feat: add preview provider for emf files based on office

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

config/config.sample.php

@@ -1285,6 +1285,7 @@ $CONFIG = [
  *  - ``OC\Preview\StarOffice``
  *  - ``OC\Preview\SVG``
  *  - ``OC\Preview\TIFF``
+ *  - ``OC\Preview\EMF``
  *
  *
  * Defaults to the following providers:
@@ -1945,7 +1946,7 @@ $CONFIG = [
  *
  * Example for windows systems: ``array('?', '<', '>', ':', '*', '|', '"', chr(0), "\n", "\r")``
  * see https://en.wikipedia.org/wiki/Comparison_of_file_systems#Limits
- * 
+ *
  * Defaults to ``array()``
  */
 'forbidden_chars' => [],

core/js/mimetypelist.js

@@ -113,7 +113,8 @@ OC.MimeTypeList={
     "application/vnd.xmind.workbook": "mindmap",
     "image/targa": "image/tga",
     "application/vnd.openxmlformats-officedocument.wordprocessingml.document.oform": "x-office/form",
-    "application/vnd.openxmlformats-officedocument.wordprocessingml.document.docxf": "x-office/form-template"
+    "application/vnd.openxmlformats-officedocument.wordprocessingml.document.docxf": "x-office/form-template",
+    "image/x-emf": "image/emf"
 },
 	files: [
     "application",

lib/composer/composer/autoload_classmap.php

@@ -1534,6 +1534,7 @@ return array(
     'OC\\Preview\\BackgroundCleanupJob' => $baseDir . '/lib/private/Preview/BackgroundCleanupJob.php',
     'OC\\Preview\\Bitmap' => $baseDir . '/lib/private/Preview/Bitmap.php',
     'OC\\Preview\\Bundled' => $baseDir . '/lib/private/Preview/Bundled.php',
+    'OC\\Preview\\EMF' => $baseDir . '/lib/private/Preview/EMF.php',
     'OC\\Preview\\Font' => $baseDir . '/lib/private/Preview/Font.php',
     'OC\\Preview\\GIF' => $baseDir . '/lib/private/Preview/GIF.php',
     'OC\\Preview\\Generator' => $baseDir . '/lib/private/Preview/Generator.php',

lib/composer/composer/autoload_static.php

@@ -1567,6 +1567,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OC\\Preview\\BackgroundCleanupJob' => __DIR__ . '/../../..' . '/lib/private/Preview/BackgroundCleanupJob.php',
         'OC\\Preview\\Bitmap' => __DIR__ . '/../../..' . '/lib/private/Preview/Bitmap.php',
         'OC\\Preview\\Bundled' => __DIR__ . '/../../..' . '/lib/private/Preview/Bundled.php',
+        'OC\\Preview\\EMF' => __DIR__ . '/../../..' . '/lib/private/Preview/EMF.php',
         'OC\\Preview\\Font' => __DIR__ . '/../../..' . '/lib/private/Preview/Font.php',
         'OC\\Preview\\GIF' => __DIR__ . '/../../..' . '/lib/private/Preview/GIF.php',
         'OC\\Preview\\Generator' => __DIR__ . '/../../..' . '/lib/private/Preview/Generator.php',

lib/private/Preview/EMF.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2023 Daniel Kesselberg <mail@danielkesselberg.de>
+ *
+ * @author Daniel Kesselberg <mail@danielkesselberg.de>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Preview;
+
+class EMF extends Office {
+	public function getMimeType(): string {
+		return '/image\/emf/';
+	}
+}

lib/private/PreviewManager.php

@@ -408,6 +408,7 @@ class PreviewManager implements IPreview {
 					$this->registerCoreProvider(Preview\MSOffice2007::class, '/application\/vnd.openxmlformats-officedocument.*/', ["officeBinary" => $officeBinary]);
 					$this->registerCoreProvider(Preview\OpenDocument::class, '/application\/vnd.oasis.opendocument.*/', ["officeBinary" => $officeBinary]);
 					$this->registerCoreProvider(Preview\StarOffice::class, '/application\/vnd.sun.xml.*/', ["officeBinary" => $officeBinary]);
+					$this->registerCoreProvider(Preview\EMF::class, '/image\/emf/', ['officeBinary' => $officeBinary]);
 				}
 			}
 		}

lib/private/Repair/RepairMimeTypes.php

@@ -229,6 +229,13 @@ class RepairMimeTypes implements IRepairStep {
 		return $this->updateMimetypes($updatedMimetypes);
 	}
 
