/usr/share/dh-python/dhpython/fs.py is in dh-python 1.20140128-1ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import logging
import os
import re
from filecmp import cmp as cmpfile
from os.path import exists, dirname, isdir, islink, join, split, splitext
from shutil import rmtree
from stat import ST_MODE, S_IXUSR, S_IXGRP, S_IXOTH
from dhpython import MULTIARCH_DIR_TPL
from dhpython.tools import fix_shebang, clean_egg_name
from dhpython.interpreter import Interpreter
log = logging.getLogger('dhpython')
def fix_locations(package, interpreter, versions, options):
"""Move files to the right location."""
# make a copy since we change version later
interpreter = Interpreter(interpreter)
for version in versions:
interpreter.version = version
dstdir = interpreter.sitedir(package)
for srcdir in interpreter.old_sitedirs(package):
if isdir(srcdir):
# TODO: what about relative symlinks?
log.debug('moving files from %s to %s', srcdir, dstdir)
share_files(srcdir, dstdir, interpreter, options)
parent_dir = '/'.join(srcdir.split('/')[:-1])
while parent_dir:
if exists(parent_dir):
if os.listdir(parent_dir):
break
os.rmdir(parent_dir)
parent_dir = dirname(parent_dir)
# do the same with debug locations
dstdir = interpreter.sitedir(package, gdb=True)
for srcdir in interpreter.old_sitedirs(package, gdb=True):
if isdir(srcdir):
log.debug('moving files from %s to %s', srcdir, dstdir)
share_files(srcdir, dstdir, interpreter, options)
parent_dir = '/'.join(srcdir.split('/')[:-1])
while parent_dir:
if exists(parent_dir):
if os.listdir(parent_dir):
break
os.rmdir(parent_dir)
parent_dir = dirname(parent_dir)
def share_files(srcdir, dstdir, interpreter, options):
"""Try to move as many files from srcdir to dstdir as possible."""
for i in os.listdir(srcdir):
fpath1 = join(srcdir, i)
if not options.no_ext_rename and splitext(i)[-1] == '.so':
# try to rename extension here as well (in :meth:`scan` info about
# Python version is gone)
version = interpreter.parse_public_version(srcdir)
if version:
# note that if ver is empty, default Python version will be used
fpath1_orig = fpath1
new_name = interpreter.check_extname(i, version)
if new_name:
fpath1 = join(srcdir, new_name)
if exists(fpath1):
log.warn('destination file exist, '
'cannot rename %s to %s', fpath1_orig, fpath1)
else:
log.info('renaming %s to %s', fpath1_orig, fpath1)
os.renames(fpath1_orig, fpath1)
i = new_name
fpath2 = join(dstdir, i)
if not isdir(fpath1) and not exists(fpath2):
# do not rename directories here - all .so files have to be renamed first
os.renames(fpath1, fpath2)
continue
if isdir(fpath1):
share_files(fpath1, fpath2, interpreter, options)
elif cmpfile(fpath1, fpath2, shallow=False):
os.remove(fpath1)
# XXX: check symlinks
if exists(srcdir) and not os.listdir(srcdir):
os.rmdir(srcdir)
class Scan:
UNWANTED_DIRS = re.compile(r'.*/__pycache__(/.*)?$')
UNWANTED_FILES = re.compile(r'.*\.py[co]$')
def __init__(self, interpreter, package, dpath=None, options=None):
self.interpreter = interpreter
self.impl = interpreter.impl
self.package = package
if not dpath:
self.proot = "debian/%s" % self.package
else:
dpath = dpath.strip('/')
self.proot = join('debian', self.package, dpath)
self.dpath = dpath
del dpath
self.options = options
self.result = {'requires.txt': set(),
'nsp.txt': set(),
'shebangs': set(),
'public_vers': set(),
'private_dirs': {},
'compile': False,
'ext_vers': set(),
'ext_no_version': set()}
for root, dirs, file_names in os.walk(self.proot):
if interpreter.should_ignore(root):
