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 CommandDccallow(Module* parent, DCCAllowExt& Ext)
110 : Command(parent, "DCCALLOW", 0)
113 syntax = "[(+|-)<nick> [<time>]]|[LIST|HELP]";
114 /* XXX we need to fix this so it can work with translation stuff (i.e. move +- into a seperate param */
117 CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
119 /* syntax: DCCALLOW [+|-]<nick> (<time>) */
120 if (!parameters.size())
122 // display current DCCALLOW list
123 DisplayDCCAllowList(user);
126 else if (parameters.size() > 0)
128 char action = *parameters[0].c_str();
130 // if they didn't specify an action, this is probably a command
131 if (action != '+' && action != '-')
133 if (!strcasecmp(parameters[0].c_str(), "LIST"))
135 // list current DCCALLOW list
136 DisplayDCCAllowList(user);
139 else if (!strcasecmp(parameters[0].c_str(), "HELP"))
147 user->WriteNumeric(ERR_UNKNOWNDCCALLOWCMD, "DCCALLOW command not understood. For help on DCCALLOW, type /DCCALLOW HELP");
152 std::string nick(parameters[0], 1);
153 User *target = ServerInstance->FindNickOnly(nick);
155 if ((target) && (!target->quitting) && (target->registered == REG_ALL))
160 // check if it contains any entries
164 for (dccallowlist::iterator i = dl->begin(); i != dl->end(); ++i)
166 // search through list
167 if (i->nickname == target->nick)
170 user->WriteNumeric(RPL_DCCALLOWREMOVED, user->nick, InspIRCd::Format("Removed %s from your DCCALLOW list", target->nick.c_str()));
176 else if (action == '+')
180 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, "You cannot add yourself to your own DCCALLOW list!");
187 dl = new dccallowlist;
189 // add this user to the userlist
193 if (dl->size() >= maxentries)
195 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, "Too many nicks on DCCALLOW list");
199 for (dccallowlist::const_iterator k = dl->begin(); k != dl->end(); ++k)
201 if (k->nickname == target->nick)
203 user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, InspIRCd::Format("%s is already on your DCCALLOW list", target->nick.c_str()));
208 std::string mask = target->nick+"!"+target->ident+"@"+target->GetDisplayedHost();
209 std::string default_length = ServerInstance->Config->ConfValue("dccallow")->getString("length");
211 unsigned long length;
212 if (parameters.size() < 2)
214 length = InspIRCd::Duration(default_length);
216 else if (!atoi(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
298 : ext("dccallow", ExtensionItem::EXT_USER, this)
303 void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message) CXX11_OVERRIDE
305 dccallowlist* udl = ext.get(user);
307 // remove their DCCALLOW list if they have one
309 stdalgo::erase(ul, user);
311 // remove them from any DCCALLOW lists
312 // they are currently on
316 void OnUserPostNick(User* user, const std::string &oldnick) CXX11_OVERRIDE
321 ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
324 return MOD_RES_PASSTHRU;
326 if (target.type == MessageTarget::TYPE_USER)
328 User* u = target.Get<User>();
330 /* Always allow a user to dcc themselves (although... why?) */
332 return MOD_RES_PASSTHRU;
334 if ((details.text.length()) && (details.text[0] == '\1'))
338 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :DCC SEND m_dnsbl.cpp 3232235786 52650 9676
339 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :VERSION
341 if (strncmp(details.text.c_str(), "\1DCC ", 5) == 0)
344 if (dl && dl->size())
346 for (dccallowlist::const_iterator iter = dl->begin(); iter != dl->end(); ++iter)
347 if (InspIRCd::Match(user->GetFullHost(), iter->hostmask))
348 return MOD_RES_PASSTHRU;
351 std::string buf = details.text.substr(5);
