include/u_listmode.h

   1 #ifndef INSPIRCD_LISTMODE_PROVIDER
   2 #define INSPIRCD_LISTMODE_PROVIDER
   3
   4 #include <stdio.h>
   5 #include <string>
   6 #include <sstream>
   7 #include <vector>
   8 #include "users.h"
   9 #include "channels.h"
  10 #include "modules.h"
  11 #include "helperfuncs.h"
  12
  13 /* $ModDesc: Provides support for easily creating listmodes, stores the time set, the user, and a parameter. */
  14
  15 /* Updated to use the <banlist> config tag if it exists */
  16 /* Written by Om <omster@gmail.com>, December 2005. */
  17 /* Based on code previously written by Om - April 2005 */
  18 /* Updated to new API July 8th 2006 by Brain */
  19 /* Originally based on m_chanprotect and m_silence */
  20
  21 inline std::string stringtime()
  22 {
  23         std::ostringstream TIME;
  24         TIME << time(NULL);
  25         return TIME.str();
  26 }
  27
  28 class ListItem
  29 {
  30 public:
  31         std::string nick;
  32         std::string mask;
  33         std::string time;
  34 };
  35
  36 class ListLimit
  37 {
  38 public:
  39         std::string mask;
  40         unsigned int limit;
  41 };
  42
  43 // Just defining the type we use for the exception list here...
  44 typedef std::vector<ListItem> modelist;
  45 typedef std::vector<ListLimit> limitlist;
  46
  47 class ListModeBase : public ModeHandler
  48 {
  49  protected:
  50         std::string infokey;
  51         std::string listnumeric;
  52         std::string endoflistnumeric;
  53         std::string endofliststring;
  54         limitlist chanlimits;
  55
  56         Server* Srv;
  57         ConfigReader* Conf;
  58  public:
  59         ListModeBase(Server* serv, char modechar, const std::string &eolstr, const std::string &lnum, const std::string &eolnum) : ModeHandler(modechar, 1, 1, true, MODETYPE_CHANNEL, false)
  60         {
  61                 Srv = serv;
  62                 Conf = new ConfigReader;
  63                 mode = modechar;
  64                 listnumeric = lnum;
  65                 endoflistnumeric = eolnum;
  66                 endofliststring = eolstr;
  67                 this->DoRehash();
  68                 infokey = "exceptionbase_mode_" + std::string(1, mode) + "_list";
  69         }
  70
  71         virtual void DisplayList(userrec* user, chanrec* channel)
  72         {
  73                 modelist* el = (modelist*)channel->GetExt(infokey);
  74                 if (el)
  75                 {
  76                         for(modelist::iterator it = el->begin(); it != el->end(); it++)
  77                         {
  78                                 WriteServ(user->fd, "%s %s %s %s %s %s", listnumeric.c_str(), user->nick, channel->name, it->mask.c_str(), it->nick.c_str(), it->time.c_str());
  79                         }
  80                 }
  81                 WriteServ(user->fd, "%s %s %s %s", endoflistnumeric.c_str(), user->nick, channel->name, endofliststring.c_str());
  82         }
  83
  84         virtual void DoRehash()
  85         {
  86                 delete Conf;
  87                 Conf = new ConfigReader;
  88
  89                 chanlimits.clear();
  90
  91                 for(int i = 0; i < Conf->Enumerate("banlist"); i++)
  92                 {
  93                         // For each <banlist> tag
  94                         ListLimit limit;
  95                         limit.mask = Conf->ReadValue("banlist", "chan", i);
  96                         limit.limit = Conf->ReadInteger("banlist", "limit", i, true);
  97
  98                         if(limit.mask.size() && limit.limit > 0)
  99                         {
 100                                 chanlimits.push_back(limit);
 101                                 log(DEBUG, "m_exceptionbase.so: Read channel listmode limit of %u for mask '%s'", limit.limit, limit.mask.c_str());
 102                         }
 103                         else
 104                         {
 105                                 log(DEBUG, "m_exceptionbase.so: Invalid tag");
 106                         }
 107                 }
 108                 if(chanlimits.size() == 0)
 109                 {
 110                         ListLimit limit;
 111                         limit.mask = "*";
 112                         limit.limit = 64;
 113                         chanlimits.push_back(limit);
 114                 }
 115         }
 116
 117         virtual void DoImplements(char* List)
 118         {
 119                 List[I_OnChannelDelete] = List[I_OnSyncChannel] = List[I_OnCleanup] = List[I_OnRehash] = 1;
 120         }
 121
 122         virtual ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
 123         {
 124                 // Try and grab the list
 125                 modelist* el = (modelist*)channel->GetExt(infokey);
 126
 127                 if (adding)
 128                 {
 129                         // If there was no list
 130                         if (!el)
 131                         {
 132                                 // Make one
 133                                 el = new modelist;
 134                                 channel->Extend(infokey, (char*)el);
 135                         }
 136
 137                         // Clean the mask up
 138                         ModeParser::CleanMask(parameter);
