[337] | 1 | /***************************************************************************
|
---|
| 2 | * _ _ ____ _
|
---|
| 3 | * Project ___| | | | _ \| |
|
---|
| 4 | * / __| | | | |_) | |
|
---|
| 5 | * | (__| |_| | _ <| |___
|
---|
| 6 | * \___|\___/|_| \_\_____|
|
---|
| 7 | *
|
---|
| 8 | * Copyright (C) 1998 - 2017, 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.haxx.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 | ***************************************************************************/
|
---|
| 22 |
|
---|
| 23 | #include "curl_setup.h"
|
---|
| 24 |
|
---|
| 25 | #include "curl_endian.h"
|
---|
| 26 |
|
---|
| 27 | /*
|
---|
| 28 | * Curl_read16_le()
|
---|
| 29 | *
|
---|
| 30 | * This function converts a 16-bit integer from the little endian format, as
|
---|
| 31 | * used in the incoming package to whatever endian format we're using
|
---|
| 32 | * natively.
|
---|
| 33 | *
|
---|
| 34 | * Parameters:
|
---|
| 35 | *
|
---|
| 36 | * buf [in] - A pointer to a 2 byte buffer.
|
---|
| 37 | *
|
---|
| 38 | * Returns the integer.
|
---|
| 39 | */
|
---|
| 40 | unsigned short Curl_read16_le(const unsigned char *buf)
|
---|
| 41 | {
|
---|
| 42 | return (unsigned short)(((unsigned short)buf[0]) |
|
---|
| 43 | ((unsigned short)buf[1] << 8));
|
---|
| 44 | }
|
---|
| 45 |
|
---|
| 46 | /*
|
---|
| 47 | * Curl_read32_le()
|
---|
| 48 | *
|
---|
| 49 | * This function converts a 32-bit integer from the little endian format, as
|
---|
| 50 | * used in the incoming package to whatever endian format we're using
|
---|
| 51 | * natively.
|
---|
| 52 | *
|
---|
| 53 | * Parameters:
|
---|
| 54 | *
|
---|
| 55 | * buf [in] - A pointer to a 4 byte buffer.
|
---|
| 56 | *
|
---|
| 57 | * Returns the integer.
|
---|
| 58 | */
|
---|
| 59 | unsigned int Curl_read32_le(const unsigned char *buf)
|
---|
| 60 | {
|
---|
| 61 | return ((unsigned int)buf[0]) | ((unsigned int)buf[1] << 8) |
|
---|
| 62 | ((unsigned int)buf[2] << 16) | ((unsigned int)buf[3] << 24);
|
---|
| 63 | }
|
---|
| 64 |
|
---|
| 65 | /*
|
---|
| 66 | * Curl_read16_be()
|
---|
| 67 | *
|
---|
| 68 | * This function converts a 16-bit integer from the big endian format, as
|
---|
| 69 | * used in the incoming package to whatever endian format we're using
|
---|
| 70 | * natively.
|
---|
| 71 | *
|
---|
| 72 | * Parameters:
|
---|
| 73 | *
|
---|
| 74 | * buf [in] - A pointer to a 2 byte buffer.
|
---|
| 75 | *
|
---|
| 76 | * Returns the integer.
|
---|
| 77 | */
|
---|
| 78 | unsigned short Curl_read16_be(const unsigned char *buf)
|
---|
| 79 | {
|
---|
| 80 | return (unsigned short)(((unsigned short)buf[0] << 8) |
|
---|
| 81 | ((unsigned short)buf[1]));
|
---|
| 82 | }
|
---|
| 83 |
|
---|
| 84 | /*
|
---|
| 85 | * Curl_write32_le()
|
---|
| 86 | *
|
---|
| 87 | * This function converts a 32-bit integer from the native endian format,
|
---|
| 88 | * to little endian format ready for sending down the wire.
|
---|
| 89 | *
|
---|
| 90 | * Parameters:
|
---|
| 91 | *
|
---|
| 92 | * value [in] - The 32-bit integer value.
|
---|
| 93 | * buffer [in] - A pointer to the output buffer.
|
---|
| 94 | */
|
---|
| 95 | void Curl_write32_le(const int value, unsigned char *buffer)
|
---|
| 96 | {
|
---|
| 97 | buffer[0] = (char)(value & 0x000000FF);
|
---|
| 98 | buffer[1] = (char)((value & 0x0000FF00) >> 8);
|
---|
| 99 | buffer[2] = (char)((value & 0x00FF0000) >> 16);
|
---|
| 100 | buffer[3] = (char)((value & 0xFF000000) >> 24);
|
---|
| 101 | }
|
---|
| 102 |
|
---|
| 103 | #if (CURL_SIZEOF_CURL_OFF_T > 4)
|
---|
| 104 | /*
|
---|
| 105 | * Curl_write64_le()
|
---|
| 106 | *
|
---|
| 107 | * This function converts a 64-bit integer from the native endian format,
|
---|
| 108 | * to little endian format ready for sending down the wire.
|
---|
| 109 | *
|
---|
| 110 | * Parameters:
|
---|
| 111 | *
|
---|
| 112 | * value [in] - The 64-bit integer value.
|
---|
| 113 | * buffer [in] - A pointer to the output buffer.
|
---|
| 114 | */
|
---|
| 115 | #if defined(HAVE_LONGLONG)
|
---|
| 116 | void Curl_write64_le(const long long value, unsigned char *buffer)
|
---|
| 117 | #else
|
---|
| 118 | void Curl_write64_le(const __int64 value, unsigned char *buffer)
|
---|
| 119 | #endif
|
---|
| 120 | {
|
---|
| 121 | Curl_write32_le((int)value, buffer);
|
---|
| 122 | Curl_write32_le((int)(value >> 32), buffer + 4);
|
---|
| 123 | }
|
---|
| 124 | #endif /* CURL_SIZEOF_CURL_OFF_T > 4 */
|
---|