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<title>[BuddyPress][10178] trunk: Make sure uploaded images are oriented the right way.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://buddypress.trac.wordpress.org/changeset/10178">10178</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://buddypress.trac.wordpress.org/changeset/10178","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>imath</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-10-03 22:42:02 +0000 (Sat, 03 Oct 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Make sure uploaded images are oriented the right way.

When using a mobile device to set an avatar or a cover image, there are cases when the image can be saved upside down. We need to check the exif Orientation of uploaded images and rotate them if needed.

Introduce 2 new methods into the `BP_Attachment` class:
- `BP_Attachment->get_image_data()` to get an array of all image datas (including exif datas)
- `BP_Attachment->edit_image()` to edit the image orientation and/or resize the image.

Use these two new methods within the `BP_Attachment_Avatar->shrink()` and `BP_Attachment_Cover_Image()->fit()` methods.

Finally include a unit test for the `BP_Attachment->get_image_data()` method to check we get the orientation meta for all supported WorPress versions.

Props modemlooper, shanebp, r-a-y, DJPaul

Fixes <a href="http://buddypress.trac.wordpress.org/ticket/5089">#5089</a>
See <a href="http://buddypress.trac.wordpress.org/ticket/6570">#6570</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcbpcoreclassesclassbpattachmentavatarphp">trunk/src/bp-core/classes/class-bp-attachment-avatar.php</a></li>
<li><a href="#trunksrcbpcoreclassesclassbpattachmentcoverimagephp">trunk/src/bp-core/classes/class-bp-attachment-cover-image.php</a></li>
<li><a href="#trunksrcbpcoreclassesclassbpattachmentphp">trunk/src/bp-core/classes/class-bp-attachment.php</a></li>
<li><a href="#trunktestsphpunittestcasescoreclassbpattachmentphp">trunk/tests/phpunit/testcases/core/class-bp-attachment.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcbpcoreclassesclassbpattachmentavatarphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-core/classes/class-bp-attachment-avatar.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-core/classes/class-bp-attachment-avatar.php  2015-10-03 21:55:08 UTC (rev 10177)
+++ trunk/src/bp-core/classes/class-bp-attachment-avatar.php    2015-10-03 22:42:02 UTC (rev 10178)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -119,7 +119,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 2.3.0
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @uses  bp_core_avatar_original_max_width()
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         * @uses  wp_get_image_editor()
</del><span class="cx" style="display: block; padding: 0 10px">          *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param string $file the absolute path to the file.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -127,39 +126,40 @@
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        public static function shrink( $file = '' ) {
</span><span class="cx" style="display: block; padding: 0 10px">                // Get image size
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $size   = @getimagesize( $file );
-               $retval = false;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $avatar_data = parent::get_image_data( $file );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Check image size and shrink if too large
-               if ( $size[0] > bp_core_avatar_original_max_width() ) {
-                       $editor = wp_get_image_editor( $file );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Init the edit args
+               $edit_args = array();
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( ! is_wp_error( $editor ) ) {
-                               $editor->set_quality( 100 );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Do we need to resize the image ?
+               if ( isset( $avatar_data['width'] ) && $avatar_data['width'] > bp_core_avatar_original_max_width() ) {
+                       $edit_args = array(
+                               'max_w' => bp_core_avatar_original_max_width(),
+                               'max_h' => bp_core_avatar_original_max_width(),
+                       );
+               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $resized = $editor->resize( bp_core_avatar_original_max_width(), bp_core_avatar_original_max_width(), false );
-                               if ( ! is_wp_error( $resized ) ) {
-                                       $thumb = $editor->save( $editor->generate_filename() );
-                               } else {
-                                       $retval = $resized;
-                               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Do we need to rotate the image ?
+               $angles = array(
+                       3 => 180,
+                       6 => -90,
+                       8 =>  90,
+               );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                // Check for thumbnail creation errors
-                               if ( ( false === $retval ) && is_wp_error( $thumb ) ) {
-                                       $retval = $thumb;
-                               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( isset( $avatar_data['meta']['orientation'] ) && isset( $angles[ $avatar_data['meta']['orientation'] ] ) ) {
+                       $edit_args['rotate'] = $angles[ $avatar_data['meta']['orientation'] ];
+               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                // Thumbnail is good so proceed
-                               if ( false === $retval ) {
-                                       $retval = $thumb;
-                               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // No need to edit the avatar, original file will be used
+               if ( empty( $edit_args ) ) {
+                       return false;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        } else {
-                               $retval = $editor;
-                       }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Add the file to the edit arguments
+               } else {
