Add automatic software update checks for Win32 using WinSparkle. Add

preferences (currently hidden) to disable updates, set the update
frequency, and set the update "channel" (stable vs development). Add a
"Help" menu item to manually check for updates.

svn path=/trunk/; revision=47748

14 files changed, 319 insertions, 4 deletions

diff --git a/Makefile.nmake b/Makefile.nmake
index bf2b5888c7..507a925668 100644
--- a/Makefile.nmake
+++ b/Makefile.nmake
@@ -45,7 +45,7 @@ GENERATED_CFLAGS=\
 	/I.  /Iwiretap $(GLIB_CFLAGS) \
 	$(ZLIB_CFLAGS) /I$(PCAP_DIR)\include $(AIRPCAP_CFLAGS) \
 	$(C_ARES_CFLAGS) $(ADNS_CFLAGS) $(GNUTLS_CFLAGS) \
-	$(PYTHON_CFLAGS) $(SMI_CFLAGS) $(GEOIP_CFLAGS)
+	$(PYTHON_CFLAGS) $(SMI_CFLAGS) $(GEOIP_CFLAGS) $(WINSPARKLE_CFLAGS)
 
 CFLAGS=$(WARNINGS_ARE_ERRORS) $(GENERATED_CFLAGS)
 
@@ -80,6 +80,7 @@ wireshark_LIBS= wiretap\wiretap-$(WTAP_VERSION).lib \
 	$(GNUTLS_LIBS) \
 	$(PYTHON_LIBS) \
 	$(ZLIB_LIBS) \
+	$(WINSPARKLE_LIBS) \
 !IFDEF ENABLE_LIBWIRESHARK
 	epan\libwireshark.lib \
 !ELSE
@@ -440,6 +441,7 @@ config.h	: config.h.win32 config.nmake
 	    -e "s/@HAVE_SMI@/$(SMI_CONFIG)/" \
 	    -e "s/@HAVE_GEOIP@/$(GEOIP_CONFIG)/" \
 	    -e "s/@HAVE_GEOIP_V6@/$(GEOIP_V6_CONFIG)/" \
+	    -e "s/@HAVE_SOFTWARE_UPDATE@/$(WINSPARKLE_CONFIG)/" \
 	    -e "s/@INET6@/$(INET6_CONFIG)/" \
 	    -e "s/@HAVE_NTDDNDIS_H@/$(NTDDNDIS_CONFIG)/" \
 	    -e "s/@PCAP_NG_DEFAULT@/$(PCAP_NG_DEFAULT)/" \
@@ -471,6 +473,7 @@ KFW_DIR = $(KFW_DIR:\=/)
 LUA_DIR = $(LUA_DIR:\=/)
 PORTAUDIO_DIR = $(PORTAUDIO_DIR:\=/)
 GEOIP_DIR = $(GEOIP_DIR:\=/)
+WINSPARKLE_DIR = $(WINSPARKLE_DIR:\=/)
 
 INTL_DLL = $(INTL_DLL)
 
@@ -939,6 +942,10 @@ process_libs:
 	@$(SH) $(WIN_SETUP) "$(WIN_SETUP_OPT)" "$(WIRESHARK_LIB_DIR)" \
 		GeoIP-$(GEOIP_PKG)-$(WIRESHARK_TARGET_PLATFORM)ws GeoIP-$(GEOIP_PKG)-$(WIRESHARK_TARGET_PLATFORM)ws.zip
 !ENDIF
+!IFDEF WINSPARKLE_DIR
+	@$(SH) $(WIN_SETUP) "$(WIN_SETUP_OPT)" "$(WIRESHARK_LIB_DIR)" \
+		. WinSparkle-$(WINSPARKLE_PKG).zip
+!ENDIF
 !IFDEF HHC_DIR
 	@$(SH) $(WIN_SETUP) "$(WIN_SETUP_OPT)" "$(WIRESHARK_LIB_DIR)" \
 		user-guide user-guide-46501.zip
@@ -1015,6 +1022,7 @@ clean_setup:
     rm -r -f GeoIP-1.4.6-win??ws
     rm -r -f GeoIP-1.4.8-win??ws
     rm -r -f GeoIP-1.4.8-*-win??ws
+    rm -r -f WinSparkle-0.3-44-g2c8d9d3-win??ws
     rm -r -f WpdPack
     cd "$(MAKEDIR)"
 
