1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 #include "configreader.h"
18 #include "commands/cmd_whois.h"
19 #include "commands/cmd_stats.h"
24 #include "transport.h"
26 #include "socketengine.h"
28 #include "m_spanningtree/main.h"
29 #include "m_spanningtree/utils.h"
30 #include "m_spanningtree/treeserver.h"
31 #include "m_spanningtree/link.h"
32 #include "m_spanningtree/treesocket.h"
33 #include "m_spanningtree/resolvers.h"
34 #include "m_spanningtree/handshaketimer.h"
36 /* $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 */
39 /** Because most of the I/O gubbins are encapsulated within
40 * InspSocket, we just call the superclass constructor for
41 * most of the action, and append a few of our own values
44 TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, Module* HookMod)
45 : InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod)
48 this->LinkState = LISTENER;
49 theirchallenge = ourchallenge = "";
50 if (listening && Hook)
51 InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
54 TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, const std::string &ServerName, const std::string &bindto, Module* HookMod)
55 : InspSocket(SI, host, port, listening, maxtime, bindto), Utils(Util), Hook(HookMod)
58 theirchallenge = ourchallenge = "";
59 this->LinkState = CONNECTING;
61 InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
64 /** When a listening socket gives us a new file descriptor,
65 * we must associate it with a socket without creating a new
66 * connection. This constructor is used for this purpose.
68 TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, char* ip, Module* HookMod)
69 : InspSocket(SI, newfd, ip), Utils(Util), Hook(HookMod)
71 this->LinkState = WAIT_AUTH_1;
72 theirchallenge = ourchallenge = "";
73 /* If we have a transport module hooked to the parent, hook the same module to this
74 * socket, and set a timer waiting for handshake before we send CAPAB etc.
77 InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
79 Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(Utils->LinkBlocks[0]), this->Utils, 1));
82 ServerState TreeSocket::GetLinkState()
84 return this->LinkState;
87 Module* TreeSocket::GetHook()
92 TreeSocket::~TreeSocket()
95 InspSocketUnhookRequest(this, (Module*)Utils->Creator, Hook).Send();
97 Utils->DelBurstingServer(this);
100 const std::string& TreeSocket::GetOurChallenge()
102 return this->ourchallenge;
105 void TreeSocket::SetOurChallenge(const std::string &c)
107 this->ourchallenge = c;
110 const std::string& TreeSocket::GetTheirChallenge()
112 return this->theirchallenge;
115 void TreeSocket::SetTheirChallenge(const std::string &c)
117 this->theirchallenge = c;
120 std::string TreeSocket::MakePass(const std::string &password, const std::string &challenge)
122 /* This is a simple (maybe a bit hacky?) HMAC algorithm, thanks to jilles for
123 * suggesting the use of HMAC to secure the password against various attacks.
125 * Note: If m_sha256.so is not loaded, we MUST fall back to plaintext with no
126 * HMAC challenge/response.
128 Module* sha256 = Instance->FindModule("m_sha256.so");
129 if (Utils->ChallengeResponse && sha256 && !challenge.empty())
131 /* XXX: This is how HMAC is supposed to be done:
133 * sha256( (pass xor 0x5c) + sha256((pass xor 0x36) + m) )
135 * Note that we are encoding the hex hash, not the binary
136 * output of the hash which is slightly different to standard.
138 * Don't ask me why its always 0x5c and 0x36... it just is.
140 std::string hmac1, hmac2;
142 for (size_t n = 0; n < password.length(); n++)
144 hmac1 += static_cast<char>(password[n] ^ 0x5C);
145 hmac2 += static_cast<char>(password[n] ^ 0x36);
149 HashResetRequest(Utils->Creator, sha256).Send();
150 hmac2 = HashSumRequest(Utils->Creator, sha256, hmac2).Send();
152 HashResetRequest(Utils->Creator, sha256).Send();
153 std::string hmac = hmac1 + hmac2;
154 hmac = HashSumRequest(Utils->Creator, sha256, hmac).Send();
156 return "HMAC-SHA256:"+ hmac;
158 else if (!challenge.empty() && !sha256)
159 Instance->Log(DEFAULT,"Not authenticating to server using SHA256/HMAC because we don't have m_sha256 loaded!");
164 /** When an outbound connection finishes connecting, we receive
165 * this event, and must send our SERVER string to the other
166 * side. If the other side is happy, as outlined in the server
167 * to server docs on the inspircd.org site, the other side
168 * will then send back its own server string.
