mirror of https://github.com/mpv-player/mpv
374 lines
10 KiB
C
374 lines
10 KiB
C
/*
|
|
* Original authors: Albeu, probably Arpi
|
|
*
|
|
* This file is part of mpv.
|
|
*
|
|
* mpv is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* mpv is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
|
|
#ifndef __MINGW32__
|
|
#include <poll.h>
|
|
#endif
|
|
|
|
#include "osdep/io.h"
|
|
|
|
#include "common/common.h"
|
|
#include "common/msg.h"
|
|
#include "stream.h"
|
|
#include "options/m_option.h"
|
|
#include "options/path.h"
|
|
|
|
#if HAVE_BSD_FSTATFS
|
|
#include <sys/param.h>
|
|
#include <sys/mount.h>
|
|
#endif
|
|
|
|
#if HAVE_LINUX_FSTATFS
|
|
#include <sys/vfs.h>
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#include <winternl.h>
|
|
#include <io.h>
|
|
|
|
#ifndef FILE_REMOTE_DEVICE
|
|
#define FILE_REMOTE_DEVICE (0x10)
|
|
#endif
|
|
#endif
|
|
|
|
struct priv {
|
|
int fd;
|
|
bool close;
|
|
bool use_poll;
|
|
bool regular_file;
|
|
bool appending;
|
|
int64_t orig_size;
|
|
};
|
|
|
|
// Total timeout = RETRY_TIMEOUT * MAX_RETRIES
|
|
#define RETRY_TIMEOUT 0.2
|
|
#define MAX_RETRIES 10
|
|
|
|
static int64_t get_size(stream_t *s)
|
|
{
|
|
struct priv *p = s->priv;
|
|
off_t size = lseek(p->fd, 0, SEEK_END);
|
|
lseek(p->fd, s->pos, SEEK_SET);
|
|
return size == (off_t)-1 ? -1 : size;
|
|
}
|
|
|
|
static int fill_buffer(stream_t *s, char *buffer, int max_len)
|
|
{
|
|
struct priv *p = s->priv;
|
|
|
|
#ifndef __MINGW32__
|
|
if (p->use_poll) {
|
|
int c = s->cancel ? mp_cancel_get_fd(s->cancel) : -1;
|
|
struct pollfd fds[2] = {
|
|
{.fd = p->fd, .events = POLLIN},
|
|
{.fd = c, .events = POLLIN},
|
|
};
|
|
poll(fds, c >= 0 ? 2 : 1, -1);
|
|
if (fds[1].revents & POLLIN)
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
for (int retries = 0; retries < MAX_RETRIES; retries++) {
|
|
int r = read(p->fd, buffer, max_len);
|
|
if (r > 0)
|
|
return r;
|
|
|
|
// Try to detect and handle files being appended during playback.
|
|
int64_t size = get_size(s);
|
|
if (p->regular_file && size > p->orig_size && !p->appending) {
|
|
MP_WARN(s, "File is apparently being appended to, will keep "
|
|
"retrying with timeouts.\n");
|
|
p->appending = true;
|
|
}
|
|
|
|
if (!p->appending || p->use_poll)
|
|
break;
|
|
|
|
if (mp_cancel_wait(s->cancel, RETRY_TIMEOUT))
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_buffer(stream_t *s, char *buffer, int len)
|
|
{
|
|
struct priv *p = s->priv;
|
|
int r = len;
|
|
int wr;
|
|
while (r > 0) {
|
|
wr = write(p->fd, buffer, r);
|
|
if (wr <= 0)
|
|
return -1;
|
|
r -= wr;
|
|
buffer += wr;
|
|
}
|
|
return len - r;
|
|
}
|
|
|
|
static int seek(stream_t *s, int64_t newpos)
|
|
{
|
|
struct priv *p = s->priv;
|
|
return lseek(p->fd, newpos, SEEK_SET) != (off_t)-1;
|
|
}
|
|
|
|
static int control(stream_t *s, int cmd, void *arg)
|
|
{
|
|
switch (cmd) {
|
|
case STREAM_CTRL_GET_SIZE: {
|
|
int64_t size = get_size(s);
|
|
if (size >= 0) {
|
|
*(int64_t *)arg = size;
|
|
return 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return STREAM_UNSUPPORTED;
|
|
}
|
|
|
|
static void s_close(stream_t *s)
|
|
{
|
|
struct priv *p = s->priv;
|
|
if (p->close)
|
|
close(p->fd);
|
|
}
|
|
|
|
// If url is a file:// URL, return the local filename, otherwise return NULL.
