src/modules/m_namedmodes.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *
   6  * This file is part of InspIRCd.  InspIRCd is free software: you can
   7  * redistribute it and/or modify it under the terms of the GNU General Public
   8  * License as published by the Free Software Foundation, version 2.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  13  * details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include "inspircd.h"
  21
  22 enum
  23 {
  24         // InspIRCd-specific.
  25         RPL_ENDOFPROPLIST = 960,
  26         RPL_PROPLIST = 961
  27 };
  28
  29 static void DisplayList(LocalUser* user, Channel* channel)
  30 {
  31         Numeric::ParamBuilder<1> numeric(user, RPL_PROPLIST);
  32         numeric.AddStatic(channel->name);
  33
  34         const ModeParser::ModeHandlerMap& mhs = ServerInstance->Modes->GetModes(MODETYPE_CHANNEL);
  35         for (ModeParser::ModeHandlerMap::const_iterator i = mhs.begin(); i != mhs.end(); ++i)
  36         {
  37                 ModeHandler* mh = i->second;
  38                 if (!channel->IsModeSet(mh))
  39                         continue;
  40                 numeric.Add("+" + mh->name);
  41                 if (mh->NeedsParam(true))
  42                 {
  43                         if ((mh->name == "key") && (!channel->HasUser(user)) && (!user->HasPrivPermission("channels/auspex")))
  44                                 numeric.Add("<key>");
  45                         else
  46                                 numeric.Add(channel->GetModeParameter(mh));
  47                 }
  48         }
  49         numeric.Flush();
  50         user->WriteNumeric(RPL_ENDOFPROPLIST, channel->name, "End of mode list");
  51 }
  52
  53 class CommandProp : public SplitCommand
  54 {
  55  public:
  56         CommandProp(Module* parent)
  57                 : SplitCommand(parent, "PROP", 1)
  58         {
  59                 syntax = "<user|channel> {[+-]<mode> [<value>]}*";
  60         }
  61
  62         CmdResult HandleLocal(LocalUser* src, const Params& parameters) CXX11_OVERRIDE
  63         {
  64                 Channel* const chan = ServerInstance->FindChan(parameters[0]);
  65                 if (!chan)
  66                 {
  67                         src->WriteNumeric(Numerics::NoSuchChannel(parameters[0]));
  68                         return CMD_FAILURE;
  69                 }
  70
  71                 if (parameters.size() == 1)
  72                 {
  73                         DisplayList(src, chan);
  74                         return CMD_SUCCESS;
  75                 }
  76                 unsigned int i = 1;
  77                 Modes::ChangeList modes;
  78                 while (i < parameters.size())
  79                 {
  80                         std::string prop = parameters[i++];
  81                         if (prop.empty())
  82                                 continue;
  83                         bool plus = prop[0] != '-';
  84                         if (prop[0] == '+' || prop[0] == '-')
  85                                 prop.erase(prop.begin());
  86
  87                         ModeHandler* mh = ServerInstance->Modes->FindMode(prop, MODETYPE_CHANNEL);
  88                         if (mh)
  89                         {
  90                                 if (mh->NeedsParam(plus))
  91                                 {
  92                                         if (i != parameters.size())
  93                                                 modes.push(mh, plus, parameters[i++]);
  94                                 }
  95                                 else
  96                                         modes.push(mh, plus);
  97                         }
  98                 }
  99                 ServerInstance->Modes->ProcessSingle(src, chan, NULL, modes, ModeParser::MODE_CHECKACCESS);
 100                 return CMD_SUCCESS;
 101         }
 102 };
 103
 104 class DummyZ : public ModeHandler
 105 {
 106  public:
 107         DummyZ(Module* parent) : ModeHandler(parent, "namebase", 'Z', PARAM_ALWAYS, MODETYPE_CHANNEL)
 108         {
 109                 list = true;
 110         }
 111
 112         // Handle /MODE #chan Z
 113         void DisplayList(User* user, Channel* chan) CXX11_OVERRIDE
 114         {
 115                 if (IS_LOCAL(user))
 116                         ::DisplayList(static_cast<LocalUser*>(user), chan);
 117         }
 118 };
 119
 120 class ModuleNamedModes : public Module
 121 {
 122         CommandProp cmd;
 123         DummyZ dummyZ;
 124  public:
 125         ModuleNamedModes() : cmd(this), dummyZ(this)
 126         {
 127         }
 128
 129         Version GetVersion() CXX11_OVERRIDE
 130         {
 131                 return Version("Provides the ability to manipulate modes via long names.",VF_VENDOR);
 132         }
 133
 134         void Prioritize() CXX11_OVERRIDE
 135         {
 136                 ServerInstance->Modules->SetPriority(this, I_OnPreMode, PRIORITY_FIRST);
 137         }
 138
 139         ModResult OnPreMode(User* source, User* dest, Channel* channel, Modes::ChangeList& modes) CXX11_OVERRIDE
 140         {
 141                 if (!channel)
 142                         return MOD_RES_PASSTHRU;
 143
 144                 Modes::ChangeList::List& list = modes.getlist();
 145                 for (Modes::ChangeList::List::iterator i = list.begin(); i != list.end(); )
 146                 {
 147                         Modes::Change& curr = *i;
 148                         // Replace all namebase (dummyZ) modes being changed with the actual
 149                         // mode handler and parameter. The parameter format of the namebase mode is
 150                         // <modename>[=<parameter>].
 151                         if (curr.mh == &dummyZ)
 152                         {
 153                                 std::string name = curr.param;
 154                                 std::string value;
 155                                 std::string::size_type eq = name.find('=');
 156                                 if (eq != std::string::npos)
 157                                 {
 158                                         value.assign(name, eq + 1, std::string::npos);
 159                                         name.erase(eq);
 160                                 }
 161
 162                                 ModeHandler* mh = ServerInstance->Modes->FindMode(name, MODETYPE_CHANNEL);
 163                                 if (!mh)
 164                                 {
 165                                         // Mode handler not found
 166                                         i = list.erase(i);
 167                                         continue;
 168                                 }
 169
 170                                 curr.param.clear();
 171                                 if (mh->NeedsParam(curr.adding))
 172                                 {
 173                                         if (value.empty())
 174                                         {
 175                                                 // Mode needs a parameter but there wasn't one
 176                                                 i = list.erase(i);
 177                                                 continue;
 178                                         }
 179
 180                                         // Change parameter to the text after the '='
 181                                         curr.param = value;
 182                                 }
 183
 184                                 // Put the actual ModeHandler in place of the namebase handler
 185                                 curr.mh = mh;
 186                         }
 187
 188                         ++i;
 189                 }
 190
 191                 return MOD_RES_PASSTHRU;
 192         }
 193 };
 194
 195 MODULE_INIT(ModuleNamedModes)