src/modules/m_spanningtree/netburst.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "commands/cmd_whois.h"
  16 #include "commands/cmd_stats.h"
  17 #include "socket.h"
  18 #include "wildcard.h"
  19 #include "xline.h"
  20 #include "transport.h"
  21 #include "m_hash.h"
  22 #include "socketengine.h"
  23
  24 #include "m_spanningtree/main.h"
  25 #include "m_spanningtree/utils.h"
  26 #include "m_spanningtree/treeserver.h"
  27 #include "m_spanningtree/link.h"
  28 #include "m_spanningtree/treesocket.h"
  29 #include "m_spanningtree/resolvers.h"
  30 #include "m_spanningtree/handshaketimer.h"
  31
  32 /* $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 */
  33
  34 /** This function is called when we want to send a netburst to a local
  35  * server. There is a set order we must do this, because for example
  36  * users require their servers to exist, and channels require their
  37  * users to exist. You get the idea.
  38  */
  39 void TreeSocket::DoBurst(TreeServer* s)
  40 {
  41         std::string name = s->GetName();
  42         std::string burst = ":" + this->Instance->Config->GetSID() + " BURST " +ConvToStr(Instance->Time(true));
  43         std::string endburst = ":" + this->Instance->Config->GetSID() + " ENDBURST";
  44         this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2%s\2 (Authentication: %s).", name.c_str(), this->GetTheirChallenge().empty() ? "plaintext password" : "SHA256-HMAC challenge-response");
  45         this->WriteLine(burst);
  46         /* send our version string */
  47         this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" VERSION :"+this->Instance->GetVersionString());
  48         /* Send server tree */
  49         this->SendServers(Utils->TreeRoot,s,1);
  50         /* Send users and their oper status */
  51         this->SendUsers(s);
  52         /* Send everything else (channel modes, xlines etc) */
  53         this->SendChannelModes(s);
  54         this->SendXLines(s);
  55         FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this));
  56         this->WriteLine(endburst);
  57         this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
  58 }
  59
  60 /** Recursively send the server tree with distances as hops.
  61  * This is used during network burst to inform the other server
  62  * (and any of ITS servers too) of what servers we know about.
  63  * If at any point any of these servers already exist on the other
  64  * end, our connection may be terminated. The hopcounts given
  65  * by this function are relative, this doesn't matter so long as
  66  * they are all >1, as all the remote servers re-calculate them
  67  * to be relative too, with themselves as hop 0.
  68  */
  69 void TreeSocket::SendServers(TreeServer* Current, TreeServer* s, int hops)
  70 {
  71         char command[1024];
  72         for (unsigned int q = 0; q < Current->ChildCount(); q++)
  73         {
  74                 TreeServer* recursive_server = Current->GetChild(q);
  75                 if (recursive_server != s)
  76                 {
  77                         snprintf(command,1024,":%s SERVER %s * %d %s :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,
  78                                         recursive_server->GetID().c_str(),
  79                                         recursive_server->GetDesc().c_str());
  80                         this->WriteLine(command);
  81                         this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
  82                         /* down to next level */
  83                         this->SendServers(recursive_server, s, hops+1);
  84                 }
  85         }
  86 }
  87
  88 /** Send one or more FJOINs for a channel of users.
  89  * If the length of a single line is more than 480-NICKMAX
  90  * in length, it is split over multiple lines.
