2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2008 John Brooks <john.brooks@dereferenced.net>
6 * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
7 * Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
8 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
9 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
10 * Copyright (C) 2006 Jamie ??? <???@???>
12 * This file is part of InspIRCd. InspIRCd is free software: you can
13 * redistribute it and/or modify it under the terms of the GNU General Public
14 * License as published by the Free Software Foundation, version 2.
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
18 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
28 /* $ModDesc: Provides support for the /DCCALLOW command */
47 DCCAllow(const std::string &nick, const std::string &hm, const time_t so, const long ln) : nickname(nick), hostmask(hm), set_on(so), length(ln) { }
50 typedef std::vector<User *> userlist;
52 typedef std::vector<DCCAllow> dccallowlist;
54 typedef std::vector<BannedFileList> bannedfilelist;
56 SimpleExtItem<dccallowlist>* ext;
58 class CommandDccallow : public Command
61 unsigned int maxentries;
62 CommandDccallow(Module* parent) : Command(parent, "DCCALLOW", 0)
64 syntax = "[(+|-)<nick> [<time>]]|[LIST|HELP]";
65 /* XXX we need to fix this so it can work with translation stuff (i.e. move +- into a seperate param */
68 CmdResult Handle(const std::vector<std::string> ¶meters, User *user)
70 /* syntax: DCCALLOW [+|-]<nick> (<time>) */
71 if (!parameters.size())
73 // display current DCCALLOW list
74 DisplayDCCAllowList(user);
77 else if (parameters.size() > 0)
79 char action = *parameters[0].c_str();
81 // if they didn't specify an action, this is probably a command
82 if (action != '+' && action != '-')
84 if (!strcasecmp(parameters[0].c_str(), "LIST"))
86 // list current DCCALLOW list
87 DisplayDCCAllowList(user);
90 else if (!strcasecmp(parameters[0].c_str(), "HELP"))
98 user->WriteNumeric(998, "%s :DCCALLOW command not understood. For help on DCCALLOW, type /DCCALLOW HELP", user->nick.c_str());
103 std::string nick = parameters[0].substr(1);
104 User *target = ServerInstance->FindNickOnly(nick);
106 if ((target) && (!IS_SERVER(target)) && (!target->quitting) && (target->registered == REG_ALL))
111 // check if it contains any entries
115 for (dccallowlist::iterator i = dl->begin(); i != dl->end(); ++i)
117 // search through list
118 if (i->nickname == target->nick)
121 user->WriteNumeric(995, "%s %s :Removed %s from your DCCALLOW list", user->nick.c_str(), user->nick.c_str(), target->nick.c_str());
127 else if (action == '+')
131 user->WriteNumeric(996, "%s %s :You cannot add yourself to your own DCCALLOW list!", user->nick.c_str(), user->nick.c_str());
138 dl = new dccallowlist;
140 // add this user to the userlist
144 if (dl->size() >= maxentries)
146 user->WriteNumeric(996, "%s %s :Too many nicks on DCCALLOW list", user->nick.c_str(), user->nick.c_str());
150 for (dccallowlist::const_iterator k = dl->begin(); k != dl->end(); ++k)
152 if (k->nickname == target->nick)
154 user->WriteNumeric(996, "%s %s :%s is already on your DCCALLOW list", user->nick.c_str(), user->nick.c_str(), target->nick.c_str());
159 std::string mask = target->nick+"!"+target->ident+"@"+target->dhost;
160 std::string default_length = ServerInstance->Config->ConfValue("dccallow")->getString("length");
163 if (parameters.size() < 2)
165 length = ServerInstance->Duration(default_length);
167 else if (!atoi(parameters[1].c_str()))
173 length = ServerInstance->Duration(parameters[1]);
176 if (!ServerInstance->IsValidMask(mask))
181 dl->push_back(DCCAllow(target->nick, mask, ServerInstance->Time(), length));
185 user->WriteNumeric(993, "%s %s :Added %s to DCCALLOW list for %ld seconds", user->nick.c_str(), user->nick.c_str(), target->nick.c_str(), length);
189 user->WriteNumeric(994, "%s %s :Added %s to DCCALLOW list for this session", user->nick.c_str(), user->nick.c_str(), target->nick.c_str());
198 // nick doesn't exist
199 user->WriteNumeric(401, "%s %s :No such nick/channel", user->nick.c_str(), nick.c_str());
206 RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
