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/>.
36 RPL_DCCALLOWSTART = 990,
37 RPL_DCCALLOWLIST = 991,
38 RPL_DCCALLOWEND = 992,
39 RPL_DCCALLOWTIMED = 993,
40 RPL_DCCALLOWPERMANENT = 994,
41 RPL_DCCALLOWREMOVED = 995,
42 ERR_DCCALLOWINVALID = 996,
43 RPL_DCCALLOWEXPIRED = 997,
44 ERR_UNKNOWNDCCALLOWCMD = 998
47 static const char* const helptext[] =
49 "You may allow DCCs from specific users by specifying a",
50 "DCC allow for the user you want to receive DCCs from.",
51 "For example, to allow the user Brain to send you inspircd.exe",
54 "Brain would then be able to send you files. They would have to",
55 "resend the file again if the server gave them an error message",
56 "before you added them to your DCCALLOW list.",
57 "DCCALLOW entries will be temporary by default, if you want to add",
58 "them to your DCCALLOW list until you leave IRC, type:",
60 "To remove the user from your DCCALLOW list, type:",
62 "To see the users in your DCCALLOW list, type:",
64 "NOTE: If the user leaves IRC or changes their nickname",
65 " they will be removed from your DCCALLOW list.",
66 " your DCCALLOW list will be deleted when you leave IRC."
86 DCCAllow(const std::string& nick, const std::string& hm, time_t so, unsigned long ln)
95 typedef std::vector<User *> userlist;
97 typedef std::vector<DCCAllow> dccallowlist;
99 typedef std::vector<BannedFileList> bannedfilelist;
101 typedef SimpleExtItem<dccallowlist> DCCAllowExt;
103 class CommandDccallow : public Command
108 unsigned int maxentries;
109 unsigned long defaultlength;
110 CommandDccallow(Module* parent, DCCAllowExt& Ext)
111 : Command(parent, "DCCALLOW", 0)
114 syntax = "[(+|-)<nick> [<time>]]|[LIST|HELP]";
115 /* XXX we need to fix this so it can work with translation stuff (i.e. move +- into a seperate param */
118 CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
120 /* syntax: DCCALLOW [+|-]<nick> (<time>) */
121 if (!parameters.size())
123 // display current DCCALLOW list
124 DisplayDCCAllowList(user);
127 else if (parameters.size() > 0)
129 char action = *parameters[0].c_str();
131 // if they didn't specify an action, this is probably a command
132 if (action != '+' && action != '-')
134 if (!strcasecmp(parameters[0].c_str(), "LIST"))
136 // list current DCCALLOW list
137 DisplayDCCAllowList(user);
140 else if (!strcasecmp(parameters[0].c_str(), "HELP"))
148 user->WriteNumeric(ERR_UNKNOWNDCCALLOWCMD, "DCCALLOW command not understood. For help on DCCALLOW, type /DCCALLOW HELP");
153 std::string nick(parameters[0], 1);
154 User *target = ServerInstance->FindNickOnly(nick);
156 if ((target) && (!target->quitting) && (target->registered == REG_ALL))
161 // check if it contains any entries
165 for (dccallowlist::iterator i = dl->begin(); i != dl->end(); ++i)
167 // search through list
168 if (i->nickname == target->nick)
171 user->WriteNumeric(RPL_DCCALLOWREMOVED, user->nick, InspIRCd::Format("Removed %s from your DCCALLOW list", target->nick.c_str()));
177 else if (action == '+')
181 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, "You cannot add yourself to your own DCCALLOW list!");
188 dl = new dccallowlist;
190 // add this user to the userlist
194 if (dl->size() >= maxentries)
196 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, "Too many nicks on DCCALLOW list");
200 for (dccallowlist::const_iterator k = dl->begin(); k != dl->end(); ++k)
202 if (k->nickname == target->nick)
204 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, InspIRCd::Format("%s is already on your DCCALLOW list", target->nick.c_str()));