del dirs[:]
continue
self.current_private_dir = None
self.current_pub_version = version = interpreter.parse_public_version(root)
if self.current_pub_version: # i.e. a public site-packages directory
if root.endswith('-packages'):
self.result['public_vers'].add(version)
else:
self.current_private_dir = self.check_private_dir(root)
if not self.current_private_dir:
# i.e. not a public dir and not a private dir
is_bin_dir = self.is_bin_dir(root)
if is_bin_dir:
self.handle_bin_dir(root, file_names)
else: # not a public, private or bin directory
# continue with a subdirectory
continue
for name in dirs:
dpath = join(root, name)
if self.is_unwanted_dir(dpath):
rmtree(dpath)
dirs.remove(name)
continue
if self.is_egg_dir(root):
self.handle_egg_dir(root, file_names)
continue
# check files
for fn in sorted(file_names):
# sorted() to make sure .so files are handled before .so.foo
fpath = join(root, fn)
if self.is_unwanted_file(fpath):
log.debug('removing unwanted: %s', fpath)
os.remove(fpath)
continue
if self.is_egg_file(fpath):
self.handle_egg_file(fpath)
continue
if not exists(fpath):
# possibly removed while handling .so symlinks
if islink(fpath) and '.so.' in split(fpath)[-1]:
# dangling symlink to (now removed/renamed) .so file
# which wasn't removed yet (see test203's quux.so.0)
log.info('removing dangling symlink: %s', fpath)
os.remove(fpath)
continue
fext = splitext(fn)[-1][1:]
if fext == 'so':
if not self.options.no_ext_rename:
fpath = self.rename_ext(fpath)
ver = self.handle_ext(fpath)
ver = ver or version
if ver:
self.current_result.setdefault('ext_vers', set()).add(ver)
else:
self.current_result.setdefault('ext_no_version', set()).add(fpath)
if self.current_private_dir:
if exists(fpath) and fext != 'so':
mode = os.stat(fpath)[ST_MODE]
if mode & S_IXUSR or mode & S_IXGRP or mode & S_IXOTH:
if (options.no_shebang_rewrite or
fix_shebang(fpath, self.options.shebang)) and \
not self.options.ignore_shebangs:
try:
res = Interpreter.from_file(fpath)
except Exception as e:
log.debug('cannot parse shebang %s: %s', fpath, e)
else:
self.current_result.setdefault('shebangs', set()).add(res)
if fext == 'py' and self.handle_public_module(fpath) is not False:
self.current_result['compile'] = True
log.debug("package %s details = %s", package, self.result)
@property
def current_result(self):
if self.current_private_dir:
return self.result['private_dirs'].setdefault(self.current_private_dir, {})
return self.result
def is_unwanted_dir(self, dpath):
return self.__class__.UNWANTED_DIRS.match(dpath)
def is_unwanted_file(self, fpath):
if self.__class__.UNWANTED_FILES.match(fpath):
return True
if self.current_pub_version and self.is_dbg_package\
and self.options.clean_dbg_pkg\
and splitext(fpath)[-1][1:] not in ('so', 'h'):
return True
@property
def private_dirs_to_check(self):
if self.dpath:
# scan private directory *only*
return [self.dpath]
if self.dpath is False:
result = []
else:
result = [i % self.package for i in (
'usr/lib/%s',
'usr/lib/games/%s',
'usr/share/%s',
'usr/share/games/%s')]
return result
@property
def is_dbg_package(self):
#return self.interpreter.debug
return self.package.endswith('-dbg')
def check_private_dir(self, dpath):
"""Return private dir's root if it's a private dir."""
for i in self.private_dirs_to_check:
if dpath.startswith(join('debian', self.package, i)):
return '/' + i
def rename_ext(self, fpath):
"""Add multiarch triplet, etc. Return new name.
This method is invoked for all .so files in public or private directories.
