Adding side stream changes to Maemian. Working to integrate full upstream libraries...
[maemian] / nokia-lintian / checks / fields
diff --git a/nokia-lintian/checks/fields b/nokia-lintian/checks/fields
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+# fields -- lintian check script (rewrite) -*- perl -*-
+#
+# Copyright (C) 2004 Marc Brockschmidt
+#
+# Parts of the code were taken from the old check script, which
+# was Copyright (C) 1998 Richard Braakman (also licensed under the
+# GPL 2 or higher)
+#
+# 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 http://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::fields;
+use strict;
+
+use lib "$ENV{'LINTIAN_ROOT'}/checks/";
+use common_data;
+use Dep;
+use Tags;
+use Util;
+use Lintian::Data;
+
+# The allowed Python dependencies currently.  This is the list of alternatives
+# that, either directly or through transitive dependencies that can be relied
+# upon, ensure /usr/bin/python will exist for the use of dh_python.
+my $python_depend = 'python | python-dev | python-all | python-all-dev | '
+    . join (' | ', map { "python$_ | python$_-dev" } qw(2.4 2.5));
+
+# Certain build tools must be listed in Build-Depends even if there are no
+# arch-specific packages because they're required in order to run the clean
+# rule.  (See Policy 7.6.)  The following is a list of package dependencies;
+# regular expressions that, if they match anywhere in the debian/rules file,
+# say that this package is allowed (and required) in Build-Depends; and
+# optional tags to use for reporting the problem if some information other
+# than the default is required.
+my @global_clean_depends = (
+       [ ant => '^include\s*/usr/share/cdbs/1/rules/ant.mk' ],
+       [ cdbs => '^include\s+/usr/share/cdbs/' ],
+       [ dbs => '^include\s+/usr/share/dbs/' ],
+       [ debhelper => '^include\s+/usr/share/cdbs/1/rules/debhelper.mk' ],
+       [ dpatch => '^include\s+/usr/share/cdbs/1/rules/dpatch.mk' ],
+       [ quilt => '^include\s+/usr/share/cdbs/1/rules/patchsys-quilt.mk' ],
+       [ dpatch => '^include\s+/usr/share/dpatch/' ],
+       [ quilt => '^include\s+/usr/share/quilt/' ],
+       [ $python_depend => '/usr/share/cdbs/1/class/python-distutils.mk', 'missing-python-build-dependency' ],
+);
+
+# These are similar, but the resulting dependency is only allowed, not
+# required.
+#
+# The xsfclean rule is specific to the packages maintained by the X Strike
+# Force, but there are enough of those to make the rule worthwhile.
+my @global_clean_allowed = (
+       [ patchutils => '^include\s+/usr/share/cdbs/1/rules/dpatch.mk' ],
+       [ patchutils => '^include\s+/usr/share/cdbs/1/rules/patchsys-quilt.mk' ],
+       [ patchutils => '^include\s+/usr/share/cdbs/1/rules/simple-patchsys.mk' ],
+       [ 'python-central' => '^DEB_PYTHON_SYSTEM\s*:?=\s*pycentral' ],
+       [ 'python-support' => '^DEB_PYTHON_SYSTEM\s*:?=\s*pysupport' ],
+       [ 'python-setuptools' => '/usr/share/cdbs/1/class/python-distutils.mk' ],
+       [ quilt => '^clean:\s+xsfclean\b' ],
+);
+
+# A list of packages; regular expressions that, if they match anywhere in the
+# debian/rules file, this package must be listed in either Build-Depends or
+# Build-Depends-Indep as appropriate; and optional tags as above.
+my @global_depends = (
+       [ $python_depend => '^\t\s*dh_python\s', 'missing-dh_python-build-dependency' ],
+       [ 'python-central' => '^\t\s*dh_pycentral\s' ],
+       [ 'python-support' => '^\t\s*dh_pysupport\s' ],
+       [ 'python-central' => '^DEB_PYTHON_SYSTEM\s*:?=\s*pycentral' ],
+       [ 'python-support' => '^DEB_PYTHON_SYSTEM\s*:?=\s*pysupport' ],
+);
+
+# Similarly, this list of packages, regexes, and optional tags say that if the
+# regex matches in one of clean, build-arch, binary-arch, or a rule they
+# depend on, this package is allowed (and required) in Build-Depends.
+my @rule_clean_depends = (
+       [ debhelper => '^\t\s*dh_.+' ],
+       [ dpatch => '^\t\s*dpatch\s' ],
+       [ 'libmodule-build-perl' => '(^\t|\|\|)\s*(perl|\$\(PERL\))\s+Build\b' ],
+       [ "po-debconf" => '^\t\s*debconf-updatepo\s' ],
+       [ $python_depend => '^\t\s*python\s', 'missing-python-build-dependency' ],
+       [ $python_depend => '\ssetup\.py\b', 'missing-python-build-dependency' ],
+       [ quilt => '^\t\s*(\S+=\S+\s+)*quilt\s' ],
+       [ yada => '^\t\s*yada\s' ],
+);
+
+# Similar, but the resulting dependency is only allowed, not required.  We
+# permit a versioned dependency on perl-base because that used to be the
+# standard suggested dependency.  No package should be depending on just
+# perl-base, since it's Priority: required.
