X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fusers.cpp;h=d7671de3c8a5a6496cdb26ec1aaebb145a6ba908;hb=2620d1258c6a2c249b9503a7c4a764e26a2da0f3;hp=250586f1dda76504700f0d4b322bd1b4a413c9bc;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/users.cpp b/src/users.cpp index 250586f1d..d7671de3c 100644 --- a/src/users.cpp +++ b/src/users.cpp @@ -1 +1,1772 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include "configreader.h" #include "channels.h" #include "users.h" #include #include "socketengine.h" #include "wildcard.h" #include "xline.h" #include "commands/cmd_whowas.h" static unsigned long already_sent[MAX_DESCRIPTORS] = {0}; /* XXX: Used for speeding up WriteCommon operations */ unsigned long uniq_id = 0; bool InitTypes(ServerConfig* conf, const char* tag) { if (conf->opertypes.size()) { for (opertype_t::iterator n = conf->opertypes.begin(); n != conf->opertypes.end(); n++) { if (n->second) delete[] n->second; } } conf->opertypes.clear(); return true; } bool InitClasses(ServerConfig* conf, const char* tag) { if (conf->operclass.size()) { for (operclass_t::iterator n = conf->operclass.begin(); n != conf->operclass.end(); n++) { if (n->second) delete[] n->second; } } conf->operclass.clear(); return true; } bool DoType(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types) { const char* TypeName = values[0].GetString(); const char* Classes = values[1].GetString(); conf->opertypes[TypeName] = strnewdup(Classes); return true; } bool DoClass(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types) { const char* ClassName = values[0].GetString(); const char* CommandList = values[1].GetString(); conf->operclass[ClassName] = strnewdup(CommandList); return true; } bool DoneClassesAndTypes(ServerConfig* conf, const char* tag) { return true; } std::string userrec::ProcessNoticeMasks(const char *sm) { bool adding = true, oldadding = false; const char *c = sm; std::string output; while (c && *c) { switch (*c) { case '+': adding = true; break; case '-': adding = false; break; case '*': for (unsigned char d = 'A'; d <= 'z'; d++) { if (ServerInstance->SNO->IsEnabled(d)) { if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding)) { if ((oldadding != adding) || (!output.length())) output += (adding ? '+' : '-'); this->SetNoticeMask(d, adding); output += d; } } oldadding = adding; } break; default: if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c))) { if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding)) { if ((oldadding != adding) || (!output.length())) output += (adding ? '+' : '-'); this->SetNoticeMask(*c, adding); output += *c; } } oldadding = adding; break; } *c++; } return output; } void userrec::StartDNSLookup() { try { bool cached; const char* ip = this->GetIPString(); /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */ if (!strncmp(ip, "0::ffff:", 8)) res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached); else res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached); this->ServerInstance->AddResolver(res_reverse, cached); } catch (CoreException& e) { ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason()); } } UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, QueryType qt, bool &cache) : Resolver(Instance, to_resolve, qt, cache), bound_user(user) { this->fwd = (qt == DNS_QUERY_A || qt == DNS_QUERY_AAAA); this->bound_fd = user->GetFd(); } void UserResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) { if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)) { this->bound_user->stored_host = result; try { /* Check we didnt time out */ if (this->bound_user->registered != REG_ALL) { bool cached; #ifdef IPV6 if (this->bound_user->GetProtocolFamily() == AF_INET6) { /* IPV6 forward lookup (with possibility of 4in6) */ const char* ip = this->bound_user->GetIPString(); bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, (!strncmp(ip, "0::ffff:", 8) ? DNS_QUERY_A : DNS_QUERY_AAAA), cached); } else /* IPV4 lookup (mixed protocol mode) */ #endif /* IPV4 lookup (ipv4 only mode) */ bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, DNS_QUERY_A, cached); this->ServerInstance->AddResolver(bound_user->res_forward, cached); } } catch (CoreException& e) { ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason()); } } else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)) { /* Both lookups completed */ std::string result2("0::ffff:"); result2.append(result); if (this->bound_user->GetIPString() == result || this->bound_user->GetIPString() == result2) { std::string hostname = this->bound_user->stored_host; if (hostname.length() < 65) { /* Check we didnt time out */ if ((this->bound_user->registered != REG_ALL) && (!this->bound_user->dns_done)) { /* Hostnames starting with : are not a good thing (tm) */ if (*(hostname.c_str()) == ':') hostname.insert(0, "0"); this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)%s", hostname.c_str(), (cached ? " -- cached" : "")); this->bound_user->dns_done = true; strlcpy(this->bound_user->dhost, hostname.c_str(),64); strlcpy(this->bound_user->host, hostname.c_str(),64); /* Invalidate cache */ this->bound_user->InvalidateCache(); } } else { if (!this->bound_user->dns_done) { 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()); this->bound_user->dns_done = true; } } } else { if (!this->bound_user->dns_done) { 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()); this->bound_user->dns_done = true; } } } } void UserResolver::OnError(ResolverError e, const std::string &errormessage) { if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user) { /* Since dns timeout is implemented outside of the resolver, this was a race condition that could result in this message being sent *after* * the user was fully connected. This check fixes that issue - Special */ if (!this->bound_user->dns_done) { /* Error message here */ this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname: %s; using your IP address (%s) instead.", errormessage.c_str(), 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; } void userrec::DecrementModes() { for (int n = 0; n < 64; n++) { if (modes[n]) { ModeHandler* mh = ServerInstance->Modes->FindMode(n+65, MODETYPE_USER); if (mh) mh->ChangeCount(-1); } } } userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance) { // 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(); age = ServerInstance->Time(true); lines_in = lastping = signon = idle_lastmsg = nping = registered = 0; ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0; muted = exempt = haspassed = dns_done = false; fd = -1; recvq.clear(); sendq.clear(); WriteError.clear(); res_forward = res_reverse = NULL; Visibility = NULL; ip = NULL; chans.clear(); invites.clear(); memset(modes,0,sizeof(modes)); memset(snomasks,0,sizeof(snomasks)); /* Invalidate cache */ operquit = cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL; } void userrec::RemoveCloneCounts() { clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString()); if (x != ServerInstance->local_clones.end()) { x->second--; if (!x->second) { ServerInstance->local_clones.erase(x); } } clonemap::iterator y = ServerInstance->global_clones.find(this->GetIPString()); if (y != ServerInstance->global_clones.end()) { y->second--; if (!y->second) { ServerInstance->global_clones.erase(y); } } } userrec::~userrec() { this->InvalidateCache(); this->DecrementModes(); if (operquit) free(operquit); if (ip) { this->RemoveCloneCounts(); if (this->GetProtocolFamily() == AF_INET) { delete (sockaddr_in*)ip; } #ifdef SUPPORT_IP6LINKS else { delete (sockaddr_in6*)ip; } #endif } } char* userrec::MakeHost() { if (this->cached_makehost) return this->cached_makehost; char nhost[MAXBUF]; /* 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; this->cached_makehost = strdup(nhost); return this->cached_makehost; } char* userrec::MakeHostIP() { if (this->cached_hostip) return this->cached_hostip; char ihost[MAXBUF]; /* This is much faster than snprintf */ char* t = ihost; for(char* n = ident; *n; n++) *t++ = *n; *t++ = '@'; for(const char* n = this->GetIPString(); *n; n++) *t++ = *n; *t = 0; this->cached_hostip = strdup(ihost); return this->cached_hostip; } void userrec::CloseSocket() { shutdown(this->fd,2); close(this->fd); } char* userrec::GetFullHost() { if (this->cached_fullhost) return this->cached_fullhost; 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; this->cached_fullhost = strdup(result); return this->cached_fullhost; } 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 (IS_LOCAL(this)) { #ifndef WIN32 return read(this->fd, buffer, size); #else return recv(this->fd, (char*)buffer, size, 0); #endif } else return 0; } char* userrec::GetFullRealHost() { if (this->cached_fullrealhost) return this->cached_fullrealhost; 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; this->cached_fullrealhost = strdup(fresult); return this->cached_fullrealhost; } bool userrec::IsInvited(const irc::string &channel) { for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++) { if (channel == *i) { return true; } } return false; } InvitedList* userrec::GetInviteList() { return &invites; } void userrec::InviteTo(const irc::string &channel) { invites.push_back(channel); } void userrec::RemoveInvite(const irc::string &channel) { for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++) { if (channel == *i) { 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 (IS_OPER(this)) { opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper); if (iter_opertype != ServerInstance->Config->opertypes.end()) { char* Classes = strdup(iter_opertype->second); char* myclass = strtok_r(Classes," ",&savept); while (myclass) { operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass); if (iter_operclass != ServerInstance->Config->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; } /** NOTE: We cannot pass a const reference to this method. * The string is changed by the workings of the method, * so that if we pass const ref, we end up copying it to * something we can change anyway. Makes sense to just let * the compiler do that copy for us. */ bool userrec::AddBuffer(std::string a) { try { 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; } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()"); return false; } } bool userrec::BufferIsReady() { return (recvq.find('\n') != std::string::npos); } void userrec::ClearBuffer() { recvq.clear(); } std::string userrec::GetBuffer() { try { 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. */ std::string::iterator t = recvq.begin(); while (t != recvq.end() && (*t == '\r' || *t == '\n')) { recvq.erase(t); t = 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 ""; } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()"); 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; } try { if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */ sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */ else sendq.append(data); } catch (...) { this->SetWriteError("SendQ exceeded"); ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick); } } // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it) void userrec::FlushWriteBuf() { try { if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError())) { sendq.clear(); } if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER)) { int old_sendq_length = sendq.length(); #ifndef WIN32 int n_sent = write(this->fd, this->sendq.data(), this->sendq.length()); #else int n_sent = send(this->fd, (const char*)this->sendq.data(), this->sendq.length(), 0); #endif if (n_sent == -1) { if (errno == EAGAIN) { /* The socket buffer is full. This isnt fatal, * try again later. */ this->ServerInstance->SE->WantWrite(this); } else { /* Fatal error, set write error and bail */ this->SetWriteError(strerror(errno)); return; } } else { /* advance the queue */ if (n_sent) this->sendq = this->sendq.substr(n_sent); /* update the user's stats counters */ this->bytes_out += n_sent; this->cmds_out++; if (n_sent != old_sendq_length) this->ServerInstance->SE->WantWrite(this); } } } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()"); } if (this->sendq.empty()) { FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this)); } } void userrec::SetWriteError(const std::string &error) { try { // don't try to set the error twice, its already set take the first string. if (this->WriteError.empty()) this->WriteError = error; } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()"); } } const char* userrec::GetWriteError() { return this->WriteError.c_str(); } void userrec::Oper(const std::string &opertype) { try { 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)); } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::Oper()"); } } void userrec::UnOper() { try { if (IS_OPER(this)) { // unset their oper type (what IS_OPER checks), and remove +o *this->oper = 0; this->modes[UM_OPERATOR] = 0; // remove them from the opers list. for (std::vector::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++) { if (*a == this) { ServerInstance->all_opers.erase(a); return; } } } } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()"); } } void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason, const char* operreason) { user->muted = true; Instance->GlobalCulls.AddItem(user, quitreason.c_str(), operreason); } /* adds or updates an entry in the whowas list */ void userrec::AddToWhoWas() { command_t* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS"); if (whowas_command) { std::deque params; params.push_back(this); whowas_command->HandleInternal(WHOWAS_ADD, params); } } /* add a client connection to the sockets list */ void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, int socketfamily, sockaddr* ip) { std::string tempnick = ConvToStr(socket) + "-unknown"; user_hash::iterator iter = Instance->clientlist->find(tempnick); char ipaddr[MAXBUF]; #ifdef IPV6 if (socketfamily == AF_INET6) inet_ntop(AF_INET6, &((const sockaddr_in6*)ip)->sin6_addr, ipaddr, sizeof(ipaddr)); else #endif inet_ntop(AF_INET, &((const sockaddr_in*)ip)->sin_addr, ipaddr, sizeof(ipaddr)); userrec* New; int j = 0; Instance->unregistered_count++; /* * 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); } 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; New->SetSockAddr(socketfamily, ipaddr, port); /* 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; Instance->AddLocalClone(New); Instance->AddGlobalClone(New); /* * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved. * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t */ ConnectClass* i = New->GetClass(); if (!i) { userrec::QuitUser(Instance, New, "Access denied by configuration"); return; } New->CheckClass(); New->pingmax = i->GetPingTime(); New->nping = Instance->Time() + i->GetPingTime() + Instance->Config->dns_timeout; New->timeout = Instance->Time() + i->GetRegTimeout(); New->flood = i->GetFlood(); New->threshold = i->GetThreshold(); New->sendqmax = i->GetSendqMax(); New->recvqmax = i->GetRecvqMax(); Instance->local_users.push_back(New); if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS)) { Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit); 