/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla IPC.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Darin Fisher <darin@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include <string.h>
#include "ipcLog.h"
#include "ipcCommandModule.h"
#include "ipcModule.h"
#include "ipcClient.h"
#include "ipcMessage.h"
#include "ipcMessageUtils.h"
#include "ipcd.h"
#include "ipcm.h"

typedef void (* ipcmMsgHandler)(ipcClient *, const ipcMessage *);

//
// message handlers
//

static void
ipcm_OnPing(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got PING\n"));

    IPC_SendMsg(client, new ipcmMessagePing());
}

static void
ipcm_OnClientHello(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got CLIENT_HELLO\n"));

    ipcMessageCast<ipcmMessageClientHello> msg(rawMsg);
    const char *name = msg->PrimaryName();
    if (name)
        client->AddName(name);

    IPC_SendMsg(client, new ipcmMessageClientID(client->ID()));
}

static void
ipcm_OnClientAddName(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got CLIENT_ADD_NAME\n"));

    ipcMessageCast<ipcmMessageClientAddName> msg(rawMsg);
    const char *name = msg->Name();
    if (name)
        client->AddName(name);
}

static void
ipcm_OnClientDelName(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got CLIENT_DEL_NAME\n"));

    ipcMessageCast<ipcmMessageClientDelName> msg(rawMsg);
    const char *name = msg->Name();
    if (name)
        client->DelName(name);
}

static void
ipcm_OnClientAddTarget(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got CLIENT_ADD_TARGET\n"));

    ipcMessageCast<ipcmMessageClientAddTarget> msg(rawMsg);
    client->AddTarget(msg->Target());
}

static void
ipcm_OnClientDelTarget(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got CLIENT_DEL_TARGET\n"));

    ipcMessageCast<ipcmMessageClientDelTarget> msg(rawMsg);
    client->DelTarget(msg->Target());
}

static void
ipcm_OnQueryClientByName(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got QUERY_CLIENT_BY_NAME\n"));

    ipcMessageCast<ipcmMessageQueryClientByName> msg(rawMsg);
    ipcClient *result = IPC_GetClientByName(msg->Name());
    if (result) {
        LOG(("  client exists w/ ID = %u\n", result->ID()));
        IPC_SendMsg(client, new ipcmMessageClientID(result->ID()));
    }
    else {
        LOG(("  client does not exist\n"));
        IPC_SendMsg(client, new ipcmMessageError(IPCM_ERROR_CLIENT_NOT_FOUND));
    }
}

static void
ipcm_OnForward(ipcClient *client, const ipcMessage *rawMsg)
{
    LOG(("got FORWARD\n"));

    ipcMessageCast<ipcmMessageForward> msg(rawMsg);

    ipcClient *dest = IPC_GetClientByID(msg->DestClientID());
    if (!dest) {
        LOG(("  destination client not found!\n"));
        return;
    }
    ipcMessage *newMsg = new ipcMessage(msg->InnerTarget(),
                                        msg->InnerData(),
                                        msg->InnerDataLen());
    IPC_SendMsg(dest, newMsg);
}

void
IPCM_HandleMsg(ipcClient *client, const ipcMessage *rawMsg)
{
    static ipcmMsgHandler handlers[] =
    {
        ipcm_OnPing,
        NULL, // ERROR
        ipcm_OnClientHello,
        NULL, // CLIENT_ID
        NULL, // CLIENT_INFO
        ipcm_OnClientAddName,
        ipcm_OnClientDelName,
        ipcm_OnClientAddTarget,
        ipcm_OnClientDelTarget,
        ipcm_OnQueryClientByName,
        NULL, // QUERY_CLIENT_INFO
        ipcm_OnForward,
    };

    int type = IPCM_GetMsgType(rawMsg);
    LOG(("IPCM_HandleMsg [type=%d]\n", type));

    if (type < IPCM_MSG_TYPE_UNKNOWN) {
        if (handlers[type]) {
            ipcmMsgHandler handler = handlers[type];
            handler(client, rawMsg);
        }
    }
}