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 = haspassed = dns_done = false;
233 server_sa.sa.sa_family = AF_UNSPEC;
234 client_sa.sa.sa_family = AF_UNSPEC;
236 AllowedPrivs = AllowedOperCommands = NULL;
239 uuid.assign(ServerInstance->GetUID(), 0, UUID_LENGTH - 1);
241 uuid.assign(uid, 0, UUID_LENGTH - 1);
243 ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid.c_str(), uid.empty() ? "allocated new" : "used remote");
245 user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
246 if (finduuid == ServerInstance->Users->uuidlist->end())
247 (*ServerInstance->Users->uuidlist)[uuid] = this;
249 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
255 ServerInstance->Logs->Log("USERS", ERROR, "User destructor for %s called without cull", uuid.c_str());
258 const std::string& User::MakeHost()
260 if (!this->cached_makehost.empty())
261 return this->cached_makehost;
264 /* This is much faster than snprintf */
266 for(const char* n = ident.c_str(); *n; n++)
269 for(const char* n = host.c_str(); *n; n++)
273 this->cached_makehost.assign(nhost);
275 return this->cached_makehost;
278 const std::string& User::MakeHostIP()
280 if (!this->cached_hostip.empty())
281 return this->cached_hostip;
284 /* This is much faster than snprintf */
286 for(const char* n = ident.c_str(); *n; n++)
289 for(const char* n = this->GetIPString(); *n; n++)
293 this->cached_hostip = ihost;
295 return this->cached_hostip;
298 const std::string User::GetFullHost()
300 if (!this->cached_fullhost.empty())
301 return this->cached_fullhost;
305 for(const char* n = nick.c_str(); *n; n++)
308 for(const char* n = ident.c_str(); *n; n++)
311 for(const char* n = dhost.c_str(); *n; n++)
315 this->cached_fullhost = result;
317 return this->cached_fullhost;
320 char* User::MakeWildHost()
322 static char nresult[MAXBUF];
324 *t++ = '*'; *t++ = '!';
325 *t++ = '*'; *t++ = '@';
326 for(const char* n = dhost.c_str(); *n; n++)
332 const std::string User::GetFullRealHost()
334 if (!this->cached_fullrealhost.empty())
335 return this->cached_fullrealhost;
337 char fresult[MAXBUF];
339 for(const char* n = nick.c_str(); *n; n++)
342 for(const char* n = ident.c_str(); *n; n++)
345 for(const char* n = host.c_str(); *n; n++)
349 this->cached_fullrealhost = fresult;
351 return this->cached_fullrealhost;
354 bool User::IsInvited(const irc::string &channel)
356 time_t now = ServerInstance->Time();
357 InvitedList::iterator safei;
358 for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
360 if (channel == i->first)
362 if (i->second != 0 && now > i->second)
364 /* Expired invite, remove it. */
367 invites.erase(safei);
376 InvitedList* User::GetInviteList()
378 time_t now = ServerInstance->Time();
379 /* Weed out expired invites here. */
380 InvitedList::iterator safei;
381 for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
383 if (i->second != 0 && now > i->second)
385 /* Expired invite, remove it. */
388 invites.erase(safei);
394 void User::InviteTo(const irc::string &channel, time_t invtimeout)
396 time_t now = ServerInstance->Time();
397 if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
398 for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
400 if (channel == i->first)
402 if (i->second != 0 && invtimeout > i->second)
404 i->second = invtimeout;
410 invites.push_back(std::make_pair(channel, invtimeout));
413 void User::RemoveInvite(const irc::string &channel)
415 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
417 if (channel == i->first)
425 bool User::HasModePermission(unsigned char mode, ModeType type)
433 if (mode < 'A' || mode > ('A' + 64)) return false;
435 return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
439 bool User::HasPermission(const std::string &command)
442 * users on remote servers can completely bypass all permissions based checks.
443 * This prevents desyncs when one server has different type/class tags to another.
