Quick hack to look at the Server header on endpoints, particularly th…

…e OpenSSL version declared (if any).

build/probe_openssl.pl

@@ -0,0 +1,92 @@
+#!/usr/bin/perl -w
+
+use ExtractCert;
+use Xalan;
+
+$known_bad{'census.data-archive.ac.uk:8080'} = 1; # it is really http, not https
+
+print "Loading endpoint locations...\n";
+open(XML, xalanCall . " -IN ../xml/ukfederation-metadata.xml -XSL extract_nocert_locs.xsl|") || die "could not open input file";
+while (<XML>) {
+	chop;
+	if (/^http:/) {
+		print "skipping http location: $_\n";
+	} elsif (/^https:\/\/([^\/:]+(:\d+)?)(\/|$)/) {
+		my $location = $1;
+		$location .= ":443" unless defined $2;
+		if ($known_bad{$location}) {
+			print "skipping known bad location: $_\n";
+		} else {
+			$locations{$location} = 1;
+		}
+	} else {
+		print "bad location: $_\n";
+	}
+}
+close XML;
+
+$count = scalar keys %locations;
+print "Unique SSL non-certificate locations: $count\n";
+
+#
+# Temporary output file for certificate extraction tool.
+#
+$temp_der = '/tmp/probe_nocerts.der';
+
+#
+# Extract the certificate from each location.
+#
+foreach $loc (sort keys %locations) {
+	print "$count: probing: $loc\n";
+	$count--;
+
+	#
+	# Remove any old copy of the DER file.
+	#
+	unlink $temp_der;
+
+	#
+	# Separate location into host and port.
+	#
+	my ($host, $port) = split(/:/, $loc);
+	#print "host: $host, port: $port\n";
+	my $hostPort = "$host:$port";
+
+	#
+	# Take a peek at the Server header to see if it says anything about old
+	# versions of OpenSSL.
+	#
+	$cmd = "curl --silent --connect-timeout 5 --head https://$hostPort |";
+	open(CURL, $cmd) || die "could not open curl subcommand";
+	undef $server;
+	undef $openssl;
+	while (<CURL>) {
+		if (/^Server:(.*)$/) {
+			$server = $1;
+		}
+	}
+	close CURL;
+	if (defined $server) {
+		# print "   server: $server\n";
+		if ($server =~ /OpenSSL\/([0-9a-z\.]+)/) {
+			$openssl = $1;
+		}
+	}
+	if (defined $openssl) {
+		print "   openssl: $openssl\n";
+		$openssl_used{$hostPort} = $openssl;
+	}
+}
+print "\n\n";
+
+print "OpenSSL versions detected:\n";
+foreach $hostPort (sort keys %openssl_used) {
+	my $version = $openssl_used{$hostPort};
+	print "   $version used at $hostPort\n";
+}
+print "\n";
+
+#
+# Clean up
+#
+unlink $temp_der;