208 return ROUTE_BROADCAST;
211 void DisplayHelp(User* user)
213 user->WriteNumeric(998, "%s :DCCALLOW [(+|-)<nick> [<time>]]|[LIST|HELP]", user->nick.c_str());
214 user->WriteNumeric(998, "%s :You may allow DCCs from specific users by specifying a", user->nick.c_str());
215 user->WriteNumeric(998, "%s :DCC allow for the user you want to receive DCCs from.", user->nick.c_str());
216 user->WriteNumeric(998, "%s :For example, to allow the user Brain to send you inspircd.exe", user->nick.c_str());
217 user->WriteNumeric(998, "%s :you would type:", user->nick.c_str());
218 user->WriteNumeric(998, "%s :/DCCALLOW +Brain", user->nick.c_str());
219 user->WriteNumeric(998, "%s :Brain would then be able to send you files. They would have to", user->nick.c_str());
220 user->WriteNumeric(998, "%s :resend the file again if the server gave them an error message", user->nick.c_str());
221 user->WriteNumeric(998, "%s :before you added them to your DCCALLOW list.", user->nick.c_str());
222 user->WriteNumeric(998, "%s :DCCALLOW entries will be temporary by default, if you want to add", user->nick.c_str());
223 user->WriteNumeric(998, "%s :them to your DCCALLOW list until you leave IRC, type:", user->nick.c_str());
224 user->WriteNumeric(998, "%s :/DCCALLOW +Brain 0", user->nick.c_str());
225 user->WriteNumeric(998, "%s :To remove the user from your DCCALLOW list, type:", user->nick.c_str());
226 user->WriteNumeric(998, "%s :/DCCALLOW -Brain", user->nick.c_str());
227 user->WriteNumeric(998, "%s :To see the users in your DCCALLOW list, type:", user->nick.c_str());
228 user->WriteNumeric(998, "%s :/DCCALLOW LIST", user->nick.c_str());
229 user->WriteNumeric(998, "%s :NOTE: If the user leaves IRC or changes their nickname", user->nick.c_str());
230 user->WriteNumeric(998, "%s : they will be removed from your DCCALLOW list.", user->nick.c_str());
231 user->WriteNumeric(998, "%s : your DCCALLOW list will be deleted when you leave IRC.", user->nick.c_str());
232 user->WriteNumeric(999, "%s :End of DCCALLOW HELP", user->nick.c_str());
234 LocalUser* localuser = IS_LOCAL(user);
236 localuser->CommandFloodPenalty += 4000;
239 void DisplayDCCAllowList(User* user)
241 // display current DCCALLOW list
242 user->WriteNumeric(990, "%s :Users on your DCCALLOW list:", user->nick.c_str());
247 for (dccallowlist::const_iterator c = dl->begin(); c != dl->end(); ++c)
249 user->WriteNumeric(991, "%s %s :%s (%s)", user->nick.c_str(), user->nick.c_str(), c->nickname.c_str(), c->hostmask.c_str());
253 user->WriteNumeric(992, "%s :End of DCCALLOW list", user->nick.c_str());
258 class ModuleDCCAllow : public Module
271 ext = new SimpleExtItem<dccallowlist>("dccallow", this);
272 ServerInstance->Modules->AddService(*ext);
273 ServerInstance->Modules->AddService(cmd);
275 Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnUserQuit, I_OnUserPostNick, I_OnRehash };
276 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
279 virtual void OnRehash(User* user)
282 ConfigTag* tag = ServerInstance->Config->ConfValue("dccallow");
283 cmd.maxentries = tag->getInt("maxentries", 20);
286 virtual void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
288 dccallowlist* udl = ext->get(user);
290 // remove their DCCALLOW list if they have one
293 userlist::iterator it = std::find(ul.begin(), ul.end(), user);
298 // remove them from any DCCALLOW lists
299 // they are currently on
303 virtual void OnUserPostNick(User* user, const std::string &oldnick)
308 virtual ModResult OnUserPreMessage(User* user, void* dest, int target_type, std::string &text, char status, CUList &exempt_list)
310 return OnUserPreNotice(user, dest, target_type, text, status, exempt_list);
313 virtual ModResult OnUserPreNotice(User* user, void* dest, int target_type, std::string &text, char status, CUList &exempt_list)
316 return MOD_RES_PASSTHRU;
318 if (target_type == TYPE_USER)
320 User* u = (User*)dest;
322 /* Always allow a user to dcc themselves (although... why?) */
324 return MOD_RES_PASSTHRU;
326 if ((text.length()) && (text[0] == '\1'))
330 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :DCC SEND m_dnsbl.cpp 3232235786 52650 9676
