X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Ftreesocket1.cpp;h=190c5dc15891ac22c2d708532fff6c437ec398be;hb=f6b33a8facd6ca200292786c1061782c41cdd278;hp=2a50b50e5f5d11f39c10cac0a312bcaef6d0a65a;hpb=f57b33efe868200133a9839a6f1513a99cf9ab58;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/treesocket1.cpp b/src/modules/m_spanningtree/treesocket1.cpp index 2a50b50e5..190c5dc15 100644 --- a/src/modules/m_spanningtree/treesocket1.cpp +++ b/src/modules/m_spanningtree/treesocket1.cpp @@ -1,615 +1,230 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007-2008 Robin Burchell + * Copyright (C) 2007 Craig Edwards + * Copyright (C) 2007 Dennis Friis * - * This program is free but copyrighted software; see - * the file COPYING for details. + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. * - * --------------------------------------------------- + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ -#include "inspircd.h" -#include "commands/cmd_whois.h" -#include "commands/cmd_stats.h" -#include "socket.h" -#include "wildcard.h" -#include "xline.h" -#include "transport.h" -#include "m_hash.h" -#include "socketengine.h" - -#include "m_spanningtree/main.h" -#include "m_spanningtree/utils.h" -#include "m_spanningtree/treeserver.h" -#include "m_spanningtree/link.h" -#include "m_spanningtree/treesocket.h" -#include "m_spanningtree/resolvers.h" -#include "m_spanningtree/handshaketimer.h" - -/* $ModDep: m_spanningtree/timesynctimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h m_hash.h */ - -/** Because most of the I/O gubbins are encapsulated within - * BufferedSocket, we just call the superclass constructor for - * most of the action, and append a few of our own values - * to it. +#include "inspircd.h" +#include "iohook.h" + +#include "main.h" +#include "modules/server.h" +#include "utils.h" +#include "treeserver.h" +#include "link.h" +#include "treesocket.h" +#include "commands.h" + +/** Constructor for outgoing connections. + * Because most of the I/O gubbins are encapsulated within + * BufferedSocket, we just call DoConnect() for most of the action, + * and only do minor initialization tasks ourselves. */ -TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, Module* HookMod) - : BufferedSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod) -{ - myhost = host; - this->LinkState = LISTENER; - theirchallenge.clear(); - ourchallenge.clear(); - if (listening && Hook) - BufferedSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); -} +TreeSocket::TreeSocket(Link* link, Autoconnect* myac, const irc::sockets::sockaddrs& dest) + : linkID(link->Name), LinkState(CONNECTING), MyRoot(NULL), proto_version(0) + , burstsent(false), age(ServerInstance->Time()) +{ + capab = new CapabData; + capab->link = link; + capab->ac = myac; + capab->capab_phase = 0; + + irc::sockets::sockaddrs bind; + memset(&bind, 0, sizeof(bind)); + if (!link->Bind.empty() && (dest.family() == AF_INET || dest.family() == AF_INET6)) + { + if (!irc::sockets::aptosa(link->Bind, 0, bind)) + { + state = I_ERROR; + SetError("Bind address '" + link->Bind + "' is not a valid IPv4 or IPv6 address"); + TreeSocket::OnError(I_ERR_BIND); + return; + } + else if (bind.family() != dest.family()) + { + state = I_ERROR; + SetError("Bind address '" + bind.addr() + "' is not the same address family as destination address '" + dest.addr() + "'"); + TreeSocket::OnError(I_ERR_BIND); + return; + } + } -TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, const std::string &ServerName, const std::string &bindto, Module* HookMod) - : BufferedSocket(SI, host, port, listening, maxtime, bindto), Utils(Util), Hook(HookMod) -{ - myhost = ServerName; - theirchallenge.clear(); - ourchallenge.clear(); - this->LinkState = CONNECTING; - if (Hook) - BufferedSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); + DoConnect(dest, bind, link->Timeout); + Utils->timeoutlist[this] = std::pair(linkID, link->Timeout); + SendCapabilities(1); } -/** When a listening socket gives us a new file descriptor, - * we must associate it with a socket without creating a new - * connection. This constructor is used for this purpose. +/** Constructor for incoming connections */ -TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, char* ip, Module* HookMod) - : BufferedSocket(SI, newfd, ip), Utils(Util), Hook(HookMod) -{ - this->LinkState = WAIT_AUTH_1; - theirchallenge.clear(); - ourchallenge.clear(); - sentcapab = false; - /* If we have a transport module hooked to the parent, hook the same module to this - * socket, and set a timer waiting for handshake before we send CAPAB etc. - */ - if (Hook) - BufferedSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); - - Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(Utils->LinkBlocks[0]), this->Utils, 1)); -} - -ServerState TreeSocket::GetLinkState() +TreeSocket::TreeSocket(int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) + : BufferedSocket(newfd) + , linkID("inbound from " + client->addr()), LinkState(WAIT_AUTH_1), MyRoot(NULL), proto_version(0) + , burstsent(false), age(ServerInstance->Time()) { - return this->LinkState; -} + capab = new CapabData; + capab->capab_phase = 0; -Module* TreeSocket::GetHook() -{ - return this->Hook; -} + for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i) + { + ListenSocket::IOHookProvRef& iohookprovref = *i; + if (!iohookprovref) + continue; -TreeSocket::~TreeSocket() -{ - if (Hook) - BufferedSocketUnhookRequest(this, (Module*)Utils->Creator, Hook).Send(); -} + iohookprovref->OnAccept(this, client, server); + // IOHook could have encountered a fatal error, e.g. if the TLS ClientHello was already in the queue and there was no common TLS version + if (!getError().empty()) + { + TreeSocket::OnError(I_ERR_OTHER); + return; + } + } -const std::string& TreeSocket::GetOurChallenge() -{ - return this->ourchallenge; -} + SendCapabilities(1); -void TreeSocket::SetOurChallenge(const std::string &c) -{ - this->ourchallenge = c; + Utils->timeoutlist[this] = std::pair(linkID, 30); } -const std::string& TreeSocket::GetTheirChallenge() +void TreeSocket::CleanNegotiationInfo() { - return this->theirchallenge; + // connect is good, reset the autoconnect block (if used) + if (capab->ac) + capab->ac->position = -1; + delete capab; + capab = NULL; } -void TreeSocket::SetTheirChallenge(const std::string &c) +CullResult TreeSocket::cull() { - this->theirchallenge = c; + Utils->timeoutlist.erase(this); + if (capab && capab->ac) + Utils->Creator->ConnectServer(capab->ac, false); + return this->BufferedSocket::cull(); } -std::string TreeSocket::MakePass(const std::string &password, const std::string &challenge) +TreeSocket::~TreeSocket() { - /* This is a simple (maybe a bit hacky?) HMAC algorithm, thanks to jilles for - * suggesting the use of HMAC to secure the password against various attacks. - * - * Note: If m_sha256.so is not loaded, we MUST fall back to plaintext with no - * HMAC challenge/response. - */ - Module* sha256 = Instance->Modules->Find("m_sha256.so"); - if (Utils->ChallengeResponse && sha256 && !challenge.empty()) - { - /* XXX: This is how HMAC is supposed to be done: - * - * sha256( (pass xor 0x5c) + sha256((pass xor 0x36) + m) ) - * - * Note that we are encoding the hex hash, not the binary - * output of the hash which is slightly different to standard. - * - * Don't ask me why its always 0x5c and 0x36... it just is. - */ - std::string hmac1, hmac2; - - for (size_t n = 0; n < password.length(); n++) - { - hmac1 += static_cast(password[n] ^ 0x5C); - hmac2 += static_cast(password[n] ^ 0x36); - } - - hmac2 += challenge; - HashResetRequest(Utils->Creator, sha256).Send(); - hmac2 = HashSumRequest(Utils->Creator, sha256, hmac2).Send(); - - HashResetRequest(Utils->Creator, sha256).Send(); - std::string hmac = hmac1 + hmac2; - hmac = HashSumRequest(Utils->Creator, sha256, hmac).Send(); - - return "HMAC-SHA256:"+ hmac; - } - else if (!challenge.empty() && !sha256) - Instance->Log(DEFAULT,"Not authenticating to server using SHA256/HMAC because we don't have m_sha256 loaded!"); - - return password; + delete capab; } /** When an outbound connection finishes connecting, we receive - * this event, and must send our SERVER string to the other + * this event, and must do CAPAB negotiation with the other * side. If the other side is happy, as outlined in the server * to server docs on the inspircd.org site, the other side - * will then send back its