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mediawiki_ynh/sources/mediawiki/includes/api/ApiQueryImageInfo.php

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<?php
/**
*
*
* Created on July 6, 2007
*
* Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
*
* 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
*/
/**
* A query action to get image information and upload history.
*
* @ingroup API
*/
class ApiQueryImageInfo extends ApiQueryBase {
const TRANSFORM_LIMIT = 50;
private static $transformCount = 0;
public function __construct( $query, $moduleName, $prefix = 'ii' ) {
// We allow a subclass to override the prefix, to create a related API module.
// Some other parts of MediaWiki construct this with a null $prefix, which used to be ignored when this only took two arguments
if ( is_null( $prefix ) ) {
$prefix = 'ii';
}
parent::__construct( $query, $moduleName, $prefix );
}
public function execute() {
$params = $this->extractRequestParams();
$prop = array_flip( $params['prop'] );
$scale = $this->getScale( $params );
$pageIds = $this->getPageSet()->getAllTitlesByNamespace();
if ( !empty( $pageIds[NS_FILE] ) ) {
$titles = array_keys( $pageIds[NS_FILE] );
asort( $titles ); // Ensure the order is always the same
$fromTitle = null;
if ( !is_null( $params['continue'] ) ) {
$cont = explode( '|', $params['continue'] );
$this->dieContinueUsageIf( count( $cont ) != 2 );
$fromTitle = strval( $cont[0] );
$fromTimestamp = $cont[1];
// Filter out any titles before $fromTitle
foreach ( $titles as $key => $title ) {
if ( $title < $fromTitle ) {
unset( $titles[$key] );
} else {
break;
}
}
}
$result = $this->getResult();
//search only inside the local repo
if ( $params['localonly'] ) {
$images = RepoGroup::singleton()->getLocalRepo()->findFiles( $titles );
} else {
$images = RepoGroup::singleton()->findFiles( $titles );
}
foreach ( $titles as $title ) {
$pageId = $pageIds[NS_FILE][$title];
$start = $title === $fromTitle ? $fromTimestamp : $params['start'];
if ( !isset( $images[$title] ) ) {
if ( isset( $prop['uploadwarning'] ) ) {
// Uploadwarning needs info about non-existing files
$images[$title] = wfLocalFile( $title );
} else {
$result->addValue(
array( 'query', 'pages', intval( $pageId ) ),
'imagerepository', ''
);
// The above can't fail because it doesn't increase the result size
continue;
}
}
/** @var $img File */
$img = $images[$title];
if ( self::getTransformCount() >= self::TRANSFORM_LIMIT ) {
if ( count( $pageIds[NS_FILE] ) == 1 ) {
// See the 'the user is screwed' comment below
$this->setContinueEnumParameter( 'start',
$start !== null ? $start : wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
);
} else {
$this->setContinueEnumParameter( 'continue',
$this->getContinueStr( $img, $start ) );
}
break;
}
$fit = $result->addValue(
array( 'query', 'pages', intval( $pageId ) ),
'imagerepository', $img->getRepoName()
);
if ( !$fit ) {
if ( count( $pageIds[NS_FILE] ) == 1 ) {
// The user is screwed. imageinfo can't be solely
// responsible for exceeding the limit in this case,
// so set a query-continue that just returns the same
// thing again. When the violating queries have been
// out-continued, the result will get through
$this->setContinueEnumParameter( 'start',
$start !== null ? $start : wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
);
} else {
$this->setContinueEnumParameter( 'continue',
$this->getContinueStr( $img, $start ) );
}
break;
}
// Check if we can make the requested thumbnail, and get transform parameters.
$finalThumbParams = $this->mergeThumbParams( $img, $scale, $params['urlparam'] );
// Get information about the current version first
// Check that the current version is within the start-end boundaries
$gotOne = false;
if (
( is_null( $start ) || $img->getTimestamp() <= $start ) &&
( is_null( $params['end'] ) || $img->getTimestamp() >= $params['end'] )
) {
$gotOne = true;
$fit = $this->addPageSubItem( $pageId,
self::getInfo( $img, $prop, $result,
$finalThumbParams, $params['metadataversion'] ) );
if ( !$fit ) {
if ( count( $pageIds[NS_FILE] ) == 1 ) {
// See the 'the user is screwed' comment above
$this->setContinueEnumParameter( 'start',
wfTimestamp( TS_ISO_8601, $img->getTimestamp() ) );
} else {
$this->setContinueEnumParameter( 'continue',
$this->getContinueStr( $img ) );
}
break;
}
}
// Now get the old revisions
// Get one more to facilitate query-continue functionality
$count = ( $gotOne ? 1 : 0 );
$oldies = $img->getHistory( $params['limit'] - $count + 1, $start, $params['end'] );
/** @var $oldie File */
foreach ( $oldies as $oldie ) {
if ( ++$count > $params['limit'] ) {
// We've reached the extra one which shows that there are additional pages to be had. Stop here...
