mirror of
https://github.com/mpv-player/mpv.git
synced 2024-09-19 19:42:24 +02:00
d84a7c5112
Also rename the field to appropriately reflect what it is supposed to be used for. The only other use of this was to search for ordered chapter sources, and that makes no sense for mkv files from stdin. This also fixes autocreate-playlist loading in the current directory when the input file is stdin.
415 lines
12 KiB
C
415 lines
12 KiB
C
/*
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* Original authors: Albeu, probably Arpi
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*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#ifndef _WIN32
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#include <poll.h>
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#endif
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#include "osdep/io.h"
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#include "common/common.h"
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#include "common/msg.h"
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#include "misc/thread_tools.h"
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#include "stream.h"
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#include "options/m_option.h"
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#include "options/path.h"
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#if HAVE_BSD_FSTATFS
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#include <sys/param.h>
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#include <sys/mount.h>
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#endif
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#if HAVE_LINUX_FSTATFS
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#include <sys/vfs.h>
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#include <winioctl.h>
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#include <winternl.h>
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#include <io.h>
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#ifdef _MSC_VER
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// Those are defined only in Windows DDK
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typedef struct _FILE_FS_DEVICE_INFORMATION {
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DEVICE_TYPE DeviceType;
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ULONG Characteristics;
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} FILE_FS_DEVICE_INFORMATION, *PFILE_FS_DEVICE_INFORMATION;
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typedef enum _FSINFOCLASS {
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FileFsVolumeInformation = 1,
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FileFsLabelInformation, // 2
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FileFsSizeInformation, // 3
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FileFsDeviceInformation, // 4
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FileFsAttributeInformation, // 5
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FileFsControlInformation, // 6
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FileFsFullSizeInformation, // 7
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FileFsObjectIdInformation, // 8
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FileFsDriverPathInformation, // 9
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FileFsVolumeFlagsInformation, // 10
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FileFsSectorSizeInformation, // 11
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FileFsDataCopyInformation, // 12
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FileFsMetadataSizeInformation, // 13
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FileFsFullSizeInformationEx, // 14
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FileFsGuidInformation, // 15
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FileFsMaximumInformation
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} FS_INFORMATION_CLASS, *PFS_INFORMATION_CLASS;
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#endif
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#ifndef FILE_REMOTE_DEVICE
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#define FILE_REMOTE_DEVICE (0x10)
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#endif
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#endif
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struct priv {
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int fd;
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bool close;
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bool use_poll;
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bool regular_file;
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bool appending;
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int64_t orig_size;
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struct mp_cancel *cancel;
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};
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// Total timeout = RETRY_TIMEOUT * MAX_RETRIES
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#define RETRY_TIMEOUT 0.2
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#define MAX_RETRIES 10
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static int64_t get_size(stream_t *s)
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{
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struct priv *p = s->priv;
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struct stat st;
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if (fstat(p->fd, &st) == 0) {
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if (st.st_size <= 0 && !s->seekable)
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st.st_size = -1;
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if (st.st_size >= 0)
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return st.st_size;
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}
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return -1;
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}
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static int fill_buffer(stream_t *s, void *buffer, int max_len)
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{
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struct priv *p = s->priv;
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#ifndef _WIN32
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if (p->use_poll) {
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int c = mp_cancel_get_fd(p->cancel);
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struct pollfd fds[2] = {
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{.fd = p->fd, .events = POLLIN},
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{.fd = c, .events = POLLIN},
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};
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poll(fds, c >= 0 ? 2 : 1, -1);
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if (fds[1].revents & POLLIN)
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return -1;
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}
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#endif
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for (int retries = 0; retries < MAX_RETRIES; retries++) {
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int r = read(p->fd, buffer, max_len);
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if (r > 0)
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return r;
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// Try to detect and handle files being appended during playback.
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int64_t size = get_size(s);
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if (p->regular_file && size > p->orig_size && !p->appending) {
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MP_WARN(s, "File is apparently being appended to, will keep "
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"retrying with timeouts.\n");
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p->appending = true;
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}
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if (!p->appending || p->use_poll)
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break;
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if (mp_cancel_wait(p->cancel, RETRY_TIMEOUT))
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break;
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}
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return 0;
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}
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static int write_buffer(stream_t *s, void *buffer, int len)
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{
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struct priv *p = s->priv;
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return write(p->fd, buffer, len);
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}
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static int seek(stream_t *s, int64_t newpos)
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{
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struct priv *p = s->priv;
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return lseek(p->fd, newpos, SEEK_SET) != (off_t)-1;
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}
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static void s_close(stream_t *s)
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{
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struct priv *p = s->priv;
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if (p->close)
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close(p->fd);
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}
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// If url is a file:// URL, return the local filename, otherwise return NULL.
