libxtables: XTTYPE_MARKMASK32 support
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/xtoptions.c b/xtoptions.c
index 631e7a3..e9bcaa8 100644
--- a/xtoptions.c
+++ b/xtoptions.c
@@ -186,11 +186,40 @@
p[z] = '\0';
}
+/**
+ * Validate the input for being conformant to "mark[/mask]".
+ */
+static void xtopt_parse_markmask(struct xt_option_call *cb)
+{
+ unsigned int mark = 0, mask = ~0U;
+ char *end;
+
+ if (!xtables_strtoui(cb->arg, &end, &mark, 0, UINT32_MAX))
+ xt_params->exit_err(PARAMETER_PROBLEM,
+ "%s: bad mark value for option \"--%s\", "
+ "or out of range.\n",
+ cb->ext_name, cb->entry->name);
+ if (*end == '/' &&
+ !xtables_strtoui(end + 1, &end, &mask, 0, UINT32_MAX))
+ xt_params->exit_err(PARAMETER_PROBLEM,
+ "%s: bad mask value for option \"--%s\", "
+ "or out of range.\n",
+ cb->ext_name, cb->entry->name);
+ if (*end != '\0')
+ xt_params->exit_err(PARAMETER_PROBLEM,
+ "%s: trailing garbage after value "
+ "for option \"--%s\".\n",
+ cb->ext_name, cb->entry->name);
+ cb->val.mark = mark;
+ cb->val.mask = mask;
+}
+
static void (*const xtopt_subparse[])(struct xt_option_call *) = {
[XTTYPE_UINT8] = xtopt_parse_int,
[XTTYPE_UINT32] = xtopt_parse_int,
[XTTYPE_UINT32RC] = xtopt_parse_mint,
[XTTYPE_STRING] = xtopt_parse_string,
+ [XTTYPE_MARKMASK32] = xtopt_parse_markmask,
};
static const size_t xtopt_psize[] = {