|
|
char *mp_file_url_to_filename(void *talloc_ctx, bstr url)
|
|
{
|
|
bstr proto = mp_split_proto(url, &url);
|
|
if (bstrcasecmp0(proto, "file") != 0)
|
|
return NULL;
|
|
char *filename = bstrto0(talloc_ctx, url);
|
|
mp_url_unescape_inplace(filename);
|
|
#if HAVE_DOS_PATHS
|
|
// extract '/' from '/x:/path'
|
|
if (filename[0] == '/' && filename[1] && filename[2] == ':')
|
|
memmove(filename, filename + 1, strlen(filename)); // including \0
|
|
#endif
|
|
return filename;
|
|
}
|
|
|
|
// Return talloc_strdup's filesystem path if local, otherwise NULL.
|
|
// Unlike mp_file_url_to_filename(), doesn't return NULL if already local.
|
|
char *mp_file_get_path(void *talloc_ctx, bstr url)
|
|
{
|
|
if (mp_split_proto(url, &(bstr){0}).len) {
|
|
return mp_file_url_to_filename(talloc_ctx, url);
|
|
} else {
|
|
return bstrto0(talloc_ctx, url);
|
|
}
|
|
}
|
|
|
|
#if HAVE_BSD_FSTATFS
|
|
static bool check_stream_network(int fd)
|
|
{
|
|
struct statfs fs;
|
|
const char *stypes[] = { "afpfs", "nfs", "smbfs", "webdav", "osxfusefs",
|
|
"fuse", "fusefs.sshfs", NULL };
|
|
if (fstatfs(fd, &fs) == 0)
|
|
for (int i=0; stypes[i]; i++)
|
|
if (strcmp(stypes[i], fs.f_fstypename) == 0)
|
|
return true;
|
|
return false;
|
|
|
|
}
|
|
#elif HAVE_LINUX_FSTATFS
|
|
static bool check_stream_network(int fd)
|
|
{
|
|
struct statfs fs;
|
|
const uint32_t stypes[] = {
|
|
0x5346414F /*AFS*/, 0x61756673 /*AUFS*/, 0x00C36400 /*CEPH*/,
|
|
0xFF534D42 /*CIFS*/, 0x73757245 /*CODA*/, 0x19830326 /*FHGFS*/,
|
|
0x65735546 /*FUSEBLK*/,0x65735543 /*FUSECTL*/,0x1161970 /*GFS*/,
|
|
0x47504653 /*GPFS*/, 0x6B414653 /*KAFS*/, 0x0BD00BD0 /*LUSTRE*/,
|
|
0x564C /*NCP*/, 0x6969 /*NFS*/, 0x6E667364 /*NFSD*/,
|
|
0xAAD7AAEA /*PANFS*/, 0x50495045 /*PIPEFS*/, 0x517B /*SMB*/,
|
|
0xBEEFDEAD /*SNFS*/, 0xBACBACBC /*VMHGFS*/, 0x7461636f /*OCFS2*/,
|
|
0xFE534D42 /*SMB2*/, 0x61636673 /*ACFS*/, 0x013111A8 /*IBRIX*/,
|
|
0
|
|
};
|
|
if (fstatfs(fd, &fs) == 0) {
|
|
for (int i=0; stypes[i]; i++) {
|
|
if (stypes[i] == fs.f_type)
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
|
|
}
|
|
#elif defined(_WIN32)
|
|
static bool check_stream_network(int fd)
|
|
{
|
|
NTSTATUS (NTAPI *pNtQueryVolumeInformationFile)(HANDLE,
|
|
PIO_STATUS_BLOCK, PVOID, ULONG, FS_INFORMATION_CLASS) = NULL;
|
|
|
|
// NtQueryVolumeInformationFile is an internal Windows function. It has
|
|
// been present since Windows XP, however this code should fail gracefully
|
|
// if it's removed from a future version of Windows.
