X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Fnetburst.cpp;h=f96e47d6053ea0722f12d56798cb2ea7467cbd8a;hb=1d020d132ff6d05ffd865d025cf161d7637f10d8;hp=002845af3bff534abc5756994df6c0b23dc2e4ee;hpb=488ea09da27c89bb486e9de25d506b357631e3df;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/netburst.cpp b/src/modules/m_spanningtree/netburst.cpp index 002845af3..f96e47d60 100644 --- a/src/modules/m_spanningtree/netburst.cpp +++ b/src/modules/m_spanningtree/netburst.cpp @@ -1,35 +1,99 @@ -/* +------------------------------------+ - * | 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 Daniel De Graaf + * Copyright (C) 2008 Robin Burchell + * Copyright (C) 2008 Craig Edwards * - * 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 "listmode.h" + +#include "treesocket.h" +#include "treeserver.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)); + } -#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" + /** Returns true if this message is empty (has no modes) + */ + bool empty() const + { + return (modes == 0); + } +}; -/* $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 */ +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 @@ -38,49 +102,58 @@ */ 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()); + ServerInstance->SNO->WriteToSnoMask('l',"Bursting to \2%s\2 (Authentication: %s%s).", + s->GetName().c_str(), + capab->auth_fingerprint ? "SSL Fingerprint and " : "", + capab->auth_challenge ? "challenge-response" : "plaintext password"); + this->CleanNegotiationInfo(); + this->WriteLine(CmdBuilder("BURST").push_int(ServerInstance->Time())); /* Send server tree */ - this->SendServers(Utils->TreeRoot,s,1); + this->SendServers(Utils->TreeRoot, s); + + BurstState bs(this); /* 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->SendUsers(bs); + + const chan_hash& chans = ServerInstance->GetChans(); + for (chan_hash::const_iterator i = chans.begin(); i != chans.end(); ++i) + SyncChannel(i->second, bs); + + this->SendXLines(); + FOREACH_MOD(OnSyncNetwork, (bs.server)); + this->WriteLine(CmdBuilder("ENDBURST")); + ServerInstance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+ s->GetName()+"\2."); +} + +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())); } -/** Recursively send the server tree with distances as hops. +/** 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. + * The hopcount parameter (3rd) is deprecated, and is always 0. */ -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) { - 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()); + this->WriteLine(CommandServer::Builder(recursive_server)); /* down to next level */ - this->SendServers(recursive_server, s, hops+1); + this->SendServers(recursive_server, s); } } } @@ -88,171 +161,144 @@ void TreeSocket::SendServers(TreeServer* Current, TreeServer* s, int hops) /** 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. + * Send one or more FMODEs for a channel with the + * channel bans, if there's any. */ -void TreeSocket::SendFJoins(TreeServer* Current, Channel* c) +void TreeSocket::SendFJoins(Channel* c) { - 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; + CommandFJoin::Builder fjoin(c); + const UserMembList *ulist = c->GetUsers(); - for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + for (UserMembCIter i = ulist->begin(); i != ulist->end(); ++i) { - // 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)) + Membership* memb = i->second; + if (!fjoin.has_room(memb)) { - 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; + // No room for this user, send the line and prepare a new one + this->WriteLine(fjoin.finalize()); + fjoin.clear(); } + fjoin.add(memb); } + this->WriteLine(fjoin.finalize()); +} - 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"); +/** Send all XLines we know about */ +void TreeSocket::SendXLines() +{ + std::vector types = ServerInstance->XLines->GetAllTypes(); - int linesize = 1; - for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++) + for (std::vector::const_iterator it = types.begin(); it != types.end(); ++it) { - 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)) + /* 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) { - /* 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; + for (LookupIter i = lookup->begin(); i != lookup->end(); ++i) + { + /* Is it burstable? this is better than an explicit check for type 'K'. + * We break the loop as NONE of the items in this group are worth iterating. + */ + if (!i->second->IsBurstable()) + break; + + this->WriteLine(CommandAddLine::Builder(i->second)); + } } } - - /* 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) +void TreeSocket::SendListModes(Channel* chan) { - 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) + FModeBuilder fmode(chan); + const ModeParser::ListModeList& listmodes = ServerInstance->Modes->GetListModes(); + for (ModeParser::ListModeList::const_iterator i = listmodes.begin(); i != listmodes.end(); ++i) { - XLineLookup* lookup = Instance->XLines->GetAll(*it); + ListModeBase* mh = *i; + ListModeBase::ModeList* list = mh->GetList(chan); + if (!list) + continue; - if (lookup) + // 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) { - for (LookupIter i = lookup->begin(); i != lookup->end(); ++i) + const std::string& mask = j->mask; + if (!fmode.has_room(mask)) { - 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); + // 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 (!buffer.empty()) - this->WriteLine(buffer); + if (!fmode.empty()) + this->WriteLine(fmode.finalize()); } -/** Send channel modes and topics */ -void TreeSocket::SendChannelModes(TreeServer* Current) +/** Send channel topic, modes and metadata */ +void TreeSocket::SyncChannel(Channel* chan, BurstState& bs) { - 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(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++) { - 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])); - } + ExtensionItem* item = i->first; + std::string value = item->serialize(FORMAT_NETWORK, chan, i->second); + if (!value.empty()) + this->WriteLine(CommandMetadata::Builder(chan, item->name, value)); } + + FOREACH_MOD(OnSyncChannel, (chan, bs.server)); +} + +void TreeSocket::SyncChannel(Channel* chan) +{ + BurstState bs(this); + SyncChannel(chan, bs); } /** send all users and their oper state/modes */ -void TreeSocket::SendUsers(TreeServer* Current) +void TreeSocket::SendUsers(BurstState& bs) { - 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++) + ProtocolInterface::Server& piserver = bs.server; + + 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 %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 (IS_OPER(u->second)) - { - snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->uuid, u->second->oper); - this->WriteLine(data); - } - if (IS_AWAY(u->second)) - { - snprintf(data,MAXBUF,":%s AWAY :%s", u->second->uuid, u->second->awaymsg); - this->WriteLine(data); - } - } + User* user = u->second; + if (user->registered != REG_ALL) + continue; - 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->WriteLine(CommandUID::Builder(user)); + + if (user->IsOper()) + this->WriteLine(CommandOpertype::Builder(user)); + + if (user->IsAway()) + this->WriteLine(CommandAway::Builder(user)); + + 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->serialize(FORMAT_NETWORK, u->second, i->second); + if (!value.empty()) + this->WriteLine(CommandMetadata::Builder(user, item->name, value)); } + + FOREACH_MOD(OnSyncUser, (user, piserver)); } } -