170 bool TreeSocket::OnConnected()
172 if (this->LinkState == CONNECTING)
174 /* we do not need to change state here. */
175 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
177 if (x->Name == this->myhost)
179 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] started.");
182 InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
183 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+x->Hook+"\2");
185 this->OutboundPass = x->SendPass;
187 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
189 Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(*x), this->Utils, 1));
191 this->SendCapabilities();
197 /* There is a (remote) chance that between the /CONNECT and the connection
198 * being accepted, some muppet has removed the <link> block and rehashed.
199 * If that happens the connection hangs here until it's closed. Unlikely
200 * and rather harmless.
202 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
206 void TreeSocket::OnError(InspSocketError e)
213 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused");
214 MyLink = Utils->FindLink(myhost);
216 Utils->DoFailOver(MyLink);
219 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Could not create socket");
222 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Error binding socket to address or port");
225 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: I/O error on connection");
227 case I_ERR_NOMOREFDS:
228 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Operating system is out of file descriptors!");
231 if ((errno) && (errno != EINPROGRESS) && (errno != EAGAIN))
233 std::string errstr = strerror(errno);
234 this->Instance->SNO->WriteToSnoMask('l',"Connection to \002"+myhost+"\002 failed with OS error: " + errstr);
240 int TreeSocket::OnDisconnect()
242 /* For the same reason as above, we don't
243 * handle OnDisconnect()
248 /** Recursively send the server tree with distances as hops.
249 * This is used during network burst to inform the other server
250 * (and any of ITS servers too) of what servers we know about.
251 * If at any point any of these servers already exist on the other
252 * end, our connection may be terminated. The hopcounts given
253 * by this function are relative, this doesn't matter so long as
254 * they are all >1, as all the remote servers re-calculate them
255 * to be relative too, with themselves as hop 0.
257 void TreeSocket::SendServers(TreeServer* Current, TreeServer* s, int hops)
260 for (unsigned int q = 0; q < Current->ChildCount(); q++)
262 TreeServer* recursive_server = Current->GetChild(q);
263 if (recursive_server != s)
265 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
266 this->WriteLine(command);
267 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
268 /* down to next level */
269 this->SendServers(recursive_server, s, hops+1);
274 std::string TreeSocket::MyCapabilities()
276 std::vector<std::string> modlist;
277 std::string capabilities = "";
278 for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
280 if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON)
281 modlist.push_back(this->Instance->Config->module_names[i]);
283 sort(modlist.begin(),modlist.end());
284 for (unsigned int i = 0; i < modlist.size(); i++)
287 capabilities = capabilities + ",";
288 capabilities = capabilities + modlist[i];
293 std::string TreeSocket::RandString(unsigned int length)
295 char* randombuf = new char[length+1];
297 int fd = open("/dev/urandom", O_RDONLY, 0);
301 read(fd, randombuf, length);
306 for (unsigned int i = 0; i < length; i++)
307 randombuf[i] = rand();
310 for (unsigned int i = 0; i < length; i++)
312 char randchar = static_cast<char>((randombuf[i] & 0x7F) | 0x21);
313 out += (randchar == '=' ? '_' : randchar);
320 void TreeSocket::SendCapabilities()
322 irc::commasepstream modulelist(MyCapabilities());
323 this->WriteLine("CAPAB START");
325 /* Send module names, split at 509 length */
326 std::string item = "*";
327 std::string line = "CAPAB MODULES ";
328 while ((item = modulelist.GetToken()) != "")
330 if (line.length() + item.length() + 1 > 509)
332 this->WriteLine(line);
333 line = "CAPAB MODULES ";
336 if (line != "CAPAB MODULES ")
341 if (line != "CAPAB MODULES ")
342 this->WriteLine(line);
349 #ifdef SUPPORT_IP6LINKS
353 /* Do we have sha256 available? If so, we send a challenge */
354 if (Utils->ChallengeResponse && (Instance->FindModule("m_sha256.so")))
356 this->SetOurChallenge(RandString(20));
357 extra = " CHALLENGE=" + this->GetOurChallenge();
360 this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion)+extra);
362 this->WriteLine("CAPAB END");
365 /* Check a comma seperated list for an item */
366 bool TreeSocket::HasItem(const std::string &list, const std::string &item)
368 irc::commasepstream seplist(list);
369 std::string item2 = "*";
370 while ((item2 = seplist.GetToken()) != "")
378 /* Isolate and return the elements that are different between two comma seperated lists */
379 std::string TreeSocket::ListDifference(const std::string &one, const std::string &two)
381 irc::commasepstream list_one(one);
382 std::string item = "*";
383 std::string result = "";
384 while ((item = list_one.GetToken()) != "")
386 if (!HasItem(two, item))
395 void TreeSocket::SendError(const std::string &errormessage)
397 this->WriteLine("ERROR :"+errormessage);
398 this->Instance->SNO->WriteToSnoMask('l',"Sent \2ERROR\2 to "+this->InboundServerName+": "+errormessage);
401 bool TreeSocket::Capab(const std::deque<std::string> ¶ms)
403 if (params.size() < 1)
405 this->SendError("Invalid number of parameters for CAPAB - Mismatched version");
408 if (params[0] == "START")
410 this->ModuleList = "";
411 this->CapKeys.clear();
413 else if (params[0] == "END")
415 std::string reason = "";
417 #ifdef SUPPORT_IP6LINKS
420 /* Compare ModuleList and check CapKeys...
