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/** 
 * @file llviewergenericmessage.cpp
 * @brief Handle processing of "generic messages" which contain short lists of strings.
 * @author James Cook
 *
 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 * 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 "llviewergenericmessage.h"

#include "lldispatcher.h"
#include "lluuid.h"
#include "message.h"

#include "llagent.h"


LLDispatcher gGenericDispatcher;


void send_generic_message(const std::string& method,
						  const std::vector<std::string>& strings,
						  const LLUUID& invoice)
{
	LLMessageSystem* msg = gMessageSystem;
	msg->newMessage("GenericMessage");
	msg->nextBlockFast(_PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
	msg->addUUIDFast(_PREHASH_TransactionID, LLUUID::null); //not used
	msg->nextBlock("MethodData");
	msg->addString("Method", method);
	msg->addUUID("Invoice", invoice);
	if(strings.empty())
	{
		msg->nextBlock("ParamList");
		msg->addString("Parameter", NULL);
	}
	else
	{
		std::vector<std::string>::const_iterator it = strings.begin();
		std::vector<std::string>::const_iterator end = strings.end();
		for(; it != end; ++it)
		{
			msg->nextBlock("ParamList");
			msg->addString("Parameter", *it);
		}
	}
	gAgent.sendReliableMessage();
}



void process_generic_message(LLMessageSystem* msg, void**)
{
	LLUUID agent_id;
	msg->getUUID("AgentData", "AgentID", agent_id);
	if (agent_id != gAgent.getID())
	{
		llwarns << "GenericMessage for wrong agent" << llendl;
		return;
	}

	std::string request;
	LLUUID invoice;
	LLDispatcher::sparam_t strings;
	LLDispatcher::unpackMessage(msg, request, invoice, strings);

	if(!gGenericDispatcher.dispatch(request, invoice, strings))
	{
		llwarns << "GenericMessage " << request << " failed to dispatch" 
			<< llendl;
	}
}