svn merge -r130238:130240 svn+ssh://svn.lindenlab.com/svn/linden/branches/linux-updater-6

QAR-1771  Linux Viewer Autoupdater + XUI-parse refactoring

2 files changed, 876 insertions, 0 deletions

diff --git a/indra/linux_updater/CMakeLists.txt b/indra/linux_updater/CMakeLists.txt
new file mode 100644
index 0000000000..9fe32ecb46
--- /dev/null
+++ b/indra/linux_updater/CMakeLists.txt
@@ -0,0 +1,58 @@
+# -*- cmake -*-
+
+project(linux_updater)
+
+include(00-Common)
+include(CURL)
+include(CARes)
+include(OpenSSL)
+include(UI)
+include(LLCommon)
+include(LLVFS)
+include(LLXML)
+include(LLXUIXML)
+include(Linking)
+
+include_directories(
+    ${LLCOMMON_INCLUDE_DIRS}
+    ${LLVFS_INCLUDE_DIRS}
+    ${LLXML_INCLUDE_DIRS}
+    ${LLXUIXML_INCLUDE_DIRS}
+    ${CURL_INCLUDE_DIRS}
+    ${CARES_INCLUDE_DIRS}
+    ${OPENSSL_INCLUDE_DIRS}
+    ${UI_INCLUDE_DIRS}
+    )
+
+set(linux_updater_SOURCE_FILES linux_updater.cpp)
+
+set(linux_updater_HEADER_FILES CMakeLists.txt)
+
+set_source_files_properties(${linux_updater_HEADER_FILES}
+                            PROPERTIES HEADER_FILES_ONLY TRUE)
+
+list(APPEND linux_updater_SOURCE_FILES ${linux_updater_HEADER_FILES})
+
+add_executable(linux-updater ${linux_updater_SOURCE_FILES})
+
+target_link_libraries(linux-updater
+    ${CURL_LIBRARIES}
+    ${CARES_LIBRARIES}
+    ${OPENSSL_LIBRARIES}
+    ${CRYPTO_LIBRARIES}
+    ${UI_LIBRARIES}
+    ${LLXML_LIBRARIES}
+    ${LLXUIXML_LIBRARIES}
+    ${LLVFS_LIBRARIES}
+    ${LLCOMMON_LIBRARIES}
+    )
+
+add_custom_command(
+    OUTPUT linux-updater-stripped
+    COMMAND strip
+    ARGS --strip-debug -o linux-updater-stripped linux-updater
+    DEPENDS linux-updater
+    )
+
+add_custom_target(linux-updater-strip-target ALL
+                  DEPENDS linux-updater-stripped)
diff --git a/indra/linux_updater/linux_updater.cpp b/indra/linux_updater/linux_updater.cpp
new file mode 100644
index 0000000000..acc60d42bf
--- /dev/null
+++ b/indra/linux_updater/linux_updater.cpp
@@ -0,0 +1,818 @@
+/** 
+ * @file linux_updater.cpp
+ * @author Kyle Ambroff <ambroff@lindenlab.com>, Tofu Linden
+ * @brief Viewer update program for unix platforms that support GTK+
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * Copyright (c) 2008, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+
+#include "linden_common.h"
+#include "llerrorcontrol.h"
+#include "llfile.h"
+#include "lldir.h"
+#include "llxmlnode.h"
+#include "lltrans.h"
+
+#include <curl/curl.h>
+
+extern "C" {
+#include <gtk/gtk.h>
+}
+
+const guint UPDATE_PROGRESS_TIMEOUT = 100;
+const guint UPDATE_PROGRESS_TEXT_TIMEOUT = 1000;
+const guint ROTATE_IMAGE_TIMEOUT = 8000;
+
+typedef struct _updater_app_state {
+	std::string app_name;
+	std::string url;
+	std::string image_dir;
+	std::string dest_dir;
+	std::string strings_dirs;
+	std::string strings_file;
+
+	GtkWidget *window;
+	GtkWidget *progress_bar;
+	GtkWidget *image;
+
+	double progress_value;
+	bool activity_mode;
+
+	guint image_rotation_timeout_id;
+	guint progress_update_timeout_id;
+	guint update_progress_text_timeout_id;
+
+	bool failure;
+} UpdaterAppState;
+
+// List of entries from strings.xml to always replace
+static std::set<std::string> default_trans_args;
+void init_default_trans_args()
+{
