/*
* InspIRCd -- Internet Relay Chat Daemon
*
+ * Copyright (C) 2019 iwalkalone <iwalkalone69@gmail.com>
+ * Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
+ * Copyright (C) 2013-2016, 2018 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2013, 2018-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2013, 2015 Adam <Adam@anope.org>
+ * Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
+ * Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
- * Copyright (C) 2008 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2008-2010 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
- * Copyright (C) 2008 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
#include "inspircd.h"
#include "xline.h"
-#include "bancache.h"
#include "iohook.h"
+namespace
+{
+ class WriteCommonQuit : public User::ForEachNeighborHandler
+ {
+ ClientProtocol::Messages::Quit quitmsg;
+ ClientProtocol::Event quitevent;
+ ClientProtocol::Messages::Quit operquitmsg;
+ ClientProtocol::Event operquitevent;
+
+ void Execute(LocalUser* user) CXX11_OVERRIDE
+ {
+ user->Send(user->IsOper() ? operquitevent : quitevent);
+ }
+
+ public:
+ WriteCommonQuit(User* user, const std::string& msg, const std::string& opermsg)
+ : quitmsg(user, msg)
+ , quitevent(ServerInstance->GetRFCEvents().quit, quitmsg)
+ , operquitmsg(user, opermsg)
+ , operquitevent(ServerInstance->GetRFCEvents().quit, operquitmsg)
+ {
+ user->ForEachNeighbor(*this, false);
+ }
+ };
+
+ void CheckPingTimeout(LocalUser* user)
+ {
+ // Check if it is time to ping the user yet.
+ if (ServerInstance->Time() < user->nextping)
+ return;
+
+ // This user didn't answer the last ping, remove them.
+ if (!user->lastping)
+ {
+ ModResult res;
+ FIRST_MOD_RESULT(OnConnectionFail, res, (user, I_ERR_TIMEOUT));
+ if (res == MOD_RES_ALLOW)
+ {
+ // A module is preventing this user from being timed out.
+ user->lastping = 1;
+ user->nextping = ServerInstance->Time() + user->MyClass->GetPingTime();
+ return;
+ }
+
+ time_t secs = ServerInstance->Time() - (user->nextping - user->MyClass->GetPingTime());
+ const std::string message = "Ping timeout: " + ConvToStr(secs) + (secs != 1 ? " seconds" : " second");
+ ServerInstance->Users.QuitUser(user, message);
+ return;
+ }
+
+ // Send a ping to the client.
+ ClientProtocol::Messages::Ping ping;
+ user->Send(ServerInstance->GetRFCEvents().ping, ping);
+ user->lastping = 0;
+ user->nextping = ServerInstance->Time() + user->MyClass->GetPingTime();
+ }
+
+ void CheckRegistrationTimeout(LocalUser* user)
+ {
+ if (user->GetClass() && (ServerInstance->Time() > (user->signon + user->GetClass()->GetRegTimeout())))
+ {
+ // Either the user did not send NICK/USER or a module blocked registration in
+ // OnCheckReady until the client timed out.
+ ServerInstance->Users.QuitUser(user, "Registration timeout");
+ }
+ }
+
+ void CheckModulesReady(LocalUser* user)
+ {
+ ModResult res;
+ FIRST_MOD_RESULT(OnCheckReady, res, (user));
+ if (res == MOD_RES_PASSTHRU)
+ {
+ // User has sent NICK/USER and modules are ready.
+ user->FullConnect();
+ return;
+ }
+
+ // If the user has been quit in OnCheckReady then we shouldn't quit
+ // them again for having a registration timeout.
+ if (!user->quitting)
+ CheckRegistrationTimeout(user);
+ }
+}
+
UserManager::UserManager()
- : clientlist(new user_hash)
- , uuidlist(new user_hash)
+ : already_sent_id(0)
, unregistered_count(0)
{
}
UserManager::~UserManager()
{
- for (user_hash::iterator i = clientlist->begin(); i != clientlist->end(); ++i)
+ for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); ++i)
{
delete i->second;
}
-
- delete clientlist;
- delete uuidlist;
}
-/* add a client connection to the sockets list */
void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
{
- /* NOTE: Calling this one parameter constructor for User automatically
- * allocates a new UUID and places it in the hash_map.
- */
- LocalUser* New = NULL;
- try
- {
- New = new LocalUser(socket, client, server);
- }
- catch (...)
