Import the setools classes needed for Python bindings from specific
setools modules in order to reduce the dependency footprint
of the Python bindings. Importing the top-level module causes all
setools modules to be loaded which includes the modules that require
networkx.
SELinux packages belong to the group of core system packages on Gentoo
Linux. It is desirable to keep the system set as small as possible,
and the dependency between setools and networkx seems to be the easiest
link to break without major loss of functionality.
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Describe which type of regular expression is used in file context
definitions and which flags are in effect.
Explain how local file context modifications are processed.
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Acked-by: Petr Lautrbach <plautrba@redhat.com>
Empty stdout buffer before exiting when BrokenPipeError is
encountered. Otherwise python will flush the bufer during exit, which
may trigger the exception again.
https://docs.python.org/3/library/signal.html#note-on-sigpipe
Fixes:
#semanage fcontext -l | egrep -q -e '^/home'
BrokenPipeError: [Errno 32] Broken pipe
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='UTF-8'>
BrokenPipeError: [Errno 32] Broken pipe
Note that the error above only appears occasionally (usually only the
first line is printed).
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Acked-by: Nicolas Iooss <nicolas.iooss@m4x.org>
At least on Debian, /etc/protocols, which is used by
socket.getprotobyname() to resolve protocols to names, does not
contain an entry for "ipv4". In that case, set the protocol number
used by audit logs for "ipv4" to a fixed value. To ensure audit log
compatibility, let's use the same numeric value as Fedora: 4, which is
actually understood by kernel as IP over IP.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Network Mask argument for `semanage node` accepts also the simple CIDR
mask format, so let's document it.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
List modules for bash completion of `semanage module`.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Previously python/semanage/test-semanage.py returned 0 even when there was a
fail in some test and `make test` didn't indicate any problem.
Fixes:
$ make test
...
Ran 10 tests in 110.854s
FAILED (failures=4)
$ echo $?
0
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
Acked-by: Nicolas Iooss <nicolas.iooss@m4x.org>
ipaddress python module was added to standard library in Python 3.3 -
https://docs.python.org/3/library/ipaddress.html
seobject.py was the only consumer of IPy module so this dependency is not needed
anymore.
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
While using Ansible's Selinux module to manage ports, I discovered
that numerical ports caused an unhandled exception in 'seobject.py'.
This appears to be a bug, and I am proposing a fix which checks the
type of the argument before operating on it. This maintains the
original functionality in the case of a string, and acts in the same
fashion if you supply an integer.
I did not find any open bug report against the SELinux project. The
downstream bug report is here:
https://github.com/ansible/ansible/issues/60968
Signed-off-by: Joshua Schmidlkofer <joshua@joshuainnovates.us>
Fixes:
# semanage port -a -p sctp -t port_t 1234
ValueError: Protocol udp or tcp is required
# semanage port -d -p sctp -t port_t 1234
ValueError: Protocol udp or tcp is required
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Return value of "customized" has to be iterable.
Fixes:
"semanage export" with no modules in the system (eg. monolithic policy)
crashes:
Traceback (most recent call last):
File "/usr/sbin/semanage", line 970, in <module>
do_parser()
File "/usr/sbin/semanage", line 949, in do_parser
args.func(args)
File "/usr/sbin/semanage", line 771, in handleExport
for c in OBJECT.customized():
TypeError: 'NoneType' object is not iterable
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
- Add "customized" method to permissiveRecords which is than used for
"semanage permissive --extract" and "semanage export"
- Enable "semanage permissive --deleteall" (already implemented)
- Add "permissive" to the list of modules exported using
"semanage export"
- Update "semanage permissive" man page
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Using the "s0" default means that new login mappings are always added with "s0"
range instead of the range of SELinux user.
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
Use codespell (https://github.com/codespell-project/codespell) in order
to find many common misspellings that are present in English texts.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
- Python 2.7 is planned to be the last of the 2.x releases
- It's generally advised to use Python 3
- Majority of python/ scripts are already switched python3
- Users with python 2 only can still use:
$ make PYTHON=/usr/bin/python ....