+        default_trans_args.insert("SECOND_LIFE"); // World
+        default_trans_args.insert("SECOND_LIFE_VIEWER");
+        default_trans_args.insert("SECOND_LIFE_GRID");
+        default_trans_args.insert("SECOND_LIFE_SUPPORT");
+}
+
+bool translate_init(std::string comma_delim_path_list,
+		    std::string base_xml_name)
+{
+	init_default_trans_args();
+
+	// extract paths string vector from comma-delimited flat string
+	std::vector<std::string> paths;
+	LLStringUtil::getTokens(comma_delim_path_list, paths); // split over ','
+
+	// suck the translation xml files into memory
+	LLXMLNodePtr root;
+	bool success = LLXMLNode::getLayeredXMLNode(base_xml_name, root, paths);
+	if (!success)
+	{
+		// couldn't load string table XML
+		return false;
+	}
+	else
+	{
+		// get those strings out of the XML
+		LLTrans::parseStrings(root, default_trans_args);
+		return true;
+	}
+}
+
+
+void updater_app_ui_init(void);
+void updater_app_quit(UpdaterAppState *app_state);
+void parse_args_and_init(int argc, char **argv, UpdaterAppState *app_state);
+std::string next_image_filename(std::string& image_path);
+void display_error(GtkWidget *parent, std::string title, std::string message);
+BOOL install_package(std::string package_file, std::string destination);
+BOOL spawn_viewer(UpdaterAppState *app_state);
+
+extern "C" {
+	void on_window_closed(GtkWidget *sender, gpointer state);
+	gpointer worker_thread_cb(gpointer *data);
+	int download_progress_cb(gpointer data, double t, double d, double utotal, double ulnow);
+	gboolean rotate_image_cb(gpointer data);
+	gboolean progress_update_timeout(gpointer data);
+	gboolean update_progress_text_timeout(gpointer data);
+}
+
+void updater_app_ui_init(UpdaterAppState *app_state)
+{
+	GtkWidget *vbox;
+	GtkWidget *summary_label;
+	GtkWidget *description_label;
+	GtkWidget *frame;
+
+	llassert(app_state != NULL);
+
+	// set up window and main container
+	std::string window_title = LLTrans::getString("UpdaterWindowTitle");
+	app_state->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	gtk_window_set_title(GTK_WINDOW(app_state->window),
+			     window_title.c_str());
+	gtk_window_set_resizable(GTK_WINDOW(app_state->window), FALSE);
+	gtk_window_set_position(GTK_WINDOW(app_state->window),
+				GTK_WIN_POS_CENTER_ALWAYS);
+
+	gtk_container_set_border_width(GTK_CONTAINER(app_state->window), 12);
+	g_signal_connect(G_OBJECT(app_state->window), "delete-event", 
+			 G_CALLBACK(on_window_closed), app_state);
+
+	vbox = gtk_vbox_new(FALSE, 6);
+	gtk_container_add(GTK_CONTAINER(app_state->window), vbox);
+
+	// set top label
+	std::ostringstream label_ostr;
+	label_ostr << "<big><b>"
+		   << LLTrans::getString("UpdaterNowUpdating")
+		   << "</b></big>";
+
+	summary_label = gtk_label_new(NULL);
+	gtk_label_set_use_markup(GTK_LABEL(summary_label), TRUE);
+	gtk_label_set_markup(GTK_LABEL(summary_label), 
+			     label_ostr.str().c_str());
+	gtk_misc_set_alignment(GTK_MISC(summary_label), 0, 0.5);
+	gtk_box_pack_start(GTK_BOX(vbox), summary_label, FALSE, FALSE, 0);
+
+	// create the description label
+	description_label = gtk_label_new(LLTrans::getString("UpdaterUpdatingDescriptive").c_str());
+	gtk_label_set_line_wrap(GTK_LABEL(description_label), TRUE);
