1 files changed, 123 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Libraries/Shared/Soname.pm b/lib/Lintian/Check/Libraries/Shared/Soname.pm
new file mode 100644
index 0000000..9887e3b
--- /dev/null
+++ b/lib/Lintian/Check/Libraries/Shared/Soname.pm
@@ -0,0 +1,123 @@
+# libraries/shared/soname -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 2012 Kees Cook
+# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
+# Copyright (C) 2021 Felix Lechner
+#
+# 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::Libraries::Shared::Soname;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Const::Fast;
+use List::SomeUtils qw(any none uniq);
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+const my $SPACE => q{ };
+const my $SLASH => q{/};
+
+has DEB_HOST_MULTIARCH => (
+    is => 'rw',
+    lazy => 1,
+    default => sub {
+        my ($self) = @_;
+
+        return $self->data->architectures->deb_host_multiarch;
+    }
+);
+
+sub installable {
+    my ($self) = @_;
+
+    return
+      if $self->processable->type eq 'udeb';
+
+    my $architecture = $self->processable->fields->value('Architecture');
+    my $multiarch_component = $self->DEB_HOST_MULTIARCH->{$architecture};
+
+    my @common_folders = qw{lib usr/lib};
+    push(@common_folders, map { "$_/$multiarch_component" } @common_folders)
+      if length $multiarch_component;
+
+    my @duplicated;
+    for my $item (@{$self->processable->installed->sorted_list}) {
+
+        # For the package naming check, filter out SONAMEs where all the
+        # files are at paths other than /lib, /usr/lib and /usr/lib/<MA-DIR>.
+        # This avoids false positives with plugins like Apache modules,
+        # which may have their own SONAMEs but which don't matter for the
+        # purposes of this check.
+        next
+          if none { $item->dirname eq $_ . $SLASH } @common_folders;
+
+        # Also filter out nsswitch modules
+        next
+          if $item->basename =~ m{^ libnss_[^.]+\.so(?:\.\d+) $}x;
+
+        push(@duplicated, @{$item->elf->{SONAME} // []});
+    }
+
+    my @sonames = uniq @duplicated;
+
+    # try to strip transition strings
+    my $shortened_name = $self->processable->name;
+    $shortened_name =~ s/c102\b//;
+    $shortened_name =~ s/c2a?\b//;
+    $shortened_name =~ s/\dg$//;
+    $shortened_name =~ s/gf$//;
+    $shortened_name =~ s/v[5-6]$//; # GCC-5 / libstdc++6 C11 ABI breakage
+    $shortened_name =~ s/-udeb$//;
+    $shortened_name =~ s/^lib64/lib/;
+
+    my $match_found = 0;
+    for my $soname (@sonames) {
+
+        $soname =~ s/ ([0-9]) [.]so[.] /$1-/x;
+        $soname =~ s/ [.]so (?:[.]|\z) //x;
+        $soname =~ s/_/-/g;
+
+        my $lowercase = lc $soname;
+
+        $match_found = any { $lowercase eq $_ }
+          ($self->processable->name, $shortened_name);
+
+        last
+          if $match_found;
+    }
+
+    $self->hint('package-name-doesnt-match-sonames',
+        join($SPACE, sort @sonames))
+      if @sonames && !$match_found;
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et