mirror of
https://github.com/systemd/systemd.git
synced 2024-11-23 18:23:32 +08:00
708daf42d8
This is useful to use "f" or "w" to write arbitrary binary files to disk, or files with newlines and similar (for example to provision SSH host keys and similar).
211 lines
7.7 KiB
Python
Executable File
211 lines
7.7 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# SPDX-License-Identifier: LGPL-2.1-or-later
|
|
#
|
|
# systemd 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.
|
|
|
|
import os
|
|
import sys
|
|
import socket
|
|
import subprocess
|
|
import tempfile
|
|
import pwd
|
|
import grp
|
|
|
|
try:
|
|
from systemd import id128
|
|
except ImportError:
|
|
id128 = None
|
|
|
|
EX_DATAERR = 65 # from sysexits.h
|
|
EXIT_TEST_SKIP = 77
|
|
|
|
try:
|
|
subprocess.run
|
|
except AttributeError:
|
|
sys.exit(EXIT_TEST_SKIP)
|
|
|
|
exe_with_args = sys.argv[1:]
|
|
|
|
def test_line(line, *, user, returncode=EX_DATAERR, extra={}):
|
|
args = ['--user'] if user else []
|
|
print('Running {} on {!r}'.format(' '.join(exe_with_args + args), line))
|
|
c = subprocess.run(exe_with_args + ['--create', '-'] + args,
|
|
input=line, stdout=subprocess.PIPE, universal_newlines=True,
|
|
**extra)
|
|
assert c.returncode == returncode, c
|
|
|
|
def test_invalids(*, user):
|
|
test_line('asdfa', user=user)
|
|
test_line('f "open quote', user=user)
|
|
test_line('f closed quote""', user=user)
|
|
test_line('Y /unknown/letter', user=user)
|
|
test_line('w non/absolute/path', user=user)
|
|
test_line('s', user=user) # s is for short
|
|
test_line('f!! /too/many/bangs', user=user)
|
|
test_line('f++ /too/many/plusses', user=user)
|
|
test_line('f+!+ /too/many/plusses', user=user)
|
|
test_line('f!+! /too/many/bangs', user=user)
|
|
test_line('f== /too/many/equals', user=user)
|
|
test_line('w /unresolved/argument - - - - "%Y"', user=user)
|
|
test_line('w /unresolved/argument/sandwich - - - - "%v%Y%v"', user=user)
|
|
test_line('w /unresolved/filename/%Y - - - - "whatever"', user=user)
|
|
test_line('w /unresolved/filename/sandwich/%v%Y%v - - - - "whatever"', user=user)
|
|
test_line('w - - - - - "no file specified"', user=user)
|
|
test_line('C - - - - - "no file specified"', user=user)
|
|
test_line('C non/absolute/path - - - - -', user=user)
|
|
test_line('b - - - - - -', user=user)
|
|
test_line('b 1234 - - - - -', user=user)
|
|
test_line('c - - - - - -', user=user)
|
|
test_line('c 1234 - - - - -', user=user)
|
|
test_line('t - - -', user=user)
|
|
test_line('T - - -', user=user)
|
|
test_line('a - - -', user=user)
|
|
test_line('A - - -', user=user)
|
|
test_line('h - - -', user=user)
|
|
test_line('H - - -', user=user)
|
|
|
|
def test_uninitialized_t():
|
|
if os.getuid() == 0:
|
|
return
|
|
|
|
test_line('w /foo - - - - "specifier for --user %t"',
|
|
user=True, returncode=0, extra={'env':{}})
|
|
|
|
def test_content(line, expected, *, user, extra={}, subpath='/arg', path_cb=None):
|
|
d = tempfile.TemporaryDirectory(prefix='test-systemd-tmpfiles.')
|
|
if path_cb is not None:
|
|
path_cb(d.name, subpath)
|
|
arg = d.name + subpath
|
|
spec = line.format(arg)
|
|
test_line(spec, user=user, returncode=0, extra=extra)
|
|
content = open(arg).read()
|
|
print('expect: {!r}\nactual: {!r}'.format(expected, content))
|
|
assert content == expected
|
|
|
|
def test_valid_specifiers(*, user):
|
|
test_content('f {} - - - - two words', 'two words', user=user)
|
|
if id128:
|
|
try:
|
|
test_content('f {} - - - - %m', '{}'.format(id128.get_machine().hex), user=user)
|
|
except AssertionError as e:
|
|
print(e)
|
|
print('/etc/machine-id: {!r}'.format(open('/etc/machine-id').read()))
|
|
print('/proc/cmdline: {!r}'.format(open('/proc/cmdline').read()))
|
|
print('skipping')
|
|
test_content('f {} - - - - %b', '{}'.format(id128.get_boot().hex), user=user)
|
|
test_content('f {} - - - - %H', '{}'.format(socket.gethostname()), user=user)
|
|
test_content('f {} - - - - %v', '{}'.format(os.uname().release), user=user)
|
|
test_content('f {} - - - - %U', '{}'.format(os.getuid() if user else 0), user=user)
|
|
test_content('f {} - - - - %G', '{}'.format(os.getgid() if user else 0), user=user)
|
|
|
|
puser = pwd.getpwuid(os.getuid() if user else 0)
|
|
test_content('f {} - - - - %u', '{}'.format(puser.pw_name), user=user)
|
|
|
|
pgroup = grp.getgrgid(os.getgid() if user else 0)
|
|
test_content('f {} - - - - %g', '{}'.format(pgroup.gr_name), user=user)
