mirror of https://github.com/mpv-player/mpv
94 lines
3.2 KiB
Python
Executable File
94 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
"""
|
|
This script emulates "unique application" functionality on Linux. When starting
|
|
playback with this script, it will try to reuse an already running instance of
|
|
mpv (but only if that was started with umpv). Other mpv instances (not started
|
|
by umpv) are ignored, and the script doesn't know about them.
|
|
|
|
This only takes filenames as arguments. Custom options can't be used; the script
|
|
interprets them as filenames. If mpv is already running, the files passed to
|
|
umpv are appended to mpv's internal playlist. If a file does not exist or is
|
|
otherwise not playable, mpv will skip the playlist entry when attempting to
|
|
play it (from the GUI perspective, it's silently ignored).
|
|
|
|
If mpv isn't running yet, this script will start mpv and let it control the
|
|
current terminal. It will not write output to stdout/stderr, because this
|
|
will typically just fill ~/.xsession-errors with garbage.
|
|
|
|
mpv will terminate if there are no more files to play, and running the umpv
|
|
script after that will start a new mpv instance.
|
|
|
|
Note that you can control the mpv instance by writing to the command fifo:
|
|
|
|
echo "cycle fullscreen" > /tmp/umpv-fifo-*
|
|
|
|
Warning:
|
|
|
|
The script attempts to make sure the FIFO is safely created (i.e. not world-
|
|
writable), and checks that it's really a FIFO. This is important for security,
|
|
because the FIFO allows anyone with write access to run arbitrary commands
|
|
in mpv's context using the "run" input command. If you are worried about
|
|
security, you should verify that the code handles these concerns correctly.
|
|
"""
|
|
|
|
import sys
|
|
import os
|
|
import errno
|
|
import subprocess
|
|
import fcntl
|
|
import stat
|
|
|
|
if len(sys.argv) < 2:
|
|
print("error: needs at least one file as argument.")
|
|
sys.exit(1)
|
|
files = sys.argv[1:]
|
|
# make them absolute; also makes them safe against interpretation as options
|
|
files = [os.path.abspath(f) for f in files]
|
|
|
|
FIFO = "/tmp/umpv-fifo-" + os.getenv("USER")
|
|
|
|
fifo_fd = -1
|
|
try:
|
|
fifo_fd = os.open(FIFO, os.O_NONBLOCK | os.O_WRONLY)
|
|
except OSError as e:
|
|
if e.errno == errno.ENXIO:
|
|
pass # pipe has no writer
|
|
elif e.errno == errno.ENOENT:
|
|
pass # doesn't exist
|
|
else:
|
|
raise e
|
|
|
|
if fifo_fd >= 0:
|
|
st = os.fstat(fifo_fd)
|
|
if (((st.st_mode & (stat.S_IRWXG | stat.S_IRWXO)) != 0) or
|
|
(not stat.S_ISFIFO(st.st_mode)) or
|
|
(st.st_uid != os.getuid())):
|
|
print("error: command FIFO is not a FIFO or has bogus permissions")
|
|
sys.exit(1)
|
|
|
|
if fifo_fd >= 0:
|
|
# Unhandled race condition: what if mpv is terminating right now?
|
|
fcntl.fcntl(fifo_fd, fcntl.F_SETFL, 0) # set blocking mode
|
|
fifo = os.fdopen(fifo_fd, "w")
|
|
for f in files:
|
|
# escape: \ \n "
|
|
f = f.replace("\\", "\\\\").replace("\"", "\\\"").replace("\n", "\\n")
|
|
f = "\"" + f + "\""
|
|
fifo.write("raw loadfile " + f + " append\n")
|
|
else:
|
|
# Recreate pipe if it doesn't already exist.
|
|
# Also makes sure it's safe, and no other user can create a bogus pipe
|
|
# that breaks security.
|
|
try:
|
|
os.unlink(FIFO)
|
|
except OSError as e:
|
|
if e.errno == errno.ENOENT:
|
|
pass
|
|
else:
|
|
raise e
|
|
os.mkfifo(FIFO, 0600)
|
|
|
|
subprocess.check_call(["mpv", "--really-quiet", "--force-window",
|
|
"--input-file=" + FIFO, "--"] + files)
|