diff options
| author | Christian Breunig <christian@breunig.cc> | 2023-07-14 22:18:36 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-07-14 22:18:36 +0200 |
| commit | d1ca536da448749dff557f13ecae97b124026e96 (patch) | |
| tree | 5b742885703c94f331ba0f5760e157c98c44c437 /python | |
| parent | 36ce4167538db89c9c3a822de1218faf7397c9bd (diff) | |
| download | vyos-1x-d1ca536da448749dff557f13ecae97b124026e96.tar.gz vyos-1x-d1ca536da448749dff557f13ecae97b124026e96.zip | |
T5195: vyos.util -> vyos.utils package refactoring (#2093)
* T5195: move run, cmd, call, rc_cmd helper to vyos.utils.process
* T5195: use read_file and write_file implementation from vyos.utils.file
Changed code automatically using:
find . -type f -not -path '*/\.*' -exec sed -i 's/^from vyos.util import read_file$/from vyos.utils.file import read_file/g' {} +
find . -type f -not -path '*/\.*' -exec sed -i 's/^from vyos.util import write_file$/from vyos.utils.file import write_file/g' {} +
* T5195: move chmod* helpers to vyos.utils.permission
* T5195: use colon_separated_to_dict from vyos.utils.dict
* T5195: move is_systemd_service_* to vyos.utils.process
* T5195: fix boot issues with missing imports
* T5195: move dict_search_* helpers to vyos.utils.dict
* T5195: move network helpers to vyos.utils.network
* T5195: move commit_* helpers to vyos.utils.commit
* T5195: move user I/O helpers to vyos.utils.io
Diffstat (limited to 'python')
37 files changed, 616 insertions, 820 deletions
diff --git a/python/vyos/accel_ppp.py b/python/vyos/accel_ppp.py index 0af311e57..0b4f8a9fe 100644 --- a/python/vyos/accel_ppp.py +++ b/python/vyos/accel_ppp.py @@ -18,7 +18,7 @@ import sys import vyos.opmode -from vyos.util import rc_cmd +from vyos.utils.process import rc_cmd def get_server_statistics(accel_statistics, pattern, sep=':') -> dict: diff --git a/python/vyos/authutils.py b/python/vyos/authutils.py index 66b5f4a74..a59858d72 100644 --- a/python/vyos/authutils.py +++ b/python/vyos/authutils.py @@ -15,7 +15,7 @@ import re -from vyos.util import cmd +from vyos.utils.process import cmd def make_password_hash(password): diff --git a/python/vyos/config_mgmt.py b/python/vyos/config_mgmt.py index e1870aa0a..4ddabd6c2 100644 --- a/python/vyos/config_mgmt.py +++ b/python/vyos/config_mgmt.py @@ -18,6 +18,7 @@ import re import sys import gzip import logging + from typing import Optional, Tuple, Union from filecmp import cmp from datetime import datetime @@ -29,7 +30,9 @@ from vyos.config import Config from vyos.configtree import ConfigTree, ConfigTreeError, show_diff from vyos.defaults import directories from vyos.version import get_full_version_data -from vyos.util import is_systemd_service_active, ask_yes_no, rc_cmd +from vyos.utils.io import ask_yes_no +from vyos.utils.process import is_systemd_service_active +from vyos.utils.process import rc_cmd SAVE_CONFIG = '/opt/vyatta/sbin/vyatta-save-config.pl' diff --git a/python/vyos/configdict.py b/python/vyos/configdict.py index 1205342df..2411a04c4 100644 --- a/python/vyos/configdict.py +++ b/python/vyos/configdict.py @@ -19,9 +19,9 @@ A library for retrieving value dicts from VyOS configs in a declarative fashion. import os import json -from vyos.util import dict_search +from vyos.utils.dict import dict_search from vyos.xml import defaults -from vyos.util import cmd +from vyos.utils.process import cmd def retrieve_config(path_hash, base_path, config): """ diff --git a/python/vyos/configdiff.py b/python/vyos/configdiff.py index ac86af09c..5d30e9b66 100644 --- a/python/vyos/configdiff.py +++ b/python/vyos/configdiff.py @@ -19,8 +19,9 @@ from vyos.config import Config from vyos.configtree import DiffTree from vyos.configdict import dict_merge from vyos.configdict import list_diff -from vyos.util import get_sub_dict, mangle_dict_keys -from vyos.util import dict_search_args +from vyos.utils.dict import get_sub_dict +from vyos.util import mangle_dict_keys +from vyos.utils.dict import dict_search_args from vyos.xml import defaults class ConfigDiffError(Exception): diff --git a/python/vyos/configquery.py b/python/vyos/configquery.py index 9260da568..71ad5b4f0 100644 --- a/python/vyos/configquery.py +++ b/python/vyos/configquery.py @@ -19,9 +19,10 @@ settings from op mode, and execution of arbitrary op mode commands. ''' import os -from subprocess import STDOUT -from vyos.util import popen +from vyos.utils.process import STDOUT +from vyos.utils.process import popen + from vyos.utils.boot import boot_configuration_complete from vyos.config import Config from vyos.configsource import ConfigSourceSession, ConfigSourceString diff --git a/python/vyos/configsession.py b/python/vyos/configsession.py index decb82437..e8918d577 100644 --- a/python/vyos/configsession.py +++ b/python/vyos/configsession.py @@ -17,7 +17,7 @@ import re import sys import subprocess -from vyos.util import is_systemd_service_running +from vyos.utils.process import is_systemd_service_running from vyos.utils.dict import dict_to_paths CLI_SHELL_API = '/bin/cli-shell-api' diff --git a/python/vyos/configverify.py b/python/vyos/configverify.py index 94dcdf4d9..5b94bd98b 100644 --- a/python/vyos/configverify.py +++ b/python/vyos/configverify.py @@ -22,8 +22,8 @@ # makes use of it! from vyos import ConfigError -from vyos.util import dict_search -from vyos.util import dict_search_recursive +from vyos.utils.dict import dict_search +from vyos.utils.dict import dict_search_recursive def verify_mtu(config): """ @@ -314,8 +314,6 @@ def verify_dhcpv6(config): recurring validation of DHCPv6 options which are mutually exclusive. """ if 'dhcpv6_options' in config: - from vyos.util import dict_search - if {'parameters_only', 'temporary'} <= set(config['dhcpv6_options']): raise ConfigError('DHCPv6 temporary and parameters-only options ' 'are mutually exclusive!') @@ -460,7 +458,7 @@ def verify_diffie_hellman_length(file, min_keysize): then or equal to min_keysize """ import os import re - from vyos.util import cmd + from vyos.utils.process import cmd try: keysize = str(min_keysize) diff --git a/python/vyos/ethtool.py b/python/vyos/ethtool.py index 9b7da89fa..ca3bcfc3d 100644 --- a/python/vyos/ethtool.py +++ b/python/vyos/ethtool.py @@ -16,7 +16,7 @@ import os import re -from vyos.util import popen +from vyos.utils.process import popen # These drivers do not support using ethtool to change the speed, duplex, or # flow control settings diff --git a/python/vyos/firewall.py b/python/vyos/firewall.py index 919032a41..2793b201c 100644 --- a/python/vyos/firewall.py +++ b/python/vyos/firewall.py @@ -1,6 +1,6 @@ #!/usr/bin/env python3 # -# Copyright (C) 2021-2022 VyOS maintainers and contributors +# Copyright (C) 2021-2023 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as @@ -28,11 +28,11 @@ from time import strftime from vyos.remote import download from vyos.template import is_ipv4 from vyos.template import render -from vyos.util import call -from vyos.util import cmd -from vyos.util import dict_search_args -from vyos.util import dict_search_recursive -from vyos.util import run +from vyos.utils.dict import dict_search_args +from vyos.utils.dict import dict_search_recursive +from vyos.utils.process import call +from vyos.utils.process import cmd +from vyos.utils.process import run # Domain Resolver @@ -45,7 +45,7 @@ def fqdn_config_parse(firewall): rule = path[3] # rule id suffix = path[4][0] # source/destination (1 char) set_name = f'{fw_name}_{rule}_{suffix}' - + if path[0] == 'name': firewall['ip_fqdn'][set_name] = domain elif path[0] == 'ipv6_name': diff --git a/python/vyos/frr.py b/python/vyos/frr.py index a84f183ef..58213d197 100644 --- a/python/vyos/frr.py +++ b/python/vyos/frr.py @@ -67,9 +67,13 @@ Apply the new configuration: import tempfile import re + from vyos import util -from vyos.util import chown -from vyos.util import cmd +from vyos.utils.permission import chown +from vyos.utils.process import cmd +from vyos.utils.process import popen +from vyos.utils.process import STDOUT + import logging from logging.handlers