421 * Maybe this could be tidier? -- Brain
423 if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
425 std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
428 diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
432 diff = "this server:" + diff;
434 if (diff.length() == 12)
435 reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
437 reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
439 if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
440 reason = "We don't both support linking to IPV6 servers";
441 if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
442 reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
443 if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
444 reason = "Maximum nickname lengths differ or remote nickname length not specified";
445 if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion)))))
447 if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end())
449 reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion);
453 reason = "Protocol version not specified";
456 if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (Instance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(Instance->Config->AllowHalfop))))
457 reason = "We don't both have halfop support enabled/disabled identically";
458 if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
459 reason = "Maximum ident lengths differ or remote ident length not specified";
460 if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
461 reason = "Maximum channel lengths differ or remote channel length not specified";
462 if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
463 reason = "Maximum modes per line differ or remote modes per line not specified";
464 if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
465 reason = "Maximum quit lengths differ or remote quit length not specified";
466 if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
467 reason = "Maximum topic lengths differ or remote topic length not specified";
468 if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
469 reason = "Maximum kick lengths differ or remote kick length not specified";
470 if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
471 reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
472 if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
473 reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
475 /* Challenge response, store their challenge for our password */
476 std::map<std::string,std::string>::iterator n = this->CapKeys.find("CHALLENGE");
477 if (Utils->ChallengeResponse && (n != this->CapKeys.end()) && (Instance->FindModule("m_sha256.so")))
479 /* Challenge-response is on now */
480 this->SetTheirChallenge(n->second);
481 if (!this->GetTheirChallenge().empty() && (this->LinkState == CONNECTING))
483 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+this->MakePass(OutboundPass, this->GetTheirChallenge())+" 0 :"+this->Instance->Config->ServerDesc);
488 /* They didnt specify a challenge or we don't have m_sha256.so, we use plaintext */
489 if (this->LinkState == CONNECTING)
490 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+OutboundPass+" 0 :"+this->Instance->Config->ServerDesc);
495 this->SendError("CAPAB negotiation failed: "+reason);
499 else if ((params[0] == "MODULES") && (params.size() == 2))
501 if (!this->ModuleList.length())
503 this->ModuleList.append(params[1]);
507 this->ModuleList.append(",");
508 this->ModuleList.append(params[1]);
512 else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
514 irc::tokenstream capabs(params[1]);
517 while ((more = capabs.GetToken(item)))
519 /* Process each key/value pair */
520 std::string::size_type equals = item.rfind('=');
521 if (equals != std::string::npos)
523 std::string var = item.substr(0, equals);
524 std::string value = item.substr(equals+1, item.length());
525 CapKeys[var] = value;
532 /** This function forces this server to quit, removing this server
533 * and any users on it (and servers and users below that, etc etc).
534 * It's very slow and pretty clunky, but luckily unless your network
535 * is having a REAL bad hair day, this function shouldnt be called
536 * too many times a month ;-)
538 void TreeSocket::SquitServer(std::string &from, TreeServer* Current)
540 /* recursively squit the servers attached to 'Current'.
