/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd_config.h" #include "configreader.h" #include "channels.h" #include "connection.h" #include "users.h" #include "inspircd.h" #include #include "inspstring.h" #include "commands.h" #include "typedefs.h" #include "socketengine.h" #include "hashcomp.h" #include "wildcard.h" #include "xline.h" #include "cull_list.h" irc::whowas::whowas_users whowas; static unsigned long already_sent[MAX_DESCRIPTORS] = {0}; typedef std::map opertype_t; typedef opertype_t operclass_t; opertype_t opertypes; operclass_t operclass; /* XXX: Used for speeding up WriteCommon operations */ unsigned long uniq_id = 0; bool InitTypes(ServerConfig* conf, const char* tag) { for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++) { if (n->second) delete[] n->second; } opertypes.clear(); return true; } bool InitClasses(ServerConfig* conf, const char* tag) { for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++) { if (n->second) delete[] n->second; } operclass.clear(); return true; } bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types) { char* TypeName = (char*)values[0]; char* Classes = (char*)values[1]; opertypes[TypeName] = strdup(Classes); conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes); return true; } bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types) { char* ClassName = (char*)values[0]; char* CommandList = (char*)values[1]; operclass[ClassName] = strdup(CommandList); conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList); return true; } bool DoneClassesAndTypes(ServerConfig* conf, const char* tag) { return true; } bool userrec::ProcessNoticeMasks(const char *sm) { bool adding = true; const char *c = sm; while (c && *c) { switch (*c) { case '+': adding = true; break; case '-': adding = false; break; default: if ((*c >= 'A') && (*c <= 'z')) this->SetNoticeMask(*c, adding); break; } *c++; } return true; } void userrec::StartDNSLookup() { ServerInstance->Log(DEBUG,"Commencing reverse lookup"); try { ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance); res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false); this->ServerInstance->AddResolver(res_reverse); } catch (ModuleException& e) { ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason()); } } UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) : Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user) { this->fwd = forward; this->bound_fd = user->fd; } void UserResolver::OnLookupComplete(const std::string &result) { if ((!this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user)) { ServerInstance->Log(DEBUG,"Commencing forward lookup"); this->bound_user->stored_host = result; try { /* Check we didnt time out */ if (this->bound_user->registered != REG_ALL) { bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true); this->ServerInstance->AddResolver(bound_user->res_forward); } } catch (ModuleException& e) { ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason()); } } else if ((this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user)) { /* Both lookups completed */ if (this->bound_user->GetIPString() == result) { std::string hostname = this->bound_user->stored_host; if (hostname.length() < 65) { /* Check we didnt time out */ if (this->bound_user->registered != REG_ALL) { /* Hostnames starting with : are not a good thing (tm) */ if (*(hostname.c_str()) == ':') hostname = "0" + hostname; this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str()); this->bound_user->dns_done = true; strlcpy(this->bound_user->dhost, hostname.c_str(),64); strlcpy(this->bound_user->host, hostname.c_str(),64); } } else { this->bound_user->WriteServ("NOTICE Auth :*** Your hostname is longer than the maximum of 64 characters, using your IP address (%s) instead.", this->bound_user->GetIPString()); } } else { this->bound_user->WriteServ("NOTICE Auth :*** Your hostname does not match up with your IP address. Sorry, using your IP address (%s) instead.", this->bound_user->GetIPString()); } } } void UserResolver::OnError(ResolverError e, const std::string &errormessage) { if (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user) { /* Error message here */ this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString()); this->bound_user->dns_done = true; } } bool userrec::IsNoticeMaskSet(unsigned char sm) { return (snomasks[sm-65]); } void userrec::SetNoticeMask(unsigned char sm, bool value) { snomasks[sm-65] = value; } const char* userrec::FormatNoticeMasks() { static char data[MAXBUF]; int offset = 0; for (int n = 0; n < 64; n++) { if (snomasks[n]) data[offset++] = n+65; } data[offset] = 0; return data; } bool userrec::IsModeSet(unsigned char m) { return (modes[m-65]); } void userrec::SetMode(unsigned