+my @rule_clean_allowed = (
+       [ patch => '^\t\s*(?:perl debian/)?yada\s+unpatch' ],
+       [ 'perl | perl-base (>= 5.6.0-16)' => '(^\t|\|\|)\s*(perl|\$\(PERL\))\s' ],
+       [ 'python-setuptools' => '\ssetup\.py\b' ],
+);
+
+# A simple list of regular expressions which, if they match anywhere in
+# debian/rules, indicate the requirements for debian/rules clean are complex
+# enough that we can't know what packages are permitted in Build-Depends and
+# should bypass the build-depends-without-arch-dep check completely.
+my @global_clean_bypass = (
+       '^include\s*/usr/share/cdbs/1/class/ant.mk',
+       '^\s+dh\s+'
+);
+
+sub run {
+
+my $pkg = shift;
+my $type = shift;
+my $version;
+my $arch_indep;
+
+# Load obsolete packages list.
+my $obsolete_packages = Lintian::Data->new ('fields/obsolete-packages');
+
+local $/ = undef; #Read everything in one go
+
+unless (-d "fields") {
+       fail("directory in lintian laboratory for $type package $pkg missing: fields");
+}
+
+#---- Package
+
+if ($type eq "binary"){
+       if (not open (FH, '<', "fields/package")) {
+               tag "no-package-name", "";
+       } else {
+               my $name = <FH>;
+               close FH;
+
+               unfold("package", \$name);
+               tag "bad-package-name", "" unless $name =~ /^[A-Z0-9][-+\.A-Z0-9]+$/i;
+               tag "package-not-lowercase", "" if ($name =~ /[A-Z]/)
+       }
+}
+
+#---- Version
+
+if (not open (FH, '<', "fields/version")) {
+       tag "no-version-field", "";
+} else {
+       $version = <FH>;
+       close FH;
+
+       unfold("version", \$version);
+
+       if (@_ = _valid_version($version)) {
+               my ($epoch, $upstream, $debian) = @_;
+               if ($upstream !~ /^\d/i) {
+                       tag "upstream-version-not-numeric", "$version";
+               }
+               if (defined $debian) {
+                       tag "debian-revision-should-not-be-zero", "$version"
+                               if $debian eq '-0';
+                       my $ubuntu;
+                       $debian =~ /^-([^.]+)(?:\.[^.]+)?(?:\.[^.]+)?(\..*)?$/;
+                       my $extra = $2;
+                       if (defined $extra) {
+                               $debian =~ /^-([^.]+ubuntu[^.]+)(?:\.\d+){1,3}(\..*)?$/;
+                               $ubuntu = 1;
+                               $extra = $2;
+                       }
+                       if (not defined $1 or defined $extra) {
+                               tag "debian-revision-not-well-formed", "$version";
+                       }
+                       if ($debian =~ /^-[^.-]+\.[^.-]+\./ and not $ubuntu) {
+                               tag "binary-nmu-uses-old-version-style", "$version"
+                                       if $type eq 'binary';
+                               tag "binary-nmu-debian-revision-in-source", "$version"
+                                       if $type eq 'source';
+                       }
+               }
+               if ($version =~ /\+b\d+$/ && $type eq "source") {
+                       tag "binary-nmu-debian-revision-in-source", "$version";
+               }
+       } else {
+               tag "bad-version-number", "$version";
+       }
+}
+
+#---- Architecture
+
+if (not open (FH, '<', "fields/architecture")) {
+       tag "no-architecture-field", "";
+} else {
+       my $archs = <FH>;
+       close FH;
+
+       unfold("architecture", \$archs);
+
+       my @archs = split / /, $archs;
+
+       if (@archs > 1 && grep { $_ eq "any" || $_ eq "all" } @archs) {
+               tag "magic-arch-in-arch-list", "";
+       }
+
+       for my $arch (@archs) {
+               tag "unknown-architecture", "$arch" unless $known_archs{$arch};
+       }
+
+       if ($type eq "binary") {
+               tag "too-many-architectures", "" if (@archs > 1);
+               tag "arch-any-in-binary-pkg", "" if (grep { $_ eq "any" } @archs);
+                tag "aspell-package-not-arch-all", ""
+                    if ($pkg =~ /^aspell-[a-z]{2}(-.*)?$/ && (@archs > 1 || $archs[0] ne 'all'));
+       }
+
+       # Used for later tests.
