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Mini Shell
Mini Shell
import json
import logging
import os
import os.path
import pwd
import shutil
import sys
from collections import OrderedDict, defaultdict
from contextlib import suppress
from packaging.version import Version
from pathlib import Path
from typing import Dict, List, Set
from defence360agent.application.determine_hosting_panel import (
is_cpanel_installed,
)
from defence360agent.contracts import config
from defence360agent.utils import (
antivirus_mode,
check_run,
run,
get_external_ip,
)
from defence360agent.utils.kwconfig import KWConfig
from .. import base
from . import packages
from .whm import WHMAPILicenseError, whmapi1
CPANEL_PACKAGE_EXTENSIONS_PATH = Path("/var/cpanel/packages/extensions")
CPANEL_HOOKS_PATH = Path("/usr/local/cpanel")
PREINSTALL_PACKAGE_EXTENSIONS_PATH = (
Path(config.Packaging.DATADIR) / "cpanel/packages/extensions"
)
CPANEL_USERPLANS_PATH = "/etc/userplans"
CPANEL_USERDATADOMAINS_PATH = (
"/etc/userdatadomains;/var/cpanel/userdata/{user}/cache"
)
AV_PLUGIN_NAME = "imunify-antivirus"
IM360_PLUGIN_NAME = "imunify360"
PLUGIN_NAME = AV_PLUGIN_NAME if antivirus_mode.enabled else IM360_PLUGIN_NAME
logger = logging.getLogger(__name__)
CONFIG_FILE_TEMPLATE = "/etc/sysconfig/imunify360/cpanel/{name}.conf"
TCP_PORTS_CPANEL = base.TCP_PORTS_COMMON + ["2086-2087"]
BASE_DIR = "/home"
WWWACT_CONF = "/etc/wwwacct.conf"
_CACHE = {"userplans": {}, "userdatadomains": {}}
class cPanelException(base.PanelException):
pass
def forbid_dns_only(fn):
"""Decorator for functions on cPanel instance methods.
Calls original function if _is_dns_only() returns False, otherwise
throws cPanelException."""
async def wrapper(self, *args, **kwargs):
if self._is_dns_only():
raise self.exception("Method is not allowed for dnsonly panel")
return await fn(self, *args, **kwargs)
return wrapper
class AccountConfig(KWConfig):
SEARCH_PATTERN = r"^{}\s+(.*)?$"
WRITE_PATTERN = "{} {}"
DEFAULT_FILENAME = WWWACT_CONF
class cPanel(base.AbstractPanel):
NAME = "cPanel"
OPEN_PORTS = {
"tcp": {
"in": ["143", "465", "2077-2080", "2082-2083", "2095", "2096"]
+ TCP_PORTS_CPANEL,
"out": [
"37",
"43",
"113",
"873",
"2073",
"2089",
"2195",
"2703",
"6277",
"24441",
]
+ TCP_PORTS_CPANEL,
},
"udp": {
"in": ["20", "21", "53", "443"],
"out": ["20", "21", "53", "113", "123", "873", "6277", "24441"],
},
}
exception = cPanelException
smtp_allow_users = ["cpanel"] # type: List[str]
USER_INFO_DIR = "/var/cpanel/users.cache/"
@staticmethod
def _is_dns_only():
return os.path.isfile("/var/cpanel/dnsonly")
@classmethod
def get_server_ip(cls):
ip_conf = "/var/cpanel/mainip"
# fallback: in case there is not ip file
if not os.path.exists(ip_conf):
return get_external_ip()
with open(ip_conf) as f:
return f.read().strip()
@classmethod
def is_installed(cls):
return is_cpanel_installed()
@classmethod
async def version(cls):
_, data, _ = await run(["/usr/local/cpanel/cpanel", "-V"])
version = data.decode().split()
return version[0] if version else "unknown"
@base.ensure_valid_panel()
async def enable_imunify360_plugin(self, name=None):
plugin_name = name or PLUGIN_NAME
assert plugin_name in [AV_PLUGIN_NAME, IM360_PLUGIN_NAME]
config_filename = CONFIG_FILE_TEMPLATE.format(name=plugin_name)
new_conf = config_filename + ".rpmnew"
if os.path.exists(new_conf):
shutil.move(new_conf, config_filename)
if Version(await self.version()) > Version("65.0"):
os.system(
'/bin/sed -i -e "s@^target=.*@target=%s@g" ' % "_self"
+ config_filename
)
# (re-) register plugin
sys.stdout.write("cPanel: register_appconfig...\n")
os.system(
"/usr/local/cpanel/bin/register_appconfig " + config_filename
)
@base.ensure_valid_panel()
async def disable_imunify360_plugin(self, plugin_name=None):
config_filename = CONFIG_FILE_TEMPLATE.format(
name=plugin_name or PLUGIN_NAME
)
if os.path.exists(config_filename):
sys.stderr.write("cPanel: unregister_appconfig...\n")
os.system(
"/usr/local/cpanel/bin/unregister_appconfig " + config_filename
)
@forbid_dns_only
async def get_user_domains(self):
"""
:return: list: domains hosted on server via cpanel
"""
return [
domain
for user in await self.get_users()
for domain, user_path in self._userdomains(user)
]
@classmethod
def get_user_domains_details(
