1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * Inspire is copyright (C) 2002-2004 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 * ---------------------------------------------------
19 #include "inspircd_config.h"
21 #include "connection.h"
29 #include "inspstring.h"
31 #include "helperfuncs.h"
33 #include "socketengine.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[65535];
48 extern userrec* fd_ref_table[65536];
49 extern ServerConfig *Config;
50 extern user_hash clientlist;
51 extern whowas_hash whowas;
52 extern Module* IOHookModule;
53 std::vector<userrec*> local_users;
55 std::vector<userrec*> all_opers;
57 template<typename T> inline string ConvToStr(const T &in)
60 if (!(tmp << in)) return string();
66 // the PROPER way to do it, AVOID bzero at *ALL* costs
68 strcpy(ip,"127.0.0.1");
75 server = (char*)FindServerNamePtr(Config->ServerName);
80 fd = lastping = signon = idle_lastmsg = nping = registered = 0;
81 flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
94 void userrec::CloseSocket()
100 char* userrec::GetFullHost()
102 static char result[MAXBUF];
103 snprintf(result,MAXBUF,"%s!%s@%s",nick,ident,dhost);
107 int userrec::ReadData(void* buffer, size_t size)
111 return read(this->fd, buffer, size);
117 char* userrec::GetFullRealHost()
119 static char fresult[MAXBUF];
120 snprintf(fresult,MAXBUF,"%s!%s@%s",nick,ident,host);
124 bool userrec::IsInvited(irc::string &channel)
126 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
128 irc::string compare = i->channel;
129 if (compare == channel)
137 InvitedList* userrec::GetInviteList()
142 void userrec::InviteTo(irc::string &channel)
146 invites.push_back(i);
149 void userrec::RemoveInvite(irc::string &channel)
151 log(DEBUG,"Removing invites");
154 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
156 irc::string compare = i->channel;
157 if (compare == channel)
166 bool userrec::HasPermission(std::string &command)
168 char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
173 // users on u-lined servers can completely bypass
174 // all permissions based checks.
176 // of course, if this is sent to a remote server and this
177 // server is not ulined there, then that other server
178 // silently drops the command.
179 if (is_uline(this->server))
182 // are they even an oper at all?
183 if (strchr(this->modes,'o'))
185 for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
187 Config->ConfValue("type","name",j,TypeName,&Config->config_f);
188 if (!strcmp(TypeName,this->oper))
190 Config->ConfValue("type","classes",j,Classes,&Config->config_f);
191 char* myclass = strtok_r(Classes," ",&savept);
194 for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
196 Config->ConfValue("class","name",k,ClassName,&Config->config_f);
197 if (!strcmp(ClassName,myclass))
199 Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
200 mycmd = strtok_r(CommandList," ",&savept2);
203 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
207 mycmd = strtok_r(NULL," ",&savept2);
211 myclass = strtok_r(NULL," ",&savept);
220 bool userrec::AddBuffer(std::string a)
223 for (unsigned int i = 0; i < a.length(); i++)
224 if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
226 std::stringstream stream(recvq);
228 recvq = stream.str();
230 // count the size of the first line in the buffer.
231 while (i < recvq.length())
233 if (recvq[i++] == '\n')
236 if (recvq.length() > (unsigned)this->recvqmax)
238 this->SetWriteError("RecvQ exceeded");
239 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
241 // return false if we've had more than 600 characters WITHOUT
242 // a carriage return (this is BAD, drop the socket)
246 bool userrec::BufferIsReady()
248 for (unsigned int i = 0; i < recvq.length(); i++)
249 if (recvq[i] == '\n')
254 void userrec::ClearBuffer()
259 std::string userrec::GetBuffer()
263 char* line = (char*)recvq.c_str();
264 std::string ret = "";
265 while ((*line != '\n') && (strlen(line)))
270 if ((*line == '\n') || (*line == '\r'))
276 void userrec::AddWriteBuf(std::string data)
278 if (this->GetWriteError() != "")
280 if (sendq.length() + data.length() > (unsigned)this->sendqmax)
282 /* Fix by brain - Set the error text BEFORE calling writeopers, because
283 * if we dont it'll recursively call here over and over again trying
284 * to repeatedly add the text to the sendq!
286 this->SetWriteError("SendQ exceeded");
287 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
290 std::stringstream stream;
291 stream << sendq << data;
292 sendq = stream.str();
295 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
296 void userrec::FlushWriteBuf()
300 char* tb = (char*)this->sendq.c_str();
301 int n_sent = write(this->fd,tb,this->sendq.length());
304 this->SetWriteError(strerror(errno));
311 // update the user's stats counters
312 this->bytes_out += n_sent;
318 void userrec::SetWriteError(std::string error)
320 log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
321 // don't try to set the error twice, its already set take the first string.
