Function delete() is defined twice in class usersPage and the first one
invoke semanagePage.delete(), which does not exist.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
The output of "semodule -lfull" changed from "module version" to
"priority module kind". Update system-config-selinux to use this new
format in its tab "Policy Module".
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Several "sepolic gui" tabs raise exceptions when using a policy without
MLS because some dictionaries describing users and logins lack level and
range properties. Use conditions and get() where appropriate in order
to make "sepolicy gui" usable again with a non-MLS policy.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
In refpolicy, file_contexts.subs_dist begins with comments:
# This file can is used to configure base path aliases as in:
#
# /aliased_path /original_path_as_configured_in_file_contexts
#
The first line gets parsed in read_file_equiv even though it is not a
valid path substitution and the second line triggers an exception when
accessing f[1]:
IndexError: list index out of range
Parse substitutions only for lines which are not comment.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
The latest update to Travis-CI build environment splitted sugilite
environment into amethyst and garnet and deprecated sugilite. As garnet
provides tools for languages C and Python, and as it is automatically
selected according to
https://travis-ci.org/fishilico/selinux/jobs/278927391 , remove "group:
sugilite" from Travis-CI configuration file.
This update introduced two issues:
- Ruby 2.1 is no longer provided. As it has reached End Of Life
according to https://www.ruby-lang.org/en/downloads/, remove it from
the tested versions
- Python 3.3, 3.4 and 3.5 are no longer installed by default. When
Travis-CI builds Python projects using these versions, it
automatically download and extract an archive from
https://s3.amazonaws.com/travis-python-archives/binaries/ubuntu/14.04/x86_64/.
Implement this process in .travis.yml directly (because Travis-CI does
not support multi-language projects which use several versions of C
compilers and Python and Ruby interpreters).
Last but not least, it is now possible to build with PyPy3. Enable this
interpreter in the build environment matrix.
More information about the Travis-CI update is available at
https://docs.travis-ci.com/user/build-environment-updates/2017-09-06/
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
PyGTK has been deprecated in favor of PyGI+GTK and thus has never been
ported to python3. Using pygi-convert.sh from
https://git.gnome.org/browse/pygobject/tree/pygi-convert.sh helps
migrating most of the API but gnome-python.
The glade file has been converted to GtkBuilder using
gtk-builder-convert system-config-selinux.glade system-config-selinux.ui
and some fixes in order to provide an application window (object
GnomeApp disappeared, GtkVBox is deprecated, etc.). The associated
Python code also needed some modifications in order to migrate to
GtkBuilder.
The result has been tested on Arch Linux with Python 3.6. There are some
bugs in the GUI itself, for which patches will be sent afterwards.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
On a system without any file context customizations, "sepolicy gui"
fails to load because it tries to read a non-existing file:
FileNotFoundError: [Errno 2] No such file or directory:
'/etc/selinux/refpolicy-git/contexts/files/file_contexts.local'
Once this issue is fixed, another one is triggered:
FileNotFoundError: [Errno 2] No such file or directory:
'/etc/selinux/refpolicy-git/contexts/files/file_contexts.subs
Use try/except to catch these exceptions and use OSError/errno.ENOENT to
keep the code compatible with Python 2.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
When sepol_bool_query() returns NULL response, variable name is not
freed. Fix this by calling free() before returning.
Signed-off-by: Jan Zarsky <jzarsky@redhat.com>
When building the project with "make DESTDIR=... install", the root
Makefile defines CFLAGS and LDFLAGS without any warning flags ("CFLAGS
+= -I$(DESTDIR)/usr/include" and "LDFLAGS += -L$(DESTDIR)/usr/lib"). As
the Makefiles in subdirectories do not override the flags with warning
flags, the code gets compiled without any enabled warning.
This leads for example to code being introduced which breaks building
libsepol from its directory, while building it from the root Makefile
still works fine.
