From c5eff859cb2c1250f8408d56ee78ba22edfb22e4 Mon Sep 17 00:00:00 2001
From: Hubert Chathi <hubertc@matrix.org>
Date: Fri, 19 Nov 2021 17:48:25 -0500
Subject: [PATCH] add JavaScript function for getting unpublished fallback key

---
 javascript/index.d.ts  |  1 +
 javascript/olm_post.js | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/javascript/index.d.ts b/javascript/index.d.ts
index 141f695..6b9f7a6 100644
--- a/javascript/index.d.ts
+++ b/javascript/index.d.ts
@@ -29,6 +29,7 @@ declare class Account {
     remove_one_time_keys(session: Session);
     generate_fallback_key();
     fallback_key(): string;
+    unpublished_fallback_key(): string;
     pickle(key: string | Uint8Array): string;
     unpickle(key: string | Uint8Array, pickle: string);
 }
diff --git a/javascript/olm_post.js b/javascript/olm_post.js
index 450861a..305e4c5 100644
--- a/javascript/olm_post.js
+++ b/javascript/olm_post.js
@@ -172,6 +172,34 @@ Account.prototype['fallback_key'] = restore_stack(function() {
     return UTF8ToString(keys, keys_length);
 });
 
+Account.prototype['fallback_key'] = restore_stack(function() {
+    var keys_length = account_method(
+        Module['_olm_account_fallback_key_length']
+    )(this.ptr);
+    var keys = stack(keys_length + NULL_BYTE_PADDING_LENGTH);
+    account_method(Module['_olm_account_fallback_key'])(
+        this.ptr, keys, keys_length
+    );
+    return UTF8ToString(keys, keys_length);
+});
+
+Account.prototype['unpublished_fallback_key'] = restore_stack(function() {
+    var keys_length = account_method(
+        Module['_olm_account_unpublished_fallback_key_length']
+    )(this.ptr);
+    var keys = stack(keys_length + NULL_BYTE_PADDING_LENGTH);
+    account_method(Module['_olm_account_unpublished_fallback_key'])(
+        this.ptr, keys, keys_length
+    );
+    return UTF8ToString(keys, keys_length);
+});
+
+Account.prototype['forget_previous_fallback'] = restore_stack(function() {
+    account_method(Module['_olm_account_forget_previous_fallback_key'])(
+        this.ptr
+    );
+});
+
 Account.prototype['pickle'] = restore_stack(function(key) {
     var key_array = array_from_string(key);
     var pickle_length = account_method(