Tipos de archivo permitidos para imágenes de avatares

Años después… este es en realidad un problema un poco complicado. Podemos hacer algo como esto.

commit ea5927e3ff15616fc7df91ddcd361e6379a12582
Author: Sam Saffron <sam.saffron@gmail.com>
Date:   Thu Oct 30 13:51:02 2025 +1100

    FEATURE: filter uploads correctly in uppy uploader and image  / avatar uploader

diff --git a/frontend/discourse/admin/components/images-uploader.gjs b/frontend/discourse/admin/components/images-uploader.gjs
index 18a857d581..978edaac30 100644
--- a/frontend/discourse/admin/components/images-uploader.gjs
+++ b/frontend/discourse/admin/components/images-uploader.gjs
@@ -2,13 +2,18 @@
 import Component from “@ember/component”;
 import { getOwner } from “@ember/owner”;
 import didInsert from “@ember/render-modifiers/modifiers/did-insert”;
+import { service } from “@ember/service”;
 import { tagName } from “@ember-decorators/component”;
 import icon from “discourse/helpers/d-icon”;
+import { acceptedImageFormats } from “discourse/lib/uploads”;
 import UppyUpload from “discourse/lib/uppy/uppy-upload”;
 import { i18n } from “discourse-i18n”;

 @tagName(“span”)
 export default class ImagesUploader extends Component {
+  @service currentUser;
+  @service siteSettings;
+
   uppyUpload = new UppyUpload(getOwner(this), {
     id: “images-uploader”,
     type: “avatar”,
@@ -28,6 +33,10 @@ export default class ImagesUploader extends Component {
     return this.uploadingOrProcessing ? i18n(“uploading”) : i18n(“upload”);
   }

+  get acceptedFormats() {
+    return acceptedImageFormats(this.currentUser?.staff, this.siteSettings);
+  }
+
   	<template>
     	<label
        class="btn"
@@ -40,7 +49,7 @@ export default class ImagesUploader extends Component {
           class="hidden-upload-field"
           disabled={{this.uppyUpload.uploading}}
           type="file"
-          accept="image/*"
+          accept={{this.acceptedFormats}}
           multiple
         />
     	</label>
diff --git a/frontend/discourse/app/components/avatar-uploader.gjs b/frontend/discourse/app/components/avatar-uploader.gjs
index d3bf8fc341..0f77c9e06a 100644
--- a/frontend/discourse/app/components/avatar-uploader.gjs
+++ b/frontend/discourse/app/components/avatar-uploader.gjs
@@ -3,15 +3,20 @@ import Component from “@ember/component”;
 import { action } from “@ember/object”;
 import { getOwner } from “@ember/owner”;
 import didInsert from “@ember/render-modifiers/modifiers/did-insert”;
+import { service } from “@ember/service”;
 import { isBlank } from “@ember/utils”;
 import { tagName } from “@ember-decorators/component”;
 import DButton from “discourse/components/d-button”;
 import discourseComputed from “discourse/lib/decorators”;
+import { acceptedImageFormats } from “discourse/lib/uploads”;
 import UppyUpload from “discourse/lib/uppy/uppy-upload”;
 import { i18n } from “discourse-i18n”;

 @tagName(“span”)
 export default class AvatarUploader extends Component {
+  @service currentUser;
+  @service siteSettings;
+
   uppyUpload = new UppyUpload(getOwner(this), {
     id: “avatar-uploader”,
     type: “avatar”,
@@ -34,6 +39,11 @@ export default class AvatarUploader extends Component {

   imageIsNotASquare = false;

