update to 1.4.7 and change repositoyry layout as this is easier to maintain

[iptables.git] / extensions / libxt_tcpmss.c

diff --git a/extensions/libxt_tcpmss.c b/extensions/libxt_tcpmss.c
deleted file mode 100644 (file)
index 8f56a41..0000000
--- a/extensions/libxt_tcpmss.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/* Shared library add-on to iptables to add tcp MSS matching support. */
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-
-#include <xtables.h>
-#include <linux/netfilter/xt_tcpmss.h>
-
-/* Function which prints out usage message. */
-static void tcpmss_help(void)
-{
-       printf(
-"tcpmss match options:\n"
-"[!] --mss value[:value]       Match TCP MSS range.\n"
-"                              (only valid for TCP SYN or SYN/ACK packets)\n");
-}
-
-static const struct option tcpmss_opts[] = {
-       { "mss", 1, NULL, '1' },
-       { .name = NULL }
-};
-
-static u_int16_t
-parse_tcp_mssvalue(const char *mssvalue)
-{
-       unsigned int mssvaluenum;
-
-       if (string_to_number(mssvalue, 0, 65535, &mssvaluenum) != -1)
-               return (u_int16_t)mssvaluenum;
-
-       exit_error(PARAMETER_PROBLEM,
-                  "Invalid mss `%s' specified", mssvalue);
-}
-
-static void
-parse_tcp_mssvalues(const char *mssvaluestring,
-                   u_int16_t *mss_min, u_int16_t *mss_max)
-{
-       char *buffer;
-       char *cp;
-
-       buffer = strdup(mssvaluestring);
-       if ((cp = strchr(buffer, ':')) == NULL)
-               *mss_min = *mss_max = parse_tcp_mssvalue(buffer);
-       else {
-               *cp = '\0';
-               cp++;
-
-               *mss_min = buffer[0] ? parse_tcp_mssvalue(buffer) : 0;
-               *mss_max = cp[0] ? parse_tcp_mssvalue(cp) : 0xFFFF;
-       }
-       free(buffer);
-}
-
-/* Function which parses command options; returns true if it
-   ate an option */
-static int
-tcpmss_parse(int c, char **argv, int invert, unsigned int *flags,
-             const void *entry, struct xt_entry_match **match)
-{
-       struct xt_tcpmss_match_info *mssinfo =
-               (struct xt_tcpmss_match_info *)(*match)->data;
-
-       switch (c) {
-       case '1':
-               if (*flags)
-                       exit_error(PARAMETER_PROBLEM,
-                                  "Only one `--mss' allowed");
-               check_inverse(optarg, &invert, &optind, 0);
-               parse_tcp_mssvalues(argv[optind-1],
-                                   &mssinfo->mss_min, &mssinfo->mss_max);
-               if (invert)
-                       mssinfo->invert = 1;
-               *flags = 1;
-               break;
-       default:
-               return 0;
-       }
-       return 1;
-}
-
-static void
-print_tcpmss(u_int16_t mss_min, u_int16_t mss_max, int invert, int numeric)
-{
-       if (invert)
-               printf("! ");
-
-       if (mss_min == mss_max)
-               printf("%u ", mss_min);
-       else
-               printf("%u:%u ", mss_min, mss_max);
-}
-
-/* Final check; must have specified --mss. */
-static void tcpmss_check(unsigned int flags)
-{
-       if (!flags)
-               exit_error(PARAMETER_PROBLEM,
-                          "tcpmss match: You must specify `--mss'");
-}
-
-/* Prints out the matchinfo. */
-static void
-tcpmss_print(const void *ip, const struct xt_entry_match *match, int numeric)
-{
-       const struct xt_tcpmss_match_info *mssinfo =
-               (const struct xt_tcpmss_match_info *)match->data;
-
-       printf("tcpmss match ");
-       print_tcpmss(mssinfo->mss_min, mssinfo->mss_max,
-                    mssinfo->invert, numeric);
-}
-
-/* Saves the union ipt_matchinfo in parsable form to stdout. */
-static void tcpmss_save(const void *ip, const struct xt_entry_match *match)
-{
-       const struct xt_tcpmss_match_info *mssinfo =
-               (const struct xt_tcpmss_match_info *)match->data;
-
-       printf("--mss ");
-       print_tcpmss(mssinfo->mss_min, mssinfo->mss_max,
-                    mssinfo->invert, 0);
-}
-
-static struct xtables_match tcpmss_match = {
-       .family         = AF_INET,
-       .name           = "tcpmss",
-       .version        = XTABLES_VERSION,
-       .size           = XT_ALIGN(sizeof(struct xt_tcpmss_match_info)),
-       .userspacesize  = XT_ALIGN(sizeof(struct xt_tcpmss_match_info)),
-       .help           = tcpmss_help,
-       .parse          = tcpmss_parse,
-       .final_check    = tcpmss_check,
-       .print          = tcpmss_print,
-       .save           = tcpmss_save,
-       .extra_opts     = tcpmss_opts,
-};
-
-static struct xtables_match tcpmss_match6 = {
-       .family         = AF_INET6,
-       .name           = "tcpmss",
-       .version        = XTABLES_VERSION,
-       .size           = XT_ALIGN(sizeof(struct xt_tcpmss_match_info)),
-       .userspacesize  = XT_ALIGN(sizeof(struct xt_tcpmss_match_info)),
-       .help           = tcpmss_help,
-       .parse          = tcpmss_parse,
-       .final_check    = tcpmss_check,
-       .print          = tcpmss_print,
-       .save           = tcpmss_save,
-       .extra_opts     = tcpmss_opts,
-};
-
-void _init(void)
-{
-       xtables_register_match(&tcpmss_match);
-       xtables_register_match(&tcpmss_match6);
-}