correct detection of optimized image format

package-lock.json

@@ -5449,6 +5449,14 @@
       "dev": true,
       "optional": true
     },
+    "image-type": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/image-type/-/image-type-3.0.0.tgz",
+      "integrity": "sha1-FQKvMTX5BuEiyHfDHpSve3qRRsU=",
+      "requires": {
+        "file-type": "4.4.0"
+      }
+    },
     "imagemin": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/imagemin/-/imagemin-5.3.1.tgz",
@@ -8830,7 +8838,6 @@
       "version": "1.6.1",
       "resolved": "https://registry.npmjs.org/sanitize-filename/-/sanitize-filename-1.6.1.tgz",
       "integrity": "sha1-YS2hyWRz+gLczaktzVtKsWSmdyo=",
-      "dev": true,
       "requires": {
         "truncate-utf8-bytes": "1.0.2"
       }
@@ -10662,7 +10669,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/truncate-utf8-bytes/-/truncate-utf8-bytes-1.0.2.tgz",
       "integrity": "sha1-QFkjkJWS1W94pYGENLC3hInKXys=",
-      "dev": true,
       "requires": {
         "utf8-byte-length": "1.0.4"
       }
@@ -10930,8 +10936,7 @@
     "utf8-byte-length": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/utf8-byte-length/-/utf8-byte-length-1.0.4.tgz",
-      "integrity": "sha1-9F8VDExm7uloGGUFq5P8u4rWv2E=",
-      "dev": true
+      "integrity": "sha1-9F8VDExm7uloGGUFq5P8u4rWv2E="
     },
     "util-deprecate": {
       "version": "1.0.2",

package.json

@@ -33,6 +33,7 @@
     "fs-extra": "^4.0.2",
     "helmet": "^3.9.0",
     "html": "^1.0.0",
+    "image-type": "^3.0.0",
     "imagemin": "^5.3.1",
     "imagemin-mozjpeg": "^7.0.0",
     "imagemin-pngquant": "^5.0.1",
@@ -43,6 +44,7 @@
     "request": "^2.83.0",
     "request-promise": "^4.2.2",
     "rimraf": "^2.6.2",
+    "sanitize-filename": "^1.6.1",
     "scrypt": "^6.0.3",
     "serve-favicon": "~2.4.5",
     "session-file-store": "^1.1.2",

public/javascripts/messaging.js

@@ -49,6 +49,9 @@ const messaging = (function() {
                 recentNotes.reload();
             }
 
+            // we don't detect image changes here since images themselves are immutable and references should be
+            // updated in note detail as well
+
             changesToPushCountEl.html(message.changesToPushCount);
         }
         else if (message.type === 'sync-hash-check-failed') {

public/javascripts/server.js

@@ -91,6 +91,7 @@ const server = (function() {
         get,
         post,
         put,
-        remove
+        remove,
+        getHeaders
     }
 })();

routes/api/image.js

@@ -11,6 +11,8 @@ const imagemin = require('imagemin');
 const imageminMozJpeg = require('imagemin-mozjpeg');
 const imageminPngQuant = require('imagemin-pngquant');
 const jimp = require('jimp');
+const imageType = require('image-type');
+const sanitizeFilename = require('sanitize-filename');
 
 router.get('/:imageId/:filename', auth.checkApiAuth, async (req, res, next) => {
     const image = await sql.getFirst("SELECT * FROM images WHERE image_id = ?", [req.params.imageId]);
@@ -35,7 +37,7 @@ router.post('', auth.checkApiAuth, multer.single('upload'), async (req, res, nex
         return req.status(404).send(`Note ${noteId} doesn't exist.`);
     }
 
-    if (!file.mimetype.startsWith("image/")) {
+    if (!["image/png", "image/jpeg"].includes(file.mimetype)) {
         return req.send("Unknown image type: " + file.mimetype);
     }
 
@@ -44,13 +46,19 @@ router.post('', auth.checkApiAuth, multer.single('upload'), async (req, res, nex
     const resizedImage = await resize(file.buffer);
     const optimizedImage = await optimize(resizedImage);
 
+    const imageFormat = imageType(optimizedImage);
+    console.log(imageFormat);
+
+    const fileNameWithouExtension = file.originalname.replace(/\.[^/.]+$/, "");
+    const fileName = sanitizeFilename(fileNameWithouExtension + "." + imageFormat.ext);
+
     const imageId = utils.newImageId();
 
     await sql.doInTransaction(async () => {
         await sql.insert("images", {
             image_id: imageId,
-            format: file.mimetype.substr(6),
-            name: file.originalname,
+            format: imageFormat.ext,
+            name: fileName,
             checksum: utils.hash(optimizedImage),
             data: optimizedImage,
             is_deleted: 0,
@@ -76,7 +84,7 @@ router.post('', auth.checkApiAuth, multer.single('upload'), async (req, res, nex
 
     res.send({
         uploaded: true,
-        url: `/api/images/${imageId}/${file.originalname}`
+        url: `/api/images/${imageId}/${fileName}`
     });
 });
 
@@ -113,9 +121,9 @@ async function resize(buffer) {
 async function optimize(buffer) {
     return await imagemin.buffer(buffer, {
         plugins: [
-            // imageminMozJpeg({
-            //     quality: 50
-            // }),
+            imageminMozJpeg({
+                quality: 50
+            }),
             imageminPngQuant({
                 quality: "0-70"
             })

services/sync.js

@@ -146,6 +146,9 @@ async function pullSync(syncContext) {
         else if (sync.entity_name === 'images') {
             await syncUpdate.updateImage(resp, syncContext.sourceId);
         }
+        else if (sync.entity_name === 'notes_image') {
+            await syncUpdate.updateNoteImage(resp, syncContext.sourceId);
+        }
         else {
             throw new Error(`Unrecognized entity type ${sync.entity_name} in sync #${sync.id}`);
         }