char m, bool value) { modes[m-65] = value; } const char* userrec::FormatModes() { static char data[MAXBUF]; int offset = 0; for (int n = 0; n < 64; n++) { if (modes[n]) data[offset++] = n+65; } data[offset] = 0; return data; } userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance) { ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance); // the PROPER way to do it, AVOID bzero at *ALL* costs *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0; server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName); reset_due = ServerInstance->Time(); lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0; timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0; haspassed = dns_done = false; recvq = ""; sendq = ""; WriteError = ""; res_forward = res_reverse = NULL; ip = NULL; chans.clear(); invites.clear(); chans.resize(MAXCHANS); memset(modes,0,sizeof(modes)); for (unsigned int n = 0; n < MAXCHANS; n++) { ucrec* x = new ucrec(); chans[n] = x; x->channel = NULL; x->uc_modes = 0; } } userrec::~userrec() { for (std::vector::iterator n = chans.begin(); n != chans.end(); n++) { ucrec* x = (ucrec*)*n; delete x; } if (ip) { if (this->GetProtocolFamily() == AF_INET) { delete (sockaddr_in*)ip; } #ifdef SUPPORT_IP6LINKS else { delete (sockaddr_in6*)ip; } #endif } } /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */ void userrec::MakeHost(char* nhost) { /* This is much faster than snprintf */ char* t = nhost; for(char* n = ident; *n; n++) *t++ = *n; *t++ = '@'; for(char* n = host; *n; n++) *t++ = *n; *t = 0; } void userrec::CloseSocket() { shutdown(this->fd,2); close(this->fd); } char* userrec::GetFullHost() { static char result[MAXBUF]; char* t = result; for(char* n = nick; *n; n++) *t++ = *n; *t++ = '!'; for(char* n = ident; *n; n++) *t++ = *n; *t++ = '@'; for(char* n = dhost; *n; n++) *t++ = *n; *t = 0; return result; } char* userrec::MakeWildHost() { static char nresult[MAXBUF]; char* t = nresult; *t++ = '*'; *t++ = '!'; *t++ = '*'; *t++ = '@'; for(char* n = dhost; *n; n++) *t++ = *n; *t = 0; return nresult; } int userrec::ReadData(void* buffer, size_t size) { if (this->fd > -1) { return read(this->fd, buffer, size); } else return 0; } char* userrec::GetFullRealHost() { static char fresult[MAXBUF]; char* t = fresult; for(char* n = nick; *n; n++) *t++ = *n; *t++ = '!'; for(char* n = ident; *n; n++) *t++ = *n; *t++ = '@'; for(char* n = host; *n; n++) *t++ = *n; *t = 0; return fresult; } bool userrec::IsInvited(irc::string &channel) { for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++) { irc::string compare = i->channel; if (compare == channel) { return true; } } return false; } InvitedList* userrec::GetInviteList() { return &invites; } void userrec::InviteTo(irc::string &channel) { Invited i; i.channel = channel; invites.push_back(i); } void userrec::RemoveInvite(irc::string &channel) { ServerInstance->Log(DEBUG,"Removing invites"); if (invites.size()) { for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++) { irc::string compare = i->channel; if (compare == channel) { invites.erase(i); return; } } } } bool userrec::HasPermission(const std::string &command) { char* mycmd; char* savept; char* savept2; /* * users on remote servers can completely bypass all permissions based checks. * This prevents desyncs when one server has different type/class tags to another. * That having been said, this does open things up to the possibility of source changes * allowing remote kills, etc - but if they have access to the src, they most likely have * access to the conf - so it's an end to a means either way. */ if (!IS_LOCAL(this)) return true; // are they even an oper at all? if (*this->oper) { opertype_t::iterator iter_opertype = opertypes.find(this->oper); if (iter_opertype != opertypes.end()) { char* Classes = strdup(iter_opertype->second); char* myclass = strtok_r(Classes," ",&savept); while (myclass) { operclass_t::iterator iter_operclass = operclass.find(myclass); if (iter_operclass != operclass.end()) { char* CommandList = strdup(iter_operclass->second); mycmd = strtok_r(CommandList," ",&savept2); while (mycmd) { if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*')) { free(Classes); free(CommandList); return true; } mycmd = strtok_r(NULL," ",&savept2); } free(CommandList); } myclass = strtok_r(NULL," ",&savept); } free(Classes); } } return false; } bool userrec::AddBuffer(std::string a) { std::string::size_type i = a.rfind('\r'); while (i != std::string::npos) { a.erase(i, 1); i = a.rfind('\r'); } if (a.length()) recvq.append(a); if (recvq.length() > (unsigned)this->recvqmax) { this->SetWriteError("RecvQ exceeded"); ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax); return false; } return true; } bool