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wireshark/epan/dissectors/packet-sebek.c
Michael Mann 2eb7b05b8c Convert most UDP dissectors to use "auto" preferences. 
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67,
convert dissectors that use "udp.port".

More cleanup done on dissectors that use both TCP and UDP dissector
tables, so that less preference callbacks exist.

Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3
Reviewed-on: https://code.wireshark.org/review/18120
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-10-13 02:51:18 +00:00

360 lines
12 KiB
C
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/* packet-sebek.c
* Routines for Sebek - Kernel based data capture - packet dissection
* Modified to add sebek V3
* Copyright 2006, Camilo Viecco <cviecco@indiana.edu>
* Copyright 1999, Nathan Neulinger <nneul@umr.edu>
*
* See: http://project.honeynet.org/tools/sebek/ for more details
*
* 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.
*/
#include "config.h"
#include <math.h>
#include <epan/packet.h>
/*
Sebek v2:
IP address: 32bit unsigned
MAGIC Val: 32bit unsigned
Sebek Ver: 16bit unsigned #value must match 2
Type 16bit unsigned
Counter: 32bit unsigned
Time_sec: 32bit unsigned
Time_usec: 32bit unsigned
Proc ID: 32bit unsigned
User ID: 32bit unsigned
File Desc: 32bit unsigned
Command: 12char array
Length: Data Length
Data: Variable Length data
Sebek v3 header
IP address: 32bit unsigned
MAGIC Val: 32bit unsigned
Sebek Ver: 16bit unsigned #value must match 3
Type 16bit unsigned
Counter: 32bit unsigned
Time_sec: 32bit unsigned
Time_usec: 32bit unsigned
Parent_pid: 32bit unsigned
Proc ID: 32bit unsigned
User ID: 32bit unsigned
File Desc: 32bit unsigned
inode: 32bit unsigned
Command: 12char array
Length: Data Length
Data: Variable data length
Sebekv3 has a sock_socket_record subheader for IPV4:
Dest_ip: 32bit unsigned
Dest_port: 16bit unsigned
Src_ip: 32bit unsigned
src_port: 16bit unsigned
call: 16bit unsigned
proto 8bit unsigned
*/
/* By default, but can be completely different */
#define UDP_PORT_SEBEK 1101 /* Not IANA registered */
void proto_register_sebek(void);
void proto_reg_handoff_sebek(void);
static int proto_sebek = -1;
static int hf_sebek_magic = -1;
static int hf_sebek_version = -1;
static int hf_sebek_type = -1;
static int hf_sebek_counter = -1;
static int hf_sebek_time = -1;
static int hf_sebek_pid = -1;
static int hf_sebek_uid = -1;
static int hf_sebek_fd = -1;
static int hf_sebek_cmd = -1;
static int hf_sebek_len = -1;
static int hf_sebek_data = -1;
static int hf_sebek_ppid = -1;
static int hf_sebek_inode = -1;
static int hf_sebek_socket_src_ip=-1;
static int hf_sebek_socket_src_port=-1;
static int hf_sebek_socket_dst_ip=-1;
static int hf_sebek_socket_dst_port=-1;
static int hf_sebek_socket_call=-1;
static int hf_sebek_socket_proto=-1;
static gint ett_sebek = -1;
/* dissect_sebek - dissects sebek packet data
* tvb - tvbuff for packet data (IN)
* pinfo - packet info
* proto_tree - resolved protocol tree
*/
static int
dissect_sebek(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_tree *sebek_tree;
proto_item *ti;
int offset = 0;
nstime_t ts;
int sebek_ver = 0;
int sebek_type = 0;
int cmd_len = 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SEBEK");
col_set_str(pinfo->cinfo, COL_INFO, "SEBEK - ");
if (tvb_captured_length(tvb)<6)
sebek_ver = 0;
else
sebek_ver = tvb_get_ntohs(tvb, 4);
switch (sebek_ver) {
case 2: col_append_fstr(pinfo->cinfo, COL_INFO, " pid(%d)", tvb_get_ntohl(tvb, 20));
col_append_fstr(pinfo->cinfo, COL_INFO, " uid(%d)", tvb_get_ntohl(tvb, 24));
col_append_fstr(pinfo->cinfo, COL_INFO, " fd(%d)", tvb_get_ntohl(tvb, 28));
col_append_fstr(pinfo->cinfo, COL_INFO, " cmd: %s", tvb_format_text(tvb, 32, 12));
break;
case 3: col_append_fstr(pinfo->cinfo, COL_INFO, " pid(%d)", tvb_get_ntohl(tvb, 24));
col_append_fstr(pinfo->cinfo, COL_INFO, " uid(%d)", tvb_get_ntohl(tvb, 28));
col_append_fstr(pinfo->cinfo, COL_INFO, " fd(%d)", tvb_get_ntohl(tvb, 32));
cmd_len = tvb_strnlen(tvb, 40, 12);
if (cmd_len<0)
cmd_len = 0;
col_append_fstr(pinfo->cinfo, COL_INFO, " cmd: %s", tvb_format_text(tvb, 40, cmd_len));
break;
default:
break;
}
if (tree) {
/* Adding Sebek item and subtree */
ti = proto_tree_add_item(tree, proto_sebek, tvb, 0, -1, ENC_NA);
sebek_tree = proto_item_add_subtree(ti, ett_sebek);
/* check for minimum length before deciding where to go*/
if (tvb_captured_length(tvb)<6)
sebek_ver = 0;
else
sebek_ver = tvb_get_ntohs(tvb, 4);
switch (sebek_ver) {
case 2: proto_tree_add_item(sebek_tree, hf_sebek_magic, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_version, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(sebek_tree, hf_sebek_type, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(sebek_tree, hf_sebek_counter, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
