X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Ftreesocket1.cpp;h=1c72f3ad78a5c6a8380e4b84faa6e30394658aa5;hb=8710724b5518ae9858309e548514f76e620a8459;hp=407717bde37140d219322d6e597a50770c9ba9c7;hpb=2192a9f58aae466a42d60279fb34ee3c5d2950a1;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/treesocket1.cpp b/src/modules/m_spanningtree/treesocket1.cpp index 407717bde..1c72f3ad7 100644 --- a/src/modules/m_spanningtree/treesocket1.cpp +++ b/src/modules/m_spanningtree/treesocket1.cpp @@ -1,82 +1,80 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007-2008 Robin Burchell + * Copyright (C) 2007 Craig Edwards + * Copyright (C) 2007 Dennis Friis * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * 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 free but copyrighted software; see - * the file COPYING for details. + * 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 */ +#include "inspircd.h" +#include "iohook.h" +#include "main.h" +#include "modules/spanningtree.h" +#include "utils.h" +#include "treeserver.h" +#include "link.h" +#include "treesocket.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. */ -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(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) +TreeSocket::TreeSocket(SpanningTreeUtilities* Util, Link* link, Autoconnect* myac, const std::string& ipaddr) + : Utils(Util), linkID(assign(link->Name)), LinkState(CONNECTING), MyRoot(NULL), proto_version(0), ConnectionFailureShown(false) + , age(ServerInstance->Time()) { - myhost = ServerName; - theirchallenge.clear(); - ourchallenge.clear(); - this->LinkState = CONNECTING; - if (Hook) - BufferedSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); + capab = new CapabData; + capab->link = link; + capab->ac = myac; + capab->capab_phase = 0; + if (!link->Hook.empty()) + { + ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, link->Hook); + if (!prov) + { + SetError("Could not find hook '" + link->Hook + "' for connection to " + linkID); + return; + } + AddIOHook(static_cast(prov)); + } + DoConnect(ipaddr, link->Port, link->Timeout, link->Bind); + 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. */ -TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, char* ip, Module* HookMod) - : BufferedSocket(SI, newfd, ip), Utils(Util), Hook(HookMod) +TreeSocket::TreeSocket(SpanningTreeUtilities* Util, int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) + : BufferedSocket(newfd), Utils(Util), linkID("inbound from " + client->addr()), LinkState(WAIT_AUTH_1), MyRoot(NULL), proto_version(0) + , ConnectionFailureShown(false), age(ServerInstance->Time()) { - 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(); + capab = new CapabData; + capab->capab_phase = 0; + + FOREACH_MOD(OnHookIO, (this, via)); + if (GetIOHook()) + GetIOHook()->OnStreamSocketAccept(this, client, server); + SendCapabilities(1); - Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(Utils->LinkBlocks[0]), this->Utils, 1)); + Utils->timeoutlist[this] = std::pair(linkID, 30); } ServerState TreeSocket::GetLinkState() @@ -84,81 +82,26 @@ ServerState TreeSocket::GetLinkState() return this->LinkState; } -Module* TreeSocket::GetHook() -{ - return this->Hook; -} - -TreeSocket::~TreeSocket() -{ - if (Hook) - BufferedSocketUnhookRequest(this, (Module*)Utils->Creator, Hook).Send(); - - Utils->DelBurstingServer(this); -} - -const std::string& TreeSocket::GetOurChallenge() +void TreeSocket::CleanNegotiationInfo() { - return this->ourchallenge; + // connect is good, reset the autoconnect block (if used) + if (capab->ac) + capab->ac->position = -1; + delete capab; + capab = NULL; } -void TreeSocket::SetOurChallenge(const std::string &c) +CullResult TreeSocket::cull() { - this->ourchallenge = c; + Utils->timeoutlist.erase(this); + if (capab && capab->ac) + Utils->Creator->ConnectServer(capab->ac, false); + return this->BufferedSocket::cull(); } -const std::string& TreeSocket::GetTheirChallenge() -{ - return this->theirchallenge; -} - -void TreeSocket::SetTheirChallenge(const std::string &c) +TreeSocket::~TreeSocket() { - this->theirchallenge = c; -} - -std::string TreeSocket::MakePass(const std::string &password, const std::string &challenge) -{ - /* 