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package Crypt::OpenSSL::Guess;
use 5.008001;
use strict;
use warnings;
our $VERSION = "0.14";
use Config;
use English qw( $OSNAME -no_match_vars );
use File::Spec;
use Symbol qw(gensym);
use Exporter 'import';
our @EXPORT = qw(openssl_inc_paths openssl_lib_paths find_openssl_prefix find_openssl_exec openssl_version);
sub openssl_inc_paths {
my $prefix = find_openssl_prefix();
my $exec = find_openssl_exec($prefix);
return '' unless -x $exec;
my @inc_paths;
my @try_includes = (
'include' => sub { 1 },
'inc32' => sub { $OSNAME eq 'MSWin32' },
);
while (
!@inc_paths
&& defined( my $dir = shift @try_includes )
&& defined( my $cond = shift @try_includes )
) {
if ( $cond->() && -f "$prefix/$dir/openssl/ssl.h" ) {
@inc_paths = "$prefix/$dir";
}
}
return join ' ', map { "-I$_" } @inc_paths;
}
sub openssl_lib_paths {
my $prefix = find_openssl_prefix();
my $exec = find_openssl_exec($prefix);
return '' unless -x $exec;
my @lib_paths;
for ($prefix, "$prefix/lib64", "$prefix/lib", "$prefix/out32dll") {
push @lib_paths, $_ if -d $_;
}
if ($^O eq 'MSWin32') {
push @lib_paths, "$prefix/lib/VC" if -d "$prefix/lib/VC";
my $found = 0;
my @pairs = ();
# Library names depend on the compiler
@pairs = (['eay32','ssl32'],['crypto.dll','ssl.dll'],['crypto','ssl']) if $Config{cc} =~ /gcc/;
@pairs = (['libeay32','ssleay32'],['libeay32MD','ssleay32MD'],['libeay32MT','ssleay32MT'],['libcrypto','libssl'],['crypto','ssl']) if $Config{cc} =~ /cl/;
for my $dir (@lib_paths) {
for my $p (@pairs) {
$found = 1 if ($Config{cc} =~ /gcc/ && -f "$dir/lib$p->[0].a" && -f "$dir/lib$p->[1].a");
$found = 1 if ($Config{cc} =~ /cl/ && -f "$dir/$p->[0].lib" && -f "$dir/$p->[1].lib");
if ($found) {
@lib_paths = ($dir);
last;
}
}
}
}
elsif ($^O eq 'darwin') {
for my $dir (@lib_paths) {
if (-f "$dir/libcrypto.dylib" && -f "$dir/libssl.dylib") {
@lib_paths = ($dir);
last;
}
}
}
elsif ($^O eq 'VMS') {
if (-r 'sslroot:[000000]openssl.cnf') { # openssl.org source install
@lib_paths = ('SSLLIB');
}
elsif (-r 'ssl1$root:[000000]openssl.cnf') { # VSI or HPE SSL1 install
@lib_paths = ('SYS$SHARE');
}
elsif (-r 'ssl$root:[000000]openssl.cnf') { # HP install
@lib_paths = ('SYS$SHARE');
}
}
return join ' ', map { "-L$_" } @lib_paths;
}
my $other_try = 0;
my @nopath;
sub check_no_path { # On OS/2 it would be typically on default paths
my $p;
if (not($other_try++) and $] >= 5.008001) {
use ExtUtils::MM;
my $mm = MM->new();
my ($list) = $mm->ext("-lssl");
return unless $list =~ /-lssl\b/;
for $p (split /\Q$Config{path_sep}/, $ENV{PATH}) {
@nopath = ("$p/openssl$Config{_exe}", # exe name
'.') # dummy lib path
if -x "$p/openssl$Config{_exe}"
}
}
@nopath;
}
sub find_openssl_prefix {
my ($dir) = @_;
if (defined $ENV{OPENSSL_PREFIX}) {
return $ENV{OPENSSL_PREFIX};
}
# Homebrew (macOS) or LinuxBrew
if ($^O ne 'MSWin32' and my $prefix = `brew --prefix --installed openssl 2>@{[File::Spec->devnull]}`) {
chomp $prefix;
return $prefix;
}
my @guesses = (
'/home/linuxbrew/.linuxbrew/opt/openssl/bin/openssl' => '/home/linuxbrew/.linuxbrew/opt/openssl', # LinuxBrew openssl
'/opt/homebrew/opt/openssl/bin/openssl' => '/opt/homebrew/opt/openssl', # macOS ARM homebrew
'/usr/local/opt/openssl/bin/openssl' => '/usr/local/opt/openssl', # OSX homebrew openssl
'/usr/local/bin/openssl' => '/usr/local', # OSX homebrew openssl
'/opt/local/bin/openssl' => '/opt/local', # Macports openssl
'/usr/bin/openssl' => '/usr',
'/usr/sbin/openssl' => '/usr',
'/opt/ssl/bin/openssl' => '/opt/ssl',
'/opt/ssl/sbin/openssl' => '/opt/ssl',
'/usr/local/ssl/bin/openssl' => '/usr/local/ssl',
'/usr/local/openssl/bin/openssl' => '/usr/local/openssl',
'/apps/openssl/std/bin/openssl' => '/apps/openssl/std',
'/usr/sfw/bin/openssl' => '/usr/sfw', # Open Solaris
'C:\OpenSSL\bin\openssl.exe' => 'C:\OpenSSL',
