mirror of
https://github.com/ceph/ceph
synced 2024-12-27 14:03:25 +00:00
43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
import errno
|
|
import os
|
|
|
|
def munge(path):
|
|
"""
|
|
Munge a potentially hostile path name to be safe to use.
|
|
|
|
This very definitely changes the meaning of the path,
|
|
but it only does that for unsafe paths.
|
|
"""
|
|
# explicitly ignoring windows as a platform
|
|
segments = path.split('/')
|
|
# filter out empty segments like foo//bar
|
|
segments = [s for s in segments if s!='']
|
|
# filter out no-op segments like foo/./bar
|
|
segments = [s for s in segments if s!='.']
|
|
# all leading dots become underscores; makes .. safe too
|
|
for idx, seg in enumerate(segments):
|
|
if seg.startswith('.'):
|
|
segments[idx] = '_'+seg[1:]
|
|
# empty string, "/", "//", etc
|
|
if not segments:
|
|
segments = ['_']
|
|
return '/'.join(segments)
|
|
|
|
|
|
def makedirs(root, path):
|
|
"""
|
|
os.makedirs gets confused if the path contains '..', and root might.
|
|
|
|
This relies on the fact that `path` has been normalized by munge().
|
|
"""
|
|
segments = path.split('/')
|
|
for seg in segments:
|
|
root = os.path.join(root, seg)
|
|
try:
|
|
os.mkdir(root)
|
|
except OSError as e:
|
|
if e.errno == errno.EEXIST:
|
|
pass
|
|
else:
|
|
raise
|