forked from osmocom/wireshark
811bb3302b
Always give the netlink data struct to dissect_netlink_attributes() so we can extract which endianness we should use. This fixes the netlink dissector on big endian. Change-Id: Ia485a29035c947908c29a9e30d0aba8d4fc94093 Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com> Reviewed-on: https://code.wireshark.org/review/17636 Reviewed-by: Michael Mann <mmann78@netscape.net> Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Peter Wu <peter@lekensteyn.nl>
1277 lines
41 KiB
C
1277 lines
41 KiB
C
/* packet-netlink-netfilter.c
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#define NEW_PROTO_TREE_API
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#include "config.h"
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#include <epan/aftypes.h>
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#include <epan/etypes.h>
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#include <epan/packet.h>
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#include "packet-netlink.h"
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void proto_register_netlink_netfilter(void);
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void proto_reg_handoff_netlink_netfilter(void);
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typedef struct {
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packet_info *pinfo;
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struct packet_netlink_data *data;
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int encoding; /* copy of data->encoding */
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guint16 hw_protocol; /* protocol for NFQUEUE packet payloads. */
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} netlink_netfilter_info_t;
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static dissector_handle_t netlink_netfilter;
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static dissector_handle_t nflog_handle;
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static dissector_table_t ethertype_table;
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static header_field_info *hfi_netlink_netfilter = NULL;
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#define NETLINK_NETFILTER_HFI_INIT HFI_INIT(proto_netlink_netfilter)
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/* nfnetlink subsystems from <linux/netfilter/nfnetlink.h> */
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enum {
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WS_NFNL_SUBSYS_NONE = 0,
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WS_NFNL_SUBSYS_CTNETLINK = 1,
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WS_NFNL_SUBSYS_CTNETLINK_EXP = 2,
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WS_NFNL_SUBSYS_QUEUE = 3,
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WS_NFNL_SUBSYS_ULOG = 4,
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WS_NFNL_SUBSYS_OSF = 5,
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WS_NFNL_SUBSYS_IPSET = 6,
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WS_NFNL_SUBSYS_ACCT = 7,
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WS_NFNL_SUBSYS_CTNETLINK_TIMEOUT = 8,
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WS_NFNL_SUBSYS_CTHELPER = 9,
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WS_NFNL_SUBSYS_NFTABLES = 10,
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WS_NFNL_SUBSYS_NFT_COMPAT = 11,
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};
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/* nfnetlink ULOG subsystem types from <linux/netfilter/nfnetlink_log.h> */
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enum ws_nfulnl_msg_types {
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WS_NFULNL_MSG_PACKET = 0,
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WS_NFULNL_MSG_CONFIG = 1
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};
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/* Macros for "hook function responses" from <linux/netfilter.h> */
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enum ws_verdict_types {
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WS_NF_DROP = 0,
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WS_NF_ACCEPT = 1,
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WS_NF_STOLEN = 2,
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WS_NF_QUEUE = 3,
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WS_NF_REPEAT = 4,
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WS_NF_STOP = 5,
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};
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enum ws_nf_inet_hooks {
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WS_NF_INET_PRE_ROUTING = 0,
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WS_NF_INET_LOCAL_IN = 1,
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WS_NF_INET_FORWARD = 2,
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WS_NF_INET_LOCAL_OUT = 3,
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WS_NF_INET_POST_ROUTING = 4,
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};
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/* from <linux/netfilter/nf_conntrack_common.h> */
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enum ws_ip_conntrack_info {
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WS_IP_CT_ESTABLISHED,
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WS_IP_CT_RELATED,
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WS_IP_CT_NEW,
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WS_IP_CT_IS_REPLY,
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WS_IP_CT_ESTABLISHED_REPLY = WS_IP_CT_ESTABLISHED + WS_IP_CT_IS_REPLY,
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WS_IP_CT_RELATED_REPLY = WS_IP_CT_RELATED + WS_IP_CT_IS_REPLY,
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WS_IP_CT_NUMBER,
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};
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/* nfnetlink QUEUE subsystem types from <linux/netfilter/nfnetlink_queue.h> */
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enum ws_nfqnl_msg_types {
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WS_NFQNL_MSG_PACKET = 0,
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WS_NFQNL_MSG_VERDICT = 1,
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WS_NFQNL_MSG_CONFIG = 2,
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WS_NFQNL_MSG_VERDICT_BATCH = 3
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};
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enum ws_nfqnl_attr_type {
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WS_NFQA_UNSPEC = 0,
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WS_NFQA_PACKET_HDR = 1,
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WS_NFQA_VERDICT_HDR = 2,
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WS_NFQA_MARK = 3,
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WS_NFQA_TIMESTAMP = 4,
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WS_NFQA_IFINDEX_INDEV = 5,
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WS_NFQA_IFINDEX_OUTDEV = 6,