444 * That having been said, this does open things up to the possibility of source changes
445 * allowing remote kills, etc - but if they have access to the src, they most likely have
446 * access to the conf - so it's an end to a means either way.
451 // are they even an oper at all?
457 if (!AllowedOperCommands)
460 if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
462 else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
469 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
473 ServerInstance->Logs->Log("PRIVS", DEBUG, "Remote (yes)");
480 this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
487 this->WriteServ("NOTICE %s :Privset empty(!?)", this->nick.c_str());
491 if (AllowedPrivs->find(privstr) != AllowedPrivs->end())
495 else if (AllowedPrivs->find("*") != AllowedPrivs->end())
501 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());
505 void User::OnDataReady()
510 if (MyClass && recvq.length() > MyClass->GetRecvqMax() && !HasPrivPermission("users/flood/increased-buffers"))
512 ServerInstance->Users->QuitUser(this, "RecvQ exceeded");
513 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
514 nick.c_str(), (unsigned long)recvq.length(), MyClass->GetRecvqMax());
516 unsigned long sendqmax = ULONG_MAX;
517 if (MyClass && !HasPrivPermission("users/flood/increased-buffers"))
518 sendqmax = MyClass->GetSendqSoftMax();
520 while (Penalty < 10 && getSendQSize() < sendqmax)
523 line.reserve(MAXBUF);
524 std::string::size_type qpos = 0;
525 while (qpos < recvq.length())
527 char c = recvq[qpos++];
538 if (line.length() < MAXBUF - 2)
541 // if we got here, the recvq ran out before we found a newline
544 // just found a newline. Terminate the string, and pull it out of recvq
545 recvq = recvq.substr(qpos);
547 // TODO should this be moved to when it was inserted in recvq?
548 ServerInstance->stats->statsRecv += qpos;
549 this->bytes_in += qpos;
552 ServerInstance->Parser->ProcessBuffer(line, this);
554 // Add pseudo-penalty so that we continue processing after sendq recedes
555 if (Penalty == 0 && getSendQSize() >= sendqmax)
559 void User::AddWriteBuf(const std::string &data)
561 // Don't bother sending text to remote users!
564 if (!quitting && MyClass && getSendQSize() + data.length() > MyClass->GetSendqHardMax() && !HasPrivPermission("users/flood/increased-buffers"))
567 * Quit the user FIRST, because otherwise we could recurse
568 * here and hit the same limit.
570 ServerInstance->Users->QuitUser(this, "SendQ exceeded");
571 ServerInstance->SNO->WriteToSnoMask('a', "User %s SendQ exceeds connect class maximum of %lu",
572 nick.c_str(), MyClass->GetSendqHardMax());
576 // We still want to append data to the sendq of a quitting user,
577 // e.g. their ERROR message that says 'closing link'
582 void User::OnError(BufferedSocketError)
584 ServerInstance->Users->QuitUser(this, getError());
590 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
593 ServerInstance->Logs->Log("USERS", DEBUG, "User culled twice? UUID empty");
596 PurgeEmptyChannels();
602 std::vector<User*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
603 if (x != ServerInstance->Users->local_users.end())
604 ServerInstance->Users->local_users.erase(x);
606 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
609 if (this->AllowedOperCommands)
611 delete AllowedOperCommands;
612 AllowedOperCommands = NULL;
615 if (this->AllowedPrivs)
621 this->InvalidateCache();
622 this->DecrementModes();
624 if (client_sa.sa.sa_family != AF_UNSPEC)
625 ServerInstance->Users->RemoveCloneCounts(this);
627 ServerInstance->Users->uuidlist->erase(uuid);
632 void User::Oper(const std::string &opertype, const std::string &opername)
634 if (this->IsModeSet('o'))
637 this->modes[UM_OPERATOR] = 1;
638 this->WriteServ("MODE %s :+o", this->nick.c_str());
639 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
641 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());
642 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()));
644 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());
645 this->oper.assign(opertype, 0, 512);
646 ServerInstance->Users->all_opers.push_back(this);
649 * This might look like it's in the wrong place.