+                       $edit_args['file'] = $file;
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                return $retval;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         return parent::edit_image( 'avatar', $edit_args );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span></span></pre></div>
<a id="trunksrcbpcoreclassesclassbpattachmentcoverimagephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-core/classes/class-bp-attachment-cover-image.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-core/classes/class-bp-attachment-cover-image.php     2015-10-03 21:55:08 UTC (rev 10177)
+++ trunk/src/bp-core/classes/class-bp-attachment-cover-image.php       2015-10-03 22:42:02 UTC (rev 10178)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -138,39 +138,52 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                // Get image size
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $size   = @getimagesize( $file );
-               $retval = false;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $cover_data = parent::get_image_data( $file );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Check image size and shrink if too large
-               if ( $size[0] > $dimensions['width'] || $size[1] > $dimensions['height'] ) {
-                       $editor = wp_get_image_editor( $file );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Init the edit args
+               $edit_args = array();
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( ! is_wp_error( $editor ) ) {
-                               $editor->set_quality( 100 );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Do we need to resize the image ?
+               if ( ( isset( $cover_data['width'] ) && $cover_data['width'] > $dimensions['width'] ) ||
+               ( isset( $cover_data['height'] ) && $cover_data['height'] > $dimensions['height'] ) ) {
+                       $edit_args = array(
+                               'max_w' => $dimensions['width'],
+                               'max_h' => $dimensions['height'],
+                               'crop'  => true,
+                       );
+               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $resized = $editor->resize( $dimensions['width'], $dimensions['height'], true );
-                               if ( ! is_wp_error( $resized ) ) {
-                                       $cover   = $editor->save( $this->generate_filename( $file ) );
-                               } else {
-                                       $retval = $resized;
-                               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Do we need to rotate the image ?
+               $angles = array(
+                       3 => 180,
+                       6 => -90,
+                       8 =>  90,
+               );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                // Check for cover creation errors
-                               if ( ( false === $retval ) && is_wp_error( $cover ) ) {
-                                       $retval = $cover;
-                               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( isset( $cover_data['meta']['orientation'] ) && isset( $angles[ $cover_data['meta']['orientation'] ] ) ) {
+                       $edit_args['rotate'] = $angles[ $cover_data['meta']['orientation'] ];
+               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                // Cover is good so proceed
-                               if ( false === $retval ) {
-                                       $retval = $cover;
-                               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // No need to edit the avatar, original file will be used
+               if ( empty( $edit_args ) ) {
+                       return false;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        } else {
-                               $retval = $editor;
-                       }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Add the file to the edit arguments
+               } else {
+                       $edit_args = array_merge( $edit_args, array( 'file' => $file, 'save' => false ) );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                return $retval;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Get the editor so that we can use a specific save method
+               $editor = parent::edit_image( 'cover_image', $edit_args );
+
+               if ( is_wp_error( $editor ) )  {
+                       return $editor;
+               } elseif ( ! is_a( $editor, 'WP_Image_Editor' ) ) {
+                       return false;
+               }
+
+               // Save the new image file
+               return $editor->save( $this->generate_filename( $file ) );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span></span></pre></div>
<a id="trunksrcbpcoreclassesclassbpattachmentphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-core/classes/class-bp-attachment.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-core/classes/class-bp-attachment.php 2015-10-03 21:55:08 UTC (rev 10177)
+++ trunk/src/bp-core/classes/class-bp-attachment.php   2015-10-03 22:42:02 UTC (rev 10178)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -521,4 +521,142 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                return $script_data;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        * Get full data for an image
+        *
+        * @since  2.4.0
+        *
+        * @param  string $file Absolute path to the uploaded image.
+        * @return bool|array   An associate array containing the width, height and metadatas.
+        *                      False in case an important image attribute is missing.
+        */
+       public static function get_image_data( $file ) {
+               // Try to get image basic data
+               list( $width, $height, $sourceImageType ) = @getimagesize( $file );
+
+               // No need to carry on if we couldn't get image's basic data.
+               if ( is_null( $width ) || is_null( $height ) || is_null( $sourceImageType ) ) {
+                       return false;
+               }
+
+               // Initialize the image data
+               $image_data = array(
+                       'width'  => $width,
