1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
16 #include "socketengine.h"
19 #include "commands/cmd_whowas.h"
21 typedef unsigned int uniq_id_t;
29 array = new uniq_id_t[ServerInstance->SE->GetMaxFds()];
30 memset(array, 0, ServerInstance->SE->GetMaxFds() * sizeof(uniq_id_t));
34 sent() : uniq_id(static_cast<uniq_id_t>(-1)), array(NULL) {}
35 inline uniq_id_t operator++()
41 inline uniq_id_t& operator[](int i)
51 static sent already_sent;
53 std::string User::ProcessNoticeMasks(const char *sm)
55 bool adding = true, oldadding = false;
70 for (unsigned char d = 'A'; d <= 'z'; d++)
72 if (ServerInstance->SNO->IsEnabled(d))
74 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
76 if ((oldadding != adding) || (!output.length()))
77 output += (adding ? '+' : '-');
79 this->SetNoticeMask(d, adding);
88 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
90 if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
92 if ((oldadding != adding) || (!output.length()))
93 output += (adding ? '+' : '-');
95 this->SetNoticeMask(*c, adding);
101 this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
110 std::string s = this->FormatNoticeMasks();
113 this->modes[UM_SNOMASK] = false;
119 void User::StartDNSLookup()
124 const char* sip = this->GetIPString();
125 UserResolver *res_reverse;
127 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
128 res_reverse = new UserResolver(this, sip, resolvtype, cached);
130 ServerInstance->AddResolver(res_reverse, cached);
132 catch (CoreException& e)
134 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
138 bool User::IsNoticeMaskSet(unsigned char sm)
142 return (snomasks[sm-65]);
145 void User::SetNoticeMask(unsigned char sm, bool value)
149 snomasks[sm-65] = value;
152 const char* User::FormatNoticeMasks()
154 static char data[MAXBUF];
157 for (int n = 0; n < 64; n++)
160 data[offset++] = n+65;
167 bool User::IsModeSet(unsigned char m)
171 return (modes[m-65]);
174 void User::SetMode(unsigned char m, bool value)
181 const char* User::FormatModes(bool showparameters)
183 static char data[MAXBUF];
187 for (unsigned char n = 0; n < 64; n++)
191 data[offset++] = n + 65;
192 ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
193 if (showparameters && mh && mh->GetNumParams(true))
195 std::string p = mh->GetUserParameter(this);
197 params.append(" ").append(p);
202 strlcat(data, params.c_str(), MAXBUF);
206 void User::DecrementModes()
208 ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
209 for (unsigned char n = 'A'; n <= 'z'; n++)
213 ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
214 ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
217 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
224 User::User(const std::string &uid)
226 server = ServerInstance->Config->ServerName;
227 age = ServerInstance->Time();
229 lastping = signon = idle_lastmsg = nping = registered = 0;
230 bytes_in = bytes_out = cmds_in = cmds_out = 0;
231 quietquit = quitting = exempt = dns_done = false;
233 server_sa.sa.sa_family = AF_UNSPEC;
234 client_sa.sa.sa_family = AF_UNSPEC;
235 AllowedPrivs = AllowedOperCommands = NULL;
238 uuid = ServerInstance->GetUID();
242 ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid.c_str(), uid.empty() ? "allocated new" : "used remote");
244 user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
245 if (finduuid == ServerInstance->Users->uuidlist->end())
246 (*ServerInstance->Users->uuidlist)[uuid] = this;
248 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
254 ServerInstance->Logs->Log("USERS", ERROR, "User destructor for %s called without cull", uuid.c_str());
257 const std::string& User::MakeHost()
259 if (!this->cached_makehost.empty())
260 return this->cached_makehost;
263 /* This is much faster than snprintf */
265 for(const char* n = ident.c_str(); *n; n++)
268 for(const char* n = host.c_str(); *n; n++)
272 this->cached_makehost.assign(nhost);
274 return this->cached_makehost;
277 const std::string& User::MakeHostIP()
279 if (!this->cached_hostip.empty())
280 return this->cached_hostip;
283 /* This is much faster than snprintf */
285 for(const char* n = ident.c_str(); *n; n++)
288 for(const char* n = this->GetIPString(); *n; n++)
292 this->cached_hostip = ihost;
294 return this->cached_hostip;
297 const std::string User::GetFullHost()