import SysLogHandler import os @@ -144,7 +148,7 @@ def get_configuration(daemon=None, marked=False): if daemon: cmd += f' -d {daemon}' - output, code = util.popen(cmd, stderr=util.STDOUT) + output, code = popen(cmd, stderr=STDOUT) if code: raise OSError(code, output) @@ -166,7 +170,7 @@ def mark_configuration(config): config: The configuration string to mark/test return: The marked configuration from FRR """ - output, code = util.popen(f"{path_vtysh} -m -f -", stderr=util.STDOUT, input=config) + output, code = popen(f"{path_vtysh} -m -f -", stderr=STDOUT, input=config) if code == 2: raise ConfigurationNotValid(str(output)) @@ -206,7 +210,7 @@ def reload_configuration(config, daemon=None): cmd += f' {f.name}' LOG.debug(f'reload_configuration: Executing command against frr-reload: "{cmd}"') - output, code = util.popen(cmd, stderr=util.STDOUT) + output, code = popen(cmd, stderr=STDOUT) f.close() for i, e in enumerate(output.split('\n')): LOG.debug(f'frr-reload output: {i:3} {e}') @@ -235,7 +239,7 @@ def execute(command): cmd = f"{path_vtysh} -c '{command}'" - output, code = util.popen(cmd, stderr=util.STDOUT) + output, code = popen(cmd, stderr=STDOUT) if code: raise OSError(code, output) @@ -267,7 +271,7 @@ def configure(lines, daemon=False): for x in lines: cmd += f" -c '{x}'" - output, code = util.popen(cmd, stderr=util.STDOUT) + output, code = popen(cmd, stderr=STDOUT) if code == 1: raise ConfigurationNotValid(f'Configuration FRR failed: {repr(output)}') elif code: diff --git a/python/vyos/ifconfig/bond.py b/python/vyos/ifconfig/bond.py index 0edd17055..e88f860be 100644 --- a/python/vyos/ifconfig/bond.py +++ b/python/vyos/ifconfig/bond.py @@ -16,8 +16,8 @@ import os from vyos.ifconfig.interface import Interface -from vyos.util import cmd -from vyos.util import dict_search +from vyos.utils.process import cmd +from vyos.utils.dict import dict_search from vyos.validate import assert_list from vyos.validate import assert_positive diff --git a/python/vyos/ifconfig/bridge.py b/python/vyos/ifconfig/bridge.py index aa818bc5f..b103b49d8 100644 --- a/python/vyos/ifconfig/bridge.py +++ b/python/vyos/ifconfig/bridge.py @@ -19,8 +19,8 @@ import json from vyos.ifconfig.interface import Interface from vyos.validate import assert_boolean from vyos.validate import assert_positive -from vyos.util import cmd -from vyos.util import dict_search +from vyos.utils.process import cmd +from vyos.utils.dict import dict_search from vyos.configdict import get_vlan_ids from vyos.configdict import list_diff diff --git a/python/vyos/ifconfig/control.py b/python/vyos/ifconfig/control.py index 7a6b36e7c..c8366cb58 100644 --- a/python/vyos/ifconfig/control.py +++ b/python/vyos/ifconfig/control.py @@ -19,10 +19,10 @@ from inspect import signature from inspect import _empty from vyos.ifconfig.section import Section -from vyos.util import popen -from vyos.util import cmd -from vyos.util import read_file -from vyos.util import write_file +from vyos.utils.process import popen +from vyos.utils.process import cmd +from vyos.utils.file import read_file +from vyos.utils.file import write_file from vyos import debug class Control(Section): diff --git a/python/vyos/ifconfig/ethernet.py b/python/vyos/ifconfig/ethernet.py index 30bea3b86..4ff044c23 100644 --- a/python/vyos/ifconfig/ethernet.py +++ b/python/vyos/ifconfig/ethernet.py @@ -20,9 +20,9 @@ from glob import glob from vyos.base import Warning from vyos.ethtool import Ethtool from vyos.ifconfig.interface import Interface -from vyos.util import run -from vyos.util import dict_search -from vyos.util import read_file +from vyos.utils.dict import dict_search +from vyos.utils.file import read_file +from vyos.utils.process import run from vyos.validate import assert_list @Interface.register diff --git a/python/vyos/ifconfig/geneve.py b/python/vyos/ifconfig/geneve.py index 7a05e47a7..fbb261a35 100644 --- a/python/vyos/ifconfig/geneve.py +++ b/python/vyos/ifconfig/geneve.py @@ -14,7 +14,7 @@ # License along with this library. If not, see <http://www.gnu.org/licenses/>. from vyos.ifconfig import Interface -from vyos.util import dict_search +from vyos.utils.dict import dict_search @Interface.register class GeneveIf(Interface): diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py index f6289a6e6..120f2131b 100644 --- a/python/vyos/ifconfig/interface.py +++ b/python/vyos/ifconfig/interface.py @@ -32,12 +32,12 @@ from vyos.configdict import list_diff from vyos.configdict import dict_merge from vyos.configdict import get_vlan_ids from vyos.template import render -from vyos.util import mac2eui64 -from vyos.util import dict_search -from vyos.util import read_file -from vyos.util import get_interface_config -from vyos.util import get_interface_namespace -from vyos.util import is_systemd_service_active +from vyos.utils.network import mac2eui64 +from vyos.utils.dict import dict_search +from vyos.utils.file import read_file +from vyos.utils.network import get_interface_config +from vyos.utils.network import get_interface_namespace +from vyos.utils.process import is_systemd_service_active from vyos.template import is_ipv4 from vyos.template import is_ipv6 from vyos.validate import is_intf_addr_assigned diff --git a/python/vyos/ifconfig/l2tpv3.py b/python/vyos/ifconfig/l2tpv3.py index fcd1fbf81..85a89ef8b 100644 --- a/python/vyos/ifconfig/l2tpv3.py +++ b/python/vyos/ifconfig/l2tpv3.py @@ -1,4 +1,4 @@ -# Copyright 2019-2021 VyOS maintainers and contributors <maintainers@vyos.io> +# Copyright 2019-2023 VyOS maintainers and contributors <maintainers@vyos.io> # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public @@ -15,7 +15,8 @@ from time import sleep from time import time -from vyos.util import run + +from vyos.utils.process import run from vyos.ifconfig.interface import Interface def wait_for_add_l2tpv3(timeout=10, sleep_interval=1, cmd=None): diff --git a/python/vyos/ifconfig/pppoe.py b/python/vyos/ifconfig/pppoe.py index 437fe0cae..fd4590beb 100644 --- a/python/vyos/ifconfig/pppoe.py +++ b/python/vyos/ifconfig/pppoe.py @@ -15,7 +15,7 @@ from vyos.ifconfig.interface import Interface from vyos.validate import assert_range -from vyos.util import get_interface_config +from vyos.utils.network import get_interface_config @Interface.register class PPPoEIf(Interface): diff --git a/python/vyos/ifconfig/tunnel.py b/python/vyos/ifconfig/tunnel.py index b7bf7d982..fb2f38e2b 100644 --- a/python/vyos/ifconfig/tunnel.py +++ b/python/vyos/ifconfig/tunnel.py @@ -17,7 +17,7 @@ # https://community.hetzner.com/tutorials/linux-setup-gre-tunnel from vyos.ifconfig.interface import Interface -from vyos.util import dict_search +from vyos.utils.dict import dict_search from vyos.validate import assert_list def enable_to_on(value): diff --git a/python/vyos/ifconfig/vti.py b/python/vyos/ifconfig/vti.py index dc99d365a..9ebbeb9ed 100644 --- a/python/vyos/ifconfig/vti.py +++ b/python/vyos/ifconfig/vti.py @@ -14,7 +14,7 @@ # License along with this library. If not, see <http://www.gnu.org/licenses/>. from vyos.ifconfig.interface import Interface -from vyos.util import dict_search +from vyos.utils.dict import dict_search @Interface.register class VTIIf(Interface): diff --git a/python/vyos/ifconfig/vxlan.py b/python/vyos/ifconfig/vxlan.py index 5baff10a9..6a9911588 100644 --- a/python/vyos/ifconfig/vxlan.py +++ b/python/vyos/ifconfig/vxlan.py @@ -15,7 +15,7 @@ from vyos import ConfigError from vyos.ifconfig import Interface -from vyos.util import dict_search +from vyos.utils.dict import dict_search @Interface.register class VXLANIf(Interface): diff --git a/python/vyos/migrator.py b/python/vyos/migrator.py index 87c74e1ea..872682bc0 100644 --- a/python/vyos/migrator.py +++ b/python/vyos/migrator.py @@ -20,7 +20,7 @@ import logging import vyos.defaults import vyos.component_version as component_version -from vyos.util import cmd +from vyos.utils.process import cmd log_file = os.path.join(vyos.defaults.directories['config'], 'vyos-migrate.log') diff --git a/python/vyos/nat.py b/python/vyos/nat.py