541 * We're going backwards so we don't remove users
542 * while we still need them ;)
544 for (unsigned int q = 0; q < Current->ChildCount(); q++)
546 TreeServer* recursive_server = Current->GetChild(q);
547 this->SquitServer(from,recursive_server);
549 /* Now we've whacked the kids, whack self */
551 num_lost_users += Current->QuitUsers(from);
554 /** This is a wrapper function for SquitServer above, which
555 * does some validation first and passes on the SQUIT to all
556 * other remaining servers.
558 void TreeSocket::Squit(TreeServer* Current, const std::string &reason)
560 if ((Current) && (Current != Utils->TreeRoot))
562 Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server");
563 rmode.Send(Instance);
565 std::deque<std::string> params;
566 params.push_back(Current->GetName());
567 params.push_back(":"+reason);
568 Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
569 if (Current->GetParent() == Utils->TreeRoot)
571 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
575 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
577 num_lost_servers = 0;
579 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
580 SquitServer(from, Current);
582 Current->GetParent()->DelChild(Current);
584 this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
588 Instance->Log(DEFAULT,"Squit from unknown server");
592 /** FMODE command - server mode with timestamp checks */
593 bool TreeSocket::ForceMode(const std::string &source, std::deque<std::string> ¶ms)
595 /* Chances are this is a 1.0 FMODE without TS */
596 if (params.size() < 3)
598 /* No modes were in the command, probably a channel with no modes set on it */
603 std::string sourceserv;
604 /* Are we dealing with an FMODE from a user, or from a server? */
605 userrec* who = this->Instance->FindNick(source);
608 /* FMODE from a user, set sourceserv to the users server name */
609 sourceserv = who->server;
613 /* FMODE from a server, create a fake user to receive mode feedback */
614 who = new userrec(this->Instance);
615 who->SetFd(FD_MAGIC_NUMBER);
616 smode = true; /* Setting this flag tells us we should free the userrec later */
617 sourceserv = source; /* Set sourceserv to the actual source string */
619 const char* modelist[64];
622 memset(&modelist,0,sizeof(modelist));
623 for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
627 /* The timestamp is in this position.
628 * We don't want to pass that up to the
629 * server->client protocol!
631 TS = atoi(params[q].c_str());
635 /* Everything else is fine to append to the modelist */
636 modelist[n++] = params[q].c_str();
640 /* Extract the TS value of the object, either userrec or chanrec */
641 userrec* dst = this->Instance->FindNick(params[0]);
642 chanrec* chan = NULL;
650 chan = this->Instance->FindChan(params[0]);
656 /* Oops, channel doesnt exist! */
660 /* TS is equal or less: Merge the mode changes into ours and pass on.
666 this->Instance->SendMode(modelist, n, who);
670 this->Instance->CallCommandHandler("MODE", modelist, n, who);
672 /* HOT POTATO! PASS IT ON! */
673 Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv);
675 /* If the TS is greater than ours, we drop the mode and dont pass it anywhere.
684 /** FTOPIC command */
685 bool TreeSocket::ForceTopic(const std::string &source, std::deque<std::string> ¶ms)
687 if (params.size() != 4)
689 time_t ts = atoi(params[1].c_str());
690 std::string nsource = source;
691 chanrec* c = this->Instance->FindChan(params[0]);
694 if ((ts >= c->topicset) || (!*c->topic))
696 std::string oldtopic = c->topic;
697 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
698 strlcpy(c->setby,params[2].c_str(),127);
700 /* if the topic text is the same as the current topic,
701 * dont bother to send the TOPIC command out, just silently
702 * update the set time and set nick.
704 if (oldtopic != params[3])
706 userrec* user = this->Instance->FindNick(source);
709 c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
713 c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
714 nsource = user->server;
716 /* all done, send it on its way */
717 params[3] = ":" + params[3];
718 Utils->DoOneToAllButSender(source,"FTOPIC",params,nsource);
726 /** FJOIN, similar to TS6 SJOIN, but not quite. */
727 bool TreeSocket::ForceJoin(const std::string &source, std::deque<std::string> ¶ms)
729 /* 1.1 FJOIN works as follows:
731 * Each FJOIN is sent along with a timestamp, and the side with the lowest
732 * timestamp 'wins'. From this point on we will refer to this side as the
733 * winner. The side with the higher timestamp loses, from this point on we
734 * will call this side the loser or losing side. This should be familiar to
735 * anyone who's dealt with dreamforge or TS6 before.
