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# encoding: utf-8
# api: streamtuner2
# title: win32/subprocess
# description: Utilizes subprocess spawning or win32 API instead of os.system
# version: 0.4
# version: 0.5
# depends: streamtuner2 > 2.2.0, python >= 2.7
# priority: optional
# config:
# { name: cmd_spawn, type: select, select: "popen|shell|call|execv|spawnv|pywin32|win32api|system", value: popen, description: Spawn method }
# { name: cmd_flags, type: select, select: "none|nowait|detached|nowaito|all|sw_hide|sw_maximize|sw_minimize|sw_show", value: nowait, description: Process creation flags (win32) }
# { name: cmd_flags, type: select, select: "none|nowait|detached|nowaito|all|sw_hide|sw_maximize|sw_minimize|sw_show", value: detached, description: Process creation flags (win32) }
# { name: cmd_quote, type: bool, value: 0, description: Simple quoting override (for Windows) }
# { name: cmd_split, type: select, select: kxr|shlex|nonposix, value: kxr, description: Command string splitting variant }
# type: handler
# category: io
# license: MITL, CC-BY-SA-3.0
#
# Overrides the action.run method with subprocess.Popen() and a bit
# cmdline parsing. Which mostly makes sense on Windows to avoid some
# `start` bugs, such as "http://.." arguments getting misinterpreted.
# Also works on Linux, though with few advantages and some gotchas.
#
# +------------------+-----+------+---------+-------+----------------------+
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# or features obviously. Unless you wrap player commands with `sh -c …`
#
import subprocess
import os
import shlex
import pipes
import re
from config import *
from channels import FeaturePlugin
import action
try:
import win32process
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"sw_show": 5, # https://msdn.microsoft.com/en-us/library/windows/desktop/ms633548(v=vs.85).aspx
}
# swap out action.run()
def init2(self, parent, *k, **kw):
action.run = self.run
if conf.windows:
if conf.windows or conf.cmd_split:
action.quote = self.quote
# override for action.quote
def quote(self, ins):
# use default for string-style exec methods / or array arg
if conf.cmd_spawn in ("system", "default", "win32api") or type(ins) is list:
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# blacklist
if re.search("streamripper|cmd\.exe", cmd):
return orig_run(cmd)
# split args
if conf.cmd_split in ("kxr", "cmdline_split", "multi"):
args = self.cmdline_split(cmd, platform=(not conf.windows))
else:
args = shlex.split(cmd)
args = shlex.split(cmd, posix=(cmd_split=="shlex"))
# undo win32 quoting damage
if conf.windows and re.search('\^', cmd): #and action.quote != self.quote:
args = [re.sub(r'\^(?=[()<>"&^])', '', s) for s in args]
# flags
if conf.windows and conf.cmd_flags in self.flagmap:
flags = self.flagmap[conf.cmd_flags]
else:
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win32api.WinExec(cmd, flags) # should only use SW_* flags
)
# fallback
else:
return orig_run(cmd)
# shlex.split for Windows
def cmdline_split(self, s, platform='this'):
"""Multi-platform variant of shlex.split() for command-line splitting.
For use with subprocess, for argv injection etc. Using fast REGEX.
platform: 'this' = auto from current platform;
1 = POSIX;
0 = Windows/CMD
(other values reserved)
author: kxr / Philip Jenvey
license: CC-BB-SA-3.0
src: https://stackoverflow.com/questions/33560364/python-windows-parsing-command-lines-with-shlex
"""
if platform == 'this':
platform = (sys.platform != 'win32')
if platform == 1:
RE_CMD_LEX = r'''"((?:\\["\\]|[^"])*)"|'([^']*)'|(\\.)|(&&?|\|\|?|\d?\>|[<])|([^\s'"\\&|<>]+)|(\s+)|(.)'''
elif platform == 0:
RE_CMD_LEX = r'''"((?:""|\\["\\]|[^"])*)"?()|(\\\\(?=\\*")|\\")|(&&?|\|\|?|\d?>|[<])|([^\s"&|<>]+)|(\s+)|(.)'''
else:
raise AssertionError('unkown platform %r' % platform)
args = []
accu = None # collects pieces of one arg
for qs, qss, esc, pipe, word, white, fail in re.findall(RE_CMD_LEX, s):
if word:
pass # most frequent
elif esc:
word = esc[1]
elif white or pipe:
if accu is not None:
args.append(accu)
if pipe:
args.append(pipe)
accu = None
continue
elif fail:
raise ValueError("invalid or incomplete shell string")
elif qs:
word = qs.replace('\\"', '"').replace('\\\\', '\\')
if platform == 0:
word = word.replace('""', '"')
else:
word = qss # may be even empty; must be last
accu = (accu or '') + word
if accu is not None:
args.append(accu)
return args
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