322 if (this->WriteError == "")
323 this->WriteError = error;
326 std::string userrec::GetWriteError()
328 return this->WriteError;
331 void AddOper(userrec* user)
333 log(DEBUG,"Oper added to optimization list");
334 all_opers.push_back(user);
337 void DeleteOper(userrec* user)
339 for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
343 log(DEBUG,"Oper removed from optimization list");
350 void kill_link(userrec *user,const char* r)
352 user_hash::iterator iter = clientlist.find(user->nick);
356 strncpy(reason,r,MAXBUF);
358 if (strlen(reason)>MAXQUIT)
360 reason[MAXQUIT-1] = '\0';
363 log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
364 Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
365 log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
367 if (user->registered == 7) {
368 FOREACH_MOD OnUserQuit(user,reason);
369 WriteCommonExcept(user,"QUIT :%s",reason);
372 user->FlushWriteBuf();
374 FOREACH_MOD OnUserDisconnect(user);
380 IOHookModule->OnRawSocketClose(user->fd);
382 ServerInstance->SE->DelFd(user->fd);
386 // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
387 // if they were an oper with +s.
388 if (user->registered == 7) {
389 purge_empty_chans(user);
390 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
392 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
396 if (iter != clientlist.end())
398 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
401 fd_ref_table[user->fd] = NULL;
402 if (find(local_users.begin(),local_users.end(),user) != local_users.end())
404 local_users.erase(find(local_users.begin(),local_users.end(),user));
405 log(DEBUG,"Delete local user");
408 clientlist.erase(iter);
413 void kill_link_silent(userrec *user,const char* r)
415 user_hash::iterator iter = clientlist.find(user->nick);
419 strncpy(reason,r,MAXBUF);
421 if (strlen(reason)>MAXQUIT)
423 reason[MAXQUIT-1] = '\0';
426 log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
427 Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
428 log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
430 user->FlushWriteBuf();
432 if (user->registered == 7) {
433 FOREACH_MOD OnUserQuit(user,reason);
434 WriteCommonExcept(user,"QUIT :%s",reason);
437 FOREACH_MOD OnUserDisconnect(user);
443 IOHookModule->OnRawSocketClose(user->fd);
445 ServerInstance->SE->DelFd(user->fd);
449 if (user->registered == 7) {
450 purge_empty_chans(user);
453 if (iter != clientlist.end())
455 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
458 fd_ref_table[user->fd] = NULL;
459 if (find(local_users.begin(),local_users.end(),user) != local_users.end())
461 log(DEBUG,"Delete local user");
462 local_users.erase(find(local_users.begin(),local_users.end(),user));
465 clientlist.erase(iter);
471 /* adds or updates an entry in the whowas list */
472 void AddWhoWas(userrec* u)
474 whowas_hash::iterator iter = whowas.find(u->nick);
475 WhoWasUser *a = new WhoWasUser();
476 strlcpy(a->nick,u->nick,NICKMAX);
477 strlcpy(a->ident,u->ident,IDENTMAX);
478 strlcpy(a->dhost,u->dhost,160);
479 strlcpy(a->host,u->host,160);
480 strlcpy(a->fullname,u->fullname,MAXGECOS);
481 strlcpy(a->server,u->server,256);
482 a->signon = u->signon;
484 /* MAX_WHOWAS: max number of /WHOWAS items
485 * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
486 * can be replaced by a newer one
489 if (iter == whowas.end())
491 if (whowas.size() >= (unsigned)WHOWAS_MAX)
493 for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
495 // 3600 seconds in an hour ;)
496 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
498 // delete the old one
499 if (i->second) delete i->second;
500 // replace with new one
502 log(DEBUG,"added WHOWAS entry, purged an old record");
506 // no space left and user doesnt exist. Don't leave ram in use!
507 log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
512 log(DEBUG,"added fresh WHOWAS entry");
518 log(DEBUG,"updated WHOWAS entry");
519 if (iter->second) delete iter->second;
524 /* add a client connection to the sockets list */
525 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
529 user_hash::iterator iter;
531 tempnick = ConvToStr(socket) + "-unknown";
532 sprintf(tn2,"%lu-unknown",(unsigned long)socket);
534 iter = clientlist.find(tempnick);
537 // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
538 // using one as a registered connection. As theyre per fd, we can also safely assume
539 // that we wont have collisions. Therefore, if the nick exists in the list, its only
540 // used by a dead socket, erase the iterator so that the new client may reclaim it.
541 // this was probably the cause of 'server ignores me when i hammer it with reconnects'
542 // issue in earlier alphas/betas
543 if (iter != clientlist.end())
545 userrec* goner = iter->second;
547 clientlist.erase(iter);
551 * It is OK to access the value here this way since we know
552 * it exists, we just created it above.