This issue can be fixed by defining a set of flags in the root Makefile
which are used by all Makefiles in subdirectories. The flags have been
chosen following these principles:
* they are compatible with both clang and gcc,
* they already appear in at least one Makefile, and
* they are not triggered with the current git master version.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
When compiling restorecond with -Wunused, gcc 4.8.4 (from Ubuntu 14.04)
reports the following warnings:
restorecond.c: In function ‘main’:
restorecond.c:208:9: error: ignoring return value of ‘daemon’,
declared with attribute warn_unused_result [-Werror=unused-result]
daemon(0, 0);
^
restorecond.c: In function ‘write_pid_file’:
restorecond.c:106:2: error: ignoring return value of ‘write’,
declared with attribute warn_unused_result [-Werror=unused-result]
(void)write(pidfd, val, (unsigned int)len);
^
If any of these calls returns an error, it is currently silently
discarded. Add a message in order to warn about such an error.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
cil_gen_node() has been using its argument "db" since commit
fafe4c212b ("libsepol: cil: Add ability to redeclare
types[attributes]"). Drop attribute "unused" on this argument.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
cil_defaults_to_policy() defines its third argument as non-const "char
*kind" even though it is called with literal strings. This makes gcc
report the following warning when compiling with -Wwrite-strings:
../cil/src/cil_policy.c: In function ‘cil_gen_policy’:
../cil/src/cil_policy.c:1931:60: error: passing argument 3 of
‘cil_defaults_to_policy’ discards ‘const’ qualifier from pointer
target type [-Werror=discarded-qualifiers]
cil_defaults_to_policy(out, lists[CIL_LIST_DEFAULT_USER],
"default_user");
^~~~~~~~~~~~~~
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Since commit 67b410e80f ("libsepol/cil: Keep attributes used by
generated attributes in neverallow rules") gcc reports the following
warning when building libsepol:
../cil/src/cil_post.c: In function
‘__cil_post_db_neverallow_attr_helper’:
../cil/src/cil_post.c:1322:17: error: unused variable ‘db’
[-Werror=unused-variable]
struct cil_db *db = extra_args;
^~
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
When compiling libsepol with clang and some warning flags, the compiler
complains about the way IPv6 addresses are initialized:
kernel_to_cil.c:2795:35: error: suggest braces around initialization
of subobject [-Werror,-Wmissing-braces]
struct in6_addr subnet_prefix = {0};
^
{}
When replacing the initializer as suggested, gcc 4.8.4 complains:
kernel_to_cil.c: In function ‘write_selinux_ibpkey_rules_to_cil’:
kernel_to_cil.c:2795:9: error: missing initializer for field
‘__in6_u’ of ‘struct in6_addr’ [-Werror=missing-field-initializers]
struct in6_addr subnet_prefix = {};
^
Thankfully netinet/in.h provides a macro to initialize struct in6_addr
variables:
#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
Both clang and gcc no longer report warnings when using this macro.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
In order to reduce policy size, CIL removes attributes that are not used
by a policy rule in the generated binary policy. However, CIL keeps
attributes used by neverallow rules (which are checked at compile time
and not in the binary policy) even if the attribute is not used anywhere
else in the policy. This behavior is useful to Google who pulls neverallow
rules out of the original policy.conf for compatibility testing, but
converts the policy.conf to CIL and uses the CIL compiler to generate
policy. Without this behavior, the generated binary policy might not have
an attribute referred to by one of the neverallow rules used for testing.
The one exception to this behavior is for attributes generated in
module_to_cil (these have an "_typeattr_" in the middle of their name).
Since these attributes are only created because CIL does not allow a
type expression in an AV rule, they are removed if they only appear in
a neverallow rule (which is the case for most of them) or if the
option to expand generated attributes (-G or --expand-generated) is
specified for secilc when compiling the policy.
Removing generated attributes causes a problem, however, if the type
expression that the generated attribute is replacing uses an attribute
that is removed. In this case, the original neverallow rule will refer
to an attribute that does not exist in the generated binary policy.
Now any non-generated attribute used in a typeattributeset rule for a
generated attribute which is used in a neverallow rule will be treated
like it was used in a neverallow rule.
This does not change the behavior of an expandtypeattribute rule for
the attribute. That rule, if it exists, will take precedence.
Signed-off-by: James Carter <jwcart2@tycho.nsa.gov>
Modify cil_gen_node() to check to see if the cil_db supports multiple
declarations, and if so, to check whether or not the
repeated symbol is eligible to share the existing, already-stored datum. The
only types considered so far are CIL_TYPE and CIL_TYPEATTRIBUTE, both of
which intall empty datums during AST building, so they automatically return
true.
Test: Build policy with multilpe type and attribute declarations, and
without. Policies are binary-identical.
Signed-off-by: Dan Cashman <dcashman@android.com>
Signed-off-by: James Carter <jwcart2@tycho.nsa.gov>
In cil_strpool_destroy(), cil_strpool_tab is freed but it is not reset to NULL.