209 std::string mask = target->nick+"!"+target->ident+"@"+target->GetDisplayedHost();
210 unsigned long length;
211 if (parameters.size() < 2)
213 length = defaultlength;
215 else if (!InspIRCd::IsValidDuration(parameters[1]))
217 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, InspIRCd::Format("%s is not a valid DCCALLOW duration", parameters[1].c_str()));
222 length = InspIRCd::Duration(parameters[1]);
225 if (!InspIRCd::IsValidMask(mask))
230 dl->push_back(DCCAllow(target->nick, mask, ServerInstance->Time(), length));
234 user->WriteNumeric(RPL_DCCALLOWTIMED, user->nick, InspIRCd::Format("Added %s to DCCALLOW list for %ld seconds", target->nick.c_str(), length));
238 user->WriteNumeric(RPL_DCCALLOWPERMANENT, user->nick, InspIRCd::Format("Added %s to DCCALLOW list for this session", target->nick.c_str()));
247 // nick doesn't exist
248 user->WriteNumeric(Numerics::NoSuchNick(nick));
255 RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE
257 return ROUTE_BROADCAST;
260 void DisplayHelp(User* user)
262 user->WriteNumeric(RPL_HELPSTART, "*", "DCCALLOW [(+|-)<nick> [<time>]]|[LIST|HELP]");
263 for (size_t i = 0; i < sizeof(helptext)/sizeof(helptext[0]); i++)
264 user->WriteNumeric(RPL_HELPTXT, "*", helptext[i]);
265 user->WriteNumeric(RPL_ENDOFHELP, "*", "End of DCCALLOW HELP");
267 LocalUser* localuser = IS_LOCAL(user);
269 localuser->CommandFloodPenalty += 4000;
272 void DisplayDCCAllowList(User* user)
274 // display current DCCALLOW list
275 user->WriteNumeric(RPL_DCCALLOWSTART, "Users on your DCCALLOW list:");
280 for (dccallowlist::const_iterator c = dl->begin(); c != dl->end(); ++c)
282 user->WriteNumeric(RPL_DCCALLOWLIST, user->nick, InspIRCd::Format("%s (%s)", c->nickname.c_str(), c->hostmask.c_str()));
286 user->WriteNumeric(RPL_DCCALLOWEND, "End of DCCALLOW list");
291 class ModuleDCCAllow : public Module
296 std::string defaultaction;
300 : ext("dccallow", ExtensionItem::EXT_USER, this)
306 void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message) CXX11_OVERRIDE
308 dccallowlist* udl = ext.get(user);
310 // remove their DCCALLOW list if they have one
312 stdalgo::erase(ul, user);
314 // remove them from any DCCALLOW lists
315 // they are currently on
319 void OnUserPostNick(User* user, const std::string &oldnick) CXX11_OVERRIDE
324 ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
327 return MOD_RES_PASSTHRU;
329 if (target.type == MessageTarget::TYPE_USER)
331 User* u = target.Get<User>();
333 /* Always allow a user to dcc themselves (although... why?) */
335 return MOD_RES_PASSTHRU;
337 if ((details.text.length()) && (details.text[0] == '\1'))
341 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :DCC SEND m_dnsbl.cpp 3232235786 52650 9676
342 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :VERSION
344 if (strncmp(details.text.c_str(), "\1DCC ", 5) == 0)
347 if (dl && dl->size())
349 for (dccallowlist::const_iterator iter = dl->begin(); iter != dl->end(); ++iter)
350 if (InspIRCd::Match(user->GetFullHost(), iter->hostmask))
351 return MOD_RES_PASSTHRU;
354 std::string buf = details.text.substr(5);
355 size_t s = buf.find(' ');
356 if (s == std::string::npos)
357 return MOD_RES_PASSTHRU;
359 const std::string type = buf.substr(0, s);
361 if (stdalgo::string::equalsci(type, "SEND"))
365 buf = buf.substr(s + 1);
367 if (!buf.empty() && buf[0] == '"')
369 s = buf.find('"', 1);
371 if (s == std::string::npos || s <= 1)
372 return MOD_RES_PASSTHRU;