 139
 140                         // Check if the item already exists in the list
 141                         for (modelist::iterator it = el->begin(); it != el->end(); it++)
 142                         {
 143                                 if(parameter == it->mask)
 144                                 {
 145                                         // it does, deny the change
 146                                         parameter = "";
 147                                         return MODEACTION_DENY;
 148                                 }
 149                         }
 150
 151                         unsigned int maxsize = 0;
 152
 153                         for (limitlist::iterator it = chanlimits.begin(); it != chanlimits.end(); it++)
 154                         {
 155                                 if (Srv->MatchText(channel->name, it->mask))
 156                                 {
 157                                         // We have a pattern matching the channel...
 158                                         maxsize = el->size();
 159                                         if (maxsize < it->limit)
 160                                         {
 161                                                 // And now add the mask onto the list...
 162                                                 ListItem e;
 163                                                 e.mask = parameter;
 164                                                 e.nick = source->nick;
 165                                                 e.time = stringtime();
 166
 167                                                 el->push_back(e);
 168                                                 return MODEACTION_ALLOW;
 169                                         }
 170                                 }
 171                         }
 172
 173                         // List is full
 174                         WriteServ(source->fd, "478 %s %s %s :Channel ban/ignore list is full", source->nick, channel->name, parameter.c_str());
 175                         parameter = "";
 176                         return MODEACTION_DENY;
 177                 }
 178                 else
 179                 {
 180                         // We're taking the mode off
 181                         if (el)
 182                         {
 183                                 for (modelist::iterator it = el->begin(); it != el->end(); it++)
 184                                 {
 185                                         if(parameter == it->mask)
 186                                         {
 187                                                 el->erase(it);
 188                                                 if(el->size() == 0)
 189                                                 {
 190                                                         channel->Shrink(infokey);
 191                                                         delete el;
 192                                                 }
 193                                                 return MODEACTION_ALLOW;
 194                                         }
 195                                 }
 196                                 parameter = "";
 197                                 return MODEACTION_DENY;
 198                         }
 199                         else
 200                         {
 201                                 // Hmm, taking an exception off a non-existant list, DIE
 202                                 parameter = "";
 203                                 return MODEACTION_DENY;
 204                         }
 205                 }
 206                 return MODEACTION_DENY;
 207         }
 208
 209         virtual std::string& GetInfoKey()
 210         {
 211                 return infokey;
 212         }
 213
 214         virtual void DoChannelDelete(chanrec* chan)
 215         {
 216                 modelist* list = (modelist*)chan->GetExt(infokey);
 217
 218                 if (list)
 219                 {
 220                         chan->Shrink(infokey);
 221                         delete list;
 222                 }
 223         }
 224
 225         virtual void DoSyncChannel(chanrec* chan, Module* proto, void* opaque)
 226         {
 227                 modelist* list = (modelist*)chan->GetExt(infokey);
 228                 if (list)
 229                 {
 230                         for (modelist::iterator it = list->begin(); it != list->end(); it++)
 231                         {
 232                                 proto->ProtoSendMode(opaque, TYPE_CHANNEL, chan, "+" + std::string(1, mode) + " " + it->mask);
 233                         }
 234                 }
 235         }
 236
 237         virtual void DoCleanup(int target_type, void* item)
 238         {
 239                 if (target_type == TYPE_CHANNEL)
 240                 {
 241                         chanrec* chan = (chanrec*)item;
 242
 243                         modelist* list = (modelist*)chan->GetExt(infokey);
 244
 245                         if (list)
 246                         {
 247                                 chan->Shrink(infokey);
 248                                 delete list;
 249                         }
 250                 }
 251         }
 252 };
 253
 254 #endif