From bfc3b4ffd6fab946c34e567d0afa8ea132e01f24 Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Sun, 2 Dec 2018 13:53:47 +0100
Subject: [PATCH] util/perl/OpenSSL/Ordinals.pm: introduce a base version

The idea is that a base version is the minimum version that must be
assigned to all symbols.  The practical result is that, for any new
major release, the version number for all symbols will automatically
be bumped to the new release's version number, if necessary.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7740)
---
 util/perl/OpenSSL/Ordinals.pm | 68 ++++++++++++++++++++++++++++++++---
 1 file changed, 63 insertions(+), 5 deletions(-)

diff --git a/util/perl/OpenSSL/Ordinals.pm b/util/perl/OpenSSL/Ordinals.pm
index 06bf7b0ac4..c26a866493 100644
--- a/util/perl/OpenSSL/Ordinals.pm
+++ b/util/perl/OpenSSL/Ordinals.pm
@@ -12,6 +12,7 @@ use strict;
 use warnings;
 use Carp;
 use Scalar::Util qw(blessed);
+use OpenSSL::Util;
 
 use constant {
     # "magic" filters, see the filters at the end of the file
@@ -90,11 +91,11 @@ sub new {
         name2num        => {},    # Name to number dictionary
         aliases         => {},    # Aliases cache.
         stats           => {},    # Statistics, see 'sub validate'
-        currversion     => $opts{version} // '*', # '*' is for "we don't care"
         debug           => $opts{debug},
     };
     bless $instance, $class;
 
+    $instance->set_version($opts{version});
     $instance->load($opts{from}) if defined($opts{from});
 
     return $instance;
@@ -368,6 +369,18 @@ sub _parse_features {
     return %features;
 }
 
+sub _adjust_version {
+    my $self = shift;
+    my $version = shift;
+    my $baseversion = $self->{baseversion};
+
+    $version = $baseversion
+        if ($baseversion ne '*' && $version ne '*'
+            && cmp_versions($baseversion, $version) > 0);
+
+    return $version;
+}
+
 =item B<$ordinals-E<gt>add NAME, TYPE, LIST>
 
 Adds a new item named NAME with the type TYPE, and a set of C macros in
@@ -410,7 +423,8 @@ sub add {
         OpenSSL::Ordinals::Item->new( name          => $name,
                                       type          => $type,
                                       number        => $number,
-                                      version       => $version,
+                                      version       =>
+                                          $self->_adjust_version($version),
                                       exists        => 1,
                                       platforms     => { %platforms },
                                       features      => [
@@ -497,7 +511,7 @@ sub add_alias {
             name          => $alias,
             type          => $items[0]->type(),
             number        => $items[0]->number(),
-            version       => $items[0]->version(),
+            version       => $self->_adjust_version($items[0]->version()),
             exists        => $items[0]->exists(),
             platforms     => { %platforms },
             features      => [ $items[0]->features() ]
@@ -518,17 +532,61 @@ sub add_alias {
 
 =item B<$ordinals-E<gt>set_version VERSION>
 
+=item B<$ordinals-E<gt>set_version VERSION BASEVERSION>
+
 Sets the default version for new symbol to VERSION.
 
+If given, BASEVERSION sets the base version, i.e. the minimum version
+for all symbols.  If not given, it will be calculated as follows:
+
+=over 4
+
+If the given version is '*', then the base version will also be '*'.
+
+If the given version starts with '0.', the base version will be '0.0.0'.
+
+If the given version starts with '1.0.', the base version will be '1.0.0'.
+
+If the given version starts with '1.1.', the base version will be '1.1.0'.
+
+If the given version has a first number C<N> that's greater than 1, the
+base version will be formed from C<N>: 'N.0.0'.
+
+=back
+
 =cut
 
 sub set_version {
     my $self = shift;
-    my $version = shift;
+    # '*' is for "we don't care"
+    my $version = shift // '*';
+    my $baseversion = shift // '*';
 
-    $version //= '*';
     $version =~ s|-.*||g;
+
+    if ($baseversion eq '*') {
+        $baseversion = $version;
+        if ($baseversion ne '*') {
+            if ($baseversion =~ m|^(\d+)\.|, $1 > 1) {
+                $baseversion = "$1.0.0";
+            } else {
+                $baseversion =~ s|^0\..*$|0.0.0|;
+                $baseversion =~ s|^1\.0\..*$|1.0.0|;
+                $baseversion =~ s|^1\.1\..*$|1.1.0|;
+
+                die 'Invalid version'
+                    if ($baseversion ne '0.0.0'
+                        && $baseversion !~ m|^1\.[01]\.0$|);
+            }
+        }
+    }
+
+    die 'Invalid base version'
+        if ($baseversion ne '*' && $version ne '*'
+            && cmp_versions($baseversion, $version) > 0);
+
     $self->{currversion} = $version;
+    $self->{baseversion} = $baseversion;
     foreach ($self->items(filter => sub { $_[0] eq '*' })) {
         $_->{version} = $self->{currversion};
     }
-- 
2.25.1