X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_rline.cpp;h=e6414c5dd85f53b847e4387e6f1abdf8bd9af6ca;hb=3151d60c1ecc9462e4c335282ee6c31672f45111;hp=5036423a114b86eb32abdd4ff1c8e82e135d4889;hpb=c91c94014e8891ca8edcd4c363e34effb18b5962;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_rline.cpp b/src/modules/m_rline.cpp index 5036423a1..e6414c5dd 100644 --- a/src/modules/m_rline.cpp +++ b/src/modules/m_rline.cpp @@ -1,33 +1,44 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2007 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * Copyright (C) 2018 linuxdaemon + * Copyright (C) 2017, 2019 Matt Schatz + * Copyright (C) 2013, 2017-2018, 2020 Sadie Powell + * Copyright (C) 2012-2013, 2016 Attila Molnar + * Copyright (C) 2012, 2018-2019 Robby + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2009 Uli Schlachter + * Copyright (C) 2008-2009 Robin Burchell + * Copyright (C) 2008 Thomas Stagner + * Copyright (C) 2008 Craig Edwards * - * This program is free but copyrighted software; see - * the file COPYING for details. + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. * - * --------------------------------------------------- + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ + #include "inspircd.h" -#include +#include "modules/regex.h" +#include "modules/stats.h" #include "xline.h" -/* $ModDesc: RLINE: Regexp user banning. */ -/* $CompileFlags: exec("pcre-config --cflags") */ -/* $LinkerFlags: exec("pcre-config --libs") rpath("pcre-config --libs") -lpcre */ - -#ifdef WINDOWS -#pragma comment(lib, "pcre.lib") -#endif +static bool ZlineOnMatch = false; +static bool added_zline = false; -class CoreExport RLine : public XLine +class RLine : public XLine { - public: + public: - /** Create a R-Line. + /** Create a R-line. * @param s_time The set time * @param d The duration of the xline * @param src The sender of the xline @@ -35,80 +46,90 @@ class CoreExport RLine : public XLine * @param regex Pattern to match with * @ */ - RLine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char* regexs) : XLine(Instance, s_time, d, src, re, "K") + RLine(time_t s_time, unsigned long d, const std::string& src, const std::string& re, const std::string& regexs, dynamic_reference& rxfactory) + : XLine(s_time, d, src, re, "R") + , matchtext(regexs) { - const char *error; - int erroffset; - - matchtext = regexs; - - regex = pcre_compile(regexs, 0, &error, &erroffset, NULL); - - if (!regex) - { - ServerInstance->SNO->WriteToSnoMask('x',"Error in regular expression: %s at offset %d: %s\n", regexs, erroffset, error); - throw CoreException("Bad regex pattern."); - } + /* This can throw on failure, but if it does we DONT catch it here, we catch it and display it + * where the object is created, we might not ALWAYS want it to output stuff to snomask x all the time + */ + regex = rxfactory->Create(regexs); } /** Destructor */ ~RLine() { - pcre_free(regex); + delete regex; } - virtual bool Matches(User *u) + bool Matches(User* u) CXX11_OVERRIDE { - std::string compare = compare.assign(u->nick) + "!" + u->ident + "@" + u->host + " " + u->fullname; + LocalUser* lu = IS_LOCAL(u); + if (lu && lu->exempt) + return false; - ServerInstance->Log(DEBUG, "Matching " + matchtext + " against string " + compare); - - if (pcre_exec(regex, NULL, compare.c_str(), compare.length(), 0, 0, NULL, 0) > -1) - { - // Bang. :D - return true; - } - - return false; + const std::string host = u->nick + "!" + u->ident + "@" + u->GetRealHost() + " " + u->GetRealName(); + const std::string ip = u->nick + "!" + u->ident + "@" + u->GetIPString() + " " + u->GetRealName(); + return (regex->Matches(host) || regex->Matches(ip)); } - virtual bool Matches(const std::string&); // Ignored for us - - virtual void Apply(User* u) + bool Matches(const std::string& compare) CXX11_OVERRIDE { - DefaultApply(u, "R", true); + return regex->Matches(compare); } - virtual void DisplayExpiry() + void Apply(User* u) CXX11_OVERRIDE { - ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed R-Line %s (set by %s %d seconds