index 53fd7fb33..5b8d5d1a3 100644 --- a/python/vyos/nat.py +++ b/python/vyos/nat.py @@ -15,7 +15,7 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. from vyos.template import is_ip_network -from vyos.util import dict_search_args +from vyos.utils.dict import dict_search_args from vyos.template import bracketize_ipv6 diff --git a/python/vyos/qos/base.py b/python/vyos/qos/base.py index 3983b1bc0..6c5a3d79c 100644 --- a/python/vyos/qos/base.py +++ b/python/vyos/qos/base.py @@ -16,9 +16,9 @@ import os from vyos.base import Warning -from vyos.util import cmd -from vyos.util import dict_search -from vyos.util import read_file +from vyos.utils.process import cmd +from vyos.utils.dict import dict_search +from vyos.utils.file import read_file from vyos.utils.network import get_protocol_by_name diff --git a/python/vyos/qos/priority.py b/python/vyos/qos/priority.py index 6d4a60a43..8182400f9 100644 --- a/python/vyos/qos/priority.py +++ b/python/vyos/qos/priority.py @@ -14,7 +14,7 @@ # License along with this library. If not, see <http://www.gnu.org/licenses/>. from vyos.qos.base import QoSBase -from vyos.util import dict_search +from vyos.utils.dict import dict_search class Priority(QoSBase): _parent = 1 diff --git a/python/vyos/remote.py b/python/vyos/remote.py index 66044fa52..15939a523 100644 --- a/python/vyos/remote.py +++ b/python/vyos/remote.py @@ -32,12 +32,12 @@ from requests import Session from requests.adapters import HTTPAdapter from requests.packages.urllib3 import PoolManager -from vyos.util import ask_yes_no +from vyos.utils.io import ask_yes_no from vyos.util import begin -from vyos.util import cmd -from vyos.util import make_incremental_progressbar -from vyos.util import make_progressbar -from vyos.util import print_error +from vyos.utils.process import cmd +from vyos.utils.io import make_incremental_progressbar +from vyos.utils.io import make_progressbar +from vyos.utils.io import print_error from vyos.version import get_version diff --git a/python/vyos/template.py b/python/vyos/template.py index 254a15e3a..3cf60cea9 100644 --- a/python/vyos/template.py +++ b/python/vyos/template.py @@ -20,10 +20,10 @@ from jinja2 import Environment from jinja2 import FileSystemLoader from jinja2 import ChainableUndefined from vyos.defaults import directories -from vyos.util import chmod -from vyos.util import chown -from vyos.util import dict_search_args -from vyos.util import makedir +from vyos.utils.dict import dict_search_args +from vyos.utils.file import makedir +from vyos.utils.permission import chmod +from vyos.utils.permission import chown # Holds template filters registered via register_filter() _FILTERS = {} @@ -424,7 +424,7 @@ def get_dhcp_router(interface): if not os.path.exists(lease_file): return None - from vyos.util import read_file + from vyos.utils.file import read_file for line in read_file(lease_file).splitlines(): if 'option routers' in line: (_, _, address) = line.split() diff --git a/python/vyos/util.py b/python/vyos/util.py index fac3a920b..0d7985d54 100644 --- a/python/vyos/util.py +++ b/python/vyos/util.py @@ -1,4 +1,4 @@ -# Copyright 2020-2022 VyOS maintainers and contributors <maintainers@vyos.io> +# Copyright 2020-2023 VyOS maintainers and contributors <maintainers@vyos.io> # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public @@ -22,351 +22,6 @@ import sys # where it is used so it is as local as possible to the execution # -from subprocess import Popen -from subprocess import PIPE -from subprocess import STDOUT -from subprocess import DEVNULL - -def popen(command, flag='', shell=None, input=None, timeout=None, env=None, - stdout=PIPE, stderr=PIPE, decode='utf-8'): - """ - popen is a wrapper helper aound subprocess.Popen - with it default setting it will return a tuple (out, err) - out: the output of the program run - err: the error code returned by the program - - it can be affected by the following flags: - shell: do not try to auto-detect if a shell is required - for example if a pipe (|) or redirection (>, >>) is used - input: data to sent to the child process via STDIN - the data should be bytes but string will be converted - timeout: time after which the command will be considered to have failed - env: mapping that defines the environment variables for the new process - stdout: define how the output of the program should be handled - - PIPE (default), sends stdout to the output - - DEVNULL, discard the output - stderr: define how the output of the program should be handled - - None (default), send/merge the data to/with stderr - - PIPE, popen will append it to output - - STDOUT, send the data to be merged with stdout - - DEVNULL, discard the output - decode: specify the expected text encoding (utf-8, ascii, ...) - the default is explicitely utf-8 which is python's own default - - usage: - get both stdout and stderr: popen('command', stdout=PIPE, stderr=STDOUT) - discard stdout and get stderr: popen('command', stdout=DEVNUL, stderr=PIPE) - """ - - # airbag must be left as an import in the function as otherwise we have a - # a circual import dependency - from vyos import debug - from vyos import airbag - - # log if the flag is set, otherwise log if command is set - if not debug.enabled(flag): - flag = 'command' - - cmd_msg = f"cmd '{command}'" - debug.message(cmd_msg, flag) - - use_shell = shell - stdin = None - if shell is None: - use_shell = False - if ' ' in command: - use_shell = True - if env: - use_shell = True - - if input: - stdin = PIPE - input = input.encode() if type(input) is str else input - - p = Popen(command, stdin=stdin, stdout=stdout, stderr=stderr, - env=env, shell=use_shell) - - pipe = p.communicate(input, timeout) - - pipe_out = b'' - if stdout == PIPE: - pipe_out = pipe[0] - - pipe_err = b'' - if stderr == PIPE: - pipe_err = pipe[1] - - str_out = pipe_out.decode(decode).replace('\r\n', '\n').strip() - str_err = pipe_err.decode(decode).replace('\r\n', '\n').strip() - - out_msg = f"returned (out):\n{str_out}" - if str_out: - debug.message(out_msg, flag) - - if str_err: - err_msg = f"returned (err):\n{str_err}" - # this message will also be send to syslog via airbag - debug.message(err_msg, flag, destination=sys.stderr) - - # should something go wrong, report this too via airbag - airbag.noteworthy(cmd_msg) - airbag.noteworthy(out_msg) - airbag.noteworthy(err_msg) - - return str_out, p.returncode - - -def run(command, flag='', shell=None, input=None, timeout=None, env=None, - stdout=DEVNULL, stderr=PIPE, decode='utf-8'): - """ - A wrapper around popen, which discard the stdout and - will return the error code of a command - """ - _, code = popen( - command, flag, - stdout=stdout, stderr=stderr, - input=input, timeout=timeout, - env=env, shell=shell, - decode=decode, - ) - return code - - -def cmd(command, flag='', shell=None, input=None, timeout=None, env=None, - stdout=PIPE, stderr=PIPE, decode='utf-8', raising=None, message='', - expect=[0]): - """ - A wrapper around popen, which returns the stdout and - will raise the error code of a command - - raising: specify which call should be used when raising - the class should only require a string as parameter - (default is OSError) with the error code - expect: a list of error codes to consider as normal - """ - decoded, code = popen( - command, flag, - stdout=stdout, stderr=stderr, - input=input, timeout=timeout, - env=env, shell=shell, - decode=decode, - ) - if code not in expect: - feedback = message + '\n' if message else '' - feedback += f'failed to run command: {command}\n' - feedback += f'returned: {decoded}\n' - feedback += f'exit code: {code}' - if raising is None: - # error code can be recovered with .errno - raise OSError(code, feedback) - else: - raise raising(feedback) - return decoded - - -def rc_cmd(command, flag='', shell=None, input=None, timeout=None, env=None, - stdout=PIPE, stderr=STDOUT, decode='utf-8'): - """ - A wrapper around popen, which returns the return code - of a command and stdout - - % rc_cmd('uname') - (0, 