This solves various problems:
1. It stays the same also if some drivers have been disabled
2. It uses a stable path for being imported by systemd
3. It is still checked for its validity by tests
4. It can be auto-generated using a simple command
When building in big endian architectures some device tests will fail,
as per this we're pretty sure that most of the drivers are not ready
to work in big-endian architectures.
Since we're aware of this, better to just stop supporting those drivers
instead of having each distribution to handle the problem.
So, add a list of supported drivers that is filled depending the
architecture type we're building on. Keep continue building those
drivers since we want to at least test-build them, but do not expose
them as libfprint drivers, so if a device in the system uses any of them
will be ignored.
At the same time, we keep track of the problem, so that we can fix the
drivers.
Related to #236
When serializing an image print in big endian machine we ended up
swapping the arrays contents two times, first when adding the values and
eventually when calling g_variant_byteswap which already handles this
properly.
With this, we get the test passing into s390x.
Fixes: #236
Identify function is supposed to propagate a boolean value, but we make
it return an integer instead on idle, this can be normally the same in
most of architectures, but not in BE ones.
So, make it return the proper type.
Fixes test failures in s390x.
Related to #236
Some devices have storage but that's is limited enough not to be able
to store all the metadata, but just a fingerprint id.
In such case we also need to use the local storage to be able to verify.
Fprintd does this already, but we don't do it in the libfprint examples.
So, in in case we enroll, always save the print information to the disk,
while in case we verify we try to load the print from disk and we use
that in case its private data matches the one provided by the device.
While the image device has its own finger status tracking, we use a simpler
version as public data information, so let's just report the finger-on/off
and when a finger is expected to the parent class.
Verify that this happens as expected using the virtual-image class
Image devices may return a FP_DEVICE_ERROR_NOT_SUPPORTED error once capture
is already started, in such case handle the error going in non imaging mode
If we fail when setting the scanned image to a print, we'll have a fatal
error, in such case we can terminate the current action and deactivate the
device.
In some cases nbim's get_minutiae returns no minutiae without providing an
error code, and if this happens we would crash in the task callback function
as we would try to deference the data->minutiae pointer.
Related to: #251
If the image height is less than the sensor horizontal resolution, then
return a retry error rather than trying to submit the image for further
processing.
Related to: #251
During verify/identify complete we replace the error pointer that the driver
returned with another error we created, after clearing that one.
However, when we initialize a new error the compiler may reuse the same
allocation of the cleared one, and this might lead to a test failure.
So, don't be so fragile and ignore the pointer check
The unittest_parser script would try to import FPrint gi module, but it
would fail as per the fact that none is installed yet, so make sure that
we don't load any FPrint module until we try to actually run the tests
Devices with no storage don't allow listing prints, and if we try to do
that, we'd end up in trying to call a NULL function pointer, causing a crash
So always check if the device has storage before calling the list vfunc, and
if we fail, return an error.
Include an unit-test to verify this situation
To avoid conflicts with previous libfprint version and make sure that the
target version is the correct one (plus to allow parallel install in some
distros), let's use a versioned naming for the library keeping the abi
version in sync.
Fixes#223
When quickly scanning a finger with the synaptic driver, it may wait forever
for finger removal even if this has already happened.
In fact we don't take care of the finger status when reporting the
verification.
To avoid this, add a function that delays the completion of the verification
until the finger removal if the finger is on sensor, otherwise it just
performs it.
Fixes#228
Remove the never-used cmd_complete_data value and the repetition of
cmd_complete_error.
In fact now as per the fpi_device_verify_report() usage, we already pass
the match information to the device, such as the error and it will be
they will be used on completion if needed.
This allows to simplify cmd_ssm_done() as well.
In some cases we want to complete the verification after that the finger has
been removed, but we still need to promptly report the match state otherwise
fpi-device will complain about, and will eventually cause a match error
instead that reporting a non-match:
synaptics: Finger is now on the sensor
synaptics: Received message with 0 sequence number 0x91, ignoring!
synaptics: interrupt transfer done
synaptics: delaying match failure until after finger removal!
synaptics: interrupt transfer done
device: Driver reported successful verify complete but did not report the
result earlier. Reporting error instead
libfprint: Failed to verify print: An unspecified error occured!
Fixes#227
Promptly show the match/no-match result in the match callback instead of
waiting the verification process to be finished.
Also exit in case of an hard error, while permit to try again in case of a
retry error.