+	gtk_misc_set_alignment(GTK_MISC(description_label), 0, 0.5);
+	gtk_box_pack_start(GTK_BOX(vbox), description_label, FALSE, FALSE, 0);
+
+	// If an image path has been set, load the background images
+	if (!app_state->image_dir.empty()) {
+		frame = gtk_frame_new(NULL);
+		gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
+		gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, TRUE, 0);
+
+		// load the first image
+		app_state->image = gtk_image_new_from_file
+			(next_image_filename(app_state->image_dir).c_str());
+		gtk_widget_set_size_request(app_state->image, 340, 310);
+		gtk_container_add(GTK_CONTAINER(frame), app_state->image);
+
+		// rotate the images every 5 seconds
+		app_state->image_rotation_timeout_id = g_timeout_add
+			(ROTATE_IMAGE_TIMEOUT, rotate_image_cb, app_state);
+	}
+
+	// set up progress bar, and update it roughly every 1/10 of a second
+	app_state->progress_bar = gtk_progress_bar_new();
+	gtk_progress_bar_set_text(GTK_PROGRESS_BAR(app_state->progress_bar), 
+				  LLTrans::getString("UpdaterProgressBarTextWithEllipses").c_str());
+	gtk_box_pack_start(GTK_BOX(vbox), 
+			   app_state->progress_bar, FALSE, TRUE, 0);
+	app_state->progress_update_timeout_id = g_timeout_add
+		(UPDATE_PROGRESS_TIMEOUT, progress_update_timeout, app_state);
+	app_state->update_progress_text_timeout_id = g_timeout_add
+		(UPDATE_PROGRESS_TEXT_TIMEOUT, update_progress_text_timeout, app_state);
+
+	gtk_widget_show_all(app_state->window);
+}
+
+gboolean rotate_image_cb(gpointer data)
+{
+	UpdaterAppState *app_state;
+	std::string filename;
+
+	llassert(data != NULL);
+	app_state = (UpdaterAppState *) data;
+
+	filename = next_image_filename(app_state->image_dir);
+
+	gdk_threads_enter();
+	gtk_image_set_from_file(GTK_IMAGE(app_state->image), filename.c_str());
+	gdk_threads_leave();
+
+	return TRUE;
+}
+
+std::string next_image_filename(std::string& image_path)
+{
+	std::string image_filename;
+	gDirUtilp->getNextFileInDir(image_path, "/*.jpg", image_filename, true);
+	return image_path + "/" + image_filename;
+}
+
+void on_window_closed(GtkWidget *sender, gpointer data)
+{
+	UpdaterAppState *app_state;
+
+	llassert(data != NULL);
+	app_state = (UpdaterAppState *) data;
+
+	updater_app_quit(app_state);
+}
+
+void updater_app_quit(UpdaterAppState *app_state)
+{
+	if (app_state != NULL)
+	{
+		g_source_remove(app_state->progress_update_timeout_id);
+
+		if (!app_state->image_dir.empty())
+		{
+			g_source_remove(app_state->image_rotation_timeout_id);
+		}
+	}
+
+	gtk_main_quit();
+}
+
+void display_error(GtkWidget *parent, std::string title, std::string message)
+{
+	GtkWidget *dialog;
+
+	dialog = gtk_message_dialog_new(GTK_WINDOW(parent),
+					GTK_DIALOG_DESTROY_WITH_PARENT,
+					GTK_MESSAGE_ERROR,
+					GTK_BUTTONS_OK,
+					message.c_str());
+	gtk_window_set_title(GTK_WINDOW(dialog), title.c_str());
+	gtk_dialog_run(GTK_DIALOG(dialog));
+	gtk_widget_destroy(dialog);
+}
+
+gpointer worker_thread_cb(gpointer data)
+{
+	UpdaterAppState *app_state;
+	CURL *curl;
+	CURLcode result;
+	FILE *package_file;
+	GError *error = NULL;
+	char *tmp_filename = NULL;
+	int fd;
+
+	//g_return_val_if_fail (data != NULL, NULL);
+	app_state = (UpdaterAppState *) data;
+
+	try {
+		// create temporary file to store the package.
