示例#1
0
文件: libip4tc.c 项目: hajuuk/R7000
int
dump_entry(STRUCT_ENTRY *e, const TC_HANDLE_T handle)
{
	size_t i;
	STRUCT_ENTRY_TARGET *t;

	printf("Entry %u (%lu):\n", iptcb_entry2index(handle, e),
	       iptcb_entry2offset(handle, e));
	printf("SRC IP: %u.%u.%u.%u/%u.%u.%u.%u\n",
	       IP_PARTS(e->ip.src.s_addr),IP_PARTS(e->ip.smsk.s_addr));
	printf("DST IP: %u.%u.%u.%u/%u.%u.%u.%u\n",
	       IP_PARTS(e->ip.dst.s_addr),IP_PARTS(e->ip.dmsk.s_addr));
	printf("Interface: `%s'/", e->ip.iniface);
	for (i = 0; i < IFNAMSIZ; i++)
		printf("%c", e->ip.iniface_mask[i] ? 'X' : '.');
	printf("to `%s'/", e->ip.outiface);
	for (i = 0; i < IFNAMSIZ; i++)
		printf("%c", e->ip.outiface_mask[i] ? 'X' : '.');
	printf("\nProtocol: %u\n", e->ip.proto);
	printf("Flags: %02X\n", e->ip.flags);
	printf("Invflags: %02X\n", e->ip.invflags);
	printf("Counters: %llu packets, %llu bytes\n",
	       (unsigned long long)e->counters.pcnt, (unsigned long long)e->counters.bcnt);
	printf("Cache: %08X ", e->nfcache);
	if (e->nfcache & NFC_ALTERED) printf("ALTERED ");
	if (e->nfcache & NFC_UNKNOWN) printf("UNKNOWN ");
	printf("\n");

	IPT_MATCH_ITERATE(e, print_match);

	t = GET_TARGET(e);
	printf("Target name: `%s' [%u]\n", t->u.user.name, t->u.target_size);
	if (strcmp(t->u.user.name, STANDARD_TARGET) == 0) {
		int pos = *(int *)t->data;
		if (pos < 0)
			printf("verdict=%s\n",
			       pos == -NF_ACCEPT-1 ? "NF_ACCEPT"
			       : pos == -NF_DROP-1 ? "NF_DROP"
			       : pos == -NF_QUEUE-1 ? "NF_QUEUE"
			       : pos == RETURN ? "RETURN"
			       : "UNKNOWN");
		else
			printf("verdict=%u\n", pos);
	} else if (strcmp(t->u.user.name, IPT_ERROR_TARGET) == 0)
		printf("error=`%s'\n", t->data);

	printf("\n");
	return 0;
}
示例#2
0
static inline int
check_entry(const STRUCT_ENTRY *e, unsigned int *i, unsigned int *off,
	    unsigned int user_offset, int *was_return,
	    struct iptc_handle *h)
{
	unsigned int toff;
	STRUCT_STANDARD_TARGET *t;

	assert(e->target_offset >= sizeof(STRUCT_ENTRY));
	assert(e->next_offset >= e->target_offset
	       + sizeof(STRUCT_ENTRY_TARGET));
	toff = sizeof(STRUCT_ENTRY);
	IPT_MATCH_ITERATE(e, check_match, &toff);

	assert(toff == e->target_offset);

	t = (STRUCT_STANDARD_TARGET *)
		GET_TARGET((STRUCT_ENTRY *)e);
	/* next_offset will have to be multiple of entry alignment. */
	assert(e->next_offset == ALIGN(e->next_offset));
	assert(e->target_offset == ALIGN(e->target_offset));
	assert(t->target.u.target_size == ALIGN(t->target.u.target_size));
	assert(!TC_IS_CHAIN(t->target.u.user.name, h));

	if (strcmp(t->target.u.user.name, STANDARD_TARGET) == 0) {
		assert(t->target.u.target_size
		       == ALIGN(sizeof(STRUCT_STANDARD_TARGET)));

		assert(t->verdict == -NF_DROP-1
		       || t->verdict == -NF_ACCEPT-1
		       || t->verdict == RETURN
		       || t->verdict < (int)h->entries->size);

		if (t->verdict >= 0) {
			STRUCT_ENTRY *te = get_entry(h, t->verdict);
			int idx;

			idx = iptcb_entry2index(h, te);
			assert(strcmp(GET_TARGET(te)->u.user.name,
				      IPT_ERROR_TARGET)
			       != 0);
			assert(te != e);