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
Previous code traceback-ed when one of the mentioned option was used without
any argument as this state was not handled by the argument parser.
action='store' stores arguments as a list while the original
action='store_const' used str therefore it's needed to convert list to str
before it's sent to moduleRecords class.
Fixes:
^_^ semanage module -a
Traceback (most recent call last):
File "/usr/sbin/semanage", line 963, in <module>
do_parser()
File "/usr/sbin/semanage", line 942, in do_parser
args.func(args)
File "/usr/sbin/semanage", line 608, in handleModule
OBJECT.add(args.module_name, args.priority)
File "/usr/lib/python3.7/site-packages/seobject.py", line 402, in add
if not os.path.exists(file):
File "/usr/lib64/python3.7/genericpath.py", line 19, in exists
os.stat(path)
TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
seobject.py is not supposed to be used as entrypoint therefore the shebang is
unnecessary. It also doesn't need execute bits.
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
This method prints a usage message including the message to the standard error
and terminates the program with a status code of 2.
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
Fix gathering boolean values by fixing always False if condition
(determining whether the values are listed from local store).
Fix listing boolean values by printing the correct values and not
forcing the use of security_get_boolean_active (which causes
crash when listing booleans that are not present in active policy).
Fixes:
# dnf install selinux-policy-mls
# cat > mypolicy.cil
(boolean xyz false)
# semodule -i mypolicy.cil -s mls
# semanage boolean -l -S mls
...
irssi_use_full_network (off , off) Allow the Irssi IRC Client to connect to any port, and to bind to any unreserved port.
mozilla_plugin_use_bluejeans (off , off) Allow mozilla plugin to use Bluejeans.
OSError: No such file or directory
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Flake8 3.7.0 added a new fatal error message when parsing Python files:
python/semanage/semanage:112:16: F632 use ==/!= to compare str, bytes, and int literals
python/semanage/semanage:124:23: F632 use ==/!= to compare str, bytes, and int literals
...
python/sepolgen/src/sepolgen/output.py:77:8: F632 use ==/!= to compare str, bytes, and int literals
python/sepolgen/src/sepolgen/output.py:80:8: F632 use ==/!= to compare str, bytes, and int literals
python/sepolgen/src/sepolgen/output.py:83:8: F632 use ==/!= to compare str, bytes, and int literals
python/sepolicy/sepolicy/generate.py:646:16: F632 use ==/!= to compare str, bytes, and int literals
python/sepolicy/sepolicy/generate.py:1349:16: F632 use ==/!= to compare str, bytes, and int literals
Fix all these warnings.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Importing modules inside functions is quite uncommon in Python. This is
nevertheless required with sepolicy because it loads the current SELinux
policy when it is imported (and raises ValueError when this fails).
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
When "store" is set, sepolicy needs to load a new policy file and selinux module
needs to set the new store root path.
With this patch, semanage is able to work correctly with non-default -S <store>
even when the default policy is not installed yet.
Fixes:
$ sudo semanage login -S minimum -m -s unconfined_u -r s0-s0:c0.c1023 __default__
libsemanage.dbase_llist_query: could not query record value
OSError: [Errno 0] Error
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1558861
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
Based on idea from Nicolas Iooss <nicolas.iooss@m4x.org>
Fixes:
$ sudo semanage
Traceback (most recent call last):
File "/usr/sbin/semanage", line 28, in <module>
import seobject
File "/usr/lib/python3.7/site-packages/seobject.py", line 1045, in <module>
class portRecords(semanageRecords):
File "/usr/lib/python3.7/site-packages/seobject.py", line 1047, in portRecords
valid_types = list(list(sepolicy.info(sepolicy.ATTRIBUTE, "port_type"))[0]["types"])
File "/usr/lib/python3.7/site-packages/sepolicy/__init__.py", line 203, in <genexpr>
return ({
File "/usr/lib64/python3.7/site-packages/setools/typeattrquery.py", line 65, in results
for attr in self.policy.typeattributes():
AttributeError: 'NoneType' object has no attribute 'typeattributes'
https://github.com/SELinuxProject/selinux/issues/81
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
When MLS is disabled, "semanage export" shows records such as:
login -a -s sysadm_u -r 'None' me
Prevent "semanage export" from displaying None or empty strings in level
and categories arguments by checking them in all customized() methods.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Aliases are not used in the selinux database. When user enters a type
alias as a parameter it should be converted to the corresponding type
in order to be processed correctly further in the userspace logic.