+  @discourseComputed()
+  acceptedFormats() {
+    return acceptedImageFormats(this.currentUser?.staff, this.siteSettings);
+  }
+
   @discourseComputed(“uppyUpload.uploading”, “uploadedAvatarId”)
   customAvatarUploaded() {
     return !this.uppyUpload.uploading 	&& !isBlank(this.uploadedAvatarId);
@@ -58,7 +68,7 @@ export default class AvatarUploader extends Component {
       class="hidden-upload-field"
       disabled={{this.uppyUpload.uploading}}
       type="file"
-      accept="image/*"
+      accept={{this.acceptedFormats}}
       aria-hidden="true"
     />
     	<DButton
diff --git a/frontend/discourse/app/components/uppy-image-uploader.gjs b/frontend/discourse/app/components/uppy-image-uploader.gjs
index 6a94ae6cb8..28bf264e8a 100644
--- a/frontend/discourse/app/components/uppy-image-uploader.gjs
+++ b/frontend/discourse/app/components/uppy-image-uploader.gjs
@@ -15,7 +15,12 @@ import concatClass from “discourse/helpers/concat-class”;
 import icon from “discourse/helpers/d-icon”;
 import { getURLWithCDN } from “discourse/lib/get-url”;
 import lightbox from “discourse/lib/lightbox”;
-import { authorizesOneOrMoreExtensions, isVideo } from “discourse/lib/uploads”;
+import {
+  acceptedImageFormats,
+  acceptedVideoFormats,
+  authorizesOneOrMoreExtensions,
+  isVideo,
+} from “discourse/lib/uploads”;
 import UppyUpload from “discourse/lib/uppy/uppy-upload”;
 import { i18n } from “discourse-i18n”;

@@ -138,7 +143,20 @@ export default class UppyImageUploader extends Component {
   }

   get acceptedFormats() {
-    return this.args.allowVideo ? "image/*,video/*" : "image/*";
+    const imageFormats = acceptedImageFormats(
+      this.currentUser?.staff,
+      this.siteSettings
+    );
+
+    if (this.args.allowVideo) {
+      const videoFormats = acceptedVideoFormats(
+        this.currentUser?.staff,
+        this.siteSettings
+      );
+      return videoFormats ? `${imageFormats},${videoFormats}` : imageFormats;
+    }
+
+    return imageFormats;
   }

   get isVideoFile() {
diff --git a/frontend/discourse/app/lib/uploads.js b/frontend/discourse/app/lib/uploads.js
index a49005f6a8..da38f2abf4 100644
--- a/frontend/discourse/app/lib/uploads.js
+++ b/frontend/discourse/app/lib/uploads.js
@@ -178,6 +178,17 @@ function imagesExtensions(staff, siteSettings) {
   return exts;
 }

+function videosExtensions(staff, siteSettings) {
+  let exts = extensions(siteSettings).filter((ext) => isVideo(`.${ext}`));
+  if (staff) {
+    const staffExts = staffExtensions(siteSettings).filter((ext) =>
+      isVideo(`.${ext}`)
+    );
+    exts = exts.concat(staffExts);
+  }
+  return exts;
+}
+
 function isAuthorizedFile(fileName, staff, siteSettings) {
   if (
     staff &&
@@ -215,6 +226,16 @@ function authorizedImagesExtensions(staff, siteSettings) {
     : imagesExtensions(staff, siteSettings).join(", ");
 }

+export function acceptedImageFormats(staff, siteSettings) {
+  const exts = imagesExtensions(staff, siteSettings);
+  return exts.map((ext) => `.${ext}`).join(",");
+}
+
+export function acceptedVideoFormats(staff, siteSettings) {
+  const exts = videosExtensions(staff, siteSettings);
+  return exts.map((ext) => `.${ext}`).join(",");
+}
+
 export function authorizesAllExtensions(staff, siteSettings) {
   return (
     siteSettings.authorized_extensions.includes("*") ||

Una pequeña desventaja es que nuestra compresión de imágenes del lado del cliente también puede manejar la conversión de formatos. Por lo tanto, potencialmente esto bloquearía algunos tipos de imágenes que no queremos bloquear.

No estoy seguro de si queremos solucionar esto o no, pero veo que tiene un gran impacto si configuraste tu sitio (por ejemplo) para permitir solo png.
cc @martin