@@ -1261,6 +1269,9 @@ install-all: install-generated-files
 !IFDEF GEOIP_DIR
 	xcopy "$(GEOIP_DIR)\bin\libGeoip-1.dll" $(INSTALL_DIR) /d
 !ENDIF
+!IFDEF WINSPARKLE_DIR
+	xcopy "$(WINSPARKLE_DIR)\WinSparkle.dll" $(INSTALL_DIR) /d
+!ENDIF
 	cd $(INSTALL_DIR)
 	peflags --dynamicbase=true --nxcompat=true *.dll
 !IF "$(GTK_INST_VERSION)" == "3.4"
diff --git a/config.h.win32 b/config.h.win32
index 67d7eeec71..835d4d9df2 100644
--- a/config.h.win32
+++ b/config.h.win32
@@ -222,6 +222,9 @@
 /* Define if GeoIP supports IPv6 (GeoIP 1.4.5 and later) */
 @HAVE_GEOIP_V6@
 
+/* Define to enable WinSparkle software updates */
+@HAVE_SOFTWARE_UPDATE@
+
 /* Define for IPv6 */
 @INET6@
 
diff --git a/config.nmake b/config.nmake
index 3032deb05d..c07bf44a86 100644
--- a/config.nmake
+++ b/config.nmake
@@ -445,6 +445,13 @@ SMI_PKG=svn-40773
 #
 GEOIP_PKG=1.4.8-2
 
+#
+# Optional: WinSparkle, software updates
+#
+# Used for automatic software updates
+#
+WINSPARKLE_PKG=0.3-44-g2c8d9d3-win32ws
+
 !else
 ##### Win64 Libraries #####
 #
@@ -1481,6 +1488,18 @@ GEOIP_CONFIG=
 GEOIP_V6_CONFIG=
 !ENDIF
 
+!IFDEF WINSPARKLE_PKG
+WINSPARKLE_DIR=$(WIRESHARK_LIB_DIR)\WinSparkle-$(WINSPARKLE_PKG)
+WINSPARKLE_CONFIG=^#define HAVE_SOFTWARE_UPDATE 1
+WINSPARKLE_CFLAGS=/I$(WINSPARKLE_DIR)
+WINSPARKLE_LIBS=$(WINSPARKLE_DIR)\WinSparkle.lib
+!ELSE
+WINSPARKLE_DIR=
+WINSPARKLE_CONFIG=
+WINSPARKLE_CFLAGS=
+WINSPARKLE_LIBS=
+!ENDIF
+
 !IFDEF ENABLE_LIBWIRESHARK
 LIBWIRESHARK_CONFIG=^#define HAVE_LIBWIRESHARKDLL 1
 # Link plugins with the import library of libwireshark.dll
diff --git a/epan/prefs.c b/epan/prefs.c
index 8e0c3feaa4..d8a56109d0 100644
--- a/epan/prefs.c
+++ b/epan/prefs.c
@@ -151,6 +151,11 @@ static enum_val_t gui_layout_content[] = {
 		{NULL, NULL, -1}
 	};
 
+static enum_val_t gui_update_channel[] = {
+		{"DEVELOPMENT", "DEVELOPMENT", UPDATE_CHANNEL_DEVELOPMENT},
+		{"STABLE", "STABLE", UPDATE_CHANNEL_STABLE},
+		{NULL, NULL, -1}
+	};
 /*
  * List of all modules with preference settings.
  */
@@ -2067,6 +2072,16 @@ prefs_register_modules(void)
     prefs_register_string_preference(gui_module, "webbrowser", "The path to the webbrowser",
         "The path to the webbrowser (Ex: mozilla)", (const char**)(&prefs.gui_webbrowser));
 