  91  */
  92 void TreeSocket::SendFJoins(TreeServer* Current, Channel* c)
  93 {
  94         std::string buffer;
  95         char list[MAXBUF];
  96         std::string individual_halfops = std::string(":")+this->Instance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age);
  97
  98         size_t dlen, curlen;
  99         dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->GetSID().c_str(),c->name,(unsigned long)c->age);
 100         int numusers = 1;
 101         char* ptr = list + dlen;
 102
 103         CUList *ulist = c->GetUsers();
 104         std::string modes;
 105         std::string params;
 106
 107         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 108         {
 109                 // The first parameter gets a : before it
 110                 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->first), i->first->uuid);
 111
 112                 curlen += ptrlen;
 113                 ptr += ptrlen;
 114
 115                 numusers++;
 116
 117                 if (curlen > (480-NICKMAX))
 118                 {
 119                         buffer.append(list).append("\r\n");
 120                         dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->GetSID().c_str(),c->name,(unsigned long)c->age);
 121                         ptr = list + dlen;
 122                         ptrlen = 0;
 123                         numusers = 0;
 124                 }
 125         }
 126
 127         if (numusers)
 128                 buffer.append(list).append("\r\n");
 129
 130         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");
 131
 132         int linesize = 1;
 133         for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
 134         {
 135                 int size = strlen(b->data) + 2;
 136                 int currsize = linesize + size;
 137                 if (currsize <= 350)
 138                 {
 139                         modes.append("b");
 140                         params.append(" ").append(b->data);
 141                         linesize += size;
 142                 }
 143                 if ((params.length() >= MAXMODES) || (currsize > 350))
 144                 {
 145                         /* Wrap at MAXMODES */
 146                         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");
 147                         modes.clear();
 148                         params.clear();
 149                         linesize = 1;
 150                 }
 151         }
 152
 153         /* Only send these if there are any */
 154         if (!modes.empty())
 155                 buffer.append(":").append(this->Instance->Config->GetSID()).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params);
 156
 157         this->WriteLine(buffer);
 158 }
 159
 160 /** Send G, Q, Z and E lines */
 161 void TreeSocket::SendXLines(TreeServer* Current)
 162 {
 163         char data[MAXBUF];
 164         std::string buffer;
 165         std::string n = this->Instance->Config->GetSID();
 166         const char* sn = n.c_str();
 167
 168         std::vector<std::string> types = Instance->XLines->GetAllTypes();
 169
 170         for (std::vector<std::string>::iterator it = types.begin(); it != types.end(); ++it)
 171         {
 172                 XLineLookup* lookup = Instance->XLines->GetAll(*it);
 173
 174                 if (lookup)
 175                 {
 176                         for (LookupIter i = lookup->begin(); i != lookup->end(); ++i)
 177                         {
 178                                 snprintf(data,MAXBUF,":%s ADDLINE %s %s %s %lu %lu :%s\r\n",sn, it->c_str(), i->second->Displayable(),
 179                                                 i->second->source,
 180                                                 (unsigned long)i->second->set_time,
 181                                                 (unsigned long)i->second->duration,
 182                                                 i->second->reason);
 183                                 buffer.append(data);
 184                         }
 185                 }
 186         }
 187
 188         if (!buffer.empty())
 189                 this->WriteLine(buffer);
 190 }
 191
 192 /** Send channel modes and topics */
 193 void TreeSocket::SendChannelModes(TreeServer* Current)
 194 {
 195         char data[MAXBUF];
 196         std::deque<std::string> list;
 197         std::string n = this->Instance->Config->GetSID();
 198         const char* sn = n.c_str();
 199         Instance->Log(DEBUG,"Sending channels and modes, %d to send", this->Instance->chanlist->size());
 200         for (chan_hash::iterator c = this->Instance->chanlist->begin(); c != this->Instance->chanlist->end(); c++)
 201         {
 202                 SendFJoins(Current, c->second);
 203                 if (*c->second->topic)
 204                 {
 205                         snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
 206                         this->WriteLine(data);
 207                 }
 208                 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this));
 209                 list.clear();
 210                 c->second->GetExtList(list);
 211                 for (unsigned int j = 0; j < list.size(); j++)
 212                 {
 213                         FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j]));
 214                 }
 215         }
 216 }
 217
 218 /** send all users and their oper state/modes */
 219 void TreeSocket::SendUsers(TreeServer* Current)
 220 {
 221         char data[MAXBUF];
 222         std::deque<std::string> list;
 223         std::string dataline;
 224         for (user_hash::iterator u = this->Instance->Users->clientlist->begin(); u != this->Instance->Users->clientlist->end(); u++)
 225         {
 226                 if (u->second->registered == REG_ALL)
 227                 {
 228                         TreeServer* theirserver = Utils->FindServer(u->second->server);
 229                         if (theirserver)
 230                         {
 231                                 snprintf(data,MAXBUF,":%s UID %s %lu %s %s %s %s +%s %s %lu :%s", theirserver->GetID().c_str(), u->second->uuid,
 232                                                 (unsigned long)u->second->age, u->second->nick, u->second->host, u->second->dhost,
 233                                                 u->second->ident, u->second->FormatModes(), u->second->GetIPString(),
 234                                                 (unsigned long)u->second->signon, u->second->fullname);
 235                                 this->WriteLine(data);
 236                                 if (*u->second->oper)
 237                                 {
 238                                         snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->uuid, u->second->oper);
 239                                         this->WriteLine(data);
 240                                 }
 241                                 if (*u->second->awaymsg)
 242                                 {
 243                                         snprintf(data,MAXBUF,":%s AWAY :%s", u->second->uuid, u->second->awaymsg);
 244                                         this->WriteLine(data);
 245                                 }
 246                         }
 247
 248                         FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this));
 249                         list.clear();
 250                         u->second->GetExtList(list);
 251                         for (unsigned int j = 0; j < list.size(); j++)
 252                         {
 253                                 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j]));
 254                         }
 255                 }
 256         }
 257 }
 258