When cil_strpool_init() is called again it assumes that cil_strpool_tab was
already initialized. Other functions then work with invalid data.
Signed-off-by: Jan Zarsky <jzarsky@redhat.com>
"roleattribute" was referencing "typeattributeset", but I believe it should be referencing "roleattributeset" instead.
Signed-off-by: James Carter <jwcart2@tycho.nsa.gov>
The space after "sepolicy(8)" breaks the formatting of section SEE ALSO
in man pages generated with sepolicy:
SEE ALSO
selinux(8), ssh(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8),
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
This prevents the following exception to occur when using "sepolicy
manpage":
Traceback (most recent call last):
File "/bin/sepolicy", line 699, in <module>
args.func(args)
File "/bin/sepolicy", line 359, in manpage
m = ManPage(domain, path, args.root, args.source_files, args.web)
File "/usr/lib/python3.6/site-packages/sepolicy/manpage.py", line 459, in __init__
self.__gen_man_page()
File "/usr/lib/python3.6/site-packages/sepolicy/manpage.py", line 548, in __gen_man_page
self._mcs_types()
File "/usr/lib/python3.6/site-packages/sepolicy/manpage.py", line 978, in _mcs_types
mcs_constrained_type = next(sepolicy.info(sepolicy.ATTRIBUTE, "mcs_constrained_type"))
StopIteration
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
"sepolicy manpage" fails when the system does not use MLS because
using x.context.range_ raises an exception. Avoid using range and levels
when _pol.mls is False.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
When "sepolicy manpage" generates descriptions for file type, it uses a
mispelled _ra_content_t suffix for prettyprinting, which results in an
unwanted double-space on the line.
For example sepolicy manpage -d httpd_t produces:
.EX
.P
.B httpd_apcupsd_cgi_ra_content_t
.EE
- Set files with the httpd_apcupsd_cgi_ra_content_t type, if you
want to treat the files as httpd apcupsd cgi read/append content.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
When running "sepolicy manpage" on a system without file_contexts.local,
the command fails with:
FileNotFoundError: [Errno 2] No such file or directory:
'//etc/selinux/refpolicy/contexts/files/file_contexts.local'
Verify that the file exists before using it.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Commit c624c4abaa ("sepolicy: Fix syntax errors in 'manpage -w'")
missed an occurence of print statement. While at it, fix self.os_version
test.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
clang does not know -fuse-ld=gold. It only needs -flto, which
automatically adds -plugin=LLVMgold.so to the linker command line, but
this does not work on Travis-CI because the gold linker plugin is not
installed:
/usr/bin/ld: /usr/local/clang-3.9.0/bin/../lib/LLVMgold.so: error
loading plugin: /usr/local/clang-3.9.0/bin/../lib/LLVMgold.so:
cannot open shared object file: No such file or directory
Disable in the build matrix the combination of linking with special
linkers with using clang.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Define the nnp_nosuid_transition policy capability used to enable
SELinux domain transitions under NNP or nosuid if the
nnp_transition permission or nosuid_transition permission is
allowed between the old and new contexts. When this capability is not
enabled, such transitions remain limited to bounded transitions as they
were prior to the introduction of this capability.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
SETools4 and Python 3 versions of map() and filter() uses iterators to
generates query results and these iterators can't be imply re-used. It
makes manpage and transitions operations really slow as they do lot of queries.
This patch changes it in the way that it caches results in lists for all
types, allow rules and transitions first and use cached results to
filter them using Python's filter() function.
Before:
$ time sepolicy manpage -d httpd_t sshd_t init_t
real 0m53.486s
user 0m53.171s
sys 0m0.054s
After:
$ time sepolicy manpage -d httpd_t sshd_t init_t
real 0m10.532s
user 0m10.368s
sys 0m0.114s
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
Fixes:
File "python/sepolicy/sepolicy/manpage.py", line 373, in _gen_css
print("%s has been created") % style_css
TypeError: unsupported operand type(s) for %: 'NoneType' and 'str'
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
There are two problems with lookup_common() and therefore
selabel_lookup() and related functions that this patch fixes:
1) A race with the lazy compilation of regexes. Since the struct
regex_data is allocated and assigned immediately to the parent struct
spec, it's possible for a second thread to see that this pointer is
non-NULL before the regex compilation has finished. This typically
results in a -1 return from selabel_lookup() with ENOENT as errno.