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char *mp_file_url_to_filename(void *talloc_ctx, bstr url)
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{
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bstr proto = mp_split_proto(url, &url);
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if (bstrcasecmp0(proto, "file") != 0)
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return NULL;
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char *filename = bstrto0(talloc_ctx, url);
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mp_url_unescape_inplace(filename);
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#if HAVE_DOS_PATHS
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// extract '/' from '/x:/path'
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if (filename[0] == '/' && filename[1] && filename[2] == ':')
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memmove(filename, filename + 1, strlen(filename)); // including \0
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#endif
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return filename;
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}
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// Return talloc_strdup's filesystem path if local, otherwise NULL.
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// Unlike mp_file_url_to_filename(), doesn't return NULL if already local.
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char *mp_file_get_path(void *talloc_ctx, bstr url)
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{
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if (mp_split_proto(url, &(bstr){0}).len) {
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return mp_file_url_to_filename(talloc_ctx, url);
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} else {
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return bstrto0(talloc_ctx, url);
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}
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}
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#if HAVE_BSD_FSTATFS
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static bool check_stream_network(int fd)
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{
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struct statfs fs;
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const char *stypes[] = { "afpfs", "nfs", "smbfs", "webdav", "osxfusefs",
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"fuse", "fusefs.sshfs", "macfuse", NULL };
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if (fstatfs(fd, &fs) == 0)
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for (int i=0; stypes[i]; i++)
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if (strcmp(stypes[i], fs.f_fstypename) == 0)
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return true;
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return false;
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}
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#elif HAVE_LINUX_FSTATFS
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static bool check_stream_network(int fd)
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{
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struct statfs fs;
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const uint32_t stypes[] = {
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0x5346414F /*AFS*/, 0x61756673 /*AUFS*/, 0x00C36400 /*CEPH*/,
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0xFF534D42 /*CIFS*/, 0x73757245 /*CODA*/, 0x19830326 /*FHGFS*/,
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0x65735546 /*FUSEBLK*/,0x65735543 /*FUSECTL*/,0x1161970 /*GFS*/,
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0x47504653 /*GPFS*/, 0x6B414653 /*KAFS*/, 0x0BD00BD0 /*LUSTRE*/,
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0x564C /*NCP*/, 0x6969 /*NFS*/, 0x6E667364 /*NFSD*/,
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0xAAD7AAEA /*PANFS*/, 0x50495045 /*PIPEFS*/, 0x517B /*SMB*/,
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0xBEEFDEAD /*SNFS*/, 0xBACBACBC /*VMHGFS*/, 0x7461636f /*OCFS2*/,
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0xFE534D42 /*SMB2*/, 0x61636673 /*ACFS*/, 0x013111A8 /*IBRIX*/,
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0
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};
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if (fstatfs(fd, &fs) == 0) {
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for (int i=0; stypes[i]; i++) {
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if (stypes[i] == fs.f_type)
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return true;
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}
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}
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return false;
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}
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#elif defined(_WIN32)
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static bool check_stream_network(int fd)
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{
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NTSTATUS (NTAPI *pNtQueryVolumeInformationFile)(HANDLE,
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PIO_STATUS_BLOCK, PVOID, ULONG, FS_INFORMATION_CLASS) = NULL;
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// NtQueryVolumeInformationFile is an internal Windows function. It has
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// been present since Windows XP, however this code should fail gracefully
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// if it's removed from a future version of Windows.