cls, username, _path=CPANEL_USERDATADOMAINS_PATH, quiet=True
):
domains = []
def parser(path, d, domain_data):
user_ = domain_data[0]
if user_ != username:
return
doc_type = domain_data[2]
docroot = domain_data[4]
domains.append(
{
"docroot": docroot,
"domain": d,
"type": doc_type,
}
)
cls._parse_userdatadomains(_path, parser, quiet=quiet)
return domains
async def _do_get_users(self, userplans_path: str) -> List[str]:
if not os.path.isfile(userplans_path):
return []
_cached_mtime = _CACHE["userplans"].get("mtime", 0)
if _cached_mtime == os.path.getmtime(userplans_path):
return _CACHE["userplans"]["users"]
with open(
userplans_path, encoding="utf-8", errors="surrogateescape"
) as f:
users = []
for line in f:
if (
not line.startswith("#")
and line.count(":") == 1
and len(line.strip()) > 3
):
users.append(line.split(":")[0].strip())
_CACHE["userplans"]["mtime"] = os.path.getmtime(userplans_path)
_CACHE["userplans"]["users"] = users
return users
async def get_users(
self,
) -> List[str]:
return await self._do_get_users(CPANEL_USERPLANS_PATH)
async def get_domain_to_owner(self) -> Dict[str, List[str]]:
"""
Returns dict with domain to list of users pairs
:return: dict domain to list of users:
"""
domain_to_users = defaultdict(list) # type: Dict[str, List[str]]
for user in await self.get_users():
for domain, _ in self._userdomains(user):
domain_to_users[domain].append(user)
return domain_to_users
async def get_domains_per_user(self):
"""
Returns dict with users to list of domains pairs
:return: dict user to list of domains
"""
user_to_domains = defaultdict(list)
for user in await self.get_users():
for domain, _ in self._userdomains(user):
user_to_domains[user].append(domain)
return user_to_domains
async def get_user_details(self) -> Dict[str, Dict[str, str]]:
"""
Returns dict with user to email and locale pairs
"""
user_details = {}
for user in await self.get_users():
try:
with open(os.path.join(self.USER_INFO_DIR, user)) as f:
user_info = json.load(f)
email = user_info.get("CONTACTEMAIL", "")
locale = user_info.get("LOCALE", "")
except (FileNotFoundError, json.JSONDecodeError):
email = ""
locale = ""
user_details[user] = {"email": email, "locale": locale}
return user_details
@classmethod
def _get_max_mtime(cls, _path):
"""checks mtime of userdatadomains files (including cache)
returns max mtime of all files"""
_mtimes = []
if "{user}" in _path:
call_as_user = pwd.getpwuid(os.getuid()).pw_name
_path = _path.replace("{user}", call_as_user)
path_list = _path.split(";")
for path_ in path_list:
if os.path.exists(path_):
_mtimes.append(os.path.getmtime(path_))
return max(_mtimes) if _mtimes else 0
@classmethod
def _get_from_cache(cls, cpuser, _path):
"""check and invalidate cache if needed"""
_cached_mtime = (
_CACHE["userdatadomains"].get(cpuser, {}).get("mtime", 0)
)
if _cached_mtime < cls._get_max_mtime(_path):
_CACHE["userdatadomains"][cpuser] = {}
return None
return _CACHE["userdatadomains"].get(cpuser, {}).get("domains", [])
@classmethod
def _userdomains(
cls, cpuser, _path=CPANEL_USERDATADOMAINS_PATH, quiet=True
):
cached_data = cls._get_from_cache(cpuser, _path)
if cached_data is not None:
return cached_data
# use dict to avoid duplicates
domains_tmp = OrderedDict()
domains = OrderedDict()
def parser(path, d, domain_data):
user_ = domain_data[0]
if user_ == cpuser:
document_root = domain_data[4]
if "main" == domain_data[2]:
# main domain must be first in list
domains.update({d: document_root})
else:
domains_tmp.update({d: document_root})
cls._parse_userdatadomains(_path, parser, quiet=quiet)
domains.update(domains_tmp)
_CACHE["userdatadomains"][cpuser] = {
"mtime": cls._get_max_mtime(_path),
"domains": domains.items(),
}
return domains.items()
@staticmethod
def _parse_userdatadomains(_path, parser, quiet=True):
if "{user}" in _path:
call_as_user = pwd.getpwuid(os.getuid()).pw_name
_path = _path.replace("{user}", call_as_user)
path_list = _path.split(";")
for path_ in path_list:
try:
file_ = open(path_, "rb")
except Exception as e:
if not quiet:
logger.warning("Can't open file %s [%s]", path_, e)
continue
try:
# example line:
# test.russianguns.ru: russianguns==root==sub==russianguns.ru==
# /home/russianguns/fla==192.168.122.40:80======0
for i, line in enumerate(file_):
try:
line = line.decode()