+    prefs_register_bool_preference(gui_module, "update.enabled",
+                                   "Check for updates",
+                                   "Check for updates (Windows only)",
+                                   &prefs.gui_update_enabled);
+
+    prefs_register_enum_preference(gui_module, "update.channel",
+                       "Update channel",
+                       "The type of update to fetch",
+                       (gint*)(void*)(&prefs.gui_update_channel), gui_version_placement_type, FALSE);
+
     prefs_register_string_preference(gui_module, "window_title", "Custom window title",
         "Custom window title. (Appended to existing titles.)", (const char**)(&prefs.gui_window_title));
 
@@ -2641,6 +2656,9 @@ pre_init_prefs(void)
   prefs.gui_ask_unsaved            = TRUE;
   prefs.gui_find_wrap              = TRUE;
   prefs.gui_use_pref_save          = FALSE;
+  prefs.gui_update_enabled         = TRUE;
+  prefs.gui_update_channel         = UPDATE_CHANNEL_STABLE;
+  prefs.gui_update_interval        = 60*60*24; /* Seconds */
   /* This can be g_freed, so it must be g_mallocated. */
   prefs.gui_webbrowser             = g_strdup(HTML_VIEWER " %s");
   /* This can be g_freed, so it must be g_mallocated. */
diff --git a/epan/prefs.h b/epan/prefs.h
index a2d569fadc..8249bc42ce 100644
--- a/epan/prefs.h
+++ b/epan/prefs.h
@@ -119,6 +119,13 @@ typedef enum {
     pref_current
 } pref_source_t;
 
+/* 
+ * Update channel.
+ */
+typedef enum {
+    UPDATE_CHANNEL_DEVELOPMENT,
+    UPDATE_CHANNEL_STABLE
+} software_update_channel_e;
 
 typedef struct _e_prefs {
   gint          pr_format;
@@ -183,6 +190,9 @@ typedef struct _e_prefs {
   guint        tap_update_interval;
   gboolean     display_hidden_proto_items;
   gpointer     filter_expressions;	/* Actually points to &head */
+  gboolean     gui_update_enabled;
+  software_update_channel_e gui_update_channel;
+  gint         gui_update_interval;
 } e_prefs;
 
 WS_VAR_IMPORT e_prefs prefs;
diff --git a/packaging/nsis/Makefile.nmake b/packaging/nsis/Makefile.nmake
index 881f0bccaf..fa132703e1 100644
--- a/packaging/nsis/Makefile.nmake
+++ b/packaging/nsis/Makefile.nmake
@@ -208,6 +208,9 @@ NSIS_FLAGS=\
 !IFDEF GEOIP_DIR
 	/DGEOIP_DIR=$(GEOIP_DIR) \
 !ENDIF
+!IFDEF WINSPARKLE_DIR
+	/DWINSPARKLE_DIR=$(WINSPARKLE_DIR) \
+!ENDIF
 !IFDEF HHC_DIR
 	/DHHC_DIR="$(HHC_DIR)" \
 !ENDIF
diff --git a/packaging/nsis/wireshark.nsi b/packaging/nsis/wireshark.nsi
index e974bb9886..d432933e1b 100644
--- a/packaging/nsis/wireshark.nsi
+++ b/packaging/nsis/wireshark.nsi
@@ -342,6 +342,9 @@ File "${STAGING_DIR}\libsmi-2.dll"
 !ifdef GEOIP_DIR
 File "${STAGING_DIR}\libGeoIP-1.dll"
 !endif
+!ifdef WINSPARKLE_DIR
+File "${STAGING_DIR}\WinSparkle.dll"
+!endif
 File "${STAGING_DIR}\COPYING.txt"
 File "${STAGING_DIR}\NEWS.txt"
 File "${STAGING_DIR}\README.txt"
diff --git a/tools/win32-setup.sh b/tools/win32-setup.sh
index 58886a18e7..1cf97c66a6 100755
--- a/tools/win32-setup.sh
+++ b/tools/win32-setup.sh
@@ -4,7 +4,7 @@
 