652 * 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.
655 TagIndex::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper.c_str());
656 if (iter_opertype != ServerInstance->Config->opertypes.end())
658 if (AllowedOperCommands)
659 AllowedOperCommands->clear();
661 AllowedOperCommands = new std::set<std::string>;
664 AllowedPrivs->clear();
666 AllowedPrivs = new std::set<std::string>;
668 AllowedUserModes.reset();
669 AllowedChanModes.reset();
670 this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
672 std::string myclass, mycmd, mypriv;
673 irc::spacesepstream Classes(iter_opertype->second->getString("classes"));
674 while (Classes.GetToken(myclass))
676 TagIndex::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass.c_str());
677 if (iter_operclass != ServerInstance->Config->operclass.end())
679 /* Process commands */
680 irc::spacesepstream CommandList(iter_operclass->second->getString("commands"));
681 while (CommandList.GetToken(mycmd))
683 this->AllowedOperCommands->insert(mycmd);
686 irc::spacesepstream PrivList(iter_operclass->second->getString("privs"));
687 while (PrivList.GetToken(mypriv))
689 this->AllowedPrivs->insert(mypriv);
692 for (unsigned char* c = (unsigned char*)iter_operclass->second->getString("usermodes").c_str(); *c; ++c)
696 this->AllowedUserModes.set();
700 this->AllowedUserModes[*c - 'A'] = true;
704 for (unsigned char* c = (unsigned char*)iter_operclass->second->getString("chanmodes").c_str(); *c; ++c)
708 this->AllowedChanModes.set();
712 this->AllowedChanModes[*c - 'A'] = true;
719 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
727 * unset their oper type (what IS_OPER checks).
728 * note, order is important - this must come before modes as -o attempts
729 * to call UnOper. -- w00t
734 /* Remove all oper only modes from the user when the deoper - Bug #466*/
735 std::string moderemove("-");
737 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
739 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
740 if (mh && mh->NeedsOper())
741 moderemove += letter;
745 std::vector<std::string> parameters;
746 parameters.push_back(this->nick);
747 parameters.push_back(moderemove);
749 ServerInstance->Parser->CallHandler("MODE", parameters, this);
751 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
752 ServerInstance->Users->all_opers.remove(this);
754 if (AllowedOperCommands)
756 delete AllowedOperCommands;
757 AllowedOperCommands = NULL;
766 AllowedUserModes.reset();
767 AllowedChanModes.reset();
768 this->modes[UM_OPERATOR] = 0;
772 /* adds or updates an entry in the whowas list */
773 void User::AddToWhoWas()
775 Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
778 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
785 * Check class restrictions
787 void User::CheckClass()
789 ConnectClass* a = this->MyClass;
791 if ((!a) || (a->type == CC_DENY))
793 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
796 else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
798 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
799 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
802 else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
804 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
805 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
809 this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
812 bool User::CheckLines(bool doZline)
814 const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
818 for (int n = 0; check[n]; ++n)
820 XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
833 void User::FullConnect()
835 ServerInstance->stats->statsConnects++;
836 this->idle_lastmsg = ServerInstance->Time();
839 * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
840 * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
841 * may put the user into a totally seperate class with different restrictions! so we *must* check again.
842 * Don't remove this! -- w00t
846 /* Check the password, if one is required by the user's connect class.
847 * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
849 if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
851 ServerInstance->Users->QuitUser(this, "Invalid password");
855 if (this->CheckLines())
858 this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
859 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());
860 this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
861 this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
862 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());
864 ServerInstance->Config->Send005(this);
865 this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
871 if (ServerInstance->Users->unregistered_count)
872 ServerInstance->Users->unregistered_count--;
874 /* Trigger LUSERS output, give modules a chance too */
875 ModResult MOD_RESULT;
876 std::string command("LUSERS");
877 std::vector<std::string> parameters;
878 FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, "LUSERS"));
880 ServerInstance->CallCommandHandler(command, parameters, this);
883 * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
884 * for a user that doesn't exist yet.
