src/modules/m_shun.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/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 "xline.h"
  16
  17 /* $ModDesc: Provides the /shun command, which stops a user executing all commands except PING and PONG. */
  18
  19 class Shun : public XLine
  20 {
  21 public:
  22         std::string matchtext;
  23
  24         Shun(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char *shunmask) : XLine(Instance, s_time, d, src, re, "SHUN")
  25         {
  26                 this->matchtext = shunmask;
  27         }
  28
  29         ~Shun()
  30         {
  31         }
  32
  33         bool Matches(User *u)
  34         {
  35                 if (InspIRCd::Match(u->GetFullHost(), matchtext) || InspIRCd::Match(u->GetFullRealHost(), matchtext))
  36                         return true;
  37
  38                 return false;
  39         }
  40
  41         bool Matches(const std::string &s)
  42         {
  43                 if (matchtext == s)
  44                         return true;
  45                 return false;
  46         }
  47
  48         void Apply(User *u)
  49         {
  50                 if (!u->GetExt("shunned"))
  51                         u->Extend("shunned");
  52         }
  53
  54
  55         void DisplayExpiry()
  56         {
  57                 ServerInstance->SNO->WriteToSnoMask('x',"Removing expired shun %s (set by %s %ld seconds ago)", this->matchtext.c_str(), this->source, (long int)(ServerInstance->Time() - this->set_time));
  58         }
  59
  60         const char* Displayable()
  61         {
  62                 return matchtext.c_str();
  63         }
  64 };
  65
  66 /** An XLineFactory specialized to generate shun pointers
  67  */
  68 class ShunFactory : public XLineFactory
  69 {
  70  public:
  71         ShunFactory(InspIRCd* Instance) : XLineFactory(Instance, "SHUN") { }
  72
  73         /** Generate a shun
  74         */
  75         XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask)
  76         {
  77                 return new Shun(ServerInstance, set_time, duration, source, reason, xline_specific_mask);
  78         }
  79 };
  80
  81 //typedef std::vector<Shun> shunlist;
  82
  83 class CommandShun : public Command
  84 {
  85  private:
  86         InspIRCd *Srv;
  87
  88  public:
  89         CommandShun(InspIRCd* Me) : Command(Me, "SHUN", "o", 1, 3), Srv(Me)
  90         {
  91                 this->source = "m_shun.so";
  92                 this->syntax = "<nick!user@hostmask> [<shun-duration>] :<reason>";
  93         }
  94
  95         CmdResult Handle(const std::vector<std::string>& parameters, User *user)
  96         {
  97                 /* syntax: SHUN nick!user@host time :reason goes here */
  98                 /* 'time' is a human-readable timestring, like 2d3h2s. */
  99
 100                 if (parameters.size() == 1)
 101                 {
 102                         if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "SHUN", user))
 103                         {
 104                                 ServerInstance->SNO->WriteToSnoMask('x',"%s Removed shun on %s.",user->nick.c_str(),parameters[0].c_str());
 105                         }
 106                         else
 107                         {
 108                                 // XXX todo implement stats
 109                                 user->WriteServ("NOTICE %s :*** Shun %s not found in list, try /stats S.",user->nick.c_str(),parameters[0].c_str());
 110                         }
 111
 112                         return CMD_SUCCESS;
 113                 }
 114                 else if (parameters.size() >= 2)
 115                 {
 116                         // Adding - XXX todo make this respect <insane> tag perhaps..
 117                         long duration;
 118                         std::string expr;
 119                         if (parameters.size() > 2)
 120                         {
 121                                 duration = ServerInstance->Duration(parameters[1]);
 122                                 expr = parameters[2];
 123                         }
 124                         else
 125                         {
 126                                 duration = 0;
 127                                 expr = parameters[1];
 128                         }
 129                         Shun *r = NULL;
 130
 131                         try
 132                         {
 133                                 r = new Shun(ServerInstance, ServerInstance->Time(), duration, user->nick.c_str(), expr.c_str(), parameters[0].c_str());
 134                         }
 135                         catch (...)
 136                         {
 137                                 ; // Do nothing. If we get here, the regex was fucked up, and they already got told it fucked up.
