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wireshark/epan/dissectors/packet-netlink-netfilter.c

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/* packet-netlink-netfilter.c
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define NEW_PROTO_TREE_API
#include "config.h"
#include <epan/aftypes.h>
#include <epan/etypes.h>
#include <epan/packet.h>
#include "packet-netlink.h"
void proto_register_netlink_netfilter(void);
void proto_reg_handoff_netlink_netfilter(void);
typedef struct {
packet_info *pinfo;
struct packet_netlink_data *data;
int encoding; /* copy of data->encoding */
guint16 hw_protocol; /* protocol for NFQUEUE packet payloads. */
} netlink_netfilter_info_t;
static dissector_handle_t netlink_netfilter;
static dissector_handle_t nflog_handle;
static dissector_table_t ethertype_table;
static header_field_info *hfi_netlink_netfilter = NULL;
#define NETLINK_NETFILTER_HFI_INIT HFI_INIT(proto_netlink_netfilter)
/* nfnetlink subsystems from <linux/netfilter/nfnetlink.h> */
enum {
WS_NFNL_SUBSYS_NONE = 0,
WS_NFNL_SUBSYS_CTNETLINK = 1,
WS_NFNL_SUBSYS_CTNETLINK_EXP = 2,
WS_NFNL_SUBSYS_QUEUE = 3,
WS_NFNL_SUBSYS_ULOG = 4,
WS_NFNL_SUBSYS_OSF = 5,
WS_NFNL_SUBSYS_IPSET = 6,
WS_NFNL_SUBSYS_ACCT = 7,
WS_NFNL_SUBSYS_CTNETLINK_TIMEOUT = 8,
WS_NFNL_SUBSYS_CTHELPER = 9,
WS_NFNL_SUBSYS_NFTABLES = 10,
WS_NFNL_SUBSYS_NFT_COMPAT = 11,
};
/* nfnetlink ULOG subsystem types from <linux/netfilter/nfnetlink_log.h> */
enum ws_nfulnl_msg_types {
WS_NFULNL_MSG_PACKET = 0,
WS_NFULNL_MSG_CONFIG = 1
};
/* Macros for "hook function responses" from <linux/netfilter.h> */
enum ws_verdict_types {
WS_NF_DROP = 0,
WS_NF_ACCEPT = 1,
WS_NF_STOLEN = 2,
WS_NF_QUEUE = 3,
WS_NF_REPEAT = 4,
WS_NF_STOP = 5,
};
enum ws_nf_inet_hooks {
WS_NF_INET_PRE_ROUTING = 0,
WS_NF_INET_LOCAL_IN = 1,
WS_NF_INET_FORWARD = 2,
WS_NF_INET_LOCAL_OUT = 3,
WS_NF_INET_POST_ROUTING = 4,
};
/* from <linux/netfilter/nf_conntrack_common.h> */
enum ws_ip_conntrack_info {
WS_IP_CT_ESTABLISHED,
WS_IP_CT_RELATED,
WS_IP_CT_NEW,
WS_IP_CT_IS_REPLY,
WS_IP_CT_ESTABLISHED_REPLY = WS_IP_CT_ESTABLISHED + WS_IP_CT_IS_REPLY,
WS_IP_CT_RELATED_REPLY = WS_IP_CT_RELATED + WS_IP_CT_IS_REPLY,
WS_IP_CT_NUMBER,
};
/* nfnetlink QUEUE subsystem types from <linux/netfilter/nfnetlink_queue.h> */
enum ws_nfqnl_msg_types {
WS_NFQNL_MSG_PACKET = 0,
WS_NFQNL_MSG_VERDICT = 1,
WS_NFQNL_MSG_CONFIG = 2,
WS_NFQNL_MSG_VERDICT_BATCH = 3
};
enum ws_nfqnl_attr_type {
WS_NFQA_UNSPEC = 0,
WS_NFQA_PACKET_HDR = 1,
WS_NFQA_VERDICT_HDR = 2,
WS_NFQA_MARK = 3,
WS_NFQA_TIMESTAMP = 4,
WS_NFQA_IFINDEX_INDEV = 5,
WS_NFQA_IFINDEX_OUTDEV = 6,
WS_NFQA_IFINDEX_PHYSINDEV = 7,
WS_NFQA_IFINDEX_PHYSOUTDEV = 8,
WS_NFQA_HWADDR = 9,
WS_NFQA_PAYLOAD = 10,
WS_NFQA_CT = 11,
WS_NFQA_CT_INFO = 12,
WS_NFQA_CAP_LEN = 13,
WS_NFQA_SKB_INFO = 14,
WS_NFQA_EXP = 15,
WS_NFQA_UID = 16,
WS_NFQA_GID = 17,