Fixes e.g.:
\#sepolicy transition -s phpfpm_t
/* where phpfpm_t is a type alias of httpd_t */
Traceback (most recent call last):
File "/usr/bin/sepolicy", line 691, in <module>
args.func(args)
File "/usr/bin/sepolicy", line 458, in transition
mytrans = setrans(args.source, args.target)
File "/usr/lib/python3.6/site-packages/sepolicy/transition.py", line 48, in __init__
self._process(self.source)
File "/usr/lib/python3.6/site-packages/sepolicy/transition.py", line 54, in _process
trans = _get_trans(source)
File "/usr/lib/python3.6/site-packages/sepolicy/transition.py", line 36, in _get_trans
src_list = [src] + list(filter(lambda x: x['name'] == src, sepolicy.get_all_types_info()))[0]['attributes']
IndexError: list index out of range
Resolves:
\# semanage fcontext -a -t svirt_sandbox_file_t /pokus
ValueError: Type svirt_sandbox_file_t is invalid, must be a file or device type
\# semanage fcontext -d -t svirt_sandbox_file_t /pokus
ValueError: File context for /pokus is not defined
\# seinfo -tsvirt_sandbox_file_t -x
TypeName container_file_t
Aliases
svirt_sandbox_file_t
svirt_lxc_file_t
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Currently, in:
# semanage ibendport --help
usage: semanage ibendport [-h] [-n] [-N] [-s STORE] [ --add -t TYPE
-z IBDEV_NAME -r RANGE ( port ) | --delete -z IBDEV_NAME -r RANGE(
port ) | --deleteall | --extract | --list -C | --modify -t TYPE -z
IBDEV_NAME -r RANGE ( port ) ]
... a space is missing between "RANGE" and "( port )" in the usage of
--delete. Add it by splitting the string correctly in the usage line
definition.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Both "semanage user --help" and "man 8 semanage-user" state that
"semanage user" accepts option -s, but this is incorrect: -s is not
needed to specify the SELinux user on the command line, contrary to
"semanage login" for example. Fix the documention.
While at it, remove many spaces from the helptext of option --roles. I
do not know where they came from, but they were reduced to a single
space when displayed anyway.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
"except OSError, ImportError:" does not perform what it says: it is the
Python 2 syntax of catching OSError exceptions as "ImportError" (like
"except OSError, e:"), and this is indeed caught by Python3:
File "./python/semanage/seobject.py", line 143
except OSError, ImportError:
^
SyntaxError: invalid syntax
The correct syntax consists in using parentheses.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
The corresponding except clause should only be used for
exceptions caused by audit module error or unavailability.
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
Test if audit module is enabled so that logger class is defined
correctly.
Fixes:
"semanage fcontext -l" fails with "OSError: Protocol not supported" when
booting with audit=0
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
semanage_seuser_modify_local and semanage_seuser_del_local already do
the logging.
Moreover, semanage log for loginRecords.__add was flawed since it
reported old-{seuser,role,range} of default user instead of None. This
was caused by selinux.getseuserbyname, which returns values for default
user when the specified username is not found.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1294663
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
self.store is always a string (actual store name or "") because of
semanageRecords.__init__. Fix check for not defined store.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1559174#c3
Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