383 if (s == std::string::npos)
384 return MOD_RES_PASSTHRU;
386 std::string filename = buf.substr(first, s);
389 for (unsigned int i = 0; i < bfl.size(); i++)
391 if (InspIRCd::Match(filename, bfl[i].filemask, ascii_case_insensitive_map))
393 /* We have a matching badfile entry, override whatever the default action is */
394 if (stdalgo::string::equalsci(bfl[i].action, "allow"))
395 return MOD_RES_PASSTHRU;
404 /* only follow the default action if no badfile matches were found above */
405 if ((!found) && (defaultaction == "allow"))
406 return MOD_RES_PASSTHRU;
408 user->WriteNotice("The user " + u->nick + " is not accepting DCC SENDs from you. Your file " + filename + " was not sent.");
409 u->WriteNotice(user->nick + " (" + user->ident + "@" + user->GetDisplayedHost() + ") attempted to send you a file named " + filename + ", which was blocked.");
410 u->WriteNotice("If you trust " + user->nick + " and were expecting this, you can type /DCCALLOW HELP for information on the DCCALLOW system.");
413 else if ((blockchat) && (stdalgo::string::equalsci(type, "CHAT")))
415 user->WriteNotice("The user " + u->nick + " is not accepting DCC CHAT requests from you.");
416 u->WriteNotice(user->nick + " (" + user->ident + "@" + user->GetDisplayedHost() + ") attempted to initiate a DCC CHAT session, which was blocked.");
417 u->WriteNotice("If you trust " + user->nick + " and were expecting this, you can type /DCCALLOW HELP for information on the DCCALLOW system.");
423 return MOD_RES_PASSTHRU;
428 for (userlist::iterator iter = ul.begin(); iter != ul.end();)
430 User* u = (User*)(*iter);
436 dccallowlist::iterator iter2 = dl->begin();
437 while (iter2 != dl->end())
439 time_t expires = iter2->set_on + iter2->length;
440 if (iter2->length != 0 && expires <= ServerInstance->Time())
442 u->WriteNumeric(RPL_DCCALLOWEXPIRED, u->nick, InspIRCd::Format("DCCALLOW entry for %s has expired", iter2->nickname.c_str()));
443 iter2 = dl->erase(iter2);
455 iter = ul.erase(iter);
460 void RemoveNick(User* user)
462 /* Iterate through all DCCALLOW lists and remove user */
463 for (userlist::iterator iter = ul.begin(); iter != ul.end();)
465 User *u = (User*)(*iter);
471 for (dccallowlist::iterator i = dl->begin(); i != dl->end(); ++i)
473 if (i->nickname == user->nick)
476 u->WriteNotice(i->nickname + " left the network or changed their nickname and has been removed from your DCCALLOW list");
477 u->WriteNumeric(RPL_DCCALLOWREMOVED, u->nick, InspIRCd::Format("Removed %s from your DCCALLOW list", i->nickname.c_str()));
487 iter = ul.erase(iter);
492 void RemoveFromUserlist(User *user)
494 // remove user from userlist
495 for (userlist::iterator j = ul.begin(); j != ul.end(); ++j)
497 User* u = (User*)(*j);
506 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
508 bannedfilelist newbfl;
509 ConfigTagList tags = ServerInstance->Config->ConfTags("banfile");
510 for (ConfigIter i = tags.first; i != tags.second; ++i)
513 bf.filemask = i->second->getString("pattern");
514 bf.action = i->second->getString("action");
515 newbfl.push_back(bf);
519 ConfigTag* tag = ServerInstance->Config->ConfValue("dccallow");
520 cmd.maxentries = tag->getUInt("maxentries", 20);
521 cmd.defaultlength = tag->getDuration("length", 0);
522 blockchat = tag->getBool("blockchat");
523 defaultaction = tag->getString("action");
526 Version GetVersion() CXX11_OVERRIDE
528 return Version("Provides support for the /DCCALLOW command", VF_COMMON | VF_VENDOR);
532 MODULE_INIT(ModuleDCCAllow)