331 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :VERSION
333 if (strncmp(text.c_str(), "\1DCC ", 5) == 0)
336 if (dl && dl->size())
338 for (dccallowlist::const_iterator iter = dl->begin(); iter != dl->end(); ++iter)
339 if (InspIRCd::Match(user->GetFullHost(), iter->hostmask))
340 return MOD_RES_PASSTHRU;
343 std::string buf = text.substr(5);
344 size_t s = buf.find(' ');
345 if (s == std::string::npos)
346 return MOD_RES_PASSTHRU;
348 irc::string type = assign(buf.substr(0, s));
350 ConfigTag* conftag = ServerInstance->Config->ConfValue("dccallow");
351 bool blockchat = conftag->getBool("blockchat");
357 buf = buf.substr(s + 1);
359 if (!buf.empty() && buf[0] == '"')
361 s = buf.find('"', 1);
363 if (s == std::string::npos || s <= 1)
364 return MOD_RES_PASSTHRU;
375 if (s == std::string::npos)
376 return MOD_RES_PASSTHRU;
378 std::string defaultaction = conftag->getString("action");
379 std::string filename = buf.substr(first, s);
382 for (unsigned int i = 0; i < bfl.size(); i++)
384 if (InspIRCd::Match(filename, bfl[i].filemask, ascii_case_insensitive_map))
386 /* We have a matching badfile entry, override whatever the default action is */
387 if (bfl[i].action == "allow")
388 return MOD_RES_PASSTHRU;
397 /* only follow the default action if no badfile matches were found above */
398 if ((!found) && (defaultaction == "allow"))
399 return MOD_RES_PASSTHRU;
401 user->WriteServ("NOTICE %s :The user %s is not accepting DCC SENDs from you. Your file %s was not sent.", user->nick.c_str(), u->nick.c_str(), filename.c_str());
402 u->WriteServ("NOTICE %s :%s (%s@%s) attempted to send you a file named %s, which was blocked.", u->nick.c_str(), user->nick.c_str(), user->ident.c_str(), user->dhost.c_str(), filename.c_str());
403 u->WriteServ("NOTICE %s :If you trust %s and were expecting this, you can type /DCCALLOW HELP for information on the DCCALLOW system.", u->nick.c_str(), user->nick.c_str());
406 else if ((type == "CHAT") && (blockchat))
408 user->WriteServ("NOTICE %s :The user %s is not accepting DCC CHAT requests from you.", user->nick.c_str(), u->nick.c_str());
409 u->WriteServ("NOTICE %s :%s (%s@%s) attempted to initiate a DCC CHAT session, which was blocked.", u->nick.c_str(), user->nick.c_str(), user->ident.c_str(), user->dhost.c_str());
410 u->WriteServ("NOTICE %s :If you trust %s and were expecting this, you can type /DCCALLOW HELP for information on the DCCALLOW system.", u->nick.c_str(), user->nick.c_str());
416 return MOD_RES_PASSTHRU;
421 for (userlist::iterator iter = ul.begin(); iter != ul.end();)
423 User* u = (User*)(*iter);
429 dccallowlist::iterator iter2 = dl->begin();
430 while (iter2 != dl->end())
432 if (iter2->length != 0 && (iter2->set_on + iter2->length) <= ServerInstance->Time())
434 u->WriteNumeric(997, "%s %s :DCCALLOW entry for %s has expired", u->nick.c_str(), u->nick.c_str(), iter2->nickname.c_str());
435 iter2 = dl->erase(iter2);
447 iter = ul.erase(iter);
452 void RemoveNick(User* user)
454 /* Iterate through all DCCALLOW lists and remove user */
455 for (userlist::iterator iter = ul.begin(); iter != ul.end();)
457 User *u = (User*)(*iter);
463 for (dccallowlist::iterator i = dl->begin(); i != dl->end(); ++i)
465 if (i->nickname == user->nick)
468 u->WriteServ("NOTICE %s :%s left the network or changed their nickname and has been removed from your DCCALLOW list", u->nick.c_str(), i->nickname.c_str());
469 u->WriteNumeric(995, "%s %s :Removed %s from your DCCALLOW list", u->nick.c_str(), u->nick.c_str(), i->nickname.c_str());
479 iter = ul.erase(iter);
484 void RemoveFromUserlist(User *user)
486 // remove user from userlist
487 for (userlist::iterator j = ul.begin(); j != ul.end(); ++j)
489 User* u = (User*)(*j);
501 ConfigTagList tags = ServerInstance->Config->ConfTags("banfile");
502 for (ConfigIter i = tags.first; i != tags.second; ++i)
505 bf.filemask = i->second->getString("pattern");
506 bf.action = i->second->getString("action");
511 virtual ~ModuleDCCAllow()
516 virtual Version GetVersion()
518 return Version("Provides support for the /DCCALLOW command", VF_COMMON | VF_VENDOR);
522 MODULE_INIT(ModuleDCCAllow)