__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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For_More_Tools:
"""Resolve firewall binary paths to absolute locations."""
import logging
import os
from functools import lru_cache
logger = logging.getLogger(__name__)
_SEARCH_DIRS = ("/usr/sbin", "/usr/bin", "/sbin", "/bin")
@lru_cache(maxsize=None)
def _find_executable(name: str) -> str:
"""Resolve *name* to an absolute path by checking well-known directories
first, then ``$PATH``. Returns the bare *name* as a fallback."""
for dir_ in _SEARCH_DIRS:
path = os.path.join(dir_, name)
if os.path.isfile(path) and os.access(path, os.X_OK):
return path
for dir_ in os.environ.get("PATH", "").split(os.pathsep):
if not dir_:
continue
path = os.path.join(dir_, name)
if os.path.isfile(path) and os.access(path, os.X_OK):
return path
logger.error(
"Cannot find executable '%s' in PATH %s",
name,
os.environ.get("PATH"),
)
return name
def get_iptables_exe():
return _find_executable("iptables")
def get_ip6tables_exe():
return _find_executable("ip6tables")
def get_iptables_restore_exe():
return _find_executable("iptables-restore")
def get_ip6tables_restore_exe():
return _find_executable("ip6tables-restore")