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!) */ #ifndef WINDOWS if ((unsigned int)socket >= MAX_DESCRIPTORS) { userrec::QuitUser(Instance, New, "Server is full"); return; } #endif New->exempt = (Instance->XLines->matches_exception(New) != NULL); if (!New->exempt) { ZLine* r = Instance->XLines->matches_zline(ipaddr); if (r) { char reason[MAXBUF]; if (*Instance->Config->MoronBanner) New->WriteServ("NOTICE %s :*** %s", New->nick, Instance->Config->MoronBanner); snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason); userrec::QuitUser(Instance, New, reason); return; } } if (socket > -1) { if (!Instance->SE->AddFd(New)) { userrec::QuitUser(Instance, New, "Internal error handling connection"); return; } } /* NOTE: even if dns lookups are *off*, we still need to display this. * BOPM and other stuff requires it. */ New->WriteServ("NOTICE Auth :*** Looking up your hostname..."); } unsigned long userrec::GlobalCloneCount() { clonemap::iterator x = ServerInstance->global_clones.find(this->GetIPString()); if (x != ServerInstance->global_clones.end()) return x->second; else return 0; } unsigned long userrec::LocalCloneCount() { clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString()); if (x != ServerInstance->local_clones.end()) return x->second; else return 0; } /* * Check class restrictions */ void userrec::CheckClass() { ConnectClass* a = this->GetClass(); if ((!a) || (a->GetType() == CC_DENY)) { userrec::QuitUser(ServerInstance, this, "Unauthorised connection"); return; } else if ((a->GetMaxLocal()) && (this->LocalCloneCount() > a->GetMaxLocal())) { userrec::QuitUser(ServerInstance, 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->GetMaxLocal(), this->GetIPString()); return; } else if ((a->GetMaxGlobal()) && (this->GlobalCloneCount() > a->GetMaxGlobal())) { userrec::QuitUser(ServerInstance, 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->GetMaxGlobal(), this->GetIPString()); return; } } void userrec::FullConnect() { ServerInstance->stats->statsConnects++; this->idle_lastmsg = ServerInstance->Time(); /* * You may be thinking "wtf, we checked this in userrec::AddClient!" - and yes, we did, BUT. * At the time AddClient is called, we don't have a resolved host, by here we probably do - which * may put the user into a totally seperate class with different restrictions! so we *must* check again. * Don't remove this! -- w00t */ this->CheckClass(); /* Check the password, if one is required by the user's connect class. * This CANNOT be in CheckClass(), because that is called prior to PASS as well! */ if ((!this->GetClass()->GetPass().empty()) && (!this->haspassed)) { userrec::QuitUser(ServerInstance, this, "Invalid password"); return; } if (!this->exempt) { GLine* r = ServerInstance->XLines->matches_gline(this); if (r) { this->muted = true; char reason[MAXBUF]; if (*ServerInstance->Config->MoronBanner) this->WriteServ("NOTICE %s :*** %s", this->nick, ServerInstance->Config->MoronBanner); snprintf(reason,MAXBUF,"G-Lined: %s",r->reason); ServerInstance->GlobalCulls.AddItem(this, reason); return; } KLine* n = ServerInstance->XLines->matches_kline(this); if (n) { this->muted = true; char reason[MAXBUF]; if (*ServerInstance->Config->MoronBanner) this->WriteServ("NOTICE %s :*** %s", this, ServerInstance->Config->MoronBanner); snprintf(reason,MAXBUF,"K-Lined: %s",n->reason); ServerInstance->GlobalCulls.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()); ServerInstance->Config->Send005(this); this->ShowMOTD(); /* Now registered */ if (ServerInstance->unregistered_count) ServerInstance->unregistered_count--; /* Trigger LUSERS output, give modules a chance too */ int MOD_RESULT = 0; FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS")); if (!MOD_RESULT) ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this); /* * 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)); this->registered = REG_ALL; FOREACH_MOD(I_OnPostConnect,OnPostConnect(this)); ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString(), this->fullname); } /** 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) { try { //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 olduser; } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()"); return NULL; } } void userrec::InvalidateCache() { /* Invalidate cache */ if (cached_fullhost) free(cached_fullhost); if (cached_hostip) free(cached_hostip); if (cached_makehost) free(cached_makehost); if (cached_fullrealhost) free(cached_fullrealhost); cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL; } bool userrec::ForceNickChange(const char* newnick) { try { int MOD_RESULT = 0; this->InvalidateCache(); 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 (this->registered == REG_ALL) { return (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS); } return false; } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()"); return false; } } void userrec::SetSockAddr(int protocol_family, const char* ip, int port) { switch (protocol_family) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { 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: { 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: 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]; if (this->ip == NULL) return ""; switch (this->GetProtocolFamily()) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { static char temp[1024]; 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) - 1); *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: break; } return ""; } const char* userrec::GetIPString(char* buf) { if (this->ip == NULL) { *buf = 0; return buf; } switch (this->GetProtocolFamily()) { #ifdef SUPPORT_IP6LINKS case AF_INET6: { static char temp[1024]; 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) - 1); *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: break; } return ""; } /** NOTE: We cannot pass a const reference to this method. * The string is changed by the workings of the method, * so that if we pass const ref, we end up copying it to * something we can change anyway. Makes sense to just let * the compiler do that copy for us. */ void userrec::Write(std::string text) { #ifdef WINDOWS if ((this->fd < 0) || (this->m_internalFd > MAX_DESCRIPTORS)) #else if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS)) #endif return; try { /* ServerInstance->Log(DEBUG,"C[%d] <- %s", this->GetFd(), text.c_str()); * WARNING: The above debug line is VERY loud, do NOT * enable it till we have a good way of filtering it * out of the logs (e.g. 1.2 would be good). */ text.append("\r\n"); } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append"); return; } if (ServerInstance->Config->GetIOHook(this->GetPort())) { try { /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to * implement their own buffering mechanisms */ ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length()); } catch (CoreException& modexcept) { ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); } } else { this->AddWriteBuf(text); } ServerInstance->stats->statsSent += text.length(); this->ServerInstance->SE->WantWrite(this); } /** 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) { try { bool sent_to_at_least_one = false; char tb[MAXBUF]; if (this->registered != REG_ALL) return; uniq_id++; /* We dont want to be doing this n times, just once */ snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str()); std::string out = tb; for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++) { CUList* ulist = v->first->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id)) { already_sent[i->first->fd] = uniq_id; i->first->Write(out); 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->Write(std::string(tb)); } } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()"); } } /* 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::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text) { char tb1[MAXBUF]; char tb2[MAXBUF]; if (this->registered != REG_ALL) return; uniq_id++; snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str()); snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str()); std::string out1 = tb1; std::string out2 = tb2; for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++) { CUList *ulist = v->first->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if (this != i->first) { if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id)) { already_sent[i->first->fd] = uniq_id; i->first->Write(IS_OPER(i->first) ? out2 : out1); } } } } } void userrec::WriteCommonExcept(const std::string &text) { char tb1[MAXBUF]; std::string out1; if (this->registered != REG_ALL) return; uniq_id++; snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str()); out1 = tb1; for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++) { CUList *ulist = v->first->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if (this != i->first) { if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id)) { already_sent[i->first->fd] = uniq_id; i->first->Write(out1); } } } } } void userrec::WriteWallOps(const std::string &text) { if (!IS_OPER(this) && 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 (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 (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) { /* 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 (i->first->HasUser(other)) return true; } return false; } bool userrec::ChangeName(const char* gecos) { if (!strcmp(gecos, this->fullname)) return true; 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 (!strcmp(host, this->dhost)) return true; 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)); } if (this->ServerInstance->Config->CycleHosts) this->WriteCommonExcept("QUIT :Changing hosts"); /* Fix by Om: userrec::dhost is 65 long, this was truncating some long hosts */ strlcpy(this->dhost,host,64); this->InvalidateCache(); if (this->ServerInstance->Config->CycleHosts) { for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) { i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name); std::string n = this->ServerInstance->Modes->ModeString(this, i->first); if (n.length() > 0) i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str()); } } if (IS_LOCAL(this)) this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost); return true; } bool userrec::ChangeIdent(const char* newident) { if (!strcmp(newident, this->ident)) return true; if (this->ServerInstance->Config->CycleHosts) this->WriteCommonExcept("%s","QUIT :Changing ident"); strlcpy(this->ident, newident, IDENTMAX+2); this->InvalidateCache(); if (this->ServerInstance->Config->CycleHosts) { for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) { i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name); std::string n = this->ServerInstance->Modes->ModeString(this, i->first); if (n.length() > 0) i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str()); } } return true; } void userrec::SendAll(const char* command, 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,":%s %s $* :%s", this->GetFullHost(), command, textbuffer); std::string fmt = formatbuffer; for (std::vector::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++) { (*i)->Write(fmt); } } std::string userrec::ChannelList(userrec* source) { try { std::string list; for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) { /* 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) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->modes[CM_PRIVATE]) && (!i->first->modes[CM_SECRET])) || (i->first->HasUser(source)))) { list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" "); } } return list; } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()"); return ""; } } void userrec::SplitChanList(userrec* dest, const std::string &cl) { std::string line; std::ostringstream prefix; std::string::size_type start, pos, length; try { prefix << this->nick << " " << dest->nick << " :"; line = prefix.str(); int namelen = strlen(ServerInstance->Config->ServerName) + 6; for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1) { length = (pos == std::string::npos) ? cl.length() : pos; if (line.length() + namelen + length - start > 510) { ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str()); 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()) { ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str()); } } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()"); } } /* 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->GetHost().c_str(),true)) || (match(this->host,i->GetHost().c_str())))) { if (i->GetPort()) { if (this->GetPort() == i->GetPort()) return &(*i); else continue; } else return &(*i); } } return NULL; } void userrec::PurgeEmptyChannels() { std::vector to_delete; // firstly decrement the count on each channel for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++) { f->first->RemoveAllPrefixes(this); if (f->first->DelUser(this) == 0) { /* No users left in here, mark it for deletion */ try { to_delete.push_back(f->first); } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()"); } } } 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->chans.erase(*n); } } 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 (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++) this->WriteServ("372 %s :- %s",this->nick,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 (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++) this->WriteServ("NOTICE %s :%s",this->nick,i->c_str()); this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName); } void userrec::HandleEvent(EventType et, int errornum) { /* WARNING: May delete this user! */ int thisfd = this->GetFd(); try { switch (et) { case EVENT_READ: ServerInstance->ProcessUser(this); break; case EVENT_WRITE: this->FlushWriteBuf(); break; case EVENT_ERROR: /** This should be safe, but dont DARE do anything after it -- Brain */ this->SetWriteError(errornum ? strerror(errornum) : "EOF from client"); break; } } catch (...) { ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted"); } /* If the user has raised an error whilst being processed, quit them now we're safe to */ if ((ServerInstance->SE->GetRef(thisfd) == this)) { if (!WriteError.empty()) { userrec::QuitUser(ServerInstance, this, GetWriteError()); } } } void userrec::SetOperQuit(const std::string &oquit) { if (operquit) return; operquit = strdup(oquit.c_str()); } const char* userrec::GetOperQuit() { return operquit ? operquit : ""; } VisData::VisData() { } VisData::~VisData() { } bool VisData::VisibleTo(userrec* user) { return true; } \ No newline at end of file +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd: (C) 2002-2008 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +/* $Core: libIRCDusers */ + +#include "inspircd.h" +#include +#include "socketengine.h" +#include "wildcard.h" +#include "xline.h" +#include "bancache.h" +#include "commands/cmd_whowas.h" + +static unsigned long already_sent[MAX_DESCRIPTORS] = {0}; + +/* XXX: Used for speeding up WriteCommon operations */ +unsigned long uniq_id = 0; + +std::string User::ProcessNoticeMasks(const