src/modules/m_blockcaps.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "users.h"
  15 #include "channels.h"
  16 #include "modules.h"
  17 #include "inspircd.h"
  18 #include "mode.h"
  19
  20 /* $ModDesc: Provides support for channel mode +P to block all-CAPS channel messages and notices */
  21
  22
  23 /** Handles the +P channel mode
  24  */
  25 class BlockCaps : public ModeHandler
  26 {
  27  public:
  28         BlockCaps(InspIRCd* Instance) : ModeHandler(Instance, 'P', 0, 0, false, MODETYPE_CHANNEL, false) { }
  29
  30         ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  31         {
  32                 if (adding)
  33                 {
  34                         if (!channel->IsModeSet('P'))
  35                         {
  36                                 channel->SetMode('P',true);
  37                                 return MODEACTION_ALLOW;
  38                         }
  39                 }
  40                 else
  41                 {
  42                         if (channel->IsModeSet('P'))
  43                         {
  44                                 channel->SetMode('P',false);
  45                                 return MODEACTION_ALLOW;
  46                         }
  47                 }
  48
  49                 return MODEACTION_DENY;
  50         }
  51 };
  52
  53 class ModuleBlockCAPS : public Module
  54 {
  55         BlockCaps* bc;
  56         unsigned int percent;
  57         unsigned int minlen;
  58 public:
  59
  60         ModuleBlockCAPS(InspIRCd* Me) : Module::Module(Me)
  61         {
  62                 OnRehash("");
  63                 bc = new BlockCaps(ServerInstance);
  64                 ServerInstance->AddMode(bc, 'P');
  65         }
  66
  67         void Implements(char* List)
  68         {
  69                 List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = 1;
  70         }
  71
  72         virtual void OnRehash(const std::string &param)
  73         {
  74                 ReadConf();
  75         }
  76
  77         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  78         {
  79                 if (text.size() < minlen)
  80                         return 0;
  81
  82                 if (target_type == TYPE_CHANNEL)
  83                 {
  84                         chanrec* c = (chanrec*)dest;
  85
  86                         if (c->IsModeSet('P'))
  87                         {
  88                                 int caps = 0;
  89                                 for (std::string::iterator i = text.begin(); i != text.end(); i++)
  90                                 {
  91                                         if ( (*i >= 'A') && (*i <= 'Z'))
  92                                                 caps++;
  93                                 }
  94                                 if ( (caps * 100 / text.size()) >= percent )
  95                                 {
  96                                         user->WriteServ( "404 %s %s :Can't send all-CAPS to channel (+P set)", user->nick, c->name);
  97                                         return 1;
  98                                 }
  99                         }
 100                 }
 101                 return 0;
 102         }
 103
 104         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 105         {
 106                 return OnUserPreMessage(user,dest,target_type,text,status,exempt_list);
 107         }
 108
 109         void ReadConf()
 110         {
 111                 ConfigReader Conf(ServerInstance);
 112                 percent = Conf.ReadInteger("blockcaps", "percent", "100", 0, true);
 113                 minlen = Conf.ReadInteger("blockcaps", "minlen", "0", 0, true);
 114                 if (percent < 0 || percent > 100)
 115                 {
 116                         ServerInstance->Log(DEFAULT, "<blockcaps:percent> out of range, setting to default of 100.");
 117                         percent = 100;
 118                 }
 119                 if (minlen < 0 || minlen > MAXBUF-1)
 120                 {
 121                         ServerInstance->Log(DEFAULT, "<blockcaps:minlen> out of range, setting to default of 0.");
 122                         minlen = 0;
 123                 }
 124         }
 125
 126         virtual ~ModuleBlockCAPS()
 127         {
 128                 ServerInstance->Modes->DelMode(bc);
 129                 DELETE(bc);
 130         }
 131
 132         virtual Version GetVersion()
 133         {
 134                 return Version(1,1,0,0,VF_COMMON|VF_VENDOR,API_VERSION);
 135         }
 136 };
 137
 138
 139 class ModuleBlockCAPSFactory : public ModuleFactory
 140 {
 141  public:
 142         ModuleBlockCAPSFactory()
 143         {
 144         }
 145
 146         ~ModuleBlockCAPSFactory()
 147         {
 148         }
 149
 150         virtual Module * CreateModule(InspIRCd* Me)
 151         {
 152                 return new ModuleBlockCAPS(Me);
 153         }
 154
 155 };
 156
 157
 158 extern "C" void * init_module( void )
 159 {
 160         return new ModuleBlockCAPSFactory;
 161 }