2 * $Id: byte_manager.c 44 2011-02-15 12:32:29Z kaori $
4 * Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
5 * Copyright (c) 2002-2011, Professor Benoit Macq
6 * Copyright (c) 2010-2011, Kaori Hagihara
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/types.h>
35 #include "byte_manager.h"
38 #include "fcgi_stdio.h"
39 #define logstream FCGI_stdout
41 #define FCGI_stdout stdout
42 #define FCGI_stderr stderr
43 #define logstream stderr
47 Byte_t * fetch_bytes( int fd, long offset, int size)
51 if( lseek( fd, offset, SEEK_SET)==-1){
52 fprintf( FCGI_stdout, "Reason: Target broken (fseek error)\r\n");
53 fprintf( FCGI_stderr, "Error: error in fetch_bytes( %d, %ld, %d)\n", fd, offset, size);
57 data = (Byte_t *)malloc( size);
59 if( read( fd, data, size) != size){
61 fprintf( FCGI_stdout, "Reason: Target broken (read error)\r\n");
62 fprintf( FCGI_stderr, "Error: error in fetch_bytes( %d, %ld, %d)\n", fd, offset, size);
68 Byte_t fetch_1byte( int fd, long offset)
72 if( lseek( fd, offset, SEEK_SET)==-1){
73 fprintf( FCGI_stdout, "Reason: Target broken (seek error)\r\n");
74 fprintf( FCGI_stderr, "Error: error in fetch_1byte( %d, %ld)\n", fd, offset);
78 if( read( fd, &code, 1) != 1){
79 fprintf( FCGI_stdout, "Reason: Target broken (read error)\r\n");
80 fprintf( FCGI_stderr, "Error: error in fetch_bytes( %d, %ld)\n", fd, offset);
86 Byte2_t fetch_2bytebigendian( int fd, long offset)
91 if(!(data = fetch_bytes( fd, offset, 2))){
92 fprintf( FCGI_stderr, "Error: error in fetch_2bytebigendian( %d, %ld)\n", fd, offset);
101 Byte4_t fetch_4bytebigendian( int fd, long offset)
106 if(!(data = fetch_bytes( fd, offset, 4))){
107 fprintf( FCGI_stderr, "Error: error in fetch_4bytebigendian( %d, %ld)\n", fd, offset);
116 Byte8_t fetch_8bytebigendian( int fd, long offset)
121 if(!(data = fetch_bytes( fd, offset, 8))){
122 fprintf( FCGI_stderr, "Error: error in fetch_8bytebigendian( %d, %ld)\n", fd, offset);
132 Byte2_t big2( Byte_t *buf)
134 return (((Byte2_t) buf[0]) << 8) + ((Byte2_t) buf[1]);
137 Byte4_t big4( Byte_t *buf)
139 return (((((((Byte4_t) buf[0]) << 8) + ((Byte4_t) buf[1])) << 8)
140 + ((Byte4_t) buf[2])) << 8) + ((Byte4_t) buf[3]);
143 Byte8_t big8( Byte_t *buf)
145 return (((Byte8_t) big4 (buf)) << 32)
146 + ((Byte8_t) big4 (buf + 4));