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 @@ -167,383 +110,29 @@ std::string TreeSocket::MakePass(const std::string &password, const std::string * to server docs on the inspircd.org site, the other side * will then send back its own server string. */ -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 (x->Name == this->myhost) - { - 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; - } - } + ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2[%s] started.", linkID.c_str(), + (capab->link->HiddenFromStats ? "" : capab->link->IPAddr.c_str())); + this->SendCapabilities(1); } - /* 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); - } - } -} - -std::string TreeSocket::MyCapabilities() -{ - std::vector modlist = this->Instance->Modules->GetAllModuleNames(VF_COMMON); - std::string capabilities; - sort(modlist.begin(),modlist.end()); - for (unsigned int i = 0; i < modlist.size(); i++) - { - if (i) - capabilities = capabilities + ","; - capabilities = capabilities + modlist[i]; - } - return capabilities; -} - -std::string TreeSocket::RandString(unsigned int length) -{ - 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; -} - -void TreeSocket::SendCapabilities() -{ - if (sentcapab) - return; - - sentcapab = true; - irc::commasepstream modulelist(MyCapabilities()); - this->WriteLine("CAPAB START"); - - /* Send module names, split at 509 length */ - std::string item; - std::string line = "CAPAB MODULES "; - while (modulelist.GetToken(item)) - { - if (line.length() + item.length() + 1 > 509) - { - this->WriteLine(line); - line = "CAPAB MODULES "; - } - - if (line != "CAPAB MODULES ") - line.append(","); - - line.append(item); - } - if (line != "CAPAB MODULES ") - this->WriteLine(line); - - int ip6 = 0; - int ip6support = 0; -#ifdef IPV6 - ip6 = 1; -#endif -#ifdef SUPPORT_IP6LINKS - ip6support = 1; -#endif - std::string extra; - /* Do we have sha256 available? If so, we send a challenge */ - if (Utils->ChallengeResponse && (Instance->Modules->Find("m_sha256.so"))) - { - this->SetOurChallenge(RandString(20)); - extra = " CHALLENGE=" + this->GetOurChallenge(); - } - - this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion)+extra+" PREFIX="+Instance->Modes->BuildPrefixes()+" CHANMODES="+Instance->Modes->ChanModes()+" SVSPART=1"); - - this->WriteLine("CAPAB END"); -} - -/* Check a comma seperated list for an item */ -bool TreeSocket::HasItem(const std::string &list, const std::string &item) -{ - irc::commasepstream seplist(list); - std::string item2; - - while (seplist.GetToken(item2)) - { - if (item2 == item) - return true; - } - return false; -} - -/* Isolate and return the elements that are different between two comma seperated lists */ -std::string TreeSocket::ListDifference(const std::string &one, const std::string &two) -{ - irc::commasepstream list_one(one); - std::string item; - std::string result; - while (list_one.GetToken(item)) - { - if (!HasItem(two, item)) - { - result.append(" "); - result.append(item); - } - } - return result; + ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\002%s\002' failed with error: %s", + linkID.c_str(), getError().c_str()); + LinkState = DYING; } 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(); -} - -bool TreeSocket::Capab(const std::deque ¶ms) -{ - if (params.size() < 1) - { - this->SendError("Invalid number of parameters for CAPAB - Mismatched version"); - return false; - } - if (params[0] == "START") - { - this->ModuleList.clear(); - this->CapKeys.clear(); - } - else if (params[0] == "END") - { - std::string reason; - int ip6support = 0; -#ifdef SUPPORT_IP6LINKS - ip6support = 1; -#endif - /* Compare ModuleList and check CapKeys... - * Maybe this could be tidier? -- Brain - */ - if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length())) - { - std::string diff = ListDifference(this->ModuleList, this->MyCapabilities()); - if (!diff.length()) - { - diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList); - } - else - { - diff = "this server:" + diff; - } - if (diff.length() == 12) - reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists."; - else - reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff; - } - - cap_validation