/**
* SAVE command - force nick change to UID on timestamp match
*/
CmdResult CommandSave::Handle(User* user, std::vector<std::string>& params)
{
User* u = ServerInstance->FindUUID(params[0]);
if ((!u) || (IS_SERVER(u)))
return CMD_FAILURE;
time_t ts = atol(params[1].c_str());
if (u->age == ts)
u->ChangeNick(u->uuid, SavedTimestamp);
return CMD_SUCCESS;
}
CmdResult Handle (const std::vector<std::string>& parameters, User *user)
{
User* target = ServerInstance->FindNick(parameters[0]);
/* Do local sanity checks and bails */
if (IS_LOCAL(user))
{
if (target && ServerInstance->ULine(target->server))
{
user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Cannot use an SA command on a u-lined client",user->nick.c_str());
return CMD_FAILURE;
}
if ((!target) || (target->registered != REG_ALL))
{
user->WriteServ("NOTICE %s :*** No such nickname: '%s'", user->nick.c_str(), parameters[0].c_str());
return CMD_FAILURE;
}
if (!ServerInstance->IsNick(parameters[1], ServerInstance->Config->Limits.NickMax))
{
user->WriteServ("NOTICE %s :*** Invalid nickname '%s'", user->nick.c_str(), parameters[1].c_str());
return CMD_FAILURE;
}
}
/* Have we hit target's server yet? */
if (target && IS_LOCAL(target))
{
std::string oldnick = user->nick;
std::string newnick = target->nick;
if (target->ChangeNick(parameters[1], true))
{
ServerInstance->SNO->WriteGlobalSno('a', oldnick+" used SANICK to change "+newnick+" to "+parameters[1]);
}
else
{
ServerInstance->SNO->WriteGlobalSno('a', oldnick+" failed SANICK (from "+newnick+" to "+parameters[1]+")");
}
}
return CMD_SUCCESS;
}
/*
** NICK - new
** source = NULL
** parv[0] = nickname
** parv[1] = hopcount
** parv[2] = timestamp
** parv[3] = modes
** parv[4] = username
** parv[5] = hostname
** parv[6] = server
** parv[7] = servicestamp
** parv[8] = IP
** parv[9] = info
** NICK - change
** source = oldnick
** parv[0] = new nickname
** parv[1] = hopcount
*/
void bahamut::Nick::Run(MessageSource &source, const std::vector<Anope::string> ¶ms)
{
if (params.size() == 10)
{
Server *s = Server::Find(params[6]);
if (s == nullptr)
{
Log(LOG_DEBUG) << "User " << params[0] << " introduced from non-existent server " << params[6] << "?";
return;
}
NickServ::Nick *na = nullptr;
time_t signon = 0, stamp = 0;
try
{
signon = convertTo<time_t>(params[2]);
stamp = convertTo<time_t>(params[7]);
}
catch (const ConvertException &)
{
}
if (signon && signon == stamp && NickServ::service)
na = NickServ::service->FindNick(params[0]);
User::OnIntroduce(params[0], params[4], params[5], "", params[8], s, params[9], signon, params[3], "", na ? na->GetAccount() : nullptr);
}
else
{
User *u = source.GetUser();
if (u)
u->ChangeNick(params[0]);
}
}
CmdResult CommandUID::HandleServer(TreeServer* remoteserver, std::vector<std::string>& params)
{
/**
* 0 1 2 3 4 5 6 7 8 9 (n-1)
* UID uuid age nick host dhost ident ip.string signon +modes (modepara) :gecos
*/
time_t age_t = ServerCommand::ExtractTS(params[1]);
time_t signon = ServerCommand::ExtractTS(params[7]);
std::string empty;
const std::string& modestr = params[8];
// Check if the length of the uuid is correct and confirm the sid portion of the uuid matches the sid of the server introducing the user
if (params[0].length() != UIDGenerator::UUID_LENGTH || params[0].compare(0, 3, remoteserver->GetID()))
throw ProtocolException("Bogus UUID");
// Sanity check on mode string: must begin with '+'
if (modestr[0] != '+')
throw ProtocolException("Invalid mode string");
