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-rw-r--r--extensions/libip6t_hbh.c262
1 files changed, 0 insertions, 262 deletions
diff --git a/extensions/libip6t_hbh.c b/extensions/libip6t_hbh.c
deleted file mode 100644
index bdcbf9b..0000000
--- a/extensions/libip6t_hbh.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/* Shared library add-on to ip6tables to add Hop-by-Hop and Dst headers support. */
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-#include <errno.h>
-#include <ip6tables.h>
-/*#include <linux/in6.h>*/
-#include <linux/netfilter_ipv6/ip6t_opts.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-
-#define DEBUG 0
-#define HOPBYHOP 1
-#define UNAME (HOPBYHOP ? "HBH" : "DST")
-#define LNAME (HOPBYHOP ? "hbh" : "dst")
-
-/* Function which prints out usage message. */
-static void
-help(void)
-{
- printf(
-"%s v%s options:\n"
-" --%s-len [!] length total length of this header\n"
-" --%s-opts TYPE[:LEN][,TYPE[:LEN]...] \n"
-" Options and its length (list, max: %d)\n",
-UNAME , IPTABLES_VERSION, LNAME, LNAME, IP6T_OPTS_OPTSNR);
-}
-
-#if HOPBYHOP
-static struct option opts[] = {
- { "hbh-len", 1, 0, '1' },
- { "hbh-opts", 1, 0, '2' },
- { "hbh-not-strict", 1, 0, '3' },
- {0}
-};
-#else
-static struct option opts[] = {
- { "dst-len", 1, 0, '1' },
- { "dst-opts", 1, 0, '2' },
- { "dst-not-strict", 1, 0, '3' },
- {0}
-};
-#endif
-
-static u_int32_t
-parse_opts_num(const char *idstr, const char *typestr)
-{
- unsigned long int id;
- char* ep;
-
- id = strtoul(idstr,&ep,0) ;
-
- if ( idstr == ep ) {
- exit_error(PARAMETER_PROBLEM,
- "%s no valid digits in %s `%s'", UNAME, typestr, idstr);
- }
- if ( id == ULONG_MAX && errno == ERANGE ) {
- exit_error(PARAMETER_PROBLEM,
- "%s `%s' specified too big: would overflow",
- typestr, idstr);
- }
- if ( *idstr != '\0' && *ep != '\0' ) {
- exit_error(PARAMETER_PROBLEM,
- "%s error parsing %s `%s'", UNAME, typestr, idstr);
- }
- return (u_int32_t) id;
-}
-
-static int
-parse_options(const char *optsstr, u_int16_t *opts)
-{
- char *buffer, *cp, *next, *range;
- unsigned int i;
-
- buffer = strdup(optsstr);
- if (!buffer) exit_error(OTHER_PROBLEM, "strdup failed");
-
- for (cp=buffer, i=0; cp && i<IP6T_OPTS_OPTSNR; cp=next,i++)
- {
- next=strchr(cp, ',');
- if (next) *next++='\0';
- range = strchr(cp, ':');
- if (range) {
- if (i == IP6T_OPTS_OPTSNR-1)
- exit_error(PARAMETER_PROBLEM,
- "too many ports specified");
- *range++ = '\0';
- }
- opts[i] = (u_int16_t)((parse_opts_num(cp,"opt") & 0x000000FF)<<8);
- if (range) {
- if (opts[i] == 0)
- exit_error(PARAMETER_PROBLEM, "PAD0 hasn't got length");
- opts[i] |= (u_int16_t)(parse_opts_num(range,"length") &
- 0x000000FF);
- } else {
- opts[i] |= (0x00FF);
- }
-
-#if DEBUG
- printf("opts str: %s %s\n", cp, range);
- printf("opts opt: %04X\n", opts[i]);
-#endif
- }
- if (cp) exit_error(PARAMETER_PROBLEM, "too many addresses specified");
-
- free(buffer);
-
-#if DEBUG
- printf("addr nr: %d\n", i);
-#endif
-
- return i;
-}
-
-/* Initialize the match. */
-static void
-init(struct ip6t_entry_match *m, unsigned int *nfcache)
-{
- struct ip6t_opts *optinfo = (struct ip6t_opts *)m->data;
-
- optinfo->hdrlen = 0;
- optinfo->flags = 0;
- optinfo->invflags = 0;
- optinfo->optsnr = 0;
-}
-
-/* Function which parses command options; returns true if it
- ate an option */
-static int
-parse(int c, char **argv, int invert, unsigned int *flags,
- const struct ip6t_entry *entry,
- unsigned int *nfcache,