886 FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
888 this->registered = REG_ALL;
890 FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
892 ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
893 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
894 ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
895 ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
898 /** User::UpdateNick()
899 * re-allocates a nick in the user_hash after they change nicknames,
900 * returns a pointer to the new user as it may have moved
902 User* User::UpdateNickHash(const char* New)
904 //user_hash::iterator newnick;
905 user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
907 if (!irc::string(this->nick.c_str()).compare(New))
908 return oldnick->second;
910 if (oldnick == ServerInstance->Users->clientlist->end())
911 return NULL; /* doesnt exist */
913 User* olduser = oldnick->second;
914 ServerInstance->Users->clientlist->erase(oldnick);
915 (*(ServerInstance->Users->clientlist))[New] = olduser;
919 void User::InvalidateCache()
921 /* Invalidate cache */
922 cached_fullhost.clear();
923 cached_hostip.clear();
924 cached_makehost.clear();
925 cached_fullrealhost.clear();
928 bool User::ForceNickChange(const char* newnick)
930 ModResult MOD_RESULT;
932 this->InvalidateCache();
934 ServerInstance->NICKForced.set(this, 1);
935 FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
936 ServerInstance->NICKForced.set(this, 0);
938 if (MOD_RESULT == MOD_RES_DENY)
940 ServerInstance->stats->statsCollisions++;
944 std::deque<classbase*> dummy;
945 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
946 if (nickhandler) // wtfbbq, when would this not be here
948 std::vector<std::string> parameters;
949 parameters.push_back(newnick);
950 ServerInstance->NICKForced.set(this, 1);
951 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
952 ServerInstance->NICKForced.set(this, 0);
956 // Unreachable, we hope
960 int User::GetServerPort()
962 switch (this->server_sa.sa.sa_family)
965 return htons(this->server_sa.in6.sin6_port);
967 return htons(this->server_sa.in4.sin_port);
972 const char* User::GetCIDRMask(int range)
977 throw "Negative range, sorry, no.";
980 * Original code written by Oliver Lupton (Om).
981 * Integrated by me. Thanks. :) -- w00t
983 switch (this->client_sa.sa.sa_family)
987 /* unsigned char s6_addr[16]; */
989 int i, bytestozero, extrabits;
993 throw "CIDR mask width greater than address width (IPv6, 128 bit)";
995 /* To create the CIDR mask we want to set all the bits after 'range' bits of the address
996 * to zero. This means the last (128 - range) bits of the address must be set to zero.
997 * Hence this number divided by 8 is the number of whole bytes from the end of the address
998 * which must be set to zero.
1000 bytestozero = (128 - range) / 8;
1002 /* Some of the least significant bits of the next most significant byte may also have to
1003 * be zeroed. The number of bits is the remainder of the above division.
1005 extrabits = (128 - range) % 8;
1007 /* Populate our working struct with the parts of the user's IP which are required in the
1008 * final CIDR mask. Set all the subsequent bytes to zero.
1009 * (16 - bytestozero) is the number of bytes which must be populated with actual IP data.
1011 for(i = 0; i < (16 - bytestozero); i++)
1013 v6.s6_addr[i] = client_sa.in6.sin6_addr.s6_addr[i];
1016 /* And zero all the remaining bytes in the IP. */
1022 /* And finally, zero the extra bits required. */
1023 v6.s6_addr[15 - bytestozero] = (v6.s6_addr[15 - bytestozero] >> extrabits) << extrabits;
1025 snprintf(buf, 44, "%s/%d", inet_ntop(AF_INET6, &v6, buffer, 40), range);
1035 throw "CIDR mask width greater than address width (IPv4, 32 bit)";
1037 /* Users already have a sockaddr* pointer (User::ip) which contains either a v4 or v6 structure */
1038 v4.s_addr = client_sa.in4.sin_addr.s_addr;
1040 /* To create the CIDR mask we want to set all the bits after 'range' bits of the address
1041 * to zero. This means the last (32 - range) bits of the address must be set to zero.