This is fixed by adding synchronization in compile_regex().
2) A race with PCRE2 regex_match(). A struct pcre2_match_data is
created once and used for all regex matches for a given regex. This
is problematic if two threads are attempting to evaluate the same
regex simultaneously. This typically results in a successful return
from selabel_lookup() but with an erroneous selabel.
This is fixed by adding a pthread_mutex within regex_match() for
PCRE2. Note, on my system, creating new matchdata takes roughly an
order of magnitude more time than locking a non-contended
pthread_mutex. I don't believe programs will have enough contention
on this lock to justify that cost.
Bug: 63861738
Test: ueventd unit tests
Change-Id: I13bf782d81d0a0b896d444e396f307ad0dbacb6a
Making stdin/stdout non-blocking causes open_init_pty to hang if
they are closed, ala
./open_init_pty bash -c 'echo hello; exec >&- 2>&- <&-; sleep 1; '
and per
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=474956#10
This reverts commit fb081eb64b.
Reported-by: Laurent Bigonville <bigon@debian.org>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
PYTHONLIBDIR is currently also used in sepolgen but has a different
behaviour regarding DESTDIR. Let's try to make this consistant.
Signed-off-by: Laurent Bigonville <bigon@bigon.be>
Some Makefiles rely on adding values to variables like CFLAGS,
LDFLAGS, etc. For example doing "LDFLAGS += -L../src" does not work fine
when LDFLAGS is defined on the command line of "make".
Commits 297877ab88 ("libselinux utils: override LD{FLAGS, LIBS} for
libselinux.so in Makefile") and 15f2740733 ("Makefiles: override
*FLAGS and *LIBS") recently fixed such issues, by introducing keyword
"override" in the relevant Makefile statements.
In order to prevent the fixed issues from appearing again, add a test
case in Travis-CI configuration file. This case adds on make's command
line minimal definitions for CFLAGS and LDFLAGS and empty definitions
for CPPFLAGS and LDLIBS.
An example of build failure due to a missing override in a required
CPPFLAGS addition is provided on
https://travis-ci.org/fishilico/selinux/builds/245107609
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
A build toolchain may override CPPFLAGS on the command line of "make".
Doing so currently breaks libsepol/tests compilation, as it requires
"-I../include/ -I$(CHECKPOLICY)" to be provided in gcc's arguments.
This completes commit 15f2740733 ("Makefiles: override *FLAGS and
*LIBS").
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Travis-CI no longer provides Ruby 2.0 in its Trusty environment (it has
been updated according to
https://blog.travis-ci.com/2017-06-21-trusty-updates-2017-Q2-launch).
Remove this version from .travis.yml.
Moreover Python 3.6 and Ruby 3.4 are available. Test building with them.
Last by not least, pypy virtual environment directory has been renamed
pypy2 (/home/travis/virtualenv/pypy2 is a symbolic link to pypy2-5.6.0).
The updated .travis.yml file has been tested on
https://travis-ci.org/fishilico/selinux/builds/248126824
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
The RUBYLIBS definition introduced by commit f5b9bc2a06
("libselinux,libsemanage: link Ruby wrappers with -lruby") did
not work on Debian. Fix it based on a patch by Nicolas Iooss.
Reported-by: Laurent Bigonville <bigon@debian.org>
Suggested-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
The `getpwent_r` function is a non-standard but reentrant version of the
POSIX-defined `getpwent` function. While it should provide the benefit
of being safe to use in multi-threaded environments, it disallows us
from compiling with libc implementations which stick to the POSIX
standard more closely.
As libsemanage may be used in a multi-threaded environment, being
reentrant may in fact be quite important to us. As such, simply
switching out `getpwent_r` against its non-reentrant function can prove
quite dangerous. But interestingly enough, the glibc implementation of
`getpwent_r` does not even guarantee being reentrant. Quoting from
getpwent_r(7):
NOTES
The function getpwent_r() is not really reentrant since it shares
the reading position in the stream with all other threads.
As such, it is non-reentrant in the same sense as its simple `getpwent`
brother and can simply be switched out without losing any guarantees
here.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Nicolas Iooss
Jan Zarsky
James Carter
Dan Cashman
Stephen Smalley
Grégoire Colbert
Petr Lautrbach
Tom Cherry
Dan Cashman
Laurent Bigonville
Patrick Steinhardt