737 * When two sides of a split heal and this occurs, the following things
740 * If the timestamps are exactly equal, both sides merge their privilages
741 * and users, as in InspIRCd 1.0 and ircd2.8. The channels have not been
742 * re-created during a split, this is safe to do.
745 * If the timestamps are NOT equal, the losing side removes all privilage
746 * modes from all of its users that currently exist in the channel, before
747 * introducing new users into the channel which are listed in the FJOIN
748 * command's parameters. This means, all modes +ohv, and privilages added
749 * by modules, such as +qa. The losing side then LOWERS its timestamp value
750 * of the channel to match that of the winning side, and the modes of the
751 * users of the winning side are merged in with the losing side. The loser
752 * then sends out a set of FMODE commands which 'confirm' that it just
753 * removed all privilage modes from its existing users, which allows for
754 * services packages to still work correctly without needing to know the
755 * timestamping rules which InspIRCd follows. In TS6 servers this is always
756 * a problem, and services packages must contain code which explicitly
757 * behaves as TS6 does, removing ops from the losing side of a split where
758 * neccessary within its internal records, as this state information is
759 * not explicitly echoed out in that protocol.
761 * The winning side on the other hand will ignore all user modes from the
762 * losing side, so only its own modes get applied. Life is simple for those
763 * who succeed at internets. :-)
765 * NOTE: Unlike TS6 and dreamforge and other protocols which have SJOIN,
766 * FJOIN does not contain the simple-modes such as +iklmnsp. Why not,
767 * you ask? Well, quite simply because we don't need to. They'll be sent
768 * after the FJOIN by FMODE, and FMODE is timestamped, so in the event
769 * the losing side sends any modes for the channel which shouldnt win,
770 * they wont as their timestamp will be too high :-)
773 if (params.size() < 3)
776 char first[MAXBUF]; /* The first parameter of the mode command */
777 char modestring[MAXBUF]; /* The mode sequence (2nd parameter) of the mode command */
778 char* mode_users[127]; /* The values used by the mode command */
779 memset(&mode_users,0,sizeof(mode_users)); /* Initialize mode parameters */
780 mode_users[0] = first; /* Set this up to be our on-stack value */
781 mode_users[1] = modestring; /* Same here as above */
782 strcpy(modestring,"+"); /* Initialize the mode sequence to just '+' */
783 unsigned int modectr = 2; /* Pointer to the third mode parameter (e.g. the one after the +-sequence) */
785 userrec* who = NULL; /* User we are currently checking */
786 std::string channel = params[0]; /* Channel name, as a string */
787 time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */
788 std::string nicklist = params[2];
789 bool created = false;
791 /* Try and find the channel */
792 chanrec* chan = this->Instance->FindChan(channel);
794 /* Initialize channel name in the mode parameters */
795 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
797 /* default TS is a high value, which if we dont have this
798 * channel will let the other side apply their modes.
800 time_t ourTS = Instance->Time(true)+600;
801 /* Does this channel exist? if it does, get its REAL timestamp */
805 created = true; /* don't perform deops, and set TS to correct time after processing. */
807 /* do this first, so our mode reversals are correctly received by other servers
808 * if there is a TS collision.
810 params[2] = ":" + params[2];
811 Utils->DoOneToAllButSender(source,"FJOIN",params,source);
813 /* In 1.1, if they have the newer channel, we immediately clear
814 * all status modes from our users. We then accept their modes.
815 * If WE have the newer channel its the other side's job to do this.
816 * Note that this causes the losing server to send out confirming
821 std::deque<std::string> param_list;
822 /* Lower the TS here */
823 if (Utils->AnnounceTSChange && chan)
824 chan->WriteChannelWithServ(Instance->Config->ServerName,
825 "NOTICE %s :TS for %s changed from %lu to %lu", chan->name, chan->name, ourTS, TS);
827 /* Zap all the privilage modes on our side, if the channel exists here */
830 param_list.push_back(channel);
833 this->RemoveStatus(Instance->Config->ServerName, param_list);
836 /* Put the final parameter of the FJOIN into a tokenstream ready to split it */
837 irc::tokenstream users(nicklist);
840 /* Now, process every 'prefixes,nick' pair */
841 while (users.GetToken(item))
844 const char* usr = item.c_str();
845 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
846 * (is this even possible?) */
849 const char* permissions = usr;
851 char* nm = new char[MAXBUF];
853 /* Iterate through all the prefix values, convert them from prefixes
854 * to mode letters, and append them to the mode sequence
856 while ((*permissions) && (*permissions != ',') && (ntimes < MAXBUF))
858 ModeHandler* mh = Instance->Modes->FindPrefix(*permissions);
861 /* This is a valid prefix */
863 *tnm++ = mh->GetModeChar();
867 /* Not a valid prefix...