userrec::BufferIsReady() { return (recvq.find('\n') != std::string::npos); } void userrec::ClearBuffer() { recvq = ""; } std::string userrec::GetBuffer() { if (!recvq.length()) return ""; /* Strip any leading \r or \n off the string. * Usually there are only one or two of these, * so its is computationally cheap to do. */ while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n')) recvq.erase(recvq.begin()); for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++) { /* Find the first complete line, return it as the * result, and leave the recvq as whats left */ if (*x == '\n') { std::string ret = std::string(recvq.begin(), x); recvq.erase(recvq.begin(), x + 1); return ret; } } return ""; } void userrec::AddWriteBuf(const std::string &data) { if (*this->GetWriteError()) return; if (sendq.length() + data.length() > (unsigned)this->sendqmax) { /* * Fix by brain - Set the error text BEFORE calling writeopers, because * if we dont it'll recursively call here over and over again trying * to repeatedly add the text to the sendq! */ this->SetWriteError("SendQ exceeded"); ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax); return; } if (data.length() > 512) { std::string newdata(data); newdata.resize(510); newdata.append("\r\n"); sendq.append(newdata); } else { sendq.append(data); } } // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it) void userrec::FlushWriteBuf() { if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER)) { const char* tb = this->sendq.c_str(); int n_sent = write(this->fd,tb,this->sendq.length()); if (n_sent == -1) { if (errno != EAGAIN) this->SetWriteError(strerror(errno)); } else { // advance the queue tb += n_sent; this->sendq = tb; // update the user's stats counters this->bytes_out += n_sent; this->cmds_out++; } } } void userrec::SetWriteError(const std::string &error) { ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str()); // don't try to set the error twice, its already set take the first string. if (!this->WriteError.length()) { ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str()); this->WriteError = error; } } const char* userrec::GetWriteError() { return this->WriteError.c_str(); } void userrec::Oper(const std::string &opertype) { this->modes[UM_OPERATOR] = 1; this->WriteServ("MODE %s :+o", this->nick); FOREACH_MOD(I_OnOper, OnOper(this, opertype)); ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str()); strlcpy(this->oper, opertype.c_str(), NICKMAX - 1); ServerInstance->all_opers.push_back(this); FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype)); } void userrec::UnOper() { if (*this->oper) { *this->oper = 0; this->modes[UM_OPERATOR] = 0; for (std::vector::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++) { if (*a == this) { ServerInstance->Log(DEBUG,"Oper removed from optimization list"); ServerInstance->all_opers.erase(a); return; } } } } void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason) { user_hash::iterator iter = Instance->clientlist.find(user->nick); /* * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone, * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync. * * I can't imagine this blowing up, so I'm commenting it out. We still check * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t * * if (iter == clientlist.end()) * return; */ std::string reason = quitreason; if (reason.length() > MAXQUIT - 1) reason.resize(MAXQUIT - 1); if (IS_LOCAL(user)) user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str()); if (user->registered == REG_ALL) { user->PurgeEmptyChannels(); FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason)); user->WriteCommonExcept("QUIT :%s",reason.c_str()); } if (IS_LOCAL(user)) user->FlushWriteBuf(); FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user)); if (IS_LOCAL(user)) { if (Instance->Config->GetIOHook(user->GetPort())) { try { Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd); } catch (ModuleException& modexcept) { Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason()); } } Instance->SE->DelFd(user->fd); user->CloseSocket(); } /* * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything * if they were an oper with +s. * * XXX - * In the current implementation, we only show local quits, as we only show local connects. With * the proposed implmentation of snomasks however, this will likely change in the (near?) future. */ if (user->registered == REG_ALL) { if (IS_LOCAL(user)) Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str()); user->AddToWhoWas(); } if (iter != Instance->clientlist.end()) { Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user); if (IS_LOCAL(user)) { Instance->fd_ref_table[user->fd] = NULL; if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end()) Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user)); } Instance->clientlist.erase(iter); DELETE(user); } } namespace irc { namespace whowas { WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon) { this->host = strdup(user->host); this->dhost = strdup(user->dhost); this->ident = strdup(user->ident); this->server = user->server; this->gecos = strdup(user->fullname); } WhoWasGroup::~WhoWasGroup() { if (host) free(host); if (dhost) free(dhost); if (ident) free(ident); if (gecos) free(gecos); } /* every hour, run this function which removes all entries over 3 days */ void MaintainWhoWas(time_t t) { for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++) { whowas_set* n = (whowas_set*)iter->second; if (n->size()) { while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days { WhoWasGroup *a = *(n->begin()); DELETE(a); n->erase(n->begin()); } } } } }; }; /* adds or updates an entry in the whowas list */ void userrec::AddToWhoWas() { irc::whowas::whowas_users::iterator iter = whowas.find(this->nick); if (iter == whowas.end()) { irc::whowas::whowas_set* n = new irc::whowas::whowas_set; irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this); n->push_back(a); whowas[this->nick] = n; } else { irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second; if (group->size() > 10) { irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin()); DELETE(a); group->pop_front(); } irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this); group->push_back(a); } } /* add a client connection to the sockets list */ void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip) { std::string tempnick = ConvToStr(socket) + "-unknown"; user_hash::iterator iter = Instance->clientlist.find(tempnick); const char *ipaddr = insp_ntoa(ip); userrec* _new; int j = 0; /* * fix by brain. * as these nicknames are 'RFC impossible', we can be sure nobody is going to be * using one as a registered connection. As they are per fd, we can also safely assume * that we wont have collisions. Therefore, if the nick exists in the list, its only * used by a dead socket, erase the iterator so that the new client may reclaim it. * this was probably the cause of 'server ignores me when i hammer it with reconnects' * issue in earlier alphas/betas */ if (iter != Instance->clientlist.end()) { userrec* goner = iter->second; DELETE(goner); Instance->clientlist.erase(iter); } Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr); _new = new userrec(Instance); Instance->clientlist[tempnick] = _new; _new->fd = socket; strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1); _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName); /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */ strcpy(_new->ident, "unknown"); _new->registered = REG_NONE; _new->signon = Instance->Time() + Instance->Config->dns_timeout; _new->lastping = 1; Instance->Log(DEBUG,"Setting socket addresses"); _new->SetSockAddr(AF_FAMILY, ipaddr, port); Instance->Log(DEBUG,"Socket addresses set."); /* Smarter than your average bear^H^H^H^Hset of strlcpys. */ for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++) _new->dhost[j] = _new->host[j] = *temp; _new->dhost[j] = _new->host[j] = 0; // set the registration timeout for this user unsigned long class_regtimeout = 90; int class_flood = 0; long class_threshold = 5; long class_sqmax = 262144; // 256kb long class_rqmax = 4096; // 4k for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++) { if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true))) { class_regtimeout = (unsigned long)i->registration_timeout; class_flood = i->flood; _new->pingmax = i->pingtime; class_threshold = i->threshold; class_sqmax = i->sendqmax; class_rqmax = i->recvqmax; break; } } _new->nping = Instance->Time() + _new->pingmax + Instance->Config->dns_timeout; _new->timeout = Instance->Time() + class_regtimeout; _new->flood = class_flood; _new->threshold = class_threshold; _new->sendqmax = class_sqmax; _new->recvqmax = class_rqmax; Instance->fd_ref_table[socket] = _new; Instance->local_users.push_back(_new); if (Instance->local_users.size() > Instance->Config->SoftLimit) { userrec::QuitUser(Instance, _new,"No more connections allowed"); return; } if (Instance->local_users.size() >= MAXCLIENTS) { userrec::QuitUser(Instance, _new,"No more connections allowed"); return; } /* * XXX - * this is done as a safety check to keep the file descriptors within range of fd_ref_table. * its a pretty big but for the moment valid assumption: * file descriptors are handed out starting at 0, and are recycled as theyre freed. * therefore if there is ever an fd over 65535, 65536 clients must be connected to the * irc server at once (or the irc server otherwise initiating this