src/syren_os.c

   1 /*
   2   Syren -- a lightweight downloader for Linux/BSD/Win/MacOSX
   3   inspired by Axel Copyright 2001-2002 Wilmer van der Gaast
   4   version 0.0.6 (atomic alien)
   5   coded by Ketmar // Avalon Group
   6
   7   This program is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation; either version 2 of the License, or
  10   (at your option) any later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License with
  18   the Debian GNU/Linux distribution in file /usr/doc/copyright/GPL;
  19   if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  20   Suite 330, Boston, MA  02111-1307  USA
  21 */
  22 /*
  23   Syren os-specific functions
  24  */
  25 #ifndef _SYREN_OS_C
  26 #define _SYREN_OS_C
  27
  28 #include "syren_os.h"
  29
  30
  31
  32 double SyGetTimeD (void) {
  33 #ifdef WINDOZE
  34   return ((double)GetTickCount())/1000;
  35 #else
  36   struct timeval time;
  37   gettimeofday(&time, 0);
  38   return ((double)time.tv_sec+(double)time.tv_usec/1000000);
  39 #endif
  40 }
  41
  42
  43 #ifdef WINDOZE
  44 /* find subs in str; case insensitive; return pointer to start or NULL */
  45 char *strcasestr (const char *str, const char *subs) {
  46   const char *t1 = subs, *t0 = str;
  47   int l0 = strlen(t0), l1 = strlen(t1);
  48
  49   while (l0 >= l1) {
  50     if (CompareString(LOCALE_USER_DEFAULT, NORM_IGNORECASE, t0, l1, t1, l1) == 2) return (char *)t0;
  51     t0++; l0--;
  52   }
  53   return NULL;
  54 }
  55 #endif
  56
  57
  58
  59 #ifdef SY_INCLUDE_FILE_IO
  60 TSyResult SyDeleteFile (const char *fname) {
  61 #ifdef WINDOZE
  62   if (DeleteFile(fname)) return SY_OK;
  63 #else
  64   if (!unlink(fname)) return SY_OK;
  65 #endif
  66   return SY_ERROR;
  67 }
  68
  69
  70 int SyOpenFile (const char *fname, TSyFileMode mode, TSyBool mustCreate) {
  71 #ifdef WINDOZE
  72   DWORD mm = (mode==SY_FMODE_WRITE)?GENERIC_WRITE:GENERIC_READ;
  73   DWORD crea = (mustCreate!=SY_FALSE)?OPEN_ALWAYS:OPEN_EXISTING;
  74   HANDLE h;
  75
  76   h = CreateFile(fname, mm, FILE_SHARE_READ, NULL, crea, FILE_ATTRIBUTE_NORMAL, NULL);
  77   if (h) return (int)h;
  78   return -1;
  79 #else
  80   int mm = (mode==SY_FMODE_WRITE)?O_WRONLY:O_RDONLY;
  81
  82   if (mustCreate != SY_FALSE) mm = mm | O_CREAT;
  83   return open(fname, mm, SY_FILE_DEFMODE);
  84 #endif
  85 }
  86
  87
  88 TSyResult SyWriteFile (int fd, const void *buf, int count) {
  89 #ifdef WINDOZE
  90   DWORD wr;
  91   if (!WriteFile((HANDLE)fd, buf, count, &wr, NULL)) return SY_ERROR;
  92 #else
  93   int wr = write(fd, buf, count);
  94 #endif
  95   if (wr != count) return SY_ERROR;
  96   return SY_OK;
  97 }
  98
  99
 100 TSyResult SyReadFile (int fd, void *buf, int count) {
 101 #ifdef WINDOZE
 102   DWORD rd;
 103   if (!ReadFile((HANDLE)fd, buf, count, &rd, NULL)) return -1;
 104 #else
 105   int rd = read(fd, buf, count);
 106 #endif
 107   if (rd != count) return SY_ERROR;
 108   return SY_OK;
 109 }
 110
 111
 112 TSyResult SySeekFile (int fd, int64_t offset) {
 113 #ifdef WINDOZE
 114   DWORD res;
 115   LONG *ofsp = (void *)(&offset);
 116   if (offset < 0) res = SetFilePointer((HANDLE)fd, 0, NULL, FILE_END);
 117   else res = SetFilePointer((HANDLE)fd, *ofsp, ofsp+1, FILE_BEGIN);
 118   if (res == (DWORD)0xFFFFFFFF && GetLastError() != NO_ERROR) return SY_ERROR;
 119 #else
 120   //!!
 121   offset = offset<0?SY_LSEEK(fd, offset, SEEK_END):SY_LSEEK(fd, offset, SEEK_SET);
 122   if (offset < 0) return SY_ERROR;
 123 #endif
 124   return SY_OK;
 125 }
 126
 127
 128 int64_t SyFileSize (int fd) {
 129   int64_t size;
 130 #ifdef WINDOZE
 131   DWORD s0, s1, p0, p1 = 0;
 132   p0 = SetFilePointer((HANDLE)fd, 0, (LONG *)&p1, FILE_CURRENT);
 133   if (p0 == (DWORD)0xFFFFFFFF && GetLastError() != NO_ERROR) return -1;
 134   s0 = SetFilePointer((HANDLE)fd, 0, (LONG *)&s1, FILE_END);
 135   if (p0 == (DWORD)0xFFFFFFFF && GetLastError() != NO_ERROR) return -1;
 136   size = (int64_t)s0+((int64_t)s1<<32);
 137   p0 = SetFilePointer((HANDLE)fd, p0, (LONG *)&p1, FILE_BEGIN);
 138   if (p0 == (DWORD)0xFFFFFFFF && GetLastError() != NO_ERROR) return SY_ERROR;
 139 #else
 140   int64_t ppos = SY_LSEEK(fd, 0, SEEK_CUR);
 141   if (ppos < 0) return -1;
 142   size = SY_LSEEK(fd, 0, SEEK_END);
 143   if (SY_LSEEK(fd, ppos, SEEK_SET) < 0) return -1;
 144 #endif
 145   return size;
 146 }
 147 #endif
 148
 149
 150 TSyResult SySocketInit (void) {
 151 #ifdef WINDOZE
 152   WSADATA wsaData;
 153   WORD wVersionRequested = MAKEWORD(2, 0);
 154   int err = WSAStartup(wVersionRequested, &wsaData);
 155   if (err != 0) {
 156     wVersionRequested = MAKEWORD(1, 1);
 157     err = WSAStartup(wVersionRequested, &wsaData);
 158     if (err != 0) return SY_ERROR;
 159   }
 160 #endif
 161   return SY_OK;
 162 }
 163
 164 void SySocketShutdown (void) {
 165 #ifdef WINDOZE
 166   WSACleanup();
 167 #endif
 168 }
 169
 170
 171 #endif