352 size_t s = buf.find(' ');
353 if (s == std::string::npos)
354 return MOD_RES_PASSTHRU;
356 const std::string type = buf.substr(0, s);
358 ConfigTag* conftag = ServerInstance->Config->ConfValue("dccallow");
359 bool blockchat = conftag->getBool("blockchat");
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 defaultaction = conftag->getString("action");
387 std::string filename = buf.substr(first, s);
390 for (unsigned int i = 0; i < bfl.size(); i++)
392 if (InspIRCd::Match(filename, bfl[i].filemask, ascii_case_insensitive_map))
394 /* We have a matching badfile entry, override whatever the default action is */
395 if (stdalgo::string::equalsci(bfl[i].action, "allow"))
396 return MOD_RES_PASSTHRU;
405 /* only follow the default action if no badfile matches were found above */
406 if ((!found) && (defaultaction == "allow"))
407 return MOD_RES_PASSTHRU;
409 user->WriteNotice("The user " + u->nick + " is not accepting DCC SENDs from you. Your file " + filename + " was not sent.");
410 u->WriteNotice(user->nick + " (" + user->ident + "@" + user->GetDisplayedHost() + ") attempted to send you a file named " + filename + ", which was blocked.");
411 u->WriteNotice("If you trust " + user->nick + " and were expecting this, you can type /DCCALLOW HELP for information on the DCCALLOW system.");
414 else if ((blockchat) && (stdalgo::string::equalsci(type, "CHAT")))
416 user->WriteNotice("The user " + u->nick + " is not accepting DCC CHAT requests from you.");
417 u->WriteNotice(user->nick + " (" + user->ident + "@" + user->GetDisplayedHost() + ") attempted to initiate a DCC CHAT session, which was blocked.");
418 u->WriteNotice("If you trust " + user->nick + " and were expecting this, you can type /DCCALLOW HELP for information on the DCCALLOW system.");
424 return MOD_RES_PASSTHRU;
429 for (userlist::iterator iter = ul.begin(); iter != ul.end();)
431 User* u = (User*)(*iter);
437 dccallowlist::iterator iter2 = dl->begin();
438 while (iter2 != dl->end())
440 time_t expires = iter2->set_on + iter2->length;
441 if (iter2->length != 0 && expires <= ServerInstance->Time())
443 u->WriteNumeric(RPL_DCCALLOWEXPIRED, u->nick, InspIRCd::Format("DCCALLOW entry for %s has expired", iter2->nickname.c_str()));
444 iter2 = dl->erase(iter2);
456 iter = ul.erase(iter);
461 void RemoveNick(User* user)
463 /* Iterate through all DCCALLOW lists and remove user */
464 for (userlist::iterator iter = ul.begin(); iter != ul.end();)
466 User *u = (User*)(*iter);
472 for (dccallowlist::iterator i = dl->begin(); i != dl->end(); ++i)
474 if (i->nickname == user->nick)
477 u->WriteNotice(i->nickname + " left the network or changed their nickname and has been removed from your DCCALLOW list");
478 u->WriteNumeric(RPL_DCCALLOWREMOVED, u->nick, InspIRCd::Format("Removed %s from your DCCALLOW list", i->nickname.c_str()));
488 iter = ul.erase(iter);
493 void RemoveFromUserlist(User *user)
495 // remove user from userlist
496 for (userlist::iterator j = ul.begin(); j != ul.end(); ++j)
498 User* u = (User*)(*j);
507 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
509 ConfigTag* tag = ServerInstance->Config->ConfValue("dccallow");
510 cmd.maxentries = tag->getUInt("maxentries", 20);
513 ConfigTagList tags = ServerInstance->Config->ConfTags("banfile");
514 for (ConfigIter i = tags.first; i != tags.second; ++i)
517 bf.filemask = i->second->getString("pattern");
518 bf.action = i->second->getString("action");
523 Version GetVersion() CXX11_OVERRIDE
525 return Version("Provides support for the /DCCALLOW command", VF_COMMON | VF_VENDOR);
529 MODULE_INIT(ModuleDCCAllow)