299 if (!this->cached_fullhost.empty())
300 return this->cached_fullhost;
304 for(const char* n = nick.c_str(); *n; n++)
307 for(const char* n = ident.c_str(); *n; n++)
310 for(const char* n = dhost.c_str(); *n; n++)
314 this->cached_fullhost = result;
316 return this->cached_fullhost;
319 char* User::MakeWildHost()
321 static char nresult[MAXBUF];
323 *t++ = '*'; *t++ = '!';
324 *t++ = '*'; *t++ = '@';
325 for(const char* n = dhost.c_str(); *n; n++)
331 const std::string User::GetFullRealHost()
333 if (!this->cached_fullrealhost.empty())
334 return this->cached_fullrealhost;
336 char fresult[MAXBUF];
338 for(const char* n = nick.c_str(); *n; n++)
341 for(const char* n = ident.c_str(); *n; n++)
344 for(const char* n = host.c_str(); *n; n++)
348 this->cached_fullrealhost = fresult;
350 return this->cached_fullrealhost;
353 bool User::IsInvited(const irc::string &channel)
355 time_t now = ServerInstance->Time();
356 InvitedList::iterator safei;
357 for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
359 if (channel == i->first)
361 if (i->second != 0 && now > i->second)
363 /* Expired invite, remove it. */
366 invites.erase(safei);
375 InvitedList* User::GetInviteList()
377 time_t now = ServerInstance->Time();
378 /* Weed out expired invites here. */
379 InvitedList::iterator safei;
380 for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
382 if (i->second != 0 && now > i->second)
384 /* Expired invite, remove it. */
387 invites.erase(safei);
393 void User::InviteTo(const irc::string &channel, time_t invtimeout)
395 time_t now = ServerInstance->Time();
396 if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
397 for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
399 if (channel == i->first)
401 if (i->second != 0 && invtimeout > i->second)
403 i->second = invtimeout;
409 invites.push_back(std::make_pair(channel, invtimeout));
412 void User::RemoveInvite(const irc::string &channel)
414 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
416 if (channel == i->first)
424 bool User::HasModePermission(unsigned char mode, ModeType type)
432 if (mode < 'A' || mode > ('A' + 64)) return false;
434 return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
438 bool User::HasPermission(const std::string &command)
441 * users on remote servers can completely bypass all permissions based checks.
442 * This prevents desyncs when one server has different type/class tags to another.
443 * That having been said, this does open things up to the possibility of source changes
444 * allowing remote kills, etc - but if they have access to the src, they most likely have
445 * access to the conf - so it's an end to a means either way.
450 // are they even an oper at all?
456 if (!AllowedOperCommands)
459 if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
461 else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
468 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
472 ServerInstance->Logs->Log("PRIVS", DEBUG, "Remote (yes)");
479 this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
486 this->WriteServ("NOTICE %s :Privset empty(!?)", this->nick.c_str());
490 if (AllowedPrivs->find(privstr) != AllowedPrivs->end())
494 else if (AllowedPrivs->find("*") != AllowedPrivs->end())
500 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), this->oper.c_str(), privstr.c_str());
504 void User::OnDataReady()
509 if (MyClass && recvq.length() > MyClass->GetRecvqMax() && !HasPrivPermission("users/flood/increased-buffers"))
511 ServerInstance->Users->QuitUser(this, "RecvQ exceeded");
512 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
513 nick.c_str(), (unsigned long)recvq.length(), MyClass->GetRecvqMax());
515 unsigned long sendqmax = ULONG_MAX;
516 if (MyClass && !HasPrivPermission("users/flood/increased-buffers"))
517 sendqmax = MyClass->GetSendqSoftMax();
519 while (Penalty < 10 && getSendQSize() < sendqmax)
522 line.reserve(MAXBUF);
523 std::string::size_type qpos = 0;
524 while (qpos < recvq.length())
526 char c = recvq[qpos++];
537 if (line.length() < MAXBUF - 2)
540 // if we got here, the recvq ran out before we found a newline
543 // just found a newline. Terminate the string, and pull it out of recvq
544 recvq = recvq.substr(qpos);
546 // TODO should this be moved to when it was inserted in recvq?