valid_capab[] = { - {"Maximum nickname lengths differ or remote nickname length not specified", "NICKMAX", NICKMAX}, - {"Maximum ident lengths differ or remote ident length not specified", "IDENTMAX", IDENTMAX}, - {"Maximum channel lengths differ or remote channel length not specified", "CHANMAX", CHANMAX}, - {"Maximum modes per line differ or remote modes per line not specified", "MAXMODES", MAXMODES}, - {"Maximum quit lengths differ or remote quit length not specified", "MAXQUIT", MAXQUIT}, - {"Maximum topic lengths differ or remote topic length not specified", "MAXTOPIC", MAXTOPIC}, - {"Maximum kick lengths differ or remote kick length not specified", "MAXKICK", MAXKICK}, - {"Maximum GECOS (fullname) lengths differ or remote GECOS length not specified", "MAXGECOS", MAXGECOS}, - {"Maximum awaymessage lengths differ or remote awaymessage length not specified", "MAXAWAY", MAXAWAY}, - {"", "", 0} - }; - - if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support)))) - reason = "We don't both support linking to IPV6 servers"; - if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support)) - reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers"; - if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion))))) - { - if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) - reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion); - else - reason = "Protocol version not specified"; - } - - if(this->CapKeys.find("PREFIX") != this->CapKeys.end() && this->CapKeys.find("PREFIX")->second != this->Instance->Modes->BuildPrefixes()) - reason = "One or more of the prefixes on the remote server are invalid on this server."; - - if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (Instance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(Instance->Config->AllowHalfop)))) - reason = "We don't both have halfop support enabled/disabled identically"; - - for (int x = 0; valid_capab[x].size; ++x) - { - if (((this->CapKeys.find(valid_capab[x].key) == this->CapKeys.end()) || ((this->CapKeys.find(valid_capab[x].key) != this->CapKeys.end()) && - (this->CapKeys.find(valid_capab[x].key)->second != ConvToStr(valid_capab[x].size))))) - reason = valid_capab[x].reason; - } - - /* Challenge response, store their challenge for our password */ - std::map::iterator n = this->CapKeys.find("CHALLENGE"); - if (Utils->ChallengeResponse && (n != this->CapKeys.end()) && (Instance->Modules->Find("m_sha256.so"))) - { - /* Challenge-response is on now */ - this->SetTheirChallenge(n->second); - if (!this->GetTheirChallenge().empty() && (this->LinkState == CONNECTING)) - { - this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(OutboundPass, this->GetTheirChallenge())+" 0 "+ - Instance->Config->GetSID()+" :"+this->Instance->Config->ServerDesc); - } - } - else - { - /* They didnt specify a challenge or we don't have m_sha256.so, we use plaintext */ - if (this->LinkState == CONNECTING) - this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+OutboundPass+" 0 "+Instance->Config->GetSID()+" :"+this->Instance->Config->ServerDesc); - } - - if (reason.length()) - { - this->SendError("CAPAB negotiation failed: "+reason); - return false; - } - } - else if ((params[0] == "MODULES") && (params.size() == 2)) - { - if (!this->ModuleList.length()) - { - this->ModuleList.append(params[1]); - } - else - { - this->ModuleList.append(","); - this->ModuleList.append(params[1]); - } - } - - else if ((params[0] == "CAPABILITIES") && (params.size() == 2)) - { - irc::tokenstream capabs(params[1]); - std::string item; - bool more = true; - while ((more = capabs.GetToken(item))) - { - /* Process each key/value pair */ - std::string::size_type equals = item.rfind('='); - if (equals != std::string::npos) - { - std::string var = item.substr(0, equals); - std::string value = item.substr(equals+1, item.length()); - CapKeys[var] = value; - } - } - } - return true; + WriteLine("ERROR :"+errormessage); + DoWrite(); + LinkState = DYING; + SetError(errormessage); } /** This function forces this server to quit, removing this server @@ -552,8 +141,9 @@ bool TreeSocket::Capab(const std::deque ¶ms) * 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) +void TreeSocket::SquitServer(std::string &from, TreeServer* Current, int& num_lost_servers, int& num_lost_users) { + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "SquitServer for %s from %s", Current->GetName().c_str(), from.c_str()); /* recursively squit the servers attached to 'Current'. * We're going backwards so we don't remove users * while we still need them ;) @@ -561,7 +151,7 @@ void TreeSocket::SquitServer(std::string &from, TreeServer* Current) for (unsigned int q = 0; q < Current->ChildCount(); q++) { TreeServer* recursive_server = Current->GetChild(q); - this->SquitServer(from,recursive_server); + this->SquitServer(from,recursive_server, num_lost_servers, num_lost_users); } /* Now we've whacked the kids, whack self */ num_lost_servers++; @@ -574,800 +164,76 @@ void TreeSocket::SquitServer(std::string &from, TreeServer* Current) */ void TreeSocket::Squit(TreeServer* Current, const std::string &reason) { + bool LocalSquit = false; + if ((Current) && (Current != Utils->TreeRoot)) { - Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server"); - rmode.Send(Instance); + DelServerEvent(Utils->Creator, Current->GetName()); + + if (!Current->GetSocket() || Current->GetSocket()->Introduced()) + { + parameterlist params; + params.push_back(Current->GetID()); + params.push_back(":"+reason); + Utils->DoOneToAllButSender(Current->GetParent()->GetID(),"SQUIT",params,Current->GetName()); + } - 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); + ServerInstance->SNO->WriteGlobalSno('l', "Server \002"+Current->GetName()+"\002 split: "+reason); + LocalSquit = true; } else { - this->Instance->SNO->WriteToSnoMask('l',"Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason); + ServerInstance->SNO->WriteGlobalSno('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; + int num_lost_servers = 0; + int num_lost_users = 0; std::string from = Current->GetParent()->GetName()+" "+Current->GetName(); - SquitServer(from, Current); + SquitServer(from, Current, num_lost_servers, num_lost_users); + ServerInstance->SNO->WriteToSnoMask(LocalSquit ? 'l' : 'L', "Netsplit complete, lost \002%d\002 user%s on \002%d\002 server%s.", + num_lost_users, num_lost_users != 1 ? "s" : "", num_lost_servers, num_lost_servers != 1 ? "s" : ""); Current->Tidy(); Current->GetParent()->DelChild(Current); + Current->cull(); 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"); -} - -/** FMODE command - server mode with timestamp checks */ -bool TreeSocket::ForceMode(const std::string &source, std::deque ¶ms) -{ - /* Chances are this is a 1.0 FMODE without TS */ - if (params.size() < 3) - { - /* No modes were in the command, probably a channel with no modes set on it */ - return true; - } - - bool smode = false; - std::string sourceserv; - /* Are we dealing with an FMODE from a user, or from a server? */ - User* who = this->Instance->FindNick(source); - if (who) - { - /* FMODE from a user, set sourceserv to the users server name */ - sourceserv = who->server; - } - else - { - /* FMODE from a server, use a fake user to receive mode feedback */ - who = this->Instance->FakeClient; - smode = true; /* Setting this flag tells us we should free the User later */ - sourceserv = source; /* Set sourceserv to the actual source string */ - } - const char* modelist[64]; - time_t TS = 0; - int n = 0; - memset(&modelist,0,sizeof(modelist)); - for (unsigned int q = 0; (q < params.size()) && (q < 64); q++) - { - if (q == 1) - { - /* The timestamp is in this position. - * We don't want to pass that up to the - * server->client protocol! - */ - TS = atoi(params[q].c_str()); - } - else + if (Current == MyRoot) { - /* Everything else is fine to append to the modelist */ - modelist[n++] = params[q].c_str(); + MyRoot = NULL; + Close(); } - - } - /* Extract the TS value of the object, either User or Channel */ - User* dst = this->Instance->FindNick(params[0]); - Channel* chan = NULL; - time_t ourTS = 0; - if (dst) - { - ourTS = dst->age; } else - { - chan = this->Instance->FindChan(params[0]); - if (chan) - { - ourTS = chan->age; - } - else - /* Oops, channel doesnt exist! */ - return true; - } - - if (!TS) - { - Instance->Log(DEFAULT,"*** BUG? *** TS of 0 sent to FMODE. Are some services authors smoking craq, or is it 1970 