X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Fnetburst.cpp;h=ac68efb96b4ad12f8c08e601272aef8058a1d19c;hb=56b4dc61e49e4218544f51ac9a25ab3ece60a782;hp=2c9c687b81f93532bed6bd57798984642e8386ff;hpb=7656b6656582e5064f8ab1c6cf4a246a017999d1;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/netburst.cpp b/src/modules/m_spanningtree/netburst.cpp index 2c9c687b8..ac68efb96 100644 --- a/src/modules/m_spanningtree/netburst.cpp +++ b/src/modules/m_spanningtree/netburst.cpp @@ -1,9 +1,13 @@ /* * InspIRCd -- Internet Relay Chat Daemon * - * Copyright (C) 2009 Daniel De Graaf + * Copyright (C) 2017 B00mX0r + * Copyright (C) 2013, 2019 Sadie Powell + * Copyright (C) 2012-2015 Attila Molnar + * Copyright (C) 2012, 2019 Robby + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2008, 2010 Craig Edwards * Copyright (C) 2008 Robin Burchell - * Copyright (C) 2008 Craig Edwards * * 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 @@ -21,11 +25,79 @@ #include "inspircd.h" #include "xline.h" +#include "listmode.h" #include "treesocket.h" #include "treeserver.h" -#include "utils.h" #include "main.h" +#include "commands.h" + +/** + * Creates FMODE messages, used only when syncing channels + */ +class FModeBuilder : public CmdBuilder +{ + static const size_t maxline = 480; + std::string params; + unsigned int modes; + std::string::size_type startpos; + + public: + FModeBuilder(Channel* chan) + : CmdBuilder("FMODE"), modes(0) + { + push(chan->name).push_int(chan->age).push_raw(" +"); + startpos = str().size(); + } + + /** Add a mode to the message + */ + void push_mode(const char modeletter, const std::string& mask) + { + push_raw(modeletter); + params.push_back(' '); + params.append(mask); + modes++; + } + + /** Remove all modes from the message + */ + void clear() + { + content.erase(startpos); + params.clear(); + modes = 0; + } + + /** Prepare the message for sending, next mode can only be added after clear() + */ + const std::string& finalize() + { + return push_raw(params); + } + + /** Returns true if the given mask can be added to the message, false if the message + * has no room for the mask + */ + bool has_room(const std::string& mask) const + { + return ((str().size() + params.size() + mask.size() + 2 <= maxline) && + (modes < ServerInstance->Config->Limits.MaxModes)); + } + + /** Returns true if this message is empty (has no modes) + */ + bool empty() const + { + return (modes == 0); + } +}; + +struct TreeSocket::BurstState +{ + SpanningTreeProtocolInterface::Server server; + BurstState(TreeSocket* sock) : server(sock) { } +}; /** 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 @@ -34,154 +106,101 @@ */ void TreeSocket::DoBurst(TreeServer* s) { - ServerInstance->SNO->WriteToSnoMask('l',"Bursting to \2%s\2 (Authentication: %s%s).", + ServerInstance->SNO->WriteToSnoMask('l',"Bursting to \002%s\002 (Authentication: %s%s).", s->GetName().c_str(), - capab->auth_fingerprint ? "SSL Fingerprint and " : "", + capab->auth_fingerprint ? "SSL certificate fingerprint and " : "", capab->auth_challenge ? "challenge-response" : "plaintext password"); this->CleanNegotiationInfo(); - this->WriteLine(":" + ServerInstance->Config->GetSID() + " BURST " + ConvToStr(ServerInstance->Time())); - /* send our version string */ - this->WriteLine(":" + ServerInstance->Config->GetSID() + " VERSION :"+ServerInstance->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_OnSyncNetwork,OnSyncNetwork(Utils->Creator,(void*)this)); - this->WriteLine(":" + ServerInstance->Config->GetSID() + " ENDBURST"); - ServerInstance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+ s->GetName()+"\2."); + this->WriteLine(CmdBuilder("BURST").push_int(ServerInstance->Time())); + // Introduce all servers behind us + this->SendServers(Utils->TreeRoot, s); + + BurstState bs(this); + // Introduce all users + this->SendUsers(bs); + + // Sync all channels + const