 # 32-bit wrapper for win-setup.sh.
 
-export DOWNLOAD_TAG="2012-12-18"
+export DOWNLOAD_TAG="2013-02-19"
 export WIRESHARK_TARGET_PLATFORM="win32"
 
 WIN_SETUP=`echo $0 | sed -e s/win32/win/`
diff --git a/ui/Makefile.common b/ui/Makefile.common
index efd5a15b34..d7d4381d5f 100644
--- a/ui/Makefile.common
+++ b/ui/Makefile.common
@@ -54,6 +54,7 @@ WIRESHARK_UI_SRC = \
 	preference_utils.c	\
 	profile.c		\
 	recent.c		\
+	software_update.c	\
 	ssl_key_export.c	\
 	text_import.c		\
 	time_shift.c		\
@@ -74,6 +75,7 @@ noinst_HEADERS = \
 	recent.h		\
 	recent_utils.h		\
 	simple_dialog.h		\
+	software_update.h	\
 	ssl_key_export.h	\
 	text_import.h		\
 	text_import_scanner.h	\
diff --git a/ui/Makefile.nmake b/ui/Makefile.nmake
index a7d339ad25..98736423e8 100644
--- a/ui/Makefile.nmake
+++ b/ui/Makefile.nmake
@@ -16,7 +16,7 @@ GENERATED_CFLAGS=\
 	/I$(PCAP_DIR)\WPCAP\LIBPCAP /I$(PCAP_DIR)\WPCAP\LIBPCAP\bpf \
 	/I$(PCAP_DIR)\WPCAP\LIBPCAP\lbl \
 	/I$(PCAP_DIR)\include $(AIRPCAP_CFLAGS) \
-	$(PORTAUDIO_CFLAGS) $(GEOIP_CFLAGS) \
+	$(PORTAUDIO_CFLAGS) $(GEOIP_CFLAGS) $(WINSPARKLE_CFLAGS) \
 	$(HHC_CFLAGS)
 
 CFLAGS=$(WARNINGS_ARE_ERRORS) $(GENERATED_CFLAGS)
diff --git a/ui/gtk/main.c b/ui/gtk/main.c
index 4773863cee..acc69e4ff1 100644
--- a/ui/gtk/main.c
+++ b/ui/gtk/main.c
@@ -109,6 +109,7 @@
 #include "ui/preference_utils.h"
 #include "ui/recent.h"
 #include "ui/recent_utils.h"
+#include "ui/software_update.h"
 #include "ui/simple_dialog.h"
 #include "ui/ui_util.h"
 
@@ -3215,6 +3216,8 @@ main(int argc, char *argv[])
   gtk_iface_mon_start();
 #endif
 
+  software_update_init();
+  
   /* we'll enter the GTK loop now and hand the control over to GTK ... */
   gtk_main();
   /* ... back from GTK, we're going down now! */
@@ -3238,6 +3241,8 @@ main(int argc, char *argv[])
   g_object_unref(theApp);
 #endif
 
+  software_update_cleanup();
+
   /* Shutdown windows sockets */
   WSACleanup();
 
diff --git a/ui/gtk/main_menubar.c b/ui/gtk/main_menubar.c
index 5c2eb91e4a..7fecaa684b 100644
--- a/ui/gtk/main_menubar.c
+++ b/ui/gtk/main_menubar.c
@@ -57,6 +57,7 @@
 #include "ui/preference_utils.h"
 #include "ui/recent.h"
 #include "ui/simple_dialog.h"
+#include "ui/software_update.h"
 #include "ui/ui_util.h"
 #include "ui/utf8_entities.h"
 
@@ -926,6 +927,14 @@ help_menu_SampleCaptures_cb(GtkAction *action _U_, gpointer user_data _U_)
     topic_menu_cb( NULL/* widget_U_ */, NULL /*GdkEventButton *event _U_*/, GINT_TO_POINTER(ONLINEPAGE_SAMPLE_FILES));
 }
 