'Linux') - % rc_cmd('ip link show dev eth99') - (1, 'Device "eth99" does not exist.') - """ - out, code = popen( - command, flag, - stdout=stdout, stderr=stderr, - input=input, timeout=timeout, - env=env, shell=shell, - decode=decode, - ) - return code, out - - -def call(command, flag='', shell=None, input=None, timeout=None, env=None, - stdout=PIPE, stderr=PIPE, decode='utf-8'): - """ - A wrapper around popen, which print the stdout and - will return the error code of a command - """ - out, code = popen( - command, flag, - stdout=stdout, stderr=stderr, - input=input, timeout=timeout, - env=env, shell=shell, - decode=decode, - ) - if out: - print(out) - return code - - -def read_file(fname, defaultonfailure=None): - """ - read the content of a file, stripping any end characters (space, newlines) - should defaultonfailure be not None, it is returned on failure to read - """ - try: - """ Read a file to string """ - with open(fname, 'r') as f: - data = f.read().strip() - return data - except Exception as e: - if defaultonfailure is not None: - return defaultonfailure - raise e - -def write_file(fname, data, defaultonfailure=None, user=None, group=None, mode=None, append=False): - """ - Write content of data to given fname, should defaultonfailure be not None, - it is returned on failure to read. - - If directory of file is not present, it is auto-created. - """ - dirname = os.path.dirname(fname) - if not os.path.isdir(dirname): - os.makedirs(dirname, mode=0o755, exist_ok=False) - chown(dirname, user, group) - - try: - """ Write a file to string """ - bytes = 0 - with open(fname, 'w' if not append else 'a') as f: - bytes = f.write(data) - chown(fname, user, group) - chmod(fname, mode) - return bytes - except Exception as e: - if defaultonfailure is not None: - return defaultonfailure - raise e - -def read_json(fname, defaultonfailure=None): - """ - read and json decode the content of a file - should defaultonfailure be not None, it is returned on failure to read - """ - import json - try: - with open(fname, 'r') as f: - data = json.load(f) - return data - except Exception as e: - if defaultonfailure is not None: - return defaultonfailure - raise e - - -def chown(path, user, group): - """ change file/directory owner """ - from pwd import getpwnam - from grp import getgrnam - - if user is None or group is None: - return False - - # path may also be an open file descriptor - if not isinstance(path, int) and not os.path.exists(path): - return False - - uid = getpwnam(user).pw_uid - gid = getgrnam(group).gr_gid - os.chown(path, uid, gid) - return True - - -def chmod(path, bitmask): - # path may also be an open file descriptor - if not isinstance(path, int) and not os.path.exists(path): - return - if bitmask is None: - return - os.chmod(path, bitmask) - - -def chmod_600(path): - """ make file only read/writable by owner """ - from stat import S_IRUSR, S_IWUSR - - bitmask = S_IRUSR | S_IWUSR - chmod(path, bitmask) - - -def chmod_750(path): - """ make file/directory only executable to user and group """ - from stat import S_IRUSR, S_IWUSR, S_IXUSR, S_IRGRP, S_IXGRP - - bitmask = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP - chmod(path, bitmask) - - -def chmod_755(path): - """ make file executable by all """ - from stat import S_IRUSR, S_IWUSR, S_IXUSR, S_IRGRP, S_IXGRP, S_IROTH, S_IXOTH - - bitmask = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | \ - S_IROTH | S_IXOTH - chmod(path, bitmask) - - -def makedir(path, user=None, group=None): - if os.path.exists(path): - return - os.makedirs(path, mode=0o755) - chown(path, user, group) - -def colon_separated_to_dict(data_string, uniquekeys=False): - """ Converts a string containing newline-separated entries - of colon-separated key-value pairs into a dict. - - Such files are common in Linux /proc filesystem - - Args: - data_string (str): data string - uniquekeys (bool): whether to insist that keys are unique or not - - Returns: dict - - Raises: - ValueError: if uniquekeys=True and the data string has - duplicate keys. - - Note: - If uniquekeys=True, then dict entries are always strings, - otherwise they are always lists of strings. - """ - import re - key_value_re = re.compile('([^:]+)\s*\:\s*(.*)') - - data_raw = re.split('\n', data_string) - - data = {} - - for l in data_raw: - l = l.strip() - if l: - match = re.match(key_value_re, l) - if match and (len(match.groups()) == 2): - key = match.groups()[0].strip() - value = match.groups()[1].strip() - else: - raise ValueError(f"""Line "{l}" could not be parsed a colon-separated pair """, l) - if key in data.keys(): - if uniquekeys: - raise ValueError("Data string has duplicate keys: {0}".format(key)) - else: - data[key].append(value) - else: - if uniquekeys: - data[key] = value - else: - data[key] = [value] - else: - pass - - return data def _mangle_dict_keys(data, regex, replacement, abs_path=[], no_tag_node_value_mangle=False, mod=0): """ Mangles dict keys according to a regex and replacement character. @@ -414,68 +69,6 @@ def _mangle_dict_keys(data, regex, replacement, abs_path=[], no_tag_node_value_m def mangle_dict_keys(data, regex, replacement, abs_path=[], no_tag_node_value_mangle=False): return _mangle_dict_keys(data, regex, replacement, abs_path=abs_path, no_tag_node_value_mangle=no_tag_node_value_mangle, mod=0) -def _get_sub_dict(d, lpath): - k = lpath[0] - if k not in d.keys(): - return {} - c = {k: d[k]} - lpath = lpath[1:] - if not lpath: - return c - elif not isinstance(c[k], dict): - return {} - return _get_sub_dict(c[k], lpath) - -def get_sub_dict(source, lpath, get_first_key=False): - """ Returns the sub-dict of a nested dict, defined by path of keys. - - Args: - source (dict): Source dict to extract from - lpath (list[str]): sequence of keys - - Returns: source, if lpath is empty, else - {key : source[..]..[key]} for key the last element of lpath, if exists - {} otherwise - """ - if not isinstance(source, dict): - raise TypeError("source must be of type dict") - if not isinstance(lpath, list): - raise TypeError("path must be of type list") - if not lpath: - return source - - ret = _get_sub_dict(source, lpath) - - if get_first_key and lpath and ret: - tmp = next(iter(ret.values())) - if not isinstance(tmp, dict): - raise TypeError("Data under node is not of type dict") - ret = tmp - - return ret - -def process_running(pid_file): - """ Checks if a process with PID in pid_file is running """ - from psutil import pid_exists - if not os.path.isfile(pid_file): - return False - with open(pid_file, 'r') as f: - pid = f.read().strip() - return pid_exists(int(pid)) - -def process_named_running(name, cmdline: str=None): - """ Checks if process with given name is running and returns its PID. - If Process is not running, return None - """ - from psutil import process_iter - for p in process_iter(['name', 'pid', 'cmdline']): - if cmdline: - if p.info['name'] == name and cmdline in p.info['cmdline']: - return p.info['pid'] - elif p.info['name'] == name: - return p.info['pid'] - return None - def is_list_equal(first: list, second: list) -> bool: """ Check if 2 lists are equal and list not empty """ if len(first) != len(second) or len(first) == 0: @@ -620,13 +213,6 @@ def get_cfg_group_id(): group_data = getgrnam(cfg_group) return group_data.gr_gid - -def file_is_persistent(path): - import re - location = r'^(/config|/opt/vyatta/etc/config)' - absolute = os.path.abspath(os.path.dirname(path)) - return re.match(location,absolute) - def wait_for_inotify(file_path, pre_hook=None, event_type=None, timeout=None, sleep_interval=0.1): """ Waits for an inotify event to occur """ if not os.path.dirname(file_path): @@ -668,91 +254,6 @@ def wait_for_file_write_complete(file_path, pre_hook=None, timeout=None, sleep_i wait_for_inotify(file_path, event_type='IN_CLOSE_WRITE', pre_hook=pre_hook, timeout=timeout, sleep_interval=sleep_interval) -def commit_in_progress(): - """ Not to be used in normal op mode scripts! """ - - # The CStore backend locks the config by opening a file - # The