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WS_NFQA_IFINDEX_PHYSINDEV = 7,
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WS_NFQA_IFINDEX_PHYSOUTDEV = 8,
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WS_NFQA_HWADDR = 9,
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WS_NFQA_PAYLOAD = 10,
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WS_NFQA_CT = 11,
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WS_NFQA_CT_INFO = 12,
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WS_NFQA_CAP_LEN = 13,
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WS_NFQA_SKB_INFO = 14,
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WS_NFQA_EXP = 15,
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WS_NFQA_UID = 16,
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WS_NFQA_GID = 17,
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WS_NFQA_SECCTX = 18,
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WS_NFQA_VLAN = 19,
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WS_NFQA_L2HDR = 20,
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};
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enum ws_nfqnl_msg_config_cmds {
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WS_NFQNL_CFG_CMD_NONE = 0,
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WS_NFQNL_CFG_CMD_BIND = 1,
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WS_NFQNL_CFG_CMD_UNBIND = 2,
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WS_NFQNL_CFG_CMD_PF_BIND = 3,
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WS_NFQNL_CFG_CMD_PF_UNBIND = 4,
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};
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enum ws_nfqnl_config_mode {
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WS_NFQNL_COPY_NONE = 0,
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WS_NFQNL_COPY_META = 1,
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WS_NFQNL_COPY_PACKET = 2,
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};
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enum ws_nfqnl_attr_config {
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WS_NFQA_CFG_UNSPEC = 0,
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WS_NFQA_CFG_CMD = 1,
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WS_NFQA_CFG_PARAMS = 2,
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WS_NFQA_CFG_QUEUE_MAXLEN = 3,
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WS_NFQA_CFG_MASK = 4,
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WS_NFQA_CFG_FLAGS = 5,
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};
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/* from <linux/netfilter/ipset/ip_set.h> */
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enum ws_ipset_cmd {
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WS_IPSET_CMD_NONE = 0,
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WS_IPSET_CMD_PROTOCOL = 1,
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WS_IPSET_CMD_CREATE = 2,
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WS_IPSET_CMD_DESTROY = 3,
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WS_IPSET_CMD_FLUSH = 4,
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WS_IPSET_CMD_RENAME = 5,
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WS_IPSET_CMD_SWAP = 6,
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WS_IPSET_CMD_LIST = 7,
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WS_IPSET_CMD_SAVE = 8,
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WS_IPSET_CMD_ADD = 9,
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WS_IPSET_CMD_DEL = 10,
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WS_IPSET_CMD_TEST = 11,
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WS_IPSET_CMD_HEADER = 12,
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WS_IPSET_CMD_TYPE = 13,
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};
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/* Attributes at command level */
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enum ws_ipset_attr {
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WS_IPSET_ATTR_PROTOCOL = 1,
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WS_IPSET_ATTR_SETNAME = 2,
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WS_IPSET_ATTR_TYPENAME = 3,
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WS_IPSET_ATTR_REVISION = 4,
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WS_IPSET_ATTR_FAMILY = 5,
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WS_IPSET_ATTR_FLAGS = 6,
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WS_IPSET_ATTR_DATA = 7,
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WS_IPSET_ATTR_ADT = 8,
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WS_IPSET_ATTR_LINENO = 9,
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WS_IPSET_ATTR_PROTOCOL_MIN = 10,
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};
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/* CADT-specific attributes (Create/Abstract Data Type) */
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enum ws_ipset_cadt_attr {
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WS_IPSET_ATTR_IP_FROM = 1,
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WS_IPSET_ATTR_IP_TO = 2,
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WS_IPSET_ATTR_CIDR = 3,
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WS_IPSET_ATTR_PORT_FROM = 4,
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WS_IPSET_ATTR_PORT_TO = 5,
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WS_IPSET_ATTR_TIMEOUT = 6,
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WS_IPSET_ATTR_PROTO = 7,
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WS_IPSET_ATTR_CADT_FLAGS = 8,
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WS_IPSET_ATTR_CADT_LINENO = 9,
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WS_IPSET_ATTR_MARK = 10,
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WS_IPSET_ATTR_MARKMASK = 11,
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/* (reserved up to 16) */
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#define WS_IPSET_ATTR_CADT_MAX 16
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WS_IPSET_ATTR_GC = 17,
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WS_IPSET_ATTR_HASHSIZE = 18,
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WS_IPSET_ATTR_MAXELEM = 19,
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WS_IPSET_ATTR_NETMASK = 20,
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WS_IPSET_ATTR_PROBES = 21,
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WS_IPSET_ATTR_RESIZE = 22,
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WS_IPSET_ATTR_SIZE = 23,
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WS_IPSET_ATTR_ELEMENTS = 24,
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WS_IPSET_ATTR_REFERENCES = 25,
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WS_IPSET_ATTR_MEMSIZE = 26,
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};
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/* ADT-specific attrivutes */
