1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
17 #include "inspircd_config.h"
18 #include "configreader.h"
20 #include "connection.h"
28 #include "inspstring.h"
30 #include "helperfuncs.h"
32 #include "socketengine.h"
37 #include "cull_list.h"
39 extern InspIRCd* ServerInstance;
40 extern int WHOWAS_STALE;
41 extern int WHOWAS_MAX;
42 extern std::vector<Module*> modules;
43 extern std::vector<ircd_module*> factory;
44 extern std::vector<InspSocket*> module_sockets;
46 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
48 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
49 extern ServerConfig *Config;
50 extern user_hash clientlist;
54 extern std::vector<userrec*> local_users;
56 std::vector<userrec*> all_opers;
58 typedef std::map<irc::string,char*> opertype_t;
59 typedef opertype_t operclass_t;
62 operclass_t operclass;
64 bool InitTypes(const char* tag)
66 for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
76 bool InitClasses(const char* tag)
78 for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
88 bool DoType(const char* tag, char** entries, void** values, int* types)
90 char* TypeName = (char*)values[0];
91 char* Classes = (char*)values[1];
93 opertypes[TypeName] = strdup(Classes);
94 log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
98 bool DoClass(const char* tag, char** entries, void** values, int* types)
100 char* ClassName = (char*)values[0];
101 char* CommandList = (char*)values[1];
103 operclass[ClassName] = strdup(CommandList);
104 log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
108 bool DoneClassesAndTypes(const char* tag)
113 bool userrec::ProcessNoticeMasks(const char *sm)
129 if ((*c >= 'A') && (*c <= 'z'))
130 this->SetNoticeMask(*c, adding);
140 bool userrec::IsNoticeMaskSet(unsigned char sm)
142 return (snomasks[sm-65]);
145 void userrec::SetNoticeMask(unsigned char sm, bool value)
147 snomasks[sm-65] = value;
150 const char* userrec::FormatNoticeMasks()
152 static char data[MAXBUF];
155 for (int n = 0; n < 64; n++)
158 data[offset++] = n+65;
167 bool userrec::IsModeSet(unsigned char m)
169 return (modes[m-65]);
172 void userrec::SetMode(unsigned char m, bool value)
177 const char* userrec::FormatModes()
179 static char data[MAXBUF];
181 for (int n = 0; n < 64; n++)
184 data[offset++] = n+65;
192 // the PROPER way to do it, AVOID bzero at *ALL* costs
193 *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
194 server = (char*)FindServerNamePtr(Config->ServerName);
196 lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
197 timeout = flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
198 haspassed = dns_done = false;
203 chans.resize(MAXCHANS);
204 memset(modes,0,sizeof(modes));
206 for (unsigned int n = 0; n < MAXCHANS; n++)
208 ucrec* x = new ucrec();
217 for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
219 ucrec* x = (ucrec*)*n;
224 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
225 void userrec::MakeHost(char* nhost)
227 /* This is much faster than snprintf */
229 for(char* n = ident; *n; n++)
232 for(char* n = host; *n; n++)
237 void userrec::CloseSocket()
239 shutdown(this->fd,2);
243 char* userrec::GetFullHost()
245 static char result[MAXBUF];
247 for(char* n = nick; *n; n++)
250 for(char* n = ident; *n; n++)
253 for(char* n = dhost; *n; n++)
259 char* userrec::MakeWildHost()
261 static char nresult[MAXBUF];
263 *t++ = '*'; *t++ = '!';
264 *t++ = '*'; *t++ = '@';
265 for(char* n = dhost; *n; n++)
271 int userrec::ReadData(void* buffer, size_t size)
275 return read(this->fd, buffer, size);
282 char* userrec::GetFullRealHost()
284 static char fresult[MAXBUF];
286 for(char* n = nick; *n; n++)
289 for(char* n = ident; *n; n++)
292 for(char* n = host; *n; n++)
298 bool userrec::IsInvited(irc::string &channel)
300 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
302 irc::string compare = i->channel;
304 if (compare == channel)
313 InvitedList* userrec::GetInviteList()
318 void userrec::InviteTo(irc::string &channel)
323 invites.push_back(i);
326 void userrec::RemoveInvite(irc::string &channel)
328 log(DEBUG,"Removing invites");
332 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
334 irc::string compare = i->channel;
336 if (compare == channel)
345 bool userrec::HasPermission(const std::string &command)
352 * users on remote servers can completely bypass all permissions based checks.