// Only set a query-continue if there was only one title
if ( count( $pageIds[NS_FILE] ) == 1 ) {
$this->setContinueEnumParameter( 'start',
wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
}
break;
}
$fit = self::getTransformCount() < self::TRANSFORM_LIMIT &&
$this->addPageSubItem( $pageId,
self::getInfo( $oldie, $prop, $result,
$finalThumbParams, $params['metadataversion']
)
);
if ( !$fit ) {
if ( count( $pageIds[NS_FILE] ) == 1 ) {
$this->setContinueEnumParameter( 'start',
wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
} else {
$this->setContinueEnumParameter( 'continue',
$this->getContinueStr( $oldie ) );
}
break;
}
}
if ( !$fit ) {
break;
}
}
}
}
/**
* From parameters, construct a 'scale' array
* @param array $params Parameters passed to api.
* @return Array or Null: key-val array of 'width' and 'height', or null
*/
public function getScale( $params ) {
$p = $this->getModulePrefix();
if ( $params['urlwidth'] != -1 ) {
$scale = array();
$scale['width'] = $params['urlwidth'];
$scale['height'] = $params['urlheight'];
} elseif ( $params['urlheight'] != -1 ) {
// Height is specified but width isn't
// Don't set $scale['width']; this signals mergeThumbParams() to fill it with the image's width
$scale = array();
$scale['height'] = $params['urlheight'];
} else {
$scale = null;
if ( $params['urlparam'] ) {
$this->dieUsage( "{$p}urlparam requires {$p}urlwidth", "urlparam_no_width" );
}
}
return $scale;
}
/** Validate and merge scale parameters with handler thumb parameters, give error if invalid.
*
* We do this later than getScale, since we need the image
* to know which handler, since handlers can make their own parameters.
* @param File $image Image that params are for.
* @param array $thumbParams thumbnail parameters from getScale
* @param string $otherParams of otherParams (iiurlparam).
* @return Array of parameters for transform.
*/
protected function mergeThumbParams( $image, $thumbParams, $otherParams ) {
global $wgThumbLimits;
if ( !isset( $thumbParams['width'] ) && isset( $thumbParams['height'] ) ) {
// We want to limit only by height in this situation, so pass the
// image's full width as the limiting width. But some file types
// don't have a width of their own, so pick something arbitrary so
// thumbnailing the default icon works.
if ( $image->getWidth() <= 0 ) {
$thumbParams['width'] = max( $wgThumbLimits );
} else {
$thumbParams['width'] = $image->getWidth();
}
}
if ( !$otherParams ) {
return $thumbParams;
}
$p = $this->getModulePrefix();
$h = $image->getHandler();
if ( !$h ) {
$this->setWarning( 'Could not create thumbnail because ' .
$image->getName() . ' does not have an associated image handler' );
return $thumbParams;
}
$paramList = $h->parseParamString( $otherParams );
if ( !$paramList ) {
// Just set a warning (instead of dieUsage), as in many cases
// we could still render the image using width and height parameters,
// and this type of thing could happen between different versions of
// handlers.
$this->setWarning( "Could not parse {$p}urlparam for " . $image->getName()
. '. Using only width and height' );
return $thumbParams;
}
if ( isset( $paramList['width'] ) ) {
if ( intval( $paramList['width'] ) != intval( $thumbParams['width'] ) ) {
$this->setWarning( "Ignoring width value set in {$p}urlparam ({$paramList['width']}) "
. "in favor of width value derived from {$p}urlwidth/{$p}urlheight ({$thumbParams['width']})" );
}
}
foreach ( $paramList as $name => $value ) {
if ( !$h->validateParam( $name, $value ) ) {
$this->dieUsage( "Invalid value for {$p}urlparam ($name=$value)", "urlparam" );
}
}
return $thumbParams + $paramList;
}
/**
* Get result information for an image revision
*
* @param $file File object
* @param array $prop of properties to get (in the keys)
* @param $result ApiResult object
* @param array $thumbParams containing 'width' and 'height' items, or null
* @param string $version Version of image metadata (for things like jpeg which have different versions).
