mirror of
https://github.com/mpv-player/mpv
synced 2024-10-30 04:46:41 +01:00
d191de8564
stream_dvd.c includes a pseudo-protocol that recognizes .IFO files, and plays them using libdvdread. This was relatively lazy, and could perhaps easily trigger with files that just had the .ifo extension. Make the checks stricter, and even probe the file header. Apparently the first bytes in an .ifo file are always "DVDVIDEO-VTS", so check for this. Refuse to load the main "video_ts.ifo". The plan is to use stream_dvdnav for it. This also removes at least 1 memory leak.
297 lines
8.0 KiB
C
297 lines
8.0 KiB
C
/*
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* This file is part of MPlayer.
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*
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* Original authors: Albeu, probably Arpi
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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 <unistd.h>
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#include <errno.h>
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#include "osdep/io.h"
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#include "common/msg.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 <winternl.h>
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#include <io.h>
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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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};
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static int fill_buffer(stream_t *s, char *buffer, int max_len)
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{
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struct priv *p = s->priv;
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int r = read(p->fd, buffer, max_len);
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return (r <= 0) ? -1 : r;
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}
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static int write_buffer(stream_t *s, char *buffer, int len)
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{
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struct priv *p = s->priv;
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int r;
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int wr = 0;
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while (wr < len) {
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r = write(p->fd, buffer, len);
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if (r <= 0)
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return -1;
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wr += r;
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buffer += r;
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}
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return 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 int control(stream_t *s, int cmd, void *arg)
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{
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struct priv *p = s->priv;
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switch (cmd) {
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case STREAM_CTRL_GET_SIZE: {
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off_t size = lseek(p->fd, 0, SEEK_END);
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lseek(p->fd, s->pos, SEEK_SET);
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if (size != (off_t)-1) {
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*(int64_t *)arg = size;
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return 1;
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}
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break;
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}
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}
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return STREAM_UNSUPPORTED;
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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 && p->fd >= 0)
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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(stream_t *stream)
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{
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struct statfs fs;
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const char *stypes[] = { "afpfs", "nfs", "smbfs", "webdav", NULL };
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struct priv *priv = stream->priv;
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if (fstatfs(priv->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(stream_t *stream)
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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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0
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};
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struct priv *priv = stream->priv;
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if (fstatfs(priv->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(stream_t *stream)
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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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struct priv *priv = stream->priv;
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HANDLE h = (HANDLE)_get_osfhandle(priv->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(stream_t *stream)
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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)
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{
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int fd;
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struct priv *priv = talloc_ptrtype(stream, priv);
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*priv = (struct priv) {
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.fd = -1
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};
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stream->priv = priv;
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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 = mp_file_url_to_filename(stream, bstr0(stream->url));
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if (filename) {
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stream->path = filename;
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} else {
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filename = stream->path;
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}
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if (!strcmp(filename, "-")) {
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if (!write) {
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MP_INFO(stream, "Reading from stdin...\n");
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fd = 0;
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} else {
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MP_INFO(stream, "Writing to stdout...\n");
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fd = 1;
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}
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#ifdef __MINGW32__
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setmode(fd, O_BINARY);
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#endif
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priv->fd = fd;
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priv->close = false;
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} else {
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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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#endif
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fd = open(filename, m | O_BINARY, openmode);
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if (fd < 0) {
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MP_ERR(stream, "Cannot open file '%s': %s\n",
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filename, strerror(errno));
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return STREAM_ERROR;
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}
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struct stat st;
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if (fstat(fd, &st) == 0 && S_ISDIR(st.st_mode)) {
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MP_ERR(stream, "File is a directory: '%s'\n", filename);
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close(fd);
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return STREAM_ERROR;
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}
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priv->fd = fd;
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priv->close = true;
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}
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off_t len = lseek(fd, 0, SEEK_END);
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lseek(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->type = STREAMTYPE_FILE;
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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->control = control;
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stream->read_chunk = 64 * 1024;
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stream->close = s_close;
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if (check_stream_network(stream))
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stream->streaming = true;
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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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.open = open_f,
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.protocols = (const char*const[]){ "file", "", NULL },
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.can_write = true,
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.is_safe = true,
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};
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