+#ifdef HAVE_SOFTWARE_UPDATE
+static void
+check_for_updates_cb(GtkAction *action _U_, gpointer user_data _U_)
+{
+    software_update_check();
+}
+#endif /* HAVE_SOFTWARE_UPDATE */
+
 static const char *ui_desc_menubar =
 "<ui>\n"
 "  <menubar name ='Menubar'>\n"
@@ -1307,6 +1316,10 @@ static const char *ui_desc_menubar =
 "      <separator/>\n"
 "      <menuitem name='Wiki' action='/Help/Wiki'/>\n"
 "      <menuitem name='SampleCaptures' action='/Help/SampleCaptures'/>\n"
+#ifdef HAVE_SOFTWARE_UPDATE
+"      <separator/>\n"
+"      <menuitem name='CheckForUpdates' action='/Help/CheckForUpdates'/>\n"
+#endif /* HAVE_SOFTWARE_UPDATE */
 "      <separator/>\n"
 "      <menuitem name='AboutWireshark' action='/Help/AboutWireshark'/>\n"
 "    </menu>\n"
@@ -1754,10 +1767,13 @@ static const GtkActionEntry main_menu_bar_entries[] = {
 
    { "/Help/Website",               GTK_STOCK_HOME,                 "Website",              NULL,                           NULL,               G_CALLBACK(help_menu_Website_cb) },
    { "/Help/FAQs",                  NULL,                           "FAQ's",                NULL,                           NULL,               G_CALLBACK(help_menu_faq_cb) },
-   { "/Help/ASK",             NULL,                           "Ask (Q&A)",            NULL,                           NULL,               G_CALLBACK(help_menu_ask_cb) },
+   { "/Help/ASK",                   NULL,                           "Ask (Q&A)",            NULL,                           NULL,               G_CALLBACK(help_menu_ask_cb) },
    { "/Help/Downloads",             NULL,                           "Downloads",            NULL,                           NULL,               G_CALLBACK(help_menu_Downloads_cb) },
    { "/Help/Wiki",                  WIRESHARK_STOCK_WIKI,           "Wiki",                 NULL,                           NULL,               G_CALLBACK(help_menu_Wiki_cb) },
    { "/Help/SampleCaptures",        NULL,                           "Sample Captures",      NULL,                           NULL,               G_CALLBACK(help_menu_SampleCaptures_cb) },
+#ifdef HAVE_SOFTWARE_UPDATE
+   { "/Help/CheckForUpdates",       NULL,                           "Check for Updates...", NULL,                           NULL,               G_CALLBACK(check_for_updates_cb) },
+#endif /* HAVE_SOFTWARE_UPDATE */
    { "/Help/AboutWireshark",        WIRESHARK_STOCK_ABOUT,          "_About Wireshark",     NULL,                           NULL,               G_CALLBACK(about_wireshark_cb) },
 };
 