|
|
HMODULE ntdll = GetModuleHandleW(L"ntdll.dll");
|
|
pNtQueryVolumeInformationFile = (NTSTATUS (NTAPI*)(HANDLE,
|
|
PIO_STATUS_BLOCK, PVOID, ULONG, FS_INFORMATION_CLASS))
|
|
GetProcAddress(ntdll, "NtQueryVolumeInformationFile");
|
|
|
|
if (!pNtQueryVolumeInformationFile)
|
|
return false;
|
|
|
|
HANDLE h = (HANDLE)_get_osfhandle(fd);
|
|
if (h == INVALID_HANDLE_VALUE)
|
|
return false;
|
|
|
|
FILE_FS_DEVICE_INFORMATION info = { 0 };
|
|
IO_STATUS_BLOCK io;
|
|
NTSTATUS status = pNtQueryVolumeInformationFile(h, &io, &info,
|
|
sizeof(info), FileFsDeviceInformation);
|
|
if (!NT_SUCCESS(status))
|
|
return false;
|
|
|
|
return info.DeviceType == FILE_DEVICE_NETWORK_FILE_SYSTEM ||
|
|
(info.Characteristics & FILE_REMOTE_DEVICE);
|
|
}
|
|
#else
|
|
static bool check_stream_network(int fd)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
static int open_f(stream_t *stream)
|
|
{
|
|
struct priv *p = talloc_ptrtype(stream, p);
|
|
*p = (struct priv) {
|
|
.fd = -1
|
|
};
|
|
stream->priv = p;
|
|
stream->is_local_file = true;
|
|
|
|
bool write = stream->mode == STREAM_WRITE;
|
|
int m = O_CLOEXEC | (write ? O_RDWR | O_CREAT | O_TRUNC : O_RDONLY);
|
|
|
|
char *filename = mp_file_url_to_filename(stream, bstr0(stream->url));
|
|
if (filename) {
|
|
stream->path = filename;
|
|
} else {
|
|
filename = stream->path;
|
|
}
|
|
|
|
bool is_fdclose = strncmp(stream->url, "fdclose://", 10) == 0;
|
|
if (strncmp(stream->url, "fd://", 5) == 0 || is_fdclose) {
|
|
char *begin = strstr(stream->url, "://") + 3, *end = NULL;
|
|
p->fd = strtol(begin, &end, 0);
|
|
if (!end || end == begin || end[0]) {
|
|
MP_ERR(stream, "Invalid FD: %s\n", stream->url);
|
|
return STREAM_ERROR;
|
|
}
|
|
if (is_fdclose)
|
|
p->close = true;
|
|
} else if (!strcmp(filename, "-")) {
|
|
if (!write) {
|
|
MP_INFO(stream, "Reading from stdin...\n");
|
|
p->fd = 0;
|
|
} else {
|
|
MP_INFO(stream, "Writing to stdout...\n");
|
|
p->fd = 1;
|
|
}
|
|
} else {
|
|
if (bstr_startswith0(bstr0(stream->url), "appending://"))
|
|
p->appending = true;
|
|
|
|
mode_t openmode = S_IRUSR | S_IWUSR;
|
|
#ifndef __MINGW32__
|
|
openmode |= S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
|
|
if (!write)
|
|
m |= O_NONBLOCK;
|
|
#endif
|
|
p->fd = open(filename, m | O_BINARY, openmode);
|
|
if (p->fd < 0) {
|
|
MP_ERR(stream, "Cannot open file '%s': %s\n",
|
|
filename, mp_strerror(errno));
|
|
return STREAM_ERROR;
|
|
}
|
|
p->close = true;
|
|
}
|
|
|
|
struct stat st;
|
|
if (fstat(p->fd, &st) == 0) {
|
|
if (S_ISDIR(st.st_mode)) {
|
|
stream->is_directory = true;
|
|
stream->allow_caching = false;
|
|
MP_INFO(stream, "This is a directory - adding to playlist.\n");
|
|
} else if (S_ISREG(st.st_mode)) {
|
|
p->regular_file = true;
|
|
#ifndef __MINGW32__
|
|
// O_NONBLOCK has weird semantics on file locks; remove it.
|
|
int val = fcntl(p->fd, F_GETFL) & ~(unsigned)O_NONBLOCK;
|
|
fcntl(p->fd, F_SETFL, val);
|
|
#endif
|
|
} else {
|
|
p->use_poll = true;
|
|
}
|
|
}
|
|
|
|
#ifdef __MINGW32__
|
|
setmode(p->fd, O_BINARY);
|
|
#endif
|
|
|
|
off_t len = lseek(p->fd, 0, SEEK_END);
|
|
lseek(p->fd, 0, SEEK_SET);
|
|
if (len != (off_t)-1) {
|
|
stream->seek = seek;
|
|
stream->seekable = true;
|
|
}
|
|
|
|
stream->fast_skip = true;
|
|
stream->fill_buffer = fill_buffer;
|
|
stream->write_buffer = write_buffer;
|
|
stream->control = control;
|
|
stream->read_chunk = 64 * 1024;
|
|
stream->close = s_close;
|
|
|
|
if (check_stream_network(p->fd))
|
|
stream->streaming = true;
|
|
|
|
p->orig_size = get_size(stream);
|
|
|
|
return STREAM_OK;
|
|
}
|
|
|
|
const stream_info_t stream_info_file = {
|
|
.name = "file",
|
|
.open = open_f,
|
|
.protocols = (const char*const[]){ "file", "", "fd", "fdclose",
|
|
"appending", NULL },
|
|
.can_write = true,
|
|
.is_safe = true,
|
|
};
|