struct xyt_struct uses a fixed-sized array to fit MAX_BOZORTH_MINUTIAE (200)
minutiae. MAX_FILE_MINUTIAE is 1000. So if we detected more than
MAX_BOZORTH_MINUTIAE, we would crash copying the data from the capture
to the structure.
We might want to use dynamically allocated arrays in the future (or
bigger ones) so that we don't lose minutiae.
Closes: #116
The checks weren't:
- checking whether the width or height were negative
- whether img->width * img->height would overflow, or
was bigger than G_MAXINT
- whether img->width * img->height was bigger than the total
length of the buffer
The last one looks like a thinko, it checked for:
(img->length * img->height) < img->length
which is equivalent to:
img->height < 1
which we already check for earlier.
Closes: #85
Add fp_minutia_get_coords() so that debugging applications can show the
detected minutiae along with the captured image.
This will also help fix the positively ancient fprint_demo.
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907470
