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[core/windows] Improve shell quoting and tests (#9802)

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Authored by: Grub4K
This commit is contained in:
Simon Sawicki 2024-04-27 10:37:26 +02:00 committed by GitHub
parent 89f535e265
commit 64766459e3
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GPG key ID: B5690EEEBB952194
2 changed files with 33 additions and 22 deletions
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38
test/test_utils.py
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@ -2059,7 +2059,22 @@ Line 1
assert extract_basic_auth('http://user:pass@foo.bar') == ('http://foo.bar', 'Basic dXNlcjpwYXNz')
@unittest.skipUnless(compat_os_name == 'nt', 'Only relevant on Windows')
def test_Popen_windows_escaping(self):
def test_windows_escaping(self):
tests = [
'test"&',
'%CMDCMDLINE:~-1%&',
'a\nb',
'"',
'\\',
'!',
'^!',
'a \\ b',
'a \\" b',
'a \\ b\\',
# We replace \r with \n
('a\r\ra', 'a\n\na'),
]
def run_shell(args):
stdout, stderr, error = Popen.run(
args, text=True, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
@ -2067,15 +2082,18 @@ Line 1
assert not error
return stdout
# Test escaping
assert run_shell(['echo', 'test"&']) == '"test""&"\n'
assert run_shell(['echo', '%CMDCMDLINE:~-1%&']) == '"%CMDCMDLINE:~-1%&"\n'
assert run_shell(['echo', 'a\nb']) == '"a"\n"b"\n'
assert run_shell(['echo', '"']) == '""""\n'
assert run_shell(['echo', '\\']) == '\\\n'
# Test if delayed expansion is disabled
assert run_shell(['echo', '^!']) == '"^!"\n'
assert run_shell('echo "^!"') == '"^!"\n'
for argument in tests:
if isinstance(argument, str):
expected = argument
else:
argument, expected = argument
args = [sys.executable, '-c', 'import sys; print(end=sys.argv[1])', argument, 'end']
assert run_shell(args) == expected
escaped = shell_quote(argument, shell=True)
args = f'{sys.executable} -c "import sys; print(end=sys.argv[1])" {escaped} end'
assert run_shell(args) == expected
if __name__ == '__main__':

17
yt_dlp/utils/_utils.py
View file

@ -1638,16 +1638,14 @@ def get_filesystem_encoding():
return encoding if encoding is not None else 'utf-8'
_WINDOWS_QUOTE_TRANS = str.maketrans({'"': '\\"', '\\': '\\\\'})
_WINDOWS_QUOTE_TRANS = str.maketrans({'"': R'\"'})
_CMD_QUOTE_TRANS = str.maketrans({
# Keep quotes balanced by replacing them with `""` instead of `\\"`
'"': '""',
# Requires a variable `=` containing `"^\n\n"` (set in `utils.Popen`)
# These require an env-variable `=` containing `"^\n\n"` (set in `utils.Popen`)
# `=` should be unique since variables containing `=` cannot be set using cmd
'\n': '%=%',
# While we are only required to escape backslashes immediately before quotes,
# we instead escape all of 'em anyways to be consistent
'\\': '\\\\',
'\r': '%=%',
# Use zero length variable replacement so `%` doesn't get expanded
# `cd` is always set as long as extensions are enabled (`/E:ON` in `utils.Popen`)
'%': '%%cd:~,%',
@ -1656,19 +1654,14 @@ _CMD_QUOTE_TRANS = str.maketrans({
def shell_quote(args, *, shell=False):
args = list(variadic(args))
if any(isinstance(item, bytes) for item in args):
deprecation_warning('Passing bytes to utils.shell_quote is deprecated')
encoding = get_filesystem_encoding()
for index, item in enumerate(args):
if isinstance(item, bytes):
args[index] = item.decode(encoding)
if compat_os_name != 'nt':
return shlex.join(args)
trans = _CMD_QUOTE_TRANS if shell else _WINDOWS_QUOTE_TRANS
return ' '.join(
s if re.fullmatch(r'[\w#$*\-+./:?@\\]+', s, re.ASCII) else s.translate(trans).join('""')
s if re.fullmatch(r'[\w#$*\-+./:?@\\]+', s, re.ASCII)
else re.sub(r'(\\+)("|$)', r'\1\1\2', s).translate(trans).join('""')
for s in args)