From 0375f70b5c0ca41dcf3d1fe2261170adf695fc47 Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Mon, 18 Jan 2010 02:32:48 +0000
Subject: [PATCH] add serverfactors() sub which returns server characterization
 factors

---
 tests/serverhelp.pm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/tests/serverhelp.pm b/tests/serverhelp.pm
index 53aeb79cb..d34a821a1 100644
--- a/tests/serverhelp.pm
+++ b/tests/serverhelp.pm
@@ -47,6 +47,7 @@ use vars qw(
 # Global symbols this module will export upon request
 #
 @EXPORT_OK = qw(
+    serverfactors
     servername_id
     servername_str
     servername_canon
@@ -62,6 +63,32 @@ use vars qw(
     );
 
 
+#***************************************************************************
+# Return server characterization factors given a server id string.
+#
+sub serverfactors {
+    my $server = $_[0];
+    my $proto;
+    my $ipvnum;
+    my $idnum;
+
+    if($server =~ /^((ftp|http|imap|pop3|smtp)s?)(\d*)(-ipv6|)$/) {
+        $proto  = $1;
+        $idnum  = ($3 && ($3 > 1)) ? $3 : 1;
+        $ipvnum = ($4 && ($4 =~ /6$/)) ? 6 : 4;
+    }
+    elsif($server =~ /^(tftp|sftp|socks|ssh)(\d*)(-ipv6|)$/) {
+        $proto  = $1;
+        $idnum  = ($2 && ($2 > 1)) ? $2 : 1;
+        $ipvnum = ($3 && ($3 =~ /6$/)) ? 6 : 4;
+    }
+    else {
+        die "invalid server id: $server"
+    }
+    return($proto, $ipvnum, $idnum);
+}
+
+
 #***************************************************************************
 # Return server name string formatted for presentation purposes
 #