* @return Array: result array
*/
static function getInfo( $file, $prop, $result, $thumbParams = null, $version = 'latest' ) {
$vals = array();
// Timestamp is shown even if the file is revdelete'd in interface
// so do same here.
if ( isset( $prop['timestamp'] ) ) {
$vals['timestamp'] = wfTimestamp( TS_ISO_8601, $file->getTimestamp() );
}
$user = isset( $prop['user'] );
$userid = isset( $prop['userid'] );
if ( $user || $userid ) {
if ( $file->isDeleted( File::DELETED_USER ) ) {
$vals['userhidden'] = '';
} else {
if ( $user ) {
$vals['user'] = $file->getUser();
}
if ( $userid ) {
$vals['userid'] = $file->getUser( 'id' );
}
if ( !$file->getUser( 'id' ) ) {
$vals['anon'] = '';
}
}
}
// This is shown even if the file is revdelete'd in interface
// so do same here.
if ( isset( $prop['size'] ) || isset( $prop['dimensions'] ) ) {
$vals['size'] = intval( $file->getSize() );
$vals['width'] = intval( $file->getWidth() );
$vals['height'] = intval( $file->getHeight() );
$pageCount = $file->pageCount();
if ( $pageCount !== false ) {
$vals['pagecount'] = $pageCount;
}
}
$pcomment = isset( $prop['parsedcomment'] );
$comment = isset( $prop['comment'] );
if ( $pcomment || $comment ) {
if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
$vals['commenthidden'] = '';
} else {
if ( $pcomment ) {
$vals['parsedcomment'] = Linker::formatComment(
$file->getDescription(), $file->getTitle() );
}
if ( $comment ) {
$vals['comment'] = $file->getDescription();
}
}
}
$url = isset( $prop['url'] );
$sha1 = isset( $prop['sha1'] );
$meta = isset( $prop['metadata'] );
$mime = isset( $prop['mime'] );
$mediatype = isset( $prop['mediatype'] );
$archive = isset( $prop['archivename'] );
$bitdepth = isset( $prop['bitdepth'] );
$uploadwarning = isset( $prop['uploadwarning'] );
if ( ( $url || $sha1 || $meta || $mime || $mediatype || $archive || $bitdepth )
&& $file->isDeleted( File::DELETED_FILE ) ) {
$vals['filehidden'] = '';
//Early return, tidier than indenting all following things one level
return $vals;
}
if ( $url ) {
if ( !is_null( $thumbParams ) ) {
$mto = $file->transform( $thumbParams );
self::$transformCount++;
if ( $mto && !$mto->isError() ) {
$vals['thumburl'] = wfExpandUrl( $mto->getUrl(), PROTO_CURRENT );
// bug 23834 - If the URL's are the same, we haven't resized it, so shouldn't give the wanted
// thumbnail sizes for the thumbnail actual size
if ( $mto->getUrl() !== $file->getUrl() ) {
$vals['thumbwidth'] = intval( $mto->getWidth() );
$vals['thumbheight'] = intval( $mto->getHeight() );
} else {
$vals['thumbwidth'] = intval( $file->getWidth() );
$vals['thumbheight'] = intval( $file->getHeight() );
}
if ( isset( $prop['thumbmime'] ) && $file->getHandler() ) {
list( , $mime ) = $file->getHandler()->getThumbType(
$mto->getExtension(), $file->getMimeType(), $thumbParams );
$vals['thumbmime'] = $mime;
}
} elseif ( $mto && $mto->isError() ) {
$vals['thumberror'] = $mto->toText();
}
}
$vals['url'] = wfExpandUrl( $file->getFullURL(), PROTO_CURRENT );
$vals['descriptionurl'] = wfExpandUrl( $file->getDescriptionUrl(), PROTO_CURRENT );
}
if ( $sha1 ) {
$vals['sha1'] = wfBaseConvert( $file->getSha1(), 36, 16, 40 );
}
if ( $meta ) {
wfSuppressWarnings();
$metadata = unserialize( $file->getMetadata() );
wfRestoreWarnings();
if ( $metadata && $version !== 'latest' ) {
$metadata = $file->convertMetadataVersion( $metadata, $version );
}
$vals['metadata'] = $metadata ? self::processMetaData( $metadata, $result ) : null;
}
if ( $mime ) {
$vals['mime'] = $file->getMimeType();
}
if ( $mediatype ) {
$vals['mediatype'] = $file->getMediaType();
}
if ( $archive && $file->isOld() ) {
$vals['archivename'] = $file->getArchiveName();
}
if ( $bitdepth ) {
$vals['bitdepth'] = $file->getBitDepth();
}
if ( $uploadwarning ) {
$vals['html'] = SpecialUpload::getExistsWarning( UploadBase::getExistsWarning( $file ) );
}
return $vals;
}
/**
* Get the count of image transformations performed
*
* If this is >= TRANSFORM_LIMIT, you should probably stop processing images.