+		fd = g_file_open_tmp
+			("secondlife-update-XXXXXX", &tmp_filename, &error);
+		if (error != NULL)
+		{
+			llerrs << "Unable to create temporary file: "
+			       << error->message
+			       << llendl;
+
+			g_error_free(error);
+			throw 0;
+		}
+
+		package_file = fdopen(fd, "wb");
+		if (package_file == NULL)
+		{
+			llerrs << "Failed to create temporary file: "
+			       << tmp_filename
+			       << llendl;
+
+			gdk_threads_enter();
+			display_error(app_state->window,
+				      LLTrans::getString("UpdaterFailDownloadTitle"),
+				      LLTrans::getString("UpdaterFailUpdateDescriptive"));
+			gdk_threads_leave();
+			throw 0;
+		}
+
+		// initialize curl and start downloading the package
+		llinfos << "Downloading package: " << app_state->url << llendl;
+
+		curl = curl_easy_init();
+		if (curl == NULL)
+		{
+			llerrs << "Failed to initialize libcurl" << llendl;
+
+			gdk_threads_enter();
+			display_error(app_state->window,
+				      LLTrans::getString("UpdaterFailDownloadTitle"),
+				      LLTrans::getString("UpdaterFailUpdateDescriptive"));
+			gdk_threads_leave();
+			throw 0;
+		}
+
+		curl_easy_setopt(curl, CURLOPT_URL, app_state->url.c_str());
+		curl_easy_setopt(curl, CURLOPT_NOSIGNAL, TRUE);
+		curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, TRUE);
+		curl_easy_setopt(curl, CURLOPT_WRITEDATA, package_file);
+		curl_easy_setopt(curl, CURLOPT_NOPROGRESS, FALSE);
+		curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, 
+				 &download_progress_cb);
+		curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, app_state);
+
+		result = curl_easy_perform(curl);
+		fclose(package_file);
+		curl_easy_cleanup(curl);
+
+		if (result)
+		{
+			llerrs << "Failed to download update: " 
+			       << app_state->url 
+			       << llendl;
+
+			gdk_threads_enter();
+			display_error(app_state->window,
+				      LLTrans::getString("UpdaterFailDownloadTitle"),
+				      LLTrans::getString("UpdaterFailUpdateDescriptive"));
+			gdk_threads_leave();
+
+			throw 0;
+		}
+
+		// now pulse the progres bar back and forth while the package is
+		// being unpacked
+		gdk_threads_enter();
+		std::string installing_msg = LLTrans::getString("UpdaterNowInstalling");
+		gtk_progress_bar_set_text(
+			GTK_PROGRESS_BAR(app_state->progress_bar),
+			installing_msg.c_str());
+		app_state->activity_mode = TRUE;
+		gdk_threads_leave();
+
+		// *TODO: if the destination is not writable, terminate this
+		// thread and show file chooser?
+		if (!install_package(tmp_filename, app_state->dest_dir))
+		{
+			llwarns << "Failed to install package to destination: "
+				<< app_state->dest_dir
+				<< llendl;
+
+			gdk_threads_enter();
+			display_error(app_state->window,
+				      LLTrans::getString("UpdaterFailInstallTitle"),
+				      LLTrans::getString("UpdaterFailUpdateDescriptive"));
+			//"Failed to update " + app_state->app_name,
+			gdk_threads_leave();
+			throw 0;
+		}
+
+		// try to spawn the new viewer
+		if (!spawn_viewer(app_state))
+		{
+			llwarns << "Viewer was not installed properly in : "
+				<< app_state->dest_dir
+				<< llendl;
+
+			gdk_threads_enter();
+			display_error(app_state->window,
+				      LLTrans::getString("UpdaterFailStartTitle"),
+				      LLTrans::getString("UpdaterFailUpdateDescriptive"));
+			gdk_threads_leave();
+			throw 0;
+		}
+	}
+	catch (...)
