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-rw-r--r--xfce4-session/xfsm-dns.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/xfce4-session/xfsm-dns.c b/xfce4-session/xfsm-dns.c
new file mode 100644
index 0000000..abb9cef
--- /dev/null
+++ b/xfce4-session/xfsm-dns.c
@@ -0,0 +1,176 @@
+/* $Id$ */
+/*-
+ * Copyright (c) 2004 Benedikt Meurer <benny@xfce.org>
+ * All rights reserved.
+ *
+ * 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, 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.
+ *
+ * Parts of this file where taken from gnome-session/main.c, which
+ * was written by Tom Tromey.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UTSNAME_H
+#include <sys/utsname.h>
+#endif
+
+#ifdef HAVE_MEMORY_H
+#include <memory.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <gtk/gtk.h>
+
+#include <libxfce4ui/libxfce4ui.h>
+
+#include <libxfsm/xfsm-util.h>
+
+#include <xfce4-session/xfsm-dns.h>
+#include <xfce4-session/xfsm-global.h>
+
+
+static gchar*
+queryhostname (gchar *buffer, gsize length, gboolean readable)
+{
+#ifdef HAVE_GETHOSTNAME
+ if (gethostname (buffer, length) == 0)
+ return buffer;
+#else
+ struct utsname utsname;
+ if (uname (&utsname) == 0)
+ {
+ g_strlcpy (buffer, utsname.nodename, length);
+ return buffer;
+ }
+#endif
+ if (readable)
+ {
+ g_strlcpy (buffer, _("(Unknown)"), length);
+ return buffer;
+ }
+ return NULL;
+}
+
+
+static gboolean
+check_for_dns (void)
+{
+#ifdef HAVE_GETADDRINFO
+ struct addrinfo *result = NULL;
+ struct addrinfo hints;
+#endif
+ char buffer[256];
+ gchar *hostname;
+
+ hostname = queryhostname (buffer, 256, FALSE);
+ if (hostname == NULL)
+ return FALSE;
+
+#ifdef HAVE_GETADDRINFO
+ bzero (&hints, sizeof (hints));
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_CANONNAME;
+
+ if (getaddrinfo (hostname, NULL, &hints, &result) != 0)
+ return FALSE;
+
+ if (g_ascii_strncasecmp (result->ai_canonname, hostname, 0) != 0)
+ return FALSE;
+#else
+#ifdef HAVE_GETHOSTBYNAME
+ if (gethostbyname (hostname) == NULL)
+ {
+ return FALSE;
+ }
+#endif
+#endif
+
+ return TRUE;
+}
+
+
+enum
+{
+ RESPONSE_LOG_IN,
+ RESPONSE_TRY_AGAIN,
+};
+
+
+void
+xfsm_dns_check (void)
+{
+ GtkWidget *msgbox = NULL;
+ gchar hostname[256];
+ gint response;
+
+ while (!check_for_dns ())
+ {
+ if (msgbox == NULL)
+ {
+ GdkScreen *screen = xfce_gdk_screen_get_active (NULL);
+
+ queryhostname (hostname, 256, TRUE);
+
+ msgbox = gtk_message_dialog_new (NULL, 0,
+ GTK_MESSAGE_WARNING,
+ GTK_BUTTONS_NONE,
+ _("Could not look up internet address for %s.\n"
+ "This will prevent Xfce from operating correctly.\n"
+ "It may be possible to correct the problem by adding\n"
+ "%s to the file /etc/hosts on your system."),
+ hostname, hostname);
+
+ gtk_dialog_add_buttons (GTK_DIALOG (msgbox),
+ _("Continue anyway"), RESPONSE_LOG_IN,
+ _("Try again"), RESPONSE_TRY_AGAIN,
+ NULL);
+
+ gtk_window_set_screen (GTK_WINDOW (msgbox), screen);
+ xfsm_window_add_border (GTK_WINDOW (msgbox));
+ gtk_window_set_position (GTK_WINDOW (msgbox), GTK_WIN_POS_CENTER);
+ }
+
+ gtk_dialog_set_default_response (GTK_DIALOG (msgbox), RESPONSE_TRY_AGAIN);
+
+ response = xfsm_splash_screen_run (splash_screen, msgbox);
+ if (response != RESPONSE_TRY_AGAIN)
+ break;
+
+ gtk_widget_hide (msgbox);
+ }
+
+ if (msgbox != NULL)
+ gtk_widget_destroy (msgbox);
+}
+
+