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diff --git a/indra/newview/llviewerhome.cpp b/indra/newview/llviewerhome.cpp
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+++ b/indra/newview/llviewerhome.cpp
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+/** 
+ * @file llviewerhome.cpp
+ * @brief Model (non-View) component for the web-based Home side panel
+ * @author Martin Reddy
+ *
+ * $LicenseInfo:firstyear=2009&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+#include "llviewerhome.h"
+
+#include "lllogininstance.h"
+#include "llsd.h"
+#include "llui.h"
+#include "lluri.h"
+#include "llviewercontrol.h"
+#include "llweb.h"
+
+//static
+std::string LLViewerHome::getHomeURL()
+{	
+	// Return the URL to display in the Home side tray. We read
+	// this value from settings.xml and support various substitutions
+
+	LLSD substitution;
+	substitution["AUTH_TOKEN"] = LLURI::escape(getAuthKey());
+
+	// get the home URL from the settings.xml file
+	std::string homeURL = gSavedSettings.getString("HomeSidePanelURL");
+
+	// support a grid-level override of the URL from login.cgi
+	LLSD grid_url = LLLoginInstance::getInstance()->getResponse("home_sidetray_url");
+	if (! grid_url.asString().empty())
+	{
+		homeURL = grid_url.asString();
+	}	
+
+	// expand all substitution strings in the URL and return it
+	// (also adds things like [LANGUAGE], [VERSION], [OS], etc.)
+	return LLWeb::expandURLSubstitutions(homeURL, substitution);
+}
+
+//static
+std::string LLViewerHome::getAuthKey()
+{
+	// return the value of the (optional) auth token returned by login.cgi
+	// this lets the server provide an authentication token that we can
+	// blindly pass to the Home web page for it to perform authentication.
+	// We use "home_sidetray_token", and fallback to "auth_token" if not
+	// present.
+	LLSD auth_token = LLLoginInstance::getInstance()->getResponse("home_sidetray_token");
+	if (auth_token.asString().empty())
+	{
+		auth_token = LLLoginInstance::getInstance()->getResponse("auth_token");
+	}
+	return auth_token.asString();
+}
+