"""
path, fname = fpath.rsplit('/', 1)
if self.current_pub_version and islink(fpath):
# replace symlinks with extensions in dist-packages directory
dstfpath = fpath
links = set()
while islink(dstfpath):
links.add(dstfpath)
dstfpath = join(path, os.readlink(dstfpath))
if exists(dstfpath) and '.so.' in split(dstfpath)[-1]:
# rename .so.$FOO symlinks, remove other ones
for lpath in links:
log.info('removing symlink: %s', lpath)
os.remove(lpath)
log.info('renaming %s to %s', dstfpath, fname)
os.rename(dstfpath, fpath)
if MULTIARCH_DIR_TPL.match(fpath):
# ignore /lib/i386-linux-gnu/, /usr/lib/x86_64-kfreebsd-gnu/, etc.
return fpath
new_fn = self.interpreter.check_extname(fname, self.current_pub_version)
if new_fn:
# TODO: what about symlinks pointing to this file
new_fpath = join(path, new_fn)
if exists(new_fpath):
log.warn('destination file exist, '
'cannot rename %s to %s', fname, new_fn)
else:
log.info('renaming %s to %s', fname, new_fn)
os.rename(fpath, new_fpath)
return new_fpath
return fpath
def handle_ext(self, fpath):
"""Handle .so file, return its version if detected."""
def handle_public_module(self, fpath):
pass
def is_bin_dir(self, dpath):
"""Check if dir is one from PATH ones."""
# dname = debian/packagename/usr/games
spath = dpath.strip('/').split('/', 4)
if len(spath) > 4:
return False # assume bin directories don't have subdirectories
if dpath.endswith(('/sbin', '/bin', '/usr/games')):
# /(s)bin or /usr/(s)bin or /usr/games
return True
def handle_bin_dir(self, dpath, file_names):
if self.options.no_shebang_rewrite or self.options.ignore_shebangs:
return
for fn in file_names:
fpath = join(dpath, fn)
if fix_shebang(fpath, self.options.shebang):
try:
res = Interpreter.from_file(fpath)
except Exception as e:
log.debug('cannot parse shebang %s: %s', fpath, e)
else:
self.result['shebangs'].add(res)
def is_egg_dir(self, dname):
"""Check if given directory contains egg-info."""
return dname.endswith('.egg-info')
def handle_egg_dir(self, dpath, file_names):
path, dname = dpath.rsplit('/', 1)
if self.is_dbg_package and self.options.clean_dbg_pkg:
rmtree(dpath)
return
clean_name = clean_egg_name(dname)
if clean_name != dname:
if exists(join(path, clean_name)):
log.info('removing %s (%s is already available)', dname, clean_name)
rmtree(dpath)
return
else:
log.info('renaming %s to %s', dname, clean_name)
os.rename(dpath, join(path, clean_name))
dname = clean_name
dpath = join(path, dname)
if file_names:
if 'requires.txt' in file_names:
self.result['requires.txt'].add(join(dpath, 'requires.txt'))
if 'namespace_packages.txt' in file_names:
self.result['nsp.txt'].add(join(dpath, 'namespace_packages.txt'))
if 'SOURCES.txt' in file_names:
os.remove(join(dpath, 'SOURCES.txt'))
file_names.remove('SOURCES.txt')
def is_egg_file(self, fpath):
"""Check if given file contains egg-info."""
return fpath.endswith('.egg-info')
def handle_egg_file(self, fpath):
root, name = fpath.rsplit('/', 1)
clean_name = clean_egg_name(name)
if clean_name != name:
if exists(join(root, clean_name)):
log.info('removing %s (%s is already available)',
name, clean_name)
os.remove(fpath)
else:
log.info('renaming %s to %s', name, clean_name)
os.rename(fpath, join(root, clean_name))
def cleanup(self):
if self.is_dbg_package and self.options.clean_dbg_pkg:
# remove empty directories in -dbg packages
proot = self.proot + '/usr/lib'
for root, dirs, file_names in os.walk(proot, topdown=False):
if '-packages/' in root and not file_names:
try:
os.rmdir(root)
except Exception:
pass
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