			/* Prior node must be error node, or this node. */
			assert(t->verdict == iptcb_entry2offset(h, e)+e->next_offset
			       || strcmp(GET_TARGET(index2entry(h, idx-1))
					 ->u.user.name, IPT_ERROR_TARGET)
			       == 0);
		}

		if (t->verdict == RETURN
		    && unconditional(&e->ip)
		    && e->target_offset == sizeof(*e))
			*was_return = 1;
		else
			*was_return = 0;
	} else if (strcmp(t->target.u.user.name, IPT_ERROR_TARGET) == 0) {
		assert(t->target.u.target_size
		       == ALIGN(sizeof(struct ipt_error_target)));

		/* If this is in user area, previous must have been return */
		if (*off > user_offset)
			assert(*was_return);

		*was_return = 0;
	}
	else *was_return = 0;

	if (*off == user_offset)
		assert(strcmp(t->target.u.user.name, IPT_ERROR_TARGET) == 0);

	(*off) += e->next_offset;
	(*i)++;
	return 0;
}
示例#3
0
static int
dump_entry(struct ip6t_entry *e, struct ip6tc_handle *const handle)
{
	size_t i;
	char buf[40];
	int len;
	struct ip6t_entry_target *t;
	
	printf("Entry %u (%lu):\n", iptcb_entry2index(handle, e),
	       iptcb_entry2offset(handle, e));
	puts("SRC IP: ");
	inet_ntop(AF_INET6, &e->ipv6.src, buf, sizeof buf);
	puts(buf);
	putchar('/');
	len = ipv6_prefix_length(&e->ipv6.smsk);
	if (len != -1)
		printf("%d", len);
	else {
		inet_ntop(AF_INET6, &e->ipv6.smsk, buf, sizeof buf);
		puts(buf);
	}
	putchar('\n');
	
	puts("DST IP: ");
	inet_ntop(AF_INET6, &e->ipv6.dst, buf, sizeof buf);
	puts(buf);
	putchar('/');
	len = ipv6_prefix_length(&e->ipv6.dmsk);
	if (len != -1)
		printf("%d", len);
	else {
		inet_ntop(AF_INET6, &e->ipv6.dmsk, buf, sizeof buf);
		puts(buf);
	}
	putchar('\n');
	
	printf("Interface: `%s'/", e->ipv6.iniface);
	for (i = 0; i < IFNAMSIZ; i++)
		printf("%c", e->ipv6.iniface_mask[i] ? 'X' : '.');
	printf("to `%s'/", e->ipv6.outiface);
	for (i = 0; i < IFNAMSIZ; i++)
		printf("%c", e->ipv6.outiface_mask[i] ? 'X' : '.');
	printf("\nProtocol: %u\n", e->ipv6.proto);
	if (e->ipv6.flags & IP6T_F_TOS)
		printf("TOS: %u\n", e->ipv6.tos);
	printf("Flags: %02X\n", e->ipv6.flags);
	printf("Invflags: %02X\n", e->ipv6.invflags);
	printf("Counters: %llu packets, %llu bytes\n",
	       (unsigned long long)e->counters.pcnt, (unsigned long long)e->counters.bcnt);
	printf("Cache: %08X\n", e->nfcache);
	
	IP6T_MATCH_ITERATE(e, print_match);

	t = ip6t_get_target(e);
	printf("Target name: `%s' [%u]\n", t->u.user.name, t->u.target_size);
	if (strcmp(t->u.user.name, IP6T_STANDARD_TARGET) == 0) {
		const unsigned char *data = t->data;
		int pos = *(const int *)data;
		if (pos < 0)
			printf("verdict=%s\n",
			       pos == -NF_ACCEPT-1 ? "NF_ACCEPT"
			       : pos == -NF_DROP-1 ? "NF_DROP"
			       : pos == IP6T_RETURN ? "RETURN"
			       : "UNKNOWN");
		else
			printf("verdict=%u\n", pos);
	} else if (strcmp(t->u.user.name, IP6T_ERROR_TARGET) == 0)
		printf("error=`%s'\n", t->data);

	printf("\n");
	return 0;
}