- struct ip6t_entry_match **match)
-{
- struct ip6t_opts *optinfo = (struct ip6t_opts *)(*match)->data;
-
- switch (c) {
- case '1':
- if (*flags & IP6T_OPTS_LEN)
- exit_error(PARAMETER_PROBLEM,
- "Only one `--%s-len' allowed", LNAME);
- check_inverse(optarg, &invert, &optind, 0);
- optinfo->hdrlen = parse_opts_num(argv[optind-1], "length");
- if (invert)
- optinfo->invflags |= IP6T_OPTS_INV_LEN;
- optinfo->flags |= IP6T_OPTS_LEN;
- *flags |= IP6T_OPTS_LEN;
- break;
- case '2':
- if (*flags & IP6T_OPTS_OPTS)
- exit_error(PARAMETER_PROBLEM,
- "Only one `--%s-opts' allowed", LNAME);
- check_inverse(optarg, &invert, &optind, 0);
- if (invert)
- exit_error(PARAMETER_PROBLEM,
- " '!' not allowed with `--%s-opts'", LNAME);
- optinfo->optsnr = parse_options(argv[optind-1], optinfo->opts);
- optinfo->flags |= IP6T_OPTS_OPTS;
- *flags |= IP6T_OPTS_OPTS;
- break;
- case '3':
- if (*flags & IP6T_OPTS_NSTRICT)
- exit_error(PARAMETER_PROBLEM,
- "Only one `--%s-not-strict' allowed", LNAME);
- if ( !(*flags & IP6T_OPTS_OPTS) )
- exit_error(PARAMETER_PROBLEM,
- "`--%s-opts ...' required before `--%s-not-strict'", LNAME, LNAME);
- optinfo->flags |= IP6T_OPTS_NSTRICT;
- *flags |= IP6T_OPTS_NSTRICT;
- break;
- default:
- return 0;
- }
-
- return 1;
-}
-
-/* Final check; we don't care. */
-static void
-final_check(unsigned int flags)
-{
-}
-
-static void
-print_options(int optsnr, u_int16_t *optsp)
-{
- unsigned int i;
-
- for(i=0; i<optsnr; i++){
- printf("%d", (optsp[i] & 0xFF00)>>8);
- if ((optsp[i] & 0x00FF) != 0x00FF){
- printf(":%d", (optsp[i] & 0x00FF));
- }
- printf("%c", (i!=optsnr-1)?',':' ');
- }
-}
-
-/* Prints out the union ip6t_matchinfo. */
-static void
-print(const struct ip6t_ip6 *ip,
- const struct ip6t_entry_match *match, int numeric)
-{
- const struct ip6t_opts *optinfo = (struct ip6t_opts *)match->data;
-
- printf("%s ", LNAME);
- if (optinfo->flags & IP6T_OPTS_LEN) {
- printf("length");
- printf(":%s", optinfo->invflags & IP6T_OPTS_INV_LEN ? "!" : "");
- printf("%u", optinfo->hdrlen);
- printf(" ");
- }
- if (optinfo->flags & IP6T_OPTS_OPTS) printf("opts ");
- print_options(optinfo->optsnr, (u_int16_t *)optinfo->opts);
- if (optinfo->flags & IP6T_OPTS_NSTRICT) printf("not-strict ");
- if (optinfo->invflags & ~IP6T_OPTS_INV_MASK)
- printf("Unknown invflags: 0x%X ",
- optinfo->invflags & ~IP6T_OPTS_INV_MASK);
-}
-
-/* Saves the union ip6t_matchinfo in parsable form to stdout. */
-static void save(const struct ip6t_ip6 *ip, const struct ip6t_entry_match *match)
-{
- const struct ip6t_opts *optinfo = (struct ip6t_opts *)match->data;
-
- if (optinfo->flags & IP6T_OPTS_LEN) {
- printf("--%s-len %s%u ", LNAME,
- (optinfo->invflags & IP6T_OPTS_INV_LEN) ? "! " : "",
- optinfo->hdrlen);
- }
-
- if (optinfo->flags & IP6T_OPTS_OPTS) printf("--%s-opts ", LNAME);
- print_options(optinfo->optsnr, (u_int16_t *)optinfo->opts);
- if (optinfo->flags & IP6T_OPTS_NSTRICT) printf("--%s-not-strict ", LNAME);
-
-}
-
-static struct ip6tables_match optstruct = {
-#if HOPBYHOP
- .name = "hbh",
-#else
- .name = "dst",
-#endif
- .version = IPTABLES_VERSION,
- .size = IP6T_ALIGN(sizeof(struct ip6t_opts)),
- .userspacesize = IP6T_ALIGN(sizeof(struct ip6t_opts)),
- .help = &help,
- .init = &init,
- .parse = &parse,
- .final_check = &final_check,
- .print = &print,
- .save = &save,
- .extra_opts = opts,
-};
-
-void
-_init(void)
-{
- register_match6(&optstruct);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 06:04:26 +0000