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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006-2007 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
*
* 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 "listmode.h"
enum
{
RPL_CHECK = 802
};
class CheckContext
{
User* const user;
const std::string& target;
public:
CheckContext(User* u, const std::string& targetstr)
: user(u)
, target(targetstr)
{
Write("START", target);
}
~CheckContext()
{
Write("END", target);
}
void Write(const std::string& type, const std::string& text)
{
user->WriteRemoteNumeric(RPL_CHECK, type, text);
}
User* GetUser() const { return user; }
void DumpListMode(const ListModeBase::ModeList* list)
{
if (!list)
return;
CheckContext::List modelist(*this, "modelist");
for (ListModeBase::ModeList::const_iterator i = list->begin(); i != list->end(); ++i)
modelist.Add(i->mask);
modelist.Flush();
}
void DumpExt(Extensible* ext)
{
CheckContext::List extlist(*this, "metadata");
for(Extensible::ExtensibleStore::const_iterator i = ext->GetExtList().begin(); i != ext->GetExtList().end(); ++i)
{
ExtensionItem* item = i->first;
std::string value = item->serialize(FORMAT_USER, ext, i->second);
if (!value.empty())
Write("meta:" + item->name, value);
else if (!item->name.empty())
extlist.Add(item->name);
}
extlist.Flush();
}
class List : public Numeric::GenericBuilder<' ', false, Numeric::WriteRemoteNumericSink>
{
public:
List(CheckContext& context, const char* checktype)
: Numeric::GenericBuilder<' ', false, Numeric::WriteRemoteNumericSink>(Numeric::WriteRemoteNumericSink(context.GetUser()), RPL_CHECK, false, (IS_LOCAL(context.GetUser()) ? context.GetUser()->nick.length() : ServerInstance->Config->Limits.NickMax) + strlen(checktype) + 1)
{
GetNumeric().push(checktype).push(std::string());
}
};
};
/** Handle /CHECK
*/
class CommandCheck : public Command
{
UserModeReference snomaskmode;
std::string GetSnomasks(User* user)
{
std::string ret;
if (snomaskmode)
ret = snomaskmode->GetUserParameter(user);
if (ret.empty())
ret = "+";
return ret;
}
static std::string GetAllowedOperOnlyModes(LocalUser* user, ModeType modetype)
{
std::string ret;
const ModeParser::ModeHandlerMap& modes = ServerInstance->Modes.GetModes(modetype);
for (ModeParser::ModeHandlerMap::const_iterator i = modes.begin(); i != modes.end(); ++i)
{
const ModeHandler* const mh = i->second;
if ((mh->NeedsOper()) && (user->HasModePermission(mh)))
ret.push_back(mh->GetModeChar());
}
return ret;
}
public:
CommandCheck(Module* parent)
: Command(parent,"CHECK", 1)
, snomaskmode(parent, "snomask")
{
flags_needed = 'o'; syntax = "<nickname>|<ip>|<hostmask>|<channel> <server>";
}
std::string timestring(time_t time)
{
char timebuf[60];
struct tm *mytime = gmtime(&time);
strftime(timebuf, 59, "%Y-%m-%d %H:%M:%S UTC (", mytime);
std::string ret(timebuf);
ret.append(ConvToStr(time)).push_back(')');
return ret;
}
CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
{
if (parameters.size() > 1 && parameters[1] != ServerInstance->Config->ServerName)
return CMD_SUCCESS;
User *targuser;
Channel *targchan;
std::string chliststr;
targuser = ServerInstance->FindNick(parameters[0]);
targchan = ServerInstance->FindChan(parameters[0]);
/*
* Syntax of a /check reply:
* :server.name 802 target START <target>
* :server.name 802 target <field> :<value>
* :server.name 802 target END <target>
*/
// Constructor sends START, destructor sends END
CheckContext context(user, parameters[0]);
if (targuser)
{
LocalUser* loctarg = IS_LOCAL(targuser);
/* /check on a user */
context.Write("nuh", targuser->GetFullHost());
context.Write("realnuh", targuser->GetFullRealHost());
context.Write("realname", targuser->GetRealName());
context.Write("modes", targuser->GetModeLetters());
context.Write("snomasks", GetSnomasks(targuser));
context.Write("server", targuser->server->GetName());
context.Write("uid", targuser->uuid);
context.Write("signon", timestring(targuser->signon));
context.Write("nickts", timestring(targuser->age));
if (loctarg)
context.Write("lastmsg", timestring(loctarg->idle_lastmsg));
if (targuser->IsAway())
{
/* user is away */
context.Write("awaytime", timestring(targuser->awaytime));