WS_NFQA_SECCTX = 18,
WS_NFQA_VLAN = 19,
WS_NFQA_L2HDR = 20,
};
enum ws_nfqnl_msg_config_cmds {
WS_NFQNL_CFG_CMD_NONE = 0,
WS_NFQNL_CFG_CMD_BIND = 1,
WS_NFQNL_CFG_CMD_UNBIND = 2,
WS_NFQNL_CFG_CMD_PF_BIND = 3,
WS_NFQNL_CFG_CMD_PF_UNBIND = 4,
};
enum ws_nfqnl_config_mode {
WS_NFQNL_COPY_NONE = 0,
WS_NFQNL_COPY_META = 1,
WS_NFQNL_COPY_PACKET = 2,
};
enum ws_nfqnl_attr_config {
WS_NFQA_CFG_UNSPEC = 0,
WS_NFQA_CFG_CMD = 1,
WS_NFQA_CFG_PARAMS = 2,
WS_NFQA_CFG_QUEUE_MAXLEN = 3,
WS_NFQA_CFG_MASK = 4,
WS_NFQA_CFG_FLAGS = 5,
};
/* from <linux/netfilter/ipset/ip_set.h> */
enum ws_ipset_cmd {
WS_IPSET_CMD_NONE = 0,
WS_IPSET_CMD_PROTOCOL = 1,
WS_IPSET_CMD_CREATE = 2,
WS_IPSET_CMD_DESTROY = 3,
WS_IPSET_CMD_FLUSH = 4,
WS_IPSET_CMD_RENAME = 5,
WS_IPSET_CMD_SWAP = 6,
WS_IPSET_CMD_LIST = 7,
WS_IPSET_CMD_SAVE = 8,
WS_IPSET_CMD_ADD = 9,
WS_IPSET_CMD_DEL = 10,
WS_IPSET_CMD_TEST = 11,
WS_IPSET_CMD_HEADER = 12,
WS_IPSET_CMD_TYPE = 13,
};
/* Attributes at command level */
enum ws_ipset_attr {
WS_IPSET_ATTR_PROTOCOL = 1,
WS_IPSET_ATTR_SETNAME = 2,
WS_IPSET_ATTR_TYPENAME = 3,
WS_IPSET_ATTR_REVISION = 4,
WS_IPSET_ATTR_FAMILY = 5,
WS_IPSET_ATTR_FLAGS = 6,
WS_IPSET_ATTR_DATA = 7,
WS_IPSET_ATTR_ADT = 8,
WS_IPSET_ATTR_LINENO = 9,
WS_IPSET_ATTR_PROTOCOL_MIN = 10,
};
/* CADT-specific attributes (Create/Abstract Data Type) */
enum ws_ipset_cadt_attr {
WS_IPSET_ATTR_IP_FROM = 1,
WS_IPSET_ATTR_IP_TO = 2,
WS_IPSET_ATTR_CIDR = 3,
WS_IPSET_ATTR_PORT_FROM = 4,
WS_IPSET_ATTR_PORT_TO = 5,
WS_IPSET_ATTR_TIMEOUT = 6,
WS_IPSET_ATTR_PROTO = 7,
WS_IPSET_ATTR_CADT_FLAGS = 8,
WS_IPSET_ATTR_CADT_LINENO = 9,
WS_IPSET_ATTR_MARK = 10,
WS_IPSET_ATTR_MARKMASK = 11,
/* (reserved up to 16) */
#define WS_IPSET_ATTR_CADT_MAX 16
WS_IPSET_ATTR_GC = 17,
WS_IPSET_ATTR_HASHSIZE = 18,
WS_IPSET_ATTR_MAXELEM = 19,
WS_IPSET_ATTR_NETMASK = 20,
WS_IPSET_ATTR_PROBES = 21,
WS_IPSET_ATTR_RESIZE = 22,
WS_IPSET_ATTR_SIZE = 23,
WS_IPSET_ATTR_ELEMENTS = 24,
WS_IPSET_ATTR_REFERENCES = 25,
WS_IPSET_ATTR_MEMSIZE = 26,
};
/* ADT-specific attrivutes */
enum ws_ipset_adt_attr {
WS_IPSET_ATTR_ETHER = 17,
WS_IPSET_ATTR_NAME = 18,
WS_IPSET_ATTR_NAMEREF = 19,
WS_IPSET_ATTR_IP2 = 20,
WS_IPSET_ATTR_CIDR2 = 21,
WS_IPSET_ATTR_IP2_TO = 22,
WS_IPSET_ATTR_IFACE = 23,
WS_IPSET_ATTR_BYTES = 24,
WS_IPSET_ATTR_PACKETS = 25,
WS_IPSET_ATTR_COMMENT = 26,
WS_IPSET_ATTR_SKBMARK = 27,
WS_IPSET_ATTR_SKBPRIO = 28,
WS_IPSET_ATTR_SKBQUEUE = 29,
WS_IPSET_ATTR_PAD = 30,
};
/* IP specific attributes */
enum ws_ipset_ip_attr {
WS_IPSET_ATTR_IPADDR_IPV4 = 1,
WS_IPSET_ATTR_IPADDR_IPV6 = 2,
};
static int ett_netlink_netfilter = -1;
static int ett_nfq_config_attr = -1;
static int ett_nfq_attr = -1;
static int ett_ipset_attr = -1;
static int ett_ipset_cadt_attr = -1;
static int ett_ipset_adt_attr = -1;
static int ett_ipset_ip_attr = -1;
/* nfgenmsg header, common to all Netfilter over Netlink packets. */
