The callback function would continue processing even after having failed
the SSM already. This causes further invalid operations on the SSM.
This error was found using a coverity scan.
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
The g_object_new call had a NULL argument for a property. This meant
that the compiler could not warn about the lack of NULL termination for
the argument list.
Add the missing NULL termination.
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.
This was added as alias to the error check, but given we're passing to the
callback both the error and the match itself, we can just avoid adding an
extra parameter that could be confusing (as may imply that the matching
happened).
Also clarify the documentation and ensure that the match value is properly
set in tests.
We were not testing the image device error reporting functions yet
inside libfprint (fprintd already had such tests). Add tests to make
sure we catch errors earlier.
It is a good idea to report match results early, to e.g. log in a user
immediately even if more device interaction is needed. Add new _full
variants for the verify/identify functions, with a corresponding
callback. Also move driver result reporting into new
fpi_device_{identify,verify}_report functions and remove the reporting
from the fpi_device_{identify,verify}_complete calls.
Basic updates to code is done in places. Only the upekts driver is
actually modified from a behaviour point of view. The image driver code
should be restructured quite a bit to split the reporting and only
report completion after device deactivation. This should simplifiy the
code quite a bit again.
Some things were odd with regard to the ownership of passed objects. Try
to make things sane overall, in particular with the possible floating
FpPrint reference.
The progress report user data free func was not assigned and therefore
never called. Add the missing assign, potentially fixing memory leaks
(mostly relevant for bindings).
Just hiding tests that cannot be run does not seem like the best idea.
So add dummy tests that are skipped, to denote that we could test more
than we actually do (even if it is just for drivers that are not
enabled).
Unfortunately, the timeout handling cannot be simulated properly. This
also adds a workaround in the driver to not consider it a protocol error
if this happens.
Continuing an enroll was broken in case of a retry error. Explicitly add
code to wait for the finger to go OFF after a retry error, and ensure
that the enroll will continue once that has happened.
We cannot copy information from the class in the _init routine, instead,
this needs to be done in _constructed. Move the relevant code into a new
_constructed function to fix importing the bz3_threshold override from
drivers.
Fixes: #206
The offset stored for a frame was not always relative to the previous
frame. This was the case for reverse movement, but for forwrad movement
the offset was the one to the next frame.
Make the offset handling consistent and alwasy store the offset to the
previous frame. Also update the frame assembling code to add the offset
before blitting the frame (i.e. making it relative to the previous frame
there too).
Note that fpi_assemble_lines already made the assumption that this was
the case as it forced the offset for the first frame to be zero. As
such, the code was inconsistent.
This could affect the AES drivers slightly as they use hardware reported
values which might not adhere to these assumptions.
