src/modules/m_spanningtree/postcommand.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *        the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $ModDesc: Provides a spanning tree server link protocol */
  15
  16 #include "inspircd.h"
  17 #include "socket.h"
  18 #include "xline.h"
  19
  20 #include "main.h"
  21 #include "utils.h"
  22 #include "treeserver.h"
  23 #include "treesocket.h"
  24
  25 /* $ModDep: m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/treesocket.h */
  26
  27 void ModuleSpanningTree::OnPostCommand(const std::string &command, const std::vector<std::string>& parameters, LocalUser *user, CmdResult result, const std::string &original_line)
  28 {
  29         if (result == CMD_SUCCESS)
  30                 Utils->RouteCommand(NULL, command, parameters, user);
  31 }
  32
  33 void SpanningTreeUtilities::RouteCommand(TreeServer* origin, const std::string &command, const parameterlist& parameters, User *user)
  34 {
  35         if (!ServerInstance->IsValidModuleCommand(command, parameters.size(), user))
  36                 return;
  37
  38         /* We know it's non-null because IsValidModuleCommand returned true */
  39         Command* thiscmd = ServerInstance->Parser->GetHandler(command);
  40
  41         RouteDescriptor routing = thiscmd->GetRouting(user, parameters);
  42
  43         std::string sent_cmd = command;
  44         parameterlist params;
  45
  46         if (routing.type == ROUTE_TYPE_LOCALONLY)
  47         {
  48                 Module* srcmodule = thiscmd->creator;
  49                 Version ver = srcmodule->GetVersion();
  50
  51                 if ((ver.Flags & VF_CORE) && !IS_LOCAL(user))
  52                         routing = ROUTE_BROADCAST;
  53                 else
  54                         return;
  55                 if (IS_SERVER(user) && user != ServerInstance->FakeClient)
  56                         return;
  57         }
  58         else if (routing.type == ROUTE_TYPE_OPT_BCAST)
  59         {
  60                 params.push_back("*");
  61                 params.push_back(command);
  62                 sent_cmd = "ENCAP";
  63         }
  64         else if (routing.type == ROUTE_TYPE_OPT_UCAST)
  65         {
  66                 TreeServer* sdest = FindServer(routing.serverdest);
  67                 if (!sdest)
  68                 {
  69                         ServerInstance->Logs->Log("m_spanningtree",ERROR,"Trying to route ENCAP to nonexistant server %s",
  70                                 routing.serverdest.c_str());
  71                         return;
  72                 }
  73                 params.push_back(sdest->GetID());
  74                 params.push_back(command);
  75                 sent_cmd = "ENCAP";
  76         }
  77         else
  78         {
  79                 Module* srcmodule = thiscmd->creator;
  80                 Version ver = srcmodule->GetVersion();
  81
  82                 if (!(ver.Flags & (VF_COMMON | VF_CORE)))
  83                 {
  84                         ServerInstance->Logs->Log("m_spanningtree",ERROR,"Routed command %s from non-VF_COMMON module %s",
  85                                 command.c_str(), srcmodule->ModuleSourceFile.c_str());
  86                         return;
  87                 }
  88         }
  89
  90         std::string output_text;
  91         ServerInstance->Parser->TranslateUIDs(thiscmd->translation, parameters, output_text, true, thiscmd);
  92
  93         params.push_back(output_text);
  94
  95         if (routing.type == ROUTE_TYPE_MESSAGE)
  96         {
  97                 char pfx = 0;
  98                 std::string dest = routing.serverdest;
  99                 if (ServerInstance->Modes->FindPrefix(dest[0]))
 100                 {
 101                         pfx = dest[0];
 102                         dest = dest.substr(1);
 103                 }
 104                 if (dest[0] == '#')
 105                 {
 106                         Channel* c = ServerInstance->FindChan(dest);
 107                         if (!c)
 108                                 return;
 109                         TreeServerList list;
 110                         // TODO OnBuildExemptList hook was here
 111                         GetListOfServersForChannel(c,list,pfx, CUList());
 112                         std::string data = ":" + user->uuid + " " + sent_cmd;
 113                         for (unsigned int x = 0; x < params.size(); x++)
 114                                 data += " " + params[x];
 115                         for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 116                         {
 117                                 TreeSocket* Sock = i->second->GetSocket();
 118                                 if (origin && origin->GetSocket() == Sock)
 119                                         continue;
 120                                 if (Sock)
 121                                         Sock->WriteLine(data);
 122                         }
 123                 }
 124                 else if (dest[0] == '$')
 125                 {
 126                         if (origin)
 127                                 DoOneToAllButSender(user->uuid, sent_cmd, params, origin->GetName());
 128                         else
 129                                 DoOneToMany(user->uuid, sent_cmd, params);
 130                 }
 131                 else
 132                 {
 133                         // user target?
 134                         User* d = ServerInstance->FindNick(dest);
 135                         if (!d)
 136                                 return;
 137                         TreeServer* tsd = BestRouteTo(d->server);
 138                         if (tsd == origin)
 139                                 // huh? no routing stuff around in a circle, please.
 140                                 return;
 141                         DoOneToOne(user->uuid, sent_cmd, params, d->server);
 142                 }
 143         }
 144         else if (routing.type == ROUTE_TYPE_BROADCAST || routing.type == ROUTE_TYPE_OPT_BCAST)
 145         {
 146                 if (origin)
 147                         DoOneToAllButSender(user->uuid, sent_cmd, params, origin->GetName());
 148                 else
 149                         DoOneToMany(user->uuid, sent_cmd, params);
 150         }
 151         else if (routing.type == ROUTE_TYPE_UNICAST || routing.type == ROUTE_TYPE_OPT_UCAST)
 152         {
 153                 if (origin && routing.serverdest == origin->GetName())
 154                         return;
 155                 DoOneToOne(user->uuid, sent_cmd, params, routing.serverdest);
 156         }
 157 }