src/helper/replacements.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef REPLACEMENTS_H
  21 #define REPLACEMENTS_H
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "types.h"
  28
  29 /* include necessary headers for socket functionality */
  30 #ifdef _WIN32
  31 #include <winsock2.h>
  32 #else
  33 #include <sys/socket.h>
  34 #include <sys/poll.h>
  35 #include <netinet/in.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38 #endif
  39
  40 #ifdef HAVE_SYS_PARAM_H
  41 #include <sys/param.h> /* for MIN/MAX macros */
  42 #endif
  43
  44 /* MIN,MAX macros */
  45 #ifndef MIN
  46 #define MIN(a,b) (((a)<(b))?(a):(b))
  47 #endif
  48 #ifndef MAX
  49 #define MAX(a,b) (((a)>(b))?(a):(b))
  50 #endif
  51
  52 /* gettimeofday() */
  53 #ifndef HAVE_GETTIMEOFDAY
  54
  55 #ifndef _TIMEVAL_DEFINED
  56 #define _TIMEVAL_DEFINED
  57
  58 struct timeval {
  59         long tv_sec;
  60         long tv_usec;
  61 };
  62 #endif /* _TIMEVAL_DEFINED */
  63
  64 struct timezone {
  65     int tz_minuteswest;
  66         int tz_dsttime;
  67 };
  68
  69 extern int gettimeofday(struct timeval *tv, struct timezone *tz);
  70 #endif
  71
  72 /* GNU extensions to the C library that may be missing on some systems */
  73 #ifndef HAVE_STRNDUP
  74 extern char* strndup(const char *s, size_t n);
  75 #endif /* HAVE_STRNDUP */
  76
  77 #ifndef HAVE_STRNLEN
  78 extern size_t strnlen(const char *s, size_t maxlen);
  79 #endif /* HAVE_STRNLEN */
  80
  81 #ifndef HAVE_USLEEP
  82 static __inline unsigned usleep(unsigned int usecs)
  83 {
  84 #ifdef _WIN32
  85         Sleep((usecs/1000));
  86         return 0;
  87 #else
  88 #error no usleep defined for your platform
  89 #endif
  90 }
  91 #endif /* HAVE_USLEEP */
  92
  93 /* Windows specific */
  94 #ifdef _WIN32
  95
  96 #define WIN32_LEAN_AND_MEAN
  97 #include <windows.h>
  98 #include <time.h>
  99
 100 #undef ERROR
 101
 102 #if IS_MINGW == 1
 103 static __inline unsigned char inb(unsigned short int port)
 104 {
 105         unsigned char _v;
 106         __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
 107         return _v;
 108 }
 109
 110 static __inline void outb(unsigned char value, unsigned short int port)
 111 {
 112         __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
 113 }
 114
 115 #endif /* IS_MINGW */
 116 #endif  /* _WIN32 */
 117
 118 /* generic socket functions for Windows and Posix */
 119 static __inline int write_socket( int handle, const void *buffer, unsigned int count )
 120 {
 121 #ifdef _WIN32
 122     return send(handle, buffer, count, 0);
 123 #else
 124     return write(handle, buffer, count);
 125 #endif
 126 }
 127
 128 static __inline int read_socket( int handle, void *buffer, unsigned int count )
 129 {
 130 #ifdef _WIN32
 131     return recv(handle, buffer, count, 0);
 132 #else
 133     return read(handle, buffer, count);
 134 #endif
 135 }
 136
 137 static __inline int close_socket(int sock)
 138 {
 139 #ifdef _WIN32
 140     return closesocket(sock);
 141 #else
 142     return close(sock);
 143 #endif
 144 }
 145
 146 static __inline void socket_nonblock(int fd)
 147 {
 148 #ifdef _WIN32
 149         long nonblock = 1;
 150         ioctlsocket(fd, FIONBIO, &nonblock );
 151 #else
 152         int oldopts = fcntl(fd, F_GETFL, 0);
 153         fcntl(fd, F_SETFL, oldopts | O_NONBLOCK);
 154 #endif
 155 }
 156
 157 #ifndef HAVE_ELF_H
 158
 159 typedef struct
 160 {
 161         unsigned char   e_ident[16];    /* Magic number and other info */
 162         u16     e_type;                 /* Object file type */
 163         u16     e_machine;              /* Architecture */
 164         u32     e_version;              /* Object file version */
 165         u32 e_entry;            /* Entry point virtual address */
 166         u32 e_phoff;            /* Program header table file offset */
 167         u32     e_shoff;                /* Section header table file offset */
 168         u32     e_flags;                /* Processor-specific flags */
 169         u16     e_ehsize;               /* ELF header size in bytes */
 170         u16     e_phentsize;            /* Program header table entry size */
 171         u16     e_phnum;                /* Program header table entry count */
 172         u16     e_shentsize;            /* Section header table entry size */
 173         u16     e_shnum;                /* Section header table entry count */
 174         u16     e_shstrndx;             /* Section header string table index */
 175 } Elf32_Ehdr;
 176
 177 #define ELFMAG          "\177ELF"
 178 #define SELFMAG         4
 179
 180 #define EI_CLASS        4               /* File class byte index */
 181 #define ELFCLASS32      1               /* 32-bit objects */
 182 #define ELFCLASS64      2               /* 64-bit objects */
 183
 184 #define EI_DATA         5               /* Data encoding byte index */
 185 #define ELFDATA2LSB     1               /* 2's complement, little endian */
 186 #define ELFDATA2MSB     2               /* 2's complement, big endian */
 187
 188 typedef struct
 189 {
 190         u32 p_type;                     /* Segment type */
 191         u32 p_offset;           /* Segment file offset */
 192         u32 p_vaddr;            /* Segment virtual address */
 193         u32 p_paddr;            /* Segment physical address */
 194         u32 p_filesz;           /* Segment size in file */
 195         u32 p_memsz;            /* Segment size in memory */
 196         u32 p_flags;            /* Segment flags */
 197         u32 p_align;            /* Segment alignment */
 198 } Elf32_Phdr;
 199
 200 #define PT_LOAD         1               /* Loadable program segment */
 201
 202 #endif /* HAVE_ELF_H */
 203
 204 #endif /* REPLACEMENTS_H */