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enum ws_ipset_adt_attr {
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WS_IPSET_ATTR_ETHER = 17,
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WS_IPSET_ATTR_NAME = 18,
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WS_IPSET_ATTR_NAMEREF = 19,
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WS_IPSET_ATTR_IP2 = 20,
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WS_IPSET_ATTR_CIDR2 = 21,
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WS_IPSET_ATTR_IP2_TO = 22,
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WS_IPSET_ATTR_IFACE = 23,
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WS_IPSET_ATTR_BYTES = 24,
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WS_IPSET_ATTR_PACKETS = 25,
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WS_IPSET_ATTR_COMMENT = 26,
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WS_IPSET_ATTR_SKBMARK = 27,
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WS_IPSET_ATTR_SKBPRIO = 28,
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WS_IPSET_ATTR_SKBQUEUE = 29,
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WS_IPSET_ATTR_PAD = 30,
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};
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/* IP specific attributes */
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enum ws_ipset_ip_attr {
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WS_IPSET_ATTR_IPADDR_IPV4 = 1,
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WS_IPSET_ATTR_IPADDR_IPV6 = 2,
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};
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static int ett_netlink_netfilter = -1;
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static int ett_nfq_config_attr = -1;
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static int ett_nfq_attr = -1;
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static int ett_ipset_attr = -1;
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static int ett_ipset_cadt_attr = -1;
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static int ett_ipset_adt_attr = -1;
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static int ett_ipset_ip_attr = -1;
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/* nfgenmsg header, common to all Netfilter over Netlink packets. */
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static header_field_info hfi_netlink_netfilter_family NETLINK_NETFILTER_HFI_INIT =
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{ "Address family", "netlink-netfilter.family", FT_UINT8, BASE_DEC | BASE_EXT_STRING,
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&linux_af_vals_ext, 0x00, "nfnetlink address family", HFILL };
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static header_field_info hfi_netlink_netfilter_version NETLINK_NETFILTER_HFI_INIT =
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{ "Version", "netlink-netfilter.version", FT_UINT8, BASE_DEC,
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NULL, 0x00, "nfnetlink version", HFILL };
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static header_field_info hfi_netlink_netfilter_resid NETLINK_NETFILTER_HFI_INIT =
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{ "Resource id", "netlink-netfilter.res_id", FT_UINT16, BASE_DEC,
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NULL, 0x00, NULL, HFILL };
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static int dissect_netlink_netfilter_header(tvbuff_t *tvb, proto_tree *tree, int offset)
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{
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proto_tree_add_item(tree, &hfi_netlink_netfilter_family, tvb, offset, 1, ENC_NA);
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offset++;
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proto_tree_add_item(tree, &hfi_netlink_netfilter_version, tvb, offset, 1, ENC_NA);
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offset++;
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proto_tree_add_item(tree, &hfi_netlink_netfilter_resid, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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return offset;
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}
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/* QUEUE */
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/* QUEUE - Config */
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static const value_string nfq_type_vals[] = {
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{ WS_NFQNL_MSG_PACKET, "Packet" },
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{ WS_NFQNL_MSG_VERDICT, "Verdict" },
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{ WS_NFQNL_MSG_CONFIG, "Config" },
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{ WS_NFQNL_MSG_VERDICT_BATCH, "Verdict (batch)" },
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{ 0, NULL }
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};
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static const value_string nfq_config_command_vals[] = {
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{ WS_NFQNL_CFG_CMD_NONE, "None" },
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{ WS_NFQNL_CFG_CMD_BIND, "Bind" },
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{ WS_NFQNL_CFG_CMD_UNBIND, "Unbind" },
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{ WS_NFQNL_CFG_CMD_PF_BIND, "PF bind" },
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{ WS_NFQNL_CFG_CMD_PF_UNBIND, "PF unbind" },
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{ 0, NULL }
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};
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static const value_string nfq_config_attr_vals[] = {
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{ WS_NFQA_CFG_UNSPEC, "Unspecified" },
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{ WS_NFQA_CFG_CMD, "Command" },
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{ WS_NFQA_CFG_PARAMS, "Parameters" },
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{ WS_NFQA_CFG_QUEUE_MAXLEN, "Maximum queue length" },
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{ WS_NFQA_CFG_MASK, "Mask" },
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{ WS_NFQA_CFG_FLAGS, "Flags" },
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{ 0, NULL }
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};
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static const value_string nfq_config_mode_vals[] = {
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{ WS_NFQNL_COPY_NONE, "None" },
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{ WS_NFQNL_COPY_META, "Meta" },
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{ WS_NFQNL_COPY_PACKET, "Packet" },
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{ 0, NULL }
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};
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static header_field_info hfi_nfq_config_command_command NETLINK_NETFILTER_HFI_INIT =