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HMODULE ntdll = GetModuleHandleW(L"ntdll.dll");
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pNtQueryVolumeInformationFile = (NTSTATUS (NTAPI*)(HANDLE,
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PIO_STATUS_BLOCK, PVOID, ULONG, FS_INFORMATION_CLASS))
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GetProcAddress(ntdll, "NtQueryVolumeInformationFile");
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if (!pNtQueryVolumeInformationFile)
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return false;
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HANDLE h = (HANDLE)_get_osfhandle(fd);
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if (h == INVALID_HANDLE_VALUE)
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return false;
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FILE_FS_DEVICE_INFORMATION info = { 0 };
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IO_STATUS_BLOCK io;
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NTSTATUS status = pNtQueryVolumeInformationFile(h, &io, &info,
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sizeof(info), FileFsDeviceInformation);
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if (!NT_SUCCESS(status))
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return false;
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return info.DeviceType == FILE_DEVICE_NETWORK_FILE_SYSTEM ||
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(info.Characteristics & FILE_REMOTE_DEVICE);
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}
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#else
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static bool check_stream_network(int fd)
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{
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return false;
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}
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#endif
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static int open_f(stream_t *stream, const struct stream_open_args *args)
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{
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struct priv *p = talloc_ptrtype(stream, p);
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*p = (struct priv) {
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.fd = -1,
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};
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stream->priv = p;
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stream->is_local_fs = true;
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bool strict_fs = args->flags & STREAM_LOCAL_FS_ONLY;
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bool write = stream->mode == STREAM_WRITE;
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int m = O_CLOEXEC | (write ? O_RDWR | O_CREAT | O_TRUNC : O_RDONLY);
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char *filename = stream->path;
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char *url = "";
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if (!strict_fs) {
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char *fn = mp_file_url_to_filename(stream, bstr0(stream->url));
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if (fn)
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filename = stream->path = fn;
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url = stream->url;
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}
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bool is_fdclose = strncmp(url, "fdclose://", 10) == 0;
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if (strncmp(url, "fd://", 5) == 0 || is_fdclose) {
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stream->is_local_fs = false;
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char *begin = strstr(stream->url, "://") + 3, *end = NULL;
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p->fd = strtol(begin, &end, 0);
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if (!end || end == begin || end[0] || p->fd < 0) {
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MP_ERR(stream, "Invalid FD number: %s\n", stream->url);
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return STREAM_ERROR;
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}
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#ifdef F_SETFD
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if (fcntl(p->fd, F_GETFD) == -1) {
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MP_ERR(stream, "Invalid FD: %d\n", p->fd);
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return STREAM_ERROR;
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}
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#endif
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if (is_fdclose)
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p->close = true;
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} else if (!strict_fs && !strcmp(filename, "-")) {
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stream->is_local_fs = false;
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if (!write) {
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MP_INFO(stream, "Reading from stdin...\n");
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p->fd = 0;
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} else {
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MP_INFO(stream, "Writing to stdout...\n");
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p->fd = 1;
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}
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} else {
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if (bstr_startswith0(bstr0(stream->url), "appending://"))
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p->appending = true;
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mode_t openmode = S_IRUSR | S_IWUSR;
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#ifndef __MINGW32__
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openmode |= S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
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if (!write)
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m |= O_NONBLOCK;
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#endif
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p->fd = open(filename, m | O_BINARY, openmode);
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if (p->fd < 0) {
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MP_ERR(stream, "Cannot open file '%s': %s\n",
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filename, mp_strerror(errno));
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return STREAM_ERROR;
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}
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p->close = true;
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}
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struct stat st;
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bool is_sock_or_fifo = false;
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if (fstat(p->fd, &st) == 0) {
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if (S_ISDIR(st.st_mode)) {
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stream->is_directory = true;
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} else if (S_ISREG(st.st_mode)) {
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p->regular_file = true;
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#ifndef _WIN32
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// O_NONBLOCK has weird semantics on file locks; remove it.
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int val = fcntl(p->fd, F_GETFL) & ~(unsigned)O_NONBLOCK;
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fcntl(p->fd, F_SETFL, val);
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#endif
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} else {
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#ifndef __MINGW32__
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is_sock_or_fifo = S_ISSOCK(st.st_mode) || S_ISFIFO(st.st_mode);
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#endif
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p->use_poll = true;
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}
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}
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#ifdef _WIN32
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setmode(p->fd, O_BINARY);
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#endif
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off_t len = lseek(p->fd, 0, SEEK_END);
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lseek(p->fd, 0, SEEK_SET);
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if (len != (off_t)-1) {
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stream->seek = seek;
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stream->seekable = true;
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}
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stream->fast_skip = true;
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stream->fill_buffer = fill_buffer;
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stream->write_buffer = write_buffer;
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stream->get_size = get_size;
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stream->close = s_close;
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if (is_sock_or_fifo || check_stream_network(p->fd)) {
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stream->streaming = true;
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#if HAVE_COCOA
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if (fcntl(p->fd, F_RDAHEAD, 0) < 0) {
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MP_VERBOSE(stream, "Cannot disable read ahead on file '%s': %s\n",
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filename, mp_strerror(errno));
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}
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#endif
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}
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p->orig_size = get_size(stream);
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p->cancel = mp_cancel_new(p);
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if (stream->cancel)
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mp_cancel_set_parent(p->cancel, stream->cancel);
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return STREAM_OK;
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}
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const stream_info_t stream_info_file = {
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.name = "file",
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.open2 = open_f,
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.protocols = (const char*const[]){ "file", "", "appending", NULL },
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.can_write = true,
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.local_fs = true,
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.stream_origin = STREAM_ORIGIN_FS,
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};
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const stream_info_t stream_info_fd = {
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.name = "fd",
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.open2 = open_f,
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.protocols = (const char*const[]){ "fd", "fdclose", NULL },
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.can_write = true,
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.stream_origin = STREAM_ORIGIN_UNSAFE,
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};
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