src/modules/m_spanningtree/netburst.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
   7  *
   8  * This file is part of InspIRCd.  InspIRCd is free software: you can
   9  * redistribute it and/or modify it under the terms of the GNU General Public
  10  * License as published by the Free Software Foundation, version 2.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  14  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  15  * details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21
  22 #include "inspircd.h"
  23 #include "xline.h"
  24 #include "listmode.h"
  25
  26 #include "treesocket.h"
  27 #include "treeserver.h"
  28 #include "main.h"
  29
  30 /** This function is called when we want to send a netburst to a local
  31  * server. There is a set order we must do this, because for example
  32  * users require their servers to exist, and channels require their
  33  * users to exist. You get the idea.
  34  */
  35 void TreeSocket::DoBurst(TreeServer* s)
  36 {
  37         ServerInstance->SNO->WriteToSnoMask('l',"Bursting to \2%s\2 (Authentication: %s%s).",
  38                 s->GetName().c_str(),
  39                 capab->auth_fingerprint ? "SSL Fingerprint and " : "",
  40                 capab->auth_challenge ? "challenge-response" : "plaintext password");
  41         this->CleanNegotiationInfo();
  42         this->WriteLine(":" + ServerInstance->Config->GetSID() + " BURST " + ConvToStr(ServerInstance->Time()));
  43         /* send our version string */
  44         this->WriteLine(":" + ServerInstance->Config->GetSID() + " VERSION :"+ServerInstance->GetVersionString());
  45         /* Send server tree */
  46         this->SendServers(Utils->TreeRoot, s);
  47         /* Send users and their oper status */
  48         this->SendUsers();
  49
  50         for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); ++i)
  51                 SyncChannel(i->second);
  52
  53         this->SendXLines();
  54         FOREACH_MOD(OnSyncNetwork, (Utils->Creator,(void*)this));
  55         this->WriteLine(":" + ServerInstance->Config->GetSID() + " ENDBURST");
  56         ServerInstance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+ s->GetName()+"\2.");
  57 }
  58
  59 /** Recursively send the server tree.
  60  * This is used during network burst to inform the other server
  61  * (and any of ITS servers too) of what servers we know about.
  62  * If at any point any of these servers already exist on the other
  63  * end, our connection may be terminated.
  64  * The hopcount parameter (3rd) is deprecated, and is always 0.
  65  */
  66 void TreeSocket::SendServers(TreeServer* Current, TreeServer* s)
  67 {
  68         for (unsigned int q = 0; q < Current->ChildCount(); q++)
  69         {
  70                 TreeServer* recursive_server = Current->GetChild(q);
  71                 if (recursive_server != s)
  72                 {
  73                         this->WriteLine(InspIRCd::Format(":%s SERVER %s * 0 %s :%s", Current->GetID().c_str(),
  74                                 recursive_server->GetName().c_str(), recursive_server->GetID().c_str(), recursive_server->GetDesc().c_str()));
  75                         this->WriteLine(":" + recursive_server->GetID() + " VERSION :" + recursive_server->GetVersion());
  76                         /* down to next level */
  77                         this->SendServers(recursive_server, s);
  78                 }
  79         }
  80 }
  81
  82 /** Send one or more FJOINs for a channel of users.
  83  * If the length of a single line is more than 480-NICKMAX
  84  * in length, it is split over multiple lines.
  85  * Send one or more FMODEs for a channel with the
  86  * channel bans, if there's any.
  87  */
  88 void TreeSocket::SendFJoins(Channel* c)
  89 {
  90         std::string line(":");
  91         line.append(ServerInstance->Config->GetSID()).append(" FJOIN ").append(c->name).append(1, ' ').append(ConvToStr(c->age)).append(" +");
  92         std::string::size_type erase_from = line.length();
  93         line.append(c->ChanModes(true)).append(" :");
  94
  95         const UserMembList *ulist = c->GetUsers();
  96
  97         for (UserMembCIter i = ulist->begin(); i != ulist->end(); ++i)
  98         {
  99                 const std::string& modestr = i->second->modes;
 100                 if ((line.length() + modestr.length() + UIDGenerator::UUID_LENGTH + 2) > 480)
 101                 {
 102                         this->WriteLine(line);
 103                         line.erase(erase_from);
 104                         line.append(" :");
 105                 }
 106                 line.append(modestr).append(1, ',').append(i->first->uuid).push_back(' ');
 107         }
 108         this->WriteLine(line);
 109
 110         ChanModeReference ban(NULL, "ban");
 111         static_cast<ListModeBase*>(*ban)->DoSyncChannel(c, Utils->Creator, this);
 112 }
 113
 114 /** Send all XLines we know about */
 115 void TreeSocket::SendXLines()
 116 {
 117         std::vector<std::string> types = ServerInstance->XLines->GetAllTypes();
 118
 119         for (std::vector<std::string>::const_iterator it = types.begin(); it != types.end(); ++it)
 120         {
 121                 /* Expired lines are removed in XLineManager::GetAll() */
 122                 XLineLookup* lookup = ServerInstance->XLines->GetAll(*it);
 123
 124                 /* lookup cannot be NULL in this case but a check won't hurt */
 125                 if (lookup)
 126                 {
 127                         for (LookupIter i = lookup->begin(); i != lookup->end(); ++i)
 128                         {
 129                                 /* Is it burstable? this is better than an explicit check for type 'K'.