char *sm) +{ + bool adding = true, oldadding = false; + const char *c = sm; + std::string output; + + while (c && *c) + { + switch (*c) + { + case '+': + adding = true; + break; + case '-': + adding = false; + break; + case '*': + for (unsigned char d = 'A'; d <= 'z'; d++) + { + if (ServerInstance->SNO->IsEnabled(d)) + { + if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding)) + { + if ((oldadding != adding) || (!output.length())) + output += (adding ? '+' : '-'); + + this->SetNoticeMask(d, adding); + + output += d; + } + } + oldadding = adding; + } + break; + default: + if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c))) + { + if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding)) + { + if ((oldadding != adding) || (!output.length())) + output += (adding ? '+' : '-'); + + this->SetNoticeMask(*c, adding); + + output += *c; + } + } + oldadding = adding; + break; + } + + *c++; + } + + return output; +} + +void User::StartDNSLookup() +{ + try + { + bool cached; + const char* ip = this->GetIPString(); + + /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */ + if (!strncmp(ip, "0::ffff:", 8)) + res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached); + else + res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached); + + this->ServerInstance->AddResolver(res_reverse, cached); + } + catch (CoreException& e) + { + ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason()); + } +} + +bool User::IsNoticeMaskSet(unsigned char sm) +{ + return (snomasks[sm-65]); +} + +void User::SetNoticeMask(unsigned char sm, bool value) +{ + snomasks[sm-65] = value; +} + +const char* User::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 User::IsModeSet(unsigned char m) +{ + return (modes[m-65]); +} + +void User::SetMode(unsigned char m, bool value) +{ + modes[m-65] = value; +} + +const char* User::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; +} + +void User::DecrementModes() +{ + ServerInstance->Log(DEBUG,"DecrementModes()"); + for (unsigned char n = 'A'; n <= 'z'; n++) + { + if (modes[n-65]) + { + ServerInstance->Log(DEBUG,"DecrementModes() found mode %c", n); + ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER); + if (mh) + { + ServerInstance->Log(DEBUG,"Found handler %c and call ChangeCount", n); + mh->ChangeCount(-1); + } + } + } +} + +User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance) +{ + *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0; + server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName); + reset_due = ServerInstance->Time(); + age = ServerInstance->Time(true); + Penalty = 0; + lines_in = lastping = signon = idle_lastmsg = nping = registered = 0; + ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0; + OverPenalty = ExemptFromPenalty = muted = exempt = haspassed = dns_done = false; + fd = -1; + recvq.clear(); + sendq.clear(); + WriteError.clear(); + res_forward = res_reverse = NULL; + Visibility = NULL; + ip = NULL; + MyClass = NULL; + AllowedOperCommands = NULL; + chans.clear(); + invites.clear(); + memset(modes,0,sizeof(modes)); + memset(snomasks,0,sizeof(snomasks)); + /* Invalidate cache */ + operquit = cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL; + + if (uid.empty()) + strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH); + else + strlcpy(uuid, uid.c_str(), UUID_LENGTH); + + ServerInstance->Log(DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote"); + + user_hash::iterator finduuid = Instance->uuidlist->find(uuid); + if (finduuid == Instance->uuidlist->end()) + (*Instance->uuidlist)[uuid] = this; + else + throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor"); +} + +User::~User() +{ + /* NULL for remote users :) */ + if (this->MyClass) + { + this->MyClass->RefCount--; + ServerInstance->Log(DEBUG, "User destructor -- connect refcount now: %u", this->MyClass->RefCount); + } + if (this->AllowedOperCommands) + { + delete AllowedOperCommands; + AllowedOperCommands = NULL; + } + + this->InvalidateCache(); + this->DecrementModes(); + if (operquit) + free(operquit); + if (ip) + { + ServerInstance->Users->RemoveCloneCounts(this); + + if (this->GetProtocolFamily() == AF_INET) + { + delete (sockaddr_in*)ip; + } +#ifdef SUPPORT_IP6LINKS + else + { + delete (sockaddr_in6*)ip; + } +#endif + } + + ServerInstance->uuidlist->erase(uuid); +} + +char* User::MakeHost() +{ + if (this->cached_makehost) + return this->cached_makehost; + + char nhost[MAXBUF]; + /* 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; + + this->cached_makehost = strdup(nhost); + + return this->cached_makehost; +} + +char* User::MakeHostIP() +{ + if (this->cached_hostip) + return this->cached_hostip; + + char ihost[MAXBUF]; + /* This is much faster than snprintf */ + char* t = ihost; + for(char* n = ident; *n; n++) + *t++ = *n; + *t++ = '@'; + for(const char* n = this->GetIPString(); *n; n++) + *t++ = *n; + *t = 0; + + this->cached_hostip = strdup(ihost); + + return this->cached_hostip; +} + +void User::CloseSocket() +{ + ServerInstance->SE->Shutdown(this, 2); + ServerInstance->SE->Close(this); +} + +char* User::GetFullHost() +{ + if (this->cached_fullhost) + return this->cached_fullhost; + + 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; + + this->cached_fullhost = strdup(result); + + return this->cached_fullhost; +} + +char* User::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 User::ReadData(void* buffer, size_t size) +{ + if (IS_LOCAL(this)) + { +#ifndef WIN32 + return read(this->fd, buffer, size); +#else + return recv(this->fd, (char*)buffer, size, 0); +#endif + } + else + return 0; +} + + +char* User::GetFullRealHost() +{ + if (this->cached_fullrealhost) + return this->cached_fullrealhost; + + 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; + + this->cached_fullrealhost = strdup(fresult); + + return this->cached_fullrealhost; +} + +bool User::IsInvited(const irc::string &channel) +{ + for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++) + { + if (channel == *i) + { + return true; + } + } + return false; +} + +InvitedList* User::GetInviteList() +{ + return &invites; +} + +void User::InviteTo(const irc::string &channel) +{ + invites.push_back(channel); +} + +void User::RemoveInvite(const irc::string &channel) +{ + for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++) + { + if (channel == *i) + { + invites.erase(i); + return; + } + } +} + +bool User::HasPermission(const std::string &command) +{ + /* + * 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 (!IS_OPER(this)) + { + return false; + } + + if (!AllowedOperCommands) + return false; + + if (AllowedOperCommands->find(command) != AllowedOperCommands->end()) + return true; + else if (AllowedOperCommands->find("*") != AllowedOperCommands->end()) + return true; + + return false; +} + +/** NOTE: We cannot pass a const reference to this method. + * The string is changed by the workings of the method, + * so that if we pass const ref, we end up copying it to + * something we can change anyway. Makes sense to just let + * the compiler do that copy for us. + */ +bool User::AddBuffer(std::string a) +{ + try + { + 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 (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax())) + { + this->SetWriteError("RecvQ exceeded"); + ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->MyClass->GetRecvqMax()); + return false; + } + + return true; + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::AddBuffer()"); + return false; + } +} + +bool User::BufferIsReady() +{ + return (recvq.find('\n') != std::string::npos); +} + +void User::ClearBuffer() +{ + recvq.clear(); +} + +std::string User::GetBuffer() +{ + try + { + if (recvq.empty()) + 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. + */ + std::string::iterator t = recvq.begin(); + while (t != recvq.end() && (*t == '\r' || *t == '\n')) + { + recvq.erase(t); + t = 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 ""; + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::GetBuffer()"); + return ""; + } +} + +void User::AddWriteBuf(const std::string &data) +{ + if (*this->GetWriteError()) + return; + + if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax())) + { + /* + * 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->MyClass->GetSendqMax()); + return; + } + + try + { + if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */ + sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */ + else + sendq.append(data); + } + catch (...) + { + this->SetWriteError("SendQ exceeded"); + ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick); + } +} + +// send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it) +void User::FlushWriteBuf() +{ + try + { + if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError())) + { + sendq.clear(); + } + if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER)) + { + int old_sendq_length = sendq.length(); + int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0); + + if (n_sent == -1) + { + if (errno == EAGAIN) + { + /* The socket buffer is full. This isnt fatal, + * try again later. + */ + this->ServerInstance->SE->WantWrite(this); + } + else + { + /* Fatal error, set write error and bail + */ + this->SetWriteError(errno ? strerror(errno) : "EOF from client"); + return; + } + } + else + { + /* advance the queue */ + if (n_sent) + this->sendq = this->sendq.substr(n_sent); + /* update the user's stats counters */ + this->bytes_out += n_sent; + this->cmds_out++; + if (n_sent != old_sendq_length) + this->ServerInstance->SE->WantWrite(this); + } + } + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::FlushWriteBuf()"); + } + + if (this->sendq.empty()) + { + FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this)); + } +} + +void User::SetWriteError(const std::string &error) +{ + try + { + // don't try to set the error twice, its already set take the first string. + if (this->WriteError.empty()) + this->WriteError = error; + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::SetWriteError()"); + } +} + +const char* User::GetWriteError() +{ + return this->WriteError.c_str(); +} + +void User::Oper(const std::string &opertype, const std::string &opername) +{ + char* mycmd; + char* savept; + char* savept2; + + try + { + 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); + + opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper); + if (iter_opertype != ServerInstance->Config->opertypes.end()) + { + + if (AllowedOperCommands) + AllowedOperCommands->clear(); + else + AllowedOperCommands = new std::map; + + char* Classes = strdup(iter_opertype->second); + char* myclass = strtok_r(Classes," ",&savept); + while (myclass) + { + operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass); + if (iter_operclass != ServerInstance->Config->operclass.end()) + { + char* CommandList = strdup(iter_operclass->second); + mycmd = strtok_r(CommandList," ",&savept2); + while (mycmd) + { + this->AllowedOperCommands->insert(std::make_pair(mycmd, true)); + mycmd = strtok_r(NULL," ",&savept2); + } + free(CommandList); + } + myclass = strtok_r(NULL," ",&savept); + } + free(Classes); + } + + FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername)); + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::Oper()"); + } +} + +void User::UnOper() +{ + try + { + if (IS_OPER(this)) + { + // unset their oper type (what IS_OPER checks), and remove +o + *this->oper = 0; + this->modes[UM_OPERATOR] = 0; + + // remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 + ServerInstance->all_opers.remove(this); + + if (AllowedOperCommands) + { + delete AllowedOperCommands; + AllowedOperCommands = NULL; + } + } + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::UnOper()"); + } +} + +void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason) +{ + Instance->Log(DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str()); + user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str()); + user->muted = true; + Instance->GlobalCulls.AddItem(user, quitreason.c_str(), operreason); +} + +/* adds or updates an entry in the whowas list */ +void User::AddToWhoWas() +{ + Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS"); + if (whowas_command) + { + std::deque params; + params.push_back(this); + whowas_command->HandleInternal(WHOWAS_ADD, params); + } +} + +/* + * Check class restrictions + */ +void User::CheckClass() +{ + ConnectClass* a = this->MyClass; + + if ((!a) || (a->GetType() == CC_DENY)) + { + User::QuitUser(ServerInstance, this, "Unauthorised connection"); + return; + } + else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal())) + { + User::QuitUser(ServerInstance, 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->GetMaxLocal(), this->GetIPString()); + return; + } + else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal())) + { + User::QuitUser(ServerInstance, 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->GetMaxGlobal(), this->GetIPString()); + return; + } + + this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout; + this->timeout = ServerInstance->Time() + a->GetRegTimeout(); + this->MaxChans = a->GetMaxChans(); +} + +void User::FullConnect() +{ + ServerInstance->stats->statsConnects++; + this->idle_lastmsg = ServerInstance->Time(); + + /* + * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT. + * At the time AddClient is called, we don't have a resolved host, by here we probably do - which + * may put the user into a totally seperate class with different restrictions! so we *must* check again. + * Don't remove this! -- w00t + */ + this->SetClass(); + + /* Check the password, if one is required by the user's connect class. + * This CANNOT be in CheckClass(), because that is called prior to PASS as well! + */ + if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed) + { + User::QuitUser(ServerInstance, this, "Invalid password"); + return; + } + + if (!this->exempt) + { + GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this); + + if (r) + { + this->muted = true; + r->Apply(this); + return; + } + + KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this); + + if (n) + { + this->muted = true; + n->Apply(this); + 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()); + + ServerInstance->Config->Send005(this); + + this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid); + + + this->ShowMOTD(); + + /* Now registered */ + if (ServerInstance->unregistered_count) + ServerInstance->unregistered_count--; + + /* Trigger LUSERS output, give modules a chance too */ + int MOD_RESULT = 0; + FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS")); + if (!MOD_RESULT) + ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this); + + /* + * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff + * for a user that doesn't exist yet. + */ + FOREACH_MOD(I_OnUserConnect,OnUserConnect(this)); + + this->registered = REG_ALL; + + FOREACH_MOD(I_OnPostConnect,OnPostConnect(this)); + + ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString(), this->fullname); + + ServerInstance->Log(DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString()); + ServerInstance->BanCache->AddHit(this->GetIPString(), "", ""); +} + +/** User::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 + */ +User* User::UpdateNickHash(const char* New) +{ + try + { + //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 */ + + User* olduser = oldnick->second; + (*(ServerInstance->clientlist))[New] = olduser; + ServerInstance->clientlist->erase(oldnick); + return olduser; + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::UpdateNickHash()"); + return NULL; + } +} + +void User::InvalidateCache() +{ + /* Invalidate cache */ + if (cached_fullhost) + free(cached_fullhost); + if (cached_hostip) + free(cached_hostip); + if (cached_makehost) + free(cached_makehost); + if (cached_fullrealhost) + free(cached_fullrealhost); + cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL; +} + +bool User::ForceNickChange(const char* newnick) +{ + try + { + int MOD_RESULT = 0; + + this->InvalidateCache(); + + FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick)); + + if (MOD_RESULT) + { + ServerInstance->stats->statsCollisions++; + return false; + } + + if (ServerInstance->XLines->MatchesLine("Q",newnick)) + { + ServerInstance->stats->statsCollisions++; + return false; + } + + if (this->registered == REG_ALL) + { + std::deque dummy; + Command* nickhandler = ServerInstance->Parser->GetHandler("NICK"); + if (nickhandler) + { + nickhandler->HandleInternal(1, dummy); + bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS); + nickhandler->HandleInternal(0, dummy); + return result; + } + } + return false; + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::ForceNickChange()"); + return false; + } +} + +void User::SetSockAddr(int protocol_family, const char* ip, int port) +{ + switch (protocol_family) + { +#ifdef SUPPORT_IP6LINKS + case AF_INET6: + { + 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: + { + 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,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick); + break; + } +} + +int User::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: + break; + } + return 0; +} + +int User::GetProtocolFamily() +{ + if (this->ip == NULL) + return 0; + + sockaddr_in* sin = (sockaddr_in*)this->ip; + return sin->sin_family; +} + +/* + * XXX the duplication here is horrid.. + * do we really need two methods doing essentially the same thing? + */ +const char* User::GetIPString() +{ + static char buf[1024]; + + if (this->ip == NULL) + return ""; + + switch (this->GetProtocolFamily()) + { +#ifdef SUPPORT_IP6LINKS + case AF_INET6: + { + static char temp[1024]; + + 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) - 1); + *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: + break; + } + return ""; +} + +/** NOTE: We cannot pass a const reference to this method. + * The string is changed by the workings of the method, + * so that if we pass const ref, we end up copying it to + * something we can change anyway. Makes sense to just let + * the compiler do that copy for us. + */ +void User::Write(std::string text) +{ + if (!ServerInstance->SE->BoundsCheckFd(this)) + return; + + try + { + /* ServerInstance->Log(DEBUG,"C[%d] O %s", this->GetFd(), text.c_str()); + * WARNING: The above debug line is VERY loud, do NOT + * enable it till we have a good way of filtering it + * out of the logs (e.g. 1.2 would be good). + */ + text.append("\r\n"); + } + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::Write() std::string::append"); + return; + } + + if (ServerInstance->Config->GetIOHook(this->GetPort())) + { + try + { + /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to + * implement their own buffering mechanisms + */ + ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length()); + } + catch (CoreException& modexcept) + { + ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + } + } + else + { + this->AddWriteBuf(text); + } + ServerInstance->stats->statsSent += text.length(); + this->ServerInstance->SE->WantWrite(this); +} + +/** Write() + */ +void User::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 User::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 User::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 User::WriteFrom(User *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 User::WriteFrom(User *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 User::WriteTo(User *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 User::WriteTo(User *dest, const std::string &data) +{ + dest->WriteFrom(this, data); +} + + +void User::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 User::WriteCommon(const std::string &text) +{ + try + { + bool sent_to_at_least_one = false; + char tb[MAXBUF]; + + if (this->registered != REG_ALL) + return; + + uniq_id++; + + /* We dont want to be doing this n times, just once */ + snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str()); + std::string out = tb; + + for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++) + { + CUList* ulist = v->first->GetUsers(); + for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + { + if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id)) + { + already_sent[i->first->fd] = uniq_id; + i->first->Write(out); + 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->Write(std::string(tb)); + } + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::WriteCommon()"); + } +} + + +/* 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 User::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 User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text) +{ + char tb1[MAXBUF]; + char tb2[MAXBUF]; + + if (this->registered != REG_ALL) + return; + + uniq_id++; + snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str()); + snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str()); + std::string out1 = tb1; + std::string out2 = tb2; + + for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++) + { + CUList *ulist = v->first->GetUsers(); + for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + { + if (this != i->first) + { + if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id)) + { + already_sent[i->first->fd] = uniq_id; + i->first->Write(IS_OPER(i->first) ? out2 : out1); + } + } + } + } +} + +void User::WriteCommonExcept(const std::string &text) +{ + char tb1[MAXBUF]; + std::string out1; + + if (this->registered != REG_ALL) + return; + + uniq_id++; + snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str()); + out1 = tb1; + + for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++) + { + CUList *ulist = v->first->GetUsers(); + for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + { + if (this != i->first) + { + if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id)) + { + already_sent[i->first->fd] = uniq_id; + i->first->Write(out1); + } + } + } + } + +} + +void User::WriteWallOps(const std::string &text) +{ + if (!IS_OPER(this) && 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++) + { + User* t = *i; + if (t->IsModeSet('w')) + this->WriteTo(t,wallop); + } +} + +void User::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 User::SharesChannelWith(User *other) +{ + if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL)) + return false; + + /* Outer loop */ + for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) + { + /* 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 (i->first->HasUser(other)) + return true; + } + return false; +} + +bool User::ChangeName(const char* gecos) +{ + if (!strcmp(gecos, this->fullname)) + return true; + + 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 User::ChangeDisplayedHost(const char* host) +{ + if (!strcmp(host, this->dhost)) + return true; + + 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)); + } + if (this->ServerInstance->Config->CycleHosts) + this->WriteCommonExcept("QUIT :Changing hosts"); + + /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */ + strlcpy(this->dhost,host,64); + + this->InvalidateCache(); + + if (this->ServerInstance->Config->CycleHosts) + { + for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) + { + i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name); + std::string n = this->ServerInstance->Modes->ModeString(this, i->first); + if (n.length() > 0) + i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str()); + } + } + + if (IS_LOCAL(this)) + this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost); + + return true; +} + +bool User::ChangeIdent(const char* newident) +{ + if (!strcmp(newident, this->ident)) + return true; + + if (this->ServerInstance->Config->CycleHosts) + this->WriteCommonExcept("%s","QUIT :Changing ident"); + + strlcpy(this->ident, newident, IDENTMAX+2); + + this->InvalidateCache(); + + if (this->ServerInstance->Config->CycleHosts) + { + for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) + { + i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name); + std::string n = this->ServerInstance->Modes->ModeString(this, i->first); + if (n.length() > 0) + i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str()); + } + } + + return true; +} + +void User::SendAll(const char* command, 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,":%s %s $* :%s", this->GetFullHost(), command, textbuffer); + std::string fmt = formatbuffer; + + for (std::vector::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++) + { + (*i)->Write(fmt); + } +} + + +std::string User::ChannelList(User* source) +{ + try + { + std::string list; + for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++) + { + /* 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) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source)))) + { + list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" "); + } + } + return list; + } + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::ChannelList()"); + return ""; + } +} + +void User::SplitChanList(User* dest, const std::string &cl) +{ + std::string line; + std::ostringstream prefix; + std::string::size_type start, pos, length; + + try + { + prefix << this->nick << " " << dest->nick << " :"; + line = prefix.str(); + int namelen = strlen(ServerInstance->Config->ServerName) + 6; + + for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1) + { + length = (pos == std::string::npos) ? cl.length() : pos; + + if (line.length() + namelen + length - start > 510) + { + ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str()); + 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()) + { + ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str()); + } + } + + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::SplitChanList()"); + } +} + +unsigned int User::GetMaxChans() +{ + return this->MaxChans; +} + + +/* + * Sets a user's connection class. + * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc. + * 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* User::SetClass(const std::string &explicit_name) +{ + ConnectClass *found = NULL; + + if (!IS_LOCAL(this)) + return NULL; + + if (!explicit_name.empty()) + { + for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++) + { + ConnectClass* c = *i; + + if (explicit_name == c->GetName() && !c->GetDisabled()) + { + found = c; + } + } + } + else + { + for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++) + { + ConnectClass* c = *i; + + if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str())))) + { + if (c->GetPort()) + { + if (this->GetPort() == c->GetPort() && !c->GetDisabled()) + { + found = c; + } + else + continue; + } + else + { + if (!c->GetDisabled()) + found = c; + } + } + } + } + + /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */ + if (found) + { + /* deny change if change will take class over the limit */ + if (found->limit && (found->RefCount + 1 >= found->limit)) + { + ServerInstance->Log(DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit); + return this->MyClass; + } + + /* should always be valid, but just in case .. */ + if (this->MyClass) + { + if (found == this->MyClass) // no point changing this shit :P + return this->MyClass; + this->MyClass->RefCount--; + ServerInstance->Log(DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount); + } + + this->MyClass = found; + this->MyClass->RefCount++; + ServerInstance->Log(DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount); + } + + return this->MyClass; +} + +/* 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* User::GetClass() +{ + return this->MyClass; +} + +void User::PurgeEmptyChannels() +{ + std::vector to_delete; + + // firstly decrement the count on each channel + for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++) + { + f->first->RemoveAllPrefixes(this); + if (f->first->DelUser(this) == 0) + { + /* No users left in here, mark it for deletion */ + try + { + to_delete.push_back(f->first); + } + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()"); + } + } + } + + for (std::vector::iterator n = to_delete.begin(); n != to_delete.end(); n++) + { + Channel* 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->chans.erase(*n); + } + } + + this->UnOper(); +} + +void User::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 (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++) + this->WriteServ("372 %s :- %s",this->nick,i->c_str()); + + this->WriteServ("376 %s :End of message of the day.", this->nick); +} + +void User::ShowRULES() +{ + if (!ServerInstance->Config->RULES.size()) + { + this->WriteServ("434 %s :RULES File is missing",this->nick); + return; + } + + this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName); + + for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++) + this->WriteServ("232 %s :- %s",this->nick,i->c_str()); + + this->WriteServ("309 %s :End of RULES command.",this->nick); +} + +void User::HandleEvent(EventType et, int errornum) +{ + /* WARNING: May delete this user! */ + int thisfd = this->GetFd(); + + try + { + switch (et) + { + case EVENT_READ: + ServerInstance->ProcessUser(this); + break; + case EVENT_WRITE: + this->FlushWriteBuf(); + break; + case EVENT_ERROR: + /** This should be safe, but dont DARE do anything after it -- Brain */ + this->SetWriteError(errornum ? strerror(errornum) : "EOF from client"); + break; + } + } + catch (...) + { + ServerInstance->Log(DEBUG,"Exception in User::HandleEvent intercepted"); + } + + /* If the user has raised an error whilst being processed, quit them now we're safe to */ + if ((ServerInstance->SE->GetRef(thisfd) == this)) + { + if (!WriteError.empty()) + { + User::QuitUser(ServerInstance, this, GetWriteError()); + } + } +} + +void User::SetOperQuit(const std::string &oquit) +{ + if (operquit) + return; + + operquit = strdup(oquit.c_str()); +} + +const char* User::GetOperQuit() +{ + return operquit ? operquit : ""; +} + +void User::IncreasePenalty(int increase) +{ + this->Penalty += increase; +} + +void User::DecreasePenalty(int decrease) +{ + this->Penalty -= decrease; +} + +VisData::VisData() +{ +} + +VisData::~VisData() +{ +} + +bool VisData::VisibleTo(User* user) +{ + return true; +} +