547 ServerInstance->stats->statsRecv += qpos;
548 this->bytes_in += qpos;
551 ServerInstance->Parser->ProcessBuffer(line, this);
553 // Add pseudo-penalty so that we continue processing after sendq recedes
554 if (Penalty == 0 && getSendQSize() >= sendqmax)
558 void User::AddWriteBuf(const std::string &data)
560 // Don't bother sending text to remote users!
563 if (!quitting && MyClass && getSendQSize() + data.length() > MyClass->GetSendqHardMax() && !HasPrivPermission("users/flood/increased-buffers"))
566 * Quit the user FIRST, because otherwise we could recurse
567 * here and hit the same limit.
569 ServerInstance->Users->QuitUser(this, "SendQ exceeded");
570 ServerInstance->SNO->WriteToSnoMask('a', "User %s SendQ exceeds connect class maximum of %lu",
571 nick.c_str(), MyClass->GetSendqHardMax());
575 // We still want to append data to the sendq of a quitting user,
576 // e.g. their ERROR message that says 'closing link'
581 void User::OnError(BufferedSocketError)
583 ServerInstance->Users->QuitUser(this, getError());
586 CullResult User::cull()
589 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
592 ServerInstance->Logs->Log("USERS", DEBUG, "User culled twice? UUID empty");
593 return Extensible::cull();
595 PurgeEmptyChannels();
601 std::vector<User*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
602 if (x != ServerInstance->Users->local_users.end())
603 ServerInstance->Users->local_users.erase(x);
605 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
608 if (this->AllowedOperCommands)
610 delete AllowedOperCommands;
611 AllowedOperCommands = NULL;
614 if (this->AllowedPrivs)
620 this->InvalidateCache();
621 this->DecrementModes();
623 if (client_sa.sa.sa_family != AF_UNSPEC)
624 ServerInstance->Users->RemoveCloneCounts(this);
626 ServerInstance->Users->uuidlist->erase(uuid);
628 return Extensible::cull();
631 void User::Oper(const std::string &opertype, const std::string &opername)
633 if (this->IsModeSet('o'))
636 this->modes[UM_OPERATOR] = 1;
637 this->WriteServ("MODE %s :+o", this->nick.c_str());
638 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
640 ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), irc::Spacify(opertype.c_str()), opername.c_str());
641 this->WriteNumeric(381, "%s :You are now %s %s", this->nick.c_str(), strchr("aeiouAEIOU", *opertype.c_str()) ? "an" : "a", irc::Spacify(opertype.c_str()));
643 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), opertype.c_str());
644 this->oper.assign(opertype, 0, 512);
645 ServerInstance->Users->all_opers.push_back(this);
648 * This might look like it's in the wrong place.
651 * For multi-network servers, we may not have the opertypes of the remote server, but we still want to mark the user as an oper of that type.
654 TagIndex::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper.c_str());
655 if (iter_opertype != ServerInstance->Config->opertypes.end())
657 if (AllowedOperCommands)
658 AllowedOperCommands->clear();
660 AllowedOperCommands = new std::set<std::string>;
663 AllowedPrivs->clear();
665 AllowedPrivs = new std::set<std::string>;
667 AllowedUserModes.reset();
668 AllowedChanModes.reset();
669 this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
671 std::string myclass, mycmd, mypriv;
672 irc::spacesepstream Classes(iter_opertype->second->getString("classes"));
673 while (Classes.GetToken(myclass))
675 TagIndex::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass.c_str());
676 if (iter_operclass != ServerInstance->Config->operclass.end())
678 /* Process commands */
679 irc::spacesepstream CommandList(iter_operclass->second->getString("commands"));
680 while (CommandList.GetToken(mycmd))
682 this->AllowedOperCommands->insert(mycmd);
685 irc::spacesepstream PrivList(iter_operclass->second->getString("privs"));
686 while (PrivList.GetToken(mypriv))
688 this->AllowedPrivs->insert(mypriv);
691 for (unsigned char* c = (unsigned char*)iter_operclass->second->getString("usermodes").c_str(); *c; ++c)
695 this->AllowedUserModes.set();
699 this->AllowedUserModes[*c - 'A'] = true;
703 for (unsigned char* c = (unsigned char*)iter_operclass->second->getString("chanmodes").c_str(); *c; ++c)
707 this->AllowedChanModes.set();
711 this->AllowedChanModes[*c - 'A'] = true;
718 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
726 * unset their oper type (what IS_OPER checks).
