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-rw-r--r--ip6tables-save.c359
1 files changed, 0 insertions, 359 deletions
diff --git a/ip6tables-save.c b/ip6tables-save.c
deleted file mode 100644
index 486c522..0000000
--- a/ip6tables-save.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/* Code to save the ip6tables state, in human readable-form. */
-/* Author: Andras Kis-Szabo <kisza@sch.bme.hu>
- * Original code: iptables-save
- * Authors: Paul 'Rusty' Russel <rusty@linuxcare.com.au> and
- * Harald Welte <laforge@gnumonks.org>
- * This code is distributed under the terms of GNU GPL v2
- */
-#include <getopt.h>
-#include <sys/errno.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <dlfcn.h>
-#include <time.h>
-#include <netdb.h>
-#include <arpa/inet.h>
-#include "libiptc/libip6tc.h"
-#include "ip6tables.h"
-
-static int binary = 0, counters = 0;
-
-static struct option options[] = {
- { "binary", 0, 0, 'b' },
- { "counters", 0, 0, 'c' },
- { "dump", 0, 0, 'd' },
- { "table", 1, 0, 't' },
- { 0 }
-};
-
-
-/* This assumes that mask is contiguous, and byte-bounded. */
-static void
-print_iface(char letter, const char *iface, const unsigned char *mask,
- int invert)
-{
- unsigned int i;
-
- if (mask[0] == 0)
- return;
-
- printf("-%c %s", letter, invert ? "! " : "");
-
- for (i = 0; i < IFNAMSIZ; i++) {
- if (mask[i] != 0) {
- if (iface[i] != '\0')
- printf("%c", iface[i]);
- } else {
- /* we can access iface[i-1] here, because
- * a few lines above we make sure that mask[0] != 0 */
- if (iface[i-1] != '\0')
- printf("+");
- break;
- }
- }
-
- printf(" ");
-}
-
-/* These are hardcoded backups in ip6tables.c, so they are safe */
-struct pprot {
- char *name;
- u_int8_t num;
-};
-
-static const struct pprot chain_protos[] = {
- { "tcp", IPPROTO_TCP },
- { "udp", IPPROTO_UDP },
- { "icmpv6", IPPROTO_ICMPV6 },
- { "esp", IPPROTO_ESP },
- { "ah", IPPROTO_AH },
-};
-
-/* The ip6tables looks up the /etc/protocols. */
-static void print_proto(u_int16_t proto, int invert)
-{
- if (proto) {
- unsigned int i;
- const char *invertstr = invert ? "! " : "";
-
- struct protoent *pent = getprotobynumber(proto);
- if (pent) {
- printf("-p %s%s ",
- invertstr, pent->p_name);
- return;
- }
-
- for (i = 0; i < sizeof(chain_protos)/sizeof(struct pprot); i++)
- if (chain_protos[i].num == proto) {
- printf("-p %s%s ",
- invertstr, chain_protos[i].name);
- return;
- }
-
- printf("-p %s%u ", invertstr, proto);
- }
-}
-
-static int print_match(const struct ip6t_entry_match *e,
- const struct ip6t_ip6 *ip)
-{
- struct ip6tables_match *match
- = find_match(e->u.user.name, TRY_LOAD, NULL);
-
- if (match) {
- printf("-m %s ", e->u.user.name);
-
- /* some matches don't provide a save function */
- if (match->save)
- match->save(ip, e);
- } else {
- if (e->u.match_size) {
- fprintf(stderr,
- "Can't find library for match `%s'\n",
- e->u.user.name);
- exit(1);
- }
- }
- return 0;
-}
-
-/* print a given ip including mask if neccessary */
-static void print_ip(char *prefix, const struct in6_addr *ip, const struct in6_addr *mask, int invert)
-{
- char buf[51];
- int l = ipv6_prefix_length(mask);
-
- if (l == 0 && !invert)
- return;
-
- printf("%s %s%s",
- prefix,
- invert ? "! " : "",
- inet_ntop(AF_INET6, ip, buf, sizeof buf));
-
- if (l == -1)
- printf("/%s ", inet_ntop(AF_INET6, mask, buf, sizeof buf));
- else
- printf("/%d ", l);
-}
-
-/* We want this to be readable, so only print out neccessary fields.
