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__init__.py
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__pycache__
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common.py
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dns_common.py
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dns_common_lexicon.py
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dns_test_common.py
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dns_test_common_lexicon.py
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enhancements.py
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storage.py
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util.py
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Editing: util.py
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"""Plugin utilities.""" import logging from typing import List from certbot import util from certbot.compat import os from certbot.compat.misc import STANDARD_BINARY_DIRS logger = logging.getLogger(__name__) def get_prefixes(path: str) -> List[str]: """Retrieves all possible path prefixes of a path, in descending order of length. For instance: * (Linux) `/a/b/c` returns `['/a/b/c', '/a/b', '/a', '/']` * (Windows) `C:\\a\\b\\c` returns `['C:\\a\\b\\c', 'C:\\a\\b', 'C:\\a', 'C:']` :param str path: the path to break into prefixes :returns: all possible path prefixes of given path in descending order :rtype: `list` of `str` """ prefix = os.path.normpath(path) prefixes: List[str] = [] while prefix: prefixes.append(prefix) prefix, _ = os.path.split(prefix) # break once we hit the root path if prefix == prefixes[-1]: break return prefixes def path_surgery(cmd: str) -> bool: """Attempt to perform PATH surgery to find cmd Mitigates https://github.com/certbot/certbot/issues/1833 :param str cmd: the command that is being searched for in the PATH :returns: True if the operation succeeded, False otherwise """ path = os.environ["PATH"] added = [] for d in STANDARD_BINARY_DIRS: if d not in path: path += os.pathsep + d added.append(d) if any(added): logger.debug("Can't find %s, attempting PATH mitigation by adding %s", cmd, os.pathsep.join(added)) os.environ["PATH"] = path if util.exe_exists(cmd): return True expanded = " expanded" if any(added) else "" logger.debug("Failed to find executable %s in%s PATH: %s", cmd, expanded, path) return False