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#!/usr/bin/python
# Authors:
# Endi S. Dewata <edewata@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright (C) 2013 Red Hat, Inc.
# All rights reserved.
#
"""
Module containing utility functions and classes for the Dogtag python code
"""
import os
import shutil
def copy(source, dest):
"""
Copy a file or a folder and its contents.
"""
# remove trailing slashes
if source[-1] == '/':
source = source[:-1]
if dest[-1] == '/':
dest = dest[:-1]
sourceparent = os.path.dirname(source)
destparent = os.path.dirname(dest)
copydirs(sourceparent, destparent)
if os.path.isfile(source):
copyfile(source, dest)
else:
for sourcepath, _, filenames in os.walk(source):
relpath = sourcepath[len(source):]
destpath = dest + relpath
if destpath == '':
destpath = '/'
copydirs(sourcepath, destpath)
for filename in filenames:
sourcefile = os.path.join(sourcepath, filename)
targetfile = os.path.join(destpath, filename)
copyfile(sourcefile, targetfile)
def copyfile(source, dest, overwrite=True):
"""
Copy a file or link while preserving its attributes.
"""
# if dest already exists and not overwriting, do nothing
if os.path.exists(dest) and not overwrite:
return
if os.path.islink(source):
target = os.readlink(source)
os.symlink(target, dest)
stat = os.lstat(source)
os.lchown(dest, stat.st_uid, stat.st_gid)
else:
shutil.copyfile(source, dest)
stat = os.stat(source)
os.utime(dest, (stat.st_atime, stat.st_mtime))
os.chmod(dest, stat.st_mode)
os.chown(dest, stat.st_uid, stat.st_gid)
def copydirs(source, dest):
"""
Copy a folder and its parents while preserving their attributes.
"""
if os.path.exists(dest):
return
destparent = os.path.dirname(dest)
if not os.path.exists(destparent):
sourceparent = os.path.dirname(source)
copydirs(sourceparent, destparent)
os.mkdir(dest)
stat = os.stat(source)
os.utime(dest, (stat.st_atime, stat.st_mtime))
os.chmod(dest, stat.st_mode)
os.chown(dest, stat.st_uid, stat.st_gid)
def chown(path, uid, gid):
"""
Change ownership of a folder and its contents.
"""
os.chown(path, uid, gid)
for item in os.listdir(path):
itempath = os.path.join(path, item)
if os.path.isfile(itempath):
os.chown(itempath, uid, gid)
elif os.path.isdir(itempath):
chown(itempath, uid, gid)
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