static header_field_info hfi_netlink_netfilter_family NETLINK_NETFILTER_HFI_INIT =
{ "Address family", "netlink-netfilter.family", FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&linux_af_vals_ext, 0x00, "nfnetlink address family", HFILL };
static header_field_info hfi_netlink_netfilter_version NETLINK_NETFILTER_HFI_INIT =
{ "Version", "netlink-netfilter.version", FT_UINT8, BASE_DEC,
NULL, 0x00, "nfnetlink version", HFILL };
static header_field_info hfi_netlink_netfilter_resid NETLINK_NETFILTER_HFI_INIT =
{ "Resource id", "netlink-netfilter.res_id", FT_UINT16, BASE_DEC,
NULL, 0x00, NULL, HFILL };
static int dissect_netlink_netfilter_header(tvbuff_t *tvb, proto_tree *tree, int offset)
{
proto_tree_add_item(tree, &hfi_netlink_netfilter_family, tvb, offset, 1, ENC_NA);
offset++;
proto_tree_add_item(tree, &hfi_netlink_netfilter_version, tvb, offset, 1, ENC_NA);
offset++;
proto_tree_add_item(tree, &hfi_netlink_netfilter_resid, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
return offset;
}
/* QUEUE */
/* QUEUE - Config */
static const value_string nfq_type_vals[] = {
{ WS_NFQNL_MSG_PACKET, "Packet" },
{ WS_NFQNL_MSG_VERDICT, "Verdict" },
{ WS_NFQNL_MSG_CONFIG, "Config" },
{ WS_NFQNL_MSG_VERDICT_BATCH, "Verdict (batch)" },
{ 0, NULL }
};
static const value_string nfq_config_command_vals[] = {
{ WS_NFQNL_CFG_CMD_NONE, "None" },
{ WS_NFQNL_CFG_CMD_BIND, "Bind" },
{ WS_NFQNL_CFG_CMD_UNBIND, "Unbind" },
{ WS_NFQNL_CFG_CMD_PF_BIND, "PF bind" },
{ WS_NFQNL_CFG_CMD_PF_UNBIND, "PF unbind" },
{ 0, NULL }
};
static const value_string nfq_config_attr_vals[] = {
{ WS_NFQA_CFG_UNSPEC, "Unspecified" },
{ WS_NFQA_CFG_CMD, "Command" },
{ WS_NFQA_CFG_PARAMS, "Parameters" },
{ WS_NFQA_CFG_QUEUE_MAXLEN, "Maximum queue length" },
{ WS_NFQA_CFG_MASK, "Mask" },
{ WS_NFQA_CFG_FLAGS, "Flags" },
{ 0, NULL }
};
static const value_string nfq_config_mode_vals[] = {
{ WS_NFQNL_COPY_NONE, "None" },
{ WS_NFQNL_COPY_META, "Meta" },
{ WS_NFQNL_COPY_PACKET, "Packet" },
{ 0, NULL }
};
static header_field_info hfi_nfq_config_command_command NETLINK_NETFILTER_HFI_INIT =
{ "Command", "netlink-netfilter.queue.config.command.command", FT_UINT8, BASE_DEC,
VALS(nfq_config_command_vals), 0x00, NULL, HFILL };
static header_field_info hfi_nfq_config_command_pf NETLINK_NETFILTER_HFI_INIT =
{ "Protocol family", "netlink-netfilter.queue.config.command.pf", FT_UINT16, BASE_DEC,
VALS(nfproto_family_vals), 0x00, NULL, HFILL };
static header_field_info hfi_nfq_config_params_copyrange NETLINK_NETFILTER_HFI_INIT =
{ "Copy range", "netlink-netfilter.queue.config.params.copy_range", FT_UINT32, BASE_HEX,
NULL, 0x00, NULL, HFILL };
static header_field_info hfi_nfq_config_params_copymode NETLINK_NETFILTER_HFI_INIT =
{ "Copy mode", "netlink-netfilter.queue.config.params.copy_mode", FT_UINT8, BASE_DEC,