+       $arch_indep = 1 if (@archs == 1 && $archs[0] eq 'all');
+}
+
+#---- Subarchitecture (udeb)
+
+if (open(FH, '<', "fields/subarchitecture")) {
+       my $subarch = <FH>;
+       close(FH);
+
+       unfold("subarchitecture", \$subarch);
+}
+
+#---- Maintainer
+#---- Uploaders
+
+for my $f (qw(maintainer uploaders)) {
+       if (not open (FH, '<', "fields/$f")) {
+               tag "no-maintainer-field", "" if $f eq "maintainer";
+       } else {
+               my $maintainer = <FH>;
+               close FH;
+
+               # Note, not expected to hit on uploaders anymore, as dpkg now strips
+               # newlines for the .dsc, and the newlines don't hurt in debian/control
+               unfold($f, \$maintainer);
+
+               $maintainer =~ s/^\s*(.+?)\s*$/$1/; #Remove leading and trailing whitespace
+
+               if ($f eq "uploaders") {
+                       check_maint($_, "uploader") for (split /\s*,\s*/, $maintainer);
+               } else {
+                       check_maint($maintainer, $f);
+                       if ($type eq 'source'
+                           && $maintainer =~ /\@lists(\.alioth)?\.debian\.org\b/
+                           && ! -f 'fields/uploaders') {
+                               tag 'no-human-maintainers';
+                       }
+               }
+       }
+}
+
+#---- Source
+
+if ($type eq "source") {
+       if (not open (FH, '<', "fields/source")) {
+               tag "no-source-field", "";
+       } else {
+               my $source = <FH>;
+               close FH;
+
+               unfold("source", \$source);
+
+               if ($type eq 'source') {
+                       if ($source ne $pkg) {
+                               tag "source-field-does-not-match-pkg-name", "$_";
+                       }
+               } else {
+                       if ($source !~ /[A-Z0-9][-+\.A-Z0-9]+                      #Package name
+                                       \s*
+                                       (?:\((?:\d+:)?(?:[-\.+:A-Z0-9]+?)(?:-[\.+A-Z0-9]+)?\))?\s*$/ix) { #Version
+                               tag "source-field-malformed", "$source";
+                       }
+               }
+       }
+}
+
+#---- Essential
+
+if (open (FH, '<', "fields/essential")) {
+       my $essential = <FH>;
+       close FH;
+
+       unfold("essential", \$essential);
+
+       tag "essential-in-source-package", "" if ($type eq "source");
+       tag "essential-no-not-needed", "" if ($essential eq "no");
+       tag "unknown-essential-value", "" if ($essential ne "no" and $essential ne "yes");
+       tag "new-essential-package", "" if ($essential eq "yes" and ! $known_essential{$pkg});
+}
+
+#---- Section
+
+if (not open (FH, '<', "fields/section")) {
+       tag 'no-section-field' if ($type eq 'binary');
+} else {
+       my $section = <FH>;
+       close FH;
+
+       unfold("section", \$section);
+
+       if ($type eq 'udeb') {
+           unless ($section eq 'debian-installer') {
+               tag "wrong-section-for-udeb", "$section";
+           }
+       } else {
+           my @parts = split /\//, $section, 2;
+
+           if ($parts[0] =~ /non-US/i) {
+               tag "non-us-spelling", "" if ($parts[0] ne "non-US");
+               if ($parts[1] and not $known_non_us_parts{$parts[1]}) {
+                   tag "unknown-section", "$section";
+               }
+           } elsif (scalar @parts > 1) {
+               tag "unknown-section", "$section" unless $known_archive_parts{$parts[0]};
+               tag "unknown-section", "$section" unless $known_sections{$parts[1]};
+           } elsif ($parts[0] eq 'unknown') {
+               tag "section-is-dh_make-template";
+           } else {
+               tag "unknown-section", "$section" unless $known_sections{$parts[0]};
+           }
+
+           # Check package name <-> section.
+           if ($pkg =~ /-docs?$/) {
+               tag "doc-package-should-be-section-doc", $pkg
+                   unless $parts[-1] eq 'doc';
+           } elsif ($pkg =~ /^lib.*-perl$/) {
+               tag "perl-package-should-be-section-perl", $pkg
+                   unless $parts[-1] eq 'perl';
+           } elsif ($pkg =~ /^python-/) {
+               tag "python-package-should-be-section-python", $pkg
+                   unless $parts[-1] eq 'python';
+           } elsif ($pkg =~ /^lib.*-dev$/) {
+                tag "dev-package-should-be-section-libdevel", $pkg
+                    unless $parts[-1] eq 'libdevel';
+            }
+        }
+}
+
+#---- Priority
+
+if (not open (FH, '<', "fields/priority")) {
+       tag "no-priority-field", "" if $type eq "binary";
+} else {
+       my $priority = <FH>;
+       close FH;
+
+       unfold("priority", \$priority);
+
+       tag "unknown-priority", "$priority" if (! $known_prios{$priority});
+
+       if ($pkg =~ /-dbg$/) {
+               tag "debug-package-should-be-priority-extra", $pkg
+                   unless $priority eq 'extra';
+        }
+}
+
+#---- Standards-Version
+# handled in checks/standards-version
+
+#---- Description
+# handled in checks/description
+
+#--- Homepage
+
+if (open (FH, '<', "fields/homepage")) {
+       my $homepage = <FH>;
+       close(FH);
+
+       unfold("homepage", \$homepage);
+
+       if ($homepage =~ /^\s*<(?:UR[LI]:)?.*>\s*$/i) {
+               tag "superfluous-clutter-in-homepage", $homepage;
+       }
+
+       require URI;
+       my $uri = URI->new($homepage);
+
+       unless ($uri->scheme) { # not an absolute URI
+               tag "bad-homepage", $homepage;
+       }
+}
+
+#---- Installer-Menu-Item (udeb)
+
+if (open(FH, '<', "fields/installer-menu-item")) {
+       my $menu_item = <FH>;
+       close(FH);
+
+       unfold('installer-menu-item', \$menu_item);
+
+       $menu_item =~ /^\d+$/ or tag "bad-menu-item", "$menu_item";
+}
+
+
+#---- Package relations (binary package)
+
+# Check whether the package looks like a meta-package, used for later
+# dependency checks.  We consider a package to possibly be a meta-package if
+# it is a binary package, arch: all, with no files outside of /usr/share/doc.
