Bug#771191: lintian: test for inclusion of non-lossy lena/lenna image and flag as potentially non-DFSG
Package: lintian
Version: 2.5.30+deb8u2
Severity: wishlist
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A graphics file popular to include e.g. in testsuites is a scanning from
November 1972 issue of Playboy, which is not DFSG compliant:
<https://en.wikipedia.org/wiki/File:Lenna.png#Licensing>.
See bug#771126 for a concrete example. I have tried our codesearch to
discover more, and have found some but failed to find a reliable search
pattern using that interface.
It is used for color calibration and therefore needed in non-lossy
format but can vary in size and serialization, so simple md5 detection
is inefficient, I suspect.
Filename typically includes "lena" or "lenna" in its stem.
A simple check could be scan for /\blenn?a\b/ in filename, and then
check with "file" if content is a graphics file.
More reliable check might involve serializing hits of above loose check
in some deterministic manner, compute md5 from that, and compare against
a blacklist.
- Jonas
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