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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
* @copyright Copyright (c) 2016-2020 TOYOTA MOTOR CORPORATION.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
////////////////////////////////////////////////////////////////////////////////////////////////////
/// \ingroup tag_NS_UtilityCenter
/// \brief This file contains implementation of APIs to calcuate 16-bit and 32-bit CRC checksum of file.
///
////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////
// Include Files
////////////////////////////////////////////////////////////////////////////////////////////////////
#include <native_service/ns_util_crc.h>
#include <stdio.h>
// buffer size for reading from file
#define MAX_BUFFER_SIZE 4096
// Static 32 bit CRC lookup table
UI_16 g_arr_crc16_table[256] = {
};
// Static 32 bit CRC lookup table
UI_32 g_arr_crc32_table[256] = {
};
////////////////////////////////////////////////////////////////////////////////////////////////
/// CalculateCRC16
/// This API calculates the 16 bit CRC checksum of a file
////////////////////////////////////////////////////////////////////////////////////////////////
EFrameworkunifiedStatus CalculateCRC16(PCSTR f_c_file_name, UI_16 &f_ui_check_sum) { // NOLINT (readability/nolint)
EFrameworkunifiedStatus l_e_status = eFrameworkunifiedStatusOK;
CHAR l_c_buffer[MAX_BUFFER_SIZE] = {0};
size_t l_ui_bytes_read = 0;
FILE *l_p_file = NULL;
if (NULL != f_c_file_name) {
f_ui_check_sum = 0xFFFF;
// Open the file
l_p_file = fopen(f_c_file_name, "rbe");
if (NULL == l_p_file) {
l_e_status = eFrameworkunifiedStatusFileLoadError;
} else {
l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
while (0 != l_ui_bytes_read) { // LCOV_EXCL_BR_LINE 11: not a branch
for (UI_32 l_ui_bytes_cnt = 0; l_ui_bytes_cnt < l_ui_bytes_read; l_ui_bytes_cnt++) { // LCOV_EXCL_BR_LINE 11: not a branch
f_ui_check_sum = static_cast<UI_16>(
g_arr_crc16_table[((f_ui_check_sum >> 8) ^ l_c_buffer[l_ui_bytes_cnt]) & 0xFF] ^ (f_ui_check_sum << 8));
}
l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
}
fclose(l_p_file);
l_p_file = NULL;
}
f_ui_check_sum = static_cast<UI_16>(~f_ui_check_sum);
} else {
l_e_status = eFrameworkunifiedStatusInvldParam;
}
return l_e_status;
}
////////////////////////////////////////////////////////////////////////////////////////////////
/// CalculateCRC32
/// This API calculates the 32 bit CRC checksum of a file
////////////////////////////////////////////////////////////////////////////////////////////////
EFrameworkunifiedStatus CalculateCRC32(PCSTR f_c_file_name, UI_32 &f_ui_check_sum) { // NOLINT (readability/nolint)
EFrameworkunifiedStatus l_e_status = eFrameworkunifiedStatusOK;
CHAR l_c_buffer[MAX_BUFFER_SIZE] = {0};
size_t l_ui_bytes_read = 0;
FILE *l_p_file = NULL;
if (NULL != f_c_file_name) {
f_ui_check_sum = 0xFFFFFFFF;
// Open the file
l_p_file = fopen(f_c_file_name, "rbe");
if (NULL == l_p_file) {
l_e_status = eFrameworkunifiedStatusFileLoadError;
} else {
l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
while (0 != l_ui_bytes_read) { // LCOV_EXCL_BR_LINE 11: not a branch
for (UI_32 l_ui_bytes_cnt = 0; l_ui_bytes_cnt < l_ui_bytes_read; l_ui_bytes_cnt++) { // LCOV_EXCL_BR_LINE 11: not a branch
f_ui_check_sum = (f_ui_check_sum >> 8)
^ g_arr_crc32_table[(l_c_buffer[l_ui_bytes_cnt] ^ f_ui_check_sum) & 0xFF];
}
l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
}
fclose(l_p_file);
l_p_file = NULL;
}
f_ui_check_sum = ~f_ui_check_sum;
} else {
l_e_status = eFrameworkunifiedStatusInvldParam;
}
return l_e_status;
}
|
