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 static void DisplayList(User* user, Channel* channel)
  23 {
  24         std::stringstream items;
  25         const ModeParser::ModeHandlerMap& mhs = ServerInstance->Modes->GetModes(MODETYPE_CHANNEL);
  26         for (ModeParser::ModeHandlerMap::const_iterator i = mhs.begin(); i != mhs.end(); ++i)
  27         {
  28                 ModeHandler* mh = i->second;
  29                 if (!channel->IsModeSet(mh))
  30                         continue;
  31                 items << " +" << mh->name;
  32                 if (mh->GetNumParams(true))
  33                 {
  34                         if ((mh->name == "key") && (!channel->HasUser(user)) && (!user->HasPrivPermission("channels/auspex")))
  35                                 items << " <key>";
  36                         else
  37                                 items << " " << channel->GetModeParameter(mh);
  38                 }
  39         }
  40         const std::string line = ":" + ServerInstance->Config->ServerName + " 961 " + user->nick + " " + channel->name;
  41         user->SendText(line, items);
  42         user->WriteNumeric(960, "%s :End of mode list", channel->name.c_str());
  43 }
  44
  45 class CommandProp : public Command
  46 {
  47  public:
  48         CommandProp(Module* parent) : Command(parent, "PROP", 1)
  49         {
  50                 syntax = "<user|channel> {[+-]<mode> [<value>]}*";
  51         }
  52
  53         CmdResult Handle(const std::vector<std::string> &parameters, User *src)
  54         {
  55                 Channel* const chan = ServerInstance->FindChan(parameters[0]);
  56                 if (!chan)
  57                 {
  58                         src->WriteNumeric(ERR_NOSUCHNICK, "%s :No such nick/channel", parameters[0].c_str());
  59                         return CMD_FAILURE;
  60                 }
  61
  62                 if (parameters.size() == 1)
  63                 {
  64                         DisplayList(src, chan);
  65                         return CMD_SUCCESS;
  66                 }
  67                 unsigned int i = 1;
  68                 Modes::ChangeList modes;
  69                 while (i < parameters.size())
  70                 {
  71                         std::string prop = parameters[i++];
  72                         if (prop.empty())
  73                                 continue;
  74                         bool plus = prop[0] != '-';
  75                         if (prop[0] == '+' || prop[0] == '-')
  76                                 prop.erase(prop.begin());
  77
  78                         ModeHandler* mh = ServerInstance->Modes->FindMode(prop, MODETYPE_CHANNEL);
  79                         if (mh)
  80                         {
  81                                 if (mh->GetNumParams(plus))
  82                                 {
  83                                         if (i != parameters.size())
  84                                                 modes.push(mh, plus, parameters[i++]);
  85                                 }
  86                                 else
  87                                         modes.push(mh, plus);
  88                         }
  89                 }
  90                 ServerInstance->Modes->ProcessSingle(src, chan, NULL, modes, ModeParser::MODE_CHECKACCESS);
  91                 return CMD_SUCCESS;
  92         }
  93 };
  94
  95 class DummyZ : public ModeHandler
  96 {
  97  public:
  98         DummyZ(Module* parent) : ModeHandler(parent, "namebase", 'Z', PARAM_ALWAYS, MODETYPE_CHANNEL)
  99         {
 100                 list = true;
 101         }
 102
 103         // Handle /MODE #chan Z
 104         void DisplayList(User* user, Channel* chan)
 105         {
 106                 ::DisplayList(user, chan);
 107         }
 108 };
 109
 110 class ModuleNamedModes : public Module
 111 {
 112         CommandProp cmd;
 113         DummyZ dummyZ;
 114  public:
 115         ModuleNamedModes() : cmd(this), dummyZ(this)
 116         {
 117         }
 118
 119         Version GetVersion() CXX11_OVERRIDE
 120         {
 121                 return Version("Provides the ability to manipulate modes via long names.",VF_VENDOR);
 122         }
 123
 124         void Prioritize()
 125         {
 126                 ServerInstance->Modules->SetPriority(this, I_OnPreMode, PRIORITY_FIRST);
 127         }
 128
 129         ModResult OnPreMode(User* source, User* dest, Channel* channel, Modes::ChangeList& modes) CXX11_OVERRIDE
 130         {
 131                 if (!channel)
 132                         return MOD_RES_PASSTHRU;
 133
 134                 Modes::ChangeList::List& list = modes.getlist();
 135                 for (Modes::ChangeList::List::iterator i = list.begin(); i != list.end(); )
 136                 {
 137                         Modes::Change& curr = *i;
 138                         // Replace all namebase (dummyZ) modes being changed with the actual
 139                         // mode handler and parameter. The parameter format of the namebase mode is
 140                         // <modename>[=<parameter>].
 141                         if (curr.mh == &dummyZ)
 142                         {
 143                                 std::string name = curr.param;
 144                                 std::string value;
 145                                 std::string::size_type eq = name.find('=');
 146                                 if (eq != std::string::npos)
 147                                 {
 148                                         value.assign(name, eq + 1, std::string::npos);
 149                                         name.erase(eq);
 150                                 }
 151
 152                                 ModeHandler* mh = ServerInstance->Modes->FindMode(name, MODETYPE_CHANNEL);
 153                                 if (!mh)
 154                                 {
 155                                         // Mode handler not found
 156                                         i = list.erase(i);
 157                                         continue;
 158                                 }
 159
 160                                 curr.param.clear();
 161                                 if (mh->GetNumParams(curr.adding))
 162                                 {
 163                                         if (value.empty())
 164                                         {
 165                                                 // Mode needs a parameter but there wasn't one
 166                                                 i = list.erase(i);
 167                                                 continue;
 168                                         }
 169
 170                                         // Change parameter to the text after the '='
 171                                         curr.param = value;
 172                                 }
 173
 174                                 // Put the actual ModeHandler in place of the namebase handler
 175                                 curr.mh = mh;
 176                         }
 177
 178                         ++i;
 179                 }
 180
 181                 return MOD_RES_PASSTHRU;
 182         }
 183 };
 184
 185 MODULE_INIT(ModuleNamedModes)