file is not removed after commit, so just checking - # if it exists is insufficient, we need to know if it's open by anyone - - # There are two ways to check if any other process keeps a file open. - # The first one is to try opening it and see if the OS objects. - # That's faster but prone to race conditions and can be intrusive. - # The other one is to actually check if any process keeps it open. - # It's non-intrusive but needs root permissions, else you can't check - # processes of other users. - # - # Since this will be used in scripts that modify the config outside of the CLI - # framework, those knowingly have root permissions. - # For everything else, we add a safeguard. - from psutil import process_iter - from psutil import NoSuchProcess - from getpass import getuser - from vyos.defaults import commit_lock - - if getuser() != 'root': - raise OSError('This functions needs to be run as root to return correct results!') - - for proc in process_iter(): - try: - files = proc.open_files() - if files: - for f in files: - if f.path == commit_lock: - return True - except NoSuchProcess as err: - # Process died before we could examine it - pass - # Default case - return False - - -def wait_for_commit_lock(): - """ Not to be used in normal op mode scripts! """ - from time import sleep - # Very synchronous approach to multiprocessing - while commit_in_progress(): - sleep(1) - -def ask_input(question, default='', numeric_only=False, valid_responses=[]): - question_out = question - if default: - question_out += f' (Default: {default})' - response = '' - while True: - response = input(question_out + ' ').strip() - if not response and default: - return default - if numeric_only: - if not response.isnumeric(): - print("Invalid value, try again.") - continue - response = int(response) - if valid_responses and response not in valid_responses: - print("Invalid value, try again.") - continue - break - return response - -def ask_yes_no(question, default=False) -> bool: - """Ask a yes/no question via input() and return their answer.""" - from sys import stdout - default_msg = "[Y/n]" if default else "[y/N]" - while True: - try: - stdout.write("%s %s " % (question, default_msg)) - c = input().lower() - if c == '': - return default - elif c in ("y", "ye", "yes"): - return True - elif c in ("n", "no"): - return False - else: - stdout.write("Please respond with yes/y or no/n\n") - except EOFError: - stdout.write("\nPlease respond with yes/y or no/n\n") - def is_admin() -> bool: """Look if current user is in sudo group""" from getpass import getuser @@ -761,7 +262,6 @@ def is_admin() -> bool: (_, _, _, admin_group_members) = getgrnam('sudo') return current_user in admin_group_members - def mac2eui64(mac, prefix=None): """ Convert a MAC address to a EUI64 address or, with prefix provided, a full @@ -795,6 +295,7 @@ def get_half_cpus(): def check_kmod(k_mod): """ Common utility function to load required kernel modules on demand """ from vyos import ConfigError + from vyos.utils.process import call if isinstance(k_mod, str): k_mod = k_mod.split() for module in k_mod: @@ -814,60 +315,6 @@ def find_device_file(device): return None -def dict_search(path, dict_object): - """ Traverse Python dictionary (dict_object) delimited by dot (.). - Return value of key if found, None otherwise. - - This is faster implementation then jmespath.search('foo.bar', dict_object)""" - if not isinstance(dict_object, dict) or not path: - return None - - parts = path.split('.') - inside = parts[:-1] - if not inside: - if path not in dict_object: - return None - return dict_object[path] - c = dict_object - for p in parts[:-1]: - c = c.get(p, {}) - return c.get(parts[-1], None) - -def dict_search_args(dict_object, *path): - # Traverse dictionary using variable arguments - # Added due to above function not allowing for '.' in the key names - # Example: dict_search_args(some_dict, 'key', 'subkey', 'subsubkey', ...) - if not isinstance(dict_object, dict) or not path: - return None - - for item in path: - if item not in dict_object: - return None - dict_object = dict_object[item] - return dict_object - -def dict_search_recursive(dict_object, key, path=[]): - """ Traverse a dictionary recurisvely and return the value of the key - we are looking for. - - Thankfully copied from https://stackoverflow.com/a/19871956 - - Modified to yield optional path to found keys - """ - if isinstance(dict_object, list): - for i in dict_object: - new_path = path + [i] - for x in dict_search_recursive(i, key, new_path): - yield x - elif isinstance(dict_object, dict): - if key in dict_object: - new_path = path + [key] - yield dict_object[key], new_path - for k, j in dict_object.items(): - new_path = path + [k] - for x in dict_search_recursive(j, key, new_path): - yield x - def convert_data(data): """Convert multiple types of data to types usable in CLI @@ -898,114 +345,6 @@ def convert_data(data): dict_tmp[key] = convert_data(value) return dict_tmp -def get_bridge_fdb(interface): - """ Returns the forwarding database entries for a given interface """ - if not os.path.exists(f'/sys/class/net/{interface}'): - return None - from json import loads - tmp = loads(cmd(f'bridge -j fdb show dev {interface}')) - return tmp - -def get_interface_config(interface): - """ Returns the used encapsulation protocol for given interface. - If interface does not exist, None is returned. - """ - if not os.path.exists(f'/sys/class/net/{interface}'): - return None - from json import loads - tmp = loads(cmd(f'ip --detail --json link show dev {interface}'))[0] - return tmp - -def get_interface_address(interface): - """ Returns the used encapsulation protocol for given interface. - If interface does not exist, None is returned. - """ - if not os.path.exists(f'/sys/class/net/{interface}'): - return None - from json import loads - tmp = loads(cmd(f'ip --detail --json addr show dev {interface}'))[0] - return tmp - -def get_interface_namespace(iface): - """ - Returns wich netns the interface belongs to - """ - from json import loads - # Check if netns exist - tmp = loads(cmd(f'ip --json netns ls')) - if len(tmp) == 0: - return None - - for ns in tmp: - netns = f'{ns["name"]}' - # Search interface in each netns - data = loads(cmd(f'ip netns exec {netns} ip --json link show')) - for tmp in data: - if iface == tmp["ifname"]: - return netns - -def get_all_vrfs(): - """ Return a dictionary of all system wide known VRF instances """ - from json import loads - tmp = loads(cmd('ip --json vrf list')) - # Result is of type [{"name":"red","table":1000},{"name":"blue","table":2000}] - # so we will re-arrange it to a more nicer representation: - # {'red': {'table': 1000}, 'blue': {'table': 2000}} - data = {} - for entry in tmp: - name = entry.pop('name') - data[name] = entry - return data - -def print_error(str='', end='\n'): - """ - Print `str` to stderr, terminated with `end`. - Used for warnings and out-of-band messages to avoid mangling precious - stdout output. - """ - sys.stderr.write(str) - sys.stderr.write(end) - sys.stderr.flush() - -def make_progressbar(): - """ - Make a procedure that takes two arguments `done` and `total` and prints a - progressbar based on the ratio thereof, whose length is determined by the - width of the terminal. - """ - import shutil, math - col, _ = shutil.get_terminal_size() - col = max(col - 15, 20) - def print_progressbar(done, total): - if done <= total: - increment = total / col - length = math.ceil(done / increment) - percentage = str(math.ceil(100 * done / total)).rjust(3) - print_error(f'[{length * "#"}{(col - length) * "_"}] {percentage}%', '\r') - # Print a newline so that the subsequent prints don't overwrite the full bar. - if done == total: - print_error() - return print_progressbar - -def make_incremental_progressbar(increment: float): - """ - Make a generator that displays a progressbar that grows monotonically with - every iteration. - First call displays it at 0% and every subsequent iteration displays it - at `increment` increments