again?. Dropped."); - Instance->SNO->WriteToSnoMask('d', "WARNING: The server %s is sending FMODE with a TS of zero. Total craq. Mode was dropped.", sourceserv.c_str()); - return true; - } - - /* TS is equal or less: Merge the mode changes into ours and pass on. - */ - if (TS <= ourTS) - { - if ((TS < ourTS) && (!dst)) - Instance->Log(DEFAULT,"*** BUG *** Channel TS sent in FMODE to %s is %lu which is not equal to %lu!", params[0].c_str(), TS, ourTS); - - if (smode) - { - this->Instance->SendMode(modelist, n, who); - } - else - { - this->Instance->CallCommandHandler("MODE", modelist, n, who); - } - /* HOT POTATO! PASS IT ON! */ - Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv); - } - /* If the TS is greater than ours, we drop the mode and dont pass it anywhere. - */ - return true; -} - -/** FTOPIC command */ -bool TreeSocket::ForceTopic(const std::string &source, std::deque ¶ms) -{ - if (params.size() != 4) - return true; - time_t ts = atoi(params[1].c_str()); - std::string nsource = source; - Channel* c = this->Instance->FindChan(params[0]); - if (c) - { - if ((ts >= c->topicset) || (!*c->topic)) - { - std::string oldtopic = c->topic; - strlcpy(c->topic,params[3].c_str(),MAXTOPIC); - strlcpy(c->setby,params[2].c_str(),127); - c->topicset = ts; - /* if the topic text is the same as the current topic, - * dont bother to send the TOPIC command out, just silently - * update the set time and set nick. - */ - if (oldtopic != params[3]) - { - User* user = this->Instance->FindNick(source); - if (!user) - { - c->WriteChannelWithServ(Instance->Config->ServerName, "TOPIC %s :%s", c->name, c->topic); - } - else - { - c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic); - nsource = user->server; - } - /* all done, send it on its way */ - params[3] = ":" + params[3]; - Utils->DoOneToAllButSender(source,"FTOPIC",params,nsource); - } - } - - } - return true; -} - -/** FJOIN, similar to TS6 SJOIN, but not quite. */ -bool TreeSocket::ForceJoin(const std::string &source, std::deque ¶ms) -{ - /* 1.1 FJOIN works as follows: - * - * Each FJOIN is sent along with a timestamp, and the side with the lowest - * timestamp 'wins'. From this point on we will refer to this side as the - * winner. The side with the higher timestamp loses, from this point on we - * will call this side the loser or losing side. This should be familiar to - * anyone who's dealt with dreamforge or TS6 before. - * - * When two sides of a split heal and this occurs, the following things - * will happen: - * - * If the timestamps are exactly equal, both sides merge their privilages - * and users, as in InspIRCd 1.0 and ircd2.8. The channels have not been - * re-created during a split, this is safe to do. - * - * If the timestamps are NOT equal, the losing side removes all of its - * modes from the channel, before introducing new users into the channel - * which are listed in the FJOIN command's parameters. The losing side then - * LOWERS its timestamp value of the channel to match that of the winning - * side, and the modes of the users of the winning side are merged in with - * the losing side. - * - * The winning side on the other hand will ignore all user modes from the - * losing side, so only its own modes get applied. Life is simple for those - * who succeed at internets. :-) - * - * NOTE: Unlike TS6 and dreamforge and other protocols which have SJOIN, - * FJOIN does not contain the simple-modes such as +iklmnsp. Why not, - * you ask? Well, quite simply because we don't need to. They'll be sent - * after the FJOIN by FMODE, and FMODE is timestamped, so in the event - * the losing side sends any modes for the channel which shouldnt win, - * they wont as their timestamp will be too high :-) - */ - - if (params.size() < 2) - return true; - - irc::modestacker modestack(true); /* Modes to apply from the users in the user list */ - User* who = NULL; /* User we are currently checking */ - std::string channel = params[0]; /* Channel name, as a string */ - time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */ - irc::tokenstream users((params.size() > 2) ? params[2] : ""); /* users from the user list */ - bool apply_other_sides_modes = true; /* True if we are accepting the other side's