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/*
* Copyright (C) 2017 Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SAHARA_PROTOCOL_H__
#define __SAHARA_PROTOCOL_H__
/*
* Most of these details of the SAHARA protocol were retrieved from the
* libopenpst library (https://github.com/openpst/libopenpst).
*/
//modes
#define SAH_MODE_TRANSFER_PENDING 0x00
#define SAH_MODE_TRANSFER_COMPLETE 0x01
#define SAH_MODE_MEMORY_DEBUG 0x02
// commands
#define SAH_COMMAND_HELLO_REQ 0x01
#define SAH_COMMAND_HELLO_RESP 0x02
#define SAH_COMMAND_DATA_REQ 0x03
#define SAH_COMMAND_DATA_END_REQ 0x04
#define SAH_COMMAND_DATA_END_RESP 0x05
#define SAH_COMMAND_DATA_END_ACK 0x06
#define SAH_COMMAND_RESET_REQ 0x07
#define SAH_COMMAND_RESET_RESP 0x08
#define SAH_COMMAND_MEMORY_DEBUG_REQ 0x09
#define SAH_COMMAND_MEMORY_READ_REQ 0x0A
struct sah_header {
unsigned int command;
unsigned int packet_size;
} __attribute__((__packed__));
struct sah_hello_req {
unsigned int version;
unsigned int min_version;
unsigned int not_needed;
unsigned int mode;
unsigned int appended[6];
} __attribute__((__packed__));
struct sah_hello_resp {
struct sah_header header;
unsigned int version;
unsigned int min_version;
unsigned int status;
unsigned int mode;
unsigned int appended[6];
} __attribute__((__packed__));
struct sah_data_req {
unsigned int id;
unsigned int offset;
unsigned int size;
} __attribute__((__packed__));
struct sah_data_end_req {
unsigned int id;
unsigned int status;
} __attribute__((__packed__));
struct sah_data_end_ack {
struct sah_header header;
unsigned int status; // 0 more file requests to come, 1 complete
} __attribute__((__packed__));
struct sah_memory_debug_req {
unsigned int address;
unsigned int size;
} __attribute__((__packed__));
struct sah_memory_read_req {
struct sah_header header;
unsigned int address;
unsigned int size;
} __attribute__((__packed__));
// response after a memory read request
struct sah_memory_table {
unsigned int unknown;
unsigned int address;
unsigned int size;
unsigned char empty[20];
unsigned char file[20];
} __attribute__((__packed__));
int hello_response(int tty_fd, int mode);
int hello_handshake(int tty_fd, int mode);
int send_file(int tty_fd, struct sah_data_end_ack *data_end_ack);
int handle_memory_debug(int tty_fd);
#endif
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