[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_comment.c b/ap/app/iptables/extensions/libxt_comment.c
new file mode 100755
index 0000000..67d7f99
--- /dev/null
+++ b/ap/app/iptables/extensions/libxt_comment.c
@@ -0,0 +1,123 @@
+/* Shared library add-on to iptables to add comment match support.
+ *
+ * ChangeLog
+ * 2003-05-13: Brad Fisher <brad@info-link.net>
+ * Initial comment match
+ * 2004-05-12: Brad Fisher <brad@info-link.net>
+ * Port to patch-o-matic-ng
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include <linux/netfilter/xt_comment.h>
+
+static void comment_help(void)
+{
+ printf(
+ "comment match options:\n"
+ "--comment COMMENT Attach a comment to a rule\n");
+}
+
+static const struct option comment_opts[] = {
+ { "comment", 1, NULL, '1' },
+ { .name = NULL }
+};
+
+static void
+parse_comment(const char *s, struct xt_comment_info *info)
+{
+ int slen = strlen(s);
+
+ if (slen >= XT_MAX_COMMENT_LEN) {
+ xtables_error(PARAMETER_PROBLEM,
+ "COMMENT must be shorter than %i characters", XT_MAX_COMMENT_LEN);
+ }
+ strcpy((char *)info->comment, s);
+}
+
+static int
+comment_parse(int c, char **argv, int invert, unsigned int *flags,
+ const void *entry, struct xt_entry_match **match)
+{
+ struct xt_comment_info *commentinfo = (struct xt_comment_info *)(*match)->data;
+
+ switch (c) {
+ case '1':
+ xtables_check_inverse(argv[optind-1], &invert, &optind, 0);
+ if (invert) {
+ xtables_error(PARAMETER_PROBLEM,
+ "Sorry, you can't have an inverted comment");
+ }
+ parse_comment(argv[optind-1], commentinfo);
+ *flags = 1;
+ break;
+
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static void comment_check(unsigned int flags)
+{
+ if (!flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "COMMENT match: You must specify `--comment'");
+}
+
+static void
+comment_print(const void *ip, const struct xt_entry_match *match, int numeric)
+{
+ struct xt_comment_info *commentinfo = (struct xt_comment_info *)match->data;
+
+ commentinfo->comment[XT_MAX_COMMENT_LEN-1] = '\0';
+ printf("/* %s */ ", commentinfo->comment);
+}
+
+/* Saves the union ipt_matchinfo in parsable form to stdout. */
+static void
+comment_save(const void *ip, const struct xt_entry_match *match)
+{
+ struct xt_comment_info *commentinfo = (struct xt_comment_info *)match->data;
+
+ commentinfo->comment[XT_MAX_COMMENT_LEN-1] = '\0';
+ printf("--comment ");
+ xtables_save_string((const char *)commentinfo->comment);
+}
+
+static struct xtables_match comment_match = {
+ .family = NFPROTO_IPV4,
+ .name = "comment",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_comment_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_comment_info)),
+ .help = comment_help,
+ .parse = comment_parse,
+ .final_check = comment_check,
+ .print = comment_print,
+ .save = comment_save,
+ .extra_opts = comment_opts,
+};
+
+static struct xtables_match comment_match6 = {
+ .family = NFPROTO_IPV6,
+ .name = "comment",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_comment_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_comment_info)),
+ .help = comment_help,
+ .parse = comment_parse,
+ .final_check = comment_check,
+ .print = comment_print,
+ .save = comment_save,
+ .extra_opts = comment_opts,
+};
+
+void _init(void)
+{
+ xtables_register_match(&comment_match);
+ xtables_register_match(&comment_match6);
+}