1042 * This is done by shifting the value right and then back left by (32 - range) bits.
1046 v4.s_addr = ntohl(v4.s_addr);
1047 v4.s_addr = (v4.s_addr >> (32 - range)) << (32 - range);
1048 v4.s_addr = htonl(v4.s_addr);
1052 /* a range of zero would cause a 32 bit value to be shifted by 32 bits.
1053 * this has undefined behaviour, but for CIDR purposes the resulting mask
1054 * from a.b.c.d/0 is 0.0.0.0/0
1059 snprintf(buf, 44, "%s/%d", inet_ntop(AF_INET, &v4, buffer, 16), range);
1065 return ""; // unused, but oh well
1068 const char* User::GetIPString()
1071 if (cachedip.empty())
1073 irc::sockets::satoap(&client_sa, cachedip, port);
1074 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1075 if (cachedip.c_str()[0] == ':')
1076 cachedip.insert(0,1,'0');
1079 return cachedip.c_str();
1082 bool User::SetClientIP(const char* sip)
1084 this->cachedip = "";
1085 return irc::sockets::aptosa(sip, 0, &client_sa);
1088 static std::string wide_newline("\r\n");
1090 void User::Write(const std::string& text)
1092 if (!ServerInstance->SE->BoundsCheckFd(this))
1095 if (text.length() > MAXBUF - 2)
1097 // this should happen rarely or never. Crop the string at 512 and try again.
1098 std::string try_again = text.substr(0, MAXBUF - 2);
1103 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1105 this->AddWriteBuf(text);
1106 this->AddWriteBuf(wide_newline);
1108 ServerInstance->stats->statsSent += text.length() + 2;
1109 this->bytes_out += text.length() + 2;
1115 void User::Write(const char *text, ...)
1118 char textbuffer[MAXBUF];
1120 va_start(argsPtr, text);
1121 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1124 this->Write(std::string(textbuffer));
1127 void User::WriteServ(const std::string& text)
1129 this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1133 * Same as Write(), except `text' is prefixed with `:server.name '.
1135 void User::WriteServ(const char* text, ...)
1138 char textbuffer[MAXBUF];
1140 va_start(argsPtr, text);
1141 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1144 this->WriteServ(std::string(textbuffer));
1148 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1151 char textbuffer[MAXBUF];
1153 va_start(argsPtr, text);
1154 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1157 this->WriteNumeric(numeric, std::string(textbuffer));
1160 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1162 char textbuffer[MAXBUF];
1163 ModResult MOD_RESULT;
1165 FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1167 if (MOD_RESULT == MOD_RES_DENY)
1170 snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1171 this->Write(std::string(textbuffer));
1174 void User::WriteFrom(User *user, const std::string &text)
1178 snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1180 this->Write(std::string(tb));
1184 /* write text from an originating user to originating user */
1186 void User::WriteFrom(User *user, const char* text, ...)
1189 char textbuffer[MAXBUF];
1191 va_start(argsPtr, text);
1192 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1195 this->WriteFrom(user, std::string(textbuffer));
1199 /* write text to an destination user from a source user (e.g. user privmsg) */
1201 void User::WriteTo(User *dest, const char *data, ...)
1203 char textbuffer[MAXBUF];
1206 va_start(argsPtr, data);
1207 vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1210 this->WriteTo(dest, std::string(textbuffer));
1213 void User::WriteTo(User *dest, const std::string &data)
1215 dest->WriteFrom(this, data);
1218 void User::WriteCommon(const char* text, ...)