868 * danger bill bobbertson! (that's will robinsons older brother ;-) ...)
870 this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",*permissions);
871 this->SendError(std::string("Invalid prefix '")+(*permissions)+"' in FJOIN");
877 /* Null terminate modes */
879 /* Advance past the comma, to the nick */
881 /* Check the user actually exists */
882 who = this->Instance->FindNick(usr);
885 /* Check that the user's 'direction' is correct
886 * based on the server sending the FJOIN. We must
887 * check each nickname in turn, because the origin of
888 * the FJOIN may be different to the origin of the nicks
889 * in the command itself.
891 TreeServer* route_back_again = Utils->BestRouteTo(who->server);
892 if ((!route_back_again) || (route_back_again->GetSocket() != this))
894 /* Oh dear oh dear. */
899 /* NOTE: Moved this below the fake direction check, so that modes
900 * arent put into the mode list for users that were collided, and
901 * may reconnect from the other side or our side before the split
905 /* Did they get any modes? How many times? */
906 strlcat(modestring, nm, MAXBUF);
907 for (int k = 0; k < ntimes; k++)
908 mode_users[modectr++] = strdup(usr);
909 /* Free temporary buffer used for mode sequence */
912 /* Finally, we can actually place the user into the channel.
913 * We're sure its right. Final answer, phone a friend.
916 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, "", TS);
918 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, "");
919 /* Have we already queued up MAXMODES modes with parameters
920 * (+qaohv) ready to be sent to the server?
922 if (modectr >= (MAXMODES-1))
924 /* Only actually give the users any status if we lost
925 * the FJOIN or drew (equal timestamps).
926 * It isn't actually possible for ourTS to be > TS here,
927 * only possible to actually have ourTS == TS, or
928 * ourTS < TS, because if we lost, we already lowered
929 * our TS above before we entered this loop. We only
930 * check >= as a safety measure, in case someone stuffed
931 * up. If someone DID stuff up, it was most likely me.
932 * Note: I do not like baseball bats in the face...
936 this->Instance->SendMode((const char**)mode_users,modectr,who);
938 /* Something stuffed up, and for some reason, the timestamp is
939 * NOT lowered right now and should be. Lower it. Usually this
940 * code won't be executed, doubtless someone will remove it some
945 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS);
951 /* Reset all this back to defaults, and
952 * free any ram we have left allocated.
954 strcpy(mode_users[1],"+");
955 for (unsigned int f = 2; f < modectr; f++)
962 /* Remember to free this */
964 /* If we got here, there's a nick in FJOIN which doesnt exist on this server.
965 * We don't try to process the nickname here (that WOULD cause a segfault because
966 * we'd be playing with null pointers) however, we DO pass the nickname on, just
967 * in case somehow we're desynched, so that other users which might be able to see
968 * the nickname get their fair chance to process it.
970 Instance->Log(SPARSE,"Warning! Invalid user %s in FJOIN to channel %s IGNORED", usr, channel.c_str());
976 /* there werent enough modes built up to flush it during FJOIN,
977 * or, there are a number left over. flush them out.
979 if ((modectr > 2) && (who) && (chan))
983 /* Our channel is newer than theirs. Evil deeds must be afoot. */
984 this->Instance->SendMode((const char**)mode_users,modectr,who);
985 /* Yet again, we can't actually get a true value here, if everything else
986 * is working as it should.
990 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS);
996 /* Free anything we have left to free */
997 for (unsigned int f = 2; f < modectr; f++)
1000 /* All done. That wasnt so bad was it, you can wipe
1001 * the sweat from your forehead now. :-)
1007 bool TreeSocket::IntroduceClient(const std::string &source, std::deque<std::string> ¶ms)
1009 /** Do we have enough parameters:
1010 * NICK age nick host dhost ident +modes ip :gecos
1012 if (params.size() != 8)
1014 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1018 time_t age = atoi(params[0].c_str());
1019 const char* tempnick = params[1].c_str();
1021 /** Check parameters for validity before introducing the client, discovered by dmb.
