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/*
* BJNP protocol definitions for the
* bjnp backend for the Common UNIX Printing System (CUPS).
* Copyright 2008-2020 by Louis Lagendijk
*
* 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; version 2 or later.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CUPS_BJNP_PROTOCOL_H_
#define _CUPS_BJNP_PROTOCOL_H_
/*
* BJNP protocol related definitions
*/
#define BJNP_STRING "BJNP"
#define BJNP_METHOD "bjnp"
/* commands */
typedef enum bjnp_cmd_t {
CMD_UDP_DISCOVER = 0x01, /* discover if service type is listening at
this port */
CMD_UDP_PRINT_JOB_DET = 0x10, /* send print job owner details */
CMD_UDP_CLOSE = 0x11, /* request connection closure */
CMD_TCP_PRINT = 0x21, /* print */
CMD_UDP_GET_STATUS = 0x20, /* get printer status */
CMD_UDP_GET_ID = 0x30, /* get printer identity */
CMD_UDP_SCAN_JOB = 0x32 /* send scan job owner details */
} bjnp_cmd_t;
/* command type */
typedef enum bjnp_device_t {
BJNP_CMD_PRINT = 0x1, /* printer command */
BJNP_CMD_SCAN = 0x2, /* scanner command */
BJNP_RES_PRINT = 0x81, /* printer response */
BJNP_RES_SCAN = 0x82 /* scanner response */
} bjnp_device_type_t;
/* the bjnp header, used for commands and responses */
struct __attribute__((__packed__)) bjnp_header {
char BJNP_id[4]; /* string: BJNP */
uint8_t dev_type; /* 1 = printer, 2 = scanner */
uint8_t cmd_code; /* command code/response code */
uint16_t unknown1; /* unknown, always 0? */
uint16_t seq_no; /* sequence number */
uint16_t session_id; /* session id for printing */
uint32_t payload_len; /* length of command buffer */
};
#define bjnp_header_size sizeof(struct bjnp_header)
/* command definition */
typedef union __attribute__((__packed__)) bjnp_command_u {
struct bjnp_header header;
struct __attribute__((__packed__)) {
struct bjnp_header header;
} udp_discover;
struct __attribute__((__packed__)) {
struct bjnp_header header;
char unknown[8]; /* don't know what these are for */
char hostname[64]; /* hostname of sender */
char username[64]; /* username */
char jobtitle[256]; /* job title */
} udp_job_details;
struct __attribute__((__packed__)) {
struct bjnp_header header;
} udp_close;
struct __attribute__((__packed__)) {
struct bjnp_header header;
char data [BJNP_PRINTBUF_MAX];
/* data to be printer */
} tcp_print;
struct __attribute__((__packed__)) {
struct bjnp_header header;
} udp_get_status;
struct __attribute__((__packed__)) {
struct bjnp_header header;
} udp_get_id;
} bjnp_command_u;
typedef union __attribute__((__packed__)) bjnp_response_u {
struct bjnp_header header;
struct __attribute__((__packed__)) {
struct bjnp_header header;
char unknown1[4]; /* 00 01 08 00 */
char mac_len; /* length of mac address */
char addr_len; /* length od address field */
unsigned char mac_addr[6];/* printers mac address */
union __attribute__((__packed__)) {
struct __attribute__((__packed__)) {
unsigned char ipv4_addr[4];
/* a single IPv4 address */
}
ipv4;
struct __attribute__((__packed__)) {
unsigned char ipv6_addr[8][16];
/* array of IPv6 address */
}
ipv6;
}
addresses;
} udp_discover_response;
struct __attribute__((__packed__)) {
struct bjnp_header header;
} udp_print_job_details_response;
struct __attribute__((__packed__)) {
struct bjnp_header header;
} udp_close_response;
struct __attribute__((__packed__)) {
struct bjnp_header header;
uint32_t accepted; /* nr of bytes accepted by printer */
} tcp_print_response;
struct __attribute__((__packed__)) {
struct bjnp_header header;
uint16_t status_len; /* length of status field */
char status[BJNP_UDP_MAX];
} udp_status_response;
struct __attribute__((__packed__)) {
struct bjnp_header header;
char status[BJNP_UDP_MAX];
} udp_status_response_v2;
struct __attribute__((__packed__)) {
struct bjnp_header header;
uint16_t id_len; /* length of identity field */
char id[2048]; /* identity */
} udp_identity_response;
char fillers[65536];
} bjnp_response_u;
#endif /* _CUPS_BJNP_PROTOCOL_H_ */
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