+	private function introduceEnhancedMetafileFormatType() {
+		$updatedMimetypes = [
+			'emf' => 'image/emf',
+		];
+
+		return $this->updateMimetypes($updatedMimetypes);
+	}
 
 	/**
 	 * Fix mime types
@@ -286,5 +293,9 @@ class RepairMimeTypes implements IRepairStep {
 		if (version_compare($ocVersionFromBeforeUpdate, '26.0.0.1', '<') && $this->introduceAsciidocType()) {
 			$out->info('Fixed AsciiDoc mime types');
 		}
+
+		if (version_compare($ocVersionFromBeforeUpdate, '28.0.0.5', '<') && $this->introduceEnhancedMetafileFormatType()) {
+			$out->info('Fixed Enhanced Metafile Format mime types');
+		}
 	}
 }

resources/config/mimetypealiases.dist.json

@@ -114,5 +114,6 @@
 	"application/vnd.xmind.workbook": "mindmap",
 	"image/targa": "image/tga",
 	"application/vnd.openxmlformats-officedocument.wordprocessingml.document.oform": "x-office/form",
-	"application/vnd.openxmlformats-officedocument.wordprocessingml.document.docxf": "x-office/form-template"
+	"application/vnd.openxmlformats-officedocument.wordprocessingml.document.docxf": "x-office/form-template",
+	"image/x-emf": "image/emf"
 }

resources/config/mimetypemapping.dist.json

@@ -51,6 +51,7 @@
 	"dot": ["application/msword"],
 	"dotx": ["application/vnd.openxmlformats-officedocument.wordprocessingml.template"],
 	"dv": ["video/dv"],
+	"emf": ["image/emf"],
 	"eot": ["application/vnd.ms-fontobject"],
 	"eps": ["application/postscript"],
 	"epub": ["application/epub+zip"],

tests/data/integritycheck/mimetypeListModified/core/js/mimetypelist.js

@@ -115,6 +115,7 @@ OC.MimeTypeList={
     "image/targa": "image/tga",
     "application/vnd.openxmlformats-officedocument.wordprocessingml.document.oform": "x-office/form",
     "application/vnd.openxmlformats-officedocument.wordprocessingml.document.docxf": "x-office/form-template",
+    "image/x-emf": "image/emf",
     "my-custom/mimetype": "custom"
 },
 	files: [

