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-rw-r--r--img_auth.php138
1 files changed, 91 insertions, 47 deletions
diff --git a/img_auth.php b/img_auth.php
index c8759ec8..dcd171f9 100644
--- a/img_auth.php
+++ b/img_auth.php
@@ -2,7 +2,7 @@
/**
* Image authorisation script
*
- * To use this, see http://www.mediawiki.org/wiki/Manual:Image_Authorization
+ * To use this, see https://www.mediawiki.org/wiki/Manual:Image_Authorization
*
* - Set $wgUploadDirectory to a non-public directory (not web accessible)
* - Set $wgUploadPath to point to this file
@@ -12,8 +12,6 @@
* - Set $wgImgAuthDetails = true if you want the reason the access was denied messages to
* be displayed instead of just the 403 error (doesn't work on IE anyway),
* otherwise it will only appear in error logs
- * - Set $wgImgAuthPublicTest false if you don't want to just check and see if all are public
- * must be set to false if using specific restrictions such as LockDown or NSFileRepo
*
* For security reasons, you usually don't want your user to know *why* access was denied,
* just that it was. If you want to change this, you can set $wgImgAuthDetails to 'true'
@@ -49,19 +47,18 @@ $wgArticlePath = false; # Don't let a "/*" article path clober our action path
$wgActionPaths = array( "$wgUploadPath/" );
wfImageAuthMain();
+wfProfileOut( 'img_auth.php' );
wfLogProfilingData();
+// Commit and close up!
+$factory = wfGetLBFactory();
+$factory->commitMasterChanges();
+$factory->shutdown();
function wfImageAuthMain() {
- global $wgImgAuthPublicTest, $wgRequest;
-
- // See if this is a public Wiki (no protections).
- if ( $wgImgAuthPublicTest
- && in_array( 'read', User::getGroupPermissions( array( '*' ) ), true )
- ) {
- // This is a public wiki, so disable this script (for private wikis only)
- wfForbidden( 'img-auth-accessdenied', 'img-auth-public' );
- return;
- }
+ global $wgImgAuthUrlPathMap;
+
+ $request = RequestContext::getMain()->getRequest();
+ $publicWiki = in_array( 'read', User::getGroupPermissions( array( '*' ) ), true );
// Get the requested file path (source file or thumbnail)
$matches = WebRequest::getPathInfo();
@@ -77,67 +74,113 @@ function wfImageAuthMain() {
// Check for bug 28235: QUERY_STRING overriding the correct extension
$whitelist = array();
- $dotPos = strrpos( $path, '.' );
- if ( $dotPos !== false ) {
- $whitelist[] = substr( $path, $dotPos + 1 );
+ $extension = FileBackend::extensionFromPath( $path, 'rawcase' );
+ if ( $extension != '' ) {
+ $whitelist[] = $extension;
}
- if ( !$wgRequest->checkUrlExtension( $whitelist ) ) {
+ if ( !$request->checkUrlExtension( $whitelist ) ) {
return;
}
+ // Various extensions may have their own backends that need access.
+ // Check if there is a special backend and storage base path for this file.
+ foreach ( $wgImgAuthUrlPathMap as $prefix => $storageDir ) {
+ $prefix = rtrim( $prefix, '/' ) . '/'; // implicit trailing slash
+ if ( strpos( $path, $prefix ) === 0 ) {
+ $be = FileBackendGroup::singleton()->backendFromPath( $storageDir );
+ $filename = $storageDir . substr( $path, strlen( $prefix ) ); // strip prefix
+ // Check basic user authorization
+ if ( !RequestContext::getMain()->getUser()->isAllowed( 'read' ) ) {
+ wfForbidden( 'img-auth-accessdenied', 'img-auth-noread', $path );
+ return;
+ }
+ if ( $be->fileExists( array( 'src' => $filename ) ) ) {
+ wfDebugLog( 'img_auth', "Streaming `" . $filename . "`." );
+ $be->streamFile( array( 'src' => $filename ),
+ array( 'Cache-Control: private', 'Vary: Cookie' ) );
+ } else {
+ wfForbidden( 'img-auth-accessdenied', 'img-auth-nofile', $path );
+ }
+ return;
+ }
+ }
+
// Get the local file repository
$repo = RepoGroup::singleton()->getRepo( 'local' );
+ $zone = strstr( ltrim( $path, '/' ), '/', true );
// Get the full file storage path and extract the source file name.
// (e.g. 120px-Foo.png => Foo.png or page2-120px-Foo.png => Foo.png).
- // This only applies to thumbnails, and all thumbnails should
+ // This only applies to thumbnails/transcoded, and each of them should
// be under a folder that has the source file name.