own server string. + * will then send back its own SERVER string eventually. */ -bool TreeSocket::OnConnected() +void TreeSocket::OnConnected() { if (this->LinkState == CONNECTING) { - /* we do not need to change state here. */ - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + if (!capab->link->Hook.empty()) { - if (x->Name == this->myhost) + ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, capab->link->Hook); + if (!prov) { - Utils->Creator->RemoteMessage(NULL,"Connection to \2%s\2[%s] started.", myhost.c_str(), (x->HiddenFromStats ? "" : this->GetIP().c_str())); - if (Hook) - { - BufferedSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); - Utils->Creator->RemoteMessage(NULL,"Connection to \2%s\2[%s] using transport \2%s\2", myhost.c_str(), (x->HiddenFromStats ? "" : this->GetIP().c_str()), - x->Hook.c_str()); - } - this->OutboundPass = x->SendPass; - sentcapab = false; - - /* found who we're supposed to be connecting to, send the neccessary gubbins. */ - if (this->GetHook()) - Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(*x), this->Utils, 1)); - else - this->SendCapabilities(); - - return true; + SetError("Could not find hook '" + capab->link->Hook + "' for connection to " + linkID); + return; } + static_cast(prov)->OnConnect(this); } - } - /* There is a (remote) chance that between the /CONNECT and the connection - * being accepted, some muppet has removed the block and rehashed. - * If that happens the connection hangs here until it's closed. Unlikely - * and rather harmless. - */ - this->Utils->Creator->RemoteMessage(NULL,"Connection to \2%s\2 lost link tag(!)", myhost.c_str()); - return true; -} - -void TreeSocket::OnError(BufferedSocketError e) -{ - Link* MyLink; - - if (this->LinkState == LISTENER) - return; - - switch (e) - { - case I_ERR_CONNECT: - Utils->Creator->RemoteMessage(NULL,"Connection failed: Connection to \002%s\002 refused", myhost.c_str()); - MyLink = Utils->FindLink(myhost); - if (MyLink) - Utils->DoFailOver(MyLink); - break; - case I_ERR_SOCKET: - Utils->Creator->RemoteMessage(NULL,"Connection failed: Could not create socket"); - break; - case I_ERR_BIND: - Utils->Creator->RemoteMessage(NULL,"Connection failed: Error binding socket to address or port"); - break; - case I_ERR_WRITE: - Utils->Creator->RemoteMessage(NULL,"Connection failed: I/O error on connection"); - break; - case I_ERR_NOMOREFDS: - Utils->Creator->RemoteMessage(NULL,"Connection failed: Operating system is out of file descriptors!"); - break; - default: - if ((errno) && (errno != EINPROGRESS) && (errno != EAGAIN)) - Utils->Creator->RemoteMessage(NULL,"Connection to \002%s\002 failed with OS error: %s", myhost.c_str(), strerror(errno)); - break; - } -} -int TreeSocket::OnDisconnect() -{ - /* For the same reason as above, we don't - * handle OnDisconnect() - */ - return true; -} - -/** Recursively send the server tree with distances as hops. - * This is used during network burst to inform the other server - * (and any of ITS servers too) of what servers we know about. - * If at any point any of these servers already exist on the other - * end, our connection may be terminated. The hopcounts given - * by this function are relative, this doesn't matter so long as - * they are all >1, as all the remote servers re-calculate them - * to be relative too, with themselves as hop 0. - */ -void TreeSocket::SendServers(TreeServer* Current, TreeServer* s, int hops) -{ - char command[1024]; - for (unsigned int q = 0; q < Current->ChildCount(); q++) - { - TreeServer* recursive_server = Current->GetChild(q); - if (recursive_server != s) - { - snprintf(command,1024,":%s SERVER %s * %d %s :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops, - recursive_server->GetID().c_str(), - recursive_server->GetDesc().c_str()); - this->WriteLine(command); - this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion()); - /* down to next level */ - this->SendServers(recursive_server, s, hops+1); - } + ServerInstance->SNO->WriteGlobalSno('l', "Connection to \002%s\002[%s] started.", linkID.c_str(), + (capab->link->HiddenFromStats ? "" : capab->link->IPAddr.c_str())); + this->SendCapabilities(1); } } -std::string TreeSocket::RandString(unsigned