353 * This prevents desyncs when one server has different type/class tags to another.
354 * That having been said, this does open things up to the possibility of source changes
355 * allowing remote kills, etc - but if they have access to the src, they most likely have
356 * access to the conf - so it's an end to a means either way.
361 // are they even an oper at all?
364 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
365 if (iter_opertype != opertypes.end())
367 char* Classes = strdup(iter_opertype->second);
368 char* myclass = strtok_r(Classes," ",&savept);
371 operclass_t::iterator iter_operclass = operclass.find(myclass);
372 if (iter_operclass != operclass.end())
374 char* CommandList = strdup(iter_operclass->second);
375 mycmd = strtok_r(CommandList," ",&savept2);
378 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
384 mycmd = strtok_r(NULL," ",&savept2);
388 myclass = strtok_r(NULL," ",&savept);
397 bool userrec::AddBuffer(const std::string &a)
401 /* NB: std::string is arsey about \r and \n and tries to translate them
402 * somehow, so we CANNOT use std::string::find() here :(
404 for (std::string::const_iterator i = a.begin(); i != a.end(); i++)
412 if (recvq.length() > (unsigned)this->recvqmax)
414 this->SetWriteError("RecvQ exceeded");
415 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
422 bool userrec::BufferIsReady()
424 return (recvq.find('\n') != std::string::npos);
427 void userrec::ClearBuffer()
432 std::string userrec::GetBuffer()
437 /* Strip any leading \r or \n off the string.
438 * Usually there are only one or two of these,
439 * so its is computationally cheap to do.
441 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
442 recvq.erase(recvq.begin());
444 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
446 /* Find the first complete line, return it as the
447 * result, and leave the recvq as whats left
451 std::string ret = std::string(recvq.begin(), x);
452 recvq.erase(recvq.begin(), x + 1);
459 void userrec::AddWriteBuf(const std::string &data)
461 if (*this->GetWriteError())
464 if (sendq.length() + data.length() > (unsigned)this->sendqmax)
467 * Fix by brain - Set the error text BEFORE calling writeopers, because
468 * if we dont it'll recursively call here over and over again trying
469 * to repeatedly add the text to the sendq!
471 this->SetWriteError("SendQ exceeded");
472 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
479 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
480 void userrec::FlushWriteBuf()
482 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
484 const char* tb = this->sendq.c_str();
485 int n_sent = write(this->fd,tb,this->sendq.length());
489 this->SetWriteError(strerror(errno));
496 // update the user's stats counters
497 this->bytes_out += n_sent;
503 void userrec::SetWriteError(const std::string &error)
505 log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
506 // don't try to set the error twice, its already set take the first string.
507 if (!this->WriteError.length())
508 this->WriteError = error;
511 const char* userrec::GetWriteError()
513 return this->WriteError.c_str();
516 void AddOper(userrec* user)
518 log(DEBUG,"Oper added to optimization list");
519 all_opers.push_back(user);
522 void DeleteOper(userrec* user)
524 for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
528 log(DEBUG,"Oper removed from optimization list");
535 void kill_link(userrec *user,const char* r)
537 user_hash::iterator iter = clientlist.find(user->nick);
540 * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
541 * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
543 * I can't imagine this blowing up, so I'm commenting it out. We still check
544 * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
546 * if (iter == clientlist.end())
552 strlcpy(reason,r,MAXQUIT-1);
553 log(DEBUG,"kill_link: %s %d '%s'",user->nick,user->fd,reason);
556 Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
558 if (user->registered == 7)
560 purge_empty_chans(user);
561 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
562 WriteCommonExcept(user,"QUIT :%s",reason);
566 user->FlushWriteBuf();
568 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
572 if (Config->GetIOHook(user->port))
576 Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
578 catch (ModuleException& modexcept)
580 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
584 ServerInstance->SE->DelFd(user->fd);
589 * this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
590 * if they were an oper with +s.
