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/*
Mac-Telnet - Connect to RouterOS or mactelnetd devices via MAC address
Copyright (C) 2010, Håkon Nessjøen <haakon.nessjoen@gmail.com>
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.
*/
#ifndef _MACTELNET_H
#define _MACTELNET_H 1
#define MT_HEADER_LEN 22
#define MT_CPHEADER_LEN 9
#define MT_PACKET_LEN 1500
#define MT_MACTELNET_PORT 20561
#define MT_MNDP_PORT 5678
#define MT_MNDP_MAX_STRING_LENGTH 128
#define MT_MNDP_BROADCAST_INTERVAL 30
#define MT_MNDP_TIMEOUT 5
#define MT_MNDP_LONGTIMEOUT 120
#define MT_SOFTID_MACTELNET "MAC-Telnet"
#ifndef ETH_ALEN
#define ETH_ALEN 6
#endif
#ifndef IPV4_ALEN
#define IPV4_ALEN 4
#endif
/* Packet type */
enum mt_ptype {
MT_PTYPE_SESSIONSTART,
MT_PTYPE_DATA,
MT_PTYPE_ACK,
MT_PTYPE_PING = 4,
MT_PTYPE_PONG,
MT_PTYPE_END = 255
};
/* Control packet type */
enum mt_cptype {
MT_CPTYPE_BEGINAUTH,
MT_CPTYPE_ENCRYPTIONKEY,
MT_CPTYPE_PASSWORD,
MT_CPTYPE_USERNAME,
MT_CPTYPE_TERM_TYPE,
MT_CPTYPE_TERM_WIDTH,
MT_CPTYPE_TERM_HEIGHT,
MT_CPTYPE_PACKET_ERROR,
MT_CPTYPE_END_AUTH = 9,
/* Internal CPTYPE, not part of protocol */
MT_CPTYPE_PLAINDATA = -1
};
/* MNDP attribute type */
enum mt_mndp_attrtype {
MT_MNDPTYPE_ADDRESS = 0x0001,
MT_MNDPTYPE_IDENTITY = 0x0005,
MT_MNDPTYPE_VERSION = 0x0007,
MT_MNDPTYPE_PLATFORM = 0x0008,
MT_MNDPTYPE_TIMESTAMP = 0x000a,
MT_MNDPTYPE_SOFTID = 0x000b,
MT_MNDPTYPE_HARDWARE = 0x000c,
MT_MNDPTYPE_IFNAME = 0x0010
};
/* MNDP packet header */
struct mt_mndp_hdr {
unsigned char version;
unsigned char ttl;
unsigned short cksum;
};
struct mt_mactelnet_hdr {
unsigned char ver;
enum mt_ptype ptype;
unsigned char clienttype[2];
unsigned char srcaddr[6];
unsigned char dstaddr[6];
unsigned short seskey;
unsigned int counter;
unsigned char *data;
};
struct mt_mactelnet_control_hdr {
enum mt_cptype cptype;
unsigned int length;
unsigned char *data;
};
/* TODO: Add all the other information obtainable from mndp */
struct mt_mndp_info {
struct mt_mndp_hdr header;
unsigned char address[ETH_ALEN];
char identity[MT_MNDP_MAX_STRING_LENGTH];
char version[MT_MNDP_MAX_STRING_LENGTH];
char platform[MT_MNDP_MAX_STRING_LENGTH];
char hardware[MT_MNDP_MAX_STRING_LENGTH];
char softid[MT_MNDP_MAX_STRING_LENGTH];
char ifname[MT_MNDP_MAX_STRING_LENGTH];
unsigned int uptime;
};
struct mt_packet {
int size;
unsigned char data[MT_PACKET_LEN];
};
/* MacTelnet/Winbox packets */
extern int init_packet(struct mt_packet *packet, enum mt_ptype ptype, unsigned char *srcmac, unsigned char *dstmac, unsigned short sessionkey, unsigned int counter);
extern int add_control_packet(struct mt_packet *packet, enum mt_cptype cptype, void *cpdata, int data_len);
extern void parse_packet(unsigned char *data, struct mt_mactelnet_hdr *pkthdr);
extern int parse_control_packet(unsigned char *data, int data_len, struct mt_mactelnet_control_hdr *cpkthdr);
/* MAC-Ping packets */
int init_pingpacket(struct mt_packet *packet, unsigned char *srcmac, unsigned char *dstmac);
int init_pongpacket(struct mt_packet *packet, unsigned char *srcmac, unsigned char *dstmac);
int add_packetdata(struct mt_packet *packet, unsigned char *data, unsigned short length);
/* MNDP packets */
extern int mndp_init_packet(struct mt_packet *packet, unsigned char version, unsigned char ttl);
extern int mndp_add_attribute(struct mt_packet *packet, enum mt_mndp_attrtype attrtype, void *attrdata, unsigned short data_len);
extern struct mt_mndp_info *parse_mndp(const unsigned char *data, const int packet_len);
int query_mndp(const char *identity, unsigned char *mac);
int query_mndp_or_mac(char *address, unsigned char *dstmac, int verbose);
/* Number of milliseconds between each retransmission */
#define MAX_RETRANSMIT_INTERVALS 9
static const int retransmit_intervals[MAX_RETRANSMIT_INTERVALS] = { 15, 20, 30, 50, 90, 170, 330, 660, 1000 };
/* Control packet magic header */
static const unsigned char mt_mactelnet_cpmagic[4] = { 0x56, 0x34, 0x12, 0xff };
static const unsigned char mt_mactelnet_clienttype[2] = { 0x00, 0x15 };
/* Must be initialized by application */
extern unsigned char mt_direction_fromserver;
#endif
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