*
* @return integer count
*/
static function getTransformCount() {
return self::$transformCount;
}
/**
*
* @param $metadata Array
* @param $result ApiResult
* @return Array
*/
public static function processMetaData( $metadata, $result ) {
$retval = array();
if ( is_array( $metadata ) ) {
foreach ( $metadata as $key => $value ) {
$r = array( 'name' => $key );
if ( is_array( $value ) ) {
$r['value'] = self::processMetaData( $value, $result );
} else {
$r['value'] = $value;
}
$retval[] = $r;
}
}
$result->setIndexedTagName( $retval, 'metadata' );
return $retval;
}
public function getCacheMode( $params ) {
return 'public';
}
/**
* @param $img File
* @param null|string $start
* @return string
*/
protected function getContinueStr( $img, $start = null ) {
if ( $start === null ) {
$start = $img->getTimestamp();
}
return $img->getOriginalTitle()->getDBkey() . '|' . $start;
}
public function getAllowedParams() {
return array(
'prop' => array(
ApiBase::PARAM_ISMULTI => true,
ApiBase::PARAM_DFLT => 'timestamp|user',
ApiBase::PARAM_TYPE => self::getPropertyNames()
),
'limit' => array(
ApiBase::PARAM_TYPE => 'limit',
ApiBase::PARAM_DFLT => 1,
ApiBase::PARAM_MIN => 1,
ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
),
'start' => array(
ApiBase::PARAM_TYPE => 'timestamp'
),
'end' => array(
ApiBase::PARAM_TYPE => 'timestamp'
),
'urlwidth' => array(
ApiBase::PARAM_TYPE => 'integer',
ApiBase::PARAM_DFLT => -1
),
'urlheight' => array(
ApiBase::PARAM_TYPE => 'integer',
ApiBase::PARAM_DFLT => -1
),
'metadataversion' => array(
ApiBase::PARAM_TYPE => 'string',
ApiBase::PARAM_DFLT => '1',
),
'urlparam' => array(
ApiBase::PARAM_DFLT => '',
ApiBase::PARAM_TYPE => 'string',
),
'continue' => null,
'localonly' => false,
);
}
/**
* Returns all possible parameters to iiprop
*
* @param array $filter List of properties to filter out
*
* @return Array
*/
public static function getPropertyNames( $filter = array() ) {
return array_diff( array_keys( self::getProperties() ), $filter );
}
/**
* Returns array key value pairs of properties and their descriptions
*
* @param string $modulePrefix
* @return array
*/
private static function getProperties( $modulePrefix = '' ) {
return array(
'timestamp' => ' timestamp - Adds timestamp for the uploaded version',
'user' => ' user - Adds the user who uploaded the image version',
'userid' => ' userid - Add the user ID that uploaded the image version',
'comment' => ' comment - Comment on the version',
'parsedcomment' => ' parsedcomment - Parse the comment on the version',
'url' => ' url - Gives URL to the image and the description page',
'size' => ' size - Adds the size of the image in bytes and the height, width and page count (if applicable)',
'dimensions' => ' dimensions - Alias for size', // For backwards compatibility with Allimages
'sha1' => ' sha1 - Adds SHA-1 hash for the image',
'mime' => ' mime - Adds MIME type of the image',
'thumbmime' => ' thumbmime - Adds MIME type of the image thumbnail' .
' (requires url and param ' . $modulePrefix . 'urlwidth)',
'mediatype' => ' mediatype - Adds the media type of the image',
'metadata' => ' metadata - Lists Exif metadata for the version of the image',
'archivename' => ' archivename - Adds the file name of the archive version for non-latest versions',
'bitdepth' => ' bitdepth - Adds the bit depth of the version',
'uploadwarning' => ' uploadwarning - Used by the Special:Upload page to get information about an existing file. Not intended for use outside MediaWiki core',
);
}
/**
* Returns the descriptions for the properties provided by getPropertyNames()
*
* @param array $filter List of properties to filter out
* @param string $modulePrefix
* @return array
*/
public static function getPropertyDescriptions( $filter = array(), $modulePrefix = '' ) {
return array_merge(
array( 'What image information to get:' ),
array_values( array_diff_key( self::getProperties( $modulePrefix ), array_flip( $filter ) ) )
);
}
/**
* Return the API documentation for the parameters.
