1 /*
2 * various OS-feature replacement utilities
3 * copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg 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 GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #ifndef AVFORMAT_OS_SUPPORT_H
23 #define AVFORMAT_OS_SUPPORT_H
24
25 /**
26 * @file
27 * miscellaneous OS support macros and functions.
28 */
29
30 #include "config.h"
31
32 #include <sys/stat.h>
33
34 #ifdef _WIN32
35 #if HAVE_DIRECT_H
36 #include <direct.h>
37 #endif
38 #if HAVE_IO_H
39 #include <io.h>
40 #endif
41 #endif
42
43 #ifdef _WIN32
44 # include <fcntl.h>
45 # ifdef lseek
46 # undef lseek
47 # endif
48 # define lseek(f,p,w) _lseeki64((f), (p), (w))
49 # ifdef stat
50 # undef stat
51 # endif
52 # define stat _stati64
53 # ifdef fstat
54 # undef fstat
55 # endif
56 # define fstat(f,s) _fstati64((f), (s))
57 #endif /* defined(_WIN32) */
58
59
60 #ifdef __ANDROID__
61 # if HAVE_UNISTD_H
62 # include <unistd.h>
63 # endif
64 # ifdef lseek
65 # undef lseek
66 # endif
67 # define lseek(f,p,w) lseek64((f), (p), (w))
68 #endif
69
is_dos_path(const char * path)70 static inline int is_dos_path(const char *path)
71 {
72 #if HAVE_DOS_PATHS
73 if (path[0] && path[1] == ':')
74 return 1;
75 #endif
76 return 0;
77 }
78
79 #if defined(_WIN32)
80 #ifndef S_IRUSR
81 #define S_IRUSR S_IREAD
82 #endif
83 #ifndef S_IWUSR
84 #define S_IWUSR S_IWRITE
85 #endif
86 #endif
87
88 #if CONFIG_NETWORK
89 #if defined(_WIN32)
90 #define SHUT_RD SD_RECEIVE
91 #define SHUT_WR SD_SEND
92 #define SHUT_RDWR SD_BOTH
93 #else
94 #include <sys/socket.h>
95 #if !defined(SHUT_RD) /* OS/2, DJGPP */
96 #define SHUT_RD 0
97 #define SHUT_WR 1
98 #define SHUT_RDWR 2
99 #endif
100 #endif
101
102 #if !HAVE_SOCKLEN_T
103 typedef int socklen_t;
104 #endif
105
106 /* most of the time closing a socket is just closing an fd */
107 #if !HAVE_CLOSESOCKET
108 #define closesocket close
109 #endif
110
111 #if !HAVE_POLL_H
112 typedef unsigned long nfds_t;
113
114 #if HAVE_WINSOCK2_H
115 #include <winsock2.h>
116 #endif
117 #if !HAVE_STRUCT_POLLFD
118 struct pollfd {
119 int fd;
120 short events; /* events to look for */
121 short revents; /* events that occurred */
122 };
123
124 /* events & revents */
125 #define POLLIN 0x0001 /* any readable data available */
126 #define POLLOUT 0x0002 /* file descriptor is writeable */
127 #define POLLRDNORM POLLIN
128 #define POLLWRNORM POLLOUT
129 #define POLLRDBAND 0x0008 /* priority readable data */
130 #define POLLWRBAND 0x0010 /* priority data can be written */
131 #define POLLPRI 0x0020 /* high priority readable data */
132
133 /* revents only */
134 #define POLLERR 0x0004 /* errors pending */
135 #define POLLHUP 0x0080 /* disconnected */
136 #define POLLNVAL 0x1000 /* invalid file descriptor */
137 #endif
138
139
140 int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
141 #define poll ff_poll
142 #endif /* HAVE_POLL_H */
143 #endif /* CONFIG_NETWORK */
144
145 #ifdef _WIN32
146 #include <stdio.h>
147 #include <windows.h>
148 #include "libavutil/wchar_filename.h"
149
150 #define DEF_FS_FUNCTION(name, wfunc, afunc) \
151 static inline int win32_##name(const char *filename_utf8) \
152 { \
153 wchar_t *filename_w; \
154 int ret; \
155 \
156 if (utf8towchar(filename_utf8, &filename_w)) \
157 return -1; \
158 if (!filename_w) \
159 goto fallback; \
160 \
161 ret = wfunc(filename_w); \
162 av_free(filename_w); \
163 return ret; \
164 \
165 fallback: \
166 /* filename may be be in CP_ACP */ \
167 return afunc(filename_utf8); \
168 }
169
DEF_FS_FUNCTION(unlink,_wunlink,_unlink)170 DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
171 DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir)
172 DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir)
173
174 #define DEF_FS_FUNCTION2(name, wfunc, afunc, partype) \
175 static inline int win32_##name(const char *filename_utf8, partype par) \
176 { \
177 wchar_t *filename_w; \
178 int ret; \
179 \
180 if (utf8towchar(filename_utf8, &filename_w)) \
181 return -1; \
182 if (!filename_w) \
183 goto fallback; \
184 \
185 ret = wfunc(filename_w, par); \
186 av_free(filename_w); \
187 return ret; \
188 \
189 fallback: \
190 /* filename may be be in CP_ACP */ \
191 return afunc(filename_utf8, par); \
192 }
193
194 DEF_FS_FUNCTION2(access, _waccess, _access, int)
195 DEF_FS_FUNCTION2(stat, _wstati64, _stati64, struct stat*)
196
197 static inline int win32_rename(const char *src_utf8, const char *dest_utf8)
198 {
199 wchar_t *src_w, *dest_w;
200 int ret;
201
202 if (utf8towchar(src_utf8, &src_w))
203 return -1;
204 if (utf8towchar(dest_utf8, &dest_w)) {
205 av_free(src_w);
206 return -1;
207 }
208 if (!src_w || !dest_w) {
209 av_free(src_w);
210 av_free(dest_w);
211 goto fallback;
212 }
213
214 ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
215 av_free(src_w);
216 av_free(dest_w);
217 // Lacking proper mapping from GetLastError() error codes to errno codes
218 if (ret)
219 errno = EPERM;
220 return ret;
221
222 fallback:
223 /* filename may be be in CP_ACP */
224 #if !HAVE_UWP
225 ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
226 if (ret)
227 errno = EPERM;
228 #else
229 /* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
230 * it is available but not allowed by the app certification kit. However,
231 * it's unlikely that anybody would input filenames in CP_ACP there, so this
232 * fallback is kept mostly for completeness. Alternatively we could
233 * do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
234 * explicit conversions with CP_ACP is allegedly forbidden in windows
235 * store apps (or windows phone), and the notion of a native code page
236 * doesn't make much sense there. */
237 ret = rename(src_utf8, dest_utf8);
238 #endif
239 return ret;
240 }
241
242 #define mkdir(a, b) win32_mkdir(a)
243 #define rename win32_rename
244 #define rmdir win32_rmdir
245 #define unlink win32_unlink
246 #define access win32_access
247
248 #endif
249
250 #endif /* AVFORMAT_OS_SUPPORT_H */
251