+	{
+		app_state->failure = TRUE;
+	}
+
+	// FIXME: delete package file also if delete-event is raised on window
+	if (tmp_filename != NULL)
+	{
+		if (gDirUtilp->fileExists(tmp_filename))
+		{
+			LLFile::remove(tmp_filename);
+		}
+	}
+
+	gdk_threads_enter();
+	updater_app_quit(app_state);
+	gdk_threads_leave();
+
+	return NULL;
+}
+
+
+gboolean less_anal_gspawnsync(gchar **argv,
+			      gchar **stderr_output,
+			      gint *child_exit_status,
+			      GError **spawn_error)
+{
+	// store current SIGCHLD handler if there is one, replace with default
+	// handler to make glib happy
+	struct sigaction sigchld_backup;
+	struct sigaction sigchld_appease_glib;
+	sigchld_appease_glib.sa_handler = SIG_DFL;
+	sigemptyset(&sigchld_appease_glib.sa_mask);
+	sigchld_appease_glib.sa_flags = 0;
+	sigaction(SIGCHLD, &sigchld_appease_glib, &sigchld_backup);
+
+	gboolean rtn = g_spawn_sync(NULL,
+				    argv,
+				    NULL,
+				    (GSpawnFlags) (G_SPAWN_STDOUT_TO_DEV_NULL),
+				    NULL,
+				    NULL,
+				    NULL,
+				    stderr_output,
+				    child_exit_status,
+				    spawn_error);
+
+	// restore SIGCHLD handler
+	sigaction(SIGCHLD, &sigchld_backup, NULL);
+	
+	return rtn;
+}
+
+
+// perform a rename, or perform a (prompted) root rename if that fails
+int
+rename_with_sudo_fallback(const std::string& filename, const std::string& newname)
+{
+	int rtncode = ::rename(filename.c_str(), newname.c_str());
+	lldebugs << "rename result is: " << rtncode << " / " << errno << llendl;
+	if (rtncode && (EACCES == errno || EPERM == errno || EXDEV == errno))
+	{
+		llinfos << "Permission problem in rename, or moving between different mount points.  Retrying as a mv under a sudo." << llendl;
+		// failed due to permissions, try again as a gksudo or kdesu mv wrapper hack
+		char *sudo_cmd = NULL;
+		sudo_cmd = g_find_program_in_path("gksudo");
+		if (!sudo_cmd)
+		{
+			sudo_cmd = g_find_program_in_path("kdesu");
+		}
+		if (sudo_cmd)
+		{
+			char *mv_cmd = NULL;
+			mv_cmd = g_find_program_in_path("mv");
+			if (mv_cmd)
+			{
+				char *src_string_copy = g_strdup(filename.c_str());
+				char *dst_string_copy = g_strdup(newname.c_str());
+				char* argv[] = 
+					{
+						sudo_cmd,
+						mv_cmd,
+						src_string_copy,
+						dst_string_copy,
+						NULL
+					};
+
+				gchar *stderr_output = NULL;
+				gint child_exit_status = 0;
+				GError *spawn_error = NULL;
+				if (!less_anal_gspawnsync(argv, &stderr_output,
+							  &child_exit_status, &spawn_error))
+				{
+					llwarns << "Failed to spawn child process: " 
+						<< spawn_error->message 
+						<< llendl;
+				}
+				else if (child_exit_status)
+				{
+					llwarns << "mv command failed: "
+						<< (stderr_output ? stderr_output : "(no reason given)")
+						<< llendl;
+				}
+				else
+				{
+					// everything looks good, clear the error code
+					rtncode = 0;
+				}				
+
+				g_free(src_string_copy);
+				g_free(dst_string_copy);
+				if (spawn_error) g_error_free(spawn_error);
+			}
+		}
+	}
+	return rtncode;
+}
+
+gboolean install_package(std::string package_file, std::string destination)
+{
+	char *tar_cmd = NULL;
+	std::ostringstream command;
+
+	// Find the absolute path to the 'tar' command.