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{ "Command", "netlink-netfilter.queue.config.command.command", FT_UINT8, BASE_DEC,
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VALS(nfq_config_command_vals), 0x00, NULL, HFILL };
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static header_field_info hfi_nfq_config_command_pf NETLINK_NETFILTER_HFI_INIT =
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{ "Protocol family", "netlink-netfilter.queue.config.command.pf", FT_UINT16, BASE_DEC,
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VALS(nfproto_family_vals), 0x00, NULL, HFILL };
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static header_field_info hfi_nfq_config_params_copyrange NETLINK_NETFILTER_HFI_INIT =
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{ "Copy range", "netlink-netfilter.queue.config.params.copy_range", FT_UINT32, BASE_HEX,
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NULL, 0x00, NULL, HFILL };
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static header_field_info hfi_nfq_config_params_copymode NETLINK_NETFILTER_HFI_INIT =
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{ "Copy mode", "netlink-netfilter.queue.config.params.copy_mode", FT_UINT8, BASE_DEC,
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VALS(nfq_config_mode_vals), 0x00, NULL, HFILL };
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static header_field_info hfi_nfq_config_queue_maxlen NETLINK_NETFILTER_HFI_INIT =
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{ "Maximum queue length", "netlink-netfilter.queue.config.queue_maxlen", FT_UINT32, BASE_DEC,
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NULL, 0x00, NULL, HFILL };
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static header_field_info hfi_nfq_config_mask NETLINK_NETFILTER_HFI_INIT =
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{ "Flags mask", "netlink-netfilter.queue.config.mask", FT_UINT32, BASE_HEX,
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NULL, 0x00, NULL, HFILL };
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static header_field_info hfi_nfq_config_flags NETLINK_NETFILTER_HFI_INIT =
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{ "Flags", "netlink-netfilter.queue.config.flags", FT_UINT32, BASE_HEX,
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NULL, 0x00, NULL, HFILL };
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static int
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dissect_nfq_config_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
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{
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enum ws_nfqnl_attr_config type = (enum ws_nfqnl_attr_config) nla_type;
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netlink_netfilter_info_t *info = (netlink_netfilter_info_t *) data;
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switch (type) {
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case WS_NFQA_CFG_UNSPEC:
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break;
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case WS_NFQA_CFG_CMD:
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if (len == 4) {
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proto_tree_add_item(tree, &hfi_nfq_config_command_command, tvb, offset, 1, ENC_NA);
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offset += 2; /* skip command and 1 byte padding. */
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proto_tree_add_item(tree, &hfi_nfq_config_command_pf, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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}
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break;
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case WS_NFQA_CFG_PARAMS:
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if (len == 5) {
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proto_tree_add_item(tree, &hfi_nfq_config_params_copyrange, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(tree, &hfi_nfq_config_params_copymode, tvb, offset, 1, ENC_NA);
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offset++;
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}
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break;
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case WS_NFQA_CFG_QUEUE_MAXLEN:
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if (len == 4) {
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proto_tree_add_item(tree, &hfi_nfq_config_queue_maxlen, tvb, offset, 4, info->encoding);
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offset += 4;
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}
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break;
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case WS_NFQA_CFG_MASK:
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if (len == 4) {
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proto_tree_add_item(tree, &hfi_nfq_config_mask, tvb, offset, 4, info->encoding);
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offset += 4;
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}
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break;
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case WS_NFQA_CFG_FLAGS:
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if (len == 4) {
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proto_tree_add_item(tree, &hfi_nfq_config_flags, tvb, offset, 4, info->encoding);
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offset += 4;
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}
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break;
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}
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return offset;
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}
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static header_field_info hfi_nfq_config_attr NETLINK_NETFILTER_HFI_INIT =
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{ "Type", "netlink-netfilter.queue.config_attr", FT_UINT16, BASE_DEC,
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VALS(nfq_config_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
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/* QUEUE - Packet and verdict */
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static const value_string nfq_attr_vals[] = {
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{ WS_NFQA_UNSPEC, "Unspecified" },
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{ WS_NFQA_PACKET_HDR, "Packet header" },
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{ WS_NFQA_VERDICT_HDR, "Verdict header" },
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{ WS_NFQA_MARK, "Mark" },
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{ WS_NFQA_TIMESTAMP, "Timestamp" },
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{ WS_NFQA_IFINDEX_INDEV, "NFQA_IFINDEX_INDEV" },
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{ WS_NFQA_IFINDEX_OUTDEV, "NFQA_IFINDEX_OUTDEV" },
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{ WS_NFQA_IFINDEX_PHYSINDEV, "NFQA_IFINDEX_PHYSINDEV" },