- if ( strpos( $path, '/thumb/' ) === 0 ) {
- $name = wfBaseName( dirname( $path ) ); // file is a thumbnail
- $filename = $repo->getZonePath( 'thumb' ) . substr( $path, 6 ); // strip "/thumb"
+ if ( $zone === 'thumb' || $zone === 'transcoded' ) {
+ $name = wfBaseName( dirname( $path ) );
+ $filename = $repo->getZonePath( $zone ) . substr( $path, strlen( "/" . $zone ) );
+ // Check to see if the file exists
+ if ( !$repo->fileExists( $filename ) ) {
+ wfForbidden( 'img-auth-accessdenied', 'img-auth-nofile', $filename );
+ return;
+ }
} else {
$name = wfBaseName( $path ); // file is a source file
$filename = $repo->getZonePath( 'public' ) . $path;
+ // Check to see if the file exists and is not deleted
+ $bits = explode( '!', $name, 2 );
+ if ( substr( $path, 0, 9 ) === '/archive/' && count( $bits ) == 2 ) {
+ $file = $repo->newFromArchiveName( $bits[1], $name );
+ } else {
+ $file = $repo->newFile( $name );
+ }
+ if ( !$file->exists() || $file->isDeleted( File::DELETED_FILE ) ) {
+ wfForbidden( 'img-auth-accessdenied', 'img-auth-nofile', $filename );
+ return;
+ }
}
- // Check to see if the file exists
- if ( !$repo->fileExists( $filename ) ) {
- wfForbidden( 'img-auth-accessdenied', 'img-auth-nofile', $filename );
- return;
+ $headers = array(); // extra HTTP headers to send
+
+ if ( !$publicWiki ) {
+ // For private wikis, run extra auth checks and set cache control headers
+ $headers[] = 'Cache-Control: private';
+ $headers[] = 'Vary: Cookie';
+
+ $title = Title::makeTitleSafe( NS_FILE, $name );
+ if ( !$title instanceof Title ) { // files have valid titles
+ wfForbidden( 'img-auth-accessdenied', 'img-auth-badtitle', $name );
+ return;
+ }
+
+ // Run hook for extension authorization plugins
+ /** @var $result array */
+ $result = null;
+ if ( !wfRunHooks( 'ImgAuthBeforeStream', array( &$title, &$path, &$name, &$result ) ) ) {
+ wfForbidden( $result[0], $result[1], array_slice( $result, 2 ) );
+ return;
+ }
+
+ // Check user authorization for this title
+ // Checks Whitelist too
+ if ( !$title->userCan( 'read' ) ) {
+ wfForbidden( 'img-auth-accessdenied', 'img-auth-noread', $name );
+ return;
+ }
}
- $title = Title::makeTitleSafe( NS_FILE, $name );
- if ( !$title instanceof Title ) { // files have valid titles
- wfForbidden( 'img-auth-accessdenied', 'img-auth-badtitle', $name );
- return;
- }
-
- // Run hook for extension authorization plugins
- /** @var $result array */
- $result = null;
- if ( !wfRunHooks( 'ImgAuthBeforeStream', array( &$title, &$path, &$name, &$result ) ) ) {
- wfForbidden( $result[0], $result[1], array_slice( $result, 2 ) );
- return;
- }
-
- // Check user authorization for this title
- // Checks Whitelist too
- if ( !$title->userCan( 'read' ) ) {
- wfForbidden( 'img-auth-accessdenied', 'img-auth-noread', $name );
- return;
+ if ( $request->getCheck( 'download' ) ) {
+ $headers[] = 'Content-Disposition: attachment';
}
// Stream the requested file
wfDebugLog( 'img_auth', "Streaming `" . $filename . "`." );
- $repo->streamFile( $filename, array( 'Cache-Control: private', 'Vary: Cookie' ) );
+ $repo->streamFile( $filename, $headers );
}
/**
* Issue a standard HTTP 403 Forbidden header ($msg1-a message index, not a message) and an
* error message ($msg2, also a message index), (both required) then end the script
* subsequent arguments to $msg2 will be passed as parameters only for replacing in $msg2
- * @param $msg1
- * @param $msg2
+ * @param string $msg1
+ * @param string $msg2
*/
function wfForbidden( $msg1, $msg2 ) {
global $wgImgAuthDetails;
@@ -145,6 +188,7 @@ function wfForbidden( $msg1, $msg2 ) {
$args = func_get_args();
array_shift( $args );
array_shift( $args );
+ $args = ( isset( $args[0] ) && is_array( $args[0] ) ) ? $args[0] : $args;
$msgHdr = wfMessage( $msg1 )->escaped();
$detailMsgKey = $wgImgAuthDetails ? $msg2 : 'badaccess-group0';