Use ImageMagick instead of GraphicsMagick

src/api/common/add-file-to-drive.ts

@@ -5,7 +5,7 @@ import * as stream from 'stream';
 
 import * as mongodb from 'mongodb';
 import * as crypto from 'crypto';
-import * as gm from 'gm';
+import * as _gm from 'gm';
 import * as debug from 'debug';
 import fileType = require('file-type');
 import prominence = require('prominence');
@@ -16,6 +16,10 @@ import serialize from '../serializers/drive-file';
 import event, { publishDriveStream } from '../event';
 import config from '../../conf';
 
+const gm = _gm.subClass({
+	imageMagick: true
+});
+
 const log = debug('misskey:register-drive-file');
 
 const tmpFile = (): Promise<string> => new Promise((resolve, reject) => {

src/file/server.ts

@@ -7,11 +7,15 @@ import * as express from 'express';
 import * as bodyParser from 'body-parser';
 import * as cors from 'cors';
 import * as mongodb from 'mongodb';
-import * as gm from 'gm';
+import * as _gm from 'gm';
 import * as stream from 'stream';
 
 import DriveFile, { getGridFSBucket } from '../api/models/drive-file';
 
+const gm = _gm.subClass({
+	imageMagick: true
+});
+
 /**
  * Init app
  */
@@ -78,6 +82,7 @@ function thumbnail(data: stream.Readable, type: string, resize: number): ISend {
 	const stream = g
 		.compress('jpeg')
 		.quality(80)
+		.noProfile() // Remove EXIF
 		.stream();
 
 	return {

src/utils/dependencyInfo.ts

@@ -11,7 +11,7 @@ export default class {
 	public showAll(): void {
 		this.show('MongoDB', 'mongo --version', x => x.match(/^MongoDB shell version:? (.*)\r?\n/));
 		this.show('Redis', 'redis-server --version', x => x.match(/v=([0-9\.]*)/));
-		this.show('GraphicsMagick', 'gm -version', x => x.match(/^GraphicsMagick ([0-9\.]*) .*/));
+		this.show('ImageMagick', 'magick -version', x => x.match(/^Version: ImageMagick (.+?)\r?\n/));
 	}
 
 	public show(serviceName: string, command: string, transform: (x: string) => RegExpMatchArray): void {