593 * In the current implementation, we only show local quits, as we only show local connects. With
594 * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
596 if (user->registered == 7)
599 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
603 if (iter != clientlist.end())
605 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
608 fd_ref_table[user->fd] = NULL;
609 if (find(local_users.begin(),local_users.end(),user) != local_users.end())
611 local_users.erase(find(local_users.begin(),local_users.end(),user));
612 log(DEBUG,"Delete local user");
615 clientlist.erase(iter);
620 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
622 this->host = strdup(user->host);
623 this->dhost = strdup(user->dhost);
624 this->ident = strdup(user->ident);
625 this->server = user->server;
626 this->gecos = strdup(user->fullname);
629 WhoWasGroup::~WhoWasGroup()
641 /* adds or updates an entry in the whowas list */
642 void AddWhoWas(userrec* u)
644 whowas_users::iterator iter = whowas.find(u->nick);
646 if (iter == whowas.end())
648 whowas_set* n = new whowas_set;
649 WhoWasGroup *a = new WhoWasGroup(u);
655 whowas_set* group = (whowas_set*)iter->second;
657 if (group->size() > 10)
659 WhoWasGroup *a = (WhoWasGroup*)*(group->begin());
664 WhoWasGroup *a = new WhoWasGroup(u);
669 /* every hour, run this function which removes all entries over 3 days */
670 void MaintainWhoWas(time_t TIME)
672 for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
674 whowas_set* n = (whowas_set*)iter->second;
677 while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
679 WhoWasGroup *a = *(n->begin());
681 n->erase(n->begin());
687 /* add a client connection to the sockets list */
688 void AddClient(int socket, int port, bool iscached, in_addr ip4)
690 std::string tempnick = ConvToStr(socket) + "-unknown";
691 user_hash::iterator iter = clientlist.find(tempnick);
692 const char *ipaddr = inet_ntoa(ip4);
697 * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
698 * using one as a registered connection. As they are per fd, we can also safely assume
699 * that we wont have collisions. Therefore, if the nick exists in the list, its only
700 * used by a dead socket, erase the iterator so that the new client may reclaim it.
701 * this was probably the cause of 'server ignores me when i hammer it with reconnects'
702 * issue in earlier alphas/betas
704 if (iter != clientlist.end())
706 userrec* goner = iter->second;
708 clientlist.erase(iter);
711 log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
713 clientlist[tempnick] = new userrec();
714 clientlist[tempnick]->fd = socket;
715 strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
717 /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
718 for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
719 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
720 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
722 clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
723 /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
724 strcpy(clientlist[tempnick]->ident, "unknown");
726 clientlist[tempnick]->registered = 0;
727 clientlist[tempnick]->signon = TIME + Config->dns_timeout;
728 clientlist[tempnick]->lastping = 1;
729 clientlist[tempnick]->ip4 = ip4;
730 clientlist[tempnick]->port = port;
732 // set the registration timeout for this user
733 unsigned long class_regtimeout = 90;
735 long class_threshold = 5;
736 long class_sqmax = 262144; // 256kb
737 long class_rqmax = 4096; // 4k
739 for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
741 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
743 class_regtimeout = (unsigned long)i->registration_timeout;
744 class_flood = i->flood;
745 clientlist[tempnick]->pingmax = i->pingtime;
746 class_threshold = i->threshold;
747 class_sqmax = i->sendqmax;
748 class_rqmax = i->recvqmax;
753 clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
754 clientlist[tempnick]->timeout = TIME+class_regtimeout;
755 clientlist[tempnick]->flood = class_flood;
756 clientlist[tempnick]->threshold = class_threshold;
757 clientlist[tempnick]->sendqmax = class_sqmax;
758 clientlist[tempnick]->recvqmax = class_rqmax;
760 fd_ref_table[socket] = clientlist[tempnick];
761 local_users.push_back(clientlist[tempnick]);
763 if (local_users.size() > Config->SoftLimit)
765 kill_link(clientlist[tempnick],"No more connections allowed");
769 if (local_users.size() >= MAXCLIENTS)
771 kill_link(clientlist[tempnick],"No more connections allowed");
777 * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
778 * its a pretty big but for the moment valid assumption:
779 * file descriptors are handed out starting at 0, and are recycled as theyre freed.