- {
- ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "*** WTF *** Duplicated UUID! -- Crack smoking monkeys have been unleashed.");
- ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!");
- return;
- }
+ // User constructor allocates a new UUID for the user and inserts it into the uuidlist
+ LocalUser* const New = new LocalUser(socket, client, server);
UserIOHandler* eh = &New->eh;
- // If this listener has an IO hook provider set then tell it about the connection
- if (via->iohookprov)
- via->iohookprov->OnAccept(eh, client, server);
-
ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New user fd: %d", socket);
this->unregistered_count++;
+ this->clientlist[New->nick] = New;
+ this->AddClone(New);
+ this->local_users.push_front(New);
+ FOREACH_MOD(OnUserInit, (New));
- /* The users default nick is their UUID */
- New->nick = New->uuid;
- (*(this->clientlist))[New->nick] = New;
+ if (!SocketEngine::AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
+ {
+ ServerInstance->Logs->Log("USERS", LOG_DEBUG, "Internal error on new connection");
+ this->QuitUser(New, "Internal error handling connection");
+ return;
+ }
- New->registered = REG_NONE;
- New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
- New->lastping = 1;
+ // If this listener has an IO hook provider set then tell it about the connection
+ for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i)
+ {
+ ListenSocket::IOHookProvRef& iohookprovref = *i;
+ if (!iohookprovref)
+ {
+ if (!iohookprovref.GetProvider().empty())
+ {
+ ServerInstance->Logs->Log("USERS", LOG_DEBUG, "Non-existent I/O hook '%s' in <bind:%s> tag at %s",
+ iohookprovref.GetProvider().c_str(),
+ i == via->iohookprovs.begin() ? "hook" : "sslprofile",
+ via->bind_tag->getTagLocation().c_str());
+ this->QuitUser(New, "Internal error handling connection");
+ return;
+ }
+ continue;
+ }
- ServerInstance->Users->AddLocalClone(New);
- ServerInstance->Users->AddGlobalClone(New);
+ iohookprovref->OnAccept(eh, client, server);
- this->local_users.push_front(New);
+ // IOHook could have encountered a fatal error, e.g. if the TLS ClientHello
+ // was already in the queue and there was no common TLS version.
+ if (!eh->getError().empty())
+ {
+ QuitUser(New, eh->getError());
+ return;
+ }
+ }
- if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
+ if (this->local_users.size() > ServerInstance->Config->SoftLimit)
{
ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
this->QuitUser(New,"No more connections allowed");
return;
}
- /*
- * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
- * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
- */
+ // First class check. We do this again in LocalUser::FullConnect() after DNS is done, and NICK/USER is received.
New->SetClass();
-
- /*
- * Check connect class settings and initialise settings into User.
- * This will be done again after DNS resolution. -- w00t
- */
+ // If the user doesn't have an acceptable connect class CheckClass() quits them
New->CheckClass(ServerInstance->Config->CCOnConnect);
if (New->quitting)
return;
*/
New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
- if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
+ BanCacheHit* const b = ServerInstance->BanCache.GetHit(New->GetIPString());
+ if (b)
{
if (!b->Type.empty() && !New->exempt)
{
/* user banned */
ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Positive hit for " + New->GetIPString());
if (!ServerInstance->Config->XLineMessage.empty())
- New->WriteNotice("*** " + ServerInstance->Config->XLineMessage);
- this->QuitUser(New, b->Reason);
+ New->WriteNumeric(ERR_YOUREBANNEDCREEP, ServerInstance->Config->XLineMessage);
+
+ if (ServerInstance->Config->HideBans)
+ this->QuitUser(New, b->Type + "-lined", &b->Reason);
+ else
+ this->QuitUser(New, b->Reason);
return;
}
else
}
}
- if (!ServerInstance->SE->AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
- {
- ServerInstance->Logs->Log("USERS", LOG_DEBUG, "Internal error on new connection");
- this->QuitUser(New, "Internal error handling connection");
- }
-
if (ServerInstance->Config->RawLog)
New->WriteNotice("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
FOREACH_MOD(OnSetUserIP, (New));
- if (New->quitting)
- return;
-
- FOREACH_MOD(OnUserInit, (New));
+ if (!New->quitting)
+ FOREACH_MOD(OnUserPostInit, (New));
}
-void UserManager::QuitUser(User* user, const std::string& quitreason, const std::string* operreason)
+void UserManager::QuitUser(User* user, const std::string& quitmessage, const std::string* operquitmessage)
