src/modules/m_ojoin.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 /*
  15  * Written for InspIRCd-1.2 by Taros on the Tel'Laerad M&D Team
  16  * <http://tellaerad.net>
  17  */
  18
  19 #include "inspircd.h"
  20
  21 /* $ModConfig: <ojoin prefix="!" notice="yes" op="yes">
  22  *  Specify the prefix that +Y will grant here, it should be unused.
  23  *  Leave prefix empty if you do not wish +Y to grant a prefix
  24  *  If notice is set to on, upon ojoin, the server will notice
  25  *  the channel saying that the oper is joining on network business
  26  *  If op is set to on, it will give them +o along with +Y */
  27 /* $ModDesc: Provides the /ojoin command, which joins a user to a channel on network business, and gives them +Y, which makes them immune to kick / deop and so on. */
  28 /* $ModAuthor: Taros */
  29 /* $ModAuthorMail: taros34@hotmail.com */
  30
  31 /* A note: This will not protect against kicks from services,
  32  * ulines, or operoverride. */
  33
  34 #define NETWORK_VALUE 9000000
  35
  36 char NPrefix;
  37 bool notice;
  38 bool op;
  39
  40 /** Handle /OJOIN
  41  */
  42 class CommandOjoin : public Command
  43 {
  44  public:
  45         bool active;
  46         CommandOjoin(Module* parent) : Command(parent,"OJOIN", 1)
  47         {
  48                 flags_needed = 'o'; Penalty = 0; syntax = "<channel>";
  49                 active = false;
  50                 TRANSLATE3(TR_NICK, TR_TEXT, TR_END);
  51         }
  52
  53         CmdResult Handle (const std::vector<std::string>& parameters, User *user)
  54         {
  55                 // Make sure the channel name is allowable.
  56                 if (!ServerInstance->IsChannel(parameters[0].c_str(), ServerInstance->Config->Limits.ChanMax))
  57                 {
  58                         user->WriteServ("NOTICE "+std::string(user->nick)+" :*** Invalid characters in channel name or name too long");
  59                         return CMD_FAILURE;
  60                 }
  61
  62                 active = true;
  63                 Channel* channel = Channel::JoinUser(user, parameters[0].c_str(), false, "", false);
  64                 active = false;
  65
  66                 if (channel)
  67                 {
  68                         ServerInstance->SNO->WriteGlobalSno('a', std::string(user->nick)+" used OJOIN to join "+channel->name);
  69
  70                         if (notice)
  71                         {
  72                                 channel = ServerInstance->FindChan(parameters[0]);
  73                                 channel->WriteChannelWithServ(ServerInstance->Config->ServerName.c_str(), "NOTICE %s :%s joined on official network business.",
  74                                         parameters[0].c_str(), user->nick.c_str());
  75                                 ServerInstance->PI->SendChannelNotice(channel, 0, std::string(user->nick) + " joined on official network business.");
  76                         }
  77                 }
  78                 else
  79                 {
  80                         ServerInstance->SNO->WriteGlobalSno('a', std::string(user->nick)+" used OJOIN in "+parameters[0]);
  81                         // they're already in the channel
  82                         std::vector<std::string> modes;
  83                         modes.push_back(parameters[0]);
  84                         modes.push_back("+Y");
  85                         modes.push_back(user->nick);
  86                         ServerInstance->SendGlobalMode(modes, ServerInstance->FakeClient);
  87                 }
  88                 return CMD_SUCCESS;
  89         }
  90 };
  91
  92 /** channel mode +Y
  93  */
  94 class NetworkPrefix : public ModeHandler
  95 {
  96  public:
  97         NetworkPrefix(Module* parent) : ModeHandler(parent, "official-join", 'Y', PARAM_ALWAYS, MODETYPE_CHANNEL)
  98         {
  99                 list = true;
 100                 prefix = NPrefix;
 101                 levelrequired = INT_MAX;
 102                 m_paramtype = TR_NICK;
 103         }
 104
 105         void RemoveMode(Channel* channel, irc::modestacker* stack)
 106         {
 107                 const UserMembList* cl = channel->GetUsers();
 108                 std::vector<std::string> mode_junk;
 109                 mode_junk.push_back(channel->name);
 110                 irc::modestacker modestack(false);
 111                 std::deque<std::string> stackresult;
 112
 113                 for (UserMembCIter i = cl->begin(); i != cl->end(); i++)
 114                 {
 115                         if (i->second->hasMode('Y'))
 116                         {
 117                                 if (stack)
 118                                         stack->Push(this->GetModeChar(), i->first->nick);
 119                                 else
 120                                         modestack.Push(this->GetModeChar(), i->first->nick);
 121                         }
 122                 }
 123
 124                 if (stack)
 125                         return;
 126
 127                 while (modestack.GetStackedLine(stackresult))
 128                 {
 129                         mode_junk.insert(mode_junk.end(), stackresult.begin(), stackresult.end());
 130                         ServerInstance->SendMode(mode_junk, ServerInstance->FakeClient);
 131                         mode_junk.erase(mode_junk.begin() + 1, mode_junk.end());
 132                 }
 133         }
 134
 135         unsigned int GetPrefixRank()
 136         {
 137                 return NETWORK_VALUE;
 138         }
 139
 140         void RemoveMode(User* user, irc::modestacker* stack)
 141         {
 142         }
 143
 144         ModResult AccessCheck(User* source, Channel* channel, std::string &parameter, bool adding)
 145         {
 146                 User* theuser = ServerInstance->FindNick(parameter);
 147                 // remove own privs?
