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[] = {
  54                         I_OnUserJoin, I_OnUserPart, I_OnUserKick,
  55                         I_OnBuildNeighborList, I_OnNamesListItem, I_OnSendWhoLine,
  56                         I_OnRehash };
  57                 ServerInstance->Modules->Attach(eventlist, this, 7);
  58         }
  59
  60         ~ModuleAuditorium()
  61         {
  62         }
  63
  64         void OnRehash(User* user)
  65         {
  66                 ConfigTag* tag = ServerInstance->Config->ConfValue("auditorium");
  67                 OpsVisible = tag->getBool("opvisible");
  68                 OpsCanSee = tag->getBool("opcansee");
  69                 OperCanSee = tag->getBool("opercansee", true);
  70         }
  71
  72         Version GetVersion()
  73         {
  74                 return Version("Allows for auditorium channels (+u) where nobody can see others joining and parting or the nick list", VF_VENDOR);
  75         }
  76
  77         /* Can they be seen by everyone? */
  78         bool IsVisible(Membership* memb)
  79         {
  80                 if (!memb->chan->IsModeSet(&aum))
  81                         return true;
  82
  83                 ModResult res = ServerInstance->OnCheckExemption(memb->user, memb->chan, "auditorium-vis");
  84                 return res.check(OpsVisible && memb->getRank() >= OP_VALUE);
  85         }
  86
  87         /* Can they see this specific membership? */
  88         bool CanSee(User* issuer, Membership* memb)
  89         {
  90                 // If user is oper and operoverride is on, don't touch the list
  91                 if (OperCanSee && issuer->HasPrivPermission("channels/auspex"))
  92                         return true;
  93
  94                 // You can always see yourself
  95                 if (issuer == memb->user)
  96                         return true;
  97
  98                 // Can you see the list by permission?
  99                 ModResult res = ServerInstance->OnCheckExemption(issuer,memb->chan,"auditorium-see");
 100                 if (res.check(OpsCanSee && memb->chan->GetPrefixValue(issuer) >= OP_VALUE))
 101                         return true;
 102
 103                 return false;
 104         }
 105
 106         void OnNamesListItem(User* issuer, Membership* memb, std::string &prefixes, std::string &nick)
 107         {
 108                 // Some module already hid this from being displayed, don't bother
 109                 if (nick.empty())
 110                         return;
 111
 112                 if (IsVisible(memb))
 113                         return;
 114
 115                 if (CanSee(issuer, memb))
 116                         return;
 117
 118                 nick.clear();
 119         }
 120
 121         /** Build CUList for showing this join/part/kick */
 122         void BuildExcept(Membership* memb, CUList& excepts)
 123         {
 124                 if (IsVisible(memb))
 125                         return;
 126
 127                 const UserMembList* users = memb->chan->GetUsers();
 128                 for(UserMembCIter i = users->begin(); i != users->end(); i++)
 129                 {
 130                         if (IS_LOCAL(i->first) && !CanSee(i->first, memb))
 131                                 excepts.insert(i->first);
 132                 }
 133         }
 134
 135         void OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
 136         {
 137                 BuildExcept(memb, excepts);
 138         }
 139
 140         void OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 141         {
 142                 BuildExcept(memb, excepts);
 143         }
 144
 145         void OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 146         {
 147                 BuildExcept(memb, excepts);
 148         }
 149
 150         void OnBuildNeighborList(User* source, UserChanList &include, std::map<User*,bool> &exception)
 151         {
 152                 UCListIter i = include.begin();
 153                 while (i != include.end())
 154                 {
 155                         Channel* c = *i++;
 156                         Membership* memb = c->GetUser(source);
 157                         if (!memb || IsVisible(memb))
 158                                 continue;
 159                         // this channel should not be considered when listing my neighbors
 160                         include.erase(c);
 161                         // however, that might hide me from ops that can see me...
 162                         const UserMembList* users = c->GetUsers();
 163                         for(UserMembCIter j = users->begin(); j != users->end(); j++)
 164                         {
 165                                 if (IS_LOCAL(j->first) && CanSee(j->first, memb))
 166                                         exception[j->first] = true;
 167                         }
 168                 }
 169         }
 170
 171         void OnSendWhoLine(User* source, const std::vector<std::string>& params, User* user, std::string& line)
 172         {
 173                 Channel* channel = ServerInstance->FindChan(params[0]);
 174                 if (!channel)
 175                         return;
 176                 Membership* memb = channel->GetUser(user);
 177                 if (IsVisible(memb))
 178                         return;
 179                 if (CanSee(source, memb))
 180                         return;
 181                 line.clear();
 182         }
 183 };
 184
 185 MODULE_INIT(ModuleAuditorium)