727 * note, order is important - this must come before modes as -o attempts
728 * to call UnOper. -- w00t
733 /* Remove all oper only modes from the user when the deoper - Bug #466*/
734 std::string moderemove("-");
736 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
738 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
739 if (mh && mh->NeedsOper())
740 moderemove += letter;
744 std::vector<std::string> parameters;
745 parameters.push_back(this->nick);
746 parameters.push_back(moderemove);
748 ServerInstance->Parser->CallHandler("MODE", parameters, this);
750 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
751 ServerInstance->Users->all_opers.remove(this);
753 if (AllowedOperCommands)
755 delete AllowedOperCommands;
756 AllowedOperCommands = NULL;
765 AllowedUserModes.reset();
766 AllowedChanModes.reset();
767 this->modes[UM_OPERATOR] = 0;
771 /* adds or updates an entry in the whowas list */
772 void User::AddToWhoWas()
774 Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
777 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
784 * Check class restrictions
786 void User::CheckClass()
788 ConnectClass* a = this->MyClass;
790 if ((!a) || (a->type == CC_DENY))
792 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
795 else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
797 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
798 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
801 else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
803 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
804 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
808 this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
811 bool User::CheckLines(bool doZline)
813 const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
817 for (int n = 0; check[n]; ++n)
819 XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
832 void User::FullConnect()
834 ServerInstance->stats->statsConnects++;
835 this->idle_lastmsg = ServerInstance->Time();
838 * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
839 * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
840 * may put the user into a totally seperate class with different restrictions! so we *must* check again.
841 * Don't remove this! -- w00t
845 /* Check the password, if one is required by the user's connect class.
846 * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
848 if (MyClass && !MyClass->pass.empty())
850 if (ServerInstance->PassCompare(this, MyClass->pass.c_str(), password.c_str(), MyClass->hash.c_str()))
852 ServerInstance->Users->QuitUser(this, "Invalid password");
857 if (this->CheckLines())
860 this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
861 this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str());
862 this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
863 this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
864 this->WriteNumeric(RPL_SERVERVERSION, "%s %s InspIRCd-2.0 %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
866 ServerInstance->Config->Send005(this);
867 this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
873 if (ServerInstance->Users->unregistered_count)
874 ServerInstance->Users->unregistered_count--;
876 /* Trigger LUSERS output, give modules a chance too */
877 ModResult MOD_RESULT;
878 std::string command("LUSERS");
879 std::vector<std::string> parameters;
880 FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, "LUSERS"));
882 ServerInstance->CallCommandHandler(command, parameters, this);
885 * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
886 * for a user that doesn't exist yet.
888 FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
890 this->registered = REG_ALL;
892 FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
894 ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
895 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
896 ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
897 ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
900 /** User::UpdateNick()
901 * re-allocates a nick in the user_hash after they change nicknames,
902 * returns a pointer to the new user as it may have moved
904 User* User::UpdateNickHash(const char* New)
906 //user_hash::iterator newnick;
907 user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
909 if (!irc::string(this->nick.c_str()).compare(New))
910 return oldnick->second;
912 if (oldnick == ServerInstance->Users->clientlist->end())
913 return NULL; /* doesnt exist */
915 User* olduser = oldnick->second;
916 ServerInstance->Users->clientlist->erase(oldnick);
917 (*(ServerInstance->Users->clientlist))[New] = olduser;
921 void User::InvalidateCache()
923 /* Invalidate cache */
924 cached_fullhost.clear();
925 cached_hostip.clear();
926 cached_makehost.clear();
927 cached_fullrealhost.clear();
930 bool User::ForceNickChange(const char* newnick)
932 ModResult MOD_RESULT;
934 this->InvalidateCache();
936 ServerInstance->NICKForced.set(this, 1);
937 FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
938 ServerInstance->NICKForced.set(this, 0);
940 if (MOD_RESULT == MOD_RES_DENY)
942 ServerInstance->stats->statsCollisions++;
946 std::deque<classbase*> dummy;
947 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
948 if (nickhandler) // wtfbbq, when would this not be here
950 std::vector<std::string> parameters;
951 parameters.push_back(newnick);
952 ServerInstance->NICKForced.set(this, 1);
953 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
954 ServerInstance->NICKForced.set(this, 0);
958 // Unreachable, we hope
962 int User::GetServerPort()
964 switch (this->server_sa.sa.sa_family)
967 return htons(this->server_sa.in6.sin6_port);
969 return htons(this->server_sa.in4.sin_port);
974 const char* User::GetCIDRMask(int range)
979 throw "Negative range, sorry, no.";
982 * Original code written by Oliver Lupton (Om).
