Пример #1
0
static int
set_match_v0_checkentry(const struct xt_mtchk_param *par)
{
	struct xt_set_info_match_v0 *info = par->matchinfo;
	ip_set_id_t index;

	index = ip_set_nfnl_get_byindex(info->match_set.index);

	if (index == IPSET_INVALID_ID) {
		pr_warning("Cannot find set indentified by id %u to match\n",
			   info->match_set.index);
		return -ENOENT;
	}
	if (info->match_set.u.flags[IPSET_DIM_MAX-1] != 0) {
		pr_warning("Protocol error: set match dimension "
			   "is over the limit!\n");
		ip_set_nfnl_put(info->match_set.index);
		return -ERANGE;
	}

	/* Fill out compatibility data */
	compat_flags(&info->match_set);

	return 0;
}
Пример #2
0
static FTYPE
set_target_v0_checkentry(const struct xt_tgchk_param *par)
{
	struct xt_set_info_target_v0 *info = par->targinfo;
	ip_set_id_t index;

	if (info->add_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(XT_PAR_NET(par),
						info->add_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find add_set index %u as target\n",
				info->add_set.index);
			return CHECK_FAIL(-ENOENT);
		}
	}

	if (info->del_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(XT_PAR_NET(par),
						info->del_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find del_set index %u as target\n",
				info->del_set.index);
			if (info->add_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(XT_PAR_NET(par),
						info->add_set.index);
			return CHECK_FAIL(-ENOENT);
		}
	}
	if (info->add_set.u.flags[IPSET_DIM_MAX - 1] != 0 ||
	    info->del_set.u.flags[IPSET_DIM_MAX - 1] != 0) {
		pr_warn("Protocol error: SET target dimension is over the limit!\n");
		if (info->add_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(XT_PAR_NET(par), info->add_set.index);
		if (info->del_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(XT_PAR_NET(par), info->del_set.index);
		return CHECK_FAIL(-ERANGE);
	}

	/* Fill out compatibility data */
	compat_flags(&info->add_set);
	compat_flags(&info->del_set);

	return CHECK_OK;
}
Пример #3
0
static int
set_target_v0_checkentry(const struct xt_tgchk_param *par)
{
	struct xt_set_info_target_v0 *info = par->targinfo;
	ip_set_id_t index;

	if (info->add_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(info->add_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warning("Cannot find add_set index %u as target\n",
				   info->add_set.index);
			return -ENOENT;
		}
	}

	if (info->del_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(info->del_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warning("Cannot find del_set index %u as target\n",
				   info->del_set.index);
			if (info->add_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(info->add_set.index);
			return -ENOENT;
		}
	}
	if (info->add_set.u.flags[IPSET_DIM_MAX-1] != 0 ||
	    info->del_set.u.flags[IPSET_DIM_MAX-1] != 0) {
		pr_warning("Protocol error: SET target dimension "
			   "is over the limit!\n");
		if (info->add_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(info->add_set.index);
		if (info->del_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(info->del_set.index);
		return -ERANGE;
	}

	/*                             */
	compat_flags(&info->add_set);
	compat_flags(&info->del_set);

	return 0;
}
Пример #4
0
static FTYPE
set_target_v1_checkentry(const struct xt_tgchk_param *par)
{
	const struct xt_set_info_target_v1 *info = par->targinfo;
	ip_set_id_t index;

	if (info->add_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(XT_PAR_NET(par),
						info->add_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find add_set index %u as target\n",
				info->add_set.index);
			return CHECK_FAIL(-ENOENT);
		}
	}

	if (info->del_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(XT_PAR_NET(par),
						info->del_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find del_set index %u as target\n",
				info->del_set.index);
			if (info->add_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(XT_PAR_NET(par),
						info->add_set.index);
			return CHECK_FAIL(-ENOENT);
		}
	}
	if (info->add_set.dim > IPSET_DIM_MAX ||
	    info->del_set.dim > IPSET_DIM_MAX) {
		pr_warn("Protocol error: SET target dimension is over the limit!\n");
		if (info->add_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(XT_PAR_NET(par), info->add_set.index);
		if (info->del_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(XT_PAR_NET(par), info->del_set.index);
		return CHECK_FAIL(-ERANGE);
	}

	return CHECK_OK;
}
Пример #5
0
static int
set_target_v1_checkentry(const struct xt_tgchk_param *par)
{
	const struct xt_set_info_target_v1 *info = par->targinfo;
	ip_set_id_t index;