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{ WS_NFQA_IFINDEX_PHYSOUTDEV, "NFQA_IFINDEX_PHYSOUTDEV" },
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{ WS_NFQA_HWADDR, "Hardware address" },
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{ WS_NFQA_PAYLOAD, "Payload" },
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{ WS_NFQA_CT, "NFQA_CT" },
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{ WS_NFQA_CT_INFO, "Conntrack info" },
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{ WS_NFQA_CAP_LEN, "Length of captured packet" },
|
|
{ WS_NFQA_SKB_INFO, "SKB meta information" },
|
|
{ WS_NFQA_EXP, "Conntrack expectation" },
|
|
{ WS_NFQA_UID, "SK UID" },
|
|
{ WS_NFQA_GID, "SK GID" },
|
|
{ WS_NFQA_SECCTX, "Security context string" },
|
|
{ WS_NFQA_VLAN, "Packet VLAN info" },
|
|
{ WS_NFQA_L2HDR, "Full L2 header" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string nfq_verdict_vals[] = {
|
|
{ WS_NF_DROP, "DROP" },
|
|
{ WS_NF_ACCEPT, "ACCEPT" },
|
|
{ WS_NF_STOLEN, "STOLEN" },
|
|
{ WS_NF_QUEUE, "QUEUE" },
|
|
{ WS_NF_REPEAT, "REPEAT" },
|
|
{ WS_NF_STOP, "STOP" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
const value_string netfilter_hooks_vals[] = {
|
|
{ WS_NF_INET_PRE_ROUTING, "Pre-routing" },
|
|
{ WS_NF_INET_LOCAL_IN, "Local in" },
|
|
{ WS_NF_INET_FORWARD, "Forward" },
|
|
{ WS_NF_INET_LOCAL_OUT, "Local out" },
|
|
{ WS_NF_INET_POST_ROUTING, "Post-routing" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
const value_string nfproto_family_vals[] = {
|
|
{ WS_NFPROTO_UNSPEC, "Unspecified" },
|
|
{ WS_NFPROTO_INET, "IPv4/IPv6" },
|
|
{ WS_NFPROTO_IPV4, "IPv4" },
|
|
{ WS_NFPROTO_ARP, "ARP" },
|
|
{ WS_NFPROTO_NETDEV, "Netdev" },
|
|
{ WS_NFPROTO_BRIDGE, "Bridge" },
|
|
{ WS_NFPROTO_IPV6, "IPv6" },
|
|
{ WS_NFPROTO_DECNET, "DECNET" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string nfq_ctinfo_vals[] = {
|
|
{ WS_IP_CT_ESTABLISHED, "ESTABLISHED" },
|
|
{ WS_IP_CT_RELATED, "RELATED" },
|
|
{ WS_IP_CT_NEW, "NEW" },
|
|
{ WS_IP_CT_IS_REPLY, "IS_REPLY" },
|
|
{ WS_IP_CT_ESTABLISHED_REPLY, "ESTABLISHED_REPLY" },
|
|
{ WS_IP_CT_RELATED_REPLY, "RELATED_REPLY" },
|
|
{ WS_IP_CT_NUMBER, "NUMBER" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static header_field_info hfi_nfq_verdict_verdict NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Verdict", "netlink-netfilter.queue.verdict.verdict", FT_UINT32, BASE_DEC,
|
|
VALS(nfq_verdict_vals), 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_verdict_id NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Packet ID", "netlink-netfilter.queue.verdict.id", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_packet_id NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Packet ID", "netlink-netfilter.queue.packet.id", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_packet_hwprotocol NETLINK_NETFILTER_HFI_INIT =
|
|
{ "HW protocol", "netlink-netfilter.queue.packet.protocol", FT_UINT16, BASE_HEX,
|
|
VALS(etype_vals), 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_packet_hook NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Netfilter hook", "netlink-netfilter.queue.packet.hook", FT_UINT8, BASE_DEC,
|
|
VALS(netfilter_hooks_vals), 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_nfmark NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Mark", "netlink-netfilter.queue.nfmark", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_timestamp NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Timestamp", "netlink-netfilter.queue.timestamp", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_ifindex_indev NETLINK_NETFILTER_HFI_INIT =
|
|
{ "IFINDEX_INDEV", "netlink-netfilter.queue.ifindex_indev", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_ifindex_outdev NETLINK_NETFILTER_HFI_INIT =
|
|
{ "IFINDEX_OUTDEV", "netlink-netfilter.queue.ifindex_outdev", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_ifindex_physindev NETLINK_NETFILTER_HFI_INIT =
|
|
{ "IFINDEX_PHYSINDEV", "netlink-netfilter.queue.ifindex_physindev", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_ifindex_physoutdev NETLINK_NETFILTER_HFI_INIT =
|
|
{ "IFINDEX_PHYSOUTDEV", "netlink-netfilter.queue.ifindex_physoutdev", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_hwaddr_len NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Address length", "netlink-netfilter.queue.hwaddr.len", FT_UINT16, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_hwaddr_addr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Address", "netlink-netfilter.queue.hwaddr.addr", FT_ETHER, BASE_NONE,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_ctinfo NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Conntrack info", "netlink-netfilter.queue.ct_info", FT_UINT32, BASE_DEC,
|
|
VALS(nfq_ctinfo_vals), 0x00, "Connection state tracking info", HFILL };
|
|
|
|
static header_field_info hfi_nfq_caplen NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Length of captured packet", "netlink-netfilter.queue.caplen", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, "Length of captured, untruncated packet", HFILL };
|
|
|
|
static header_field_info hfi_nfq_uid NETLINK_NETFILTER_HFI_INIT =
|
|
{ "UID", "netlink-netfilter.queue.uid", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_nfq_gid NETLINK_NETFILTER_HFI_INIT =
|
|
{ "GID", "netlink-netfilter.queue.gid", FT_UINT32, BASE_DEC,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static int
|
|
dissect_nfq_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_nfqnl_attr_type type = (enum ws_nfqnl_attr_type) nla_type;
|
|
netlink_netfilter_info_t *info = (netlink_netfilter_info_t *) data;
|
|
|
|
switch (type) {
|
|
case WS_NFQA_UNSPEC:
|
|
break;
|
|
|
|
case WS_NFQA_PACKET_HDR:
|
|
if (len == 7) {
|
|
proto_tree_add_item(tree, &hfi_nfq_packet_id, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(tree, &hfi_nfq_packet_hwprotocol, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
info->hw_protocol = tvb_get_ntohs(tvb, offset);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(tree, &hfi_nfq_packet_hook, tvb, offset, 1, ENC_NA);
|
|
offset++;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_VERDICT_HDR:
|
|
if (len == 8) {
|
|
proto_tree_add_item(tree, &hfi_nfq_verdict_verdict, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(tree, &hfi_nfq_verdict_id, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_MARK:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_nfmark, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_TIMESTAMP:
|
|
if (len == 16) {
|
|
nstime_t ts;
|
|
|
|
ts.secs = (time_t)tvb_get_ntoh64(tvb, offset);
|
|
ts.nsecs = (int)tvb_get_ntoh64(tvb, offset + 8) * 1000;
|
|
proto_tree_add_time(tree, &hfi_nfq_timestamp, tvb, offset, 16, &ts);
|
|
offset += 16;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_IFINDEX_INDEV:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_ifindex_indev, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_IFINDEX_OUTDEV:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_ifindex_outdev, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_IFINDEX_PHYSINDEV:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_ifindex_physindev, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_IFINDEX_PHYSOUTDEV:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_ifindex_physoutdev, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_HWADDR:
