- {
- 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.
- */
-
- if (smode)
- DELETE(who);
-
- return true;
-}
-
-/** FTOPIC command */
-bool TreeSocket::ForceTopic(const std::string &source, std::deque<std::string> ¶ms)
-{
- if (params.size() != 4)
- return true;
- time_t ts = atoi(params[1].c_str());
- std::string nsource = source;
- chanrec* 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])
- {
- userrec* 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<std::string> ¶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() < 3)
- return true;
-
- irc::modestacker modestack(true); /* Modes to apply from the users in the user list */
- userrec* 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[2]); /* Users from the user list */
- bool apply_other_sides_modes = true; /* True if we are accepting the other side's modes */
- chanrec* 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 */
-
- 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 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<std::string> 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->ServerName, 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->FindNick(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);
-
- chanrec::JoinUser(this->Instance, who, channel.c_str(), 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<std::string> stackresult;
- const char* mode_junk[MAXMODES+2];
- userrec* n = new userrec(Instance);
- n->SetFd(FD_MAGIC_NUMBER);
- 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, n);
- }
-
- delete n;
- }
-
- return true;
-}
-
-/** NICK command */
-bool TreeSocket::IntroduceClient(const std::string &source, std::deque<std::string> ¶ms)
-{
- /** Do we have enough parameters:
- * NICK age nick host dhost ident +modes ip :gecos
- */
- if (params.size() != 8)
- {
- this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
- return true;
- }
-
- time_t age = ConvToInt(params[0]);
- const char* tempnick = params[1].c_str();
- std::string empty;
-
- cmd_validation valid[] = { {"Nickname", 1, NICKMAX}, {"Hostname", 2, 64}, {"Displayed hostname", 3, 64}, {"Ident", 4, IDENTMAX}, {"GECOS", 7, MAXGECOS}, {"", 0, 0} };
-
- TreeServer* remoteserver = Utils->FindServer(source);
- if (!remoteserver)
- {
- this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :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->ServerName+" KILL "+params[1]+" :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->ServerName+" KILL "+params[1]+" :Invalid client introduction (" + valid[x].item + " > " + ConvToStr(valid[x].length) + ")");
- return true;
- }
- }
-
- /** Our client looks ok, lets introduce it now
- */
- Instance->Log(DEBUG,"New remote client %s",tempnick);
- user_hash::iterator iter = this->Instance->clientlist->find(tempnick);
-
- if (iter != this->Instance->clientlist->end())
- {
- /* nick collision */
- this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
- userrec::QuitUser(this->Instance, iter->second, "Nickname collision");
- return true;
- }
-
- userrec* _new = new userrec(this->Instance);
- (*(this->Instance->clientlist))[tempnick] = _new;
- _new->SetFd(FD_MAGIC_NUMBER);
- strlcpy(_new->nick, tempnick,NICKMAX-1);
- strlcpy(_new->host, params[2].c_str(),64);
- strlcpy(_new->dhost, params[3].c_str(),64);
- _new->server = this->Instance->FindServerNamePtr(source.c_str());
- strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
- strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
- _new->registered = REG_ALL;
- _new->signon = age;
-
- /* we need to remove the + from the modestring, so we can do our stuff */
- std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
- if (pos_after_plus != std::string::npos)
- params[5] = params[5].substr(pos_after_plus);
-
- for (std::string::iterator v = params[5].begin(); v != params[5].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[5] = "+" + params[5];
-
-#ifdef SUPPORT_IP6LINKS
- if (params[6].find_first_of(":") != std::string::npos)
- _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
- else
-#endif
- _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
-
- Instance->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[7] = ":" + params[7];
- Utils->DoOneToAllButSender(source,"NICK", params, source);
-
- // Increment the Source Servers User Count..
- TreeServer* SourceServer = Utils->FindServer(source);
- if (SourceServer)
- {
- SourceServer->AddUserCount();
- }
-
- FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new));
-
- return true;
-}
-
-/** 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.
- */
-void TreeSocket::SendFJoins(TreeServer* Current, chanrec* c)
-{
- std::string buffer;
- char list[MAXBUF];
- std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
-
- size_t dlen, curlen;
- dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
- int numusers = 0;
- char* ptr = list + dlen;
-
- CUList *ulist = c->GetUsers();
- std::string modes;
- std::string params;
-
- for (CUList::iterator 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->nick);
-
- curlen += ptrlen;
- ptr += ptrlen;
-
- numusers++;
-
- if (curlen > (480-NICKMAX))
- {
- buffer.append(list).append("\r\n");
- dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,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->ServerName).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->ServerName).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->ServerName).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->ServerName;
- const char* sn = n.c_str();
- /* Yes, these arent too nice looking, but they get the job done */
- for (std::vector<ZLine*>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<QLine*>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<GLine*>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<ELine*>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<ZLine*>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<QLine*>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<GLine*>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
- buffer.append(data);
- }
- for (std::vector<ELine*>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++)
- {
- snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->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<std::string> list;
- std::string n = this->Instance->Config->ServerName;
- 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<std::string> 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)
- {
- snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->FormatModes(),u->second->GetIPString(),u->second->fullname);
- this->WriteLine(data);
- if (*u->second->oper)
- {
- snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->nick, u->second->oper);
- this->WriteLine(data);
- }
- if (*u->second->awaymsg)
- {
- snprintf(data,MAXBUF,":%s AWAY :%s", u->second->nick, u->second->awaymsg);
- this->WriteLine(data);
- }
- }
- }
- for (user_hash::iterator u = this->Instance->clientlist->begin(); u != this->Instance->clientlist->end(); u++)
- {
- 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 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)
-{
- 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->ServerName+" 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.");