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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2012-2013 Attila Molnar <attilamolnar@hush.com>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "commands.h"
#include "utils.h"
#include "treeserver.h"
#include "treesocket.h"
CmdResult CommandIJoin::HandleRemote(const std::vector<std::string>& params, RemoteUser* user)
{
Channel* chan = ServerInstance->FindChan(params[0]);
if (!chan)
{
// Desync detected, recover
// Ignore the join and send RESYNC, this will result in the remote server sending all channel data to us
ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Received IJOIN for non-existant channel: " + params[0]);
parameterlist p;
p.push_back(params[0]);
SpanningTreeUtilities* Utils = ((ModuleSpanningTree*)(Module*)creator)->Utils;
Utils->DoOneToOne(ServerInstance->Config->GetSID(), "RESYNC", p, user->server);
return CMD_FAILURE;
}
bool apply_modes;
if (params.size() > 1)
{
time_t RemoteTS = ConvToInt(params[1]);
if (!RemoteTS)
{
ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Invalid TS in IJOIN: " + params[1]);
return CMD_INVALID;
}
if (RemoteTS < chan->age)
{
ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Attempted to lower TS via IJOIN. Channel=" + params[0] + " RemoteTS=" + params[1] + " LocalTS=" + ConvToStr(chan->age));
return CMD_INVALID;
}
apply_modes = ((params.size() > 2) && (RemoteTS == chan->age));
}
else
apply_modes = false;
chan->ForceJoin(user, apply_modes ? ¶ms[2] : NULL);
return CMD_SUCCESS;
}
CmdResult CommandResync::HandleServer(const std::vector<std::string>& params, FakeUser* user)
{
ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Resyncing " + params[0]);
Channel* chan = ServerInstance->FindChan(params[0]);
if (!chan)
{
// This can happen for a number of reasons, safe to ignore
ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Channel does not exist");
return CMD_FAILURE;
}
SpanningTreeUtilities* Utils = ((ModuleSpanningTree*)(Module*)creator)->Utils;
TreeServer* server = Utils->FindServer(user->server);
if (!server)
return CMD_FAILURE;
TreeSocket* socket = server->GetSocket();
if (!socket)
{
ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Received RESYNC with a source that is not directly connected: " + user->uuid);
return CMD_INVALID;
}
// Send all known information about the channel
socket->SyncChannel(chan);
return CMD_SUCCESS;
}
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