where 0.0 < `increment` < 1.0. - Intended for FTP and HTTP transfers with stateless callbacks. - """ - print_progressbar = make_progressbar() - total = 0.0 - while total < 1.0: - print_progressbar(total, 1.0) - yield - total += increment - print_progressbar(1, 1) - # Ignore further calls. - while True: - yield - def begin(*args): """ Evaluate arguments in order and return the result of the *last* argument. @@ -1020,67 +359,16 @@ def begin0(*args): """ return args[0] -def is_systemd_service_active(service): - """ Test is a specified systemd service is activated. - Returns True if service is active, false otherwise. - Copied from: https://unix.stackexchange.com/a/435317 """ - tmp = cmd(f'systemctl show --value -p ActiveState {service}') - return bool((tmp == 'active')) - -def is_systemd_service_running(service): - """ Test is a specified systemd service is actually running. - Returns True if service is running, false otherwise. - Copied from: https://unix.stackexchange.com/a/435317 """ - tmp = cmd(f'systemctl show --value -p SubState {service}') - return bool((tmp == 'running')) - -def check_port_availability(ipaddress, port, protocol): - """ - Check if port is available and not used by any service - Return False if a port is busy or IP address does not exists - Should be used carefully for services that can start listening - dynamically, because IP address may be dynamic too - """ - from socketserver import TCPServer, UDPServer - from ipaddress import ip_address - - # verify arguments - try: - ipaddress = ip_address(ipaddress).compressed - except: - raise ValueError(f'The {ipaddress} is not a valid IPv4 or IPv6 address') - if port not in range(1, 65536): - raise ValueError(f'The port number {port} is not in the 1-65535 range') - if protocol not in ['tcp', 'udp']: - raise ValueError( - f'The protocol {protocol} is not supported. Only tcp and udp are allowed' - ) - - # check port availability - try: - if protocol == 'tcp': - server = TCPServer((ipaddress, port), None, bind_and_activate=True) - if protocol == 'udp': - server = UDPServer((ipaddress, port), None, bind_and_activate=True) - server.server_close() - except Exception as e: - # errno.h: - #define EADDRINUSE 98 /* Address already in use */ - if e.errno == 98: - return False - - return True - def install_into_config(conf, config_paths, override_prompt=True): # Allows op-mode scripts to install values if called from an active config session # config_paths: dict of config paths # override_prompt: if True, user will be prompted before existing nodes are overwritten - if not config_paths: return None from vyos.config import Config - + from vyos.utils.io import ask_yes_no + from vyos.utils.process import cmd if not Config().in_session(): print('You are not in configure mode, commands to install manually from configure mode:') for path in config_paths: @@ -1109,27 +397,6 @@ def install_into_config(conf, config_paths, override_prompt=True): if count > 0: print(f'{count} value(s) installed. Use "compare" to see the pending changes, and "commit" to apply.') -def is_wwan_connected(interface): - """ Determine if a given WWAN interface, e.g. wwan0 is connected to the - carrier network or not """ - import json - - if not interface.startswith('wwan'): - raise ValueError(f'Specified interface "{interface}" is not a WWAN interface') - - # ModemManager is required for connection(s) - if service is not running, - # there won't be any connection at all! - if not is_systemd_service_active('ModemManager.service'): - return False - - modem = interface.lstrip('wwan') - - tmp = cmd(f'mmcli --modem {modem} --output-json') - tmp = json.loads(tmp) - - # return True/False if interface is in connected state - return dict_search('modem.generic.state', tmp) == 'connected' - def load_as_module(name: str, path: str): import importlib.util diff --git a/python/vyos/utils/__init__.py b/python/vyos/utils/__init__.py index 5c7a9ecb8..abc9af5da 100644 --- a/python/vyos/utils/__init__.py +++ b/python/vyos/utils/__init__.py @@ -13,5 +13,13 @@ # You should have received a copy of the GNU Lesser General Public # License along with this library. If not, see <http://www.gnu.org/licenses/>. -from vyos.utils import network from vyos.utils import boot +from vyos.utils import commit +from vyos.utils import convert +from vyos.utils import dict +from vyos.utils import file +from vyos.utils import io +from vyos.utils import network +from vyos.utils import permission +from vyos.utils import process +from vyos.utils import system diff --git a/python/vyos/utils/commit.py b/python/vyos/utils/commit.py new file mode 100644 index 000000000..105aed8c2 --- /dev/null +++ b/python/vyos/utils/commit.py @@ -0,0 +1,60 @@ +# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io> +# +# This library 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. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library. If not, see <http://www.gnu.org/licenses/>. + +def commit_in_progress(): + """ Not to be used in normal op mode scripts! """ + + # The CStore backend locks the config by opening a file + # The file is not removed after commit, so just checking + # if it exists is insufficient, we need to know if it's open by anyone + + # There are two ways to check if any other process keeps a file open. + # The first one is to try opening it and see if the OS objects. + # That's faster but prone to race conditions and can be intrusive. + # The other one is to actually check if any process keeps it open. + # It's non-intrusive but needs root permissions, else you can't check + # processes of other users. + # + # Since this will be used in scripts that modify the config outside of the CLI + # framework, those knowingly have root permissions. + # For everything else, we add a safeguard. + from psutil import process_iter + from psutil import NoSuchProcess + from getpass import getuser + from vyos.defaults import commit_lock + + if getuser() != 'root': + raise OSError('This functions needs to be run as root to return correct results!') + + for proc in process_iter(): + try: + files = proc.open_files() + if files: + for f in files: + if f.path == commit_lock: + return True + except NoSuchProcess as err: + # Process died before we could examine it + pass + # Default case + return False + + +def wait_for_commit_lock(): + """ Not to be used in normal op mode scripts! """ + from time import sleep + # Very synchronous approach to multiprocessing + while commit_in_progress(): + sleep(1) diff --git a/python/vyos/utils/file.py b/python/vyos/utils/file.py index 2560a35be..667a2464b 100644 --- a/python/vyos/utils/file.py +++ b/python/vyos/utils/file.py @@ -14,7 +14,19 @@ # License along with this library. If not, see <http://www.gnu.org/licenses/>. import os +from vyos.utils.permission import chown +def makedir(path, user=None, group=None): + if os.path.exists(path): + return + os.makedirs(path, mode=0o755) + chown(path, user, group) + +def file_is_persistent(path): + import re + location = r'^(/config|/opt/vyatta/etc/config)' + absolute = os.path.abspath(os.path.dirname(path)) + return re.match(location,absolute) def read_file(fname, defaultonfailure=None): """ diff --git a/python/vyos/utils/network.py b/python/vyos/utils/network.py index 209bc9ecc..8db598f05 100644 --- a/python/vyos/utils/network.py +++ b/python/vyos/utils/network.py @@ -13,6 +13,8 @@ # You should have received a copy of the GNU Lesser General Public # License along with this library. If not, see <http://www.gnu.org/licenses/>. +import os + def get_protocol_by_name(protocol_name): """Get protocol number by protocol name @@ -27,7 +29,7 @@ def get_protocol_by_name(protocol_name): return protocol_name def interface_exists_in_netns(interface_name, netns): - from vyos.util import rc_cmd + from vyos.utils.process import rc_cmd rc, out = rc_cmd(f'ip netns exec {netns} ip link show dev {interface_name}') if rc == 0: return True @@ -35,9 +37,155 @@ def interface_exists_in_netns(interface_name, netns): def