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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 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/>.
*/
#pragma once
#include "utils.h"
#include "treeserver.h"
class ProtocolException : public ModuleException
{
public:
ProtocolException(const std::string& msg)
: ModuleException("Protocol violation: " + msg)
{
}
};
/** Base class for server-to-server commands that may have a (remote) user source or server source.
*/
class ServerCommand : public CommandBase
{
public:
ServerCommand(Module* Creator, const std::string& Name, unsigned int MinPara = 0, unsigned int MaxPara = 0);
/** Register this object in the ServerCommandManager
*/
void RegisterService() CXX11_OVERRIDE;
virtual CmdResult Handle(User* user, std::vector<std::string>& parameters) = 0;
virtual RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters) CXX11_OVERRIDE;
/**
* Extract the TS from a string.
* @param tsstr The string containing the TS.
* @return The raw timestamp value.
* This function throws a ProtocolException if it considers the TS invalid. Note that the detection of
* invalid timestamps is not designed to be bulletproof, only some cases - like "0" - trigger an exception.
*/
static time_t ExtractTS(const std::string& tsstr);
};
/** Base class for server-to-server command handlers which are only valid if their source is a user.
* When a server sends a command of this type and the source is a server (sid), the link is aborted.
*/
template <class T>
class UserOnlyServerCommand : public ServerCommand
{
public:
UserOnlyServerCommand(Module* Creator, const std::string& Name, unsigned int MinPara = 0, unsigned int MaxPara = 0)
: ServerCommand(Creator, Name, MinPara, MaxPara) { }
CmdResult Handle(User* user, std::vector<std::string>& parameters)
{
RemoteUser* remoteuser = IS_REMOTE(user);
if (!remoteuser)
throw ProtocolException("Invalid source");
return static_cast<T*>(this)->HandleRemote(remoteuser, parameters);
}
};
/** Base class for server-to-server command handlers which are only valid if their source is a server.
* When a server sends a command of this type and the source is a user (uuid), the link is aborted.
*/
template <class T>
class ServerOnlyServerCommand : public ServerCommand
{
public:
ServerOnlyServerCommand(Module* Creator, const std::string& Name, unsigned int MinPara = 0, unsigned int MaxPara = 0)
: ServerCommand(Creator, Name, MinPara, MaxPara) { }
CmdResult Handle(User* user, std::vector<std::string>& parameters)
{
if (!IS_SERVER(user))
throw ProtocolException("Invalid source");
TreeServer* server = TreeServer::Get(user);
return static_cast<T*>(this)->HandleServer(server, parameters);
}
};
class ServerCommandManager
{
typedef TR1NS::unordered_map<std::string, ServerCommand*> ServerCommandMap;
ServerCommandMap commands;
public:
ServerCommand* GetHandler(const std::string& command) const;
bool AddCommand(ServerCommand* cmd);
};
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