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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
*
* 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 "treesocket.h"
#include "treeserver.h"
#include "utils.h"
CmdResult CommandMetadata::Handle(const std::vector<std::string>& params, User *srcuser)
{
if (params[0] == "*")
{
std::string value = params.size() < 3 ? "" : params[2];
FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(NULL,params[1],value));
}
else if (*(params[0].c_str()) == '#')
{
Channel* c = ServerInstance->FindChan(params[0]);
if (c)
{
/*
* Since protocol version 1204 we have the channel TS in METADATA concerning channels and
* we only accept them if the timestamps match. Previous versions don't send a timestamp
* so we need to fall back to the old behaviour and accept what they sent.
*
* Pre-1204: :sid METADATA #chan metaname :value
* 1204 and later: :sid METADATA #chan chants metaname :value
*
*/
// Determine the protocol version of the sender
SpanningTreeUtilities* Utils = ((ModuleSpanningTree*) (Module*) creator)->Utils;
TreeServer* srcserver = Utils->FindServer(srcuser->server);
if (!srcserver)
{
// Illegal prefix in METADATA
return CMD_FAILURE;
}
bool has_ts = (srcserver->Socket->proto_version >= 1204);
// If we got a channel TS compare it with ours. If it's different, drop the command.
// Also drop the command if we are using 1204, but there aren't enough parameters.
if ((has_ts) && ((ConvToInt(params[1]) != c->age) || params.size() < 3))
return CMD_FAILURE;
// Now do things as usual but if required, apply an offset to the index when accessing params
unsigned int indexoffset = has_ts ? 1 : 0;
std::string value = params.size() < (3+indexoffset) ? "" : params[2+indexoffset];
ExtensionItem* item = ServerInstance->Extensions.GetItem(params[1+indexoffset]);
if (item)
item->unserialize(FORMAT_NETWORK, c, value);
FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(c,params[1+indexoffset],value));
// Finally, if they haven't sent us a channel TS add ours before passing the command on
if (!has_ts)
{
parameterlist& p = const_cast<parameterlist&>(params);
p.insert(p.begin()+1, ConvToStr(c->age));
}
}
}
else if (*(params[0].c_str()) != '#')
{
User* u = ServerInstance->FindNick(params[0]);
if (u)
{
std::string value = params.size() < 3 ? "" : params[2];
ExtensionItem* item = ServerInstance->Extensions.GetItem(params[1]);
if (item)
item->unserialize(FORMAT_NETWORK, u, value);
FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(u,params[1],value));
}
}
return CMD_SUCCESS;
}
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