+my $metapackage = 0;
+if ($type eq 'binary' && $arch_indep) {
+       $metapackage = 1;
+       open (IN, '<', "index") or fail("cannot open index file index: $!");
+       local $_;
+       local $/ = "\n";
+       while (<IN>) {
+               my ($mode, $file) = (split(' ', $_, 6))[0,5];
+               next unless $file;
+               $metapackage = 0 unless ($mode =~ /^d/ || $file =~ m%^\./usr/share/doc/%);
+       }
+       close IN;
+}
+if (($type eq "binary") || ($type eq 'udeb')) {
+       my (%deps, %fields, %parsed);
+       my $debugpackage = 0;
+       my ($debugbase, $debugfound);
+       if ($pkg =~ /^([^-]+)(?:-.*)?-dbg$/) {
+               $debugpackage = 1;
+               $debugbase = $1;
+       }
+       for my $field (qw(depends pre-depends recommends suggests conflicts provides replaces breaks)) {
+               if (open(FH, '<', "fields/$field")) {
+                       #Get data and clean it
+                       my $data = <FH>;
+                       unfold($field, \$data);
+                       $data =~ s/^\s*(.+?)\s*$/$1/;
+                       $fields{$field} = $data;
+                       $parsed{$field} = Dep::parse ($data);
+
+                       my (@seen_libstdcs, @seen_tcls, @seen_tclxs, @seen_tks, @seen_tkxs, @seen_libpngs);
+
+                       my $is_dep_field = sub { grep { $_ eq $_[0] } qw(depends pre-depends recommends suggests) };
+
+                       tag "package-uses-breaks" if $field eq "breaks";
+
+                       tag "alternates-not-allowed", "$field"
+                           if ($data =~ /\|/ && ! &$is_dep_field($field));
+
+                       for my $dep (split /\s*,\s*/, $data) {
+                               my (@alternatives, @seen_obsolete_packages);
+                               push @alternatives, [_split_dep($_), $_] for (split /\s*\|\s*/, $dep);
+
+                               if (&$is_dep_field($field)) {
+                                       push @seen_libstdcs, $alternatives[0]->[0]
+                                           if defined $known_libstdcs{$alternatives[0]->[0]};
+                                       push @seen_tcls, $alternatives[0]->[0]
+                                           if defined $known_tcls{$alternatives[0]->[0]};
+                                       push @seen_tclxs, $alternatives[0]->[0]
+                                           if defined $known_tclxs{$alternatives[0]->[0]};
+                                       push @seen_tks, $alternatives[0]->[0]
+                                           if defined $known_tks{$alternatives[0]->[0]};
+                                       push @seen_tkxs, $alternatives[0]->[0]
+                                           if defined $known_tkxs{$alternatives[0]->[0]};
+                                       push @seen_libpngs, $alternatives[0]->[0]
+                                           if defined $known_libpngs{$alternatives[0]->[0]};
+                               }
+
+                               # Only for (Pre-)?Depends.
+                               tag "virtual-package-depends-without-real-package-depends", "$field: $alternatives[0]->[0]"
+                                   if ($known_virtual_packages{$alternatives[0]->[0]}
+                                       && ($field eq "depends" || $field eq "pre-depends"));
+
+                                # Check defaults for transitions.  Here, we only care that the first alternative is current.
+                                tag "depends-on-old-emacs", "$field: $alternatives[0]->[0]"
+                                    if (&$is_dep_field($field) && $known_obsolete_emacs{$alternatives[0]->[0]});
+
+                               for my $part_d (@alternatives) {
+                                       my ($d_pkg, $d_version, $d_arch, $rest, $part_d_orig) = @$part_d;
+
+                                       # We have found a Depends: on our non-dbg equivalent.
