printers: Don't request port during creation of PpHost

This allows us to distinguish between situations when the port
was specified and when it was not.

https://bugzilla.gnome.org/show_bug.cgi?id=695564

panels/printers/pp-host.c

@@ -119,7 +119,7 @@ pp_host_class_init (PpHostClass *klass)
     g_param_spec_int ("port",
                       "Port",
                       "The port",
-                      0, G_MAXINT32, 631,
+                      -1, G_MAXINT32, PP_HOST_UNSET_PORT,
                       G_PARAM_READWRITE));
 }
 
@@ -129,15 +129,14 @@ pp_host_init (PpHost *host)
   host->priv = G_TYPE_INSTANCE_GET_PRIVATE (host,
                                             PP_TYPE_HOST,
                                             PpHostPrivate);
+  host->priv->port = PP_HOST_UNSET_PORT;
 }
 
 PpHost *
-pp_host_new (const gchar *hostname,
+pp_host_new (const gchar *hostname)
-             gint         port)
 {
   return g_object_new (PP_TYPE_HOST,
                        "hostname", hostname,
-                       "port", port,
                        NULL);
 }
 
@@ -380,14 +379,20 @@ _pp_host_get_remote_cups_devices_thread (GSimpleAsyncResult *res,
   PpPrintDevice *device;
   http_t        *http;
   gint           num_of_devices = 0;
+  gint           port;
   gint           i;
 
   data = g_simple_async_result_get_op_res_gpointer (res);
   data->devices = g_new0 (PpDevicesList, 1);
   data->devices->devices = NULL;
 
+  if (priv->port == PP_HOST_UNSET_PORT)
+    port = PP_HOST_DEFAULT_IPP_PORT;
+  else
+    port = priv->port;
+
   /* Connect to remote CUPS server and get its devices */
-  http = httpConnect (priv->hostname, priv->port);
+  http = httpConnect (priv->hostname, port);
   if (http)
     {
       num_of_devices = cupsGetDests2 (http, &dests);
@@ -399,14 +404,14 @@ _pp_host_get_remote_cups_devices_thread (GSimpleAsyncResult *res,
               device->device_class = g_strdup ("network");
               device->device_uri = g_strdup_printf ("ipp://%s:%d/printers/%s",
                                            priv->hostname,
-                                           priv->port,
+                                           port,
                                            dests[i].name);
               device->device_name = g_strdup (dests[i].name);
               device->device_location = g_strdup (cupsGetOption ("printer-location",
                                                         dests[i].num_options,
                                                         dests[i].options));
               device->host_name = g_strdup (priv->hostname);
-              device->host_port = priv->port;
+              device->host_port = port;
               device->acquisition_method = ACQUISITION_METHOD_REMOTE_CUPS_SERVER;
               data->devices->devices = g_list_append (data->devices->devices, device);
             }

panels/printers/pp-host.h

@@ -34,6 +34,9 @@ G_BEGIN_DECLS
 #define PP_IS_HOST_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), PP_TYPE_HOST))
 #define PP_HOST_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), PP_TYPE_HOST, PpHostClass))
 
+#define PP_HOST_UNSET_PORT        -1
+#define PP_HOST_DEFAULT_IPP_PORT 631
+
 typedef struct _PpHost        PpHost;
 typedef struct _PpHostClass   PpHostClass;
 typedef struct _PpHostPrivate PpHostPrivate;
@@ -51,8 +54,7 @@ struct _PpHostClass
 
 GType          pp_host_get_type                       (void) G_GNUC_CONST;
 
-PpHost        *pp_host_new                            (const gchar          *hostname,
+PpHost        *pp_host_new                            (const gchar          *hostname);
-                                                       gint                  port);
 
 void           pp_host_get_snmp_devices_async         (PpHost               *host,
                                                        GCancellable         *cancellable,

panels/printers/pp-new-printer-dialog.c

@@ -1263,9 +1263,9 @@ parse_uri (const gchar  *uri,
 {
   const gchar *tmp = NULL;
   gchar       *resulting_host = NULL;
-  gchar       *port_string = NULL;
   gchar       *position;
-  int          resulting_port = 631;
+
+  *port = PP_HOST_UNSET_PORT;
 
   if (g_strrstr (uri, "://"))
     tmp = g_strrstr (uri, "://") + 3;
@@ -1287,14 +1287,10 @@ parse_uri (const gchar  *uri,
   if ((position = g_strrstr (resulting_host, ":")))
     {
       *position = '\0';
-      port_string = position + 1;
+      *port = atoi (position + 1);
     }
 
-  if (port_string)
-    resulting_port = atoi (port_string);
-
   *host = resulting_host;
-  *port = resulting_port;
 
   return TRUE;
 }
@@ -1326,8 +1322,15 @@ search_for_remote_printers (THostSearchData *data)
 
   priv->remote_host_cancellable = g_cancellable_new ();
 
-  priv->remote_cups_host = pp_host_new (data->host_name, data->host_port);
+  priv->remote_cups_host = pp_host_new (data->host_name);
-  priv->snmp_host = pp_host_new (data->host_name, data->host_port);
+  priv->snmp_host = pp_host_new (data->host_name);
+
+  if (data->host_port != PP_HOST_UNSET_PORT)
+    {
+      g_object_set (priv->remote_cups_host, "port", data->host_port, NULL);
+      g_object_set (priv->snmp_host, "port", data->host_port, NULL);
+    }
+
   priv->samba_host = pp_samba_new (GTK_WINDOW (priv->dialog),
                                    data->host_name);
 
@@ -1456,7 +1459,7 @@ search_address (const gchar        *text,
       if (text && text[0] != '\0')
         {
           gchar *host = NULL;
-          gint   port = 631;
+          gint   port;
 
           parse_uri (text, &host, &port);