We used to return early in the case where the print matched in order to
report the result more quickly. However, with the early reporting
mechanism and the fprintd side implementation of it, this is not
necessary anymore.
As such, only stop the "verify" and "identify" operations when the
finger is removed (or the operation is cancelled, which is actually what
will happen currently).
It is easier (and more correct) to create a new print from the reported
data and match that against the prints in the gallery.
We continue to return NULL during verify as we cannot provide any
additional information in that case.
NBIS just does weird things and while the array-parameter warning is
easy to fix, the other is not trivial. So disable these warnings so that
we can still build using newer GCC versions.
The gallery needs to be copied, as such we must do a deep comparison
instead of comparing the pointers. We also can't do the comparison
afterwards, as the gallery is owned by the operation and that operation
is finished already.
This function was always documented to return a sunk reference, but it
did not do so. This change is technically backward incompatible.
However, it only has an effect if anything is doing a g_object_ref_sink.
Which may happen inside libfprint itself. With the change, most API
users (including fprintd) are fixed to do refcounting correctly. Any API
user which worked around this will have a memory leak now.
That is not ideal, but it is not really that bad overall. And returning
a floating reference for FpPrint creation was a bad idea in the first
place. And it really only makes sense for fp_print_new as the only
(public) use case is to create the template for enrollment.
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
This tests all relevant scenarios of device removal, i.e.:
* device is not open
* device is currently closing
* device is open and idle
* device is currently opening
* device is open and active
The test ensures that in all scenarios the following holds true:
* device "removed" signal is only emitted after the action completes
* context "device-removed" signal is only emitted after the device has
been closed
Note that the "opening" case is special. Here we confirm that a success
from "open" will not be overriden by a FP_DEVICE_ERROR_REMOVED error, in
order to correctly signal that the internal device state is open and it
needs to be closed.
In general, we rely on the underlying transport layer to throw errors
which will abort the current operation. This does not work for the
virtual image device though, but we need it there for testing purposes.
Add a notify::removed handler that makes things work as expected. Let it
throw a protocol error which should not be visible to the outside.
We require the close call, but as the underlying transport layer is
gone, it will generally just return an error.
In principle, it makes sense to think of close as a function that always
succeeds (i.e. it makes no sense to try again). Should the device be in
a bad state, then a subsequent open() will simply fail.
