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author/C=EU/ST=EU/CN=Patrick McHardy/emailAddress=kaber@trash.net </C=EU/ST=EU/CN=Patrick McHardy/emailAddress=kaber@trash.net>2008-05-13 11:08:26 +0000
committer/C=EU/ST=EU/CN=Patrick McHardy/emailAddress=kaber@trash.net </C=EU/ST=EU/CN=Patrick McHardy/emailAddress=kaber@trash.net>2008-05-13 11:08:26 +0000
commit36a36fc3c41b8b868e8fbd181c50e1ca3ac6d4c5 (patch)
tree8ae6e4457a0d70a40b573b606488744a62a7a3bb /ip6tables-save.c
parent6a10cb1a5848240c2946f9c24bf82b0f8efb8e4e (diff)
[patch 3/4] iptables --list-rules command
Adds iptables --list-rules (-S) command, acting as a combination of iptables --list and iptables-save. The primary motivation behind this patch is to get iptables-save like output capabilities in iptables-restore, allowing "iptables-restore -n" to be used as a consistent API to iptables for all kind of operations, not only blind updates.. As a bonus iptables also gets the capability of printing the rules as-is. This completely replaces the earlier patch which added the --rules option. Henrik Nordstrom <henrik@henriknordstrom.net>
Diffstat (limited to 'ip6tables-save.c')
-rw-r--r--ip6tables-save.c193
1 files changed, 0 insertions, 193 deletions
diff --git a/ip6tables-save.c b/ip6tables-save.c
index bd4ccbf..7b03d7c 100644
--- a/ip6tables-save.c
+++ b/ip6tables-save.c
@@ -33,199 +33,6 @@ static const struct option options[] = {
};
-/* 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 xtables_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 xtables_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))
{