context.Write("awaymsg", targuser->awaymsg);
}
if (targuser->IsOper())
{
OperInfo* oper = targuser->oper;
/* user is an oper of type ____ */
context.Write("opertype", oper->name);
if (loctarg)
{
std::string umodes = GetAllowedOperOnlyModes(loctarg, MODETYPE_USER);
std::string cmodes = GetAllowedOperOnlyModes(loctarg, MODETYPE_CHANNEL);
context.Write("modeperms", "user=" + umodes + " channel=" + cmodes);
CheckContext::List opcmdlist(context, "commandperms");
opcmdlist.Add(oper->AllowedOperCommands.ToString());
opcmdlist.Flush();
CheckContext::List privlist(context, "permissions");
opcmdlist.Add(oper->AllowedPrivs.ToString());
privlist.Flush();
}
}
if (loctarg)
{
context.Write("clientaddr", loctarg->client_sa.str());
context.Write("serveraddr", loctarg->server_sa.str());
std::string classname = loctarg->GetClass()->name;
if (!classname.empty())
context.Write("connectclass", classname);
}
else
context.Write("onip", targuser->GetIPString());
CheckContext::List chanlist(context, "onchans");
for (User::ChanList::iterator i = targuser->chans.begin(); i != targuser->chans.end(); i++)
{
Membership* memb = *i;
Channel* c = memb->chan;
char prefix = memb->GetPrefixChar();
if (prefix)
chliststr.push_back(prefix);
chliststr.append(c->name);
chanlist.Add(chliststr);
chliststr.clear();
}
chanlist.Flush();
context.DumpExt(targuser);
}
else if (targchan)
{
/* /check on a channel */
context.Write("timestamp", timestring(targchan->age));
if (!targchan->topic.empty())
{
/* there is a topic, assume topic related information exists */
context.Write("topic", targchan->topic);
context.Write("topic_setby", targchan->setby);
context.Write("topic_setat", timestring(targchan->topicset));
}
context.Write("modes", targchan->ChanModes(true));
context.Write("membercount", ConvToStr(targchan->GetUserCounter()));
/* now the ugly bit, spool current members of a channel. :| */
const Channel::MemberMap& ulist = targchan->GetUsers();
/* note that unlike /names, we do NOT check +i vs in the channel */
for (Channel::MemberMap::const_iterator i = ulist.begin(); i != ulist.end(); ++i)
{
/*
* Unlike Asuka, I define a clone as coming from the same host. --w00t
*/
const UserManager::CloneCounts& clonecount = ServerInstance->Users->GetCloneCounts(i->first);
context.Write("member", InspIRCd::Format("%-3u %s%s (%s@%s) %s ", clonecount.global,
i->second->GetAllPrefixChars().c_str(), i->first->nick.c_str(),
i->first->ident.c_str(), i->first->GetDisplayedHost().c_str(), i->first->GetRealName().c_str()));
}
const ModeParser::ListModeList& listmodes = ServerInstance->Modes->GetListModes();
for (ModeParser::ListModeList::const_iterator i = listmodes.begin(); i != listmodes.end(); ++i)
context.DumpListMode((*i)->GetList(targchan));
context.DumpExt(targchan);
}
else
{
/* /check on an IP address, or something that doesn't exist */
long x = 0;
/* hostname or other */
const user_hash& users = ServerInstance->Users->GetUsers();
for (user_hash::const_iterator a = users.begin(); a != users.end(); ++a)
{
if (InspIRCd::Match(a->second->GetRealHost(), parameters[0], ascii_case_insensitive_map) || InspIRCd::Match(a->second->GetDisplayedHost(), parameters[0], ascii_case_insensitive_map))
{
/* host or vhost matches mask */
context.Write("match", ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->GetRealName());
}
/* IP address */
else if (InspIRCd::MatchCIDR(a->second->GetIPString(), parameters[0]))
{
/* same IP. */
context.Write("match", ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->GetRealName());
}
}
context.Write("matches", ConvToStr(x));
}
// END is sent by the CheckContext destructor
return CMD_SUCCESS;
}
RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE
{
if ((parameters.size() > 1) && (parameters[1].find('.') != std::string::npos))
return ROUTE_OPT_UCAST(parameters[1]);
return ROUTE_LOCALONLY;
}
};
class ModuleCheck : public Module
{
CommandCheck mycommand;
public:
ModuleCheck() : mycommand(this)
{
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("CHECK command, view user, channel, IP address or hostname information", VF_VENDOR|VF_OPTCOMMON);
}
};
MODULE_INIT(ModuleCheck)