diff --git a/ui/software_update.c b/ui/software_update.c
new file mode 100755
index 0000000000..7e6c366050
--- /dev/null
+++ b/ui/software_update.c
@@ -0,0 +1,157 @@
+/* software_update.h
+ * Wrappers and routines to check for software updates.
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 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 "config.h"
+
+#include "software_update.h"
+#include "../epan/prefs.h"
+
+/*
+ * Version 0 of the update URI path has the following elements:
+ * - The update path prefix (fixed, "update")
+ * - The schema version (fixed, 0)
+ * - The application name (fixed, "Wireshark")
+ * - The application version ("<major>.<minor>.<micro>")
+ * - The operating system (varable, one of "windows" or "osx")
+ * - The architecture name (variable, one of "x86", "x86-64")
+ * - The locale (fixed, "en-US)
+ * - The update channel (variable, one of "development" or "stable") + .xml
+ * 
+ * Based on https://wiki.mozilla.org/Software_Update:Checking_For_Updates
+ */
+
+#ifdef HAVE_SOFTWARE_UPDATE
+#define SU_SCHEMA_PREFIX "update"
+#define SU_SCHEMA_VERSION 0
+#define SU_APPLICATION "Wireshark"
+#define SU_LOCALE "en-US"
+#endif /* HAVE_SOFTWARE_UPDATE */
+
+#if defined(HAVE_SOFTWARE_UPDATE) && defined (_WIN32)
+
+#include "glib.h"
+
+#include <winsparkle.h>
+
+#define SU_OSNAME "Windows"
+
+static GString *update_url_str = NULL;
+
+static const char *get_appcast_update_url(software_update_channel_e chan) {
+    const char *chan_name;
+    const char *arch = "x86";
+    
+    if (!update_url_str) {
+        update_url_str = g_string_new("");
+    }
+    
+#if 0
+    /* XXX Add WOW64 checks similar to version_info.c? */
+    if (sizeof(arch) != 4) {
+        arch = "x86-64";
+    }
+#endif
+    
+    switch (chan) {
+        case UPDATE_CHANNEL_DEVELOPMENT:
+            chan_name = "development";
+            break;
+        default:
+            chan_name = "stable";
+            break;
+    }
+    g_string_printf(update_url_str, "https://www.wireshark.org/%s/%u/%s/%s/%s/%s/en-US/%s.xml",
+                    SU_SCHEMA_PREFIX,
+                    SU_SCHEMA_VERSION,
+                    SU_APPLICATION,
+                    VERSION,
+                    SU_OSNAME,
+                    arch,
+                    chan_name);
+    return update_url_str->str;
+}
+
+/** Initialize software updates.
+ */
+void
+software_update_init(void) {
+    const char *update_url = get_appcast_update_url(UPDATE_CHANNEL_DEVELOPMENT);
+    
+    win_sparkle_set_appcast_url(update_url);
+    win_sparkle_set_automatic_check_for_updates(prefs.gui_update_enabled ? 1 : 0);
+    win_sparkle_set_update_check_interval(prefs.gui_update_interval);
+    win_sparkle_init();
+}
+
+/** Force a software update check.
+ */
+void
+software_update_check(void) {
+    win_sparkle_check_update_with_ui();
+}
+
+/** Clean up software update checking.
+ *
+ * Does nothing on platforms that don't support software updates. 
+ */
+extern void software_update_cleanup(void) {
+    win_sparkle_cleanup();
+}
+
+#else /* defined(HAVE_SOFTWARE_UPDATE) && defined (_WIN32) */
+
+/** Initialize software updates.
+ */
+void
+software_update_init(void) {
+}
+
+/** Force a software update check.
+ */
+void
+software_update_check(void) {
+}
+
+/** Clean up software update checking.
+ *
+ * Does nothing on platforms that don't support software updates. 
+ */
+extern void software_update_cleanup(void) {
+}
+
+#endif /* defined(HAVE_SOFTWARE_UPDATE) && defined (_WIN32) */
+
+/*
+ * Editor modelines
+ *
+ * Local Variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */
+
diff --git a/ui/software_update.h b/ui/software_update.h
new file mode 100755
index 0000000000..b78ee00663
--- /dev/null
+++ b/ui/software_update.h
@@ -0,0 +1,68 @@
+/* software_update.h
+ * Wrappers and routines to check for software updates.
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 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.
+ */
+
+#ifndef __SOFTWARE_UPDATE_H__
+#define __SOFTWARE_UPDATE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** Initialize software updates.
+ *
+ * Does nothing on platforms that don't support software updates. 
+ */
+extern void software_update_init(void);
+
+/** Force a software update check.
+ *
+ * Does nothing on platforms that don't support software updates. 
+ */
+extern void software_update_check(void);
+
+/** Clean up software update checking.
+ *
+ * Does nothing on platforms that don't support software updates. 
+ */
+extern void software_update_cleanup(void);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __SOFTWARE_UPDATE_H__ */
+
+/*
+ * Editor modelines
+ *
+ * Local Variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */