src/modules/m_spanningtree/postcommand.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
   6  *
   7  * This file is part of InspIRCd.  InspIRCd is free software: you can
   8  * redistribute it and/or modify it under the terms of the GNU General Public
   9  * License as published by the Free Software Foundation, version 2.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  14  * details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 /* $ModDesc: Provides a spanning tree server link protocol */
  22
  23 #include "inspircd.h"
  24 #include "socket.h"
  25 #include "xline.h"
  26
  27 #include "main.h"
  28 #include "utils.h"
  29 #include "treeserver.h"
  30 #include "treesocket.h"
  31
  32 /* $ModDep: m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/treesocket.h */
  33
  34 void ModuleSpanningTree::OnPostCommand(const std::string &command, const std::vector<std::string>& parameters, LocalUser *user, CmdResult result, const std::string &original_line)
  35 {
  36         if (result == CMD_SUCCESS)
  37                 Utils->RouteCommand(NULL, command, parameters, user);
  38 }
  39
  40 void SpanningTreeUtilities::RouteCommand(TreeServer* origin, const std::string &command, const parameterlist& parameters, User *user)
  41 {
  42         if (!ServerInstance->Parser->IsValidCommand(command, parameters.size(), user))
  43                 return;
  44
  45         /* We know it's non-null because IsValidCommand returned true */
  46         Command* thiscmd = ServerInstance->Parser->GetHandler(command);
  47
  48         RouteDescriptor routing = thiscmd->GetRouting(user, parameters);
  49
  50         std::string sent_cmd = command;
  51         parameterlist params;
  52
  53         if (routing.type == ROUTE_TYPE_LOCALONLY)
  54         {
  55                 /* Broadcast when it's a core command with the default route descriptor and the source is a
  56                  * remote user or a remote server
  57                  */
  58
  59                 Version ver = thiscmd->creator->GetVersion();
  60                 if ((!(ver.Flags & VF_CORE)) || (IS_LOCAL(user)) || (IS_SERVER(user) == ServerInstance->FakeClient))
  61                         return;
  62
  63                 routing = ROUTE_BROADCAST;
  64         }
  65         else if (routing.type == ROUTE_TYPE_OPT_BCAST)
  66         {
  67                 params.push_back("*");
  68                 params.push_back(command);
  69                 sent_cmd = "ENCAP";
  70         }
  71         else if (routing.type == ROUTE_TYPE_OPT_UCAST)
  72         {
  73                 TreeServer* sdest = FindServer(routing.serverdest);
  74                 if (!sdest)
  75                 {
  76                         ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"Trying to route ENCAP to nonexistent server %s",
  77                                 routing.serverdest.c_str());
  78                         return;
  79                 }
  80                 params.push_back(sdest->GetID());
  81                 params.push_back(command);
  82                 sent_cmd = "ENCAP";
  83         }
  84         else
  85         {
  86                 Module* srcmodule = thiscmd->creator;
  87                 Version ver = srcmodule->GetVersion();
  88
  89                 if (!(ver.Flags & (VF_COMMON | VF_CORE)) && srcmodule != Creator)
  90                 {
  91                         ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"Routed command %s from non-VF_COMMON module %s",
  92                                 command.c_str(), srcmodule->ModuleSourceFile.c_str());
  93                         return;
  94                 }
  95         }
  96
  97         std::string output_text;
  98         ServerInstance->Parser->TranslateUIDs(thiscmd->translation, parameters, output_text, true, thiscmd);
  99
 100         params.push_back(output_text);
 101
 102         if (routing.type == ROUTE_TYPE_MESSAGE)
 103         {
 104                 char pfx = 0;
 105                 std::string dest = routing.serverdest;
 106                 if (ServerInstance->Modes->FindPrefix(dest[0]))
 107                 {
 108                         pfx = dest[0];
 109                         dest = dest.substr(1);
 110                 }
 111                 if (dest[0] == '#')
 112                 {
 113                         Channel* c = ServerInstance->FindChan(dest);
 114                         if (!c)
 115                                 return;
 116                         TreeServerList list;
 117                         // TODO OnBuildExemptList hook was here
 118                         GetListOfServersForChannel(c,list,pfx, CUList());
 119                         std::string data = ":" + user->uuid + " " + sent_cmd;
 120                         for (unsigned int x = 0; x < params.size(); x++)
 121                                 data += " " + params[x];
 122                         for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 123                         {
 124                                 TreeSocket* Sock = i->second->GetSocket();
 125                                 if (origin && origin->GetSocket() == Sock)
 126                                         continue;
 127                                 if (Sock)
 128                                         Sock->WriteLine(data);
 129                         }
 130                 }
 131                 else if (dest[0] == '$')
 132                 {
 133                         if (origin)
 134                                 DoOneToAllButSender(user->uuid, sent_cmd, params, origin->GetName());
 135                         else
 136                                 DoOneToMany(user->uuid, sent_cmd, params);
 137                 }
 138                 else
 139                 {
 140                         // user target?
 141                         User* d = ServerInstance->FindNick(dest);
 142                         if (!d)
 143                                 return;
 144                         TreeServer* tsd = BestRouteTo(d->server);
 145                         if (tsd == origin)
 146                                 // huh? no routing stuff around in a circle, please.
 147                                 return;
 148                         DoOneToOne(user->uuid, sent_cmd, params, d->server);
 149                 }
 150         }
 151         else if (routing.type == ROUTE_TYPE_BROADCAST || routing.type == ROUTE_TYPE_OPT_BCAST)
 152         {
 153                 if (origin)
 154                         DoOneToAllButSender(user->uuid, sent_cmd, params, origin->GetName());
 155                 else
 156                         DoOneToMany(user->uuid, sent_cmd, params);
 157         }
 158         else if (routing.type == ROUTE_TYPE_UNICAST || routing.type == ROUTE_TYPE_OPT_UCAST)
 159         {
 160                 if (origin && routing.serverdest == origin->GetName())
 161                         return;
 162                 DoOneToOne(user->uuid, sent_cmd, params, routing.serverdest);
 163         }
 164 }