 148                 if (source == theuser && !adding)
 149                         return MOD_RES_ALLOW;
 150
 151                 return MOD_RES_PASSTHRU;
 152         }
 153
 154         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
 155         {
 156                 return MODEACTION_ALLOW;
 157         }
 158
 159 };
 160
 161 class ModuleOjoin : public Module
 162 {
 163         NetworkPrefix* np;
 164         CommandOjoin mycommand;
 165
 166  public:
 167
 168         ModuleOjoin()
 169                 : np(NULL), mycommand(this)
 170         {
 171         }
 172
 173         void init()
 174         {
 175                 /* Load config stuff */
 176                 OnRehash(NULL);
 177
 178                 /* Initialise module variables */
 179                 np = new NetworkPrefix(this);
 180
 181                 ServerInstance->Modules->AddService(*np);
 182                 ServerInstance->Modules->AddService(mycommand);
 183
 184                 Implementation eventlist[] = { I_OnUserPreJoin, I_OnUserPreKick, I_OnRehash };
 185                 ServerInstance->Modules->Attach(eventlist, this, 3);
 186         }
 187
 188         ModResult OnUserPreJoin(User *user, Channel *chan, const char *cname, std::string &privs, const std::string &keygiven)
 189         {
 190                 if (mycommand.active)
 191                 {
 192                         privs += 'Y';
 193                         if (op)
 194                                 privs += 'o';
 195                         return MOD_RES_ALLOW;
 196                 }
 197
 198                 return MOD_RES_PASSTHRU;
 199         }
 200
 201         void OnRehash(User* user)
 202         {
 203                 ConfigTag* Conf = ServerInstance->Config->ConfValue("ojoin");
 204
 205                 if (!np)
 206                 {
 207                         // This is done on module load only
 208                         std::string npre = Conf->getString("prefix");
 209                         NPrefix = npre.empty() ? 0 : npre[0];
 210
 211                         if (NPrefix && ServerInstance->Modes->FindPrefix(NPrefix))
 212                                 throw ModuleException("Looks like the +Y prefix you picked for m_ojoin is already in use. Pick another.");
 213                 }
 214
 215                 notice = Conf->getBool("notice", true);
 216                 op = Conf->getBool("op", true);
 217         }
 218
 219         ModResult OnUserPreKick(User* source, Membership* memb, const std::string &reason)
 220         {
 221                 // Don't do anything if they're not +Y
 222                 if (!memb->hasMode('Y'))
 223                         return MOD_RES_PASSTHRU;
 224
 225                 // Let them do whatever they want to themselves.
 226                 if (source == memb->user)
 227                         return MOD_RES_PASSTHRU;
 228
 229                 source->WriteNumeric(484, source->nick+" "+memb->chan->name+" :Can't kick "+memb->user->nick+" as they're on official network business.");
 230                 return MOD_RES_DENY;
 231         }
 232
 233         ~ModuleOjoin()
 234         {
 235                 delete np;
 236         }
 237
 238         void Prioritize()
 239         {
 240                 ServerInstance->Modules->SetPriority(this, I_OnUserPreJoin, PRIORITY_FIRST);
 241         }
 242
 243         Version GetVersion()
 244         {
 245                 return Version("Network Buisness Join", VF_VENDOR);
 246         }
 247 };
 248
 249 MODULE_INIT(ModuleOjoin)
 250