src/modules/m_stripcolor.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
  19 /* $ModDesc: Provides channel +S mode (strip ansi colour) */
  20
  21 /** Handles channel mode +S
  22  */
  23 class ChannelStripColor : public ModeHandler
  24 {
  25  public:
  26         ChannelStripColor(InspIRCd* Instance) : ModeHandler(Instance, 'S', 0, 0, false, MODETYPE_CHANNEL, false) { }
  27
  28         ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  29         {
  30                 if (adding)
  31                 {
  32                         if (!channel->IsModeSet('S'))
  33                         {
  34                                 channel->SetMode('S',true);
  35                                 return MODEACTION_ALLOW;
  36                         }
  37                 }
  38                 else
  39                 {
  40                         if (channel->IsModeSet('S'))
  41                         {
  42                                 channel->SetMode('S',false);
  43                                 return MODEACTION_ALLOW;
  44                         }
  45                 }
  46
  47                 return MODEACTION_DENY;
  48         }
  49 };
  50
  51 /** Handles user mode +S
  52  */
  53 class UserStripColor : public ModeHandler
  54 {
  55  public:
  56         UserStripColor(InspIRCd* Instance) : ModeHandler(Instance, 'S', 0, 0, false, MODETYPE_USER, false) { }
  57
  58         ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  59         {
  60                 /* Only opers can change other users modes */
  61                 if ((source != dest) && (!*source->oper))
  62                         return MODEACTION_DENY;
  63
  64                 if (adding)
  65                 {
  66                         if (!dest->IsModeSet('S'))
  67                         {
  68                                 dest->SetMode('S',true);
  69                                 return MODEACTION_ALLOW;
  70                         }
  71                 }
  72                 else
  73                 {
  74                         if (dest->IsModeSet('S'))
  75                         {
  76                                 dest->SetMode('S',false);
  77                                 return MODEACTION_ALLOW;
  78                         }
  79                 }
  80
  81                 return MODEACTION_DENY;
  82         }
  83 };
  84
  85
  86 class ModuleStripColor : public Module
  87 {
  88         bool AllowChanOps;
  89         ChannelStripColor *csc;
  90         UserStripColor *usc;
  91
  92  public:
  93         ModuleStripColor(InspIRCd* Me) : Module::Module(Me)
  94         {
  95                 OnRehash(NULL, "");
  96
  97                 usc = new UserStripColor(ServerInstance);
  98                 csc = new ChannelStripColor(ServerInstance);
  99
 100                 if (!ServerInstance->AddMode(usc, 'S') || !ServerInstance->AddMode(csc, 'S'))
 101                         throw ModuleException("Could not add new modes!");
 102         }
 103
 104         void Implements(char* List)
 105         {
 106                 List[I_OnRehash] = List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = 1;
 107         }
 108
 109         virtual ~ModuleStripColor()
 110         {
 111                 ServerInstance->Modes->DelMode(usc);
 112                 ServerInstance->Modes->DelMode(csc);
 113                 DELETE(usc);
 114                 DELETE(csc);
 115         }
 116
 117         // ANSI colour stripping based on C example by Doc (Peter Wood)
 118         virtual void ReplaceLine(std::string &sentence)
 119         {
 120                 int i, a, len, remove;
 121                 len = sentence.length();
 122
 123                 for (i = 0; i < len; i++)
 124                 {
 125                         remove = 0;
 126
 127                         switch (sentence[i])
 128                         {
 129                                 case 2:
 130                                 case 15:
 131                                 case 22:
 132                                 case 21:
 133                                 case 31:
 134                                         remove++;
 135                                 break;
 136
 137                                 case 3:
 138                                         remove = 1;
 139
 140                                         if (isdigit(sentence[i + remove]))
 141                                                 remove++;
 142
 143                                         if (isdigit(sentence[i + remove]))
 144                                                 remove++;
 145
 146                                         if (sentence[i + remove] == ',')
 147                                         {
 148                                                 remove += 2;
 149
 150                                                 if (isdigit(sentence[i + remove]))
 151                                                         remove++;
 152                                         }
 153                                 break;
 154                         }
 155
 156                         if (remove != 0)
 157                         {
 158                                 len -= remove;
 159
 160                                 for (a = i; a <= len; a++)
 161                                         sentence[a] = sentence[a + remove];
 162                                 i--;
 163                         }
 164                 }
 165         }
 166
 167         virtual void OnRehash(userrec* user, const std::string &parameter)
 168         {
 169                 ConfigReader Conf(ServerInstance);
 170
 171                 AllowChanOps = Conf.ReadFlag("stripcolor", "allowchanops", 0);
 172         }
 173
 174         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 175         {
 176                 if (!IS_LOCAL(user))
 177                         return 0;
 178
 179                 bool active = false;
 180                 if (target_type == TYPE_USER)
 181                 {
 182                         userrec* t = (userrec*)dest;
 183                         active = t->IsModeSet('S');
 184                 }
 185                 else if (target_type == TYPE_CHANNEL)
 186                 {
 187                         chanrec* t = (chanrec*)dest;
 188
 189                         // check if we allow ops to bypass filtering, if we do, check if they're opped accordingly.
 190                         // note: short circut logic here, don't wreck it. -- w00t
 191                         if (!AllowChanOps || AllowChanOps && t->GetStatus(user) != STATUS_OP)
 192                                 active = t->IsModeSet('S');
 193                 }
 194
 195                 if (active)
 196                 {
 197                         this->ReplaceLine(text);
 198                 }
 199
 200                 return 0;
 201         }
 202
 203         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 204         {
 205                 return OnUserPreMessage(user,dest,target_type,text,status,exempt_list);
 206         }
 207
 208         virtual Version GetVersion()
 209         {
 210                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 211         }
 212
 213 };
 214
 215 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 216
 217 class ModuleStripColorFactory : public ModuleFactory
 218 {
 219  public:
 220         ModuleStripColorFactory()
 221         {
 222         }
 223
 224         ~ModuleStripColorFactory()
 225         {
 226         }
 227
 228         virtual Module * CreateModule(InspIRCd* Me)
 229         {
 230                 return new ModuleStripColor(Me);
 231         }
 232
 233 };
 234
 235
 236 extern "C" void * init_module( void )
 237 {
 238         return new ModuleStripColorFactory;
 239 }
 240