+                                       if ($debugpackage && $field eq "depends" && $d_pkg =~ /^\Q$debugbase/) {
+                                               $debugfound = 1;
+                                       }
+
+                                       tag "versioned-provides", "$part_d_orig"
+                                           if ($field eq "provides" && $d_version->[0]);
+
+                                       tag "breaks-without-version", "$part_d_orig"
+                                           if ($field eq "breaks" && !$d_version->[0]);
+
+                                       tag "obsolete-relation-form", "$field: $part_d_orig"
+                                           if ($d_version && grep { $d_version->[0] eq $_ } ("<", ">"));
+
+                                       tag "bad-version-in-relation", "$field: $part_d_orig"
+                                           if ($d_version->[0] && ! defined((_valid_version($d_version->[1]))[1]));
+
+                                       tag "package-relation-with-self", "$field: $part_d_orig"
+                                           if ($pkg eq $d_pkg) && ($field ne 'conflicts');
+
+                                       tag "bad-relation", "$field: $part_d_orig"
+                                           if $rest;
+
+                                       push @seen_obsolete_packages, $part_d_orig
+                                           if ($obsolete_packages->known($d_pkg) && &$is_dep_field($field));
+
+                                       tag "depends-on-x-metapackage", "$field: $part_d_orig"
+                                           if ($known_x_metapackages{$d_pkg} && ! $metapackage && &$is_dep_field($field));
+
+                                       tag "depends-on-essential-package-without-using-version", "$field: $part_d_orig"
+                                           if ($known_essential{$d_pkg} && ! $d_version->[0] && &$is_dep_field($field));
+
+                                       tag "package-depends-on-an-x-font-package", "$field: $part_d_orig"
+                                           if ($field =~ /^(pre-)?depends$/ && $d_pkg =~ /^xfont.*/ && $d_pkg ne 'xfonts-utils' && $d_pkg ne 'xfongs-encodings');
+
+                                       tag "needlessly-depends-on-awk", "$field"
+                                           if ($d_pkg eq "awk" && ! $d_version->[0] && &$is_dep_field($field));
+
+                                       tag "depends-on-libdb1-compat", "$field"
+                                           if ($d_pkg eq "libdb1-compat" && $pkg !~ /^libc(6|6.1|0.3)/ && $field =~ /^(pre-)depends$/);
+
+                                       tag "depends-on-python-minimal", "$field",
+                                           if ($d_pkg =~ /^python[\d.]*-minimal$/ && &$is_dep_field($field)
+                                               && $pkg !~ /^python[\d.]*-minimal$/);
+
+                                       tag "doc-package-depends-on-main-package", "$field"
+                                           if ("$d_pkg-doc" eq $pkg && $field =~ /^(pre-)depends$/);
+
+                                       tag "old-versioned-python-dependency", "$field: $part_d_orig"
+                                           if ($d_pkg eq 'python' && $d_version->[0] eq '<<' && &$is_dep_field($field)
+                                               && $arch_indep && $pkg =~ /^python-/ && ! -f "fields/python-version");
+                               }
+
+                               for my $pkg (@seen_obsolete_packages) {
+                                       if ($pkg eq $alternatives[0]->[0] or
+                                           scalar @seen_obsolete_packages == scalar @alternatives) {
+                                               tag "depends-on-obsolete-package", "$field: $pkg";
+                                       } else {
+                                               tag "ored-depends-on-obsolete-package", "$field: $pkg";
+                                       }
+                               }
+                       }
+                       tag "package-depends-on-multiple-libstdc-versions", @seen_libstdcs
+                           if (scalar @seen_libstdcs > 1);
+                       tag "package-depends-on-multiple-tcl-versions", @seen_tcls
+                           if (scalar @seen_tcls > 1);
+                       tag "package-depends-on-multiple-tclx-versions", @seen_tclxs
+                           if (scalar @seen_tclxs > 1);
+                       tag "package-depends-on-multiple-tk-versions", @seen_tks
+                           if (scalar @seen_tks > 1);
+                       tag "package-depends-on-multiple-tkx-versions", @seen_tkxs
+                           if (scalar @seen_tkxs > 1);
+                       tag "package-depends-on-multiple-libpng-versions", @seen_libpngs
+                           if (scalar @seen_libpngs > 1);
+               }
+       }
+
+       tag "dbg-package-missing-depends", $debugbase
+               if ($debugpackage && !$debugfound);
+
+       # If Conflicts or Breaks is set, make sure it's not inconsistent with
+       # the other dependency fields.
+       for my $conflict (qw/conflicts breaks/) {
+               next unless $fields{$conflict};
+               for my $field (qw(depends pre-depends recommends suggests)) {
+                       next unless $parsed{$field};
+                       for my $package (split /\s*,\s*/, $fields{$conflict}) {
+                               tag "conflicts-with-dependency", $field, $package
+                                   if Dep::implies($parsed{$field}, Dep::parse($package));
+                       }
+               }
+       }
+}
+
+#---- Package relations (source package)
+
+if ($type eq "source") {
+
+       #Get number of arch-indep packages:
+       my $arch_indep_packages = 0;
+       my $arch_dep_packages = 0;
+       if (not open(CONTROL, '<', "debfiles/control")) {
+               fail("Can't open debfiles/control: $!");
+       } else {
+               local $/ = "\n"; #Read this linewise
+               while (<CONTROL>) {
+                       if (/^Architecture: all/) {
+                               $arch_indep_packages++;
+                       } elsif (/^Architecture:/) {
+                               $arch_dep_packages++;
+                       }
+               }
+       }
+
+       # Search through rules and determine which dependencies are required.
+       # The keys in %needed and %needed_clean are the dependencies; the
+       # values are the tags to use or the empty string to use the default
+       # tag.