modes */ - Channel* chan = this->Instance->FindChan(channel); /* The channel we're sending joins to */ - time_t ourTS = chan ? chan->age : Instance->Time(true)+600; /* The TS of our side of the link */ - bool created = !chan; /* True if the channel doesnt exist here yet */ - std::string item; /* One item in the list of nicks */ - - if (params.size() > 2) - params[2] = ":" + params[2]; - - Utils->DoOneToAllButSender(source,"FJOIN",params,source); - - if (!TS) - { - Instance->Log(DEFAULT,"*** BUG? *** TS of 0 sent to FJOIN. Are some services authors smoking craq, or is it 1970 again?. Dropped."); - Instance->SNO->WriteToSnoMask('d', "WARNING: The server %s is sending FJOIN with a TS of zero. Total craq. Command was dropped.", source.c_str()); - return true; - } - - if (created) - chan = new Channel(Instance, channel, ourTS); - - /* If our TS is less than theirs, we dont accept their modes */ - if (ourTS < TS) - apply_other_sides_modes = false; - - /* Our TS greater than theirs, clear all our modes from the channel, accept theirs. */ - if (ourTS > TS) - { - std::deque param_list; - if (Utils->AnnounceTSChange && chan) - chan->WriteChannelWithServ(Instance->Config->ServerName, "NOTICE %s :TS for %s changed from %lu to %lu", chan->name, chan->name, ourTS, TS); - ourTS = TS; - if (!created) - { - chan->age = TS; - param_list.push_back(channel); - this->RemoveStatus(Instance->Config->GetSID(), param_list); - } - } - - /* Now, process every 'prefixes,nick' pair */ - while (users.GetToken(item)) - { - const char* usr = item.c_str(); - if (usr && *usr) - { - const char* permissions = usr; - /* Iterate through all the prefix values, convert them from prefixes to mode letters */ - std::string modes; - while ((*permissions) && (*permissions != ',')) - { - ModeHandler* mh = Instance->Modes->FindPrefix(*permissions); - if (mh) - modes = modes + mh->GetModeChar(); - else - { - this->SendError(std::string("Invalid prefix '")+(*permissions)+"' in FJOIN"); - return false; - } - usr++; - permissions++; - } - /* Advance past the comma, to the nick */ - usr++; - - /* Check the user actually exists */ - who = this->Instance->FindUUID(usr); - if (who) - { - /* Check that the user's 'direction' is correct */ - TreeServer* route_back_again = Utils->BestRouteTo(who->server); - if ((!route_back_again) || (route_back_again->GetSocket() != this)) - continue; - - /* Add any permissions this user had to the mode stack */ - for (std::string::iterator x = modes.begin(); x != modes.end(); ++x) - modestack.Push(*x, who->nick); - - Channel::JoinUser(this->Instance, who, channel.c_str(), true, "", true, TS); - } - else - { - Instance->Log(SPARSE,"Warning! Invalid user %s in FJOIN to channel %s IGNORED", usr, channel.c_str()); - continue; - } - } - } - - /* Flush mode stacker if we lost the FJOIN or had equal TS */ - if (apply_other_sides_modes) - { - std::deque stackresult; - const char* mode_junk[MAXMODES+2]; - mode_junk[0] = channel.c_str(); - - while (modestack.GetStackedLine(stackresult)) - { - for (size_t j = 0; j < stackresult.size(); j++) - { - mode_junk[j+1] = stackresult[j].c_str(); - } - Instance->SendMode(mode_junk, stackresult.size() + 1, Instance->FakeClient); - } - } - - return true; -} - -/* - * Yes, this function looks a little ugly. - * However, in some circumstances we may not have a User, so we need to do things this way. - * Returns 1 if colliding local client, 2 if colliding remote, 3 if colliding both. - * Sends SVSNICKs as appropriate and forces nickchanges too. - */ -int TreeSocket::DoCollision(User *u, time_t remotets, const char *remoteident, const char *remoteip, const char *remoteuid) -{ - /* - * Under old protocol rules, we would have had to kill both clients. - * Really, this sucks. - * These days, we have UID. And, so what we do is, force nick change client(s) - * involved according to timestamp rules. - * - * RULES: - * user@ip equal: - * Force nick change on OLDER timestamped client - * user@ip differ: - * Force nick change on NEWER timestamped client - * TS EQUAL: - * FNC both. - * - * This stops abusive use of collisions, simplifies problems with loops, and so on. - * -- w00t - */ - bool bChangeLocal = true; - bool bChangeRemote = true; - - /* for brevity, don't use the User */ - time_t localts = u->age; - const char *localident = u->ident; - const char *localip = u->GetIPString(); - - /* mmk. let's do this again. */ - if (remotets == localts) - { - /* equal. fuck them both! do nada, let the handler at the bottom figure this out. */ - } - else - { - /* fuck. now it gets complex. */ - - /* first, let's see if ident@host matches. */ - bool SamePerson = !strcmp(localident, remoteident) - && !strcmp(localip, remoteip); - - /* - * if ident@ip is equal, and theirs is newer, or - * ident@ip differ, and ours is newer - */ - if((SamePerson && remotets < localts) || - (!SamePerson && remotets > localts)) - { - /* remote needs to change */ - bChangeLocal = false; - } - else - { - /* ours needs to change */ - bChangeRemote = false; - } - } - - - if (bChangeLocal) - { - u->ForceNickChange(u->uuid); - - if (!bChangeRemote) - return 1; - } - if (bChangeRemote) - { - /* - * Cheat a little here. Instead of a dedicated command to change UID, - * use SVSNICK and accept their client with it's UID (as we know the SVSNICK will - * not fail under any circumstances -- UIDs are netwide exclusive). - * - * This means that each side of a collide will generate one extra NICK back to where - * they have just linked (and where it got the SVSNICK from), however, it will - * be dropped harmlessly as it will come in as :928AAAB NICK 928AAAB, and we already - * have 928AAAB's nick set to that. - * -- w00t - */ - User *remote = this->Instance->FindUUID(remoteuid); - - if (remote) - { - /* buh.. nick change collide. force change their nick. */ - remote->ForceNickChange(remote->uuid); - } - else - { - /* user has not been introduced yet, just inform their server */ - this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" SVSNICK "+remoteuid+" " + remoteuid + " " + ConvToStr(remotets)); - } - - if (!bChangeLocal) - return 2; - } - - return 3; -} - -bool TreeSocket::ParseUID(const std::string &source, std::deque ¶ms) -{ - /** Do we have enough parameters: - * UID uuid age nick host dhost ident +modestr ip.string :gecos - */ - if (params.size() != 10) - { - this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction ("+params[0]+" with only "+ - ConvToStr(params.size())+" of 10 parameters?)"); - return true; - } - - time_t age = ConvToInt(params[1]); - time_t signon = ConvToInt(params[8]); - const char* tempnick = params[2].c_str(); - std::string empty; - - /* XXX probably validate UID length too -- w00t */ - cmd_validation valid[] = { {"Nickname", 2, NICKMAX}, {"Hostname", 3, 64}, {"Displayed hostname", 4, 64}, {"Ident", 5, IDENTMAX}, {"GECOS", 9, MAXGECOS}, {"", 0, 0} }; - - TreeServer* remoteserver = Utils->FindServer(source); - - if (!remoteserver) - { - this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (Unknown server "+source+")"); - return true; - } - - /* Check parameters for validity before introducing the client, discovered by dmb */ - if (!age) - { - this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (Invalid TS?)"); - return true; - } - - for (size_t x = 0; valid[x].length; ++x) - { - if (params[valid[x].param].length() > valid[x].length) - { - this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (" + valid[x].item + " > " + ConvToStr(valid[x].length) + ")"); - return true; - } - } - - - /* check for collision */ - user_hash::iterator iter = this->Instance->clientlist->find(tempnick); - - if (iter != this->Instance->clientlist->end()) - { - /* - * Nick collision. - */ - Instance->Log(DEBUG,"*** Collision on %s", tempnick); - int collide = this->DoCollision(iter->second, age, params[5].c_str(), params[7].c_str(), params[0].c_str()); - - if (collide == 2) - { - /* remote client changed, make sure we change their nick for the hash too */ - tempnick = params[0].c_str(); - } - } - - /* IMPORTANT NOTE: For remote users, we pass the UUID in the constructor. This automatically - * sets it up in the UUID hash for us. - */ - User* _new = NULL; - try - { - _new = new User(this->Instance, params[0]); - } - catch (...) - { - SendError("Protocol violation - Duplicate UUID '" + params[0] + "' on introduction of new user"); - return