user_text ) ) . "\n";
+				$out .= "        " . wfElement( 'id', null, strval( $row->rev_user ) ) . "\n";
+			} else {
+				$out .= "        " . wfElementClean( 'ip', null, strval( $row->rev_user_text ) ) . "\n";
+			}
+			$out .= "      </contributor>\n";
+		}
+
+		if( $row->rev_minor_edit ) {
+			$out .=  "      <minor/>\n";
+		}
+		if( $row->rev_deleted & Revision::DELETED_COMMENT ) {
+			$out .= "      " . wfElement( 'comment', array( 'deleted' => 'deleted' ) ) . "\n";
+		} elseif( $row->rev_comment != '' ) {
+			$out .= "      " . wfElementClean( 'comment', null, strval( $row->rev_comment ) ) . "\n";
+		}
+
+		if( $row->rev_deleted & Revision::DELETED_TEXT ) {
+			$out .= "      " . wfElement( 'text', array( 'deleted' => 'deleted' ) ) . "\n";
+		} elseif( isset( $row->old_text ) ) {
+			// Raw text from the database may have invalid chars
+			$text = strval( Revision::getRevisionText( $row ) );
+			$out .= "      " . wfElementClean( 'text',
+				array( 'xml:space' => 'preserve' ),
+				strval( $text ) ) . "\n";
+		} else {
+			// Stub output
+			$out .= "      " . wfElement( 'text',
+				array( 'id' => $row->rev_text_id ),
+				"" ) . "\n";
+		}
+
+		$out .= "    </revision>\n";
+
+		wfProfileOut( $fname );
+		return $out;
+	}
+
+}
+
+
+/**
+ * Base class for output stream; prints to stdout or buffer or whereever.
+ */
+class DumpOutput {
+	function writeOpenStream( $string ) {
+		$this->write( $string );
+	}
+
+	function writeCloseStream( $string ) {
+		$this->write( $string );
+	}
+
+	function writeOpenPage( $page, $string ) {
+		$this->write( $string );
+	}
+
+	function writeClosePage( $string ) {
+		$this->write( $string );
+	}
+
+	function writeRevision( $rev, $string ) {
+		$this->write( $string );
+	}
+
+	/**
+	 * Override to write to a different stream type.
+	 * @return bool
+	 */
+	function write( $string ) {
+		print $string;
+	}
+}
+
+/**
+ * Stream outputter to send data to a file.
+ */
+class DumpFileOutput extends DumpOutput {
+	var $handle;
+
+	function DumpFileOutput( $file ) {
+		$this->handle = fopen( $file, "wt" );
+	}
+
+	function write( $string ) {
+		fputs( $this->handle, $string );
+	}
+}
+
+/**
+ * Stream outputter to send data to a file via some filter program.
+ * Even if compression is available in a library, using a separate
+ * program can allow us to make use of a multi-processor system.
+ */
+class DumpPipeOutput extends DumpFileOutput {
+	function DumpPipeOutput( $command, $file = null ) {
+		if( !is_null( $file ) ) {
+			$command .=  " > " . wfEscapeShellArg( $file );
+		}
+		$this->handle = popen( $command, "w" );
+	}
+}
+
+/**
+ * Sends dump output via the gzip compressor.
+ */
+class DumpGZipOutput extends DumpPipeOutput {
+	function DumpGZipOutput( $file ) {
+		parent::DumpPipeOutput( "gzip", $file );
+	}
+}
+
+/**
+ * Sends dump output via the bgzip2 compressor.
+ */
+class DumpBZip2Output extends DumpPipeOutput {
+	function DumpBZip2Output( $file ) {
+		parent::DumpPipeOutput( "bzip2", $file );
+	}
+}
+
+/**
+ * Sends dump output via the p7zip compressor.
+ */
+class Dump7ZipOutput extends DumpPipeOutput {
+	function Dump7ZipOutput( $file ) {
+		$command = "7za a -bd -si " . wfEscapeShellArg( $file );
+		// Suppress annoying useless crap from p7zip
+		// Unfortunately this could suppress real error messages too
+		$command .= " >/dev/null 2>&1";
+		parent::DumpPipeOutput( $command );
+	}
+}
+
+
+
+/**
+ * Dump output filter class.
+ * This just does output filtering and streaming; XML formatting is done
+ * higher up, so be careful in what you do.
+ */
+class DumpFilter {
+	function DumpFilter( &$sink ) {
+		$this->sink =& $sink;
+	}
+
+	function writeOpenStream( $string ) {
+		$this->sink->writeOpenStream( $string );
+	}
+
+	function writeCloseStream( $string ) {
+		$this->sink->writeCloseStream( $string );
+	}
+
+	function writeOpenPage( $page, $string ) {
+		$this->sendingThisPage = $this->pass( $page, $string );
+		if( $this->sendingThisPage ) {
+			$this->sink->writeOpenPage( $page, $string );
+		}
+	}
+
+	function writeClosePage( $string ) {
+		if( $this->sendingThisPage ) {
+			$this->sink->writeClosePage( $string );
+			$this->sendingThisPage = false;
+		}
+	}
+
+	function writeRevision( $rev, $string ) {
+		if( $this->sendingThisPage ) {
+			$this->sink->writeRevision( $rev, $string );
+		}
+	}
+
+	/**
+	 * Override for page-based filter types.
+	 * @return bool
+	 */
+	function pass( $page, $string ) {
+		return true;
+	}
+}
+
+/**
+ * Simple dump output filter to exclude all talk pages.
+ */
+class DumpNotalkFilter extends DumpFilter {
+	function pass( $page ) {
+		return !Namespace::isTalk( $page->page_namespace );
+	}
+}
+
+/**
+ * Dump output filter to include or exclude pages in a given set of namespaces.
+ */
+class DumpNamespaceFilter extends DumpFilter {
+	var $invert = false;
+	var $namespaces = array();
+
+	function DumpNamespaceFilter( &$sink, $param ) {
+		parent::DumpFilter( $sink );
+
+		$constants = array(
+			"NS_MAIN"           => NS_MAIN,
+			"NS_TALK"           => NS_TALK,
+			"NS_USER"           => NS_USER,
+			"NS_USER_TALK"      => NS_USER_TALK,
+			"NS_PROJECT"        => NS_PROJECT,
+			"NS_PROJECT_TALK"   => NS_PROJECT_TALK,
+			"NS_IMAGE"          => NS_IMAGE,
+			"NS_IMAGE_TALK"     => NS_IMAGE_TALK,
+			"NS_MEDIAWIKI"      => NS_MEDIAWIKI,
+			"NS_MEDIAWIKI_TALK" => NS_MEDIAWIKI_TALK,
+			"NS_TEMPLATE"       => NS_TEMPLATE,
+			"NS_TEMPLATE_TALK"  => NS_TEMPLATE_TALK,
+			"NS_HELP"           => NS_HELP,
+			"NS_HELP_TALK"      => NS_HELP_TALK,
+			"NS_CATEGORY"       => NS_CATEGORY,
+			"NS_CATEGORY_TALK"  => NS_CATEGORY_TALK );
+
+		if( $param{0} == '!' ) {
+			$this->invert = true;
+			$param = substr( $param, 1 );
+		}
+
+		foreach( explode( ',', $param ) as $key ) {
+			$key = trim( $key );
+			if( isset( $constants[$key] ) ) {
+				$ns = $constants[$key];
+				$this->namespaces[$ns] = true;
+			} elseif( is_numeric( $key ) ) {
+				$ns = intval( $key );
+				$this->namespaces[$ns] = true;
+			} else {
+				throw new MWException( "Unrecognized namespace key '$key'\n" );
+			}
+		}
+	}
+
+	function pass( $page ) {
+		$match = isset( $this->namespaces[$page->page_namespace] );
+		return $this->invert xor $match;
+	}
+}
+
+
+/**
+ * Dump output filter to include only the last revision in each page sequence.
+ */
+class DumpLatestFilter extends DumpFilter {
+	var $page, $pageString, $rev, $revString;
+
+	function writeOpenPage( $page, $string ) {
+		$this->page = $page;
+		$this->pageString = $string;
+	}
+
+	function writeClosePage( $string ) {
+		if( $this->rev ) {
+			$this->sink->writeOpenPage( $this->page, $this->pageString );
+			$this->sink->writeRevision( $this->rev, $this->revString );
+			$this->sink->writeClosePage( $string );
+		}
+		$this->rev = null;
+		$this->revString = null;
+		$this->page = null;
+		$this->pageString = null;
+	}
+
+	function writeRevision( $rev, $string ) {
+		if( $rev->rev_id == $this->page->page_latest ) {
+			$this->rev = $rev;
+			$this->revString = $string;
+		}
+	}
+}
+
+/**
+ * Base class for output stream; prints to stdout or buffer or whereever.
+ */
+class DumpMultiWriter {
+	function DumpMultiWriter( $sinks ) {
+		$this->sinks = $sinks;
+		$this->count = count( $sinks );
+	}
+
+	function writeOpenStream( $string ) {
+		for( $i = 0; $i < $this->count; $i++ ) {
+			$this->sinks[$i]->writeOpenStream( $string );
+		}
+	}
+
+	function writeCloseStream( $string ) {
+		for( $i = 0; $i < $this->count; $i++ ) {
+			$this->sinks[$i]->writeCloseStream( $string );
+		}
+	}
+
+	function writeOpenPage( $page, $string ) {
+		for( $i = 0; $i < $this->count; $i++ ) {
+			$this->sinks[$i]->writeOpenPage( $page, $string );
+		}
+	}
+
+	function writeClosePage( $string ) {
+		for( $i = 0; $i < $this->count; $i++ ) {
+			$this->sinks[$i]->writeClosePage( $string );
+		}
+	}
+
+	function writeRevision( $rev, $string ) {
+		for( $i = 0; $i < $this->count; $i++ ) {
+			$this->sinks[$i]->writeRevision( $rev, $string );
+		}
+	}
+}
+
+function xmlsafe( $string ) {
+	$fname = 'xmlsafe';
+	wfProfileIn( $fname );
+
+	/**
+	 * The page may contain old data which has not been properly normalized.
+	 * Invalid UTF-8 sequences or forbidden control characters will make our
+	 * XML output invalid, so be sure to strip them out.
+	 */
+	$string = UtfNormal::cleanUp( $string );
+
+	$string = htmlspecialchars( $string );
+	wfProfileOut( $fname );
+	return $string;
+}
+
+?>