* @return Array parameter documentation.
*/
public function getParamDescription() {
$p = $this->getModulePrefix();
return array(
'prop' => self::getPropertyDescriptions( array(), $p ),
'urlwidth' => array( "If {$p}prop=url is set, a URL to an image scaled to this width will be returned.",
'For performance reasons if this option is used, ' .
'no more than ' . self::TRANSFORM_LIMIT . ' scaled images will be returned.' ),
'urlheight' => "Similar to {$p}urlwidth.",
'urlparam' => array( "A handler specific parameter string. For example, pdf's ",
"might use 'page15-100px'. {$p}urlwidth must be used and be consistent with {$p}urlparam" ),
'limit' => 'How many image revisions to return per image',
'start' => 'Timestamp to start listing from',
'end' => 'Timestamp to stop listing at',
'metadataversion' => array( "Version of metadata to use. if 'latest' is specified, use latest version.",
"Defaults to '1' for backwards compatibility" ),
'continue' => 'If the query response includes a continue value, use it here to get another page of results',
'localonly' => 'Look only for files in the local repository',
);
}
public static function getResultPropertiesFiltered( $filter = array() ) {
$props = array(
'timestamp' => array(
'timestamp' => 'timestamp'
),
'user' => array(
'userhidden' => 'boolean',
'user' => 'string',
'anon' => 'boolean'
),
'userid' => array(
'userhidden' => 'boolean',
'userid' => 'integer',
'anon' => 'boolean'
),
'size' => array(
'size' => 'integer',
'width' => 'integer',
'height' => 'integer',
'pagecount' => array(
ApiBase::PROP_TYPE => 'integer',
ApiBase::PROP_NULLABLE => true
)
),
'dimensions' => array(
'size' => 'integer',
'width' => 'integer',
'height' => 'integer',
'pagecount' => array(
ApiBase::PROP_TYPE => 'integer',
ApiBase::PROP_NULLABLE => true
)
),
'comment' => array(
'commenthidden' => 'boolean',
'comment' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'parsedcomment' => array(
'commenthidden' => 'boolean',
'parsedcomment' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'url' => array(
'filehidden' => 'boolean',
'thumburl' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
),
'thumbwidth' => array(
ApiBase::PROP_TYPE => 'integer',
ApiBase::PROP_NULLABLE => true
),
'thumbheight' => array(
ApiBase::PROP_TYPE => 'integer',
ApiBase::PROP_NULLABLE => true
),
'thumberror' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
),
'url' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
),
'descriptionurl' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'sha1' => array(
'filehidden' => 'boolean',
'sha1' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'mime' => array(
'filehidden' => 'boolean',
'mime' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'thumbmime' => array(
'filehidden' => 'boolean',
'thumbmime' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'mediatype' => array(
'filehidden' => 'boolean',
'mediatype' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'archivename' => array(
'filehidden' => 'boolean',
'archivename' => array(
ApiBase::PROP_TYPE => 'string',
ApiBase::PROP_NULLABLE => true
)
),
'bitdepth' => array(
'filehidden' => 'boolean',
'bitdepth' => array(
ApiBase::PROP_TYPE => 'integer',
ApiBase::PROP_NULLABLE => true
)
),
);
return array_diff_key( $props, array_flip( $filter ) );
}
public function getResultProperties() {
return self::getResultPropertiesFiltered();
}
public function getDescription() {
return 'Returns image information and upload history';
}
public function getPossibleErrors() {
$p = $this->getModulePrefix();
return array_merge( parent::getPossibleErrors(), array(
array( 'code' => "{$p}urlwidth", 'info' => "{$p}urlheight cannot be used without {$p}urlwidth" ),
array( 'code' => 'urlparam', 'info' => "Invalid value for {$p}urlparam" ),
array( 'code' => 'urlparam_no_width', 'info' => "{$p}urlparam requires {$p}urlwidth" ),
) );
}
public function getExamples() {
return array(
'api.php?action=query&titles=File:Albert%20Einstein%20Head.jpg&prop=imageinfo',
'api.php?action=query&titles=File:Test.jpg&prop=imageinfo&iilimit=50&iiend=20071231235959&iiprop=timestamp|user|url',
);
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/API:Properties#imageinfo_.2F_ii';
}
}
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