1022 * XXX: Can we make this neater?
1026 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction (Invalid TS?)");
1029 else if (params[1].length() > NICKMAX)
1031 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+" > NICKMAX?)");
1034 else if (params[2].length() > 64)
1036 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[2]+" > 64?)");
1039 else if (params[3].length() > 64)
1041 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[3]+" > 64?)");
1044 else if (params[4].length() > IDENTMAX)
1046 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[4]+" > IDENTMAX?)");
1049 else if (params[7].length() > MAXGECOS)
1051 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[7]+" > MAXGECOS?)");
1055 /** Our client looks ok, lets introduce it now
1057 Instance->Log(DEBUG,"New remote client %s",tempnick);
1058 user_hash::iterator iter = this->Instance->clientlist->find(tempnick);
1060 if (iter != this->Instance->clientlist->end())
1062 /* nick collision */
1063 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
1064 userrec::QuitUser(this->Instance, iter->second, "Nickname collision");
1068 userrec* _new = new userrec(this->Instance);
1069 (*(this->Instance->clientlist))[tempnick] = _new;
1070 _new->SetFd(FD_MAGIC_NUMBER);
1071 strlcpy(_new->nick, tempnick,NICKMAX-1);
1072 strlcpy(_new->host, params[2].c_str(),64);
1073 strlcpy(_new->dhost, params[3].c_str(),64);
1074 _new->server = this->Instance->FindServerNamePtr(source.c_str());
1075 strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
1076 strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
1077 _new->registered = REG_ALL;
1080 /* we need to remove the + from the modestring, so we can do our stuff */
1081 std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
1082 if (pos_after_plus != std::string::npos)
1083 params[5] = params[5].substr(pos_after_plus);
1085 for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
1087 _new->modes[(*v)-65] = 1;
1088 /* For each mode thats set, increase counter */
1089 ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER);
1094 /* now we've done with modes processing, put the + back for remote servers */
1095 params[5] = "+" + params[5];
1097 #ifdef SUPPORT_IP6LINKS
1098 if (params[6].find_first_of(":") != std::string::npos)
1099 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
1102 _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
1104 Instance->AddGlobalClone(_new);
1106 if (!this->Instance->SilentULine(_new->server))
1107 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
1109 params[7] = ":" + params[7];
1110 Utils->DoOneToAllButSender(source,"NICK", params, source);
1112 // Increment the Source Servers User Count..
1113 TreeServer* SourceServer = Utils->FindServer(source);
1116 SourceServer->AddUserCount();
1119 FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new));
1124 /** Send one or more FJOINs for a channel of users.
1125 * If the length of a single line is more than 480-NICKMAX
1126 * in length, it is split over multiple lines.
1128 void TreeSocket::SendFJoins(TreeServer* Current, chanrec* c)
1132 std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
1134 size_t dlen, curlen;
1135 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1137 char* ptr = list + dlen;
1139 CUList *ulist = c->GetUsers();
1140 std::string modes = "";
1141 std::string params = "";
1143 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1145 // The first parameter gets a : before it
1146 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
1153 if (curlen > (480-NICKMAX))
1155 buffer.append(list).append("\r\n");
1156 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1164 buffer.append(list).append("\r\n");
1166 /* Sorry for the hax. Because newly created channels assume +nt,
1167 * if this channel doesnt have +nt, explicitly send -n and -t for the missing modes.