+	tar_cmd = g_find_program_in_path("tar");
+	if (!tar_cmd)
+	{
+		llerrs << "`tar' was not found in $PATH" << llendl;
+		return FALSE;
+	}
+	llinfos << "Found tar command: " << tar_cmd << llendl;
+
+	// Unpack the tarball in a temporary place first, then move it to 
+	// its final destination
+	std::string tmp_dest_dir = gDirUtilp->getTempFilename();
+	if (LLFile::mkdir(tmp_dest_dir, 0744))
+	{
+		llerrs << "Failed to create directory: "
+		       << destination
+		       << llendl;
+
+		return FALSE;
+	}
+
+	char *package_file_string_copy = g_strdup(package_file.c_str());
+	char *tmp_dest_dir_string_copy = g_strdup(tmp_dest_dir.c_str());
+	char *argv[8] = {
+		tar_cmd,
+		"--strip", "1",
+		"-xjf",
+		package_file_string_copy,
+		"-C", tmp_dest_dir_string_copy,
+		NULL,
+	};
+
+	llinfos << "Untarring package: " << package_file << llendl;
+
+	// store current SIGCHLD handler if there is one, replace with default
+	// handler to make glib happy
+	struct sigaction sigchld_backup;
+	struct sigaction sigchld_appease_glib;
+	sigchld_appease_glib.sa_handler = SIG_DFL;
+	sigemptyset(&sigchld_appease_glib.sa_mask);
+	sigchld_appease_glib.sa_flags = 0;
+	sigaction(SIGCHLD, &sigchld_appease_glib, &sigchld_backup);
+
+	gchar *stderr_output = NULL;
+	gint child_exit_status = 0;
+	GError *untar_error = NULL;
+	if (!less_anal_gspawnsync(argv, &stderr_output,
+				  &child_exit_status, &untar_error))
+	{
+		llwarns << "Failed to spawn child process: " 
+			<< untar_error->message 
+			<< llendl;
+		return FALSE;
+	}
+
+	if (child_exit_status)
+	{
+	 	llwarns << "Untar command failed: "
+			<< (stderr_output ? stderr_output : "(no reason given)")
+			<< llendl;
+		return FALSE;
+	}
+
+	g_free(tar_cmd);
+	g_free(package_file_string_copy);
+	g_free(tmp_dest_dir_string_copy);
+	g_free(stderr_output);
+	if (untar_error) g_error_free(untar_error);
+
+	// move the existing package out of the way if it exists
+	if (gDirUtilp->fileExists(destination))
+	{
+		std::string backup_dir = destination + ".backup";
+		int oldcounter = 1;
+		while (gDirUtilp->fileExists(backup_dir))
+		{
+			// find a foo.backup.N folder name that isn't taken yet
+			backup_dir = destination + ".backup." + llformat("%d", oldcounter);
+			++oldcounter;
+		}
+
+		if (rename_with_sudo_fallback(destination, backup_dir))
+		{
+			llwarns << "Failed to move directory: '" 
+				<< destination << "' -> '" << backup_dir 
+				<< llendl;
+			return FALSE;
+		}
+	}
+
+	// The package has been unpacked in a staging directory, now we just
+	// need to move it to its destination.
+	if (rename_with_sudo_fallback(tmp_dest_dir, destination))
+	{
+		llwarns << "Failed to move installation to the destination: "
+			<< destination 
+			<< llendl;
+		return FALSE;
+	}
+
+	// \0/ Success!
+	return TRUE;
+}
+
+gboolean progress_update_timeout(gpointer data)
+{
+	UpdaterAppState *app_state;
+
+	llassert(data != NULL);
+
+	app_state = (UpdaterAppState *) data;
+
+	gdk_threads_enter();
+	if (app_state->activity_mode)
+	{
+		gtk_progress_bar_pulse
+			(GTK_PROGRESS_BAR(app_state->progress_bar));
+	}
+	else
+	{
+		gtk_progress_set_value(GTK_PROGRESS(app_state->progress_bar),
+				       app_state->progress_value);
+	}
+	gdk_threads_leave();
+
+	return TRUE;
+}
+
+gboolean update_progress_text_timeout(gpointer data)
+{
+	UpdaterAppState *app_state;
+
+	llassert(data != NULL);
+	app_state = (UpdaterAppState *) data;
+
+	if (app_state->activity_mode == TRUE)
+	{
+		// We no longer need this timeout, it will be removed.