983 * Integrated by me. Thanks. :) -- w00t
985 switch (this->client_sa.sa.sa_family)
989 /* unsigned char s6_addr[16]; */
991 int i, bytestozero, extrabits;
995 throw "CIDR mask width greater than address width (IPv6, 128 bit)";
997 /* To create the CIDR mask we want to set all the bits after 'range' bits of the address
998 * to zero. This means the last (128 - range) bits of the address must be set to zero.
999 * Hence this number divided by 8 is the number of whole bytes from the end of the address
1000 * which must be set to zero.
1002 bytestozero = (128 - range) / 8;
1004 /* Some of the least significant bits of the next most significant byte may also have to
1005 * be zeroed. The number of bits is the remainder of the above division.
1007 extrabits = (128 - range) % 8;
1009 /* Populate our working struct with the parts of the user's IP which are required in the
1010 * final CIDR mask. Set all the subsequent bytes to zero.
1011 * (16 - bytestozero) is the number of bytes which must be populated with actual IP data.
1013 for(i = 0; i < (16 - bytestozero); i++)
1015 v6.s6_addr[i] = client_sa.in6.sin6_addr.s6_addr[i];
1018 /* And zero all the remaining bytes in the IP. */
1024 /* And finally, zero the extra bits required. */
1025 v6.s6_addr[15 - bytestozero] = (v6.s6_addr[15 - bytestozero] >> extrabits) << extrabits;
1027 snprintf(buf, 44, "%s/%d", inet_ntop(AF_INET6, &v6, buffer, 40), range);
1037 throw "CIDR mask width greater than address width (IPv4, 32 bit)";
1039 /* Users already have a sockaddr* pointer (User::ip) which contains either a v4 or v6 structure */
1040 v4.s_addr = client_sa.in4.sin_addr.s_addr;
1042 /* To create the CIDR mask we want to set all the bits after 'range' bits of the address
1043 * to zero. This means the last (32 - range) bits of the address must be set to zero.
1044 * This is done by shifting the value right and then back left by (32 - range) bits.
1048 v4.s_addr = ntohl(v4.s_addr);
1049 v4.s_addr = (v4.s_addr >> (32 - range)) << (32 - range);
1050 v4.s_addr = htonl(v4.s_addr);
1054 /* a range of zero would cause a 32 bit value to be shifted by 32 bits.
1055 * this has undefined behaviour, but for CIDR purposes the resulting mask
1056 * from a.b.c.d/0 is 0.0.0.0/0
1061 snprintf(buf, 44, "%s/%d", inet_ntop(AF_INET, &v4, buffer, 16), range);
1067 return ""; // unused, but oh well
1070 const char* User::GetIPString()
1073 if (cachedip.empty())
1075 irc::sockets::satoap(&client_sa, cachedip, port);
1076 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1077 if (cachedip.c_str()[0] == ':')
1078 cachedip.insert(0,1,'0');
1081 return cachedip.c_str();
1084 bool User::SetClientIP(const char* sip)
1086 this->cachedip = "";
1087 return irc::sockets::aptosa(sip, 0, &client_sa);
1090 static std::string wide_newline("\r\n");
1092 void User::Write(const std::string& text)
1094 if (!ServerInstance->SE->BoundsCheckFd(this))
1097 if (text.length() > MAXBUF - 2)
1099 // this should happen rarely or never. Crop the string at 512 and try again.
1100 std::string try_again = text.substr(0, MAXBUF - 2);
1105 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1107 this->AddWriteBuf(text);
1108 this->AddWriteBuf(wide_newline);
1110 ServerInstance->stats->statsSent += text.length() + 2;
1111 this->bytes_out += text.length() + 2;
1117 void User::Write(const char *text, ...)
1120 char textbuffer[MAXBUF];
1122 va_start(argsPtr, text);
1123 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1126 this->Write(std::string(textbuffer));
1129 void User::WriteServ(const std::string& text)
1131 this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1135 * Same as Write(), except `text' is prefixed with `:server.name '.
