Revert id field and add new url field to be compatible with mobile

libloki/crypto.js

@@ -6,6 +6,7 @@
   Multibase,
   TextEncoder,
   TextDecoder,
+  crypto,
   dcodeIO
 */
 
@@ -180,6 +181,8 @@
 
   const snodeCipher = new LokiSnodeChannel();
 
+  const sha512 = data => crypto.subtle.digest('SHA-512', data);
+
   window.libloki.crypto = {
     DHEncrypt,
     DHDecrypt,
@@ -190,5 +193,6 @@
     // for testing
     _LokiSnodeChannel: LokiSnodeChannel,
     _decodeSnodeAddressToPubKey: decodeSnodeAddressToPubKey,
+    sha512,
   };
 })();

libtextsecure/message_receiver.js

@@ -1438,7 +1438,7 @@ MessageReceiver.prototype.extend({
   },
   async downloadAttachment(attachment) {
     // The attachment id is actually just the absolute url of the attachment
-    const encrypted = await this.server.getAttachment(attachment.id);
+    const encrypted = await this.server.getAttachment(attachment.url);
     const { key, digest, size } = attachment;
 
     const data = await textsecure.crypto.decryptAttachment(

libtextsecure/sendmessage.js

@@ -1,4 +1,4 @@
-/* global _, textsecure, WebAPI, libsignal, OutgoingMessage, window */
+/* global _, textsecure, WebAPI, libsignal, OutgoingMessage, window, dcodeIO, libloki */
 
 /* eslint-disable more/no-then, no-bitwise */
 
@@ -191,8 +191,14 @@ MessageSender.prototype = {
     return textsecure.crypto
       .encryptAttachment(attachment.data, proto.key, iv)
       .then(result =>
-        this.server.putAttachment(result.ciphertext).then(url => {
-          proto.id = url;
+        this.server.putAttachment(result.ciphertext).then(async url => {
+          const urlBuffer = dcodeIO.ByteBuffer.wrap(
+            url,
+            'utf8'
+          ).toArrayBuffer();
+          const idBuffer = await libloki.crypto.sha512(urlBuffer);
+          proto.id = dcodeIO.ByteBuffer.wrap(idBuffer).toString('base64');
+          proto.url = url;
           proto.contentType = attachment.contentType;
           proto.digest = result.digest;
 

protos/SignalService.proto

@@ -309,7 +309,7 @@ message AttachmentPointer {
     VOICE_MESSAGE = 1;
   }
 
-  optional string  id          = 1;
+  optional fixed64 id          = 1;
   optional string  contentType = 2;
   optional bytes   key         = 3;
   optional uint32  size        = 4;
@@ -320,6 +320,7 @@ message AttachmentPointer {
   optional uint32  width       = 9;
   optional uint32  height      = 10;
   optional string  caption     = 11;
+  optional string  url         = 12;
 }
 
 message GroupContext {