jw-python/tools/python/jwutils/Config.py
Jan Lindemann 84a4053157 Add class Config
Signed-off-by: Jan Lindemann <jan@janware.com>
2025-01-20 11:39:56 +01:00

104 lines
3.7 KiB
Python

# -*- coding: utf-8 -*-
import os
import re
import glob
import sys
from pathlib import Path, PosixPath
from typing import Optional, Dict, cast
from jwutils import stree
from .stree.StringTree import StringTree
from .log import *
class Config(): # export
def __init__(self, search_dirs: Optional[list[str]]=None, glob_paths: Optional[list[str]]=None,
defaults: Dict[str, str]=None, tree: Optional[StringTree]=None, parent=None,
root_section=None) -> None:
def __is_abs(path):
if path is None:
return False
if len(path) == 0:
return False
if path[0] != '/':
return False
return True
self.__parent = parent
exe = Path(os.path.basename(sys.argv[0])).stem
if glob_paths is None:
glob_paths = [f'.{exe}', f'{exe}.conf']
if search_dirs is None:
env_key = re.sub('[-.]', '_', exe)
search_dirs = os.getenv(env_key)
self.__conf = tree if tree else StringTree("", "")
for path in glob_paths:
dirs = search_dirs
if dirs is None:
dirs = [''] if __is_abs(path) else [ str(Path.home()), str(Path.cwd()) ]
for d in dirs:
g = d + '/' + path
slog(DEBUG, 'Looking for config "{}"'.format(g))
for f in glob.glob(g):
slog(DEBUG, 'Reading config "{}"'.format(f))
paths_buf = []
tree = stree.read(f, paths_buf=paths_buf)
assert(len(paths_buf))
for p in paths_buf:
st = os.stat(p)
if st.st_mode & 0o0077:
for item in tree.child_list():
if item.content is None:
continue
if not re.search('password|secret', cast(str, item.content), flags=re.IGNORECASE):
continue
msg = "Config files define secret, but at least one has file permissions open for group or world"
slog(ERR, f'{msg}:')
for pp in paths_buf:
slog(ERR, f' {((os.stat(p).st_mode) & 0o7777):o} {pp}')
raise Exception(msg)
tree.dump(DEBUG, f)
self.__conf.add("", tree)
if root_section is not None:
self.__conf = self.__conf.get(root_section)
if self.__conf is None:
self.__conf = StringTree("", "")
if defaults is not None:
for key, val in defaults.items():
if self.__conf.get(key) is None:
self.__conf.set(key, val)
self.__conf.dump(DEBUG, "superposed configuration")
def __getitem__(self, key: str) -> Optional[str]:
return self.get(key)
@property
def parent(self):
return self.__parent
def set(self, key: str, val):
self.__conf[key] = val
def get(self, key: str, default = None) -> Optional[str]:
item = self.__conf.get(key)
if item:
return item.value()
return default
# This is an alias for get()
def value(self, key: str, default = None) -> Optional[str]:
return self.get(key, default)
def branch(self, path: str) -> Optional[StringTree]:
if self.__conf:
return Config(tree=self.__conf.get(path), parent=self)
return None
def dump(self, prio: int, *args, **kwargs) -> None:
caller = get_caller_pos(1, kwargs)
self.__conf.dump(prio, caller=caller, *args, **kwargs)