1137 void User::WriteServ(const char* text, ...)
1140 char textbuffer[MAXBUF];
1142 va_start(argsPtr, text);
1143 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1146 this->WriteServ(std::string(textbuffer));
1150 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1153 char textbuffer[MAXBUF];
1155 va_start(argsPtr, text);
1156 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1159 this->WriteNumeric(numeric, std::string(textbuffer));
1162 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1164 char textbuffer[MAXBUF];
1165 ModResult MOD_RESULT;
1167 FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1169 if (MOD_RESULT == MOD_RES_DENY)
1172 snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1173 this->Write(std::string(textbuffer));
1176 void User::WriteFrom(User *user, const std::string &text)
1180 snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1182 this->Write(std::string(tb));
1186 /* write text from an originating user to originating user */
1188 void User::WriteFrom(User *user, const char* text, ...)
1191 char textbuffer[MAXBUF];
1193 va_start(argsPtr, text);
1194 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1197 this->WriteFrom(user, std::string(textbuffer));
1201 /* write text to an destination user from a source user (e.g. user privmsg) */
1203 void User::WriteTo(User *dest, const char *data, ...)
1205 char textbuffer[MAXBUF];
1208 va_start(argsPtr, data);
1209 vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1212 this->WriteTo(dest, std::string(textbuffer));
1215 void User::WriteTo(User *dest, const std::string &data)
1217 dest->WriteFrom(this, data);
1220 void User::WriteCommon(const char* text, ...)
1222 char textbuffer[MAXBUF];
1225 if (this->registered != REG_ALL || quitting)
1228 int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1230 va_start(argsPtr, text);
1231 vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1234 this->WriteCommonRaw(std::string(textbuffer), true);
1237 void User::WriteCommonExcept(const char* text, ...)
1239 char textbuffer[MAXBUF];
1242 if (this->registered != REG_ALL || quitting)
1245 int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1247 va_start(argsPtr, text);
1248 vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1251 this->WriteCommonRaw(std::string(textbuffer), false);
1254 void User::WriteCommonRaw(const std::string &line, bool include_self)
1256 if (this->registered != REG_ALL || quitting)
1259 uniq_id_t uniq_id = ++already_sent;
1261 UserChanList include_c(chans);
1262 std::map<User*,bool> exceptions;
1264 exceptions[this] = include_self;
1266 FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1268 for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1271 if (IS_LOCAL(u) && !u->quitting)
1273 already_sent[u->fd] = uniq_id;
1278 for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1281 const UserMembList* ulist = c->GetUsers();
1282 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1285 if (IS_LOCAL(u) && !u->quitting && already_sent[u->fd] != uniq_id)
1287 already_sent[u->fd] = uniq_id;
1294 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1299 if (this->registered != REG_ALL)
1302 uniq_id_t uniq_id = ++already_sent;
1304 snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1305 snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1306 std::string out1 = tb1;
1307 std::string out2 = tb2;
1309 UserChanList include_c(chans);
1310 std::map<User*,bool> exceptions;
1312 FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1314 for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1317 if (IS_LOCAL(u) && !u->quitting)
1319 already_sent[u->fd] = uniq_id;
1321 u->Write(IS_OPER(u) ? out2 : out1);
1324 for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1326 const UserMembList* ulist = (*v)->GetUsers();
1327 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1330 if (IS_LOCAL(u) && !u->quitting && (already_sent[u->fd] != uniq_id))
1332 already_sent[u->fd] = uniq_id;
1333 u->Write(IS_OPER(u) ? out2 : out1);
1339 void User::WriteWallOps(const std::string &text)
1341 std::string wallop("WALLOPS :");
1342 wallop.append(text);
1344 for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1347 if (t->IsModeSet('w'))
1348 this->WriteTo(t,wallop);
1352 void User::WriteWallOps(const char* text, ...)
1354 if (!IS_LOCAL(this))
1357 char textbuffer[MAXBUF];
1360 va_start(argsPtr, text);
1361 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1364 this->WriteWallOps(std::string(textbuffer));
1367 /* return 0 or 1 depending if users u and u2 share one or more common channels
1368 * (used by QUIT, NICK etc which arent channel specific notices)
1370 * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1371 * the first users channels then the second users channels within the outer loop,
1372 * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1373 * all possible iterations). However this new function instead checks against the
1374 * channel's userlist in the inner loop which is a std::map<User*,User*>
1375 * and saves us time as we already know what pointer value we are after.