'C:\OpenSSL-Win32\bin\openssl.exe' => 'C:\OpenSSL-Win32',
$Config{prefix} . '\bin\openssl.exe' => $Config{prefix}, # strawberry perl
$Config{prefix} . '\..\c\bin\openssl.exe' => $Config{prefix} . '\..\c', # strawberry perl
'/sslexe/openssl.exe' => '/sslroot', # VMS, openssl.org
'/ssl1$exe/openssl.exe' => '/ssl1$root',# VMS, VSI or HPE install
'/ssl$exe/openssl.exe' => '/ssl$root', # VMS, HP install
);
while (my $k = shift @guesses
and my $v = shift @guesses) {
if ( -x $k ) {
return $v;
}
}
(undef, $dir) = check_no_path()
and return $dir;
return;
}
sub find_openssl_exec {
my ($prefix) = @_;
my $exe_path;
for my $subdir (qw( bin sbin out32dll ia64_exe alpha_exe )) {
my $path = File::Spec->catfile($prefix, $subdir, "openssl$Config{_exe}");
if ( -x $path ) {
return $path;
}
}
($prefix) = check_no_path()
and return $prefix;
return;
}
sub openssl_version {
my ($major, $minor, $letter);
my $prefix = find_openssl_prefix();
my $exec = find_openssl_exec($prefix);
return unless -x $exec;
{
my $pipe = gensym();
open($pipe, qq{"$exec" version |})
or die "Could not execute $exec";
my $output = <$pipe>;
chomp $output;
close $pipe;
if ( ($major, $minor, $letter) = $output =~ /^OpenSSL\s+(\d+\.\d+)\.(\d+)([a-z]?)/ ) {
} elsif ( ($major, $minor) = $output =~ /^LibreSSL\s+(\d+\.\d+)(?:\.(\d+))?/ ) {
# LibreSSL 2.0.x releases only identify themselves as "LibreSSL 2.0",
# with no patch release number
if ( !defined $minor ) {
$minor = "x";
}
} else {
die <<EOM
*** OpenSSL version test failed
(`$output' has been returned)
Either you have bogus OpenSSL or a new version has changed the version
number format. Please inform the authors!
EOM
}
}
return ($major, $minor, $letter);
}
1;
__END__
=encoding utf-8
=head1 NAME
Crypt::OpenSSL::Guess - Guess OpenSSL include path
=head1 SYNOPSIS
use ExtUtils::MakerMaker;
use Crypt::OpenSSL::Guess;
WriteMakefile(
# ...
LIBS => ['-lssl -lcrypto ' . openssl_lib_paths()],
INC => openssl_inc_paths(), # guess include path or get from $ENV{OPENSSL_PREFIX}
);
=head1 DESCRIPTION
Crypt::OpenSSL::Guess provides helpers to guess OpenSSL include path on any platforms.
Often macOS's homebrew OpenSSL cause a problem on installation due to include path is not added.
Some CPAN module provides to modify include path with configure-args, but L<Carton> or L<Module::CPANfile>
is not supported to pass configure-args to each modules. Crypt::OpenSSL::* modules should use it on your L<Makefile.PL>.
This module resolves the include path by L<Net::SSLeay>'s workaround.
Original code is taken from C<inc/Module/Install/PRIVATE/Net/SSLeay.pm> by L<Net::SSLeay>.
=head1 FUNCTIONS
=over 4
=item openssl_inc_paths()
This functions returns include paths in the format passed to CC. If OpenSSL could not find, then empty string is returned.
openssl_inc_paths(); # on macOS: "-I/usr/local/opt/openssl/include"
=item openssl_lib_paths()
This functions returns library paths in the format passed to CC. If OpenSSL could not find, then empty string is returned.
openssl_lib_paths(); # on macOS: "-L/usr/local/opt/openssl/lib"
=item find_openssl_prefix([$dir])
This function returns OpenSSL's prefix. If set C<OPENSSL_PREFIX> environment variable, you can overwrite the return value.
find_openssl_prefix(); # on macOS: "/usr/local/opt/openssl"
=item find_openssl_exec($prefix)
This functions returns OpenSSL's executable path.
find_openssl_exec(); # on macOS: "/usr/local/opt/openssl/bin/openssl"
=item ($major, $minor, $letter) = openssl_version()
This functions returns OpenSSL's version as major, minor, letter.
openssl_version(); # ("1.0", "2", "n")
=back
=head1 SEE ALSO
L<Net::SSLeay>
=head1 LICENSE
Copyright (C) Takumi Akiyama.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 AUTHOR
Takumi Akiyama E<lt>t.akiym@gmail.comE<gt>
=cut
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