+       my (%needed, %needed_clean, %allowed_clean, $bypass_needed_clean);
+       open (RULES, '<', "debfiles/rules")
+           or fail("cannot read debfiles/rules: $!");
+       my $target = "none";
+       local $/ = "\n";        # Read this linewise
+       my @rules = qw(clean binary-arch build-arch);
+        my $maybe_skipping;
+       while (<RULES>) {
+               if (/^ifn?(eq|def)\s/) {
+                       $maybe_skipping++;
+               } elsif (/^endif\s/) {
+                       $maybe_skipping--;
+               }
+               for my $rule (@global_clean_depends) {
+                       if ($_ =~ /$rule->[1]/) {
+                               if ($maybe_skipping) {
+                                       $allowed_clean{$rule->[0]} = 1;
+                               } else {
+                                       $needed_clean{$rule->[0]} = $rule->[2] || $needed_clean{$rule->[0]} || '';
+                               }
+                       }
+               }
+               for my $rule (@global_clean_allowed) {
+                       if ($_ =~ /$rule->[1]/) {
+                               $allowed_clean{$rule->[0]} = 1;
+                       }
+               }
+               for my $rule (@global_clean_bypass) {
+                       if ($_ =~ /$rule/) {
+                               $bypass_needed_clean = 1;
+                       }
+               }
+               for my $rule (@global_depends) {
+                       if ($_ =~ /$rule->[1]/ && !$maybe_skipping) {
+                               $needed{$rule->[0]} = $rule->[2] || $needed{$rule->[0]} || '';
+                       }
+               }
+               if (/^(\S+?):+(.*)/) {
+                       $target = $1;
+                       if (grep ($_ eq $target, @rules)) {
+                               push (@rules, split (' ', $2));
+                       }
+               }
+               if (grep ($_ eq $target, @rules)) {
+                       for my $rule (@rule_clean_depends) {
+                               if ($_ =~ /$rule->[1]/) {
+                                       if ($maybe_skipping) {
+                                               $allowed_clean{$rule->[0]} = 1;
+                                       } else {
+                                               $needed_clean{$rule->[0]} = $rule->[2] || $needed_clean{$rule->[0]} || '';
+                                       }
+                               }
+                       }
+                       for my $rule (@rule_clean_allowed) {
+                               if ($_ =~ /$rule->[1]/) {
+                                       $allowed_clean{$rule->[0]} = 1;
+                               }
+                       }
+               }
+       }
+       close RULES;
+       $/ = undef;             # Back to reading everything.
+
+       tag "build-depends-indep-without-arch-indep", ""
+               if (-e "fields/build-depends-indep" && $arch_indep_packages == 0);
+
+       my $is_dep_field = sub { grep { $_ eq $_[0] } qw(build-depends build-depends-indep) };
+
+       my %depend;
+       for my $field (qw(build-depends build-depends-indep build-conflicts build-conflicts-indep)) {
+               if (open(FH, '<', "fields/$field")) {
+                       #Get data and clean it
+                       my $data = <FH>;
+                       unfold($field, \$data);
+                       $data =~ s/^\s*(.+?)\s*$/$1/;
+                       $depend{$field} = $data;
+
+                       for my $dep (split /\s*,\s*/, $data) {
+                               my @alternatives;
+                               push @alternatives, [_split_dep($_), $_] for (split /\s*\|\s*/, $dep);
+
+                               tag "virtual-package-depends-without-real-package-depends", "$field: $alternatives[0]->[0]"
+                                   if ($known_virtual_packages{$alternatives[0]->[0]} && &$is_dep_field($field));
+
+                               for my $part_d (@alternatives) {
+                                       my ($d_pkg, $d_version, $d_arch, $rest, $part_d_orig) = @$part_d;
+
+                                       for my $arch (@{$d_arch->[0]}) {
+                                               if (!$known_archs{$arch}) {
+                                                       tag "invalid-arch-string-in-source-relation", "$arch [$field: $part_d_orig]"
+                                               }
+                                       }
+
+                                       tag "build-depends-on-build-essential", $field
+                                           if ($d_pkg eq "build-essential");
+
+                                       tag "depends-on-build-essential-package-without-using-version", "$d_pkg [$field: $part_d_orig]"
+                                           if ($known_build_essential{$d_pkg} && ! $d_version->[1]);
+
+                                       tag "build-depends-on-essential-package-without-using-version", "$field: $part_d_orig"
+                                           if ($d_pkg ne "coreutils" && $known_essential{$d_pkg} && ! $d_version->[0]);
+                                       tag "build-depends-on-obsolete-package", "$field: $part_d_orig"
+                                           if ($obsolete_packages->known($d_pkg) && &$is_dep_field($field));
+
+                                       tag "build-depends-on-x-metapackage", "$field: $part_d_orig"
+                                           if ($known_x_metapackages{$d_pkg} && &$is_dep_field($field));
+
+                                       tag "build-depends-on-1-revision", "$field: $part_d_orig"
+                                           if ($d_version->[0] eq '>=' && $d_version->[1] =~ /-1$/ && &$is_dep_field($field));
+
+                                       tag "bad-relation", "$field: $part_d_orig"
+                                           if $rest;
+                               }
+                       }
+               }
+       }
+
+       # Check for duplicates.
+       my $build_all = $depend{'build-depends'} || '';
+       $build_all .= ', ' if $depend{'build-depends'} && $depend{'build-depends-indep'};
+       $build_all .= $depend{'build-depends-indep'} || '';
+       my @dups = Dep::get_dups(Dep::parse($build_all));
+       for my $dup (@dups) {
+               tag "package-has-a-duplicate-build-relation", join (', ', @$dup);
+       }
+
+       # Make sure build dependencies and conflicts are consistent.
