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+# files/licenses -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, you can find it on the World Wide
+# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+package Lintian::Check::Files::Licenses;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+sub visit_installed_files {
+ my ($self, $item) = @_;
+
+ # license files
+ if (
+ $item->basename =~ m{ \A
+ # Look for commonly used names for license files
+ (?: copying | licen[cs]e | l?gpl | bsd | artistic )
+ # ... possibly followed by a version
+ [v0-9._-]*
+ (?:\. .* )? \Z
+ }xsmi
+ # Ignore some common extensions for source or compiled
+ # extension files. There was at least one file named
+ # "license.el". These are probably license-displaying
+ # code, not license files. Also ignore executable files
+ # in general. This means we get false-negatives for
+ # licenses files marked executable, but these will trigger
+ # a warning about being executable. (See #608866)
+ #
+ # Another exception is made for .html and .php because
+ # preserving working links is more important than saving
+ # some bytes, and because a package had an HTML form for
+ # licenses called like that. Another exception is made
+ # for various picture formats since those are likely to
+ # just be simply pictures.
+ #
+ # DTD files are excluded at the request of the Mozilla
+ # suite maintainers. Zope products include license files
+ # for runtime display. underXXXlicense.docbook files are
+ # from KDE.
+ #
+ # Ignore extra license files in examples, since various
+ # package building software includes example packages with
+ # licenses.
+ && !$item->is_executable
+ && $item->name !~ m{ \. (?:
+ # Common "non-license" file extensions...
+ el|[ch]|cc|p[ylmc]|[hu]i|p_hi|html|php|rb|xpm
+ |png|jpe?g|gif|svg|dtd|mk|lisp|yml|rs|ogg|xbm
+ ) \Z}xsm
+ && $item->name !~ m{^usr/share/zope/Products/.*\.(?:dtml|pt|cpt)$}
+ && $item->name !~ m{/under\S+License\.docbook$}
+ && $item->name !~ m{^usr/share/doc/[^/]+/examples/}
+ # liblicense has a manpage called license
+ && $item->name !~ m{^usr/share/man/(?:[^/]+/)?man\d/}
+ # liblicense (again)
+ && $item->name !~ m{^usr/share/pyshared-data/}
+ # Rust crate unmodified upstream sources
+ && $item->name !~ m{^usr/share/cargo/registry/}
+ # Some GNOME/GTK software uses these to show the "license
+ # header".
+ && $item->name !~ m{
+ ^usr/share/(?:gnome/)?help/[^/]+/[^/]+/license\.page$
+ }x
+ # base-files (which is required to ship them)
+ && $item->name !~ m{^usr/share/common-licenses/[^/]+$}
+ && !length($item->link)
+ # Sphinx includes various license files
+ && $item->name !~ m{/_sources/license(?:\.rst)?\.txt$}i
+ ) {
+
+ # okay, we cannot rule it out based on file name; but if
+ # it is an elf or a static library, we also skip it. (In
+ # case you hadn't guessed; liblicense)
+
+ $self->pointed_hint('extra-license-file', $item->pointer)
+ unless $item->file_type =~ m/^[^,]*\bELF\b/
+ || $item->file_type =~ m/\bcurrent ar archive\b/;
+ }
+
+ return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et