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 "inspircd.h"
  15 #include "users.h"
  16 #include "channels.h"
  17 #include "modules.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)
  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(Me)
  94         {
  95                 usc = new UserStripColor(ServerInstance);
  96                 csc = new ChannelStripColor(ServerInstance);
  97
  98                 if (!ServerInstance->AddMode(usc, 'S') || !ServerInstance->AddMode(csc, 'S'))
  99                         throw ModuleException("Could not add new modes!");
 100         }
 101
 102         void Implements(char* List)
 103         {
 104                 List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = 1;
 105         }
 106
 107         virtual ~ModuleStripColor()
 108         {
 109                 ServerInstance->Modes->DelMode(usc);
 110                 ServerInstance->Modes->DelMode(csc);
 111                 DELETE(usc);
 112                 DELETE(csc);
 113         }
 114
 115         // ANSI colour stripping based on C example by Doc (Peter Wood)
 116         virtual void ReplaceLine(std::string &sentence)
 117         {
 118                 int i, a, len, remove;
 119                 len = sentence.length();
 120
 121                 for (i = 0; i < len; i++)
 122                 {
 123                         remove = 0;
 124
 125                         switch (sentence[i])
 126                         {
 127                                 case 2:
 128                                 case 15:
 129                                 case 22:
 130                                 case 21:
 131                                 case 31:
 132                                         remove++;
 133                                 break;
 134
 135                                 case 3:
 136                                         remove = 1;
 137
 138                                         if (isdigit(sentence[i + remove]))
 139                                                 remove++;
 140
 141                                         if (isdigit(sentence[i + remove]))
 142                                                 remove++;
 143
 144                                         if (sentence[i + remove] == ',')
 145                                         {
 146                                                 remove += 2;
 147
 148                                                 if (isdigit(sentence[i + remove]))
 149                                                         remove++;
 150                                         }
 151                                 break;
 152                         }
 153
 154                         if (remove != 0)
 155                         {
 156                                 len -= remove;
 157
 158                                 for (a = i; a <= len; a++)
 159                                         sentence[a] = sentence[a + remove];
 160                                 i--;
 161                         }
 162                 }
 163         }
 164
 165         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 166         {
 167                 if (!IS_LOCAL(user))
 168                         return 0;
 169
 170                 bool active = false;
 171                 if (target_type == TYPE_USER)
 172                 {
 173                         userrec* t = (userrec*)dest;
 174                         active = t->IsModeSet('S');
 175                 }
 176                 else if (target_type == TYPE_CHANNEL)
 177                 {
 178                         chanrec* t = (chanrec*)dest;
 179
 180                         // check if we allow ops to bypass filtering, if we do, check if they're opped accordingly.
 181                         // note: short circut logic here, don't wreck it. -- w00t
 182                         if (!CHANOPS_EXEMPT(ServerInstance, 'S') || CHANOPS_EXEMPT(ServerInstance, 'S') && t->GetStatus(user) != STATUS_OP)
 183                                 active = t->IsModeSet('S');
 184                 }
 185
 186                 if (active)
 187                 {
 188                         this->ReplaceLine(text);
 189                 }
 190
 191                 return 0;
 192         }
 193
 194         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 195         {
 196                 return OnUserPreMessage(user,dest,target_type,text,status,exempt_list);
 197         }
 198
 199         virtual Version GetVersion()
 200         {
 201                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 202         }
 203
 204 };
 205
 206 MODULE_INIT(ModuleStripColor);