my $s_cert_filename = '/path/to/cert/mycert.pem';
my $s_chain_dir = '/path/to/root_and_itermediate/certs/';
#Initialization, because I read about it in cpan
my $rv = Net::SSLeay::library_init();
if($rv != 1) {die 'library init'};
Net::SSLeay::load_error_strings();
Net::SSLeay::SSLeay_add_ssl_algorithms();
#Create $ctx object
my $ctx = Net::SSLeay::CTX_new or die;
#Set where are root and intermediate certs
Net::SSLeay::CTX_load_verify_locations($ctx, '', $s_chain_dir)
or die_now("CTX load verify loc=`$s_chain_dir' $!");
#Set where is the certificate to be checked
$rv = Net::SSLeay::CTX_use_certificate_file($ctx, $s_filename,
&Net::SSLeay::FILETYPE_PEM);
if($rv != 1) {die 'CTX_use_certificate_file'}
#Create $ssl object from $ctx object
my $ssl = Net::SSLeay::new($ctx);
#Try to get verification result
$rv = Net::SSLeay::get_verify_result($ssl);
print $rv;
####
my $s_cert_filename = '/path/to/cert/mycert.pem';
my $s_chain_dir = '/path/to/root_and_itermediate/certs/';
#Initialization
my $rv = Net::SSLeay::library_init();
if($rv != 1) {die 'library init'};
Net::SSLeay::ERR_load_SSL_strings();
Net::SSLeay::SSLeay_add_ssl_algorithms();
#Create $ctx object
my $ctx = Net::SSLeay::CTX_new() or
die_now("Failed to create SSL_CTX $!");
#Set where are root and intermediate certs
Net::SSLeay::CTX_load_verify_locations($ctx, '', $s_chain_dir) or
die_now("CTX load verify loc=`$s_chain_dir' $!");
#Create $ssl object from $ctx object
my $ssl = Net::SSLeay::new($ctx);
#Set where is the certificate to be checked
$rv = Net::SSLeay::use_certificate_file($ssl, $s_filename,
&Net::SSLeay::FILETYPE_PEM);
#get x509_store and set flag – to check crl
my $x509_store = Net::SSLeay::CTX_get_cert_store($ssl);
Net::SSLeay::X509_STORE_set_flags($ctx,
&Net::SSLeay::X509_V_FLAG_CRL_CHECK);
#Try to get verification result
$rv = Net::SSLeay::get_verify_result($ssl);
print $rv;
####
Net::SSLeay::CTX_free($ctx);