 130                                  * We break the loop as NONE of the items in this group are worth iterating.
 131                                  */
 132                                 if (!i->second->IsBurstable())
 133                                         break;
 134
 135                                 this->WriteLine(InspIRCd::Format(":%s ADDLINE %s %s %s %lu %lu :%s",
 136                                         ServerInstance->Config->GetSID().c_str(),
 137                                         it->c_str(),
 138                                         i->second->Displayable().c_str(),
 139                                         i->second->source.c_str(),
 140                                         (unsigned long)i->second->set_time,
 141                                         (unsigned long)i->second->duration,
 142                                         i->second->reason.c_str()));
 143                         }
 144                 }
 145         }
 146 }
 147
 148 /** Send channel topic, modes and metadata */
 149 void TreeSocket::SyncChannel(Channel* chan)
 150 {
 151         SendFJoins(chan);
 152
 153         // If the topic was ever set, send it, even if it's empty now
 154         // because a new empty topic should override an old non-empty topic
 155         if (chan->topicset != 0)
 156         {
 157                 this->WriteLine(InspIRCd::Format(":%s FTOPIC %s %lu %lu %s :%s", ServerInstance->Config->GetSID().c_str(),
 158                         chan->name.c_str(), (unsigned long)chan->age, (unsigned long)chan->topicset,
 159                         chan->setby.c_str(), chan->topic.c_str()));
 160         }
 161
 162         for (Extensible::ExtensibleStore::const_iterator i = chan->GetExtList().begin(); i != chan->GetExtList().end(); i++)
 163         {
 164                 ExtensionItem* item = i->first;
 165                 std::string value = item->serialize(FORMAT_NETWORK, chan, i->second);
 166                 if (!value.empty())
 167                         Utils->Creator->ProtoSendMetaData(this, chan, item->name, value);
 168         }
 169
 170         FOREACH_MOD(OnSyncChannel, (chan, Utils->Creator, this));
 171 }
 172
 173 /** send all users and their oper state/modes */
 174 void TreeSocket::SendUsers()
 175 {
 176         for (user_hash::iterator u = ServerInstance->Users->clientlist->begin(); u != ServerInstance->Users->clientlist->end(); u++)
 177         {
 178                 if (u->second->registered == REG_ALL)
 179                 {
 180                         TreeServer* theirserver = Utils->FindServer(u->second->server);
 181                         if (theirserver)
 182                         {
 183                                 this->WriteLine(InspIRCd::Format(":%s UID %s %lu %s %s %s %s %s %lu +%s :%s",
 184                                         theirserver->GetID().c_str(),     // Prefix: SID
 185                                         u->second->uuid.c_str(),          // 0: UUID
 186                                         (unsigned long)u->second->age,    // 1: TS
 187                                         u->second->nick.c_str(),          // 2: Nick
 188                                         u->second->host.c_str(),          // 3: Real host
 189                                         u->second->dhost.c_str(),         // 4: Display host
 190                                         u->second->ident.c_str(),         // 5: Ident
 191                                         u->second->GetIPString().c_str(), // 6: IP address
 192                                         (unsigned long)u->second->signon, // 7: Signon time
 193                                         u->second->FormatModes(true),     // 8...n: User modes and params
 194                                         u->second->fullname.c_str()));    // size-1: GECOS
 195
 196                                 if (u->second->IsOper())
 197                                 {
 198                                         this->WriteLine(InspIRCd::Format(":%s OPERTYPE :%s", u->second->uuid.c_str(), u->second->oper->name.c_str()));
 199                                 }
 200                                 if (u->second->IsAway())
 201                                 {
 202                                         this->WriteLine(InspIRCd::Format(":%s AWAY %ld :%s", u->second->uuid.c_str(), (long)u->second->awaytime,
 203                                                 u->second->awaymsg.c_str()));
 204                                 }
 205                         }
 206
 207                         for(Extensible::ExtensibleStore::const_iterator i = u->second->GetExtList().begin(); i != u->second->GetExtList().end(); i++)
 208                         {
 209                                 ExtensionItem* item = i->first;
 210                                 std::string value = item->serialize(FORMAT_NETWORK, u->second, i->second);
 211                                 if (!value.empty())
 212                                         Utils->Creator->ProtoSendMetaData(this, u->second, item->name, value);
 213                         }
 214
 215                         FOREACH_MOD(OnSyncUser, (u->second,Utils->Creator,this));
 216                 }
 217         }
 218 }
 219