|
|
if (len >= 4) {
|
|
guint16 addrlen;
|
|
|
|
proto_tree_add_item(tree, &hfi_nfq_hwaddr_len, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
addrlen = tvb_get_ntohs(tvb, offset);
|
|
offset += 4; /* skip len and padding */
|
|
|
|
/* XXX expert info if 4 + addrlen > len. */
|
|
addrlen = MIN(addrlen, len - 4);
|
|
proto_tree_add_item(tree, &hfi_nfq_hwaddr_addr, tvb, offset, addrlen, ENC_BIG_ENDIAN);
|
|
offset += addrlen;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_PAYLOAD:
|
|
if (len > 0) {
|
|
tvbuff_t *next_tvb = tvb_new_subset_length(tvb, offset, len);
|
|
proto_tree *parent_tree = proto_item_get_parent(tree);
|
|
|
|
if (!dissector_try_uint(ethertype_table, info->hw_protocol, next_tvb, info->pinfo, parent_tree))
|
|
call_data_dissector(next_tvb, info->pinfo, parent_tree);
|
|
offset += len;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_CT:
|
|
/* TODO */
|
|
break;
|
|
|
|
case WS_NFQA_CT_INFO:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_ctinfo, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_CAP_LEN:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_caplen, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_SKB_INFO:
|
|
case WS_NFQA_EXP:
|
|
/* TODO */
|
|
break;
|
|
|
|
case WS_NFQA_UID:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_uid, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_GID:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_nfq_gid, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WS_NFQA_SECCTX:
|
|
case WS_NFQA_VLAN:
|
|
case WS_NFQA_L2HDR:
|
|
/* TODO */
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static header_field_info hfi_nfq_attr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.queue.attr", FT_UINT16, BASE_DEC,
|
|
VALS(nfq_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
|
|
|
|
/* QUEUE - main */
|
|
|
|
static int
|
|
dissect_netfilter_queue(tvbuff_t *tvb, netlink_netfilter_info_t *info, proto_tree *tree, int offset)
|
|
{
|
|
enum ws_nfqnl_msg_types type = (enum ws_nfqnl_msg_types) (info->data->type & 0xff);
|
|
|
|
offset = dissect_netlink_netfilter_header(tvb, tree, offset);
|
|
|
|
switch (type) {
|
|
case WS_NFQNL_MSG_CONFIG:
|
|
return dissect_netlink_attributes(tvb, &hfi_nfq_config_attr, ett_nfq_config_attr, info, info->data, tree, offset, -1, dissect_nfq_config_attrs);
|
|
|
|
case WS_NFQNL_MSG_PACKET:
|
|
case WS_NFQNL_MSG_VERDICT:
|
|
return dissect_netlink_attributes(tvb, &hfi_nfq_attr, ett_nfq_attr, info, info->data, tree, offset, -1, dissect_nfq_attrs);
|
|
|
|
case WS_NFQNL_MSG_VERDICT_BATCH:
|
|
/* TODO */
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* ULOG */
|
|
|
|
static const value_string netlink_netfilter_ulog_type_vals[] = {
|
|
{ WS_NFULNL_MSG_PACKET, "Packet" },
|
|
{ WS_NFULNL_MSG_CONFIG, "Config" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static header_field_info hfi_netlink_netfilter_ulog_type NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.ulog_type", FT_UINT16, BASE_DEC,
|
|
VALS(netlink_netfilter_ulog_type_vals), 0x00FF, NULL, HFILL };
|
|
|
|
static int
|
|
dissect_netfilter_ulog(tvbuff_t *tvb, netlink_netfilter_info_t *info, proto_tree *tree, int offset)
|
|
{
|
|
enum ws_nfulnl_msg_types type = (enum ws_nfulnl_msg_types) (info->data->type & 0xff);
|
|
|
|
switch (type) {
|
|
case WS_NFULNL_MSG_PACKET:
|
|
/* Note that NFLOG dissects the nfgenmsg header */
|
|
call_dissector(nflog_handle, tvb, info->pinfo, tree);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* IPSET */
|
|
|
|
static const value_string ipset_command_vals[] = {
|
|
{ WS_IPSET_CMD_NONE, "None" },
|
|
{ WS_IPSET_CMD_PROTOCOL, "Return protocol version" },
|
|
{ WS_IPSET_CMD_CREATE, "Create a new (empty) set" },
|
|
{ WS_IPSET_CMD_DESTROY, "Destroy a (empty) set" },
|
|
{ WS_IPSET_CMD_FLUSH, "Remove all elements from a set" },
|
|
{ WS_IPSET_CMD_RENAME, "Rename a set" },
|
|
{ WS_IPSET_CMD_SWAP, "Swap two sets" },
|
|
{ WS_IPSET_CMD_LIST, "List sets" },
|
|
{ WS_IPSET_CMD_SAVE, "Save sets" },
|
|
{ WS_IPSET_CMD_ADD, "Add an element to a set" },
|
|
{ WS_IPSET_CMD_DEL, "Delete an element from a set" },
|
|
{ WS_IPSET_CMD_TEST, "Test an element in a set" },
|
|
{ WS_IPSET_CMD_HEADER, "Get set header data only" },
|
|
{ WS_IPSET_CMD_TYPE, "Get set type" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ipset_attr_vals[] = {
|
|
{ WS_IPSET_ATTR_PROTOCOL, "Protocol version" },
|
|
{ WS_IPSET_ATTR_SETNAME, "Name of the set" },
|
|
{ WS_IPSET_ATTR_TYPENAME, "Typename" },
|
|
{ WS_IPSET_ATTR_REVISION, "Settype revision" },
|
|
{ WS_IPSET_ATTR_FAMILY, "Settype family" },
|
|
{ WS_IPSET_ATTR_FLAGS, "Flags at command level" },
|
|
{ WS_IPSET_ATTR_DATA, "Nested attributes" },
|
|
{ WS_IPSET_ATTR_ADT, "Multiple data containers" },
|
|
{ WS_IPSET_ATTR_LINENO, "Restore lineno" },
|
|
{ WS_IPSET_ATTR_PROTOCOL_MIN, "Minimal supported version number" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ipset_cadt_attr_vals[] = {
|
|
{ WS_IPSET_ATTR_IP_FROM, "IP_FROM" },
|
|
{ WS_IPSET_ATTR_IP_TO, "IP_TO" },
|
|
{ WS_IPSET_ATTR_CIDR, "CIDR" },
|
|
{ WS_IPSET_ATTR_PORT_FROM, "PORT_FROM" },
|
|
{ WS_IPSET_ATTR_PORT_TO, "PORT_TO" },
|
|
{ WS_IPSET_ATTR_TIMEOUT, "TIMEOUT" },
|
|
{ WS_IPSET_ATTR_PROTO, "PROTO" },
|
|
{ WS_IPSET_ATTR_CADT_FLAGS, "CADT_FLAGS" },
|
|
{ WS_IPSET_ATTR_CADT_LINENO, "CADT_LINENO" },
|
|
{ WS_IPSET_ATTR_MARK, "MARK" },
|
|
{ WS_IPSET_ATTR_MARKMASK, "MARKMASK" },
|
|
/* up to 16 is reserved. */
|
|
{ WS_IPSET_ATTR_GC, "GC" },
|
|
{ WS_IPSET_ATTR_HASHSIZE, "HASHSIZE" },
|
|
{ WS_IPSET_ATTR_MAXELEM, "MAXELEM" },
|
|
{ WS_IPSET_ATTR_NETMASK, "NETMASK" },
|
|
{ WS_IPSET_ATTR_PROBES, "PROBES" },
|
|
{ WS_IPSET_ATTR_RESIZE, "RESIZE" },
|
|
{ WS_IPSET_ATTR_SIZE, "SIZE" },
|
|
{ WS_IPSET_ATTR_ELEMENTS, "ELEMENTS" },
|
|
{ WS_IPSET_ATTR_REFERENCES, "REFERENCES" },
|
|
{ WS_IPSET_ATTR_MEMSIZE, "MEMSIZE" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ipset_adt_attr_vals[] = {
|
|
/* Nasty! Duplication from CADT above... */
|
|
{ WS_IPSET_ATTR_IP_FROM, "IP_FROM" },
|
|
{ WS_IPSET_ATTR_IP_TO, "IP_TO" },
|
|
{ WS_IPSET_ATTR_CIDR, "CIDR" },
|
|
{ WS_IPSET_ATTR_PORT_FROM, "PORT_FROM" },
|
|
{ WS_IPSET_ATTR_PORT_TO, "PORT_TO" },
|
|
{ WS_IPSET_ATTR_TIMEOUT, "TIMEOUT" },
|
|
{ WS_IPSET_ATTR_PROTO, "PROTO" },
|
|
{ WS_IPSET_ATTR_CADT_FLAGS, "CADT_FLAGS" },
|
|
{ WS_IPSET_ATTR_CADT_LINENO, "CADT_LINENO" },
|
|
{ WS_IPSET_ATTR_MARK, "MARK" },
|
|
{ WS_IPSET_ATTR_MARKMASK, "MARKMASK" },
|
|
/* End of duplication, other attributes follow. */
|
|
{ WS_IPSET_ATTR_ETHER, "ETHER" },
|
|
{ WS_IPSET_ATTR_NAME, "NAME" },
|
|
{ WS_IPSET_ATTR_NAMEREF, "NAMEREF" },
|
|
{ WS_IPSET_ATTR_IP2, "IP2" },
|
|
{ WS_IPSET_ATTR_CIDR2, "CIDR2" },
|
|
{ WS_IPSET_ATTR_IP2_TO, "IP2_TO" },
|
|
{ WS_IPSET_ATTR_IFACE, "IFACE" },
|
|
{ WS_IPSET_ATTR_BYTES, "BYTES" },
|
|
{ WS_IPSET_ATTR_PACKETS, "PACKETS" },
|
|
{ WS_IPSET_ATTR_COMMENT, "COMMENT" },
|
|