+		return FALSE;
+	}
+
+	if (!app_state->progress_value)
+	{
+		return TRUE;
+	}
+
+	std::string progress_text = llformat((LLTrans::getString("UpdaterProgressBarText")+" (%.0f%%)").c_str(), app_state->progress_value);
+
+	gdk_threads_enter();
+	gtk_progress_bar_set_text(GTK_PROGRESS_BAR(app_state->progress_bar),
+				  progress_text.c_str());
+	gdk_threads_leave();
+
+	return TRUE;
+}
+
+int download_progress_cb(gpointer data,
+			 double t,
+			 double d,
+			 double utotal,
+			 double ulnow)
+{
+	UpdaterAppState *app_state;
+
+	llassert(data != NULL);
+	app_state = (UpdaterAppState *) data;
+
+	if (t <= 0.0)
+	{
+		app_state->progress_value = 0;
+	}
+	else
+	{
+		app_state->progress_value = d * 100.0 / t;
+	}
+	return 0;
+}
+
+BOOL spawn_viewer(UpdaterAppState *app_state)
+{
+	llassert(app_state != NULL);
+
+	std::string cmd = app_state->dest_dir + "/secondlife";
+	GError *error = NULL;
+
+	// We want to spawn the Viewer on the same display as the updater app
+	gboolean success = gdk_spawn_command_line_on_screen
+		(gtk_widget_get_screen(app_state->window), cmd.c_str(), &error);
+
+	if (!success)
+	{
+		llwarns << "Failed to launch viewer: " << error->message 
+			<< llendl;
+	}
+
+	if (error) g_error_free(error);
+
+	return success;
+}
+
+void show_usage_and_exit()
+{
+	std::cout << "Usage: linux-updater --url URL --name NAME --dest PATH --stringsdir PATH1,PATH2 --stringsfile FILE"
+		  << "[--image-dir PATH]"
+		  << std::endl;
+	exit(1);
+}
+
+void parse_args_and_init(int argc, char **argv, UpdaterAppState *app_state)
+{
+	int i;
+
+	for (i = 1; i < argc; i++)
+	{
+		if ((!strcmp(argv[i], "--url")) && (++i < argc))
+		{
+			app_state->url = argv[i];
+		}
+		else if ((!strcmp(argv[i], "--name")) && (++i < argc))
+		{
+			app_state->app_name = argv[i];
+		}
+		else if ((!strcmp(argv[i], "--image-dir")) && (++i < argc))
+		{
+			app_state->image_dir = argv[i];
+		}
+		else if ((!strcmp(argv[i], "--dest")) && (++i < argc))
+		{
+			app_state->dest_dir = argv[i];
+		}
+		else if ((!strcmp(argv[i], "--stringsdir")) && (++i < argc))
+		{
+			app_state->strings_dirs = argv[i];
+		}
+		else if ((!strcmp(argv[i], "--stringsfile")) && (++i < argc))
+		{
+			app_state->strings_file = argv[i];
+		}
+		else
+		{
+			// show usage, an invalid option was given.
+			show_usage_and_exit();
+		}
+	}
+
+	if (app_state->app_name.empty() 
+	    || app_state->url.empty() 
+	    || app_state->dest_dir.empty())
+	{
+		show_usage_and_exit();
+	}
+
+	app_state->progress_value = 0.0;
+	app_state->activity_mode = FALSE;
+	app_state->failure = FALSE;
+
+	translate_init(app_state->strings_dirs, app_state->strings_file);
+}
+
+int main(int argc, char **argv)
+{
+	UpdaterAppState app_state;
+	GThread *worker_thread;
+
+	parse_args_and_init(argc, argv, &app_state);
+
+	// Initialize logger, and rename old log file
+	gDirUtilp->initAppDirs("SecondLife");
+	LLError::initForApplication
+		(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, ""));
+	std::string old_log_file = gDirUtilp->getExpandedFilename
+		(LL_PATH_LOGS, "updater.log.old");
+	std::string log_file = 
+		gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "updater.log");
+	LLFile::rename(log_file, old_log_file);
+	LLError::logToFile(log_file);
+
+	// initialize gthreads and gtk+
+	if (!g_thread_supported())
+	{
+		g_thread_init(NULL);
+		gdk_threads_init();
+	}
+
+	gtk_init(&argc, &argv);
+
+	// create UI
+	updater_app_ui_init(&app_state);
+
+	//llinfos << "SAMPLE TRANSLATION IS: " << LLTrans::getString("LoginInProgress") << llendl;
+
+	// create download thread
+	worker_thread = g_thread_create
+		(GThreadFunc(worker_thread_cb), &app_state, FALSE, NULL);
+
+	gdk_threads_enter();
+	gtk_main();
+	gdk_threads_leave();
+
+	return (app_state.failure == FALSE) ? 0 : 1;
+}