mirror of https://github.com/OISF/suricata
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/* Copyright (C) 2007-2014 Open Information Security Foundation
|
|
*
|
|
* You can copy, redistribute or modify this Program under the terms of
|
|
* the GNU General Public License version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* 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
|
|
* version 2 along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
*
|
|
* \author Pablo Rincon <pablo.rincon.crespo@gmail.com>
|
|
* \author Victor Julien <victor@inliniac.net>
|
|
*/
|
|
|
|
#ifndef __APP_LAYER_SSH_H__
|
|
#define __APP_LAYER_SSH_H__
|
|
|
|
/* header flag */
|
|
#define SSH_FLAG_VERSION_PARSED 0x01
|
|
|
|
/* This flags indicate that the rest of the communication
|
|
* must be ciphered, so the parsing finish here */
|
|
#define SSH_FLAG_PARSER_DONE 0x02
|
|
|
|
/* MSG_CODE */
|
|
#define SSH_MSG_NEWKEYS 21
|
|
|
|
/** From SSH-TRANSP rfc
|
|
|
|
SSH Bunary packet structure:
|
|
uint32 packet_length
|
|
byte padding_length
|
|
byte[n1] payload; n1 = packet_length - padding_length - 1
|
|
byte[n2] random padding; n2 = padding_length
|
|
byte[m] mac (Message Authentication Code - MAC); m = mac_length
|
|
|
|
So we are going to do a header struct to store
|
|
the lenghts and msg_code (inside payload, if any)
|
|
*/
|
|
|
|
typedef struct SshHeader_ {
|
|
uint32_t pkt_len;
|
|
uint8_t padding_len;
|
|
uint8_t msg_code;
|
|
uint16_t banner_len;
|
|
uint8_t buf[6];
|
|
uint8_t buf_offset;
|
|
uint8_t flags;
|
|
uint32_t record_left;
|
|
uint8_t *proto_version;
|
|
uint8_t *software_version;
|
|
uint8_t *banner_buffer;
|
|
} SshHeader;
|
|
|
|
enum {
|
|
SSH_STATE_IN_PROGRESS,
|
|
SSH_STATE_BANNER_DONE,
|
|
SSH_STATE_FINISHED,
|
|
};
|
|
|
|
/** structure to store the SSH state values */
|
|
typedef struct SshState_ {
|
|
SshHeader srv_hdr;
|
|
SshHeader cli_hdr;
|
|
|
|
/* specifies which loggers are done logging */
|
|
uint32_t logged;
|
|
|
|
uint64_t detect_flags_ts;
|
|
uint64_t detect_flags_tc;
|
|
|
|
DetectEngineState *de_state;
|
|
} SshState;
|
|
|
|
void RegisterSSHParsers(void);
|
|
void SSHParserRegisterTests(void);
|
|
|
|
#endif /* __APP_LAYER_SSH_H__ */
|
|
|