1220 char textbuffer[MAXBUF];
1223 if (this->registered != REG_ALL || quitting)
1226 int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1228 va_start(argsPtr, text);
1229 vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1232 this->WriteCommonRaw(std::string(textbuffer), true);
1235 void User::WriteCommonExcept(const char* text, ...)
1237 char textbuffer[MAXBUF];
1240 if (this->registered != REG_ALL || quitting)
1243 int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1245 va_start(argsPtr, text);
1246 vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1249 this->WriteCommonRaw(std::string(textbuffer), false);
1252 void User::WriteCommonRaw(const std::string &line, bool include_self)
1254 if (this->registered != REG_ALL || quitting)
1257 uniq_id_t uniq_id = ++already_sent;
1259 UserChanList include_c(chans);
1260 std::map<User*,bool> exceptions;
1262 exceptions[this] = include_self;
1264 FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1266 for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1269 if (IS_LOCAL(u) && !u->quitting)
1271 already_sent[u->fd] = uniq_id;
1276 for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1279 const UserMembList* ulist = c->GetUsers();
1280 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1283 if (IS_LOCAL(u) && !u->quitting && already_sent[u->fd] != uniq_id)
1285 already_sent[u->fd] = uniq_id;
1292 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1297 if (this->registered != REG_ALL)
1300 uniq_id_t uniq_id = ++already_sent;
1302 snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1303 snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1304 std::string out1 = tb1;
1305 std::string out2 = tb2;
1307 UserChanList include_c(chans);
1308 std::map<User*,bool> exceptions;
1310 FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1312 for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1315 if (IS_LOCAL(u) && !u->quitting)
1317 already_sent[u->fd] = uniq_id;
1319 u->Write(IS_OPER(u) ? out2 : out1);
1322 for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1324 const UserMembList* ulist = (*v)->GetUsers();
1325 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1328 if (IS_LOCAL(u) && !u->quitting && (already_sent[u->fd] != uniq_id))
1330 already_sent[u->fd] = uniq_id;
1331 u->Write(IS_OPER(u) ? out2 : out1);
1337 void User::WriteWallOps(const std::string &text)
1339 std::string wallop("WALLOPS :");
1340 wallop.append(text);
1342 for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1345 if (t->IsModeSet('w'))
1346 this->WriteTo(t,wallop);
1350 void User::WriteWallOps(const char* text, ...)
1352 if (!IS_LOCAL(this))
1355 char textbuffer[MAXBUF];
1358 va_start(argsPtr, text);
1359 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1362 this->WriteWallOps(std::string(textbuffer));
1365 /* return 0 or 1 depending if users u and u2 share one or more common channels
1366 * (used by QUIT, NICK etc which arent channel specific notices)
1368 * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1369 * the first users channels then the second users channels within the outer loop,
1370 * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1371 * all possible iterations). However this new function instead checks against the
1372 * channel's userlist in the inner loop which is a std::map<User*,User*>
1373 * and saves us time as we already know what pointer value we are after.
1374 * Don't quote me on the maths as i am not a mathematician or computer scientist,
1375 * but i believe this algorithm is now x+(log y) maximum iterations instead.
