X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Ftreeserver.cpp;h=4ce7c49d5d2cc803036671e7caf5dfdfb8e87554;hb=551d687ec6d7ce44be35fae0dd7345fe73c4f63a;hp=670f7e420e06f63c4fbdd1a0f4698e94deac300b;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/treeserver.cpp b/src/modules/m_spanningtree/treeserver.cpp index 670f7e420..4ce7c49d5 100644 --- a/src/modules/m_spanningtree/treeserver.cpp +++ b/src/modules/m_spanningtree/treeserver.cpp @@ -1 +1,348 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include "configreader.h" #include "users.h" #include "channels.h" #include "modules.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_spanningtree/utils.h" #include "m_spanningtree/treeserver.h" /* $ModDep: m_spanningtree/utils.h m_spanningtree/treeserver.h */ TreeServer::TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance) : ServerInstance(Instance), Utils(Util) { Parent = NULL; ServerName.clear(); ServerDesc.clear(); VersionString.clear(); UserCount = OperCount = 0; rtt = LastPing = 0; Hidden = false; VersionString = ServerInstance->GetVersionString(); } /** We use this constructor only to create the 'root' item, Utils->TreeRoot, which * represents our own server. Therefore, it has no route, no parent, and * no socket associated with it. Its version string is our own local version. */ TreeServer::TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc), Utils(Util) { Parent = NULL; VersionString.clear(); UserCount = ServerInstance->UserCount(); OperCount = ServerInstance->OperCount(); VersionString = ServerInstance->GetVersionString(); Route = NULL; Socket = NULL; /* Fix by brain */ rtt = LastPing = 0; Hidden = false; AddHashEntry(); } /** When we create a new server, we call this constructor to initialize it. * This constructor initializes the server's Route and Parent, and sets up * its ping counters so that it will be pinged one minute from now. */ TreeServer::TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock, bool Hide) : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock), Utils(Util), Hidden(Hide) { VersionString.clear(); UserCount = OperCount = 0; this->SetNextPingTime(time(NULL) + 60); this->SetPingFlag(); rtt = LastPing = 0; /* find the 'route' for this server (e.g. the one directly connected * to the local server, which we can use to reach it) * * In the following example, consider we have just added a TreeServer * class for server G on our network, of which we are server A. * To route traffic to G (marked with a *) we must send the data to * B (marked with a +) so this algorithm initializes the 'Route' * value to point at whichever server traffic must be routed through * to get here. If we were to try this algorithm with server B, * the Route pointer would point at its own object ('this'). * * A * / \ * + B C * / \ \ * D E F * / \ * * G H * * We only run this algorithm when a server is created, as * the routes remain constant while ever the server exists, and * do not need to be re-calculated. */ Route = Above; if (Route == Utils->TreeRoot) { Route = this; } else { while (this->Route->GetParent() != Utils->TreeRoot) { this->Route = Route->GetParent(); } } /* Because recursive code is slow and takes a lot of resources, * we store two representations of the server tree. The first * is a recursive structure where each server references its * children and its parent, which is used for netbursts and * netsplits to dump the whole dataset to the other server, * and the second is used for very fast lookups when routing * messages and is instead a hash_map, where each item can * be referenced by its server name. The AddHashEntry() * call below automatically inserts each TreeServer class * into the hash_map as it is created. There is a similar * maintainance call in the destructor to tidy up deleted * servers. */ this->AddHashEntry(); } int TreeServer::QuitUsers(const std::string &reason) { const char* reason_s = reason.c_str(); std::vector time_to_die; for (user_hash::iterator n = ServerInstance->clientlist->begin(); n != ServerInstance->clientlist->end(); n++) { if (!strcmp(n->second->server, this->ServerName.c_str())) { time_to_die.push_back(n->second); } } for (std::vector::iterator n = time_to_die.begin(); n != time_to_die.end(); n++) { userrec* a = (userrec*)*n; if (!IS_LOCAL(a)) { if (ServerInstance->Config->HideSplits) userrec::QuitUser(ServerInstance, a, "*.net *.split", reason_s); else userrec::QuitUser(ServerInstance, a, reason_s); if (this->Utils->quiet_bursts) ServerInstance->GlobalCulls.MakeSilent(a); } } return time_to_die.size(); } /** This method is used to add the structure to the * hash_map for linear searches. It is only called * by the constructors. */ void TreeServer::AddHashEntry() { server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); if (iter == Utils->serverlist.end()) Utils->serverlist[this->ServerName.c_str()] = this; } /** This method removes the reference to this object * from the hash_map which is used for linear searches. * It is only called by the default destructor. */ void TreeServer::DelHashEntry() { server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); if (iter != Utils->serverlist.end()) Utils->serverlist.erase(iter); } /** These accessors etc should be pretty self- * explanitory. */ TreeServer* TreeServer::GetRoute() { return Route; } std::string TreeServer::GetName() { return ServerName.c_str(); } std::string TreeServer::GetDesc() { return ServerDesc; } std::string TreeServer::GetVersion() { return VersionString; } void TreeServer::SetNextPingTime(time_t t) { this->NextPing = t; LastPingWasGood = false; } time_t TreeServer::NextPingTime() { return NextPing; } bool TreeServer::AnsweredLastPing() { return LastPingWasGood; } void TreeServer::SetPingFlag() { LastPingWasGood = true; } int TreeServer::GetUserCount() { return UserCount; } void TreeServer::AddUserCount() { UserCount++; } void TreeServer::DelUserCount() { UserCount--; } int TreeServer::GetOperCount() { return OperCount; } TreeSocket* TreeServer::GetSocket() { return Socket; } TreeServer* TreeServer::GetParent() { return Parent; } void TreeServer::SetVersion(const std::string &Version) { VersionString = Version; } unsigned int TreeServer::ChildCount() { return Children.size(); } TreeServer* TreeServer::GetChild(unsigned int n) { if (n < Children.size()) { /* Make sure they cant request * an out-of-range object. After * all we know what these programmer * types are like *grin*. */ return Children[n]; } else { return NULL; } } void TreeServer::AddChild(TreeServer* Child) { Children.push_back(Child); } bool TreeServer::DelChild(TreeServer* Child) { for (std::vector::iterator a = Children.begin(); a < Children.end(); a++) { if (*a == Child) { Children.erase(a); return true; } } return false; } /** Removes child nodes of this node, and of that node, etc etc. * This is used during netsplits to automatically tidy up the * server tree. It is slow, we don't use it for much else. */ bool TreeServer::Tidy() { bool stillchildren = true; while (stillchildren) { stillchildren = false; for (std::vector::iterator a = Children.begin(); a < Children.end(); a++) { TreeServer* s = (TreeServer*)*a; s->Tidy(); Children.erase(a); DELETE(s); stillchildren = true; break; } } return true; } TreeServer::~TreeServer() { /* We'd better tidy up after ourselves, eh? */ this->DelHashEntry(); } \ No newline at end of file +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2009 Daniel De Graaf + * Copyright (C) 2007-2008 Craig Edwards + * Copyright (C) 2008 Robin Burchell + * Copyright (C) 2007 Dennis Friis + * + * 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 "xline.h" +#include "main.h" +#include "modules/spanningtree.h" + +#include "utils.h" +#include "treeserver.h" + +/* $ModDep: m_spanningtree/utils.h m_spanningtree/treeserver.h */ + +/** We use this constructor only to create the 'root' item, Utils->TreeRoot, which + * represents our own server. Therefore, it has no route, no parent, and + * no socket associated with it. Its version string is our own local version. + */ +TreeServer::TreeServer(SpanningTreeUtilities* Util, std::string Name, std::string Desc, const std::string &id) + : ServerName(Name.c_str()), ServerDesc(Desc), Utils(Util), ServerUser(ServerInstance->FakeClient) +{ + age = ServerInstance->Time(); + bursting = false; + Parent = NULL; + VersionString.clear(); + UserCount = OperCount = 0; + VersionString = ServerInstance->GetVersionString(); + Route = NULL; + Socket = NULL; /* Fix by brain */ + StartBurst = rtt = 0; + Warned = Hidden = false; + AddHashEntry(); + SetID(id); +} + +/** When we create a new server, we call this constructor to initialize it. + * This constructor initializes the server's Route and Parent, and sets up + * its ping counters so that it will be pinged one minute from now. + */ +TreeServer::TreeServer(SpanningTreeUtilities* Util, std::string Name, std::string Desc, const std::string &id, TreeServer* Above, TreeSocket* Sock, bool Hide) + : Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock), Utils(Util), ServerUser(new FakeUser(id, Name)), Hidden(Hide) +{ + age = ServerInstance->Time(); + bursting = true; + VersionString.clear(); + UserCount = OperCount = 0; + SetNextPingTime(ServerInstance->Time() + Utils->PingFreq); + SetPingFlag(); + Warned = false; + rtt = 0; + + long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000); + this->StartBurst = ts; + ServerInstance->Logs->Log("m_spanningtree",LOG_DEBUG, "Started bursting at time %lu", ts); + + /* find the 'route' for this server (e.g. the one directly connected + * to the local server, which we can use to reach it) + * + * In the following example, consider we have just added a TreeServer + * class for server G on our network, of which we are server A. + * To route traffic to G (marked with a *) we must send the data to + * B (marked with a +) so this algorithm initializes the 'Route' + * value to point at whichever server traffic must be routed through + * to get here. If we were to try this algorithm with server B, + * the Route pointer would point at its own object ('this'). + * + * A + * / \ + * + B C + * / \ \ + * D E F + * / \ + * * G H + * + * We only run this algorithm when a server is created, as + * the routes remain constant while ever the server exists, and + * do not need to be re-calculated. + */ + + Route = Above; + if (Route == Utils->TreeRoot) + { + Route = this; + } + else + { + while (this->Route->GetParent() != Utils->TreeRoot) + { + this->Route = Route->GetParent(); + } + } + + /* Because recursive code is slow and takes a lot of resources, + * we store two representations of the server tree. The first + * is a recursive structure where each server references its + * children and its parent, which is used for netbursts and + * netsplits to dump the whole dataset to the other server, + * and the second is used for very fast lookups when routing + * messages and is instead a hash_map, where each item can + * be referenced by its server name. The AddHashEntry() + * call below automatically inserts each TreeServer class + * into the hash_map as it is created. There is a similar + * maintainance call in the destructor to tidy up deleted + * servers. + */ + + this->AddHashEntry(); + + SetID(id); +} + +const std::string& TreeServer::GetID() +{ + return sid; +} + +void TreeServer::FinishBurstInternal() +{ + this->bursting = false; + SetNextPingTime(ServerInstance->Time() + Utils->PingFreq); + SetPingFlag(); + for(unsigned int q=0; q < ChildCount(); q++) + { + TreeServer* child = GetChild(q); + child->FinishBurstInternal(); + } +} + +void TreeServer::FinishBurst() +{ + FinishBurstInternal(); + ServerInstance->XLines->ApplyLines(); + long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000); + unsigned long bursttime = ts - this->StartBurst; + ServerInstance->SNO->WriteToSnoMask(Parent == Utils->TreeRoot ? 