ts.secs = tvb_get_ntohl(tvb, offset);
ts.nsecs = tvb_get_ntohl(tvb, offset+4);
proto_tree_add_time(sebek_tree, hf_sebek_time, tvb, offset, 8, &ts);
offset += 8;
proto_tree_add_item(sebek_tree, hf_sebek_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_uid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_fd, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_cmd, tvb, offset, 12, ENC_ASCII|ENC_NA);
offset += 12;
proto_tree_add_item(sebek_tree, hf_sebek_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
break;
case 3: proto_tree_add_item(sebek_tree, hf_sebek_magic, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_version, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
sebek_type=tvb_get_ntohs(tvb, offset);
proto_tree_add_item(sebek_tree, hf_sebek_type, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(sebek_tree, hf_sebek_counter, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
ts.secs = tvb_get_ntohl(tvb, offset);
ts.nsecs = tvb_get_ntohl(tvb, offset+4);
proto_tree_add_time(sebek_tree, hf_sebek_time, tvb, offset, 8, &ts);
offset += 8;
proto_tree_add_item(sebek_tree, hf_sebek_ppid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_uid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_fd, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_inode, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_cmd, tvb, offset, 12, ENC_ASCII|ENC_NA);
offset += 12;
proto_tree_add_item(sebek_tree, hf_sebek_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
if (sebek_type == 2) {
/*data is socket data, process accordingly*/
proto_tree_add_item(sebek_tree, hf_sebek_socket_dst_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_socket_dst_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(sebek_tree, hf_sebek_socket_src_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sebek_tree, hf_sebek_socket_src_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(sebek_tree, hf_sebek_socket_call, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(sebek_tree, hf_sebek_socket_proto, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
} else {
proto_tree_add_item(sebek_tree, hf_sebek_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
}
break;
default:
break;
}
}
return offset;
}
void
proto_register_sebek(void)
{
static hf_register_info hf[] = {
{ &hf_sebek_magic, {
"Magic", "sebek.magic", FT_UINT32, BASE_HEX,
NULL, 0, "Magic Number", HFILL }},
{ &hf_sebek_version, {
"Version", "sebek.version", FT_UINT16, BASE_DEC,
NULL, 0, "Version Number", HFILL }},
{ &hf_sebek_type, {
"Type", "sebek.type", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_counter, {
"Counter", "sebek.counter", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_time, {
"Time", "sebek.time.sec", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_pid, {
"Process ID", "sebek.pid", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_uid, {
"User ID", "sebek.uid", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_fd, {
"File Descriptor", "sebek.fd", FT_UINT32, BASE_DEC,
NULL, 0, "File Descriptor Number", HFILL }},
{ &hf_sebek_cmd, {
"Command Name", "sebek.cmd", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_len, {
"Data Length", "sebek.len", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_ppid, {
"Parent Process ID", "sebek.ppid", FT_UINT32, BASE_DEC,
NULL, 0, "Process ID", HFILL }},
{ &hf_sebek_inode, {
"Inode ID", "sebek.inode", FT_UINT32, BASE_DEC,
NULL, 0, "Process ID", HFILL }},
{ &hf_sebek_data, {
"Data", "sebek.data", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_sebek_socket_src_ip, {
"Socket.local_ip", "sebek.socket.src_ip", FT_IPv4, BASE_NONE,
NULL, 0, "Socket.src_ip", HFILL }},
{ &hf_sebek_socket_src_port, {
"Socket.local_port", "sebek.socket.src_port", FT_UINT16, BASE_DEC,
NULL, 0, "Socket.src_port", HFILL }},
{ &hf_sebek_socket_dst_ip, {
"Socket.remote_ip", "sebek.socket.dst_ip", FT_IPv4, BASE_NONE,
NULL, 0, "Socket.dst_ip", HFILL }},
{ &hf_sebek_socket_dst_port, {
"Socket.remote_port", "sebek.socket.dst_port", FT_UINT16, BASE_DEC,
NULL, 0, "Socket.dst_port", HFILL }},
{ &hf_sebek_socket_call, {
"Socket.Call_id", "sebek.socket.call", FT_UINT16, BASE_DEC,
NULL, 0, "Socket.call", HFILL }},
{ &hf_sebek_socket_proto, {
"Socket.ip_proto", "sebek.socket.ip_proto", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL }}
};
static gint *ett[] = {
&ett_sebek
};
proto_sebek = proto_register_protocol("SEBEK - Kernel Data Capture", "SEBEK", "sebek");
proto_register_field_array(proto_sebek, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_sebek(void)
{
dissector_handle_t sebek_handle;
sebek_handle = create_dissector_handle(dissect_sebek, proto_sebek);
dissector_add_uint_with_preference("udp.port", UDP_PORT_SEBEK, sebek_handle);
}
/*
* 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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