{ WS_IPSET_ATTR_SKBMARK, "SKBMARK" },
|
|
{ WS_IPSET_ATTR_SKBPRIO, "SKBPRIO" },
|
|
{ WS_IPSET_ATTR_SKBQUEUE, "SKBQUEUE" },
|
|
{ WS_IPSET_ATTR_PAD, "PAD" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ipset_ip_attr_vals[] = {
|
|
{ WS_IPSET_ATTR_IPADDR_IPV4, "IPv4 address" },
|
|
{ WS_IPSET_ATTR_IPADDR_IPV6, "IPv6 address" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static header_field_info hfi_ipset_attr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.ipset_attr", FT_UINT16, BASE_DEC,
|
|
VALS(ipset_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_cadt_attr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.ipset_cadt_attr", FT_UINT16, BASE_DEC,
|
|
VALS(ipset_cadt_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_cadt_attr_cidr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "CIDR", "netlink-netfilter.ipset.cidr", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_cadt_attr_timeout NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Timeout", "netlink-netfilter.ipset.timeout", FT_UINT32, BASE_DEC,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_cadt_attr_cadt_flags NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Flags", "netlink-netfilter.ipset.cadt_flags", FT_UINT32, BASE_HEX,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_attr_setname NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Setname", "netlink-netfilter.ipset.setname", FT_STRINGZ, STR_UNICODE,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_attr_typename NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Typename", "netlink-netfilter.ipset.typename", FT_STRINGZ, STR_UNICODE,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_attr_family NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Settype family", "netlink-netfilter.ipset.family", FT_UINT8, BASE_DEC,
|
|
VALS(nfproto_family_vals), 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_attr_flags NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Flags", "netlink-netfilter.ipset.flags", FT_UINT32, BASE_HEX,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_adt_attr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.ipset_adt_attr", FT_UINT16, BASE_DEC,
|
|
VALS(ipset_adt_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_adt_attr_comment NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Comment", "netlink-netfilter.ipset.comment", FT_STRINGZ, STR_UNICODE,
|
|
NULL, 0x0, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_ip_attr NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.ipset_ip_attr", FT_UINT16, BASE_DEC,
|
|
VALS(ipset_ip_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_ip_attr_ipv4 NETLINK_NETFILTER_HFI_INIT =
|
|
{ "IPv4 address", "netlink-netfilter.ipset.ip_addr", FT_IPv4, BASE_NONE,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_ip_attr_ipv6 NETLINK_NETFILTER_HFI_INIT =
|
|
{ "IPv6 address", "netlink-netfilter.ipset.ip6_addr", FT_IPv6, BASE_NONE,
|
|
NULL, 0x00, NULL, HFILL };
|
|
|
|
static int
|
|
dissect_ipset_ip_attrs(tvbuff_t *tvb, void *data _U_, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_ipset_ip_attr type = (enum ws_ipset_ip_attr) nla_type & NLA_TYPE_MASK;
|
|
|
|
switch (type) {
|
|
case WS_IPSET_ATTR_IPADDR_IPV4:
|
|
proto_tree_add_item(tree, &hfi_ipset_ip_attr_ipv4, tvb, offset, len, ENC_BIG_ENDIAN);
|
|
return 1;
|
|
|
|
case WS_IPSET_ATTR_IPADDR_IPV6:
|
|
proto_tree_add_item(tree, &hfi_ipset_ip_attr_ipv6, tvb, offset, len, ENC_BIG_ENDIAN);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dissect_ipset_cadt_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_ipset_cadt_attr type = (enum ws_ipset_cadt_attr) nla_type & NLA_TYPE_MASK;
|
|
netlink_netfilter_info_t *info = (netlink_netfilter_info_t *) data;
|
|
|
|
switch (type) {
|
|
case WS_IPSET_ATTR_IP_FROM:
|
|
case WS_IPSET_ATTR_IP_TO:
|
|
if (nla_type & NLA_F_NESTED)
|
|
return dissect_netlink_attributes(tvb, &hfi_ipset_ip_attr, ett_ipset_ip_attr, info, info->data, tree, offset, len, dissect_ipset_ip_attrs);
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_CIDR:
|
|
if (len == 1) {
|
|
proto_tree_add_item(tree, &hfi_ipset_cadt_attr_cidr, tvb, offset, len, ENC_NA);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_PORT_FROM:
|
|
case WS_IPSET_ATTR_PORT_TO:
|
|
/* TODO */
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_TIMEOUT:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_ipset_cadt_attr_timeout, tvb, offset, len, ENC_BIG_ENDIAN);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_PROTO:
|
|
/* TODO */
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_CADT_FLAGS:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_ipset_cadt_attr_cadt_flags, tvb, offset, len, ENC_BIG_ENDIAN);
|
|
/* TODO show bits from enum ipset_cadt_flags */
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_CADT_LINENO:
|
|
case WS_IPSET_ATTR_MARK:
|
|
case WS_IPSET_ATTR_MARKMASK:
|
|
case WS_IPSET_ATTR_GC:
|
|
case WS_IPSET_ATTR_HASHSIZE:
|
|
case WS_IPSET_ATTR_MAXELEM:
|
|
case WS_IPSET_ATTR_NETMASK:
|
|
case WS_IPSET_ATTR_PROBES:
|
|
case WS_IPSET_ATTR_RESIZE:
|
|
case WS_IPSET_ATTR_SIZE:
|
|
case WS_IPSET_ATTR_ELEMENTS:
|
|
case WS_IPSET_ATTR_REFERENCES:
|
|
case WS_IPSET_ATTR_MEMSIZE:
|
|
/* TODO */
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dissect_ipset_adt_data_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_ipset_adt_attr type = (enum ws_ipset_adt_attr) nla_type & NLA_TYPE_MASK;
|
|
|
|
if ((nla_type & NLA_TYPE_MASK) <= WS_IPSET_ATTR_CADT_MAX)
|
|
return dissect_ipset_cadt_attrs(tvb, data, tree, nla_type, offset, len);
|
|
|
|
switch (type) {
|
|
case WS_IPSET_ATTR_COMMENT:
|
|
proto_tree_add_item(tree, &hfi_ipset_adt_attr_comment, tvb, offset, len, ENC_UTF_8);
|
|
return 1;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dissect_ipset_adt_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
netlink_netfilter_info_t *info = (netlink_netfilter_info_t *) data;
|
|
|
|
if (nla_type & NLA_F_NESTED)
|
|
return dissect_netlink_attributes(tvb, &hfi_ipset_adt_attr, ett_ipset_adt_attr, info, info->data, tree, offset, len, dissect_ipset_adt_data_attrs);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dissect_ipset_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_ipset_attr type = (enum ws_ipset_attr) nla_type & NLA_TYPE_MASK;
|
|
netlink_netfilter_info_t *info = (netlink_netfilter_info_t *) data;
|
|
|
|
switch (type) {
|
|
case WS_IPSET_ATTR_PROTOCOL:
|
|
/* TODO */
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_SETNAME:
|
|
proto_tree_add_item(tree, &hfi_ipset_attr_setname, tvb, offset, len, ENC_UTF_8);
|
|
return 1;
|
|
|
|
case WS_IPSET_ATTR_TYPENAME:
|
|
proto_tree_add_item(tree, &hfi_ipset_attr_typename, tvb, offset, len, ENC_UTF_8);
|
|
return 1;
|
|
|
|
case WS_IPSET_ATTR_REVISION:
|
|
/* TODO */
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_FAMILY:
|
|
proto_tree_add_item(tree, &hfi_ipset_attr_family, tvb, offset, len, ENC_BIG_ENDIAN);
|
|
return 1;
|
|
|
|
case WS_IPSET_ATTR_FLAGS:
|
|
if (len == 4) {
|
|
proto_tree_add_item(tree, &hfi_ipset_attr_flags, tvb, offset, len, ENC_BIG_ENDIAN);
|
|
/* TODO show bits from enum ipset_cmd_flags */
