Simulate the case in which multiple users are trying to access a device
at the same time, verifying that the access is granted only to the one
that first completes the authorization phase and that no other client is
then allowed.
Added various methods that allow to make methods to delay to return a
value, both by using timing functions and using a way to manually
stop and restart the calls.
This is mostly done using async callbacks in dbus methods
We need to be able to hack this to be an async daemon to perform some
multi-thread tests, so replacing default implementation with a simple
one that for now just does same of default
Fprintd is dependent on the deprecated dbus-glib, also this doesn't provide
various features we can take advantage of, like the ones for async
authentication mechanism.
So, remove all the dbus-glib dependencies and simplify the code, but without
any further refactor, and keeping everything as it used to work, while this
will give room for further improvements in subsequent commits.
Internally, we just use dbus-codegen to generate the skeletons, and we
use the generated FprintdDBusManager with composition, while we
implement the device skeleton interface in FprintDevice, so that we
don't have to use it as a proxy, and keep being closer to what it used
to be with dbus-glib.
Fixes: #61
fprintd supports "any" finger parameter for the VerifyStart call, and it's
up to the daemon to pick the first known if the device doesn't support
identification.
So remove the check to verify utility and add a test to verify this is
respected.
This avoids addCleanup ordering errors and also errors when we may try to
print an invalid stdout pipe (like when we have processed it all), as python
might fail with something like:
======================================================================
ERROR: test_fprintd_multiple_verify_fails (__main__.TestFprintdUtilsVerify)
----------------------------------------------------------------------
Traceback (most recent call last):
File "~/GNOME/fprintd/tests/test_fprintd_utils.py", line 102, in <lambda>
self.addCleanup(lambda: print(process.stdout.read()))
File "/usr/lib/python3.8/codecs.py", line 321, in decode
data = self.buffer + input
TypeError: can't concat NoneType to bytes
unittest addCleanup calls are called in reverse order, so we need to reverse
the order of the calls as well, otherwise we won't correctly terminate the
subprocess children
No need to repeat the action in every unit test, but move the tests to a
different class to easily allow adding another class with tests with no
such initialization
An assertion that is raised within a callback will not be swallowed by
the C code that called the function. To ensure that errors will be
noticable, pass the result back to the surrounding scope and check it
there.
This excercises the path where we early-report a result and the
VerifyStop call must wait for the operation to complete intenernally.
Note that this test cannot fail right now due to the FpImageDevice
internal code still trying to hide the deactivation delay internally.
See libfprint!174
An application terminating because of a signal like SIGSEGV, SIGABRT and
friends, will exit with a signal number that is 128 + $SIGNAL_NUMBER, so
let's ensure that the daemon has not been terminated because of a such error
This makes even more sense with address sanitizer builds, as the daemon
would exit with abort.
Make possible to run tests with address sanitizer to quickly check for
memory errors, although we have to disable the error exit code in case of
leaks because we have some which are due to something else down in the stack
(and LSAN suppression files doesn't allow to define the stack to ignore
as we can in valgrind).
However, we'd abort in case of memory errors anyways, so this still helps
to prevent major problems, while still logging the leaks.
In order to run pam module tests with ASAN we need to manually pass the
library to LD_PRELOAD, as we do for the wrapper.
In order to run pam module tests we need to pass the libraries via
LD_PRELOAD, this supports a list of library paths, so use the compiler in
order to find their full paths (with soname) and check their presence.
In order to support linker scripts we need to introduce a workaround.
See meson issue https://github.com/mesonbuild/meson/issues/6880
The test doesn't need any assertion because we're calling DeleteEnrolledFingers
and in case it fails a net.reactivated.Fprint.Error.PermissionDenied error
would be thrown, and thus an exception would be raised at python level, making
the test to fail.
test_claim_from_other_client_is_released_when_vanished would fail on
the CI but work on a local system because we wouldn't want long enough
for the "vanished" code path to be taken into account. Add a small
timeout to make sure it works on the CI as well.
enroll_image() was always waiting for enroll-completed rather than for
what the caller expected as the result.
======================================================================
FAIL: test_enroll_invalid_storage_dir (__main__.FPrintdVirtualDeviceClaimedTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/hadess/Projects/jhbuild/fprintd/tests/fprintd.py", line 661, in test_enroll_invalid_storage_dir
self.enroll_image('whorl', expected_result='enroll-failed')
File "/home/hadess/Projects/jhbuild/fprintd/tests/fprintd.py", line 384, in enroll_image
self.wait_for_result('enroll-completed')
File "/home/hadess/Projects/jhbuild/fprintd/tests/fprintd.py", line 373, in wait_for_result
self.assertEqual(self._last_result, expected)
AssertionError: 'enroll-failed' != 'enroll-completed'
- enroll-failed
+ enroll-completed
We run a certain number of tests right now, without being able to easily
run them separated or to check which one failed.
So add a script to inspect all the available unittests per each python
script and use it to figure out the tests we can run in meson.
As per this, define a global 'python_tests' variable in meson that allows
to register new python tests easily without having to repeat the settings
for all the tests.
For each test we have, we check if we can fetch a list of unit tests, and
if possible we create a meson test for each one.
Otherwise we just fallback to normal behavior.
This is something that can be hopefully implemented into upstream meson [1].
[1] https://github.com/mesonbuild/meson/issues/6851
The unit tests files are provided as python files, adding a tool that
allows to list them in order to be able to run them easily via
python3 -m unittest module.Class.test_method
The test file calls self.daemon_start() in order to start fprintd and
locate the virtual image device that's needed for the test to run.
However, since the virtual image driver is not available on all
libfprint installations, the test should be skipped if the driver is not
available.
The skipping mechanism used to work, by checking if self.device is None.
This is based on the assumption that self.device would be set to None in
cases where the driver is not available. However, even in the past
self.device is only set to None in the tearDown method and not in setUp,
so presumably in edge cases it didn't entirely work.
However, since 0fb4f3b021 which
consistently removes the self.device attribute rather than setting it to
None, the "self.device is None" check no longer works. In particular,
the following error message is shown:
test_manager_get_default_device (__main__.FPrintdManagerTests) ...
Did not find virtual device! Probably libfprint was build without
the corresponding driver!
ERROR
After this patch, the following is shown:
test_manager_get_default_device (__main__.FPrintdManagerTests) ...
Did not find virtual device! Probably libfprint was build without
the corresponding driver!
skipped 'Need virtual_image device to run the test'
We fix this bug by consistently setting self.device to None, in both the
setUp method before daemon_start gets called, and in tearDown. We also
make the same change to self.manager for consistency.
The issue was not caught on CI, as the CI configuration always installs
a libfprint version that has the virtual_image device explicitly enabled
in the preparation phase.
Avoid using a temporary file for reading the utilities output, so we can
read it as it comes, ignoring the previous one, and avoiding open/closing
the file.
To keep the output printing on cleanup working, adding an utility function
that reads the output and save it for later printing