{
if (user->quitting)
{
return;
}
- user->quitting = true;
+ std::string quitmsg(quitmessage);
+ std::string operquitmsg;
+ if (operquitmessage)
+ operquitmsg.assign(*operquitmessage);
+
+ LocalUser* const localuser = IS_LOCAL(user);
+ if (localuser)
+ {
+ ModResult MOD_RESULT;
+ FIRST_MOD_RESULT(OnUserPreQuit, MOD_RESULT, (localuser, quitmsg, operquitmsg));
+ if (MOD_RESULT == MOD_RES_DENY)
+ return;
+ }
+
+ if (quitmsg.length() > ServerInstance->Config->Limits.MaxQuit)
+ quitmsg.erase(ServerInstance->Config->Limits.MaxQuit + 1);
- ServerInstance->Logs->Log("USERS", LOG_DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
- user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), operreason ? operreason->c_str() : quitreason.c_str());
+ if (operquitmsg.empty())
+ operquitmsg.assign(quitmsg);
+ else if (operquitmsg.length() > ServerInstance->Config->Limits.MaxQuit)
+ operquitmsg.erase(ServerInstance->Config->Limits.MaxQuit + 1);
- std::string reason;
- reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
- if (!operreason)
- operreason = &reason;
+ user->quitting = true;
+ ServerInstance->Logs->Log("USERS", LOG_DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitmessage.c_str());
+ if (localuser)
+ {
+ ClientProtocol::Messages::Error errormsg(InspIRCd::Format("Closing link: (%s@%s) [%s]", user->ident.c_str(), user->GetRealHost().c_str(), operquitmsg.c_str()));
+ localuser->Send(ServerInstance->GetRFCEvents().error, errormsg);
+ }
ServerInstance->GlobalCulls.AddItem(user);
if (user->registered == REG_ALL)
{
- FOREACH_MOD(OnUserQuit, (user, reason, *operreason));
- user->WriteCommonQuit(reason, *operreason);
+ FOREACH_MOD(OnUserQuit, (user, quitmsg, operquitmsg));
+ WriteCommonQuit(user, quitmsg, operquitmsg);
}
else
unregistered_count--;
lu->eh.Close();
if (lu->registered == REG_ALL)
- ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s (%s) [%s]", user->GetFullRealHost().c_str(), user->GetIPString().c_str(), operreason->c_str());
+ ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s (%s) [%s]", user->GetFullRealHost().c_str(), user->GetIPString().c_str(), operquitmsg.c_str());
+ local_users.erase(lu);
}
- user_hash::iterator iter = this->clientlist->find(user->nick);
-
- if (iter != this->clientlist->end())
- this->clientlist->erase(iter);
- else
+ if (!clientlist.erase(user->nick))
ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Nick not found in clientlist, cannot remove: " + user->nick);
- uuidlist->erase(user->uuid);
+ uuidlist.erase(user->uuid);
user->PurgeEmptyChannels();
+ user->UnOper();
}
-void UserManager::AddLocalClone(User *user)
-{
- local_clones[user->GetCIDRMask()]++;
-}
-
-void UserManager::AddGlobalClone(User *user)
+void UserManager::AddClone(User* user)
{
- global_clones[user->GetCIDRMask()]++;
+ CloneCounts& counts = clonemap[user->GetCIDRMask()];
+ counts.global++;
+ if (IS_LOCAL(user))
+ counts.local++;
}
void UserManager::RemoveCloneCounts(User *user)
{
- if (IS_LOCAL(user))
+ CloneMap::iterator it = clonemap.find(user->GetCIDRMask());
+ if (it != clonemap.end())
{
- clonemap::iterator x = local_clones.find(user->GetCIDRMask());
- if (x != local_clones.end())
+ CloneCounts& counts = it->second;
+ counts.global--;
+ if (counts.global == 0)
{
- x->second--;
- if (!x->second)
- {
- local_clones.erase(x);
- }
+ // No more users from this IP, remove entry from the map
+ clonemap.erase(it);
+ return;
}
- }
- clonemap::iterator y = global_clones.find(user->GetCIDRMask());
- if (y != global_clones.end())
- {
- y->second--;
- if (!y->second)
- {
- global_clones.erase(y);
- }
+ if (IS_LOCAL(user))
+ counts.local--;
}
}
-unsigned long UserManager::GlobalCloneCount(User *user)
+void UserManager::RehashCloneCounts()
{
- clonemap::iterator x = global_clones.find(user->GetCIDRMask());
- if (x != global_clones.end())
- return x->second;
- else
- return 0;
+ clonemap.clear();
+
+ const user_hash& hash = ServerInstance->Users.GetUsers();
+ for (user_hash::const_iterator i = hash.begin(); i != hash.end(); ++i)
+ {
+ User* u = i->second;
+ AddClone(u);
+ }
}
-unsigned long UserManager::LocalCloneCount(User *user)
+const UserManager::CloneCounts& UserManager::GetCloneCounts(User* user) const
{
- clonemap::iterator x = local_clones.find(user->GetCIDRMask());
- if (x != local_clones.end())
- return x->second;
+ CloneMap::const_iterator it = clonemap.find(user->GetCIDRMask());
+ if (it != clonemap.end())
+ return it->second;
else
- return 0;
+ return zeroclonecounts;
}
void UserManager::ServerNoticeAll(const char* text, ...)