false; - } - (*(this->Instance->clientlist))[tempnick] = _new; - _new->SetFd(FD_MAGIC_NUMBER); - strlcpy(_new->nick, tempnick, NICKMAX - 1); - strlcpy(_new->host, params[3].c_str(),64); - strlcpy(_new->dhost, params[4].c_str(),64); - _new->server = this->Instance->FindServerNamePtr(remoteserver->GetName().c_str()); - strlcpy(_new->ident, params[5].c_str(),IDENTMAX); - strlcpy(_new->fullname, params[9].c_str(),MAXGECOS); - _new->registered = REG_ALL; - _new->signon = signon; - _new->age = age; - - /* we need to remove the + from the modestring, so we can do our stuff */ - std::string::size_type pos_after_plus = params[6].find_first_not_of('+'); - if (pos_after_plus != std::string::npos) - params[6] = params[6].substr(pos_after_plus); - - for (std::string::iterator v = params[6].begin(); v != params[6].end(); v++) - { - /* For each mode thats set, increase counter */ - ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER); - - if (mh) - { - mh->OnModeChange(_new, _new, NULL, empty, true); - _new->SetMode(*v, true); - mh->ChangeCount(1); - } - } - - /* now we've done with modes processing, put the + back for remote servers */ - params[6] = "+" + params[6]; - -#ifdef SUPPORT_IP6LINKS - if (params[7].find_first_of(":") != std::string::npos) - _new->SetSockAddr(AF_INET6, params[7].c_str(), 0); - else -#endif - _new->SetSockAddr(AF_INET, params[7].c_str(), 0); - - Instance->Users->AddGlobalClone(_new); - - bool dosend = !(((this->Utils->quiet_bursts) && (this->bursting || Utils->FindRemoteBurstServer(remoteserver))) || (this->Instance->SilentULine(_new->server))); - - if (dosend) - this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s] [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString(), _new->fullname); - - params[9] = ":" + params[9]; - Utils->DoOneToAllButSender(source, "UID", params, source); - - FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new)); - - return true; + ServerInstance->Logs->Log(MODNAME, 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. +/** This function is called when we receive data from a remote + * server. */ -void TreeSocket::SendFJoins(TreeServer* Current, Channel* c) +void TreeSocket::OnDataReady() { - 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++) + Utils->Creator->loopCall = true; + std::string line; + while (GetNextLine(line)) { - // 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)) + std::string::size_type rline = line.find('\r'); + if (rline != std::string::npos) + line = line.substr(0,rline); + if (line.find('\0') != std::string::npos) { - 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; - } - } - - 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++) - { - 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; - } - } - - /* 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); - - this->WriteLine(buffer); -} - -/** Send G, Q, Z and E lines */ -void TreeSocket::SendXLines(TreeServer* Current) -{ - 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) - { - XLineLookup* lookup = Instance->XLines->GetAll(*it); - - if (lookup) - { - 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); - } - } - } - - 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) - { - 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); - } - 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++) - { - FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j])); - } - } -} - -/** 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->clientlist->begin(); u != this->Instance->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])); - } + SendError("Read null character from socket"); + break; } + ProcessLine(line); + if (!getError().empty()) + break; } + if (LinkState != CONNECTED && recvq.length() > 4096) + SendError("RecvQ overrun (line too long)"); + Utils->Creator->loopCall = false; } -/** 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) +bool TreeSocket::Introduced() { - std::string name = s->GetName(); - std::string burst = "BURST "+ConvToStr(Instance->Time(true)); - std::string endburst = "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; - } - /* EAGAIN returns an empty but non-NULL string, so this - * evaluates to TRUE for EAGAIN but to FALSE for EOF. - */ - return (data && !*data); + return (capab == NULL); }