1169 bool inverted = false;
1170 if (!c->IsModeSet('n'))
1175 if (!c->IsModeSet('t'))
1185 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");
1188 for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
1190 int size = strlen(b->data) + 2;
1191 int currsize = linesize + size;
1192 if (currsize <= 350)
1195 params.append(" ").append(b->data);
1198 if ((params.length() >= MAXMODES) || (currsize > 350))
1200 /* Wrap at MAXMODES */
1201 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");
1208 /* Only send these if there are any */
1210 buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params);
1212 this->WriteLine(buffer);
1215 /** Send G, Q, Z and E lines */
1216 void TreeSocket::SendXLines(TreeServer* Current)
1220 std::string n = this->Instance->Config->ServerName;
1221 const char* sn = n.c_str();
1222 /* Yes, these arent too nice looking, but they get the job done */
1223 for (std::vector<ZLine*>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++)
1225 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);
1226 buffer.append(data);
1228 for (std::vector<QLine*>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++)
1230 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);
1231 buffer.append(data);
1233 for (std::vector<GLine*>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++)
1235 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);
1236 buffer.append(data);
1238 for (std::vector<ELine*>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++)
1240 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);
1241 buffer.append(data);
1243 for (std::vector<ZLine*>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++)
1245 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);
1246 buffer.append(data);
1248 for (std::vector<QLine*>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++)
1250 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);
1251 buffer.append(data);
1253 for (std::vector<GLine*>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++)
1255 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);
1256 buffer.append(data);
1258 for (std::vector<ELine*>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++)
1260 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);
1261 buffer.append(data);
1264 if (!buffer.empty())
1265 this->WriteLine(buffer);
1268 /** Send channel modes and topics */
1269 void TreeSocket::SendChannelModes(TreeServer* Current)
1272 std::deque<std::string> list;
1273 std::string n = this->Instance->Config->ServerName;
1274 const char* sn = n.c_str();
1275 for (chan_hash::iterator c = this->Instance->chanlist->begin(); c != this->Instance->chanlist->end(); c++)
1277 SendFJoins(Current, c->second);
1278 if (*c->second->topic)
1280 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
1281 this->WriteLine(data);
1283 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this));
1285 c->second->GetExtList(list);
1286 for (unsigned int j = 0; j < list.size(); j++)
1288 FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j]));
1293 /** send all users and their oper state/modes */
1294 void TreeSocket::SendUsers(TreeServer* Current)
1297 std::deque<std::string> list;
1298 std::string dataline;
1299 for (user_hash::iterator u = this->Instance->clientlist->begin(); u != this->Instance->clientlist->end(); u++)
1301 if (u->second->registered == REG_ALL)
1303 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);
1304 this->WriteLine(data);
1305 if (*u->second->oper)
1307 snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->nick, u->second->oper);
1308 this->WriteLine(data);
1310 if (*u->second->awaymsg)
1312 snprintf(data,MAXBUF,":%s AWAY :%s", u->second->nick, u->second->awaymsg);
1313 this->WriteLine(data);
1315 FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this));
1317 u->second->GetExtList(list);
1319 for (unsigned int j = 0; j < list.size(); j++)
1321 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j]));
1327 /** This function is called when we want to send a netburst to a local
1328 * server. There is a set order we must do this, because for example
1329 * users require their servers to exist, and channels require their
1330 * users to exist. You get the idea.
1332 void TreeSocket::DoBurst(TreeServer* s)
1334 std::string name = s->GetName();
1335 std::string burst = "BURST "+ConvToStr(Instance->Time(true));
1336 std::string endburst = "ENDBURST";
1337 this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2%s\2 (Authentication: %s).", name.c_str(), this->GetTheirChallenge().empty() ? "plaintext password" : "SHA256-HMAC challenge-response");
1338 this->WriteLine(burst);
1339 /* send our version string */
1340 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
1341 /* Send server tree */
1342 this->SendServers(Utils->TreeRoot,s,1);
1343 /* Send users and their oper status */
1345 /* Send everything else (channel modes, xlines etc) */
1346 this->SendChannelModes(s);
1347 this->SendXLines(s);
1348 FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this));
1349 this->WriteLine(endburst);
1350 this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
1353 /** This function is called when we receive data from a remote
1354 * server. We buffer the data in a std::string (it doesnt stay
1355 * there for long), reading using InspSocket::Read() which can
1356 * read up to 16 kilobytes in one operation.
1358 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1359 * THE SOCKET OBJECT FOR US.
1361 bool TreeSocket::OnDataReady()
1363 char* data = this->Read();
1364 /* Check that the data read is a valid pointer and it has some content */
1367 this->in_buffer.append(data);
1368 /* While there is at least one new line in the buffer,
1369 * do something useful (we hope!) with it.
1371 while (in_buffer.find("\n") != std::string::npos)
1373 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
1374 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
1375 /* Use rfind here not find, as theres more
1376 * chance of the \r being near the end of the
1377 * string, not the start.
1379 if (ret.find("\r") != std::string::npos)
1380 ret = in_buffer.substr(0,in_buffer.find("\r")-1);
1381 /* Process this one, abort if it
1382 * didnt return true.
1384 if (!this->ProcessLine(ret))
1391 /* EAGAIN returns an empty but non-NULL string, so this
1392 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
1394 return (data && !*data);