Update sys/shell/commands/sc_nanocoap_vfs.c

Co-authored-by: fabian18 <fabian.huessler@st.ovgu.de>
RIOT-OS · Jun 6, 2022 · 7ebbe7d · 7ebbe7d
1 parent d30052a
commit 7ebbe7d
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/sys/shell/commands/sc_nanocoap_vfs.c b/sys/shell/commands/sc_nanocoap_vfs.c
@@ -158,7 +158,11 @@ int _nanocoap_put_handler(int argc, char **argv)
         if (basename == NULL) {
             return -EINVAL;
         }
-        snprintf(buffer, sizeof(buffer), "%s%s", url, basename + 1);
+        if (snprintf(buffer, sizeof(buffer), "%s%s",
+                     url, basename + 1) >= (int)sizeof(buffer)) {
+            puts("Constructed URI too long");
+            return -ENOBUFS;
+        }
         url = buffer;
     }