1 files changed, 137 insertions, 0 deletions
diff --git a/panels/network/connection-editor/ce-netmask-entry.c b/panels/network/connection-editor/ce-netmask-entry.c
new file mode 100644
index 0000000..2fccf0f
--- /dev/null
+++ b/panels/network/connection-editor/ce-netmask-entry.c
@@ -0,0 +1,137 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2020 Canonical Ltd.
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <arpa/inet.h>
+#include <NetworkManager.h>
+
+#include "ce-netmask-entry.h"
+
+struct _CENetmaskEntry
+{
+  GtkEntry parent_instance;
+};
+
+static void ce_netmask_entry_editable_init (GtkEditableInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (CENetmaskEntry, ce_netmask_entry, GTK_TYPE_ENTRY,
+                         G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
+                                                ce_netmask_entry_editable_init))
+
+static gboolean
+parse_netmask (const char *str, guint32 *prefix)
+{
+  struct in_addr tmp_addr;
+  glong tmp_prefix;
+
+  /* Is it a prefix? */
+  errno = 0;
+  if (!strchr (str, '.'))
+    {
+      tmp_prefix = strtol (str, NULL, 10);
+      if (!errno && tmp_prefix >= 0 && tmp_prefix <= 32)
+        {
+          if (prefix != NULL)
+            *prefix = tmp_prefix;
+          return TRUE;
+        }
+    }
+
+  /* Is it a netmask? */
+  if (inet_pton (AF_INET, str, &tmp_addr) > 0)
+    {
+      if (prefix != NULL)
+        *prefix = nm_utils_ip4_netmask_to_prefix (tmp_addr.s_addr);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static void
+ce_netmask_entry_changed (GtkEditable *editable)
+{
+  CENetmaskEntry *self = CE_NETMASK_ENTRY (editable);
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (self));
+  if (ce_netmask_entry_is_valid (self))
+    gtk_style_context_remove_class (context, "error");
+  else
+    gtk_style_context_add_class (context, "error");
+}
+
+static void
+ce_netmask_entry_init (CENetmaskEntry *self)
+{
+}
+
+static void
+ce_netmask_entry_editable_init (GtkEditableInterface *iface)
+{
+  iface->changed = ce_netmask_entry_changed;
+}
+
+static void
+ce_netmask_entry_class_init (CENetmaskEntryClass *klass)
+{
+}
+
+CENetmaskEntry *
+ce_netmask_entry_new (void)
+{
+  return CE_NETMASK_ENTRY (g_object_new (ce_netmask_entry_get_type (), NULL));
+}
+
+gboolean
+ce_netmask_entry_is_empty (CENetmaskEntry *self)
+{
+  const gchar *text;
+
+  g_return_val_if_fail (CE_IS_NETMASK_ENTRY (self), FALSE);
+
+  text = gtk_editable_get_text (GTK_EDITABLE (self));
+  return text[0] == '\0';
+}
+
+gboolean
+ce_netmask_entry_is_valid (CENetmaskEntry *self)
+{
+  const gchar *text;
+
+  g_return_val_if_fail (CE_IS_NETMASK_ENTRY (self), FALSE);
+
+  text = gtk_editable_get_text (GTK_EDITABLE (self));
+  return text[0] == '\0' || parse_netmask (text, NULL);
+}
+
+guint32
+ce_netmask_entry_get_prefix (CENetmaskEntry *self)
+{
+  const gchar *text;
+  guint32 prefix = 0;
+
+  g_return_val_if_fail (CE_IS_NETMASK_ENTRY (self), 0);
+
+  text = gtk_editable_get_text (GTK_EDITABLE (self));
+  parse_netmask (text, &prefix);
+
+  return prefix;
+}