chan_hash& chans = ServerInstance->GetChans(); + for (chan_hash::const_iterator i = chans.begin(); i != chans.end(); ++i) + SyncChannel(i->second, bs); + + // Send all xlines + this->SendXLines(); + FOREACH_MOD_CUSTOM(Utils->Creator->GetSyncEventProvider(), ServerProtocol::SyncEventListener, OnSyncNetwork, (bs.server)); + this->WriteLine(CmdBuilder("ENDBURST")); + ServerInstance->SNO->WriteToSnoMask('l',"Finished bursting to \002"+ s->GetName()+"\002."); + + this->burstsent = true; } -/** Recursively send the server tree with distances as hops. +void TreeSocket::SendServerInfo(TreeServer* from) +{ + // Send public version string + this->WriteLine(CommandSInfo::Builder(from, "version", from->GetVersion())); + + // Send full version string that contains more information and is shown to opers + this->WriteLine(CommandSInfo::Builder(from, "fullversion", from->GetFullVersion())); + + // Send the raw version string that just contains the base info + this->WriteLine(CommandSInfo::Builder(from, "rawversion", from->GetRawVersion())); +} + +/** Recursively send the server tree. * 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. + * end, our connection may be terminated. */ -void TreeSocket::SendServers(TreeServer* Current, TreeServer* s, int hops) +void TreeSocket::SendServers(TreeServer* Current, TreeServer* s) { - char command[1024]; - for (unsigned int q = 0; q < Current->ChildCount(); q++) + SendServerInfo(Current); + + const TreeServer::ChildServers& children = Current->GetChildren(); + for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i) { - TreeServer* recursive_server = Current->GetChild(q); + TreeServer* recursive_server = *i; if (recursive_server != s) { - std::string servername = Current->GetName(); - std::string recursive_servername = recursive_server->GetName(); - snprintf(command,1024,":%s SERVER %s * %d %s :%s", servername.c_str(), recursive_servername.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()); + this->WriteLine(CommandServer::Builder(recursive_server)); /* down to next level */ - this->SendServers(recursive_server, s, hops+1); + this->SendServers(recursive_server, s); } } } /** 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. + * If the length of a single line is too long, it is split over multiple lines. */ -void TreeSocket::SendFJoins(TreeServer* Current, Channel* c) +void TreeSocket::SendFJoins(Channel* c) { - std::string buffer; - char list[MAXBUF]; - - size_t curlen, headlen; - curlen = headlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu +%s :", - ServerInstance->Config->GetSID().c_str(), c->name.c_str(), (unsigned long)c->age, c->ChanModes(true)); - int numusers = 0; - char* ptr = list + curlen; - bool looped_once = false; - - const UserMembList *ulist = c->GetUsers(); - std::string modes; - std::string params; - - for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++) - { - size_t ptrlen = 0; - std::string modestr = i->second->modes; - - if ((curlen + modestr.length() + i->first->uuid.length() + 4) > 480) - { - // remove the final space - if (ptr[-1] == ' ') - ptr[-1] = '\0'; - buffer.append(list).append("\r\n"); - curlen = headlen; - ptr = list + headlen; - numusers = 0; - } - - ptrlen = snprintf(ptr, MAXBUF-curlen, "%s,%s ", modestr.c_str(), i->first->uuid.c_str()); - - looped_once = true; + CommandFJoin::Builder fjoin(c); - curlen += ptrlen; - ptr += ptrlen; - - numusers++; - } - - // Okay, permanent channels will (of course) need this \r\n anyway, numusers check is if there - // actually were people in the channel (looped_once == true) - if (!looped_once || numusers > 0) - { - // remove the final space - if (ptr[-1] == ' ') - ptr[-1] = '\0'; - buffer.append(list).append("\r\n"); - } - - int linesize = 1; - for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++) + const Channel::MemberMap& ulist = c->GetUsers(); + for (Channel::MemberMap::const_iterator i = ulist.begin(); i != ulist.end(); ++i) { - int size = b->data.length() + 2; - int currsize = linesize + size; - if (currsize <= 350) + Membership* memb = i->second; + if (!fjoin.has_room(memb)) { - modes.append("b"); - params.append(" ").append(b->data); - linesize += size; - } - if ((modes.length() >= ServerInstance->Config->Limits.MaxModes) || (currsize > 350)) - { - /* Wrap at MAXMODES */ - buffer.append(":").append(ServerInstance->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; + // No room for this user, send the line and prepare a new one + this->WriteLine(fjoin.finalize()); + fjoin.clear(); } + fjoin.add(memb); } - - /* Only send these if there are any */ - if (!modes.empty()) - buffer.append(":").append(ServerInstance->Config->GetSID()).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params); - - this->WriteLine(buffer); + this->WriteLine(fjoin.finalize()); } -/** Send G, Q, Z and E lines */ -void TreeSocket::SendXLines(TreeServer* Current) +/** Send all XLines we know about */ +void TreeSocket::SendXLines() { - char data[MAXBUF]; - std::string n = ServerInstance->Config->GetSID(); - const char* sn = n.c_str(); - std::vector types = ServerInstance->XLines->GetAllTypes(); - time_t current = ServerInstance->Time(); - for (std::vector::iterator it = types.begin(); it != types.end(); ++it) + for (std::vector::const_iterator it = types.begin(); it != types.end(); ++it) { + /* Expired lines are removed in XLineManager::GetAll() */ XLineLookup* lookup = ServerInstance->XLines->GetAll(*it); + /* lookup cannot be NULL in this case but a check won't hurt */ if (lookup) { for (LookupIter i = lookup->begin(); i != lookup->end(); ++i) @@ -192,97 +211,99 @@ void TreeSocket::SendXLines(TreeServer* Current) if (!i->second->IsBurstable()) break; - /* If it's expired, don't bother to burst it - */ - if (i->second->duration && current > i->second->expiry) - continue; - - snprintf(data,MAXBUF,":%s ADDLINE %s %s %s %lu %lu :%s",sn, it->c_str(), i->second->Displayable(), - i->second->source.c_str(), - (unsigned long)i->second->set_time, - (unsigned long)i->second->duration, - i->second->reason.c_str()); - this->WriteLine(data); + this->WriteLine(CommandAddLine::Builder(i->second)); } } } } -/** Send channel modes and topics */ -void TreeSocket::SendChannelModes(TreeServer* Current) +void TreeSocket::SendListModes(Channel* chan) { - char data[MAXBUF]; - std::deque list; - std::string n = ServerInstance->Config->GetSID(); - const char* sn = n.c_str(); - for (chan_hash::iterator c = ServerInstance->chanlist->begin(); c != ServerInstance->chanlist->end(); c++) + FModeBuilder fmode(chan); + const ModeParser::ListModeList& listmodes = ServerInstance->Modes->GetListModes(); + for (ModeParser::ListModeList::const_iterator i = listmodes.begin(); i != listmodes.end(); ++i) { - SendFJoins(Current, c->second); - if (!c->second->topic.empty()) - { - snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s", sn, c->second->name.c_str(), (unsigned long)c->second->topicset, c->second->setby.c_str(), c->second->topic.c_str()); - this->WriteLine(data); - } + ListModeBase* mh = *i; + ListModeBase::ModeList* list = mh->GetList(chan); + if (!list) + continue; - for(Extensible::ExtensibleStore::const_iterator i = c->second->GetExtList().begin(); i != c->second->GetExtList().end(); i++) + // Add all items on the list to the FMODE, send it whenever it becomes too long + const char modeletter = mh->GetModeChar(); + for (ListModeBase::ModeList::const_iterator j = list->begin(); j != list->end(); ++j) { - ExtensionItem* item = i->first; - std::string value = item->serialize(FORMAT_NETWORK, c->second, i->second); - if (!value.empty()) - Utils->Creator->ProtoSendMetaData(this, c->second, item->name, value); + const std::string& mask = j->mask; + if (!fmode.has_room(mask)) + { + // No room for this mask, send the current line as-is then add the mask to a + // new, empty FMODE message + this->WriteLine(fmode.finalize()); + fmode.clear(); + } + fmode.push_mode(modeletter, mask); } + } + + if (!fmode.empty()) + this->WriteLine(fmode.finalize()); +} - FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(c->second,Utils->Creator,this)); +/** Send channel users, topic, modes and global metadata */ +void TreeSocket::SyncChannel(Channel* chan, BurstState& bs) +{ + SendFJoins(chan); + + // If the topic was ever set, send it, even if it's empty now + // because a new empty topic should override an old non-empty topic + if (chan->topicset != 0) + this->WriteLine(CommandFTopic::Builder(chan)); + + SendListModes(chan); + + for (Extensible::ExtensibleStore::const_iterator i = chan->GetExtList().begin(); i != chan->GetExtList().end(); i++) + { + ExtensionItem* item = i->first; + std::string value = item->ToNetwork(chan, i->second); + if (!value.empty()) + this->WriteLine(CommandMetadata::Builder(chan, item->name, value)); } + + FOREACH_MOD_CUSTOM(Utils->Creator->GetSyncEventProvider(), ServerProtocol::SyncEventListener, OnSyncChannel, (chan, bs.server)); } -/** send all users and their oper state/modes */ -void TreeSocket::SendUsers(TreeServer* Current) +void TreeSocket::SyncChannel(Channel* chan) { - char data[MAXBUF]; - std::string dataline; - for (user_hash::iterator u = ServerInstance->Users->clientlist->begin(); u != ServerInstance->Users->clientlist->end(); u++) + BurstState bs(this); + SyncChannel(chan, bs); +} + +/** Send all users and their state, including oper and away status and global metadata */ +void TreeSocket::SendUsers(BurstState& bs) +{ + const user_hash& users = ServerInstance->Users->GetUsers(); + for (user_hash::const_iterator u = users.begin(); u != users.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 %lu +%s :%s", - theirserver->GetID().c_str(), /* Prefix: SID */ - u->second->uuid.c_str(), /* 0: UUID */ - (unsigned long)u->second->age, /* 1: TS */ - u->second->nick.c_str(), /* 2: Nick */ - u->second->host.c_str(), /* 3: Displayed Host */ - u->second->dhost.c_str(), /* 4: Real host */ - u->second->ident.c_str(), /* 5: Ident */ - u->second->GetIPString(), /* 6: IP string */ - (unsigned long)u->second->signon, /* 7: Signon time for WHOWAS */ - u->second->FormatModes(true), /* 8...n: Modes and params */ - u->second->fullname.c_str()); /* size-1: GECOS */ - this->WriteLine(data); - if (IS_OPER(u->second)) - { - snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->uuid.c_str(), u->second->oper->name.c_str()); - this->WriteLine(data); - } - if (IS_AWAY(u->second)) - { - snprintf(data,MAXBUF,":%s AWAY %ld :%s", u->second->uuid.c_str(), (long)u->second->awaytime, u->second->awaymsg.c_str()); - this->WriteLine(data); - } - } + User* user = u->second; + if (user->registered != REG_ALL) + continue; - for(Extensible::ExtensibleStore::const_iterator i = u->second->GetExtList().begin(); i != u->second->GetExtList().end(); i++) - { - ExtensionItem* item = i->first; - std::string value = item->serialize(FORMAT_NETWORK, u->second, i->second); - if (!value.empty()) - Utils->Creator->ProtoSendMetaData(this, u->second, item->name, value); - } + this->WriteLine(CommandUID::Builder(user)); + + if (user->IsOper()) + this->WriteLine(CommandOpertype::Builder(user)); + + if (user->IsAway()) + this->WriteLine(CommandAway::Builder(user)); - FOREACH_MOD(I_OnSyncUser,OnSyncUser(u->second,Utils->Creator,this)); + const Extensible::ExtensibleStore& exts = user->GetExtList(); + for (Extensible::ExtensibleStore::const_iterator i = exts.begin(); i != exts.end(); ++i) + { + ExtensionItem* item = i->first; + std::string value = item->ToNetwork(u->second, i->second); + if (!value.empty()) + this->WriteLine(CommandMetadata::Builder(user, item->name, value)); } + + FOREACH_MOD_CUSTOM(Utils->Creator->GetSyncEventProvider(), ServerProtocol::SyncEventListener, OnSyncUser, (user, bs.server)); } } -