int length) +void TreeSocket::OnError(BufferedSocketError e) { - char* randombuf = new char[length+1]; - std::string out; -#ifdef WINDOWS - int fd = -1; -#else - int fd = open("/dev/urandom", O_RDONLY, 0); -#endif - - if (fd >= 0) - { -#ifndef WINDOWS - read(fd, randombuf, length); - close(fd); -#endif - } - else - { - for (unsigned int i = 0; i < length; i++) - randombuf[i] = rand(); - } - - for (unsigned int i = 0; i < length; i++) - { - char randchar = static_cast((randombuf[i] & 0x7F) | 0x21); - out += (randchar == '=' ? '_' : randchar); - } - - delete[] randombuf; - return out; + ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\002%s\002' failed with error: %s", + linkID.c_str(), getError().c_str()); + LinkState = DYING; + Close(); } void TreeSocket::SendError(const std::string &errormessage) { - /* Display the error locally as well as sending it remotely */ - Utils->Creator->RemoteMessage(NULL, "Sent \2ERROR\2 to %s: %s", (this->InboundServerName.empty() ? "" : this->InboundServerName.c_str()), errormessage.c_str()); - this->WriteLine("ERROR :"+errormessage); - /* One last attempt to make sure the error reaches its target */ - this->FlushWriteBuffer(); + WriteLine("ERROR :"+errormessage); + DoWrite(); + LinkState = DYING; + SetError(errormessage); } -/** This function forces this server to quit, removing this server - * and any users on it (and servers and users below that, etc etc). - * It's very slow and pretty clunky, but luckily unless your network - * is having a REAL bad hair day, this function shouldnt be called - * too many times a month ;-) - */ -void TreeSocket::SquitServer(std::string &from, TreeServer* Current) -{ - /* recursively squit the servers attached to 'Current'. - * We're going backwards so we don't remove users - * while we still need them ;) - */ - for (unsigned int q = 0; q < Current->ChildCount(); q++) - { - TreeServer* recursive_server = Current->GetChild(q); - this->SquitServer(from,recursive_server); - } - /* Now we've whacked the kids, whack self */ - num_lost_servers++; - num_lost_users += Current->QuitUsers(from); -} - -/** This is a wrapper function for SquitServer above, which - * does some validation first and passes on the SQUIT to all - * other remaining servers. - */ -void TreeSocket::Squit(TreeServer* Current, const std::string &reason) -{ - if ((Current) && (Current != Utils->TreeRoot)) - { - Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server"); - rmode.Send(Instance); - - std::deque params; - params.push_back(Current->GetName()); - params.push_back(":"+reason); - Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName()); - if (Current->GetParent() == Utils->TreeRoot) - { - this->Instance->SNO->WriteToSnoMask('l',"Server \002"+Current->GetName()+"\002 split: "+reason); - } - else - { - this->Instance->SNO->WriteToSnoMask('l',"Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason); - } - num_lost_servers = 0; - num_lost_users = 0; - std::string from = Current->GetParent()->GetName()+" "+Current->GetName(); - SquitServer(from, Current); - Current->Tidy(); - Current->GetParent()->DelChild(Current); - delete Current; - this->Instance->SNO->WriteToSnoMask('l',"Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers); - } - else - Instance->Log(DEFAULT,"Squit from unknown server"); -} - -/** Send one or more FJOINs for a channel of users. - * If the length of a single line is more than 480-NICKMAX - * in length, it is split over multiple lines. - */ -void TreeSocket::SendFJoins(TreeServer* Current, Channel* c) +CmdResult CommandSQuit::HandleServer(TreeServer* server, CommandBase::Params& params) { - std::string buffer; - char list[MAXBUF]; - std::string individual_halfops = std::string(":")+this->Instance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age); - - size_t dlen, curlen; - dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->GetSID().c_str(),c->name,(unsigned long)c->age); - int numusers = 1; - char* ptr = list + dlen; - - CUList *ulist = c->GetUsers(); - std::string modes; - std::string params; - - for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + TreeServer* quitting = Utils->FindServer(params[0]); + if (!quitting) { - // The first parameter gets a : before it - size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->first), i->first->uuid); - - curlen += ptrlen; - ptr += ptrlen; - - numusers++; - - if (curlen > (480-NICKMAX)) - { - buffer.append(list).append("\r\n"); - dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->GetSID().c_str(),c->name,(unsigned long)c->age); - ptr = list + dlen; - ptrlen = 0; - numusers = 0; - } + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Squit from unknown server"); + return CMD_FAILURE; } - if (numusers) - buffer.append(list).append("\r\n"); - - buffer.append(":").append(this->Instance->Config->GetSID()).