many connections, files etc) * which for the time being is a physical impossibility (even the largest networks dont have more * than about 10,000 users on ONE server!) */ if ((unsigned)socket >= MAX_DESCRIPTORS) { userrec::QuitUser(Instance, _new,"Server is full"); return; } char* e = Instance->XLines->matches_exception(ipaddr); if (!e) { char* r = Instance->XLines->matches_zline(ipaddr); if (r) { char reason[MAXBUF]; snprintf(reason,MAXBUF,"Z-Lined: %s",r); userrec::QuitUser(Instance, _new,reason); return; } } if (socket > -1) { if (!Instance->SE->AddFd(socket,true,X_ESTAB_CLIENT)) { userrec::QuitUser(Instance, _new, "Internal error handling connection"); return; } } _new->WriteServ("NOTICE Auth :*** Looking up your hostname..."); } long userrec::GlobalCloneCount() { char u1[1024]; char u2[1024]; long x = 0; for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++) { /* We have to match ip's as strings - we don't know what protocol * a remote user may be using */ if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2))) x++; } return x; } long userrec::LocalCloneCount() { long x = 0; for (std::vector::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++) { userrec* comp = *a; #ifdef IPV6 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */ in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr); in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr); if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr))) x++; #else in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr; in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr; if (s1->s_addr == s2->s_addr) x++; #endif } return x; } void userrec::FullConnect(CullList* Goners) { ServerInstance->stats->statsConnects++; this->idle_lastmsg = ServerInstance->Time(); ConnectClass a = this->GetClass(); if (a.type == CC_DENY) { Goners->AddItem(this,"Unauthorised connection"); return; } if ((*(a.pass.c_str())) && (!this->haspassed)) { Goners->AddItem(this,"Invalid password"); return; } if (this->LocalCloneCount() > a.maxlocal) { Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)"); ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString()); return; } else if (this->GlobalCloneCount() > a.maxglobal) { Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)"); ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString()); return; } char match_against[MAXBUF]; snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host); char* e = ServerInstance->XLines->matches_exception(match_against); if (!e) { char* r = ServerInstance->XLines->matches_gline(match_against); if (r) { char reason[MAXBUF]; snprintf(reason,MAXBUF,"G-Lined: %s",r); Goners->AddItem(this, reason); return; } r = ServerInstance->XLines->matches_kline(match_against); if (r) { char reason[MAXBUF]; snprintf(reason,MAXBUF,"K-Lined: %s",r); Goners->AddItem(this, reason); return; } } this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network); this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host); this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION); this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__); this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str()); // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line... // so i'd better split it :) std::stringstream out(ServerInstance->Config->data005); std::string token = ""; std::string line5 = ""; int token_counter = 0; while (!out.eof()) { out >> token; line5 = line5 + token + " "; token_counter++; if ((token_counter >= 13) || (out.eof() == true)) { this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str()); line5 = ""; token_counter = 0; } } this->ShowMOTD(); /* * fix 3 by brain, move registered = 7 below these so that spurious modes and host * changes dont go out onto the network and produce 'fake direction'. */ FOREACH_MOD(I_OnUserConnect,OnUserConnect(this)); FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this)); this->registered = REG_ALL; ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString()); } /** userrec::UpdateNick() * re-allocates a nick in the user_hash after they change nicknames, * returns a pointer to the new user as it may have moved */ userrec* userrec::UpdateNickHash(const char* New) { //user_hash::iterator newnick; user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick); if (!strcasecmp(this->nick,New)) return oldnick->second; if (oldnick == ServerInstance->clientlist.end()) return NULL; /* doesnt exist */ userrec* olduser = oldnick->second; ServerInstance->clientlist[New] = olduser; ServerInstance->clientlist.erase(oldnick); return ServerInstance->clientlist[New]; } bool userrec::ForceNickChange(const char* newnick) { char nick[MAXBUF]; int MOD_RESULT = 0; *nick = 0; FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick)); if (MOD_RESULT) { ServerInstance->stats->statsCollisions++; return false; } if (ServerInstance->XLines->matches_qline(newnick)) { ServerInstance->stats->statsCollisions++; return false; } if (newnick) { strlcpy(this->nick, newnick, NICKMAX - 1); } if (this->registered == REG_ALL) { const char* pars[1]; pars[0] = nick; std::string cmd = "NICK"; ServerInstance->Parser->CallHandler(cmd, pars, 1, this); } return true; } void userrec::SetSockAddr(int protocol_family, const char* ip, int port) { switch (protocol_family) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { ServerInstance->Log(DEBUG,"Set inet6 protocol address"); sockaddr_in6* sin = new sockaddr_in6; sin->sin6_family = AF_INET6; sin->sin6_port = port; inet_pton(AF_INET6, ip, &sin->sin6_addr); this->ip = (sockaddr*)sin; } break; #endif case AF_INET: { ServerInstance->Log(DEBUG,"Set inet4 protocol address"); sockaddr_in* sin = new sockaddr_in; sin->sin_family = AF_INET; sin->sin_port = port; inet_pton(AF_INET, ip, &sin->sin_addr); this->ip = (sockaddr*)sin; } break; default: ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick); break; } } int userrec::GetPort() { if (this->ip == NULL) return 0; switch (this->GetProtocolFamily()) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { sockaddr_in6* sin = (sockaddr_in6*)this->ip; return sin->sin6_port; } break; #endif case AF_INET: { sockaddr_in* sin = (sockaddr_in*)this->ip; return sin->sin_port; } break; default: ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick); break; } return 0; } int userrec::GetProtocolFamily() { if (this->ip == NULL) return 0; sockaddr_in* sin = (sockaddr_in*)this->ip; return sin->sin_family; } const char* userrec::GetIPString() { static char buf[1024]; static char temp[1024]; if (this->ip == NULL) return ""; switch (this->GetProtocolFamily()) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { sockaddr_in6* sin = (sockaddr_in6*)this->ip; inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf)); /* IP addresses starting with a : on irc are a Bad Thing (tm) */ if (*buf == ':') { strlcpy(&temp[1], buf, sizeof(temp)); *temp = '0'; return temp; } return buf; } break; #endif case AF_INET: { sockaddr_in* sin = (sockaddr_in*)this->ip; inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf)); return buf; } break; default: ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick); break; } return ""; } const char* userrec::GetIPString(char* buf) { static char temp[1024]; if (this->ip == NULL) { *buf = 0; return buf; } switch (this->GetProtocolFamily()) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { sockaddr_in6* sin = (sockaddr_in6*)this->ip; inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf)); /* IP addresses starting with a : on irc are a Bad Thing (tm) */ if (*buf == ':') { strlcpy(&temp[1], buf, sizeof(temp)); *temp = '0'; strlcpy(buf, temp, sizeof(temp)); } return buf; } break; #endif case AF_INET: { sockaddr_in* sin = (sockaddr_in*)this->ip; inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf)); return buf; } break; default: ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick); break; } return ""; } void userrec::Write(std::string text) { if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS)) return; text.append("\r\n"); if (ServerInstance->Config->GetIOHook(this->GetPort())) { try { ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length()); } catch (ModuleException& modexcept) { ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason()); } } else { this->AddWriteBuf(text); } ServerInstance->stats->statsSent += text.length(); } /** Write() */ void userrec::Write(const char *text, ...) { va_list argsPtr; char textbuffer[MAXBUF]; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->Write(std::string(textbuffer)); } void userrec::WriteServ(const std::string& text) { char textbuffer[MAXBUF]; snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str()); this->Write(std::string(textbuffer)); } /** WriteServ() * Same as Write(), except `text' is prefixed with `:server.name '. */ void userrec::WriteServ(const char* text, ...) { va_list argsPtr; char textbuffer[MAXBUF]; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteServ(std::string(textbuffer)); } void userrec::WriteFrom(userrec *user, const std::string &text) { char tb[MAXBUF]; snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str()); this->Write(std::string(tb)); } /* write text from an originating user to originating user */ void userrec::WriteFrom(userrec *user, const char* text, ...) { va_list argsPtr; char textbuffer[MAXBUF]; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteFrom(user, std::string(textbuffer)); } /* write text to an