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| -rw-r--r-- | src/modules/m_blockamsg.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/modules/m_blockamsg.cpp b/src/modules/m_blockamsg.cpp new file mode 100644 index 000000000..a0ec7b584 --- /dev/null +++ b/src/modules/m_blockamsg.cpp @@ -0,0 +1,202 @@ +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. + * E-mail: + * <brain@chatspike.net> + * <Craig@chatspike.net> + * <omster@gmail.com> + * + * Written by Craig Edwards, Craig McLure, and others. + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +#include <string> +#include <time.h> +#include "inspircd_config.h" +#include "users.h" +#include "channels.h" +#include "modules.h" +#include "helperfuncs.h" +#include "hashcomp.h" + +/* $ModDesc: Attempt to block /amsg, at least some of the irritating mIRC scripts. */ + +extern time_t TIME; + +enum BlockAction { IBLOCK_KILL, IBLOCK_KILLOPERS, IBLOCK_NOTICE, IBLOCK_NOTICEOPERS, IBLOCK_SILENT }; + +class BlockedMessage +{ +public: + std::string message; + irc::string target; + time_t sent; + + BlockedMessage(std::string msg, irc::string tgt, time_t when) : message(msg), target(tgt), sent(when) + { + } +}; + +class ModuleBlockAmsg : public Module +{ + Server* Srv; + int ForgetDelay; + BlockAction action; +public: + ModuleBlockAmsg(Server* Me) : Module::Module(Me) + { + Srv = Me; + this->OnRehash(""); + } + + void Implements(char* List) + { + List[I_OnRehash] = List[I_OnPreCommand] = List[I_OnCleanup] = 1; + } + + virtual ~ModuleBlockAmsg() + { + } + + virtual Version GetVersion() + { + return Version(1,0,0,0,VF_VENDOR); + } + + virtual void OnRehash(std::string parameter) + { + ConfigReader* Conf = new ConfigReader; + + ForgetDelay = Conf->ReadInteger("blockamsg", "delay", 0, false); + if(Conf->GetError() == CONF_VALUE_NOT_FOUND) + ForgetDelay = -1; + + std::string act = Conf->ReadValue("blockamsg", "action", 0); + + if(act == "notice") + action = IBLOCK_NOTICE; + else if(act == "noticeopers") + action = IBLOCK_NOTICEOPERS; + else if(act == "silent") + action = IBLOCK_SILENT; + else if(act == "kill") + action = IBLOCK_KILL; + else + action = IBLOCK_KILLOPERS; + + delete Conf; + } + + virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user, bool validated) + { + // Don't do anything with unregistered users, or remote ones. + if(!user || (user->registered != 7) || !IS_LOCAL(user)) + return 0; + + // We want case insensitive command comparison. + // Add std::string contructor for irc::string :x + irc::string cmd = command.c_str(); + + if(validated && (cmd == "PRIVMSG" || cmd == "NOTICE") && (pcnt >= 2)) + { + // parameters[0] should have the target(s) in it. + // I think it will be faster to first check if there are any commas, and if there are then try and parse it out. + // Most messages have a single target so... + + int targets = 1; + int userchans = 0; + + // Decrement if the first target wasn't a channel. + if(*parameters[0] != '#') + targets--; + + for(char* c = parameters[0]; *c; c++) + if((*c == ',') && *(c+1) && (*(c+1) == '#')) + targets++; + + for(unsigned int i = 0; i < user->chans.size(); i++) + if(user->chans[i].channel) + userchans++; + + // Check that this message wasn't already sent within a few seconds. + BlockedMessage* m = (BlockedMessage*)user->GetExt("amsgblock"); + + // If the message is identical and within the time. + // We check the target is *not* identical, that'd straying into the realms of flood control. Which isn't what we're doing... + // OR + // The number of target channels is equal to the number of channels the sender is on..a little suspicious. + // Check it's more than 1 too, or else users on one channel would have fun. + if((m && (m->message == parameters[1]) && (m->target != parameters[0]) && (ForgetDelay != -1) && (m->sent >= TIME-ForgetDelay)) || ((targets > 1) && (targets == userchans))) + { + // Block it... + if(action == IBLOCK_KILLOPERS || action == IBLOCK_NOTICEOPERS) + WriteOpers("*** %s had an /amsg or /ame denied", user->nick); + + if(action == IBLOCK_KILL || action == IBLOCK_KILLOPERS) + Srv->QuitUser(user, "Global message (/amsg or /ame) detected"); + else if(action == IBLOCK_NOTICE || action == IBLOCK_NOTICEOPERS) + WriteServ(user->fd, "NOTICE %s :Global message (/amsg or /ame) detected", user->nick); + + return 1; + } + + if(m) + { + // If there's already a BlockedMessage allocated, use it. + m->message = parameters[1]; + m->target = parameters[0]; + m->sent = TIME; + } + else + { + m = new BlockedMessage(parameters[1], parameters[0], TIME); + user->Extend("amsgblock", (char*)m); + } + } + return 0; + } + + void OnCleanup(int target_type, void* item) + { + if(target_type == TYPE_USER) + { + userrec* user = (userrec*)item; + BlockedMessage* m = (BlockedMessage*)user->GetExt("amsgblock"); + if(m) + { + delete m; + user->Shrink("amsgblock"); + } + } + } +}; + + +class ModuleBlockAmsgFactory : public ModuleFactory +{ + public: + ModuleBlockAmsgFactory() + { + } + + ~ModuleBlockAmsgFactory() + { + } + + virtual Module * CreateModule(Server* Me) + { + return new ModuleBlockAmsg(Me); + } +}; + + +extern "C" void * init_module( void ) +{ + return new ModuleBlockAmsgFactory; +} + |