61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2020 InnBlue
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/* Generic header files required by the TFTPC Module. */
|
|
#include <zephyr.h>
|
|
#include <errno.h>
|
|
#include <net/socket.h>
|
|
|
|
/* Defines for creating static arrays for TFTP communication. */
|
|
#define TFTP_HEADER_SIZE 4
|
|
#define TFTP_BLOCK_SIZE 512
|
|
#define TFTP_MAX_MODE_SIZE 8
|
|
#define TFTP_REQ_RETX CONFIG_TFTPC_REQUEST_RETRANSMITS
|
|
|
|
/* Maximum amount of data that can be received in a single go ! */
|
|
#define TFTPC_MAX_BUF_SIZE (TFTP_BLOCK_SIZE + TFTP_HEADER_SIZE)
|
|
|
|
/* Maximum filename size allowed by the TFTP Client. This is used as
|
|
* an upper bound in the "make_request" function to ensure that there
|
|
* are no buffer overflows. The complete "tftpc_buffer" has the size of
|
|
* "TFTPC_MAX_BUF_SIZE" which is used when creating a request. From this
|
|
* total size, we need 2 bytes for request info, 2 dummy NULL bytes and
|
|
* "TFTP_MAX_MODE_SIZE" for mode info. Everything else can be used for
|
|
* filename.
|
|
*/
|
|
#define TFTP_MAX_FILENAME_SIZE (TFTPC_MAX_BUF_SIZE - TFTP_MAX_MODE_SIZE - 4)
|
|
|
|
/* TFTP Opcodes. */
|
|
#define READ_REQUEST 0x1
|
|
#define WRITE_REQUEST 0x2
|
|
#define DATA_OPCODE 0x3
|
|
#define ACK_OPCODE 0x4
|
|
#define ERROR_OPCODE 0x5
|
|
|
|
/* Error Codes */
|
|
|
|
/** Not defined, see error message (if any). */
|
|
#define TFTP_ERROR_UNDEF 0
|
|
/** File not found. */
|
|
#define TFTP_ERROR_NO_FILE 1
|
|
/** Access violation. */
|
|
#define TFTP_ERROR_ACCESS 2
|
|
/** Disk full or allocation exceeded. */
|
|
#define TFTP_ERROR_DISK_FULL 3
|
|
/** Illegal TFTP operation. */
|
|
#define TFTP_ERROR_ILLEGAL_OP 4
|
|
/** Unknown transfer ID. */
|
|
#define TFTP_ERROR_UNKNOWN_TRANSFER_ID 5
|
|
/** File already exists. */
|
|
#define TFTP_ERROR_FILE_EXISTS 6
|
|
/** No such user. */
|
|
#define TFTP_ERROR_NO_USER 7
|
|
|
|
struct tftphdr_ack {
|
|
uint16_t opcode;
|
|
uint16_t block;
|
|
};
|