{
std::string message;
VAFORMAT(message, text, text);
- message = "NOTICE $" + ServerInstance->Config->ServerName + " :" + message;
-
- for (LocalUserList::const_iterator i = local_users.begin(); i != local_users.end(); i++)
- {
- User* t = *i;
- t->WriteServ(message);
- }
-}
+ ClientProtocol::Messages::Privmsg msg(ClientProtocol::Messages::Privmsg::nocopy, ServerInstance->FakeClient, ServerInstance->Config->GetServerName(), message, MSG_NOTICE);
+ ClientProtocol::Event msgevent(ServerInstance->GetRFCEvents().privmsg, msg);
-void UserManager::GarbageCollect()
-{
- // Reset the already_sent IDs so we don't wrap it around and drop a message
- LocalUser::already_sent_id = 0;
- for (LocalUserList::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
+ for (LocalList::const_iterator i = local_users.begin(); i != local_users.end(); ++i)
{
- (**i).already_sent = 0;
- (**i).RemoveExpiredInvites();
+ LocalUser* user = *i;
+ user->Send(msgevent);
}
}
-/* this returns true when all modules are satisfied that the user should be allowed onto the irc server
- * (until this returns true, a user will block in the waiting state, waiting to connect up to the
- * registration timeout maximum seconds)
- */
-bool UserManager::AllModulesReportReady(LocalUser* user)
-{
- ModResult res;
- FIRST_MOD_RESULT(OnCheckReady, res, (user));
- return (res == MOD_RES_PASSTHRU);
-}
-
/**
* This function is called once a second from the mainloop.
- * It is intended to do background checking on all the user structs, e.g.
- * stuff like ping checks, registration timeouts, etc.
+ * It is intended to do background checking on all the users, e.g. do
+ * ping checks, registration timeouts, etc.
*/
void UserManager::DoBackgroundUserStuff()
{
- /*
- * loop over all local users..
- */
- for (LocalUserList::iterator i = local_users.begin(); i != local_users.end(); ++i)
+ for (LocalList::iterator i = local_users.begin(); i != local_users.end(); )
{
+ // It's possible that we quit the user below due to ping timeout etc. and QuitUser() removes it from the list
LocalUser* curr = *i;
-
- if (curr->quitting)
- continue;
+ ++i;
if (curr->CommandFloodPenalty || curr->eh.getSendQSize())
{
switch (curr->registered)
{
case REG_ALL:
- if (ServerInstance->Time() > curr->nping)
- {
- // This user didn't answer the last ping, remove them
- if (!curr->lastping)
- {
- time_t time = ServerInstance->Time() - (curr->nping - curr->MyClass->GetPingTime());
- const std::string message = "Ping timeout: " + ConvToStr(time) + (time == 1 ? " seconds" : " second");
- this->QuitUser(curr, message);
- continue;
- }
-
- curr->Write("PING :" + ServerInstance->Config->ServerName);
- curr->lastping = 0;
- curr->nping = ServerInstance->Time() + curr->MyClass->GetPingTime();
- }
+ CheckPingTimeout(curr);
break;
+
case REG_NICKUSER:
- if (AllModulesReportReady(curr))
- {
- /* User has sent NICK/USER, modules are okay, DNS finished. */
- curr->FullConnect();
- continue;
- }
+ CheckModulesReady(curr);
+ break;
+
+ default:
+ CheckRegistrationTimeout(curr);
break;
}
+ }
+}
- if (curr->registered != REG_ALL && (ServerInstance->Time() > (curr->age + curr->MyClass->GetRegTimeout())))
+already_sent_t UserManager::NextAlreadySentId()
+{
+ if (++already_sent_id == 0)
+ {
+ // Wrapped around, reset the already_sent ids of all users
+ already_sent_id = 1;
+ for (LocalList::iterator i = local_users.begin(); i != local_users.end(); ++i)
{
- /*
- * registration timeout -- didnt send USER/NICK/HOST
- * in the time specified in their connection class.
- */
- this->QuitUser(curr, "Registration timeout");
- continue;
+ LocalUser* user = *i;
+ user->already_sent = 0;
}
}
+ return already_sent_id;
}
projects / user / henk / code / inspircd.git / blobdiff