VALS(nfq_config_mode_vals), 0x00, NULL, HFILL };
static header_field_info hfi_nfq_config_queue_maxlen NETLINK_NETFILTER_HFI_INIT =
{ "Maximum queue length", "netlink-netfilter.queue.config.queue_maxlen", FT_UINT32, BASE_DEC,
NULL, 0x00, NULL, HFILL };
static header_field_info hfi_nfq_config_mask NETLINK_NETFILTER_HFI_INIT =
{ "Flags mask", "netlink-netfilter.queue.config.mask", FT_UINT32, BASE_HEX,
NULL, 0x00, NULL, HFILL };
static header_field_info hfi_nfq_config_flags NETLINK_NETFILTER_HFI_INIT =
{ "Flags", "netlink-netfilter.queue.config.flags", FT_UINT32, BASE_HEX,
NULL, 0x00, NULL, HFILL };
static int
dissect_nfq_config_attrs(tvbuff_t *tvb, void *data, proto_tree *tree, int nla_type, int offset, int len)
{
enum ws_nfqnl_attr_config type = (enum ws_nfqnl_attr_config) nla_type;
netlink_netfilter_info_t *info = (netlink_netfilter_info_t *) data;
switch (type) {
case WS_NFQA_CFG_UNSPEC:
break;
case WS_NFQA_CFG_CMD:
if (len == 4) {
proto_tree_add_item(tree, &hfi_nfq_config_command_command, tvb, offset, 1, ENC_NA);
offset += 2; /* skip command and 1 byte padding. */
proto_tree_add_item(tree, &hfi_nfq_config_command_pf, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
}
break;
case WS_NFQA_CFG_PARAMS:
if (len == 5) {
proto_tree_add_item(tree, &hfi_nfq_config_params_copyrange, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(tree, &hfi_nfq_config_params_copymode, tvb, offset, 1, ENC_NA);
offset++;
}
break;
case WS_NFQA_CFG_QUEUE_MAXLEN:
if (len == 4) {
proto_tree_add_item(tree, &hfi_nfq_config_queue_maxlen, tvb, offset, 4, info->encoding);
offset += 4;
}
break;
case WS_NFQA_CFG_MASK:
if (len == 4) {
proto_tree_add_item(tree, &hfi_nfq_config_mask, tvb, offset, 4, info->encoding);
offset += 4;
}
break;
case WS_NFQA_CFG_FLAGS:
if (len == 4) {
proto_tree_add_item(tree, &hfi_nfq_config_flags, tvb, offset, 4, info->encoding);
offset += 4;
}
break;
}
return offset;
}
static header_field_info hfi_nfq_config_attr NETLINK_NETFILTER_HFI_INIT =
{ "Type", "netlink-netfilter.queue.config_attr", FT_UINT16, BASE_DEC,
VALS(nfq_config_attr_vals), NLA_TYPE_MASK, NULL, HFILL };
/* QUEUE - Packet and verdict */
static const value_string nfq_attr_vals[] = {
{ WS_NFQA_UNSPEC, "Unspecified" },
{ WS_NFQA_PACKET_HDR, "Packet header" },
{ WS_NFQA_VERDICT_HDR, "Verdict header" },
{ WS_NFQA_MARK, "Mark" },
{ WS_NFQA_TIMESTAMP, "Timestamp" },
{ WS_NFQA_IFINDEX_INDEV, "NFQA_IFINDEX_INDEV" },
{ WS_NFQA_IFINDEX_OUTDEV, "NFQA_IFINDEX_OUTDEV" },
{ WS_NFQA_IFINDEX_PHYSINDEV, "NFQA_IFINDEX_PHYSINDEV" },
{ WS_NFQA_IFINDEX_PHYSOUTDEV, "NFQA_IFINDEX_PHYSOUTDEV" },
{ WS_NFQA_HWADDR, "Hardware address" },
{ WS_NFQA_PAYLOAD, "Payload" },
{ WS_NFQA_CT, "NFQA_CT" },
{ WS_NFQA_CT_INFO, "Conntrack info" },
{ 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:
*/
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