LwIP_TFTP_Server
Select one of the symbols to view example projects that use it.
 
Outline
#include <string.h>
#include "tftputils.h"
tftp_decode_op(char *)
tftp_extract_block(char *)
tftp_extract_filename(char *, char *)
tftp_set_opcode(char *, tftp_opcode)
tftp_set_errorcode(char *, tftp_errorcode)
tftp_set_errormsg(char *, char *)
tftp_set_block(char *, u16_t)
tftp_set_data_message(char *, char *, int)
tftp_is_correct_ack(char *, int)
Files
loading...
CodeScopeSTM32 Libraries and SamplesLwIP_TFTP_ServerSrc/tftputils.c
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/** ****************************************************************************** * @file LwIP/LwIP_TFTP_Server/Src/tftputils.c * @author MCD Application Team * @brief tftp utils source file. ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ #include <string.h> #include "tftputils.h" /** * @brief Extracts the opcode from a TFTP message **//* ... */ tftp_opcode tftp_decode_op(char *buf) { return (tftp_opcode)(buf[1]); }{ ... } /** * @brief Extracts the block number from TFTP message **//* ... */ u16_t tftp_extract_block(char *buf) { u16_t *b = (u16_t*)buf; return ntohs(b[1]); }{ ... } /** * @brief Extracts the filename from TFTP message **//* ... */ void tftp_extract_filename(char *fname, char *buf) { strcpy(fname, buf + 2); }{ ... } /** * @brief set the opcode in TFTP message: RRQ / WRQ / DATA / ACK / ERROR **//* ... */ void tftp_set_opcode(char *buffer, tftp_opcode opcode) { buffer[0] = 0; buffer[1] = (u8_t)opcode; }{ ... } /** * @brief Set the errorcode in TFTP message **//* ... */ void tftp_set_errorcode(char *buffer, tftp_errorcode errCode) { buffer[2] = 0; buffer[3] = (u8_t)errCode; }{ ... } /** * @brief Sets the error message **//* ... */ void tftp_set_errormsg(char * buffer, char* errormsg) { strcpy(buffer + 4, errormsg); }{ ... } /** * @brief Sets the block number **//* ... */ void tftp_set_block(char* packet, u16_t block) { u16_t *p = (u16_t *)packet; p[1] = htons(block); }{ ... } /** * @brief Set the data message **//* ... */ void tftp_set_data_message(char* packet, char* buf, int buflen) { memcpy(packet + 4, buf, buflen); }{ ... } /** * @brief Check if the received acknowledgement is correct **//* ... */ u32_t tftp_is_correct_ack(char *buf, int block) { /* first make sure this is a data ACK packet */ if (tftp_decode_op(buf) != TFTP_ACK) return 0; /* then compare block numbers */ if (block != tftp_extract_block(buf)) return 0; return 1; }{ ... }