1377 bool User::SharesChannelWith(User *other)
1379 if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1383 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1385 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1386 * by replacing it with a map::find which *should* be more efficient
1388 if ((*i)->HasUser(other))
1394 bool User::ChangeName(const char* gecos)
1396 if (!this->fullname.compare(gecos))
1401 ModResult MOD_RESULT;
1402 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (this,gecos));
1403 if (MOD_RESULT == MOD_RES_DENY)
1405 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1407 this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1412 void User::DoHostCycle(const std::string &quitline)
1414 char buffer[MAXBUF];
1416 if (!ServerInstance->Config->CycleHosts)
1419 uniq_id_t silent_id = ++already_sent;
1420 uniq_id_t seen_id = ++already_sent;
1422 UserChanList include_c(chans);
1423 std::map<User*,bool> exceptions;
1425 FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1427 for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1430 if (IS_LOCAL(u) && !u->quitting)
1434 already_sent[u->fd] = seen_id;
1439 already_sent[u->fd] = silent_id;
1443 for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1446 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1447 std::string joinline(buffer);
1448 std::string modeline = ServerInstance->Modes->ModeString(this, c);
1449 if (modeline.length() > 0)
1451 snprintf(buffer, MAXBUF, ":%s MODE %s +%s", GetFullHost().c_str(), c->name.c_str(), modeline.c_str());
1455 const UserMembList *ulist = c->GetUsers();
1456 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1459 if (u == this || !IS_LOCAL(u))
1461 if (already_sent[u->fd] == silent_id)
1464 if (already_sent[u->fd] != seen_id)
1467 already_sent[i->first->fd] = seen_id;
1470 if (modeline.length() > 0)
1476 bool User::ChangeDisplayedHost(const char* shost)
1483 ModResult MOD_RESULT;
1484 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (this,shost));
1485 if (MOD_RESULT == MOD_RES_DENY)
1489 FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1491 std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1493 /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1494 this->dhost.assign(shost, 0, 64);
1496 this->InvalidateCache();
1498 this->DoHostCycle(quitstr);
1501 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1506 bool User::ChangeIdent(const char* newident)
1508 if (this->ident == newident)
1511 FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1513 std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1515 this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1517 this->InvalidateCache();
1519 this->DoHostCycle(quitstr);
1524 void User::SendAll(const char* command, const char* text, ...)
1526 char textbuffer[MAXBUF];
1527 char formatbuffer[MAXBUF];
1530 va_start(argsPtr, text);
1531 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1534 snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1535 std::string fmt = formatbuffer;
1537 for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1544 std::string User::ChannelList(User* source, bool spy)
1548 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1551 /* If the target is the sender, neither +p nor +s is set, or
1552 * the channel contains the user, it is not a spy channel
1554 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1555 list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1561 void User::SplitChanList(User* dest, const std::string &cl)
1564 std::ostringstream prefix;
1565 std::string::size_type start, pos, length;
1567 prefix << this->nick << " " << dest->nick << " :";
1568 line = prefix.str();
1569 int namelen = ServerInstance->Config->ServerName.length() + 6;
1571 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1573 length = (pos == std::string::npos) ? cl.length() : pos;
1575 if (line.length() + namelen + length - start > 510)
1577 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1578 line = prefix.str();
1581 if(pos == std::string::npos)
1583 line.append(cl.substr(start, length - start));
1588 line.append(cl.substr(start, length - start + 1));
1594 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1599 * Sets a user's connection class.
1600 * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1601 * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1602 * then their ip will be taken as 'priority' anyway, so for example,
1603 * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1605 ConnectClass* User::SetClass(const std::string &explicit_name)
1607 ConnectClass *found = NULL;
1609 if (!IS_LOCAL(this))
1612 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1614 if (!explicit_name.empty())
1616 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1618 ConnectClass* c = *i;
1620 if (explicit_name == c->name)
1622 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1629 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1631 ConnectClass* c = *i;
