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
|
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "test/core/util/parse_hexstring.h"
#include <grpc/support/log.h>
grpc_slice parse_hexstring(const char *hexstring) {
size_t nibbles = 0;
const char *p = 0;
uint8_t *out;
uint8_t temp;
grpc_slice slice;
for (p = hexstring; *p; p++) {
nibbles += (*p >= '0' && *p <= '9') || (*p >= 'a' && *p <= 'f');
}
GPR_ASSERT((nibbles & 1) == 0);
slice = grpc_slice_malloc(nibbles / 2);
out = GRPC_SLICE_START_PTR(slice);
nibbles = 0;
temp = 0;
for (p = hexstring; *p; p++) {
if (*p >= '0' && *p <= '9') {
temp = (uint8_t)(temp << 4) | (uint8_t)(*p - '0');
nibbles++;
} else if (*p >= 'a' && *p <= 'f') {
temp = (uint8_t)(temp << 4) | (uint8_t)(*p - 'a' + 10);
nibbles++;
}
if (nibbles == 2) {
*out++ = temp;
nibbles = 0;
}
}
return slice;
}
|