- * Because that's the kind of world I want to live in. */
-static void print_rule(const struct ip6t_entry *e,
- ip6tc_handle_t *h, const char *chain, int counters)
-{
- struct ip6t_entry_target *t;
- const char *target_name;
-
- /* print counters */
- if (counters)
- printf("[%llu:%llu] ", (unsigned long long)e->counters.pcnt, (unsigned long long)e->counters.bcnt);
-
- /* print chain name */
- printf("-A %s ", chain);
-
- /* Print IP part. */
- print_ip("-s", &(e->ipv6.src), &(e->ipv6.smsk),
- e->ipv6.invflags & IP6T_INV_SRCIP);
-
- print_ip("-d", &(e->ipv6.dst), &(e->ipv6.dmsk),
- e->ipv6.invflags & IP6T_INV_DSTIP);
-
- print_iface('i', e->ipv6.iniface, e->ipv6.iniface_mask,
- e->ipv6.invflags & IP6T_INV_VIA_IN);
-
- print_iface('o', e->ipv6.outiface, e->ipv6.outiface_mask,
- e->ipv6.invflags & IP6T_INV_VIA_OUT);
-
- print_proto(e->ipv6.proto, e->ipv6.invflags & IP6T_INV_PROTO);
-
-#if 0
- /* not definied in ipv6
- * FIXME: linux/netfilter_ipv6/ip6_tables: IP6T_INV_FRAG why definied? */
- if (e->ipv6.flags & IPT_F_FRAG)
- printf("%s-f ",
- e->ipv6.invflags & IP6T_INV_FRAG ? "! " : "");
-#endif
-
- if (e->ipv6.flags & IP6T_F_TOS)
- printf("%s-? %d ",
- e->ipv6.invflags & IP6T_INV_TOS ? "! " : "",
- e->ipv6.tos);
-
- /* Print matchinfo part */
- if (e->target_offset) {
- IP6T_MATCH_ITERATE(e, print_match, &e->ipv6);
- }
-
- /* Print target name */
- target_name = ip6tc_get_target(e, h);
- if (target_name && (*target_name != '\0'))
- printf("-j %s ", target_name);
-
- /* Print targinfo part */
- t = ip6t_get_target((struct ip6t_entry *)e);
- if (t->u.user.name[0]) {
- struct ip6tables_target *target
- = find_target(t->u.user.name, TRY_LOAD);
-
- if (!target) {
- fprintf(stderr, "Can't find library for target `%s'\n",
- t->u.user.name);
- exit(1);
- }
-
- if (target->save)
- target->save(&e->ipv6, t);
- else {
- /* If the target size is greater than ip6t_entry_target
- * there is something to be saved, we just don't know
- * how to print it */
- if (t->u.target_size !=
- sizeof(struct ip6t_entry_target)) {
- fprintf(stderr, "Target `%s' is missing "
- "save function\n",
- t->u.user.name);
- exit(1);
- }
- }
- }
- printf("\n");
-}
-
-/* Debugging prototype. */
-static int for_each_table(int (*func)(const char *tablename))
-{
- int ret = 1;
- FILE *procfile = NULL;
- char tablename[IP6T_TABLE_MAXNAMELEN+1];
-
- procfile = fopen("/proc/net/ip6_tables_names", "r");
- if (!procfile)
- return 0;
-
- while (fgets(tablename, sizeof(tablename), procfile)) {
- if (tablename[strlen(tablename) - 1] != '\n')
- exit_error(OTHER_PROBLEM,
- "Badly formed tablename `%s'\n",
- tablename);
- tablename[strlen(tablename) - 1] = '\0';
- ret &= func(tablename);
- }
-
- return ret;
-}
-
-
-static int do_output(const char *tablename)
-{
- ip6tc_handle_t h;
- const char *chain = NULL;
-
- if (!tablename)
- return for_each_table(&do_output);
-
- h = ip6tc_init(tablename);
- if (!h)
- exit_error(OTHER_PROBLEM, "Can't initialize: %s\n",
- ip6tc_strerror(errno));
-
- if (!binary) {
- time_t now = time(NULL);
-
- printf("# Generated by ip6tables-save v%s on %s",
- IPTABLES_VERSION, ctime(&now));
- printf("*%s\n", tablename);
-
- /* Dump out chain names first,
- * thereby preventing dependency conflicts */
- for (chain = ip6tc_first_chain(&h);
- chain;
- chain = ip6tc_next_chain(&h)) {
-
- printf(":%s ", chain);
- if (ip6tc_builtin(chain, h)) {
- struct ip6t_counters count;
- printf("%s ",
- ip6tc_get_policy(chain, &count, &h));
- printf("[%llu:%llu]\n", (unsigned long long)count.pcnt, (unsigned long long)count.bcnt);
- } else {
- printf("- [0:0]\n");
- }
- }
-
-
- for (chain = ip6tc_first_chain(&h);
- chain;
- chain = ip6tc_next_chain(&h)) {
- const struct ip6t_entry *e;
-
- /* Dump out rules */
- e = ip6tc_first_rule(chain, &h);
- while(e) {
- print_rule(e, &h, chain, counters);
- e = ip6tc_next_rule(e, &h);
- }
- }
-
- now = time(NULL);
- printf("COMMIT\n");
- printf("# Completed on %s", ctime(&now));
- } else {
- /* Binary, huh? OK. */
- exit_error(OTHER_PROBLEM, "Binary NYI\n");
- }
-
- ip6tc_free(&h);
-
- return 1;
-}
-
-/* Format:
- * :Chain name POLICY packets bytes
- * rule
- */
-int main(int argc, char *argv[])
-{
- const char *tablename = NULL;
- int c;
-
- program_name = "ip6tables-save";
- program_version = IPTABLES_VERSION;
-
- lib_dir = getenv("IP6TABLES_LIB_DIR");
- if (!lib_dir)
- lib_dir = IP6T_LIB_DIR;
-
-#ifdef NO_SHARED_LIBS
- init_extensions();
-#endif
-
- while ((c = getopt_long(argc, argv, "bcdt:", options, NULL)) != -1) {
- switch (c) {
- case 'b':
- binary = 1;
- break;
-
- case 'c':
- counters = 1;
- break;
-
- case 't':
- /* Select specific table. */
- tablename = optarg;
- break;
- case 'd':
- do_output(tablename);
- exit(0);
- }
- }
-
- if (optind < argc) {
- fprintf(stderr, "Unknown arguments found on commandline");
- exit(1);
- }
-
- return !do_output(tablename);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 07:09:10 +0000