update OUI data when DB schema is updated

Netdisco/bin/netdisco-db-deploy

@@ -6,9 +6,10 @@ use warnings FATAL => 'all';
 use Dancer ':script';
 use Dancer::Plugin::DBIC 'schema';
 
+use HTTP::Tiny;
 use Try::Tiny;
 
-=head1 upgrade_netdisco_schema_version
+=head1 netdisco-db-deploy
 
 This script upgrades or initialises a Netdisco database schema.
 
@@ -22,6 +23,10 @@ interaction. If there's no Nedisco schema, it is deployed. If there's an
 unversioned schema then versioning is added, and updates applied.  Otherwise
 only necessary updates are applied to an already versioned schema.
 
+Additionally this script will download the latest MAC address vendor prefix
+data from the Internet, and update the OUI table in the database. Hence
+Internet access is required to run the script.
+
 =head2 Versions
 
 =over 4
@@ -70,4 +75,29 @@ try {
 # upgrade from whatever dbix_class_schema_versions says, to $VERSION
 $schema->txn_do(sub { $schema->upgrade });
 
+# now populate/update the OUI data
+
+my $url = 'http://standards.ieee.org/develop/regauth/oui/oui.txt';
+my $resp = HTTP::Tiny->new->get($url);
+my %data = ();
+
+if ($resp->{success}) {
+    foreach my $line (split /\n/, $resp->{content}) {
+        if ($line =~ m/^(.{2}-.{2}-.{2})\s+\(hex\)\s+(.*)\s*$/i) {
+            my ($oui, $company) = ($1, $2);
+            $oui =~ s/-/:/g;
+            $data{lc($oui)} = $company;
+        }
+    }
+
+    if ((scalar keys %data) > 15_000) {
+        $schema->txn_do(sub{
+          $schema->resultset('Oui')->delete;
+          $schema->resultset('Oui')->populate([
+            map {{oui => $_, company => $data{$_}}} keys %data
+          ]);
+        });
+    }
+}
+
 exit 0;