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import re
from typing import Iterable, Tuple, Optional
from debputy.architecture_support import DpkgArchitectureBuildProcessValuesTable
from debputy.exceptions import PureVirtualPathError, TestPathWithNonExistentFSPathError
from debputy.intermediate_manifest import PathType
from debputy.manifest_parser.base_types import SymbolicMode, OctalMode, FileSystemMode
from debputy.manifest_parser.util import AttributePath
from debputy.packages import BinaryPackage
from debputy.path_matcher import (
MATCH_ANYTHING,
MatchRule,
ExactFileSystemPath,
DirectoryBasedMatch,
MatchRuleType,
BasenameGlobMatch,
)
from debputy.substitution import Substitution
from debputy.types import VP
from debputy.util import _normalize_path, perl_module_dirs
# Imported from dh_fixperms
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION = "permission normalization"
attribute_path = AttributePath.builtin_path()[
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION
]
_STD_FILE_MODE = OctalMode(0o644)
_PATH_FILE_MODE = OctalMode(0o755)
_HAS_BIN_SHBANG_RE = re.compile(rb"^#!\s*/(?:usr/)?s?bin", re.ASCII)
class _UsrShareDocMatchRule(DirectoryBasedMatch):
def __init__(self) -> None:
super().__init__(
MatchRuleType.ANYTHING_BENEATH_DIR,
_normalize_path("usr/share/doc", with_prefix=True),
path_type=PathType.FILE,
)
def finditer(self, fs_root: VP, *, ignore_paths=None) -> Iterable[VP]:
doc_dir = fs_root.lookup(self._directory)
if doc_dir is None:
return
for path_in_doc_dir in doc_dir.iterdir:
if ignore_paths is not None and ignore_paths(path_in_doc_dir):
continue
if path_in_doc_dir.is_file:
yield path_in_doc_dir
for subpath in path_in_doc_dir.iterdir:
if subpath.name == "examples" and subpath.is_dir:
continue
if ignore_paths is not None:
yield from (
f
for f in subpath.all_paths()
if f.is_file and not ignore_paths(f)
)
else:
yield from (f for f in subpath.all_paths() if f.is_file)
def describe_match_short(self) -> str:
return f"All files beneath {self._directory}/ except .../<pkg>/examples"
def describe_match_exact(self) -> str:
return self.describe_match_short()
class _ShebangScriptFiles(MatchRule):
def __init__(self) -> None:
super().__init__(MatchRuleType.GENERIC_GLOB)
def finditer(self, fs_root: VP, *, ignore_paths=None) -> Iterable[VP]:
for p in fs_root.all_paths():
if not p.is_file or (ignore_paths and ignore_paths(p)):
continue
try:
with p.open(byte_io=True) as fd:
c = fd.read(32)
except (PureVirtualPathError, TestPathWithNonExistentFSPathError):
continue
if _HAS_BIN_SHBANG_RE.match(c):
yield p
@property
def path_type(self) -> Optional[PathType]:
return PathType.FILE
def _full_pattern(self) -> str:
return "built-in - not a valid pattern"
def describe_match_short(self) -> str:
return "All scripts with a absolute #!-line for /(s)bin or /usr/(s)bin"
def describe_match_exact(self) -> str:
return self.describe_match_short()
USR_SHARE_DOC_MATCH_RULE = _UsrShareDocMatchRule()
SHEBANG_SCRIPTS = _ShebangScriptFiles()
del _UsrShareDocMatchRule
del _ShebangScriptFiles
def builtin_mode_normalization_rules(
dpkg_architecture_variables: DpkgArchitectureBuildProcessValuesTable,
dctrl_bin: BinaryPackage,
substitution: Substitution,
) -> Iterable[Tuple[MatchRule, FileSystemMode]]:
yield from (
(
MatchRule.from_path_or_glob(
x,
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
path_type=PathType.FILE,
),
_STD_FILE_MODE,
)
for x in (
"*.so.*",
"*.so",
"*.la",
"*.a",
"*.js",
"*.css",
"*.scss",
"*.sass",
"*.jpeg",
"*.jpg",
"*.png",
"*.gif",
"*.cmxs",
"*.node",
)
)
yield from (
(
MatchRule.recursive_beneath_directory(
x,
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
path_type=PathType.FILE,
),
_STD_FILE_MODE,
)
for x in (
"usr/share/man",
"usr/include",
"usr/share/applications",
"usr/share/lintian/overrides",
)
)
# The dh_fixperms tool recuses for these directories, but probably should not (see #1006927)
yield from (
(
MatchRule.from_path_or_glob(
f"{x}/*",
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
path_type=PathType.FILE,
),
_PATH_FILE_MODE,
)
for x in (
"usr/bin",
"usr/bin/mh",
"bin",
"usr/sbin",
"sbin",
"usr/games",
"usr/libexec",
"etc/init.d",
)
)
yield (
# Strictly speaking, dh_fixperms does a recursive search but in practice, it does not matter.
MatchRule.from_path_or_glob(
"etc/sudoers.d/*",
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
path_type=PathType.FILE,
),
OctalMode(0o440),
)
# The reportbug rule
yield (
ExactFileSystemPath(
substitution.substitute(
_normalize_path("usr/share/bug/{{PACKAGE}}"),
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
)
),
OctalMode(0o755),
)
yield (
MatchRule.recursive_beneath_directory(
"usr/share/bug/{{PACKAGE}}",
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
path_type=PathType.FILE,
substitution=substitution,
),
OctalMode(0o644),
)
yield (
ExactFileSystemPath(
substitution.substitute(
_normalize_path("usr/share/bug/{{PACKAGE}}/script"),
_PERMISSION_NORMALIZATION_SOURCE_DEFINITION,
)
),
OctalMode(0o755),
)
yield (
USR_SHARE_DOC_MATCH_RULE,
OctalMode(0o0644),
)
yield from (
(
BasenameGlobMatch(
"*.pm",
only_when_in_directory=perl_dir,
path_type=PathType.FILE,
recursive_match=True,
),
_STD_FILE_MODE,
)
for perl_dir in perl_module_dirs(dpkg_architecture_variables, dctrl_bin)
)
yield (
BasenameGlobMatch(
"*.ali",
only_when_in_directory=_normalize_path("usr/lib"),
path_type=PathType.FILE,
recursive_match=True,
),
OctalMode(0o444),
)
yield (
SHEBANG_SCRIPTS,
_PATH_FILE_MODE,
)
yield (
MATCH_ANYTHING,
SymbolicMode.parse_filesystem_mode(
"go=rX,u+rw,a-s",
attribute_path["**/*"],
),
)
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