|
|
|
|
# Note that %h is the only specifier in which we look the environment,
|
|
# because we check $HOME. Should we even be doing that?
|
|
home = os.path.expanduser("~")
|
|
test_content('f {} - - - - %h', '{}'.format(home), user=user)
|
|
|
|
xdg_runtime_dir = os.getenv('XDG_RUNTIME_DIR')
|
|
if xdg_runtime_dir is not None or not user:
|
|
test_content('f {} - - - - %t',
|
|
xdg_runtime_dir if user else '/run',
|
|
user=user)
|
|
|
|
xdg_config_home = os.getenv('XDG_CONFIG_HOME')
|
|
if xdg_config_home is not None or not user:
|
|
test_content('f {} - - - - %S',
|
|
xdg_config_home if user else '/var/lib',
|
|
user=user)
|
|
|
|
xdg_cache_home = os.getenv('XDG_CACHE_HOME')
|
|
if xdg_cache_home is not None or not user:
|
|
test_content('f {} - - - - %C',
|
|
xdg_cache_home if user else '/var/cache',
|
|
user=user)
|
|
|
|
if xdg_config_home is not None or not user:
|
|
test_content('f {} - - - - %L',
|
|
xdg_config_home + '/log' if user else '/var/log',
|
|
user=user)
|
|
|
|
test_content('f {} - - - - %%', '%', user=user)
|
|
|
|
def mkfifo(parent, subpath):
|
|
os.makedirs(parent, mode=0o755, exist_ok=True)
|
|
first_component = subpath.split('/')[1]
|
|
path = parent + '/' + first_component
|
|
print('path: {}'.format(path))
|
|
os.mkfifo(path)
|
|
|
|
def mkdir(parent, subpath):
|
|
first_component = subpath.split('/')[1]
|
|
path = parent + '/' + first_component
|
|
os.makedirs(path, mode=0o755, exist_ok=True)
|
|
os.symlink(path, path + '/self', target_is_directory=True)
|
|
|
|
def symlink(parent, subpath):
|
|
link_path = parent + '/link-target'
|
|
os.makedirs(parent, mode=0o755, exist_ok=True)
|
|
with open(link_path, 'wb') as f:
|
|
f.write(b'target')
|
|
first_component = subpath.split('/')[1]
|
|
path = parent + '/' + first_component
|
|
os.symlink(link_path, path, target_is_directory=True)
|
|
|
|
def file(parent, subpath):
|
|
content = 'file-' + subpath.split('/')[1]
|
|
path = parent + subpath
|
|
os.makedirs(os.path.dirname(path), mode=0o755, exist_ok=True)
|
|
with open(path, 'wb') as f:
|
|
f.write(content.encode())
|
|
|
|
def valid_symlink(parent, subpath):
|
|
target = 'link-target'
|
|
link_path = parent + target
|
|
os.makedirs(link_path, mode=0o755, exist_ok=True)
|
|
first_component = subpath.split('/')[1]
|
|
path = parent + '/' + first_component
|
|
os.symlink(target, path, target_is_directory=True)
|
|
|
|
def test_hard_cleanup(*, user):
|
|
type_cbs = [None, file, mkdir, symlink]
|
|
if 'mkfifo' in dir(os):
|
|
type_cbs.append(mkfifo)
|
|
|
|
for type_cb in type_cbs:
|
|
for subpath in ['/shallow', '/deep/1/2']:
|
|
label = '{}-{}'.format('None' if type_cb is None else type_cb.__name__, subpath.split('/')[1])
|
|
test_content('f= {} - - - - ' + label, label, user=user, subpath=subpath, path_cb=type_cb)
|
|
|
|
# Test the case that a valid symlink is in the path.
|
|
label = 'valid_symlink-deep'
|
|
test_content('f= {} - - - - ' + label, label, user=user, subpath='/deep/1/2', path_cb=valid_symlink)
|
|
|
|
def test_base64():
|
|
test_line('f~ /tmp/base64-test - - - - UGlmZgpQYWZmClB1ZmYgCg==', user=False, returncode=0)
|
|
|
|
with open("/tmp/base64-test", mode='r') as f:
|
|
d = f.read()
|
|
|
|
assert d == "Piff\nPaff\nPuff \n"
|
|
|
|
if __name__ == '__main__':
|
|
test_invalids(user=False)
|
|
test_invalids(user=True)
|
|
test_uninitialized_t()
|
|
|
|
test_valid_specifiers(user=False)
|
|
test_valid_specifiers(user=True)
|
|
|
|
test_hard_cleanup(user=False)
|
|
test_hard_cleanup(user=True)
|
|
|
|
test_base64()
|