From be3e5c96182974e569b58699aee18af71f86e13f Mon Sep 17 00:00:00 2001
From: default <nobody@localhost>
Date: Mon, 18 Dec 2023 13:24:07 +0100
Subject: [PATCH] Added some crash checks.

---
 activitypub.c | 6 ++++++
 httpd.c       | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/activitypub.c b/activitypub.c
index cfe3eea..6d017c6 100644
--- a/activitypub.c
+++ b/activitypub.c
@@ -2323,6 +2323,12 @@ int activitypub_post_handler(const xs_dict *req, const char *q_path,
         return 400;
     }
 
+    if (xs_is_null(payload)) {
+        *body  = xs_str_new("no payload");
+        *ctype = "text/plain";
+        return 400;
+    }
+
     if (xs_str_in(i_ctype, "application/activity+json") == -1 &&
         xs_str_in(i_ctype, "application/ld+json") == -1)
         return 0;
diff --git a/httpd.c b/httpd.c
index 197a6c0..d401d7d 100644
--- a/httpd.c
+++ b/httpd.c
@@ -382,7 +382,7 @@ void httpd_connection(FILE *f)
     srv_archive("RECV", NULL, req, payload, p_size, status, headers, body, b_size);
 
     /* JSON validation check */
-    if (strcmp(ctype, "application/json") == 0) {
+    if (!xs_is_null(body) && strcmp(ctype, "application/json") == 0) {
         xs *j = xs_json_loads(body);
 
         if (j == NULL) {