tests/data/integritycheck/mimetypeListModified/core/signature.json

@@ -1,7 +1,7 @@
 {
     "hashes": {
-        "core\/js\/mimetypelist.js": "2a6ab9af5353d464c0dd3bd651cfc13ba35009463949bc45bd8f7073828fa34fbdac7a81ba2b188e7e0c97fc63c2167825b069f61341e507ca33213b1e6e4593"
+        "core\/js\/mimetypelist.js": "e9e515c5eeb08b02971e5943640bef89b6d1c2d746d5883bf974c6ac753f810685c7a20bf0ed4d32d8c046cd2cef6c045682c7d89c6a3b7b6c33122f5fd2088f"
     },
-    "signature": "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",
+    "signature": "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",
     "certificate": "-----BEGIN CERTIFICATE-----\r\nMIIEvjCCAqagAwIBAgIUc\/0FxYrsgSs9rDxp03EJmbjN0NwwDQYJKoZIhvcNAQEF\r\nBQAwIzEhMB8GA1UECgwYb3duQ2xvdWQgQ29kZSBTaWduaW5nIENBMB4XDTE1MTEw\r\nMzIxMDMzM1oXDTE2MTEwMzIxMDMzM1owDzENMAsGA1UEAwwEY29yZTCCAiIwDQYJ\r\nKoZIhvcNAQEBBQADggIPADCCAgoCggIBALb6EgHpkAqZbO5vRO8XSh7G7XGWHw5s\r\niOf4RwPXR6SE9bWZEm\/b72SfWk\/\/J6AbrD8WiOzBuT\/ODy6k5T1arEdHO+Pux0W1\r\nMxYJJI4kH74KKgMpC0SB0Rt+8WrMqV1r3hhJ46df6Xr\/xolP3oD+eLbShPcblhdS\r\nVtkZEkoev8Sh6L2wDCeHDyPxzvj1w2dTdGVO9Kztn0xIlyfEBakqvBWtcxyi3Ln0\r\nklnxlMx3tPDUE4kqvpia9qNiB1AN2PV93eNr5\/2riAzIssMFSCarWCx0AKYb54+d\r\nxLpcYFyqPJ0ydBCkF78DD45RCZet6PNYkdzgbqlUWEGGomkuDoJbBg4wzgzO0D77\r\nH87KFhYW8tKFFvF1V3AHl\/sFQ9tDHaxM9Y0pZ2jPp\/ccdiqnmdkBxBDqsiRvHvVB\r\nCn6qpb4vWGFC7vHOBfYspmEL1zLlKXZv3ezMZEZw7O9ZvUP3VO\/wAtd2vUW8UFiq\r\ns2v1QnNLN6jNh51obcwmrBvWhJy9vQIdtIjQbDxqWTHh1zUSrw9wrlklCBZ\/zrM0\r\ni8nfCFwTxWRxp3H9KoECzO\/zS5R5KIS7s3\/wq\/w9T2Ie4rcecgXwDizwnn0C\/aKc\r\nbDIjujpL1s9HO05pcD\/V3wKcPZ1izymBkmMyIbL52iRVN5FTVHeZdXPpFuq+CTQJ\r\nQ238lC+A\/KOVAgMBAAEwDQYJKoZIhvcNAQEFBQADggIBAGoKTnh8RfJV4sQItVC2\r\nAvfJagkrIqZ3iiQTUBQGTKBsTnAqE1H7QgUSV9vSd+8rgvHkyZsRjmtyR1e3A6Ji\r\noNCXUbExC\/0iCPUqdHZIVb+Lc\/vWuv4ByFMybGPydgtLoEUX2ZrKFWmcgZFDUSRd\r\n9Uj26vtUhCC4bU4jgu6hIrR9IuxOBLQUxGTRZyAcXvj7obqRAEZwFAKQgFpfpqTb\r\nH+kjcbZSaAlLVSF7vBc1syyI8RGYbqpwvtREqJtl5IEIwe6huEqJ3zPnlP2th\/55\r\ncf3Fovj6JJgbb9XFxrdnsOsDOu\/tpnaRWlvv5ib4+SzG5wWFT5UUEo4Wg2STQiiX\r\nuVSRQxK1LE1yg84bs3NZk9FSQh4B8vZVuRr5FaJsZZkwlFlhRO\/\/+TJtXRbyNgsf\r\noMRZGi8DLGU2SGEAHcRH\/QZHq\/XDUWVzdxrSBYcy7GSpT7UDVzGv1rEJUrn5veP1\r\n0KmauAqtiIaYRm4f6YBsn0INcZxzIPZ0p8qFtVZBPeHhvQtvOt0iXI\/XUxEWOa2F\r\nK2EqhErgMK\/N07U1JJJay5tYZRtvkGq46oP\/5kQG8hYST0MDK6VihJoPpvCmAm4E\r\npEYKQ96x6A4EH9Y9mZlYozH\/eqmxPbTK8n89\/p7Ydun4rI+B2iiLnY8REWWy6+UQ\r\nV204fGUkJqW5CrKy3P3XvY9X\r\n-----END CERTIFICATE-----"
 }

version.php

@@ -30,7 +30,7 @@
 // between betas, final and RCs. This is _not_ the public version number. Reset minor/patch level
 // when updating major/minor version number.
 
-$OC_Version = [28, 0, 0, 4];
+$OC_Version = [28, 0, 0, 5];
 
 // The human-readable string
 $OC_VersionString = '28.0.0 beta 2';