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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #include "config.h"
  20. #include "internal.h"
  21. #include "mem.h"
  22. #include <stdarg.h>
  23. #include <fcntl.h>
  24. #include <sys/stat.h>
  25. #if HAVE_UNISTD_H
  26. #include <unistd.h>
  27. #endif
  28. #if HAVE_IO_H
  29. #include <io.h>
  30. #endif
  31.  
  32. #if defined(_WIN32) && !defined(__MINGW32CE__)
  33. #undef open
  34. #undef lseek
  35. #undef stat
  36. #undef fstat
  37. #include <windows.h>
  38. #include <share.h>
  39. #include <errno.h>
  40. #include "wchar_filename.h"
  41.  
  42. static int win32_open(const char *filename_utf8, int oflag, int pmode)
  43. {
  44.     int fd;
  45.     wchar_t *filename_w;
  46.  
  47.     /* convert UTF-8 to wide chars */
  48.     if (utf8towchar(filename_utf8, &filename_w))
  49.         return -1;
  50.     if (!filename_w)
  51.         goto fallback;
  52.  
  53.     fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode);
  54.     av_freep(&filename_w);
  55.  
  56.     if (fd != -1 || (oflag & O_CREAT))
  57.         return fd;
  58.  
  59. fallback:
  60.     /* filename may be in CP_ACP */
  61.     return _sopen(filename_utf8, oflag, SH_DENYNO, pmode);
  62. }
  63. #define open win32_open
  64. #endif
  65.  
  66. int avpriv_open(const char *filename, int flags, ...)
  67. {
  68.     int fd;
  69.     unsigned int mode = 0;
  70.     va_list ap;
  71.  
  72.     va_start(ap, flags);
  73.     if (flags & O_CREAT)
  74.         mode = va_arg(ap, unsigned int);
  75.     va_end(ap);
  76.  
  77. #ifdef O_CLOEXEC
  78.     flags |= O_CLOEXEC;
  79. #endif
  80. #ifdef O_NOINHERIT
  81.     flags |= O_NOINHERIT;
  82. #endif
  83.  
  84.     fd = open(filename, flags, mode);
  85. #if HAVE_FCNTL
  86.     if (fd != -1) {
  87.         if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
  88.             av_log(NULL, AV_LOG_DEBUG, "Failed to set close on exec\n");
  89.     }
  90. #endif
  91.  
  92.     return fd;
  93. }
  94.  
  95. FILE *av_fopen_utf8(const char *path, const char *mode)
  96. {
  97.     int fd;
  98.     int access;
  99.     const char *m = mode;
  100.  
  101.     switch (*m++) {
  102.     case 'r': access = O_RDONLY; break;
  103.     case 'w': access = O_CREAT|O_WRONLY|O_TRUNC; break;
  104.     case 'a': access = O_CREAT|O_WRONLY|O_APPEND; break;
  105.     default :
  106.         errno = EINVAL;
  107.         return NULL;
  108.     }
  109.     while (*m) {
  110.         if (*m == '+') {
  111.             access &= ~(O_RDONLY | O_WRONLY);
  112.             access |= O_RDWR;
  113.         } else if (*m == 'b') {
  114. #ifdef O_BINARY
  115.             access |= O_BINARY;
  116. #endif
  117.         } else if (*m) {
  118.             errno = EINVAL;
  119.             return NULL;
  120.         }
  121.         m++;
  122.     }
  123.     fd = avpriv_open(path, access, 0666);
  124.     if (fd == -1)
  125.         return NULL;
  126.     return fdopen(fd, mode);
  127. }
  128.