 138                         }
 139
 140                         if (r)
 141                         {
 142                                 if (ServerInstance->XLines->AddLine(r, user))
 143                                 {
 144                                         if (!duration)
 145                                         {
 146                                                 ServerInstance->SNO->WriteToSnoMask('x',"%s added permanent shun for %s: %s",
 147                                                         user->nick.c_str(), parameters[0].c_str(), expr.c_str());
 148                                         }
 149                                         else
 150                                         {
 151                                                 time_t c_requires_crap = duration + ServerInstance->Time();
 152                                                 ServerInstance->SNO->WriteToSnoMask('x', "%s added timed shun for %s, expires on %s: %s",
 153                                                         user->nick.c_str(), parameters[0].c_str(), ServerInstance->TimeString(c_requires_crap).c_str(), expr.c_str());
 154                                         }
 155
 156                                         ServerInstance->XLines->ApplyLines();
 157                                 }
 158                                 else
 159                                 {
 160                                         delete r;
 161                                         user->WriteServ("NOTICE %s :*** Shun for %s already exists", user->nick.c_str(), expr.c_str());
 162                                 }
 163                         }
 164                 }
 165
 166                 return CMD_FAILURE;
 167         }
 168 };
 169
 170 class ModuleShun : public Module
 171 {
 172         CommandShun* mycommand;
 173         ShunFactory *f;
 174         std::set<std::string> ShunEnabledCommands;
 175         bool NotifyOfShun;
 176         bool affectopers;
 177
 178  public:
 179         ModuleShun(InspIRCd* Me) : Module(Me)
 180         {
 181                 f = new ShunFactory(ServerInstance);
 182                 ServerInstance->XLines->RegisterFactory(f);
 183
 184                 mycommand = new CommandShun(ServerInstance);
 185                 ServerInstance->AddCommand(mycommand);
 186
 187                 Implementation eventlist[] = { I_OnStats, I_OnPreCommand, I_OnUserConnect, I_OnRehash };
 188                 ServerInstance->Modules->Attach(eventlist, this, 4);
 189                 OnRehash(NULL, "");
 190         }
 191
 192         virtual ~ModuleShun()
 193         {
 194                 ServerInstance->XLines->DelAll("SHUN");
 195                 ServerInstance->XLines->UnregisterFactory(f);
 196         }
 197
 198         virtual int OnStats(char symbol, User* user, string_list& out)
 199         {
 200                 if (symbol != 'S')
 201                         return 0;
 202
 203                 ServerInstance->XLines->InvokeStats("SHUN", 223, user, out);
 204                 return 1;
 205         }
 206
 207         virtual void OnRehash(User* user, const std::string &parameter)
 208         {
 209                 ConfigReader MyConf(ServerInstance);
 210                 std::string cmds = MyConf.ReadValue("shun", "enabledcommands", 0);
 211
 212                 if (cmds.empty())
 213                         cmds = "PING PONG QUIT";
 214
 215                 ShunEnabledCommands.clear();
 216                 NotifyOfShun = true;
 217                 affectopers = false;
 218
 219                 std::stringstream dcmds(cmds);
 220                 std::string thiscmd;
 221
 222                 while (dcmds >> thiscmd)
 223                 {
 224                         ShunEnabledCommands.insert(thiscmd);
 225                 }
 226
 227                 NotifyOfShun = MyConf.ReadFlag("shun", "notifyuser", "yes", 0);
 228                 affectopers = MyConf.ReadFlag("shun", "affectopers", "no", 0);
 229         }
 230
 231         virtual void OnUserConnect(User* user)
 232         {
 233                 if (!IS_LOCAL(user))
 234                         return;
 235
 236                 // Apply lines on user connect
 237                 XLine *rl = ServerInstance->XLines->MatchesLine("SHUN", user);
 238
 239                 if (rl)
 240                 {
 241                         // Bang. :P
 242                         rl->Apply(user);
 243                 }
 244         }
 245
 246         virtual int OnPreCommand(std::string &command, std::vector<std::string>& parameters, User* user, bool validated, const std::string &original_line)
 247         {
 248                 if (validated || !user->GetExt("shunned"))
 249                         return 0;
 250
 251                 if (!ServerInstance->XLines->MatchesLine("SHUN", user))
 252                 {
 253                         /* The shun previously set on this user has expired or been removed */
 254                         user->Shrink("shunned");
 255                         return 0;
 256                 }
 257
 258                 if (!affectopers && IS_OPER(user))
 259                 {
 260                         /* Don't do anything if the user is an operator and affectopers isn't set */
 261                         return 0;
 262                 }
 263
 264                 std::set<std::string>::iterator i = ShunEnabledCommands.find(command);
 265
 266                 if (i == ShunEnabledCommands.end())
 267                 {
 268                         if (NotifyOfShun)
 269                                 user->WriteServ("NOTICE %s :*** Command %s not processed, as you have been blocked from issuing commands (SHUN)", user->nick.c_str(), command.c_str());
 270                         return 1;
 271                 }
 272
 273                 if (command == "QUIT")
 274                 {
 275                         /* Allow QUIT but dont show any quit message */
 276                         parameters.clear();
 277                 }
 278                 else if (command == "PART")
 279                 {
 280                         /* same for PART */
 281                         parameters.clear();
 282                 }
 283
 284                 /* if we're here, allow the command. */
 285                 return 0;
 286         }
 287
 288         virtual Version GetVersion()
 289         {
 290                 return Version("$Id$",VF_VENDOR|VF_COMMON,API_VERSION);
 291         }
 292 };
 293
 294 MODULE_INIT(ModuleShun)
 295