+       $depend{'build-depends'} = Dep::parse($depend{'build-depends'} || '');
+       $depend{'build-depends-indep'} = Dep::parse($depend{'build-depends-indep'} || '');
+       for ($depend{'build-conflicts'}, $depend{'build-conflicts-indep'}) {
+               next unless $_;
+               for my $conflict (split /\s*,\s*/, $_) {
+                       if (Dep::implies($depend{'build-depends'}, Dep::parse($conflict))
+                           || Dep::implies($depend{'build-depends-indep'}, Dep::parse($conflict))) {
+                               tag "build-conflicts-with-build-dependency", $conflict;
+                       }
+               }
+       }
+
+       # Make sure that all the required build dependencies are there.  Don't
+       # issue missing-build-dependency errors for debhelper, since there's
+       # another test that does that and it would just be a duplicate.
+       for my $package (keys %needed_clean) {
+               my $dep = Dep::parse($package);
+               my $tag = $needed_clean{$package} || 'missing-build-dependency';
+               unless (Dep::implies($depend{'build-depends'}, $dep)) {
+                       if (Dep::implies($depend{'build-depends-indep'}, $dep)) {
+                               tag "clean-should-be-satisfied-by-build-depends", $package;
+                       } else {
+                               if ($tag eq 'missing-build-dependency') {
+                                       tag $tag, $package if $package ne 'debhelper';
+                               } else {
+                                       tag $tag;
+                               }
+                       }
+               }
+       }
+       for my $package (keys %needed) {
+               my $dep = Dep::parse($package);
+               my $tag = $needed{$package} || 'missing-build-dependency';
+
+               # dh_python deactivates itself if the new Python build policy
+               # is enabled.
+               if ($tag eq 'missing-dh_python-build-dependency') {
+                       next if -f 'debfiles/pycomat';
+                       next if -f 'fields/python-version';
+               }
+               unless (Dep::implies($depend{'build-depends'}, $dep)) {
+                       unless (Dep::implies($depend{'build-depends-indep'}, $dep)) {
+                               if ($tag eq 'missing-build-dependency') {
+                                       tag $tag, $package;
+                               } else {
+                                       tag $tag;
+                               }
+                       }
+               }
+       }
+
+       # This check is a bit tricky.  We want to allow in Build-Depends a
+       # dependency with any version, since reporting this tag over version
+       # mismatches would be confusing and quite likely wrong.  The approach
+       # taken is to strip the version information off all dependencies
+       # allowed in Build-Depends, strip the version information off of the
+       # dependencies in Build-Depends, and then allow any dependency in
+       # Build-Depends that's implied by the dependencies we require or allow
+       # there.
+       #
+       # We also have to map | to , when building the list of allowed
+       # packages so that the implications will work properly.
+       #
+       # This is confusing.  There should be a better way to do this.
+       if (-e "fields/build-depends" && $arch_dep_packages == 0 && !$bypass_needed_clean) {
+               open(FH, '<', "fields/build-depends")
+                   or fail("cannot read fields/build-depends: $!");
+               my $build_depends = <FH>;
+               close FH;
+               my @packages = split /\s*,\s*/, $build_depends;
+               my @allowed = map { s/[\(\[][^\)\]]+[\)\]]//g; s/\|/,/g; $_ } keys (%needed_clean), keys (%allowed_clean);
+               my $dep = Dep::parse (join (',', @allowed));
+               foreach my $pkg (@packages) {
+                       my $name = $pkg;
+                       $name =~ s/[\[\(][^\)\]]+[\)\]]//g;
+                       $name =~ s/\s+$//;
+                       $name =~ s/\s+/ /g;
+                       unless (Dep::implies($dep, Dep::parse($name))) {
+                               tag "build-depends-without-arch-dep", $name;
+                       }
+               }
+       }
+}
+
+#----- Origin
+
+if (open(FH, '<', "fields/origin")) {
+       my $origin = <FH>;
+       close(FH);
+
+       unfold('origin', \$origin);
+
+       tag "redundant-origin-field", "" if $origin =~ /^\s*debian\s*$/i;
+}
+
+#----- Bugs
+
+if (open(FH, '<', "fields/bugs")) {
+       my $bugs = <FH>;
+       close FH;
+
+       unfold('bugs', \$bugs);
+
+       tag "redundant-bugs-field"
+           if $bugs =~ m,^\s*debbugs://bugs.debian.org/?\s*$,i;
+}
+
+#----- Python-Version
+
+if (open(FH, '<', "fields/python-version")) {
+       my $pyversion = <FH>;
+       close FH;
+
+       unfold('python-version', \$pyversion);
+
+       my @valid = ([ '\d+\.\d+', '\d+\.\d+' ],
+                    [ '\d+\.\d+' ],
+                    [ '\>=\s*\d+\.\d+', '\<\<\s*\d+\.\d+' ],
+                    [ '\>=\s*\d+\.\d+' ],
