From: Petr Lautrbach <plautrba@redhat.com>
To: selinux@vger.kernel.org
Cc: Petr Lautrbach <plautrba@redhat.com>
Subject: [PATCH v2 5/5] python/sepolicy: Make policy files sorting more robust
Date: Thu, 3 Jan 2019 13:03:40 +0100 [thread overview]
Message-ID: <20190103120340.2695-5-plautrba@redhat.com> (raw)
In-Reply-To: <20190103120340.2695-1-plautrba@redhat.com>
The sorting order seems to be fragile because '100' < '99', so the policy
filename needs to be parsed in order to extract the version as an integer and
sort according to it.
Based on idea from Nicolas Iooss <nicolas.iooss@m4x.org>
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
---
python/sepolicy/sepolicy/__init__.py | 25 ++++++++++++++++++-------
1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/python/sepolicy/sepolicy/__init__.py b/python/sepolicy/sepolicy/__init__.py
index b69a6b94..6f729472 100644
--- a/python/sepolicy/sepolicy/__init__.py
+++ b/python/sepolicy/sepolicy/__init__.py
@@ -119,23 +119,34 @@ all_allow_rules = None
all_transitions = None
+def policy_sortkey(policy_path):
+ # Parse the extension of a policy path which looks like .../policy/policy.31
+ extension = policy_path.rsplit('/policy.', 1)[1]
+ try:
+ return int(extension), policy_path
+ except ValueError:
+ # Fallback with sorting on the full path
+ return 0, policy_path
+
def get_installed_policy(root="/"):
try:
path = root + selinux.selinux_binary_policy_path()
policies = glob.glob("%s.*" % path)
- policies.sort()
+ policies.sort(key=policy_sortkey)
return policies[-1]
except:
pass
raise ValueError(_("No SELinux Policy installed"))
-def get_store_policy(store, root="/"):
- try:
- policies = glob.glob("%s%s/policy/policy.*" % (selinux.selinux_path(), store))
- policies.sort()
- return policies[-1]
- except:
+def get_store_policy(store):
+ """Get the path to the policy file located in the given store name"""
+ policies = glob.glob("%s%s/policy/policy.*" %
+ (selinux.selinux_path(), store))
+ if not policies:
return None
+ # Return the policy with the higher version number
+ policies.sort(key=policy_sortkey)
+ return policies[-1]
def policy(policy_file):
global all_domains
--
2.20.1
next prev parent reply other threads:[~2019-01-03 12:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-20 15:14 Fix semanage in envinronment without default policy or when -S <store> is used Petr Lautrbach
2018-12-20 15:14 ` [PATCH 1/4] python/semanage: move valid_types initialisations to class constructors Petr Lautrbach
2018-12-20 22:34 ` Nicolas Iooss
2019-01-02 13:14 ` Petr Lautrbach
2018-12-20 15:14 ` [PATCH 2/4] python/semanage: import sepolicy only when it's needed Petr Lautrbach
2018-12-20 15:14 ` [PATCH 3/4] python/sepolicy: Add sepolicy.load_store_policy(store) Petr Lautrbach
2018-12-20 21:55 ` Nicolas Iooss
2019-01-02 14:13 ` Petr Lautrbach
2018-12-20 15:14 ` [PATCH 4/4] python/semanage: Load a store policy and set the store SELinux policy root Petr Lautrbach
2019-01-03 12:03 ` [PATCH v2 1/5] python/semanage: move valid_types initialisations to class constructors Petr Lautrbach
2019-01-03 12:03 ` [PATCH v2 2/5] python/semanage: import sepolicy only when it's needed Petr Lautrbach
2019-01-03 12:03 ` [PATCH v2 3/5] python/sepolicy: Add sepolicy.load_store_policy(store) Petr Lautrbach
2019-01-03 12:03 ` [PATCH v2 4/5] python/semanage: Load a store policy and set the store SELinux policy root Petr Lautrbach
2019-01-03 12:03 ` Petr Lautrbach [this message]
2019-01-05 14:43 ` [PATCH v2 5/5] python/sepolicy: Make policy files sorting more robust Nicolas Iooss
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190103120340.2695-5-plautrba@redhat.com \
--to=plautrba@redhat.com \
--cc=selinux@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).