// See if there is a nick collision
User* collideswith = ServerInstance->FindNickOnly(params[2]);
if ((collideswith) && (collideswith->registered != REG_ALL))
{
// User that the incoming user is colliding with is not fully registered, we force nick change the
// unregistered user to their uuid and tell them what happened
collideswith->WriteFrom(collideswith, "NICK %s", collideswith->uuid.c_str());
collideswith->WriteNumeric(ERR_NICKNAMEINUSE, collideswith->nick, "Nickname overruled.");
// Clear the bit before calling User::ChangeNick() to make it NOT run the OnUserPostNick() hook
collideswith->registered &= ~REG_NICK;
collideswith->ChangeNick(collideswith->uuid);
}
else if (collideswith)
{
// The user on this side is registered, handle the collision
bool they_change = Utils->DoCollision(collideswith, remoteserver, age_t, params[5], params[6], params[0], "UID");
if (they_change)
{
// The client being introduced needs to change nick to uuid, change the nick in the message before
// processing/forwarding it. Also change the nick TS to CommandSave::SavedTimestamp.
age_t = CommandSave::SavedTimestamp;
params[1] = ConvToStr(CommandSave::SavedTimestamp);
params[2] = params[0];
}
}
/* For remote users, we pass the UUID they sent to the constructor.
* If the UUID already exists User::User() throws an exception which causes this connection to be closed.
*/
RemoteUser* _new = new SpanningTree::RemoteUser(params[0], remoteserver);
ServerInstance->Users->clientlist[params[2]] = _new;
_new->nick = params[2];
_new->host = params[3];
_new->dhost = params[4];
_new->ident = params[5];
_new->fullname = params.back();
_new->registered = REG_ALL;
_new->signon = signon;
_new->age = age_t;
unsigned int paramptr = 9;
for (std::string::const_iterator v = modestr.begin(); v != modestr.end(); ++v)
{
// Accept more '+' chars, for now
if (*v == '+')
continue;
/* For each mode thats set, find the mode handler and set it on the new user */
ModeHandler* mh = ServerInstance->Modes->FindMode(*v, MODETYPE_USER);
if (!mh)
throw ProtocolException("Unrecognised mode '" + std::string(1, *v) + "'");
if (mh->NeedsParam(true))
{
if (paramptr >= params.size() - 1)
throw ProtocolException("Out of parameters while processing modes");
std::string mp = params[paramptr++];
/* IMPORTANT NOTE:
* All modes are assumed to succeed here as they are being set by a remote server.
* Modes CANNOT FAIL here. If they DO fail, then the failure is ignored. This is important
* to note as all but one modules currently cannot ever fail in this situation, except for
* m_servprotect which specifically works this way to prevent the mode being set ANYWHERE
* but here, at client introduction. You may safely assume this behaviour is standard and
* will not change in future versions if you want to make use of this protective behaviour
* yourself.
*/
mh->OnModeChange(_new, _new, NULL, mp, true);
}
else
mh->OnModeChange(_new, _new, NULL, empty, true);
_new->SetMode(mh, true);
}
_new->SetClientIP(params[6].c_str());
ServerInstance->Users->AddClone(_new);
remoteserver->UserCount++;
bool dosend = true;
if ((Utils->quiet_bursts && remoteserver->IsBehindBursting()) || _new->server->IsSilentULine())
dosend = false;
if (dosend)
ServerInstance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s (%s) [%s]", remoteserver->GetName().c_str(), _new->GetFullRealHost().c_str(), _new->GetIPString().c_str(), _new->fullname.c_str());
FOREACH_MOD(OnPostConnect, (_new));
return CMD_SUCCESS;
}