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(c->ChanModes(true)).append("\r\n"); - - int linesize = 1; - for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++) + CmdResult ret = CMD_SUCCESS; + if (quitting == server) { - int size = strlen(b->data) + 2; - int currsize = linesize + size; - if (currsize <= 350) - { - modes.append("b"); - params.append(" ").append(b->data); - linesize += size; - } - if ((params.length() >= MAXMODES) || (currsize > 350)) - { - /* Wrap at MAXMODES */ - buffer.append(":").append(this->Instance->Config->GetSID()).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params).append("\r\n"); - modes.clear(); - params.clear(); - linesize = 1; - } + ret = CMD_FAILURE; + server = server->GetParent(); } + else if (quitting->GetParent() != server) + throw ProtocolException("Attempted to SQUIT a non-directly connected server or the parent"); - /* Only send these if there are any */ - if (!modes.empty()) - buffer.append(":").append(this->Instance->Config->GetSID()).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params); + server->SQuitChild(quitting, params[1]); - this->WriteLine(buffer); + // XXX: Return CMD_FAILURE when servers SQUIT themselves (i.e. :00S SQUIT 00S :Shutting down) + // to stop this message from being forwarded. + // The squit logic generates a SQUIT message with our sid as the source and sends it to the + // remaining servers. + return ret; } -/** Send G, Q, Z and E lines */ -void TreeSocket::SendXLines(TreeServer* Current) +/** This function is called when we receive data from a remote + * server. + */ +void TreeSocket::OnDataReady() { - char data[MAXBUF]; - std::string buffer; - std::string n = this->Instance->Config->GetSID(); - const char* sn = n.c_str(); - - std::vector types = Instance->XLines->GetAllTypes(); - - for (std::vector::iterator it = types.begin(); it != types.end(); ++it) + Utils->Creator->loopCall = true; + std::string line; + while (GetNextLine(line)) { - XLineLookup* lookup = Instance->XLines->GetAll(*it); - - if (lookup) + std::string::size_type rline = line.find('\r'); + if (rline != std::string::npos) + line.erase(rline); + if (line.find('\0') != std::string::npos) { - for (LookupIter i = lookup->begin(); i != lookup->end(); ++i) - { - snprintf(data,MAXBUF,":%s ADDLINE %s %s %s %lu %lu :%s\r\n",sn, it->c_str(), i->second->Displayable(), - i->second->source, - (unsigned long)i->second->set_time, - (unsigned long)i->second->duration, - i->second->reason); - buffer.append(data); - } + SendError("Read null character from socket"); + break; } - } - if (!buffer.empty()) - this->WriteLine(buffer); -} - -/** Send channel modes and topics */ -void TreeSocket::SendChannelModes(TreeServer* Current) -{ - char data[MAXBUF]; - std::deque list; - std::string n = this->Instance->Config->GetSID(); - const char* sn = n.c_str(); - Instance->Log(DEBUG,"Sending channels and modes, %d to send", this->Instance->chanlist->size()); - for (chan_hash::iterator c = this->Instance->chanlist->begin(); c != this->Instance->chanlist->end(); c++) - { - SendFJoins(Current, c->second); - if (*c->second->topic) + try { - snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic); - this->WriteLine(data); + ProcessLine(line); } - FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this)); - list.clear(); - c->second->GetExtList(list); - for (unsigned int j = 0; j < list.size(); j++) + catch (CoreException& ex) { - FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j])); + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Error while processing: " + line); + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason()); + SendError(ex.GetReason() + " - check the log file for details"); } - } -} -/** send all users and their oper state/modes */ -void TreeSocket::SendUsers(TreeServer* Current) -{ - char data[MAXBUF]; - std::deque list; - std::string dataline; - for (user_hash::iterator u = this->Instance->Users->clientlist->begin(); u != this->Instance->Users->clientlist->end(); u++) - { - if (u->second->registered == REG_ALL) - { - TreeServer* theirserver = Utils->FindServer(u->second->server); - if (theirserver) - { - snprintf(data,MAXBUF,":%s UID %s %lu %s %s %s %s +%s %s %lu :%s", theirserver->GetID().c_str(), u->second->uuid, - (unsigned long)u->second->age, u->second->nick, u->second->host, u->second->dhost, - u->second->ident, u->second->FormatModes(), u->second->GetIPString(), - (unsigned long)u->second->signon, u->second->fullname); - this->WriteLine(data); - if (*u->second->oper) - { - snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->uuid, u->second->oper); - this->WriteLine(data); - } - if (*u->second->awaymsg) - { - snprintf(data,MAXBUF,":%s AWAY :%s", u->second->uuid, u->second->awaymsg); - this->WriteLine(data); - } - } - - FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this)); - list.clear(); - u->second->GetExtList(list); - for (unsigned int j = 0; j < list.size(); j++) - { - FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j])); - } - } - } -} - -/** This function is called when we want to send a netburst to a local - * server. There is a set order we must do this, because for example - * users require their servers to exist, and channels require their - * users to exist. You get the idea. - */ -void TreeSocket::DoBurst(TreeServer* s) -{ - std::string name = s->GetName(); - std::string burst = ":" + this->Instance->Config->GetSID() + " BURST " +ConvToStr(Instance->Time(true)); - std::string endburst = ":" + this->Instance->Config->GetSID() + " ENDBURST"; - this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2%s\2 (Authentication: %s).", name.c_str(), this->GetTheirChallenge().empty() ? "plaintext password" : "SHA256-HMAC challenge-response"); - this->WriteLine(burst); - /* send our version string */ - this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" VERSION :"+this->Instance->GetVersionString()); - /* Send server tree */ - this->SendServers(Utils->TreeRoot,s,1); - /* Send users and their oper status */ - this->SendUsers(s); - /* Send everything else (channel modes, xlines etc) */ - this->SendChannelModes(s); - this->SendXLines(s); - FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this)); - this->WriteLine(endburst); - this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2."); -} - -/** This function is called when we receive data from a remote - * server. We buffer the data in a std::string (it doesnt stay - * there for long), reading using BufferedSocket::Read() which can - * read up to 16 kilobytes in one operation. - * - * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES - * THE SOCKET OBJECT FOR US. - */ -bool TreeSocket::OnDataReady() -{ - char* data = this->Read(); - /* Check that the data read is a valid pointer and it has some content */ - if (data && *data) - { - this->in_buffer.append(data); - /* While there is at least one new line in the buffer, - * do something useful (we hope!) with it. - */ - while (in_buffer.find("\n") != std::string::npos) - { - std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1); - in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n")); - /* Use rfind here not find, as theres more - * chance of the \r being near the end of the - * string, not the start. - */ - if (ret.find("\r") != std::string::npos) - ret = in_buffer.substr(0,in_buffer.find("\r")-1); - /* Process this one, abort if it - * didnt return true. - */ - if (!this->ProcessLine(ret)) - { - return false; - } - } - return true; + if (!getError().empty()) + break; } - /* EAGAIN returns an empty but non-NULL string, so this - * evaluates to TRUE for EAGAIN but to FALSE for EOF. - */ - return (data && !*data); + if (LinkState != CONNECTED && recvq.length() > 4096) + SendError("RecvQ overrun (line too long)"); + Utils->Creator->loopCall = false; }