make attachment download use onion routing

js/modules/loki_app_dot_net_api.js

@@ -1240,6 +1240,14 @@ class LokiAppDotNetServerAPI {
     });
     return this.uploadAvatar(formData);
   }
+
+  async downloadAttachment(url) {
+    const endpoint = new URL(url).pathname;
+
+    return this.serverRequest(`loki/v1${endpoint}`, {
+      method: 'GET',
+    });
+  }
 }
 
 // functions to a specific ADN channel on an ADN server

js/modules/loki_file_server_api.d.ts

@@ -13,4 +13,5 @@ interface DeviceMappingAnnotation {
 interface LokiFileServerInstance {
   getUserDeviceMapping(pubKey: string): Promise<DeviceMappingAnnotation | null>;
   clearOurDeviceMappingAnnotations(): Promise<void>;
+  downloadAttachment(url: string): Promise<any>;
 }

js/modules/loki_file_server_api.js

@@ -198,6 +198,11 @@ class LokiFileServerInstance {
     result.slaveMap = newSlavePrimaryMap;
     return result;
   }
+
+  // for files
+  async downloadAttachment(url) {
+    return this._server.downloadAttachment(url);
+  }
 }
 
 // extends LokiFileServerInstance with functions we'd only perform on our own home server

libtextsecure/sendmessage.js

@@ -185,8 +185,8 @@ Message.prototype = {
 };
 
 function MessageSender() {
+  // Currently only used for getProxiedSize() and makeProxiedRequest(), which are only used for fetching previews
   this.server = WebAPI.connect();
-  this.pendingMessages = {};
 }
 
 MessageSender.prototype = {

preload.js

@@ -47,8 +47,8 @@ window.getCommitHash = () => config.commitHash;
 window.getNodeVersion = () => config.node_version;
 window.getHostName = () => config.hostname;
 window.getServerTrustRoot = () => config.serverTrustRoot;
-window.isBehindProxy = () => Boolean(config.proxyUrl);
 window.JobQueue = JobQueue;
+window.isBehindProxy = () => Boolean(config.proxyUrl);
 window.getStoragePubKey = key =>
   window.isDev() ? key.substring(0, key.length - 2) : key;
 window.getDefaultFileServer = () => config.defaultFileServer;

ts/receiver/attachments.ts

@@ -3,16 +3,11 @@ import _ from 'lodash';
 
 import * as Data from '../../js/modules/data';
 
-// TODO: Might convert it to a class later
-let webAPI: any;
-
 export async function downloadAttachment(attachment: any) {
-  if (!webAPI) {
-    webAPI = window.WebAPI.connect();
-  }
+  const res = await window.lokiFileServerAPI.downloadAttachment(attachment.url);
 
   // The attachment id is actually just the absolute url of the attachment
-  let data = await webAPI.getAttachment(attachment.url);
+  let data = new Uint8Array(res.response.data).buffer;
   if (!attachment.isRaw) {
     const { key, digest, size } = attachment;