780 * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
781 * irc server at once (or the irc server otherwise initiating this many connections, files etc)
782 * which for the time being is a physical impossibility (even the largest networks dont have more
783 * than about 10,000 users on ONE server!)
785 if ((unsigned)socket >= MAX_DESCRIPTORS)
787 kill_link(clientlist[tempnick],"Server is full");
790 char* e = matches_exception(ipaddr);
793 char* r = matches_zline(ipaddr);
797 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
798 kill_link(clientlist[tempnick],reason);
805 ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
808 WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
811 long FindMatchingGlobal(userrec* user)
814 for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
816 if (a->second->ip4.s_addr == user->ip4.s_addr)
822 long FindMatchingLocal(userrec* user)
825 for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
827 userrec* comp = (userrec*)(*a);
828 if (comp->ip4.s_addr == user->ip4.s_addr)
834 void FullConnectUser(userrec* user, CullList* Goners)
836 ServerInstance->stats->statsConnects++;
837 user->idle_lastmsg = TIME;
838 log(DEBUG,"ConnectUser: %s",user->nick);
840 ConnectClass a = GetClass(user);
842 if (a.type == CC_DENY)
844 Goners->AddItem(user,"Unauthorised connection");
848 if ((*(a.pass.c_str())) && (!user->haspassed))
850 Goners->AddItem(user,"Invalid password");
854 if (FindMatchingLocal(user) > a.maxlocal)
856 Goners->AddItem(user,"No more connections allowed from your host via this connect class (local)");
857 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s",a.maxlocal,inet_ntoa(user->ip4));
860 else if (FindMatchingGlobal(user) > a.maxglobal)
862 Goners->AddItem(user,"No more connections allowed from your host via this connect class (global)");
863 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal,inet_ntoa(user->ip4));
867 char match_against[MAXBUF];
868 snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
869 char* e = matches_exception(match_against);
873 char* r = matches_gline(match_against);
878 snprintf(reason,MAXBUF,"G-Lined: %s",r);
879 Goners->AddItem(user,reason);
883 r = matches_kline(match_against);
888 snprintf(reason,MAXBUF,"K-Lined: %s",r);
889 Goners->AddItem(user,reason);
895 WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
896 WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
897 WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
898 WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
899 WriteServ(user->fd,"004 %s %s %s iowghrasxRVSCWBG lvhopsmntikrcaqbegIOLQRSKVHGCNT vhobeIaqglk",user->nick,Config->ServerName,VERSION);
901 // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
902 // so i'd better split it :)
903 std::stringstream out(Config->data005);
904 std::string token = "";
905 std::string line5 = "";
906 int token_counter = 0;
911 line5 = line5 + token + " ";
914 if ((token_counter >= 13) || (out.eof() == true))
916 WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
925 * fix 3 by brain, move registered = 7 below these so that spurious modes and host
926 * changes dont go out onto the network and produce 'fake direction'.
928 FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
929 FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
930 user->registered = 7;
931 WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,inet_ntoa(user->ip4));
935 * re-allocates a nick in the user_hash after they change nicknames,
936 * returns a pointer to the new user as it may have moved
938 userrec* ReHashNick(const char* Old, const char* New)
940 //user_hash::iterator newnick;
941 user_hash::iterator oldnick = clientlist.find(Old);
943 log(DEBUG,"ReHashNick: %s %s",Old,New);
945 if (!strcasecmp(Old,New))
947 log(DEBUG,"old nick is new nick, skipping");
948 return oldnick->second;
951 if (oldnick == clientlist.end())
952 return NULL; /* doesnt exist */
954 log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
956 userrec* olduser = oldnick->second;
957 clientlist[New] = olduser;
958 clientlist.erase(oldnick);
960 log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
962 return clientlist[New];
965 void force_nickchange(userrec* user,const char* newnick)
972 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
976 ServerInstance->stats->statsCollisions++;
977 kill_link(user,"Nickname collision");
981 if (matches_qline(newnick))
983 ServerInstance->stats->statsCollisions++;
984 kill_link(user,"Nickname collision");
992 strlcpy(nick,newnick,MAXBUF-1);
995 if (user->registered == 7)
999 std::string cmd = "NICK";
1001 ServerInstance->Parser->CallHandler(cmd,pars,1,user);