'l' : 'L', "Received end of netburst from \2%s\2 (burst time: %lu %s)", + ServerName.c_str(), (bursttime > 10000 ? bursttime / 1000 : bursttime), (bursttime > 10000 ? "secs" : "msecs")); + AddServerEvent(Utils->Creator, ServerName.c_str()); +} + +void TreeServer::SetID(const std::string &id) +{ + ServerInstance->Logs->Log("m_spanningtree",LOG_DEBUG, "Setting SID to " + id); + sid = id; + Utils->sidlist[sid] = this; +} + +int TreeServer::QuitUsers(const std::string &reason) +{ + const char* reason_s = reason.c_str(); + std::vector time_to_die; + for (user_hash::iterator n = ServerInstance->Users->clientlist->begin(); n != ServerInstance->Users->clientlist->end(); n++) + { + if (n->second->server == ServerName) + { + time_to_die.push_back(n->second); + } + } + for (std::vector::iterator n = time_to_die.begin(); n != time_to_die.end(); n++) + { + User* a = (User*)*n; + if (!IS_LOCAL(a)) + { + if (this->Utils->quiet_bursts) + a->quietquit = true; + + if (ServerInstance->Config->HideSplits) + ServerInstance->Users->QuitUser(a, "*.net *.split", reason_s); + else + ServerInstance->Users->QuitUser(a, reason_s); + } + } + return time_to_die.size(); +} + +/** This method is used to add the structure to the + * hash_map for linear searches. It is only called + * by the constructors. + */ +void TreeServer::AddHashEntry() +{ + server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); + if (iter == Utils->serverlist.end()) + Utils->serverlist[this->ServerName.c_str()] = this; +} + +/** This method removes the reference to this object + * from the hash_map which is used for linear searches. + * It is only called by the default destructor. + */ +void TreeServer::DelHashEntry() +{ + server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); + if (iter != Utils->serverlist.end()) + Utils->serverlist.erase(iter); +} + +/** These accessors etc should be pretty self- + * explanitory. + */ +TreeServer* TreeServer::GetRoute() +{ + return Route; +} + +std::string TreeServer::GetName() +{ + return ServerName.c_str(); +} + +const std::string& TreeServer::GetDesc() +{ + return ServerDesc; +} + +const std::string& TreeServer::GetVersion() +{ + return VersionString; +} + +void TreeServer::SetNextPingTime(time_t t) +{ + this->NextPing = t; + LastPingWasGood = false; +} + +time_t TreeServer::NextPingTime() +{ + return NextPing; +} + +bool TreeServer::AnsweredLastPing() +{ + return LastPingWasGood; +} + +void TreeServer::SetPingFlag() +{ + LastPingWasGood = true; +} + +TreeSocket* TreeServer::GetSocket() +{ + return Socket; +} + +TreeServer* TreeServer::GetParent() +{ + return Parent; +} + +void TreeServer::SetVersion(const std::string &Version) +{ + VersionString = Version; +} + +unsigned int TreeServer::ChildCount() +{ + return Children.size(); +} + +TreeServer* TreeServer::GetChild(unsigned int n) +{ + if (n < Children.size()) + { + /* Make sure they cant request + * an out-of-range object. After + * all we know what these programmer + * types are like *grin*. + */ + return Children[n]; + } + else + { + return NULL; + } +} + +void TreeServer::AddChild(TreeServer* Child) +{ + Children.push_back(Child); +} + +bool TreeServer::DelChild(TreeServer* Child) +{ + std::vector::iterator it = std::find(Children.begin(), Children.end(), Child); + if (it != Children.end()) + { + Children.erase(it); + return true; + } + return false; +} + +/** Removes child nodes of this node, and of that node, etc etc. + * This is used during netsplits to automatically tidy up the + * server tree. It is slow, we don't use it for much else. + */ +bool TreeServer::Tidy() +{ + while (1) + { + std::vector::iterator a = Children.begin(); + if (a == Children.end()) + return true; + TreeServer* s = *a; + s->Tidy(); + s->cull(); + Children.erase(a); + delete s; + } +} + +CullResult TreeServer::cull() +{ + if (ServerUser != ServerInstance->FakeClient) + ServerUser->cull(); + return classbase::cull(); +} + +TreeServer::~TreeServer() +{ + /* We'd better tidy up after ourselves, eh? */ + this->DelHashEntry(); + if (ServerUser != ServerInstance->FakeClient) + delete ServerUser; + + server_hash::iterator iter = Utils->sidlist.find(GetID()); + if (iter != Utils->sidlist.end()) + Utils->sidlist.erase(iter); +}