1376 * Don't quote me on the maths as i am not a mathematician or computer scientist,
1377 * but i believe this algorithm is now x+(log y) maximum iterations instead.
1379 bool User::SharesChannelWith(User *other)
1381 if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1385 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1387 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1388 * by replacing it with a map::find which *should* be more efficient
1390 if ((*i)->HasUser(other))
1396 bool User::ChangeName(const char* gecos)
1398 if (!this->fullname.compare(gecos))
1403 ModResult MOD_RESULT;
1404 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (this,gecos));
1405 if (MOD_RESULT == MOD_RES_DENY)
1407 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1409 this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1414 void User::DoHostCycle(const std::string &quitline)
1416 char buffer[MAXBUF];
1418 if (!ServerInstance->Config->CycleHosts)
1421 uniq_id_t silent_id = ++already_sent;
1422 uniq_id_t seen_id = ++already_sent;
1424 UserChanList include_c(chans);
1425 std::map<User*,bool> exceptions;
1427 FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1429 for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1432 if (IS_LOCAL(u) && !u->quitting)
1436 already_sent[u->fd] = seen_id;
1441 already_sent[u->fd] = silent_id;
1445 for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1448 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1449 std::string joinline(buffer);
1450 std::string modeline = ServerInstance->Modes->ModeString(this, c);
1451 if (modeline.length() > 0)
1453 snprintf(buffer, MAXBUF, ":%s MODE %s +%s", GetFullHost().c_str(), c->name.c_str(), modeline.c_str());
1457 const UserMembList *ulist = c->GetUsers();
1458 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1461 if (u == this || !IS_LOCAL(u))
1463 if (already_sent[u->fd] == silent_id)
1466 if (already_sent[u->fd] != seen_id)
1469 already_sent[i->first->fd] = seen_id;
1472 if (modeline.length() > 0)
1478 bool User::ChangeDisplayedHost(const char* shost)
1485 ModResult MOD_RESULT;
1486 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (this,shost));
1487 if (MOD_RESULT == MOD_RES_DENY)
1491 FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1493 std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1495 /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1496 this->dhost.assign(shost, 0, 64);
1498 this->InvalidateCache();
1500 this->DoHostCycle(quitstr);
1503 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1508 bool User::ChangeIdent(const char* newident)
1510 if (this->ident == newident)
1513 FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1515 std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1517 this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1519 this->InvalidateCache();
1521 this->DoHostCycle(quitstr);
1526 void User::SendAll(const char* command, const char* text, ...)
1528 char textbuffer[MAXBUF];
1529 char formatbuffer[MAXBUF];
1532 va_start(argsPtr, text);
1533 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1536 snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1537 std::string fmt = formatbuffer;
1539 for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1546 std::string User::ChannelList(User* source, bool spy)
1550 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1553 /* If the target is the sender, neither +p nor +s is set, or
1554 * the channel contains the user, it is not a spy channel
1556 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1557 list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1563 void User::SplitChanList(User* dest, const std::string &cl)
1566 std::ostringstream prefix;
1567 std::string::size_type start, pos, length;
1569 prefix << this->nick << " " << dest->nick << " :";
1570 line = prefix.str();
1571 int namelen = ServerInstance->Config->ServerName.length() + 6;
1573 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1575 length = (pos == std::string::npos) ? cl.length() : pos;
1577 if (line.length() + namelen + length - start > 510)
1579 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1580 line = prefix.str();
1583 if(pos == std::string::npos)
1585 line.append(cl.substr(start, length - start));
1590 line.append(cl.substr(start, length - start + 1));
1596 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1601 * Sets a user's connection class.