+                       'height' => $height,
+               );
+
+               /**
+                * Make sure the wp_read_image_metadata function is reachable for the old Avatar UI
+                * or if WordPress < 3.9 (New Avatar UI is not available in this case)
+                */
+               if ( ! function_exists( 'wp_read_image_metadata' ) ) {
+                       require_once( ABSPATH . 'wp-admin/includes/image.php' );
+               }
+
+               // Now try to get image's meta data
+               $meta = wp_read_image_metadata( $file );
+
+               if ( ! empty( $meta ) ) {
+                       // Before 4.0 the Orientation wasn't included
+                       if ( ! isset( $meta['orientation'] ) &&
+                               is_callable( 'exif_read_data' ) &&
+                               in_array( $sourceImageType, apply_filters( 'wp_read_image_metadata_types', array( IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM ) ) )
+                       ) {
+                               $exif = exif_read_data( $file );
+
+                               if ( ! empty( $exif['Orientation'] ) ) {
+                                       $meta['orientation'] = $exif['Orientation'];
+                               }
+                       }
+
+                       // Now add the metas to image data
+                       $image_data['meta'] = $meta;
+               }
+
+               /**
+                * Filter here to add/remove/edit data to the image full data
+                *
+                * @since  2.4.0
+                *
+                * @param  array $image_data An associate array containing the width, height and metadatas.
+                */
+               return apply_filters( 'bp_attachments_get_image_data', $image_data );
+       }
+
+       /**
+        * Edit an image file to resize it or rotate it
+        *
+        * @since  2.4.0
+        *
+        * @param  string $attachment_type The attachment type (eg: avatar or cover_image). Required.
+        * @param  array  array $args {
+        *     @type string $file     Absolute path to the image file (required).
+        *     @type int    $max_w    Max width attribute for the editor's resize method (optional).
+        *     @type int    $max_h    Max height attribute for the editor's resize method (optional).
+        *     @type bool   $crop     Crop attribute for the editor's resize method (optional).
+        *     @type float  $rotate   Angle for the editor's rotate method (optional).
+        *     @type int    $quality  Compression quality on a 1-100% scale (optional).
+        *     @type bool   $save     Whether to use the editor's save method or not (optional).
+        * }
+        *
+        * @return string|WP_Image_Editor|WP_Error The edited image path or the WP_Image_Editor object in case of success,
+        *                                         an WP_Error object otherwise.
+        */
+       public static function edit_image( $attachment_type, $args = array() ) {
+               if ( empty( $attachment_type ) ) {
+                       return new WP_Error( 'missing_parameter' );
+               }
+
+               $r = bp_parse_args( $args, array(
+                       'file'   => '',
+                       'max_w'   => 0,
+                       'max_h'   => 0,
+                       'crop'    => false,
+                       'rotate'  => 0,
+                       'quality' => 90,
+                       'save'    => true,
+               ), 'attachment_' . $attachment_type . '_edit_image' );
+
+               // Make sure we have to edit the image.
+               if ( empty( $r['max_w'] ) && empty( $r['max_h'] ) && empty( $r['rotate'] ) && empty( $r['file'] ) ) {
+                       return new WP_Error( 'missing_parameter' );
+               }
+
+               // Get the image editor
+               $editor = wp_get_image_editor( $r['file'] );
+
+               if ( is_wp_error( $editor ) ) {
+                       return $editor;
+               }
+
+               $editor->set_quality( $r['quality'] );
+
+               if ( ! empty( $r['rotate'] ) ) {
+                       $rotated = $editor->rotate( $r['rotate'] );
+
+                       // Stop in case of error
+                       if ( is_wp_error( $rotated ) ) {
+                               return $rotated;
+                       }
+               }
+
+               if ( ! empty( $r['max_w'] ) || ! empty( $r['max_h'] ) ) {
+                       $resized = $editor->resize( $r['max_w'], $r['max_h'], $r['crop'] );
+
+                       // Stop in case of error
+                       if ( is_wp_error( $resized ) ) {
+                               return $resized;
+                       }
+               }
+
+               // Use the editor save method to get a path to the edited image
+               if ( true === $r['save'] ) {
+                       return $editor->save( $editor->generate_filename() );
+
+               // Need to do some other edit actions or use a specific method to save file
+               } else {
+                       return $editor;
+               }
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="trunktestsphpunittestcasescoreclassbpattachmentphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/testcases/core/class-bp-attachment.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/testcases/core/class-bp-attachment.php        2015-10-03 21:55:08 UTC (rev 10177)
+++ trunk/tests/phpunit/testcases/core/class-bp-attachment.php  2015-10-03 22:42:02 UTC (rev 10178)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -443,4 +443,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                // Cleanup
</span><span class="cx" style="display: block; padding: 0 10px">                $this->clean_files( 'buddypress' );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        * @group avatars
+        * @group cover_images
+        */
+       public function test_bp_attachment_get_image_data() {
+               $image_data = BP_Attachment::get_image_data( BP_TESTS_DIR . 'assets/upside-down.jpg' );
+
+               $this->assertTrue( 3 === $image_data['meta']['orientation'] );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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