From b846c943b36cb6e2d74a49161678d78ad94ba62c Mon Sep 17 00:00:00 2001
From: default <nobody@localhost>
Date: Wed, 29 Nov 2023 08:58:31 +0100
Subject: [PATCH] Fixed crash in activitypub_request() when there is no
 payload.

---
 activitypub.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/activitypub.c b/activitypub.c
index 4c8eaf5..e354a22 100644
--- a/activitypub.c
+++ b/activitypub.c
@@ -95,8 +95,14 @@ int activitypub_request(snac *snac, const char *url, xs_dict **data)
             status = 400;
         else
         if (xs_str_in(ctype, "application/activity+json") != -1 ||
-            xs_str_in(ctype, "application/ld+json") != -1)
-            *data = xs_json_loads(payload);
+            xs_str_in(ctype, "application/ld+json") != -1) {
+
+            /* if there is no payload, fail */
+            if (xs_is_null(payload))
+                status = 400;
+            else
+                *data = xs_json_loads(payload);
+        }
         else
             status = 500;
     }