use File::Basename;
use Pod::Usage;
+ use lib '{- sourcedir('util', 'perl') -}';
+ use OpenSSL::fallback '{- sourcefile('external', 'perl', 'MODULES.txt') -}';
+
my $here = dirname($0);
if (scalar @ARGV == 0) {
# With no arguments, re-create the build file
- use lib '{- sourcedir('util', 'perl') -}';
- use OpenSSL::fallback '{- sourcefile('external', 'perl', 'MODULES.txt') -}';
use OpenSSL::Template;
my $prepend = <<'_____';
my $buildparams = undef;
my $reconf = undef;
my $verbose = undef;
+ my $query = undef;
my $help = undef;
my $man = undef;
GetOptions('dump|d' => \$dump,
'build-parameters|b' => \$buildparams,
'reconfigure|reconf|r' => \$reconf,
'verbose|v' => \$verbose,
+ 'query|q=s' => \$query,
'help' => \$help,
'man' => \$man)
or die "Errors in command line arguments\n";
chdir $here;
exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
}
+ if ($query) {
+ use OpenSSL::Config::Query;
+
+ my $confquery = OpenSSL::Config::Query->new(info => \%unified_info,
+ config => \%config);
+ my $result = eval "\$confquery->$query";
+
+ # We may need a result class with a printing function at some point.
+ # Until then, we assume that we get a scalar, or a list or a hash table
+ # with scalar values and simply print them in some orderly fashion.
+ if (ref $result eq 'ARRAY') {
+ print "$_\n" foreach @$result;
+ } elsif (ref $result eq 'HASH') {
+ print "$_ : \\\n ", join(" \\\n ", @{$result->{$_}}), "\n"
+ foreach sort keys %$result;
+ } elsif (ref $result eq 'SCALAR') {
+ print "$$result\n";
+ }
+ }
}
1;
--- /dev/null
+# Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License"). You may not use
+# this file except in compliance with the License. You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+package OpenSSL::Config::Query;
+
+use 5.10.0;
+use strict;
+use warnings;
+use Carp;
+
+=head1 NAME
+
+OpenSSL::Config::Query - Query OpenSSL configuration info
+
+=head1 SYNOPSIS
+
+ use OpenSSL::Config::Info;
+
+ my $query = OpenSSL::Config::Query->new(info => \%unified_info);
+
+ # Query for something that's expected to give a scalar back
+ my $variable = $query->method(... args ...);
+
+ # Query for something that's expected to give a list back
+ my @variable = $query->method(... args ...);
+
+=head1 DESCRIPTION
+
+The unified info structure, commonly known as the %unified_info table, has
+become quite complex, and a bit overwhelming to look through directly. This
+module makes querying this structure simpler, through diverse methods.
+
+=head2 Constructor
+
+=over 4
+
+=item B<new> I<%options>
+
+Creates an instance of the B<OpenSSL::Config::Query> class. It takes options
+in keyed pair form, i.e. a series of C<< key => value >> pairs. Available
+options are:
+
+=over 4
+
+=item B<info> =E<gt> I<HASHREF>
+
+A reference to a unified information hash table, most commonly known as
+%unified_info.
+
+=item B<config> =E<gt> I<HASHREF>
+
+A reference to a config information hash table, most commonly known as
+%config.
+
+=back
+
+Example:
+
+ my $info = OpenSSL::Config::Info->new(info => \%unified_info);
+
+=back
+
+=cut
+
+sub new {
+ my $class = shift;
+ my %opts = @_;
+
+ my @messages = _check_accepted_options(\%opts,
+ info => 'HASH',
+ config => 'HASH');
+ croak $messages[0] if @messages;
+
+ # We make a shallow copy of the input structure. We might make
+ # a different choice in the future...
+ my $instance = { info => $opts{info} // {},
+ config => $opts{config} // {} };
+ bless $instance, $class;
+
+ return $instance;
+}
+
+=head2 Query methods
+
+=over 4
+
+=item B<get_sources> I<LIST>
+
+LIST is expected to be the collection of names of end products, such as
+programs, modules, libraries.
+
+The returned result is a hash table reference, with each key being one of
+these end product names, and its value being a reference to an array of
+source file names that constitutes everything that will or may become part
+of that end product.
+
+=cut
+
+sub get_sources {
+ my $self = shift;
+
+ my $result = {};
+ foreach (@_) {
+ my @sources = @{$self->{info}->{sources}->{$_} // []};
+ my @staticlibs =
+ grep { $_ =~ m|\.a$| } @{$self->{info}->{depends}->{$_} // []};
+
+ my %parts = ( %{$self->get_sources(@sources)},
+ %{$self->get_sources(@staticlibs)} );
+ my @parts = map { @{$_} } values %parts;
+
+ my @generator =
+ ( ( $self->{info}->{generate}->{$_} // [] ) -> [0] // () );
+ my %generator_parts = %{$self->get_sources(@generator)};
+ # if there are any generator parts, we ignore it, because that means
+ # it's a compiled program and thus NOT part of the source that's
+ # queried.
+ @generator = () if %generator_parts;
+
+ my @partial_result =
+ ( ( map { @{$_} } values %parts ),
+ ( grep { !defined($parts{$_}) } @sources, @generator ) );
+
+ # Push conditionally, to avoid creating $result->{$_} with an empty
+ # value
+ push @{$result->{$_}}, @partial_result if @partial_result;
+ }
+
+ return $result;
+}
+
+=item B<get_config> I<LIST>
+
+LIST is expected to be the collection of names of configuration data, such
+as build_infos, sourcedir, ...
+
+The returned result is a hash table reference, with each key being one of
+these configuration data names, and its value being a reference to the value
+corresponding to that name.
+
+=cut
+
+sub get_config {
+ my $self = shift;
+
+ return { map { $_ => $self->{config}->{$_} } @_ };
+}
+
+########
+#
+# Helper functions
+#
+
+sub _check_accepted_options {
+ my $opts = shift; # HASH reference (hopefully)
+ my %conds = @_; # key => type
+
+ my @messages;
+ my %optnames = map { $_ => 1 } keys %$opts;
+ foreach (keys %conds) {
+ delete $optnames{$_};
+ }
+ push @messages, "Unknown options: " . join(', ', sort keys %optnames)
+ if keys %optnames;
+ foreach (sort keys %conds) {
+ push @messages, "'$_' value not a $conds{$_} reference"
+ if (defined $conds{$_} && defined $opts->{$_}
+ && ref $opts->{$_} ne $conds{$_});
+ }
+ return @messages;
+}
+
+1;
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