Use bounded uid strings for template-info handling.
- stop printing fixed-size device buffers with raw %s
- use g_strndup(..., TEMPLATE_UID_SIZE) before logging tpl_info.uid
- compare delete target uid against the bounded copy
- log handshake response as bytes instead of %s
This avoids over-read/invalid-UTF8 issues when unknown/corrupted entries
contain non-NUL or 0xff-filled uid data.
The Elan 04f3:0c58 sensor returns 0xaf during capture which indicates
finger removed or sensor busy. Also 0x00 can occur meaning not ready.
These responses should trigger a retry instead of failing.
To avoid changing behavior for other Elan devices, limit the new retry
logic to the 0x0c58 device type and add a small 10ms delay between
retries.
Additionally, increase calibration attempts from 10 to 30 for 0x0c58
as this sensor needs more time to complete calibration.
Source: https://gitlab.freedesktop.org/libfprint/libfprint/-/work_items/763
Signed-off-by: lichenggang <lichenggang@uniontech.com>
Co-Authored-By: Marco Trevisan (Treviño) <mail@3v1n0.net>
Add support for the SecuGen Hamster Pro 20 (1162:2200), a 500 DPI
press-type optical scanner built around the SIDO020A sensor.
The protocol was reverse-engineered from USB packet captures. The
sensor is configured over I2C-tunneled vendor control transfers and
streams 956x688 raw frames over the bulk endpoint, read in 64KB
chunks so the standard pcap-based test tooling can record full
frames (the kernel usbmon interface truncates single URBs at
ring_size/5). Frames are processed with band compensation, an
edge-aware unsharp mask, a fixed-point bilinear downsample to
300x400, flat-field blending and directional sharpening, driven by
per-device factory calibration data read from the device firmware.
The fixed-point pipeline keeps the output bit-identical across
compilers and architectures for the image comparison test.
The sensor has no proximity hardware and its GET_STATUS request
always returns zeros, so finger presence is detected by polling
preview frames and comparing the mean brightness of the central
region against a calibration background frame.
Includes a umockdev capture/replay test with a reference image.
Closes: https://gitlab.freedesktop.org/libfprint/libfprint/-/work_items/353
Fixes the CI test_scan_build
libfprint/drivers/fpcmoc/fpc.c:275 — [deadcode.DeadStores]
warning: Value stored to 'data' during its initialization is never read
CommandData *data = fpi_ssm_get_data (ssm);
Signed-off-by: Daniel Schaefer <dhs@frame.work>
