jenkins-bot has submitted this change and it was merged. ( 
https://gerrit.wikimedia.org/r/367640 )

Change subject: Re-introduce use of mime_content_type()
......................................................................


Re-introduce use of mime_content_type()

Follows-up eac059c7224. See also https://stackoverflow.com/a/39676272/319266.

This function was never deprecated. For a short time, the www.php.net
manual page for `mime_content_type` wrongly documented it as having been
deprecated in PHP 5.3, but this wasn't true, and it has been present in
every PHP version since PHP 4.3, including PHP 7 and HHVM 2.3+.

Between PHP 4.3.0-4.3.2 and PHP 5.0-5.3, the function would be absent
if the Mimemagic extension was not enabled at compile-time. However, while
mime_content_type was first introduced by the Mimemagic PHP ext, it is
backend by the Finfo extension since PHP 5.3.0.

Confirmed via https://3v4l.org/IQC1Q.

* CSSMin: Revert conditional use of finfo back to unconditional use
  of mime_content_type.

* MimeAnalyzer: Replace conditional use of finfo with unconditional use
  use of mime_content_type. Also remove the now-redundant 'else' branch.
  The 'else' branch existed because this code was written at a time where
  MediaWiki still supported PHP 4, of which some minor versions could
  sometimes be compiled without this function.

Change-Id: Iee4a0b6f616a469bb779c40e386045f9c3200446
---
M includes/DefaultSettings.php
M includes/libs/CSSMin.php
M includes/libs/filebackend/FileBackendStore.php
M includes/libs/mime/MimeAnalyzer.php
4 files changed, 5 insertions(+), 31 deletions(-)

Approvals:
  Tim Starling: Looks good to me, approved
  jenkins-bot: Verified



diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index f35715e..74d5fa4 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -1304,7 +1304,7 @@
  * Sets an external MIME detector program. The command must print only
  * the MIME type to standard output.
  * The name of the file to process will be appended to the command given here.
- * If not set or NULL, PHP's fileinfo extension will be used if available.
+ * If not set or NULL, PHP's mime_content_type function will be used.
  *
  * @par Example:
  * @code
diff --git a/includes/libs/CSSMin.php b/includes/libs/CSSMin.php
index 9e060cd..4c672f4 100644
--- a/includes/libs/CSSMin.php
+++ b/includes/libs/CSSMin.php
@@ -188,17 +188,7 @@
                        return self::$mimeTypes[$ext];
                }
 
-               $realpath = realpath( $file );
-               if (
-                       $realpath
-                       && function_exists( 'finfo_file' )
-                       && function_exists( 'finfo_open' )
-                       && defined( 'FILEINFO_MIME_TYPE' )
-               ) {
-                       return finfo_file( finfo_open( FILEINFO_MIME_TYPE ), 
$realpath );
-               }
-
-               return false;
+               return mime_content_type( realpath( $file ) );
        }
 
        /**
diff --git a/includes/libs/filebackend/FileBackendStore.php 
b/includes/libs/filebackend/FileBackendStore.php
index 9bfdbe8..77473d1 100644
--- a/includes/libs/filebackend/FileBackendStore.php
+++ b/includes/libs/filebackend/FileBackendStore.php
@@ -1840,14 +1840,8 @@
                        return call_user_func_array( $this->mimeCallback, 
func_get_args() );
                }
 
-               $mime = null;
-               if ( $fsPath !== null && function_exists( 'finfo_file' ) ) {
-                       $finfo = finfo_open( FILEINFO_MIME_TYPE );
-                       $mime = finfo_file( $finfo, $fsPath );
-                       finfo_close( $finfo );
-               }
-
-               return is_string( $mime ) ? $mime : 'unknown/unknown';
+               $mime = ( $fsPath !== null ) ? mime_content_type( $fsPath ) : 
false;
+               return $mime ?: 'unknown/unknown';
        }
 }
 
diff --git a/includes/libs/mime/MimeAnalyzer.php 
b/includes/libs/mime/MimeAnalyzer.php
index 631bb17..4d860bb 100644
--- a/includes/libs/mime/MimeAnalyzer.php
+++ b/includes/libs/mime/MimeAnalyzer.php
@@ -988,18 +988,8 @@
                $m = null;
                if ( $callback ) {
                        $m = $callback( $file );
-               } elseif ( function_exists( "finfo_open" ) && function_exists( 
"finfo_file" ) ) {
-                       $mime_magic_resource = finfo_open( FILEINFO_MIME );
-
-                       if ( $mime_magic_resource ) {
-                               $m = finfo_file( $mime_magic_resource, $file );
-                               finfo_close( $mime_magic_resource );
-                       } else {
-                               $this->logger->info( __METHOD__ .
-                                       ": finfo_open failed on " . 
FILEINFO_MIME . "!\n" );
-                       }
                } else {
-                       $this->logger->info( __METHOD__ . ": no magic mime 
detector found!\n" );
+                       $m = mime_content_type( $file );
                }
 
                if ( $m ) {

-- 
To view, visit https://gerrit.wikimedia.org/r/367640
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: merged
Gerrit-Change-Id: Iee4a0b6f616a469bb779c40e386045f9c3200446
Gerrit-PatchSet: 4
Gerrit-Project: mediawiki/core
Gerrit-Branch: master
Gerrit-Owner: Krinkle <krinklem...@gmail.com>
Gerrit-Reviewer: Aaron Schulz <asch...@wikimedia.org>
Gerrit-Reviewer: BryanDavis <bda...@wikimedia.org>
Gerrit-Reviewer: Gilles <gdu...@wikimedia.org>
Gerrit-Reviewer: Jforrester <jforres...@wikimedia.org>
Gerrit-Reviewer: Krinkle <krinklem...@gmail.com>
Gerrit-Reviewer: Legoktm <lego...@member.fsf.org>
Gerrit-Reviewer: Reedy <re...@wikimedia.org>
Gerrit-Reviewer: Tim Starling <tstarl...@wikimedia.org>
Gerrit-Reviewer: jenkins-bot <>

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