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-rw-r--r--models/attachments.js79
1 files changed, 79 insertions, 0 deletions
diff --git a/models/attachments.js b/models/attachments.js
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+Attachments = new FS.Collection('attachments', {
+ stores: [
+
+ // XXX Add a new store for cover thumbnails so we don't load big images in
+ // the general board view
+ new FS.Store.GridFS('attachments'),
+ ],
+});
+
+if (Meteor.isServer) {
+ Attachments.allow({
+ insert(userId, doc) {
+ return allowIsBoardMember(userId, Boards.findOne(doc.boardId));
+ },
+ update(userId, doc) {
+ return allowIsBoardMember(userId, Boards.findOne(doc.boardId));
+ },
+ remove(userId, doc) {
+ return allowIsBoardMember(userId, Boards.findOne(doc.boardId));
+ },
+ // We authorize the attachment download either:
+ // - if the board is public, everyone (even unconnected) can download it
+ // - if the board is private, only board members can download it
+ //
+ // XXX We have a bug with the `userId` verification:
+ //
+ // https://github.com/CollectionFS/Meteor-CollectionFS/issues/449
+ //
+ download(userId, doc) {
+ const query = {
+ $or: [
+ { 'members.userId': userId },
+ { permission: 'public' },
+ ],
+ };
+ return Boolean(Boards.findOne(doc.boardId, query));
+ },
+
+ fetch: ['boardId'],
+ });
+}
+
+// XXX Enforce a schema for the Attachments CollectionFS
+
+Attachments.files.before.insert((userId, doc) => {
+ const file = new FS.File(doc);
+ doc.userId = userId;
+
+ // If the uploaded document is not an image we need to enforce browser
+ // download instead of execution. This is particularly important for HTML
+ // files that the browser will just execute if we don't serve them with the
+ // appropriate `application/octet-stream` MIME header which can lead to user
+ // data leaks. I imagine other formats (like PDF) can also be attack vectors.
+ // See https://github.com/libreboard/libreboard/issues/99
+ // XXX Should we use `beforeWrite` option of CollectionFS instead of
+ // collection-hooks?
+ if (!file.isImage()) {
+ file.original.type = 'application/octet-stream';
+ }
+});
+
+if (Meteor.isServer) {
+ Attachments.files.after.insert((userId, doc) => {
+ Activities.insert({
+ userId,
+ type: 'card',
+ activityType: 'addAttachment',
+ attachmentId: doc._id,
+ boardId: doc.boardId,
+ cardId: doc.cardId,
+ });
+ });
+
+ Attachments.files.after.remove((userId, doc) => {
+ Activities.remove({
+ attachmentId: doc._id,
+ });
+ });
+}