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/>.
31 RPL_DCCALLOWSTART = 990,
32 RPL_DCCALLOWLIST = 991,
33 RPL_DCCALLOWEND = 992,
34 RPL_DCCALLOWTIMED = 993,
35 RPL_DCCALLOWPERMANENT = 994,
36 RPL_DCCALLOWREMOVED = 995,
37 ERR_DCCALLOWINVALID = 996,
38 RPL_DCCALLOWEXPIRED = 997,
39 ERR_UNKNOWNDCCALLOWCMD = 998,
40 // TODO: These numerics are conflicting and should be removed
41 // and be replaced with helpop.
42 RPL_DCCALLOWHELP = 998,
43 RPL_ENDOFDCCALLOWHELP = 999
46 static const char* const helptext[] =
48 "DCCALLOW [(+|-)<nick> [<time>]]|[LIST|HELP]",
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(const std::vector<std::string>& parameters, User* user) 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 std::vector<std::string>& parameters) CXX11_OVERRIDE
257 return ROUTE_BROADCAST;
260 void DisplayHelp(User* user)
262 for (size_t i = 0; i < sizeof(helptext)/sizeof(helptext[0]); i++)
263 user->WriteNumeric(RPL_DCCALLOWHELP, helptext[i]);
264 user->WriteNumeric(RPL_ENDOFDCCALLOWHELP, "End of DCCALLOW HELP");
266 LocalUser* localuser = IS_LOCAL(user);
268 localuser->CommandFloodPenalty += 4000;
271 void DisplayDCCAllowList(User* user)
273 // display current DCCALLOW list
274 user->WriteNumeric(RPL_DCCALLOWSTART, "Users on your DCCALLOW list:");
279 for (dccallowlist::const_iterator c = dl->begin(); c != dl->end(); ++c)
281 user->WriteNumeric(RPL_DCCALLOWLIST, user->nick, InspIRCd::Format("%s (%s)", c->nickname.c_str(), c->hostmask.c_str()));
285 user->WriteNumeric(RPL_DCCALLOWEND, "End of DCCALLOW list");
290 class ModuleDCCAllow : public Module
297 : ext("dccallow", ExtensionItem::EXT_USER, this)
302 void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message) CXX11_OVERRIDE
304 dccallowlist* udl = ext.get(user);
306 // remove their DCCALLOW list if they have one
308 stdalgo::erase(ul, user);
310 // remove them from any DCCALLOW lists
311 // they are currently on
315 void OnUserPostNick(User* user, const std::string &oldnick) CXX11_OVERRIDE
320 ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
323 return MOD_RES_PASSTHRU;
325 if (target.type == MessageTarget::TYPE_USER)
327 User* u = target.Get<User>();
329 /* Always allow a user to dcc themselves (although... why?) */
331 return MOD_RES_PASSTHRU;
333 if ((details.text.length()) && (details.text[0] == '\1'))
337 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :DCC SEND m_dnsbl.cpp 3232235786 52650 9676
338 // :jamie!jamie@test-D4457903BA652E0F.silverdream.org PRIVMSG eimaj :VERSION
340 if (strncmp(details.text.c_str(), "\1DCC ", 5) == 0)
343 if (dl && dl->size())
345 for (dccallowlist::const_iterator iter = dl->begin(); iter != dl->end(); ++iter)
346 if (InspIRCd::Match(user->GetFullHost(), iter->hostmask))
347 return MOD_RES_PASSTHRU;
350 std::string buf = details.text.substr(5);
351 size_t s = buf.find(' ');
352 if (s == std::string::npos)
353 return MOD_RES_PASSTHRU;
355 const std::string type = buf.substr(0, s);
357 ConfigTag* conftag = ServerInstance->Config->ConfValue("dccallow");
358 bool blockchat = conftag->getBool("blockchat");
360 if (stdalgo::string::equalsci(type, "SEND"))
364 buf = buf.substr(s + 1);
366 if (!buf.empty() && buf[0] == '"')
368 s = buf.find('"', 1);
370 if (s == std::string::npos || s <= 1)
371 return MOD_RES_PASSTHRU;
382 if (s == std::string::npos)
383 return MOD_RES_PASSTHRU;
385 std::string defaultaction = conftag->getString("action");
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 (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 ConfigTag* tag = ServerInstance->Config->ConfValue("dccallow");
509 cmd.maxentries = tag->getInt("maxentries", 20);
512 ConfigTagList tags = ServerInstance->Config->ConfTags("banfile");
513 for (ConfigIter i = tags.first; i != tags.second; ++i)
516 bf.filemask = i->second->getString("pattern");
517 bf.action = i->second->getString("action");
522 Version GetVersion() CXX11_OVERRIDE
524 return Version("Provides support for the /DCCALLOW command", VF_COMMON | VF_VENDOR);
528 MODULE_INIT(ModuleDCCAllow)