+                    [ 'current', '\>=\s*\d+\.\d+' ],
+                    [ 'current' ],
+                    [ 'all' ]);
+
+       my @pyversion = split(/\s*,\s*/, $pyversion);
+       if (@pyversion > 2) {
+               if (grep { !/^\d+\.\d+$/ } @pyversion) {
+                       tag "malformed-python-version", "$pyversion";
+               }
+       } else {
+               my $okay = 0;
+               for my $rule (@valid) {
+                       if ($pyversion[0] =~ /^$rule->[0]$/
+                           && (($pyversion[1] && $rule->[1] && $pyversion[1] =~ /^$rule->[1]$/)
+                                || (! $pyversion[1] && ! $rule->[1]))) {
+                               $okay = 1;
+                               last;
+                       }
+               }
+               tag "malformed-python-version", "$pyversion" unless $okay;
+       }
+}
+
+#----- Dm-Upload-Allowed
+
+if (open(FH, '<', 'fields/dm-upload-allowed')) {
+       my $dmupload = <FH>;
+       close FH;
+
+       unfold('dm-upload-allowed', \$dmupload);
+
+       unless ($dmupload =~ /^\s*yes\s*$/) {
+               tag "malformed-dm-upload-allowed", "$dmupload";
+       }
+}
+
+#----- Field checks (without checking the value)
+
+for my $field (glob("fields/*")) {
+       $field =~ s!^fields/!!;
+
+       next if ($field eq 'original-maintainer') and $version =~ /ubuntu/;
+
+       tag "obsolete-field", "$field"
+           if $known_obsolete_fields{$field};
+
+       tag "unknown-field-in-dsc", "$field"
+           if ($type eq "source" && ! $known_source_fields{$field} && ! $known_obsolete_fields{$field});
+
+       tag "unknown-field-in-control", "$field"
+           if ($type eq "binary" && ! $known_binary_fields{$field} && ! $known_obsolete_fields{$field});
+
+       tag "unknown-field-in-control", "$field"
+           if ($type eq "udeb" && ! $known_udeb_fields{$field} && ! $known_obsolete_fields{$field});
+}
+
+}
+
+# splits "foo (>= 1.2.3) [!i386 ia64]" into
+# ( "foo", [ ">=", "1.2.3" ], [ [ "i386", "ia64" ], 1 ], "" )
+#                                                  ^^^   ^^
+#                                 true, if ! was given   ||
+#           rest (should always be "" for valid dependencies)
+sub _split_dep {
+       my $dep = shift;
+       my ($pkg, $version, $darch) = ("", ["",""], [[],""]);
+
+       $pkg = $1 if $dep =~ s/^\s*([^\s\[\(]+)\s*//;
+
+       if (length $dep) {
+               if ($dep =~ s/\s* \( \s* (<<|<=|<|=|>=|>>|>) \s* ([^\s(]+) \s* \) \s*//x) {
+                       @$version = ($1, $2);
+               }
+               if ($dep && $dep =~ s/\s*\[([^\]]+)\]\s*//) {
+                       my $t = $1;
+                       $darch->[1] = 1 if ($t =~ s/!//g);
+                       $darch->[0] = [ split /\s+/, $t ];
+               }
+       }
+
+       return ($pkg, $version, $darch, $dep);
+}
+
+sub _valid_version {
+       my $ver = shift;
+
+       # epoch check means nothing here... This check is only useful to detect
+       # weird characters in version (and to get the debian revision)
+       if ($ver =~ m/^(\d+:)?([-\.+:~A-Z0-9]+?)(-[\.+~A-Z0-9]+)?$/i) {
+               return ($1, $2, $3);
+       } else {
+               return ();
+       }
+}
+
+sub unfold {
+       my $field = shift;
+       my $line = shift;
+
+       $$line =~ s/\n$//;
+
+       if ($$line =~ s/\n//g) {
+               tag "multiline-field", "$field";
+       }
+}
+
+sub check_maint {
+       my ($maintainer, $f) = @_;
+       $maintainer =~ /^([^<\s]*(?:\s+[^<\s]+)*)?(\s*)(?:<(.+)>)?(.*)$/, 
+       my ($name, $del, $mail, $crap) = ($1, $2, $3, $4);
+
+       if (!$mail && $name =~ m/@/) { # name probably missing and address has no <>
+               $mail = $name;
+               $name = undef;
+       }
+
+       tag "$f-address-malformed", "$maintainer" if $crap;
+       tag "$f-address-looks-weird", "$maintainer" if ! $del && $name && $mail;
+
+       # Wookey really only has one name.  If we get more of these, consider
+       # removing the check.
+       if (! $name) {
+               tag "$f-name-missing", "$maintainer";
+       } elsif ($name !~ /^\S+\s+\S+/ && $name ne 'Wookey') {
+               tag "$f-not-full-name", "$name";
+       }
+                       
+       #This should be done with Email::Valid:
+       if (!$mail) {
+               tag "$f-address-missing", "$maintainer";
+       } else {
+               tag "$f-address-malformed", "$maintainer" 
+                   unless ($mail =~ /^[^()<>@,;:\\"[\]]+@(\S+\.)+\S+/); #"
+
+               tag "$f-address-is-on-localhost", "$maintainer"
+                   if ($mail =~ /(?:localhost|\.localdomain|\.localnet)$/);
+
+               tag "wrong-debian-qa-address-set-as-maintainer", "$maintainer"
+                   if ($f eq "maintainer" && $mail eq 'debian-qa@lists.debian.org');
+
+               tag "wrong-debian-qa-group-name", "$maintainer"
+                   if ($f eq "maintainer" && $mail eq 'packages@qa.debian.org' &&
+                               $name ne 'Debian QA Group');
+       }
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: t
+# cperl-indent-level: 8
+# End:
+# vim: syntax=perl sw=4 ts=4 noet shiftround