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 #include "inspircd.h"
  21
  22 #include "main.h"
  23 #include "utils.h"
  24 #include "treeserver.h"
  25 #include "commandbuilder.h"
  26
  27 void ModuleSpanningTree::OnPostCommand(Command* command, const CommandBase::Params& parameters, LocalUser* user, CmdResult result, bool loop)
  28 {
  29         if (result == CMD_SUCCESS)
  30                 Utils->RouteCommand(NULL, command, parameters, user);
  31 }
  32
  33 void SpanningTreeUtilities::RouteCommand(TreeServer* origin, CommandBase* thiscmd, const CommandBase::Params& parameters, User* user)
  34 {
  35         const std::string& command = thiscmd->name;
  36         RouteDescriptor routing = thiscmd->GetRouting(user, parameters);
  37         if (routing.type == ROUTE_TYPE_LOCALONLY)
  38                 return;
  39
  40         const bool encap = ((routing.type == ROUTE_TYPE_OPT_BCAST) || (routing.type == ROUTE_TYPE_OPT_UCAST));
  41         CmdBuilder params(user, encap ? "ENCAP" : command.c_str());
  42         params.push_tags(parameters.GetTags());
  43         TreeServer* sdest = NULL;
  44
  45         if (routing.type == ROUTE_TYPE_OPT_BCAST)
  46         {
  47                 params.push('*');
  48                 params.push_back(command);
  49         }
  50         else if (routing.type == ROUTE_TYPE_UNICAST || routing.type == ROUTE_TYPE_OPT_UCAST)
  51         {
  52                 sdest = static_cast<TreeServer*>(routing.server);
  53                 if (!sdest)
  54                 {
  55                         // Assume the command handler already validated routing.serverdest and have only returned success if the target is something that the
  56                         // user executing the command is allowed to look up e.g. target is not an uuid if user is local.
  57                         sdest = FindRouteTarget(routing.serverdest);
  58                         if (!sdest)
  59                         {
  60                                 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Trying to route %s%s to nonexistent server %s", (encap ? "ENCAP " : ""), command.c_str(), routing.serverdest.c_str());
  61                                 return;
  62                         }
  63                 }
  64
  65                 if (encap)
  66                 {
  67                         params.push_back(sdest->GetID());
  68                         params.push_back(command);
  69                 }
  70         }
  71         else
  72         {
  73                 Module* srcmodule = thiscmd->creator;
  74                 Version ver = srcmodule->GetVersion();
  75
  76                 if (!(ver.Flags & (VF_COMMON | VF_CORE)) && srcmodule != Creator)
  77                 {
  78                         ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Routed command %s from non-VF_COMMON module %s",
  79                                 command.c_str(), srcmodule->ModuleSourceFile.c_str());
  80                         return;
  81                 }
  82         }
  83
  84         std::string output_text = CommandParser::TranslateUIDs(thiscmd->translation, parameters, true, thiscmd);
  85
  86         params.push_back(output_text);
  87
  88         if (routing.type == ROUTE_TYPE_MESSAGE)
  89         {
  90                 char pfx = 0;
  91                 std::string dest = routing.serverdest;
  92                 if (ServerInstance->Modes->FindPrefix(dest[0]))
  93                 {
  94                         pfx = dest[0];
  95                         dest.erase(dest.begin());
  96                 }
  97                 if (dest[0] == '#')
  98                 {
  99                         Channel* c = ServerInstance->FindChan(dest);
 100                         if (!c)
 101                                 return;
 102                         // TODO OnBuildExemptList hook was here
 103                         CUList exempts;
 104                         SendChannelMessage(user->uuid, c, parameters[1], pfx, parameters.GetTags(), exempts, command.c_str(), origin ? origin->GetSocket() : NULL);
 105                 }
 106                 else if (dest[0] == '$')
 107                 {
 108                         params.Forward(origin);
 109                 }
 110                 else
 111                 {
 112                         // user target?
 113                         User* d = ServerInstance->FindNick(dest);
 114                         if (!d || IS_LOCAL(d))
 115                                 return;
 116                         TreeServer* tsd = TreeServer::Get(d)->GetRoute();
 117                         if (tsd == origin)
 118                                 // huh? no routing stuff around in a circle, please.
 119                                 return;
 120                         params.Unicast(d);
 121                 }
 122         }
 123         else if (routing.type == ROUTE_TYPE_BROADCAST || routing.type == ROUTE_TYPE_OPT_BCAST)
 124         {
 125                 params.Forward(origin);
 126         }
 127         else if (routing.type == ROUTE_TYPE_UNICAST || routing.type == ROUTE_TYPE_OPT_UCAST)
 128         {
 129                 params.Unicast(sdest->ServerUser);
 130         }
 131 }