| 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 | |
| 41 | static int win32_open(const char *filename_utf8, int oflag, int pmode) |
| 42 | { |
| 43 | int fd; |
| 44 | int num_chars; |
| 45 | wchar_t *filename_w; |
| 46 | |
| 47 | /* convert UTF-8 to wide chars */ |
| 48 | num_chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, filename_utf8, -1, NULL, 0); |
| 49 | if (num_chars <= 0) |
| 50 | goto fallback; |
| 51 | filename_w = av_mallocz_array(num_chars, sizeof(wchar_t)); |
| 52 | if (!filename_w) { |
| 53 | errno = ENOMEM; |
| 54 | return -1; |
| 55 | } |
| 56 | MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars); |
| 57 | |
| 58 | fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode); |
| 59 | av_freep(&filename_w); |
| 60 | |
| 61 | if (fd != -1 || (oflag & O_CREAT)) |
| 62 | return fd; |
| 63 | |
| 64 | fallback: |
| 65 | /* filename may be in CP_ACP */ |
| 66 | return _sopen(filename_utf8, oflag, SH_DENYNO, pmode); |
| 67 | } |
| 68 | #define open win32_open |
| 69 | #endif |
| 70 | |
| 71 | int avpriv_open(const char *filename, int flags, ...) |
| 72 | { |
| 73 | int fd; |
| 74 | unsigned int mode = 0; |
| 75 | va_list ap; |
| 76 | |
| 77 | va_start(ap, flags); |
| 78 | if (flags & O_CREAT) |
| 79 | mode = va_arg(ap, unsigned int); |
| 80 | va_end(ap); |
| 81 | |
| 82 | #ifdef O_CLOEXEC |
| 83 | flags |= O_CLOEXEC; |
| 84 | #endif |
| 85 | |
| 86 | fd = open(filename, flags, mode); |
| 87 | #if HAVE_FCNTL |
| 88 | if (fd != -1) { |
| 89 | if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) |
| 90 | av_log(NULL, AV_LOG_DEBUG, "Failed to set close on exec\n"); |
| 91 | } |
| 92 | #endif |
| 93 | |
| 94 | return fd; |
| 95 | } |
| 96 | |
| 97 | FILE *av_fopen_utf8(const char *path, const char *mode) |
| 98 | { |
| 99 | int fd; |
| 100 | int access; |
| 101 | const char *m = mode; |
| 102 | |
| 103 | switch (*m++) { |
| 104 | case 'r': access = O_RDONLY; break; |
| 105 | case 'w': access = O_CREAT|O_WRONLY|O_TRUNC; break; |
| 106 | case 'a': access = O_CREAT|O_WRONLY|O_APPEND; break; |
| 107 | default : |
| 108 | errno = EINVAL; |
| 109 | return NULL; |
| 110 | } |
| 111 | while (*m) { |
| 112 | if (*m == '+') { |
| 113 | access &= ~(O_RDONLY | O_WRONLY); |
| 114 | access |= O_RDWR; |
| 115 | } else if (*m == 'b') { |
| 116 | #ifdef O_BINARY |
| 117 | access |= O_BINARY; |
| 118 | #endif |
| 119 | } else if (*m) { |
| 120 | errno = EINVAL; |
| 121 | return NULL; |
| 122 | } |
| 123 | m++; |
| 124 | } |
| 125 | fd = avpriv_open(path, access, 0666); |
| 126 | if (fd == -1) |
| 127 | return NULL; |
| 128 | return fdopen(fd, mode); |
| 129 | } |