1633 if (c->type == CC_ALLOW)
1635 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->host.c_str(), c->GetPort(), c->GetName().c_str());
1639 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1642 /* check if host matches.. */
1643 if (c->GetHost().length() && !InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1644 !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1646 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1651 * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1652 * because we should attempt to find another class if this one doesn't match us. -- w00t
1654 if (c->limit && (c->GetReferenceCount() >= c->limit))
1656 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1660 /* if it requires a port ... */
1663 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1665 /* and our port doesn't match, fail. */
1666 if (this->GetServerPort() != c->GetPort())
1668 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetServerPort());
1673 /* we stop at the first class that meets ALL critera. */
1680 * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1687 return this->MyClass;
1690 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1691 * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1692 * then their ip will be taken as 'priority' anyway, so for example,
1693 * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1695 ConnectClass* User::GetClass()
1697 return this->MyClass;
1700 void User::PurgeEmptyChannels()
1702 std::vector<Channel*> to_delete;
1704 // firstly decrement the count on each channel
1705 for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1708 c->RemoveAllPrefixes(this);
1709 if (c->DelUser(this) == 0)
1711 /* No users left in here, mark it for deletion */
1714 to_delete.push_back(c);
1718 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1723 for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1725 Channel* thischan = *n;
1726 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1727 if (i2 != ServerInstance->chanlist->end())
1729 ModResult MOD_RESULT;
1730 FIRST_MOD_RESULT(OnChannelPreDelete, MOD_RESULT, (i2->second));
1731 if (MOD_RESULT == MOD_RES_DENY)
1732 continue; // delete halted by module
1733 FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1735 ServerInstance->chanlist->erase(i2);
1736 this->chans.erase(*n);
1743 void User::ShowMOTD()
1745 if (!ServerInstance->Config->MOTD.size())
1747 this->WriteNumeric(ERR_NOMOTD, "%s :Message of the day file is missing.",this->nick.c_str());
1750 this->WriteNumeric(RPL_MOTDSTART, "%s :%s message of the day", this->nick.c_str(), ServerInstance->Config->ServerName.c_str());
1752 for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1753 this->WriteNumeric(RPL_MOTD, "%s :- %s",this->nick.c_str(),i->c_str());
1755 this->WriteNumeric(RPL_ENDOFMOTD, "%s :End of message of the day.", this->nick.c_str());
1758 void User::ShowRULES()
1760 if (!ServerInstance->Config->RULES.size())
1762 this->WriteNumeric(ERR_NORULES, "%s :RULES File is missing",this->nick.c_str());
1766 this->WriteNumeric(RPL_RULESTART, "%s :- %s Server Rules -",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
1768 for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1769 this->WriteNumeric(RPL_RULES, "%s :- %s",this->nick.c_str(),i->c_str());
1771 this->WriteNumeric(RPL_RULESEND, "%s :End of RULES command.",this->nick.c_str());
1774 void User::IncreasePenalty(int increase)
1776 this->Penalty += increase;
1779 void User::DecreasePenalty(int decrease)
1781 this->Penalty -= decrease;
1784 void FakeUser::SetFakeServer(std::string name)
1787 this->server = name;
1790 const std::string FakeUser::GetFullHost()
1792 if (!ServerInstance->Config->HideWhoisServer.empty())
1793 return ServerInstance->Config->HideWhoisServer;
1797 const std::string FakeUser::GetFullRealHost()
1799 if (!ServerInstance->Config->HideWhoisServer.empty())
1800 return ServerInstance->Config->HideWhoisServer;
1804 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1805 : config(tag), type(t), name("unnamed"), registration_timeout(0), host(mask),
1806 pingtime(0), pass(""), hash(""), softsendqmax(0), hardsendqmax(0),
1807 recvqmax(0), maxlocal(0), maxglobal(0), maxchans(0), port(0), limit(0)
1811 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1812 : config(tag), type(t), name("unnamed"),
1813 registration_timeout(parent.registration_timeout), host(mask),
1814 pingtime(parent.pingtime), pass(parent.pass), hash(parent.hash),
1815 softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax),
1816 recvqmax(parent.recvqmax), maxlocal(parent.maxlocal),
1817 maxglobal(parent.maxglobal), maxchans(parent.maxchans),
1818 port(parent.port), limit(parent.limit)
1822 void ConnectClass::Update(const ConnectClass* src)
1825 registration_timeout = src->registration_timeout;
1827 pingtime = src->pingtime;
1830 softsendqmax = src->softsendqmax;
1831 hardsendqmax = src->hardsendqmax;
1832 recvqmax = src->recvqmax;
1833 maxlocal = src->maxlocal;
1834 maxglobal = src->maxglobal;