Patch in dnsexit support

Patch from here https://sourceforge.net/p/ddclient/discussion/399428/thread/04e23ee6/ hacked back in.

ddclient

@@ -483,6 +483,12 @@ my %variables = (
         'warned-min-interval'       => setv(T_ANY,    0, 1, 0, 0,             undef),
         'warned-min-error-interval' => setv(T_ANY,    0, 1, 0, 0,             undef),
     },
+		'dnsexit-common-defaults'       => {
+		'ssl'         => setv(T_BOOL,    0, 1, 0, 0, undef),
+		'use'         => setv(T_USE,  0, 1, 1, 'web',undef),
+		'server'      => setv(T_FQDNP,  0, 1, 1, 'update.dnsexit.com', undef),
+		'script'      => setv(T_STRING,  0, 1, 1, '/RemoteUpdate.sv', undef),
++    },
 );
 my %services = (
     'dyndns1' => {
@@ -685,6 +691,15 @@ my %services = (
             $variables{'woima-service-common-defaults'},
         ),
     },
+	'dnsexit' => {
+	'updateable' => undef,
+	'update'     => \&nic_dnsexit_update,
+	'examples'   => \&nic_dnsexit_examples,
+	'variables'  => merge(
+			$variables{'dnsexit-common-defaults'},
+			$variables{'service-common-defaults'},
+		),
+	},
 );
 $variables{'merged'} = merge($variables{'global-defaults'},
 			     $variables{'service-common-defaults'},
@@ -4670,8 +4685,88 @@ sub nic_woima_update {
             if $state ne 'results2';
     }
 }
+######################################################################
+## nic_dnsexit_examples
+######################################################################
+sub nic_dnsexit_examples {
+    return <<EoEXAMPLE; 
+o 'dnsexit'
                           
+The 'dnsexit' protocol is the protocol used by the dynamic hostname services
+of the 'DnsExit' dns services. This is currently used by the free
+dynamic DNS service offered by www.dnsexit.com.
     
+Configuration variables applicable to the 'dnsexit' protocol are:
+  ssl=no                       ## turn off ssl
+  protocol=dnsexit             ## 
+  server=update.dnsexit.com    ## defaults to update.dnsexit.com
+  use=web                      ## defaults to web
+  web=update.dnsexit.com       ## defaults to update.dnsexit.com
+  script=/RemoteUpdate.sv      ## defaults to /RemoteUpdate.sv
+  login=service-userid         ## userid registered with the service
+  password=service-password    ## password registered with the service
+  fully.qualified.host         ## the host registered with the service.
+
+Example ${program}.conf file entries:
+  ## single host update
+  protocol=dnsexit             \\ 
+  login=service-userid         \\
+  password=service-password    \\
+  fully.qualified.host
+                        
+EoEXAMPLE
+}
++######################################################################
++## nic_dnsexit_update
++## modified copy of nic_dtns_update above
++## by Dan Campbell
++######################################################################
+sub nic_dnsexit_update {
+    debug("\nnic_dnsexit_update -------------------");
+
+    ## update each configured host
+    foreach my $h (@_) {
+	my $ip = delete $config{$h}{'wantip'};
+        info("setting IP address to %s for %s", $ip, $h);
+        verbose("UPDATE:","updating %s", $h);
+		
+        # Set the URL that we're going to update
+        my $url;
+        $url  = "http://$config{$h}{'server'}$config{$h}{'script'}";
+        $url .= "?login=";
+        $url .= $config{$h}{'login'};
+        $url .= "&password=";
+        $url .= $config{$h}{'password'};
+        $url .= "&host=";
+        $url .= $h;
+
+        # Try to get URL
+        my $reply = geturl(opt('proxy'), $url);
+
+        # No response, declare as failed
+        if (!defined($reply) || !$reply) {
+            failed("updating %s: Could not connect to %s.", $h, $config{$h}{'server'});
+            last;
+        }
+        last if !header_ok($h, $reply);
+
+        # Response found, just declare as success (this is ugly, we need more error checking)
+        if ($reply =~ /success/i)
+        {
+            $config{$h}{'ip'}     = $ip;
+            $config{$h}{'mtime'}  = $now;
+            $config{$h}{'status'} = 'good';
+            success("updating %s: good: IP address set to %s", $h, $ip);
+         }
+         else
+         {
+            my @reply = split /\n/, $reply;
+            my $returned = pop(@reply);
+            $config{$h}{'status'} = 'failed';
+            failed("updating %s: Server said: '$returned'", $h);
+         }
+    }
+}
 ######################################################################
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