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_DATA:
|
|
/* See ipset lib/PROTOCOL, CADT attributes only follow for some commands */
|
|
if (nla_type & NLA_F_NESTED) {
|
|
guint16 command = info->data->type & 0xffff;
|
|
|
|
if (command == WS_IPSET_CMD_CREATE ||
|
|
command == WS_IPSET_CMD_LIST ||
|
|
command == WS_IPSET_CMD_SAVE)
|
|
return dissect_netlink_attributes(tvb, &hfi_ipset_cadt_attr, ett_ipset_cadt_attr, info, info->data, tree, offset, len, dissect_ipset_cadt_attrs);
|
|
else
|
|
return dissect_netlink_attributes(tvb, &hfi_ipset_adt_attr, ett_ipset_adt_attr, info, info->data, tree, offset, len, dissect_ipset_adt_data_attrs);
|
|
}
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_ADT:
|
|
/* Following this, there will be an IPSET_ATTR_DATA with regular ADT attributes, not CADT */
|
|
if (nla_type & NLA_F_NESTED)
|
|
return dissect_netlink_attributes(tvb, &hfi_ipset_attr, ett_ipset_attr, info, info->data, tree, offset, len, dissect_ipset_adt_attrs);
|
|
return 0;
|
|
|
|
case WS_IPSET_ATTR_LINENO:
|
|
case WS_IPSET_ATTR_PROTOCOL_MIN:
|
|
/* TODO */
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dissect_netfilter_ipset(tvbuff_t *tvb, netlink_netfilter_info_t *info, proto_tree *tree, int offset)
|
|
{
|
|
offset = dissect_netlink_netfilter_header(tvb, tree, offset);
|
|
return dissect_netlink_attributes(tvb, &hfi_ipset_attr, ett_ipset_attr, info, info->data, tree, offset, -1, dissect_ipset_attrs);
|
|
}
|
|
|
|
|
|
static const value_string netlink_netfilter_subsystem_vals[] = {
|
|
{ WS_NFNL_SUBSYS_NONE, "None" },
|
|
{ WS_NFNL_SUBSYS_CTNETLINK, "Conntrack" },
|
|
{ WS_NFNL_SUBSYS_CTNETLINK_EXP, "Conntrack expect" },
|
|
{ WS_NFNL_SUBSYS_QUEUE, "Netfilter packet queue" },
|
|
{ WS_NFNL_SUBSYS_ULOG, "Netfilter userspace logging" },
|
|
{ WS_NFNL_SUBSYS_OSF, "OS fingerprint" },
|
|
{ WS_NFNL_SUBSYS_IPSET, "IP set" },
|
|
{ WS_NFNL_SUBSYS_ACCT, "Extended Netfilter accounting infrastructure" },
|
|
{ WS_NFNL_SUBSYS_CTNETLINK_TIMEOUT, "Extended Netfilter Connection Tracking timeout tuning" },
|
|
{ WS_NFNL_SUBSYS_CTHELPER, "Connection Tracking Helpers" },
|
|
{ WS_NFNL_SUBSYS_NFTABLES, "Netfilter tables" },
|
|
{ WS_NFNL_SUBSYS_NFT_COMPAT, "x_tables compatibility layer for nf_tables" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static header_field_info hfi_nfq_type NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Type", "netlink-netfilter.queue_type", FT_UINT16, BASE_DEC,
|
|
VALS(nfq_type_vals), 0x00FF, NULL, HFILL };
|
|
|
|
static header_field_info hfi_ipset_command NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Command", "netlink-netfilter.ipset_command", FT_UINT16, BASE_DEC,
|
|
VALS(ipset_command_vals), 0x00FF, NULL, HFILL };
|
|
|
|
static header_field_info hfi_netlink_netfilter_subsys NETLINK_NETFILTER_HFI_INIT =
|
|
{ "Subsystem", "netlink-netfilter.subsys", FT_UINT16, BASE_DEC,
|
|
VALS(netlink_netfilter_subsystem_vals), 0xFF00, NULL, HFILL };
|
|
|
|
static int
|
|
dissect_netlink_netfilter(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *_data)
|
|
{
|
|
struct packet_netlink_data *data = NULL;
|
|
netlink_netfilter_info_t info;
|
|
int offset;
|
|
|
|
if (_data) {
|
|
if (((struct packet_netlink_data *) _data)->magic == PACKET_NETLINK_MAGIC)
|
|
data = (struct packet_netlink_data *) _data;
|
|
}
|
|
|
|
DISSECTOR_ASSERT(data);
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Netlink netfilter");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
proto_item_set_text(tree, "Linux netlink netfilter message");
|
|
|
|
/* XXX, from header tvb */
|
|
proto_tree_add_uint(tree, &hfi_netlink_netfilter_subsys, NULL, 0, 0, data->type);
|
|
switch (data->type >> 8) {
|
|
case WS_NFNL_SUBSYS_QUEUE:
|
|
proto_tree_add_uint(tree, &hfi_nfq_type, NULL, 0, 0, data->type);
|
|
break;
|
|
|
|
case WS_NFNL_SUBSYS_ULOG:
|
|
proto_tree_add_uint(tree, &hfi_netlink_netfilter_ulog_type, NULL, 0, 0, data->type);
|
|
break;
|
|
|
|
case WS_NFNL_SUBSYS_IPSET:
|
|
proto_tree_add_uint(tree, &hfi_ipset_command, NULL, 0, 0, data->type);
|
|
break;
|
|
}
|
|
|
|
info.encoding = data->encoding;
|
|
info.pinfo = pinfo;
|
|
info.data = data;
|
|
info.hw_protocol = 0;
|
|
|
|
offset = 0;
|
|
|
|
switch (data->type >> 8) {
|
|
case WS_NFNL_SUBSYS_QUEUE:
|
|
offset = dissect_netfilter_queue(tvb, &info, tree, offset);
|
|
break;
|
|
|
|
case WS_NFNL_SUBSYS_ULOG:
|
|
offset = dissect_netfilter_ulog(tvb, &info, tree, offset);
|
|
break;
|
|
|
|
case WS_NFNL_SUBSYS_IPSET:
|
|
offset = dissect_netfilter_ipset(tvb, &info, tree, offset);
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
void
|
|
proto_register_netlink_netfilter(void)
|
|
{
|
|
#ifndef HAVE_HFI_SECTION_INIT
|
|
static header_field_info *hfi[] = {
|
|
&hfi_netlink_netfilter_subsys,
|
|
&hfi_netlink_netfilter_family,
|
|
&hfi_netlink_netfilter_version,
|
|
&hfi_netlink_netfilter_resid,
|
|
|
|
/* QUEUE */
|
|
&hfi_nfq_type,
|
|
&hfi_nfq_attr,
|
|
&hfi_nfq_config_command_command,
|
|
&hfi_nfq_config_command_pf,
|
|
&hfi_nfq_config_params_copyrange,
|
|
&hfi_nfq_config_params_copymode,
|
|
&hfi_nfq_config_queue_maxlen,
|
|
&hfi_nfq_config_mask,
|
|
&hfi_nfq_config_flags,
|
|
&hfi_nfq_config_attr,
|
|
&hfi_nfq_verdict_verdict,
|
|
&hfi_nfq_verdict_id,
|
|
&hfi_nfq_packet_id,
|
|
&hfi_nfq_packet_hwprotocol,
|
|
&hfi_nfq_packet_hook,
|
|
&hfi_nfq_nfmark,
|
|
&hfi_nfq_timestamp,
|
|
&hfi_nfq_ifindex_indev,
|
|
&hfi_nfq_ifindex_outdev,
|
|
&hfi_nfq_ifindex_physindev,
|
|
&hfi_nfq_ifindex_physoutdev,
|
|
&hfi_nfq_hwaddr_len,
|
|
&hfi_nfq_hwaddr_addr,
|
|
&hfi_nfq_ctinfo,
|
|
&hfi_nfq_caplen,
|
|
&hfi_nfq_uid,
|
|
&hfi_nfq_gid,
|
|
/* ULOG */
|
|
&hfi_netlink_netfilter_ulog_type,
|
|
/* IPSET */
|
|
&hfi_ipset_command,
|
|
&hfi_ipset_attr,
|
|
&hfi_ipset_cadt_attr,
|
|
&hfi_ipset_cadt_attr_cidr,
|
|
&hfi_ipset_cadt_attr_timeout,
|
|
&hfi_ipset_cadt_attr_cadt_flags,
|
|
&hfi_ipset_attr_setname,
|
|
&hfi_ipset_attr_typename,
|
|
&hfi_ipset_attr_family,
|
|
&hfi_ipset_attr_flags,
|
|
&hfi_ipset_adt_attr,
|
|
&hfi_ipset_adt_attr_comment,
|
|
&hfi_ipset_ip_attr,
|
|
&hfi_ipset_ip_attr_ipv4,
|
|
&hfi_ipset_ip_attr_ipv6,
|
|
};
|
|
#endif
|
|
|
|
static gint *ett[] = {
|
|
&ett_netlink_netfilter,
|
|
&ett_nfq_config_attr,
|
|
&ett_nfq_attr,
|
|
&ett_ipset_attr,
|
|
&ett_ipset_cadt_attr,
|
|
&ett_ipset_adt_attr,
|
|
&ett_ipset_ip_attr,
|
|
};
|
|
|
|
int proto_netlink_netfilter;
|
|
|
|
proto_netlink_netfilter = proto_register_protocol("Linux netlink netfilter protocol", "netfilter", "netlink-netfilter" );
|
|
hfi_netlink_netfilter = proto_registrar_get_nth(proto_netlink_netfilter);
|
|
|
|
proto_register_fields(proto_netlink_netfilter, hfi, array_length(hfi));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
netlink_netfilter = create_dissector_handle(dissect_netlink_netfilter, proto_netlink_netfilter);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_netlink_netfilter(void)
|
|
{
|
|
dissector_add_uint("netlink.protocol", WS_NETLINK_NETFILTER, netlink_netfilter);
|
|
|
|
nflog_handle = find_dissector_add_dependency("nflog", hfi_netlink_netfilter->id);
|
|
ethertype_table = find_dissector_table("ethertype");
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|