1602 * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1603 * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1604 * then their ip will be taken as 'priority' anyway, so for example,
1605 * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1607 ConnectClass* User::SetClass(const std::string &explicit_name)
1609 ConnectClass *found = NULL;
1611 if (!IS_LOCAL(this))
1614 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1616 if (!explicit_name.empty())
1618 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1620 ConnectClass* c = *i;
1622 if (explicit_name == c->name)
1624 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1631 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1633 ConnectClass* c = *i;
1635 if (c->type == CC_ALLOW)
1637 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->host.c_str(), c->GetPort(), c->GetName().c_str());
1641 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1644 /* check if host matches.. */
1645 if (c->GetHost().length() && !InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1646 !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1648 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1653 * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1654 * because we should attempt to find another class if this one doesn't match us. -- w00t
1656 if (c->limit && (c->GetReferenceCount() >= c->limit))
1658 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1662 /* if it requires a port ... */
1665 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1667 /* and our port doesn't match, fail. */
1668 if (this->GetServerPort() != c->GetPort())
1670 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetServerPort());
1675 /* we stop at the first class that meets ALL critera. */
1682 * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1689 return this->MyClass;
1692 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1693 * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1694 * then their ip will be taken as 'priority' anyway, so for example,
1695 * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1697 ConnectClass* User::GetClass()
1699 return this->MyClass;
1702 void User::PurgeEmptyChannels()
1704 std::vector<Channel*> to_delete;
1706 // firstly decrement the count on each channel
1707 for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1710 c->RemoveAllPrefixes(this);
1717 void User::ShowMOTD()
1719 if (!ServerInstance->Config->MOTD.size())
1721 this->WriteNumeric(ERR_NOMOTD, "%s :Message of the day file is missing.",this->nick.c_str());
1724 this->WriteNumeric(RPL_MOTDSTART, "%s :%s message of the day", this->nick.c_str(), ServerInstance->Config->ServerName.c_str());
1726 for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1727 this->WriteNumeric(RPL_MOTD, "%s :- %s",this->nick.c_str(),i->c_str());
1729 this->WriteNumeric(RPL_ENDOFMOTD, "%s :End of message of the day.", this->nick.c_str());
1732 void User::ShowRULES()
1734 if (!ServerInstance->Config->RULES.size())
1736 this->WriteNumeric(ERR_NORULES, "%s :RULES File is missing",this->nick.c_str());
1740 this->WriteNumeric(RPL_RULESTART, "%s :- %s Server Rules -",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
1742 for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1743 this->WriteNumeric(RPL_RULES, "%s :- %s",this->nick.c_str(),i->c_str());
1745 this->WriteNumeric(RPL_RULESEND, "%s :End of RULES command.",this->nick.c_str());
1748 void User::IncreasePenalty(int increase)
1750 this->Penalty += increase;
1753 void User::DecreasePenalty(int decrease)
1755 this->Penalty -= decrease;
1758 void FakeUser::SetFakeServer(std::string name)
1761 this->server = name;
1764 const std::string FakeUser::GetFullHost()
1766 if (!ServerInstance->Config->HideWhoisServer.empty())
1767 return ServerInstance->Config->HideWhoisServer;
1771 const std::string FakeUser::GetFullRealHost()
1773 if (!ServerInstance->Config->HideWhoisServer.empty())
1774 return ServerInstance->Config->HideWhoisServer;
1778 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1779 : config(tag), type(t), name("unnamed"), registration_timeout(0), host(mask),
1780 pingtime(0), pass(""), hash(""), softsendqmax(0), hardsendqmax(0),
1781 recvqmax(0), penaltythreshold(0), maxlocal(0), maxglobal(0), maxchans(0), port(0), limit(0)
1785 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1786 : config(tag), type(t), name("unnamed"),
1787 registration_timeout(parent.registration_timeout), host(mask),
1788 pingtime(parent.pingtime), pass(parent.pass), hash(parent.hash),
1789 softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax),
1790 recvqmax(parent.recvqmax), penaltythreshold(parent.penaltythreshold), maxlocal(parent.maxlocal),
1791 maxglobal(parent.maxglobal), maxchans(parent.maxchans),
1792 port(parent.port), limit(parent.limit)
1796 void ConnectClass::Update(const ConnectClass* src)
1799 registration_timeout = src->registration_timeout;
1801 pingtime = src->pingtime;
1804 softsendqmax = src->softsendqmax;
1805 hardsendqmax = src->hardsendqmax;
1806 recvqmax = src->recvqmax;
1807 penaltythreshold = src->penaltythreshold;
1808 maxlocal = src->maxlocal;
1809 maxglobal = src->maxglobal;