Imported existing code

indra/newview/llcommandhandler.cpp

@@ -0,0 +1,134 @@
+/**
+ * @file llcommandhandler.cpp
+ * @brief Central registry for text-driven "commands", most of
+ * which manipulate user interface.  For example, the command
+ * "agent (uuid) about" will open the UI for an avatar's profile.
+ *
+ * $LicenseInfo:firstyear=2007&license=viewergpl$
+ * 
+ * Copyright (c) 2007-2009, 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 "llviewerprecompiledheaders.h"
+
+#include "llcommandhandler.h"
+
+// system includes
+#include <boost/tokenizer.hpp>
+
+//---------------------------------------------------------------------------
+// Underlying registry for command handlers, not directly accessible.
+//---------------------------------------------------------------------------
+struct LLCommandHandlerInfo
+{
+	bool mRequireTrustedBrowser;
+	LLCommandHandler* mHandler;	// safe, all of these are static objects
+};
+
+class LLCommandHandlerRegistry
+{
+public:
+	static LLCommandHandlerRegistry& instance();
+	void add(const char* cmd, bool require_trusted_browser, LLCommandHandler* handler);
+	bool dispatch(const std::string& cmd,
+				  const LLSD& params,
+				  const LLSD& query_map,
+				  LLMediaCtrl* web,
+				  bool trusted_browser);
+
+private:
+	std::map<std::string, LLCommandHandlerInfo> mMap;
+};
+
+// static 
+LLCommandHandlerRegistry& LLCommandHandlerRegistry::instance()
+{
+	// Force this to be initialized on first call, because we're going
+	// to be adding items to the std::map before main() and we can't
+	// rely on a global being initialized in the right order.
+	static LLCommandHandlerRegistry instance;
+	return instance;
+}
+
+void LLCommandHandlerRegistry::add(const char* cmd, bool require_trusted_browser, LLCommandHandler* handler)
+{
+	LLCommandHandlerInfo info;
+	info.mRequireTrustedBrowser = require_trusted_browser;
+	info.mHandler = handler;
+
+	mMap[cmd] = info;
+}
+
+bool LLCommandHandlerRegistry::dispatch(const std::string& cmd,
+										const LLSD& params,
+										const LLSD& query_map,
+										LLMediaCtrl* web,
+										bool trusted_browser)
+{
+	std::map<std::string, LLCommandHandlerInfo>::iterator it = mMap.find(cmd);
+	if (it == mMap.end()) return false;
+	const LLCommandHandlerInfo& info = it->second;
+	if (!trusted_browser && info.mRequireTrustedBrowser)
+	{
+		// block request from external browser, but report as
+		// "handled" because it was well formatted.
+		LL_WARNS_ONCE("SLURL") << "Blocked SLURL command from untrusted browser" << LL_ENDL;
+		return true;
+	}
+	if (!info.mHandler) return false;
+	return info.mHandler->handle(params, query_map, web);
+}
+
+//---------------------------------------------------------------------------
+// Automatic registration of commands, runs before main()
+//---------------------------------------------------------------------------
+
+LLCommandHandler::LLCommandHandler(const char* cmd,
+								   bool require_trusted_browser)
+{
+	LLCommandHandlerRegistry::instance().add(
+			cmd, require_trusted_browser, this);
+}
+
+LLCommandHandler::~LLCommandHandler()
+{
+	// Don't care about unregistering these, all the handlers
+	// should be static objects.
+}
+
+//---------------------------------------------------------------------------
+// Public interface
+//---------------------------------------------------------------------------
+
+// static
+bool LLCommandDispatcher::dispatch(const std::string& cmd,
+								   const LLSD& params,
+								   const LLSD& query_map,
+								   LLMediaCtrl* web,
+								   bool trusted_browser)
+{
+	return LLCommandHandlerRegistry::instance().dispatch(
+		cmd, params, query_map, web, trusted_browser);
+}