except UnicodeDecodeError as e:
logger.warning(
'Broken %s line in file "%s"; line was ignored',
i,
path_,
)
continue
if not line.strip(): # ignore the empty string
continue
if line.count(": ") != 1:
if not quiet:
logger.warning(
"Can't parse %s line in file '%s'; "
"line was ignored",
i,
path_,
)
continue
domain, domain_raw_data = line.split(": ")
domain_data = domain_raw_data.strip().split("==")
parser(path_, domain, domain_data)
finally:
file_.close()
@classmethod
def is_extension_installed(cls, pkgs):
return all(
CPANEL_PACKAGE_EXTENSIONS_PATH.joinpath(file).is_file()
for file in pkgs
)
@classmethod
async def is_hook_installed(cls):
try:
hooks = await whmapi1("list_hooks")
category = next(
cat
for cat in hooks["categories"]
if cat["category"] == "Whostmgr"
)
for event_name in (
"Accounts::change_package",
"Accounts::Create",
"Accounts::Modify",
):
event = next(
ev
for ev in category["events"]
if ev["event"] == event_name
)
stage = next(
st for st in event["stages"] if st["stage"] == "post"
)
if not any(
action["hook"] == "ImunifyHook::hook_processing"
for action in stage["actions"]
):
return False
except (StopIteration, WHMAPILicenseError):
return False
return True
@classmethod
async def install_extension(
cls,
extention_name: str,
extention_files,
**kwargs,
) -> None:
# copy cpanel's package extension files
CPANEL_PACKAGE_EXTENSIONS_PATH.mkdir(
mode=0o700, parents=True, exist_ok=True
)
for filename in extention_files:
shutil.copy2(
PREINSTALL_PACKAGE_EXTENSIONS_PATH / filename,
CPANEL_PACKAGE_EXTENSIONS_PATH,
)
# enable extension for all packages
await packages.add_extension_for_all(extention_name, **kwargs)
# add hooks for native feature management
os.makedirs(config.Core.INBOX_HOOKS_DIR, mode=0o700, exist_ok=True)
shutil.copy2(
PREINSTALL_PACKAGE_EXTENSIONS_PATH / "ImunifyHook.pm",
CPANEL_HOOKS_PATH,
)
await check_run(
[
"/usr/local/cpanel/bin/manage_hooks",
"add",
"module",
"ImunifyHook",
]
)
@classmethod
async def uninstall_extension(cls, extension_name: str, extention_files):
# remove the hook
await check_run(
[
"/usr/local/cpanel/bin/manage_hooks",
"del",
"module",
"ImunifyHook",
]
)
with suppress(FileNotFoundError):
(CPANEL_HOOKS_PATH / "ImunifyHook.pm").unlink()
# remove the package extension from all packages
await packages.remove_extension_from_all(extension_name)
# remove cpanel's package extension files
for filename in extention_files:
with suppress(FileNotFoundError):
(CPANEL_PACKAGE_EXTENSIONS_PATH / filename).unlink()
@staticmethod
def mounts():
mounts = []
with open("/proc/mounts", "r") as f:
for line in f:
values = line.strip().split()
if len(values) > 1:
mounts.append(values[1])
return mounts
def basedirs(self) -> Set[str]:
"""Fetch list of basedirs.
On cPanel, basedir is configured as HOMEDIR variable in
/etc/wwwacct.conf. Also, there is a way to specify additional mount
points as containing user folders, through HOMEMATCH variable. If
value from HOMEMATCH variable is contained within a mount point path,
cPanel uses this directory too."""
homedir = AccountConfig("HOMEDIR").get()
homematch = AccountConfig("HOMEMATCH").get()
homedir = BASE_DIR if homedir is None else homedir
basedirs = {BASE_DIR, homedir}
if homematch is None:
return basedirs
for mount in self.mounts():
# exclude virtfs from basedirs (DEF-14266)
if homematch in mount and not mount.startswith("/home/virtfs/"):
basedirs.add(mount)
return basedirs
@classmethod
async def notify(cls, *, message_type, params, user=None):
"""
Notify a customer using cPanel iContact Notifications
"""
if not config.AdminContacts.ENABLE_ICONTACT_NOTIFICATIONS:
return False
if not config.should_send_user_notifications(username=user):
return False
data = {"message_type": message_type, "params": params, "user": user}
logger.info(f"{cls.__name__}.notify(%s)", data)
cmd = (
"/usr/local/cpanel/whostmgr/docroot/cgi"
"/imunify/handlers/notify.cgi"
)
stdin = json.dumps(data)
out = await check_run([cmd], input=stdin.encode())
return json.loads(out.decode(errors="surrogateescape"))
async def list_docroots(self) -> Dict[str, str]:
result = dict()
def parser(path, d, domain_data):
result[domain_data[4]] = domain_data[3]
self._parse_userdatadomains(
CPANEL_USERDATADOMAINS_PATH, parser, quiet=True
)
return result
Zerion Mini Shell 1.0