1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 #include "curl_setup.h"
26
27 #include "curl_endian.h"
28
29 /*
30 * Curl_read16_le()
31 *
32 * This function converts a 16-bit integer from the little endian format, as
33 * used in the incoming package to whatever endian format we are using
34 * natively.
35 *
36 * Parameters:
37 *
38 * buf [in] - A pointer to a 2 byte buffer.
39 *
40 * Returns the integer.
41 */
Curl_read16_le(const unsigned char * buf)42 unsigned short Curl_read16_le(const unsigned char *buf)
43 {
44 return (unsigned short)(((unsigned short)buf[0]) |
45 ((unsigned short)buf[1] << 8));
46 }
47
48 /*
49 * Curl_read32_le()
50 *
51 * This function converts a 32-bit integer from the little endian format, as
52 * used in the incoming package to whatever endian format we are using
53 * natively.
54 *
55 * Parameters:
56 *
57 * buf [in] - A pointer to a 4 byte buffer.
58 *
59 * Returns the integer.
60 */
Curl_read32_le(const unsigned char * buf)61 unsigned int Curl_read32_le(const unsigned char *buf)
62 {
63 return ((unsigned int)buf[0]) | ((unsigned int)buf[1] << 8) |
64 ((unsigned int)buf[2] << 16) | ((unsigned int)buf[3] << 24);
65 }
66
67 /*
68 * Curl_read16_be()
69 *
70 * This function converts a 16-bit integer from the big endian format, as
71 * used in the incoming package to whatever endian format we are using
72 * natively.
73 *
74 * Parameters:
75 *
76 * buf [in] - A pointer to a 2 byte buffer.
77 *
78 * Returns the integer.
79 */
Curl_read16_be(const unsigned char * buf)80 unsigned short Curl_read16_be(const unsigned char *buf)
81 {
82 return (unsigned short)(((unsigned short)buf[0] << 8) |
83 ((unsigned short)buf[1]));
84 }
85
