1 /* 2 * Copyright (c) 2020 InnBlue 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /* Generic header files required by the TFTPC Module. */ 8 #include <zephyr/kernel.h> 9 #include <errno.h> 10 #include <zephyr/net/socket.h> 11 #include <zephyr/net/tftp.h> 12 13 /* Defines for creating static arrays for TFTP communication. */ 14 #define TFTP_MAX_MODE_SIZE 8 15 #define TFTP_REQ_RETX CONFIG_TFTPC_REQUEST_RETRANSMITS 16 17 /* Maximum filename size allowed by the TFTP Client. This is used as 18 * an upper bound in the "make_request" function to ensure that there 19 * are no buffer overflows. The complete "tftpc_buffer" has the size of 20 * "TFTPC_MAX_BUF_SIZE" which is used when creating a request. From this 21 * total size, we need 2 bytes for request info, 2 dummy NULL bytes and 22 * "TFTP_MAX_MODE_SIZE" for mode info. Everything else can be used for 23 * filename. 24 */ 25 #define TFTP_MAX_FILENAME_SIZE (TFTPC_MAX_BUF_SIZE - TFTP_MAX_MODE_SIZE - 4) 26 27 /* TFTP Opcodes. */ 28 #define READ_REQUEST 0x1 29 #define WRITE_REQUEST 0x2 30 #define DATA_OPCODE 0x3 31 #define ACK_OPCODE 0x4 32 #define ERROR_OPCODE 0x5 33 34 /* Error Codes */ 35 36 /** Not defined, see error message (if any). */ 37 #define TFTP_ERROR_UNDEF 0 38 /** File not found. */ 39 #define TFTP_ERROR_NO_FILE 1 40 /** Access violation. */ 41 #define TFTP_ERROR_ACCESS 2 42 /** Disk full or allocation exceeded. */ 43 #define TFTP_ERROR_DISK_FULL 3 44 /** Illegal TFTP operation. */ 45 #define TFTP_ERROR_ILLEGAL_OP 4 46 /** Unknown transfer ID. */ 47 #define TFTP_ERROR_UNKNOWN_TRANSFER_ID 5 48 /** File already exists. */ 49 #define TFTP_ERROR_FILE_EXISTS 6 50 /** No such user. */ 51 #define TFTP_ERROR_NO_USER 7 52 53 struct tftphdr_ack { 54 uint16_t opcode; 55 uint16_t block; 56 }; 57