554 * At NO other time should you access a value in a map or a
557 clientlist[tempnick] = new userrec();
560 log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
562 clientlist[tempnick]->fd = socket;
563 strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
564 strlcpy(clientlist[tempnick]->host, host,160);
565 strlcpy(clientlist[tempnick]->dhost, host,160);
566 clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
567 strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
568 clientlist[tempnick]->registered = 0;
569 clientlist[tempnick]->signon = TIME + Config->dns_timeout;
570 clientlist[tempnick]->lastping = 1;
571 clientlist[tempnick]->port = port;
572 strlcpy(clientlist[tempnick]->ip,ip,16);
574 // set the registration timeout for this user
575 unsigned long class_regtimeout = 90;
577 long class_threshold = 5;
578 long class_sqmax = 262144; // 256kb
579 long class_rqmax = 4096; // 4k
581 for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
583 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
585 class_regtimeout = (unsigned long)i->registration_timeout;
586 class_flood = i->flood;
587 clientlist[tempnick]->pingmax = i->pingtime;
588 class_threshold = i->threshold;
589 class_sqmax = i->sendqmax;
590 class_rqmax = i->recvqmax;
595 clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
596 clientlist[tempnick]->timeout = TIME+class_regtimeout;
597 clientlist[tempnick]->flood = class_flood;
598 clientlist[tempnick]->threshold = class_threshold;
599 clientlist[tempnick]->sendqmax = class_sqmax;
600 clientlist[tempnick]->recvqmax = class_rqmax;
605 for (int i = 0; i < MAXCHANS; i++)
606 clientlist[tempnick]->chans.push_back(a);
608 if (clientlist.size() > Config->SoftLimit)
610 kill_link(clientlist[tempnick],"No more connections allowed");
614 if (clientlist.size() >= MAXCLIENTS)
616 kill_link(clientlist[tempnick],"No more connections allowed");
620 // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
621 // its a pretty big but for the moment valid assumption:
622 // file descriptors are handed out starting at 0, and are recycled as theyre freed.
623 // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
624 // irc server at once (or the irc server otherwise initiating this many connections, files etc)
625 // which for the time being is a physical impossibility (even the largest networks dont have more
626 // than about 10,000 users on ONE server!)
627 if ((unsigned)socket > 65534)
629 kill_link(clientlist[tempnick],"Server is full");
632 char* e = matches_exception(ip);
635 char* r = matches_zline(ip);
639 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
640 kill_link(clientlist[tempnick],reason);
644 fd_ref_table[socket] = clientlist[tempnick];
645 local_users.push_back(clientlist[tempnick]);
646 ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
649 void FullConnectUser(userrec* user)
651 ServerInstance->stats->statsConnects++;
652 user->idle_lastmsg = TIME;
653 log(DEBUG,"ConnectUser: %s",user->nick);
655 if ((strcmp(Passwd(user),"")) && (!user->haspassed))
657 kill_link(user,"Invalid password");
662 kill_link(user,"Unauthorised connection");
666 char match_against[MAXBUF];
667 snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
668 char* e = matches_exception(match_against);
671 char* r = matches_gline(match_against);
675 snprintf(reason,MAXBUF,"G-Lined: %s",r);
676 kill_link_silent(user,reason);
679 r = matches_kline(user->host);
683 snprintf(reason,MAXBUF,"K-Lined: %s",r);
684 kill_link_silent(user,reason);
690 WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
691 WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
692 WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
693 WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
694 WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
695 // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
697 v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
698 v << " MAXBANS=60 NICKLEN=" << NICKMAX;
699 v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
700 v << Config->Network;
701 std::string data005 = v.str();
702 FOREACH_MOD On005Numeric(data005);
703 // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
704 // so i'd better split it :)
705 std::stringstream out(data005);
706 std::string token = "";
707 std::string line5 = "";
708 int token_counter = 0;
712 line5 = line5 + token + " ";
714 if ((token_counter >= 13) || (out.eof() == true))
716 WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
723 // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
724 // onto the network and produce 'fake direction'
725 FOREACH_MOD OnUserConnect(user);
726 FOREACH_MOD OnGlobalConnect(user);
727 user->registered = 7;
728 WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
732 /* shows the message of the day, and any other on-logon stuff */
733 void ConnectUser(userrec *user)
735 // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
736 if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
738 FullConnectUser(user);
742 /* re-allocates a nick in the user_hash after they change nicknames,
743 * returns a pointer to the new user as it may have moved */
745 userrec* ReHashNick(char* Old, char* New)
747 //user_hash::iterator newnick;
748 user_hash::iterator oldnick = clientlist.find(Old);
750 log(DEBUG,"ReHashNick: %s %s",Old,New);
752 if (!strcasecmp(Old,New))
754 log(DEBUG,"old nick is new nick, skipping");
755 return oldnick->second;
758 if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
760 log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
762 userrec* olduser = oldnick->second;
763 clientlist[New] = olduser;
764 clientlist.erase(oldnick);
766 log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
768 return clientlist[New];
771 void force_nickchange(userrec* user,const char* newnick)
778 FOREACH_RESULT(OnUserPreNick(user,newnick));
780 ServerInstance->stats->statsCollisions++;
781 kill_link(user,"Nickname collision");
784 if (matches_qline(newnick))
786 ServerInstance->stats->statsCollisions++;
787 kill_link(user,"Nickname collision");
795 strncpy(nick,newnick,MAXBUF);
797 if (user->registered == 7)
801 handle_nick(pars,1,user);