Each command should be separated by SLEEP to be considered as something
we want to perform during the current operation, otherwise will be used
by next operation consuming it.
In case we sent a sleep event to the device we may want to wait it to
emit the finger needed state before the timeout is completed.
So add a function to manage this for all the scan cases
The irq handler may already be stopped if stop_irq_handler is called. In
that case, we should immediately call the handler rather than just never
calling it.
This fixes deactivation when the device is unexpectedly unplugged.
Closes: #355
While meson suggests to always use 'library' this leads to some unwanted
behaviors when it comes to generate pkg-config files for it, as they
will include `Libs.Private` / `Required.private` fields that should not
be really part of a shared library as libfprint is meant to be used.
There are two variants one with storage and identify support and the
other without storage.
It implements the following commands:
* INSERT id
* REMOVE id
* SCAN id
* ERROR error-code
* LIST (returns saved print)
The INSERT/REMOVE/LIST commands are only available in the storage
driver. The SCAN command emulates presenting a finger.
These commands can be send ahead of time, and will be queued and
processed when appropriate. i.e. for INSERT/REMOVE that is immediately
when possible, for SCAN/ERROR processing is delayed.
The LIST command is always processed immediately.
Note that only a single command can be send per socket connection and
the command must be send in a single message. The socket will be closed
after the command has been processed.
Co-authored-by: Bastien Nocera <hadess@hadess.net>
Co-authored-by: Marco Trevisan (Treviño) <mail@3v1n0.net>
Instead of repeating the same code in both the virtual-image and the
virtual-device drivers, implement a class to handle the socket listening
an data reading.
Co-authored-by: Marco Trevisan (Treviño) <mail@3v1n0.net>
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
The change to print a warning (for testing purposes) from commit
944e0d0383 (udev-rules: Print warning if an ID is supported) was
incorrect because it prevented duplicated to be suppressed if a device
is listed by two independent drivers.