get_interface_vrf(interface): """ Returns VRF of given interface """ - from vyos.util import dict_search - from vyos.util import get_interface_config + from vyos.utils.dict import dict_search + from vyos.utils.network import get_interface_config tmp = get_interface_config(interface) if dict_search('linkinfo.info_slave_kind', tmp) == 'vrf': return tmp['master'] return 'default' + +def get_interface_config(interface): + """ Returns the used encapsulation protocol for given interface. + If interface does not exist, None is returned. + """ + if not os.path.exists(f'/sys/class/net/{interface}'): + return None + from json import loads + from vyos.utils.process import cmd + tmp = loads(cmd(f'ip --detail --json link show dev {interface}'))[0] + return tmp + +def get_interface_address(interface): + """ Returns the used encapsulation protocol for given interface. + If interface does not exist, None is returned. + """ + if not os.path.exists(f'/sys/class/net/{interface}'): + return None + from json import loads + from vyos.utils.process import cmd + tmp = loads(cmd(f'ip --detail --json addr show dev {interface}'))[0] + return tmp + +def get_interface_namespace(iface): + """ + Returns wich netns the interface belongs to + """ + from json import loads + from vyos.utils.process import cmd + # Check if netns exist + tmp = loads(cmd(f'ip --json netns ls')) + if len(tmp) == 0: + return None + + for ns in tmp: + netns = f'{ns["name"]}' + # Search interface in each netns + data = loads(cmd(f'ip netns exec {netns} ip --json link show')) + for tmp in data: + if iface == tmp["ifname"]: + return netns + + +def is_wwan_connected(interface): + """ Determine if a given WWAN interface, e.g. wwan0 is connected to the + carrier network or not """ + import json + from vyos.utils.process import cmd + + if not interface.startswith('wwan'): + raise ValueError(f'Specified interface "{interface}" is not a WWAN interface') + + # ModemManager is required for connection(s) - if service is not running, + # there won't be any connection at all! + if not is_systemd_service_active('ModemManager.service'): + return False + + modem = interface.lstrip('wwan') + + tmp = cmd(f'mmcli --modem {modem} --output-json') + tmp = json.loads(tmp) + + # return True/False if interface is in connected state + return dict_search('modem.generic.state', tmp) == 'connected' + +def get_bridge_fdb(interface): + """ Returns the forwarding database entries for a given interface """ + if not os.path.exists(f'/sys/class/net/{interface}'): + return None + from json import loads + from vyos.utils.process import cmd + tmp = loads(cmd(f'bridge -j fdb show dev {interface}')) + return tmp + +def get_all_vrfs(): + """ Return a dictionary of all system wide known VRF instances """ + from json import loads + from vyos.utils.process import cmd + tmp = loads(cmd('ip --json vrf list')) + # Result is of type [{"name":"red","table":1000},{"name":"blue","table":2000}] + # so we will re-arrange it to a more nicer representation: + # {'red': {'table': 1000}, 'blue': {'table': 2000}} + data = {} + for entry in tmp: + name = entry.pop('name') + data[name] = entry + return data + +def mac2eui64(mac, prefix=None): + """ + Convert a MAC address to a EUI64 address or, with prefix provided, a full + IPv6 address. + Thankfully copied from https://gist.github.com/wido/f5e32576bb57b5cc6f934e177a37a0d3 + """ + import re + from ipaddress import ip_network + # http://tools.ietf.org/html/rfc4291#section-2.5.1 + eui64 = re.sub(r'[.:-]', '', mac).lower() + eui64 = eui64[0:6] + 'fffe' + eui64[6:] + eui64 = hex(int(eui64[0:2], 16) ^ 2)[2:].zfill(2) + eui64[2:] + + if prefix is None: + return ':'.join(re.findall(r'.{4}', eui64)) + else: + try: + net = ip_network(prefix, strict=False) + euil = int('0x{0}'.format(eui64), 16) + return str(net[euil]) + except: # pylint: disable=bare-except + return + + +def check_port_availability(ipaddress, port, protocol): + """ + Check if port is available and not used by any service + Return False if a port is busy or IP address does not exists + Should be used carefully for services that can start listening + dynamically, because IP address may be dynamic too + """ + from socketserver import TCPServer, UDPServer + from ipaddress import ip_address + + # verify arguments + try: + ipaddress = ip_address(ipaddress).compressed + except: + raise ValueError(f'The {ipaddress} is not a valid IPv4 or IPv6 address') + if port not in range(1, 65536): + raise ValueError(f'The port number {port} is not in the 1-65535 range') + if protocol not in ['tcp', 'udp']: + raise ValueError(f'The protocol {protocol} is not supported. Only tcp and udp are allowed') + + # check port availability + try: + if protocol == 'tcp': + server = TCPServer((ipaddress, port), None, bind_and_activate=True) + if protocol == 'udp': + server = UDPServer((ipaddress, port), None, bind_and_activate=True) + server.server_close() + except Exception as e: + # errno.h: + #define EADDRINUSE 98 /* Address already in use */ + if e.errno == 98: + return False + + return True diff --git a/python/vyos/utils/permission.py b/python/vyos/utils/permission.py new file mode 100644 index 000000000..8c2d72b83 --- /dev/null +++ b/python/vyos/utils/permission.py @@ -0,0 +1,63 @@ +# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io> +# +# This library 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. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library. If not, see <http://www.gnu.org/licenses/>. + +import os + +def chown(path, user, group): + """ change file/directory owner """ + from pwd import getpwnam + from grp import getgrnam + + if user is None or group is None: + return False + + # path may also be an open file descriptor + if not isinstance(path, int) and not os.path.exists(path): + return False + + uid = getpwnam(user).pw_uid + gid = getgrnam(group).gr_gid + os.chown(path, uid, gid) + return True + +def chmod(path, bitmask): + # path may also be an open file descriptor + if not isinstance(path, int) and not os.path.exists(path): + return + if bitmask is None: + return + os.chmod(path, bitmask) + +def chmod_600(path): + """ make file only read/writable by owner """ + from stat import S_IRUSR, S_IWUSR + + bitmask = S_IRUSR | S_IWUSR + chmod(path, bitmask) + +def chmod_750(path): + """ make file/directory only executable to user and group """ + from stat import S_IRUSR, S_IWUSR, S_IXUSR, S_IRGRP, S_IXGRP + + bitmask = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP + chmod(path, bitmask) + +def chmod_755(path): + """ make file executable by all """ + from stat import S_IRUSR, S_IWUSR, S_IXUSR, S_IRGRP, S_IXGRP, S_IROTH, S_IXOTH + + bitmask = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | \ + S_IROTH | S_IXOTH + chmod(path, bitmask) diff --git a/python/vyos/utils/process.py b/python/vyos/utils/process.py new file mode 100644 index 000000000..15b26f4eb --- /dev/null +++ b/python/vyos/utils/process.py @@ -0,0 +1,230 @@ +# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io> +# +# This library 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. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library. If not, see <http://www.gnu.org/licenses/>. + +from subprocess import Popen +from subprocess import PIPE +from subprocess import STDOUT +from subprocess import DEVNULL + +def popen(command, flag='', shell=None, input=None, timeout=None, env=None, + stdout=PIPE, stderr=PIPE, decode='utf-8'): + """ + popen is a wrapper helper aound subprocess.Popen + with it default setting it will return a tuple (out, err) + out: the output of the program run + err: the error code returned by the program + + it can be affected by the following flags: + shell: do not try to auto-detect if a shell is required + for example if a pipe (|) or redirection (>, >>) is used + input: data to sent to the child process via STDIN + the data should be bytes but string will be converted + timeout: time after which the command will be considered to have failed + env: mapping that defines the environment variables for the new process + stdout: define how the output of the program should be handled + - PIPE (default), sends stdout to the output + - DEVNULL, discard the output + stderr: define how the output of the program should be handled + - None (default), send/merge the data to/with stderr + - PIPE, popen will append it to output + - STDOUT, send the data to be merged with stdout + - DEVNULL, discard the output + decode: specify the expected text encoding (utf-8, ascii, ...) + the default is explicitely utf-8 which is python's own default + + usage: + get both stdout and stderr: popen('command', stdout=PIPE, stderr=STDOUT) + discard stdout and get stderr: popen('command', stdout=DEVNUL, stderr=PIPE) + """ + + # airbag must be left as an import in the function as otherwise we have a + # a circual import dependency + from vyos import debug + from vyos import airbag + + # log if the flag is set, otherwise log if command is set + if not debug.enabled(flag): + flag = 'command' + + cmd_msg = f"cmd '{command}'" + debug.message(cmd_msg, flag) + + use_shell = shell + stdin = None + if shell is None: + use_shell = False + if ' ' in command: + use_shell = True + if env: + use_shell = True + + if input: + stdin = PIPE + input = input.encode() if type(input) is str else input + + p = Popen(command, stdin=stdin, stdout=stdout, stderr=stderr, + env=env, shell=use_shell) + + pipe = p.communicate(input, timeout) + + pipe_out = b'' + if stdout == PIPE: + pipe_out = pipe[0] + + pipe_err = b'' + if stderr == PIPE: + pipe_err = pipe[1] + + str_out = pipe_out.decode(decode).replace('\r\n', '\n').strip() + str_err = pipe_err.decode(decode).replace('\r\n', '\n').strip() + + out_msg = f"returned (out):\n{str_out}" + if str_out: + debug.message(out_msg, flag) + + if str_err: + from sys import stderr + err_msg = f"returned (err):\n{str_err}" + # this message will also be send to syslog via airbag + debug.message(err_msg, flag, destination=stderr) + + # should something go wrong, report this too via airbag + airbag.noteworthy(cmd_msg) + airbag.noteworthy(out_msg) + airbag.noteworthy(err_msg) + + return str_out, p.returncode + + +def run(command, flag='', shell=None, input=None, timeout=None, env=None, + stdout=DEVNULL, stderr=PIPE, decode='utf-8'): + """ + A wrapper around popen, which discard the stdout and + will return the error code of a command + """ + _, code = popen( + command, flag, + stdout=stdout, stderr=stderr, + input=input, timeout=timeout, + env=env, shell=shell, + decode=decode, + ) + return code + + +def cmd(command, flag='', shell=None, input=None, timeout=None, env=None, + stdout=PIPE, stderr=PIPE, decode='utf-8', raising=None, message='', + expect=[0]): + """ + A wrapper around popen, which returns the stdout and + will raise the error code of a command + + raising: specify which call should be used when raising + the class should only require a string as parameter + (default is OSError) with the error code + expect: a list of error codes to consider as normal + """ + decoded, code = popen( + command, flag, + stdout=stdout, stderr=stderr, + input=input, timeout=timeout, + env=env, shell=shell, + decode=decode, + ) + if code not in expect: + feedback = message + '\n' if message else '' + feedback += f'failed to run command: {command}\n' + feedback += f'returned: {decoded}\n' + feedback += f'exit code: {code}' + if raising is None: + # error code can be recovered with .errno + raise OSError(code, feedback) + else: + raise raising(feedback) + return decoded + + +def rc_cmd(command, flag='', shell=None, input=None, timeout=None, env=None, + stdout=PIPE, stderr=STDOUT, decode='utf-8'): + """ + A wrapper around popen, which returns the return code + of a command and stdout + + % rc_cmd('uname') + (0, 'Linux') + % rc_cmd('ip link show dev eth99') + (1, 'Device "eth99" does not exist.') + """ + out, code = popen( + command, flag, + stdout=stdout, stderr=stderr, + input=input, timeout=timeout, + env=env, shell=shell, + decode=decode, + ) + return code, out + +def call(command, flag='', shell=None, input=None, timeout=None, env=None, + stdout=PIPE, stderr=PIPE, decode='utf-8'): + """ + A wrapper around popen, which print the stdout and + will return the error code of a command + """ + out, code = popen( + command, flag, + stdout=stdout, stderr=stderr, + input=input, timeout=timeout, + env=env, shell=shell, + decode=decode, + ) + if out: + print(out) + return code + +def process_running(pid_file): + """ Checks if a process with PID in pid_file is running """ + from psutil import pid_exists + if not os.path.isfile(pid_file): + return False + with open(pid_file, 'r') as f: + pid = f.read().strip() + return pid_exists(int(pid)) + +def process_named_running(name, cmdline: str=None): + """ Checks if process with given name is running and returns its PID. + If Process is not running, return None + """ + from psutil import process_iter + for p in process_iter(['name', 'pid', 'cmdline']): + if cmdline: + if p.info['name'] == name and cmdline in p.info['cmdline']: + return p.info['pid'] + elif p.info['name'] == name: + return p.info['pid'] + return None + +def is_systemd_service_active(service): + """ Test is a specified systemd service is activated. + Returns True if service is active, false otherwise. + Copied from: https://unix.stackexchange.com/a/435317 """ + tmp = cmd(f'systemctl show --value -p ActiveState {service}') + return bool((tmp == 'active')) + +def is_systemd_service_running(service): + """ Test is a specified systemd service is actually running. + Returns True if service is running, false otherwise. + Copied from: https://unix.stackexchange.com/a/435317 """ + tmp = cmd(f'systemctl show --value -p SubState {service}') + return bool((tmp == 'running')) diff --git a/python/vyos/validate.py b/python/vyos/validate.py index e5d8c6043..7afbe81c9 100644 --- a/python/vyos/validate.py +++ b/python/vyos/validate.py @@ -100,8 +100,8 @@ def is_intf_addr_assigned(intf, address) -> bool: def is_addr_assigned(ip_address, vrf=None) -> bool: """ Verify if the given IPv4/IPv6 address is assigned to any interface """ from netifaces import interfaces - from vyos.util import get_interface_config - from vyos.util import dict_search + from vyos.utils.network import get_interface_config + from vyos.utils.dict import dict_search for interface in interfaces(): # Check if interface belongs to the requested VRF, if this is not the # case there is no need to proceed with this data set - continue loop @@ -218,7 +218,7 @@ def assert_mtu(mtu, ifname): assert_number(mtu) import json - from vyos.util import cmd + from vyos.utils.process import cmd out = cmd(f'ip -j -d link show dev {ifname}') # [{"ifindex":2,"ifname":"eth0","flags":["BROADCAST","MULTICAST","UP","LOWER_UP"],"mtu":1500,"qdisc":"pfifo_fast","operstate":"UP","linkmode":"DEFAULT","group":"default","txqlen":1000,"link_type":"ether","address":"08:00:27:d9:5b:04","broadcast":"ff:ff:ff:ff:ff:ff","promiscuity":0,"min_mtu":46,"max_mtu":16110,"inet6_addr_gen_mode":"none","num_tx_queues":1,"num_rx_queues":1,"gso_max_size":65536,"gso_max_segs":65535}] parsed = json.loads(out)[0] diff --git a/python/vyos/version.py b/python/vyos/version.py index fb706ad44..1c5651c83 100644 --- a/python/vyos/version.py +++ b/python/vyos/version.py @@ -1,4 +1,4 @@ -# Copyright 2017-2020 VyOS maintainers and contributors <maintainers@vyos.io> +# Copyright 2017-2023 VyOS maintainers and contributors <maintainers@vyos.io> # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public @@ -34,11 +34,11 @@ import json import requests import vyos.defaults -from vyos.util import read_file -from vyos.util import read_json -from vyos.util import popen -from vyos.util import run -from vyos.util import DEVNULL +from vyos.utils.file import read_file +from vyos.utils.file import read_json +from vyos.utils.process import popen +from vyos.utils.process import run +from vyos.utils.process import DEVNULL version_file = os.path.join(vyos.defaults.directories['data'], 'version.json') |