xtables: warn of missing version identifier in extensions
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/xtables.c b/xtables.c
index 1ff6e82..41e0b87 100644
--- a/xtables.c
+++ b/xtables.c
@@ -724,6 +724,11 @@
{
struct xtables_match **i, *old;
+ if (me->version == NULL) {
+ fprintf(stderr, "%s: match %s<%u> is missing a version\n",
+ xt_params->program_name, me->name, me->revision);
+ exit(1);
+ }
if (strcmp(me->version, XTABLES_VERSION) != 0) {
fprintf(stderr, "%s: match \"%s\" has version \"%s\", "
"but \"%s\" is required.\n",
@@ -805,6 +810,11 @@
{
struct xtables_target *old;
+ if (me->version == NULL) {
+ fprintf(stderr, "%s: target %s<%u> is missing a version\n",
+ xt_params->program_name, me->name, me->revision);
+ exit(1);
+ }
if (strcmp(me->version, XTABLES_VERSION) != 0) {
fprintf(stderr, "%s: target \"%s\" has version \"%s\", "
"but \"%s\" is required.\n",