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         float percent;
  57         unsigned int minlen;
  58 public:
  59
  60         ModuleBlockCAPS(InspIRCd* Me) : Module::Module(Me)
  61         {
  62                 OnRehash(NULL,"");
  63                 bc = new BlockCaps(ServerInstance);
  64                 if (!ServerInstance->AddMode(bc, 'P'))
  65                         throw ModuleException("Could not add new modes!");
  66         }
  67
  68         void Implements(char* List)
  69         {
  70                 List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = 1;
  71         }
  72
  73         virtual void OnRehash(userrec* user, const std::string &param)
  74         {
  75                 ReadConf();
  76         }
  77
  78         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  79         {
  80                 ServerInstance->Log(DEBUG, "*** " + ConvToStr( ( 20 * 100 / 26)  ));
  81                 if (target_type == TYPE_CHANNEL)
  82                 {
  83                         if ((!IS_LOCAL(user)) || (text.length() < minlen))
  84                                 return 0;
  85
  86                         chanrec* c = (chanrec*)dest;
  87
  88                         if (c->IsModeSet('P'))
  89                         {
  90                                 float caps = 0;
  91                                 for (std::string::iterator i = text.begin(); i != text.end(); i++)
  92                                 {
  93                                         if ( (*i >= 'A') && (*i <= 'Z'))
  94                                                 caps++;
  95                                 }
  96                                 if ( ((caps / text.length()) * 100) >= percent )
  97                                 {
  98                                         user->WriteServ( "404 %s %s :Can't send all-CAPS to channel (+P set)", user->nick, c->name);
  99                                         return 1;
 100                                 }
 101                         }
 102                 }
 103                 return 0;
 104         }
 105
 106         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 107         {
 108                 return OnUserPreMessage(user,dest,target_type,text,status,exempt_list);
 109         }
 110
 111         void ReadConf()
 112         {
 113                 ConfigReader Conf(ServerInstance);
 114                 percent = Conf.ReadInteger("blockcaps", "percent", "100", 0, true);
 115                 minlen = Conf.ReadInteger("blockcaps", "minlen", "0", 0, true);
 116                 if (percent < 0 || percent > 100)
 117                 {
 118                         ServerInstance->Log(DEFAULT, "<blockcaps:percent> out of range, setting to default of 100.");
 119                         percent = 100;
 120                 }
 121                 if (minlen < 0 || minlen > MAXBUF-1)
 122                 {
 123                         ServerInstance->Log(DEFAULT, "<blockcaps:minlen> out of range, setting to default of 0.");
 124                         minlen = 0;
 125                 }
 126         }
 127
 128         virtual ~ModuleBlockCAPS()
 129         {
 130                 ServerInstance->Modes->DelMode(bc);
 131                 DELETE(bc);
 132         }
 133
 134         virtual Version GetVersion()
 135         {
 136                 return Version(1,1,0,0,VF_COMMON|VF_VENDOR,API_VERSION);
 137         }
 138 };
 139
 140
 141 class ModuleBlockCAPSFactory : public ModuleFactory
 142 {
 143  public:
 144         ModuleBlockCAPSFactory()
 145         {
 146         }
 147
 148         ~ModuleBlockCAPSFactory()
 149         {
 150         }
 151
 152         virtual Module * CreateModule(InspIRCd* Me)
 153         {
 154                 return new ModuleBlockCAPS(Me);
 155         }
 156
 157 };
 158
 159
 160 extern "C" void * init_module( void )
 161 {
 162         return new ModuleBlockCAPSFactory;
 163 }