src/modules/m_auditorium.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 #include "inspircd.h"
  15
  16 /* $ModDesc: Allows for auditorium channels (+u) where nobody can see others joining and parting or the nick list */
  17
  18 class AuditoriumMode : public ModeHandler
  19 {
  20  public:
  21         AuditoriumMode(Module* Creator) : ModeHandler(Creator, "auditorium", 'u', PARAM_NONE, MODETYPE_CHANNEL)
  22         {
  23                 levelrequired = OP_VALUE;
  24         }
  25
  26         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  27         {
  28                 if (channel->IsModeSet(this) == adding)
  29                         return MODEACTION_DENY;
  30                 channel->SetMode(this, adding);
  31                 return MODEACTION_ALLOW;
  32         }
  33 };
  34
  35 class ModuleAuditorium : public Module
  36 {
  37  private:
  38         AuditoriumMode aum;
  39         bool OpsVisible;
  40         bool OpsCanSee;
  41         bool OperCanSee;
  42  public:
  43         ModuleAuditorium() : aum(this)
  44         {
  45         }
  46
  47         void init()
  48         {
  49                 ServerInstance->Modules->AddService(aum);
  50
  51                 OnRehash(NULL);
  52
  53                 Implementation eventlist[] = { I_OnUserJoin, I_OnUserPart, I_OnUserKick, I_OnBuildNeighborList, I_OnNamesListItem, I_OnRehash };
  54                 ServerInstance->Modules->Attach(eventlist, this, 6);
  55         }
  56
  57         ~ModuleAuditorium()
  58         {
  59         }
  60
  61         void OnRehash(User* user)
  62         {
  63                 ConfigTag* tag = ServerInstance->Config->ConfValue("auditorium");
  64                 OpsVisible = tag->getBool("opvisible");
  65                 OpsCanSee = tag->getBool("opcansee");
  66                 OperCanSee = tag->getBool("opercansee", true);
  67         }
  68
  69         Version GetVersion()
  70         {
  71                 return Version("Allows for auditorium channels (+u) where nobody can see others joining and parting or the nick list", VF_VENDOR);
  72         }
  73
  74         /* Can they be seen by everyone? */
  75         bool IsVisible(Membership* memb)
  76         {
  77                 if (!memb->chan->IsModeSet(&aum))
  78                         return true;
  79
  80                 ModResult res = ServerInstance->OnCheckExemption(memb->user, memb->chan, "auditorium-vis");
  81                 return res.check(OpsVisible && memb->getRank() >= OP_VALUE);
  82         }
  83
  84         /* Can they see this specific membership? */
  85         bool CanSee(User* issuer, Membership* memb)
  86         {
  87                 // If user is oper and operoverride is on, don't touch the list
  88                 if (OperCanSee && issuer->HasPrivPermission("channels/auspex"))
  89                         return true;
  90
  91                 // You can always see yourself
  92                 if (issuer == memb->user)
  93                         return true;
  94
  95                 // Can you see the list by permission?
  96                 ModResult res = ServerInstance->OnCheckExemption(issuer,memb->chan,"auditorium-see");
  97                 if (res.check(OpsCanSee && memb->chan->GetPrefixValue(issuer) >= OP_VALUE))
  98                         return true;
  99
 100                 return false;
 101         }
 102
 103         void OnNamesListItem(User* issuer, Membership* memb, std::string &prefixes, std::string &nick)
 104         {
 105                 // Some module already hid this from being displayed, don't bother
 106                 if (nick.empty())
 107                         return;
 108
 109                 if (IsVisible(memb))
 110                         return;
 111
 112                 if (CanSee(issuer, memb))
 113                         return;
 114
 115                 nick.clear();
 116         }
 117
 118         /** Build CUList for showing this join/part/kick */
 119         void BuildExcept(Membership* memb, CUList& excepts)
 120         {
 121                 if (IsVisible(memb))
 122                         return;
 123
 124                 const UserMembList* users = memb->chan->GetUsers();
 125                 for(UserMembCIter i = users->begin(); i != users->end(); i++)
 126                 {
 127                         if (IS_LOCAL(i->first) && !CanSee(i->first, memb))
 128                                 excepts.insert(i->first);
 129                 }
 130         }
 131
 132         void OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
 133         {
 134                 BuildExcept(memb, excepts);
 135         }
 136
 137         void OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 138         {
 139                 BuildExcept(memb, excepts);
 140         }
 141
 142         void OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 143         {
 144                 BuildExcept(memb, excepts);
 145         }
 146
 147         void OnBuildNeighborList(User* source, UserChanList &include, std::map<User*,bool> &exception)
 148         {
 149                 UCListIter i = include.begin();
 150                 while (i != include.end())
 151                 {
 152                         Channel* c = *i++;
 153                         Membership* memb = c->GetUser(source);
 154                         if (!memb || IsVisible(memb))
 155                                 continue;
 156                         // this channel should not be considered when listing my neighbors
 157                         include.erase(c);
 158                         // however, that might hide me from ops that can see me...
 159                         const UserMembList* users = c->GetUsers();
 160                         for(UserMembCIter j = users->begin(); j != users->end(); j++)
 161                         {
 162                                 if (IS_LOCAL(j->first) && CanSee(j->first, memb))
 163                                         exception[j->first] = true;
 164                         }
 165                 }
 166         }
 167 };
 168
 169 MODULE_INIT(ModuleAuditorium)