destination user from a source user (e.g. user privmsg) */ void userrec::WriteTo(userrec *dest, const char *data, ...) { char textbuffer[MAXBUF]; va_list argsPtr; va_start(argsPtr, data); vsnprintf(textbuffer, MAXBUF, data, argsPtr); va_end(argsPtr); this->WriteTo(dest, std::string(textbuffer)); } void userrec::WriteTo(userrec *dest, const std::string &data) { dest->WriteFrom(this, data); } void userrec::WriteCommon(const char* text, ...) { char textbuffer[MAXBUF]; va_list argsPtr; if (this->registered != REG_ALL) return; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteCommon(std::string(textbuffer)); } void userrec::WriteCommon(const std::string &text) { bool sent_to_at_least_one = false; if (this->registered != REG_ALL) return; uniq_id++; for (std::vector::const_iterator v = this->chans.begin(); v != this->chans.end(); v++) { ucrec *n = *v; if (n->channel) { CUList *ulist= n->channel->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id)) { already_sent[i->second->fd] = uniq_id; i->second->WriteFrom(this, std::string(text)); sent_to_at_least_one = true; } } } } /* * if the user was not in any channels, no users will receive the text. Make sure the user * receives their OWN message for WriteCommon */ if (!sent_to_at_least_one) { this->WriteFrom(this,std::string(text)); } } /* write a formatted string to all users who share at least one common * channel, NOT including the source user e.g. for use in QUIT */ void userrec::WriteCommonExcept(const char* text, ...) { char textbuffer[MAXBUF]; va_list argsPtr; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteCommonExcept(std::string(textbuffer)); } void userrec::WriteCommonExcept(const std::string &text) { bool quit_munge = true; char oper_quit[MAXBUF]; char textbuffer[MAXBUF]; strlcpy(textbuffer, text.c_str(), MAXBUF); if (this->registered != REG_ALL) return; uniq_id++; /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to * opers and the other line to non-opers, then all this hidebans and hidesplits gunk * can go byebye. */ if (ServerInstance->Config->HideSplits) { char* check = textbuffer + 6; if (!strncasecmp(textbuffer, "QUIT :",6)) { std::stringstream split(check); std::string server_one; std::string server_two; split >> server_one; split >> server_two; if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two))) { strlcpy(oper_quit,textbuffer,MAXQUIT); strlcpy(check,"*.net *.split",MAXQUIT); quit_munge = true; } } } if ((ServerInstance->Config->HideBans) && (!quit_munge)) { if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14))) { char* check = textbuffer + 13; strlcpy(oper_quit,textbuffer,MAXQUIT); *check = 0; // We don't need to strlcpy, we just chop it from the : quit_munge = true; } } for (std::vector::const_iterator v = this->chans.begin(); v != this->chans.end(); v++) { ucrec* n = *v; if (n->channel) { CUList *ulist= n->channel->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if (this != i->second) { if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id)) { already_sent[i->second->fd] = uniq_id; if (quit_munge) i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer)); else i->second->WriteFrom(this, std::string(textbuffer)); } } } } } } void userrec::WriteWallOps(const std::string &text) { /* Does nothing if theyre not opered */ if ((!*this->oper) && (IS_LOCAL(this))) return; std::string wallop = "WALLOPS :"; wallop.append(text); for (std::vector::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++) { userrec* t = *i; if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS])) this->WriteTo(t,wallop); } } void userrec::WriteWallOps(const char* text, ...) { char textbuffer[MAXBUF]; va_list argsPtr; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteWallOps(std::string(textbuffer)); } /* return 0 or 1 depending if users u and u2 share one or more common channels * (used by QUIT, NICK etc which arent channel specific notices) * * The old algorithm in 1.0 for this was relatively inefficient, iterating over * the first users channels then the second users channels within the outer loop, * therefore it was a maximum of x*y iterations (upon returning 0 and checking * all possible iterations). However this new function instead checks against the * channel's userlist in the inner loop which is a std::map * and saves us time as we already know what pointer value we are after. * Don't quote me on the maths as i am not a mathematician or computer scientist, * but i believe this algorithm is now x+(log y) maximum iterations instead. */ bool userrec::SharesChannelWith(userrec *other) { if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL)) return false; /* Outer loop */ for (std::vector::const_iterator i = this->chans.begin(); i != this->chans.end(); i++) { /* Fetch the channel from the user */ ucrec* user_channel = *i; if (user_channel->channel) { /* Eliminate the inner loop (which used to be ~equal in size to the outer loop) * by replacing it with a map::find which *should* be more efficient */ if (user_channel->channel->HasUser(other)) return true; } } return false; } int userrec::CountChannels() { int z = 0; for (std::vector::const_iterator i = this->chans.begin(); i != this->chans.end(); i++) if ((*i)->channel) z++; return z; } bool userrec::ChangeName(const char* gecos) { if (IS_LOCAL(this)) { int MOD_RESULT = 0; FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos)); if (MOD_RESULT) return false; FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos)); } strlcpy(this->fullname,gecos,MAXGECOS+1); return true; } bool userrec::ChangeDisplayedHost(const char* host) { if (IS_LOCAL(this)) { int MOD_RESULT = 0; FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host)); if (MOD_RESULT) return false; FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host)); } strlcpy(this->dhost,host,63); if (IS_LOCAL(this)) this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost); return true; } void userrec::NoticeAll(char* text, ...) { char textbuffer[MAXBUF]; char formatbuffer[MAXBUF]; va_list argsPtr; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer); for (std::vector::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++) { userrec* t = *i; t->WriteFrom(this, std::string(formatbuffer)); } } std::string userrec::ChannelList(userrec* source) { std::string list; for (std::vector::const_iterator i = this->chans.begin(); i != this->chans.end(); i++) { ucrec* rec = *i; if(rec->channel && rec->channel->name) { /* If the target is the same as the sender, let them see all their channels. * If the channel is NOT private/secret OR the user shares a common channel * If the user is an oper, and the option is set. */ if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source)))) { list.append(rec->channel->GetStatusChar(this)).append(rec->channel->name).append(" "); } } } return list; } void userrec::SplitChanList(userrec* dest, const std::string &cl) { std::string line; std::ostringstream prefix; std::string::size_type start, pos, length; prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :"; line = prefix.str(); for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1) { length = (pos == std::string::npos) ? cl.length() : pos; if (line.length() + length - start > 510) { this->Write(line); line = prefix.str(); } if(pos == std::string::npos) { line.append(cl.substr(start, length - start)); break; } else { line.append(cl.substr(start, length - start + 1)); } } if (line.length()) { this->Write(line); } } /* looks up a users password for their connection class (/ tags) * NOTE: If the or tag specifies an ip, and this user resolves, * then their ip will be taken as 'priority' anyway, so for example, * will match joe!bloggs@localhost */ ConnectClass& userrec::GetClass() { for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++) { if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str()))) return *i; } return *(ServerInstance->Config->Classes.begin()); } void userrec::PurgeEmptyChannels() { std::vector to_delete; // firstly decrement the count on each channel for (std::vector::iterator f = this->chans.begin(); f != this->chans.end(); f++) { ucrec* uc = *f; if (uc->channel) { if (uc->channel->DelUser(this) == 0) { /* No users left in here, mark it for deletion */ to_delete.push_back(uc->channel); uc->channel = NULL; } } } for (std::vector::iterator n = to_delete.begin(); n != to_delete.end(); n++) { chanrec* thischan = *n; chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name); if (i2 != ServerInstance->chanlist.end()) { FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second)); DELETE(i2->second); ServerInstance->chanlist.erase(i2); } } this->UnOper(); } void userrec::ShowMOTD() { if (!ServerInstance->Config->MOTD.size()) { this->WriteServ("422 %s :Message of the day file is missing.",this->nick); return; } this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName); for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++) this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str()); this->WriteServ("376 %s :End of message of the day.", this->nick); } void userrec::ShowRULES() { if (!ServerInstance->Config->RULES.size()) { this->WriteServ("NOTICE %s :Rules file is missing.",this->nick); return; } this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName); for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++) this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str()); this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName); }