	if (info->add_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(par->net, info->add_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warning("Cannot find add_set index %u as target\n",
				   info->add_set.index);
			return -ENOENT;
		}
	}

	if (info->del_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(par->net, info->del_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warning("Cannot find del_set index %u as target\n",
				   info->del_set.index);
			if (info->add_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(par->net, info->add_set.index);
			return -ENOENT;
		}
	}
	if (info->add_set.dim > IPSET_DIM_MAX ||
	    info->del_set.dim > IPSET_DIM_MAX) {
		pr_warning("Protocol error: SET target dimension "
			   "is over the limit!\n");
		if (info->add_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(par->net, info->add_set.index);
		if (info->del_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(par->net, info->del_set.index);
		return -ERANGE;
	}

	return 0;
}
Пример #6
0
static int em_ipset_change(struct net *net, void *data, int data_len,
			   struct tcf_ematch *em)
{
	struct xt_set_info *set = data;
	ip_set_id_t index;

	if (data_len != sizeof(*set))
		return -EINVAL;

	index = ip_set_nfnl_get_byindex(net, set->index);
	if (index == IPSET_INVALID_ID)
		return -ENOENT;

	em->datalen = sizeof(*set);
	em->data = (unsigned long)kmemdup(data, em->datalen, GFP_KERNEL);
	if (em->data)
		return 0;

	ip_set_nfnl_put(net, index);
	return -ENOMEM;
}
Пример #7
0
static int
set_match_v1_checkentry(const struct xt_mtchk_param *par)
{
	struct xt_set_info_match_v1 *info = par->matchinfo;
	ip_set_id_t index;

	index = ip_set_nfnl_get_byindex(par->net, info->match_set.index);

	if (index == IPSET_INVALID_ID) {
		pr_warn("Cannot find set identified by id %u to match\n",
			info->match_set.index);
		return -ENOENT;
	}
	if (info->match_set.dim > IPSET_DIM_MAX) {
		pr_warn("Protocol error: set match dimension is over the limit!\n");
		ip_set_nfnl_put(par->net, info->match_set.index);
		return -ERANGE;
	}

	return 0;
}
Пример #8
0
static int
set_target_v3_checkentry(const struct xt_tgchk_param *par)
{
	const struct xt_set_info_target_v3 *info = par->targinfo;
	ip_set_id_t index;

	if (info->add_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(par->net,
						info->add_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find add_set index %u as target\n",
				info->add_set.index);
			return -ENOENT;
		}
	}

	if (info->del_set.index != IPSET_INVALID_ID) {
		index = ip_set_nfnl_get_byindex(par->net,
						info->del_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find del_set index %u as target\n",
				info->del_set.index);
			if (info->add_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(par->net,
						info->add_set.index);
			return -ENOENT;
		}
	}

	if (info->map_set.index != IPSET_INVALID_ID) {
		if (strncmp(par->table, "mangle", 7)) {
			pr_warn("--map-set only usable from mangle table\n");
			return -EINVAL;
		}
		if (((info->flags & IPSET_FLAG_MAP_SKBPRIO) |
		     (info->flags & IPSET_FLAG_MAP_SKBQUEUE)) &&
		     !(par->hook_mask & (1 << NF_INET_FORWARD |
					 1 << NF_INET_LOCAL_OUT |
					 1 << NF_INET_POST_ROUTING))) {
			pr_warn("mapping of prio or/and queue is allowed only"
				"from OUTPUT/FORWARD/POSTROUTING chains\n");
			return -EINVAL;
		}
		index = ip_set_nfnl_get_byindex(par->net,
						info->map_set.index);
		if (index == IPSET_INVALID_ID) {
			pr_warn("Cannot find map_set index %u as target\n",
				info->map_set.index);
			if (info->add_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(par->net,
						info->add_set.index);
			if (info->del_set.index != IPSET_INVALID_ID)
				ip_set_nfnl_put(par->net,
						info->del_set.index);
			return -ENOENT;
		}
	}

	if (info->add_set.dim > IPSET_DIM_MAX ||
	    info->del_set.dim > IPSET_DIM_MAX ||
	    info->map_set.dim > IPSET_DIM_MAX) {
		pr_warn("Protocol error: SET target dimension "
			"is over the limit!\n");
		if (info->add_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(par->net, info->add_set.index);
		if (info->del_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(par->net, info->del_set.index);
		if (info->map_set.index != IPSET_INVALID_ID)
			ip_set_nfnl_put(par->net, info->map_set.index);
		return -ERANGE;
	}

	return 0;
}