[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/iptables/extensions/libxt_helper.c b/ap/app/iptables/extensions/libxt_helper.c
new file mode 100755
index 0000000..8378be7
--- /dev/null
+++ b/ap/app/iptables/extensions/libxt_helper.c
@@ -0,0 +1,101 @@
+/* Shared library add-on to iptables to add related packet matching support. */
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include <linux/netfilter/xt_helper.h>
+
+static void helper_help(void)
+{
+ printf(
+"helper match options:\n"
+"[!] --helper string Match helper identified by string\n");
+}
+
+static const struct option helper_opts[] = {
+ { "helper", 1, NULL, '1' },
+ { .name = NULL }
+};
+
+static int
+helper_parse(int c, char **argv, int invert, unsigned int *flags,
+ const void *entry, struct xt_entry_match **match)
+{
+ struct xt_helper_info *info = (struct xt_helper_info *)(*match)->data;
+
+ switch (c) {
+ case '1':
+ if (*flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "helper match: Only use --helper ONCE!");
+ xtables_check_inverse(optarg, &invert, &invert, 0);
+ strncpy(info->name, optarg, 29);
+ info->name[29] = '\0';
+ if (invert)
+ info->invert = 1;
+ *flags = 1;
+ break;
+
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static void helper_check(unsigned int flags)
+{
+ if (!flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "helper match: You must specify `--helper'");
+}
+
+static void
+helper_print(const void *ip, const struct xt_entry_match *match, int numeric)
+{
+ struct xt_helper_info *info = (struct xt_helper_info *)match->data;
+
+ printf("helper match %s\"%s\" ", info->invert ? "! " : "", info->name);
+}
+
+static void helper_save(const void *ip, const struct xt_entry_match *match)
+{
+ struct xt_helper_info *info = (struct xt_helper_info *)match->data;
+
+ printf("%s--helper ",info->invert ? "! " : "");
+ xtables_save_string(info->name);
+}
+
+static struct xtables_match helper_match = {
+ .family = NFPROTO_IPV4,
+ .name = "helper",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_helper_info)),
+ .help = helper_help,
+ .parse = helper_parse,
+ .final_check = helper_check,
+ .print = helper_print,
+ .save = helper_save,
+ .extra_opts = helper_opts,
+};
+
+static struct xtables_match helper_match6 = {
+ .family = NFPROTO_IPV6,
+ .name = "helper",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_helper_info)),
+ .help = helper_help,
+ .parse = helper_parse,
+ .final_check = helper_check,
+ .print = helper_print,
+ .save = helper_save,
+ .extra_opts = helper_opts,
+};
+
+void _init(void)
+{
+ xtables_register_match(&helper_match);
+ xtables_register_match(&helper_match6);
+}