#!/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 from pathlib import Path 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:] temp_dir = tempfile.TemporaryDirectory(prefix='test-systemd-tmpfiles.') 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':{'HOME': os.getenv('HOME')}}) def test_content(line, expected, *, user, extra={}, subpath='/arg', path_cb=None): d = tempfile.TemporaryDirectory(prefix='test-content.', dir=temp_dir.name) 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 and os.path.isfile('/etc/machine-id'): 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) try: puser = pwd.getpwuid(os.getuid() if user else 0) except KeyError: puser = None if puser: test_content('f {} - - - - %u', '{}'.format(puser.pw_name), user=user) try: pgroup = grp.getgrgid(os.getgid() if user else 0) except KeyError: pgroup = None if pgroup: 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_state_home = os.getenv('XDG_STATE_HOME') if xdg_state_home is None and user: xdg_state_home = os.path.join(home, ".local/state") test_content('f {} - - - - %S', xdg_state_home if user else '/var/lib', user=user) xdg_cache_home = os.getenv('XDG_CACHE_HOME') if xdg_cache_home is None and user: xdg_cache_home = os.path.join(home, ".cache") test_content('f {} - - - - %C', xdg_cache_home if user else '/var/cache', user=user) test_content('f {} - - - - %L', os.path.join(xdg_state_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_content('f~ {} - - - - UGlmZgpQYWZmClB1ZmYgCg==', "Piff\nPaff\nPuff \n", user=False) def test_conditionalized_execute_bit(): c = subprocess.run(exe_with_args + ['--version', '|', 'grep', '-F', '+ACL'], shell=True, stdout=subprocess.DEVNULL) if c.returncode != 0: return 0 d = tempfile.TemporaryDirectory(prefix='test-acl.', dir=temp_dir.name) temp = Path(d.name) / "cond_exec" temp.touch() temp.chmod(0o644) test_line(f"a {temp} - - - - u:root:Xwr", user=False, returncode=0) c = subprocess.run(["getfacl", "-Ec", temp], stdout=subprocess.PIPE, check=True, text=True) assert "user:root:rw-" in c.stdout temp.chmod(0o755) test_line(f"a+ {temp} - - - - u:root:Xwr,g:root:rX", user=False, returncode=0) c = subprocess.run(["getfacl", "-Ec", temp], stdout=subprocess.PIPE, check=True, text=True) assert "user:root:rwx" in c.stdout and "group:root:r-x" in c.stdout 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() test_conditionalized_execute_bit()