ago)", this->matchtext.c_str(), this->source, this->duration); + if (ZlineOnMatch) + { + ZLine* zl = new ZLine(ServerInstance->Time(), duration ? expiry - ServerInstance->Time() : 0, ServerInstance->Config->ServerName.c_str(), reason.c_str(), u->GetIPString()); + if (ServerInstance->XLines->AddLine(zl, NULL)) + { + std::string expirystr = zl->duration ? InspIRCd::Format(" to expire in %s (on %s)", InspIRCd::DurationString(zl->duration).c_str(), InspIRCd::TimeString(zl->expiry).c_str()) : ""; + ServerInstance->SNO->WriteToSnoMask('x', "Z-line added due to R-line match on %s%s: %s", + zl->ipaddr.c_str(), expirystr.c_str(), zl->reason.c_str()); + added_zline = true; + } + else + delete zl; + } + DefaultApply(u, "R", false); } - virtual const char* Displayable() + const std::string& Displayable() CXX11_OVERRIDE { - return matchtext.c_str(); + return matchtext; } std::string matchtext; - pcre *regex; + Regex *regex; }; /** An XLineFactory specialized to generate RLine* pointers */ -class CoreExport RLineFactory : public XLineFactory +class RLineFactory : public XLineFactory { public: - RLineFactory(InspIRCd* Instance) : XLineFactory(Instance, "R") { } + dynamic_reference& rxfactory; + RLineFactory(dynamic_reference& rx) : XLineFactory("R"), rxfactory(rx) + { + } /** Generate a RLine */ - XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask) - { - return new RLine(ServerInstance, set_time, duration, source, reason, xline_specific_mask); - } + XLine* Generate(time_t set_time, unsigned long duration, const std::string& source, const std::string& reason, const std::string& xline_specific_mask) CXX11_OVERRIDE + { + if (!rxfactory) + { + ServerInstance->SNO->WriteToSnoMask('a', "Cannot create regexes until engine is set to a loaded provider!"); + throw ModuleException("Regex engine not set or loaded!"); + } + + return new RLine(set_time, duration, source, reason, xline_specific_mask, rxfactory); + } }; /** Handle /RLINE @@ -116,28 +137,37 @@ class CoreExport RLineFactory : public XLineFactory */ class CommandRLine : public Command { + std::string rxengine; + RLineFactory& factory; + public: - CommandRLine (InspIRCd* Instance) : Command(Instance,"DALINFO", 1, 'o') + CommandRLine(Module* Creator, RLineFactory& rlf) : Command(Creator,"RLINE", 1, 3), factory(rlf) { - this->source = "m_rline.so"; + flags_needed = 'o'; this->syntax = " [ :]"; } - CmdResult Handle (const char** parameters, int pcnt, User *user) + CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE { - if (pcnt >= 3) + + if (parameters.size() >= 3) { // Adding - XXX todo make this respect tag perhaps.. - long duration = ServerInstance->Duration(parameters[1]); - RLine *r = NULL; + unsigned long duration; + if (!InspIRCd::Duration(parameters[1], duration)) + { + user->WriteNotice("*** Invalid duration for R-line."); + return CMD_FAILURE; + } + XLine *r = NULL; try { - r = new RLine(ServerInstance, ServerInstance->Time(), duration, user->nick, parameters[2], parameters[0]); + r = factory.Generate(ServerInstance->Time(), duration, user->nick.c_str(), parameters[2].c_str(), parameters[0].c_str()); } - catch (...) + catch (ModuleException &e) { - ; // Do nothing. If we get here, the regex was fucked up, and they already got told it fucked up. + ServerInstance->SNO->WriteToSnoMask('a', "Could not add R-line: " + e.GetReason()); } if (r) @@ -146,13 +176,13 @@ class CommandRLine : public Command { if (!duration) { - ServerInstance->SNO->WriteToSnoMask('x',"%s added permanent R-Line for %s.", user->nick, parameters[0]); + ServerInstance->SNO->WriteToSnoMask('x', "%s added permanent R-line for %s: %s", user->nick.c_str(), parameters[0].c_str(), parameters[2].c_str()); } else { - time_t c_requires_crap = duration + ServerInstance->Time(); - ServerInstance->SNO->WriteToSnoMask('x', "%s added timed R-Line for %s, expires on %s", user->nick, parameters[0], - ServerInstance->TimeString(c_requires_crap).c_str()); + ServerInstance->SNO->WriteToSnoMask('x', "%s added timed R-line for %s, expires in %s (on %s): %s", + user->nick.c_str(), parameters[0].c_str(), InspIRCd::DurationString(duration).c_str(), + InspIRCd::TimeString(ServerInstance->Time() + duration).c_str(), parameters[2].c_str()); } ServerInstance->XLines->ApplyLines(); @@ -160,42 +190,172 @@ class CommandRLine : public Command else { delete r; - user->WriteServ("NOTICE %s :*** R-Line for %s already exists", user->nick, parameters[0]); + user->WriteNotice("*** R-line for " + parameters[0] + " already exists."); } } } else { - if (ServerInstance->XLines->DelLine(parameters[0],"G",user)) + std::string reason; + + if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "R", reason, user)) { - ServerInstance->SNO->WriteToSnoMask('x',"%s Removed G-line on %s.",user->nick,parameters[0]); + ServerInstance->SNO->WriteToSnoMask('x', "%s removed R-line on %s: %s", user->nick.c_str(), parameters[0].c_str(), reason.c_str()); } else { - user->WriteServ("NOTICE %s :*** G-line %s not found in list, try /stats g.",user->nick,parameters[0]); + user->WriteNotice("*** R-line " + parameters[0] + " not found on the list."); } } return CMD_SUCCESS; } + + RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE + { + if (IS_LOCAL(user)) + return ROUTE_LOCALONLY; // spanningtree will send ADDLINE + + return ROUTE_BROADCAST; + } }; -class ModuleRLine : public Module +class ModuleRLine : public Module, public Stats::EventListener { - private: - CommandRLine *r; + dynamic_reference rxfactory; + RLineFactory f; + CommandRLine r; + bool MatchOnNickChange; + bool initing; + RegexFactory* factory; + public: - ModuleRLine(InspIRCd* Me) : Module(Me) + ModuleRLine() + : Stats::EventListener(this) + , rxfactory(this, "regex") + , f(rxfactory) + , r(this, f) + , initing(true) + { + } + + void init() CXX11_OVERRIDE { - // Create a new command - r = new CommandRLine(ServerInstance); - ServerInstance->AddCommand(r); + ServerInstance->XLines->RegisterFactory(&f); } - virtual ~ModuleRLine() + ~ModuleRLine() { + ServerInstance->XLines->DelAll("R"); + ServerInstance->XLines->UnregisterFactory(&f); + } + + Version GetVersion() CXX11_OVERRIDE + { + return Version("Adds the /RLINE command which allows server operators to prevent users matching a nickname!username@hostname+realname regular expression from connecting to the server.", VF_COMMON | VF_VENDOR, rxfactory ? rxfactory->name : ""); + } + + ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE + { + // Apply lines on user connect + XLine *rl = ServerInstance->XLines->MatchesLine("R", user); + + if (rl) + { + // Bang. :P + rl->Apply(user); + return MOD_RES_DENY; + } + return MOD_RES_PASSTHRU; + } + + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + ConfigTag* tag = ServerInstance->Config->ConfValue("rline"); + + MatchOnNickChange = tag->getBool("matchonnickchange"); + ZlineOnMatch = tag->getBool("zlineonmatch"); + std::string newrxengine = tag->getString("engine"); + + factory = rxfactory ? (rxfactory.operator->()) : NULL; + + if (newrxengine.empty()) + rxfactory.SetProvider("regex"); + else + rxfactory.SetProvider("regex/" + newrxengine); + + if (!rxfactory) + { + if (newrxengine.empty()) + ServerInstance->SNO->WriteToSnoMask('a', "WARNING: No regex engine loaded - R-line functionality disabled until this is corrected."); + else + ServerInstance->SNO->WriteToSnoMask('a', "WARNING: Regex engine '%s' is not loaded - R-line functionality disabled until this is corrected.", newrxengine.c_str()); + + ServerInstance->XLines->DelAll(f.GetType()); + } + else if ((!initing) && (rxfactory.operator->() != factory)) + { + ServerInstance->SNO->WriteToSnoMask('a', "Regex engine has changed, removing all R-lines."); + ServerInstance->XLines->DelAll(f.GetType()); + } + + initing = false; + } + + ModResult OnStats(Stats::Context& stats) CXX11_OVERRIDE + { + if (stats.GetSymbol() != 'R') + return MOD_RES_PASSTHRU; + + ServerInstance->XLines->InvokeStats("R", stats); + return MOD_RES_DENY; + } + + void OnUserPostNick(User *user, const std::string &oldnick) CXX11_OVERRIDE + { + if (!IS_LOCAL(user)) + return; + + if (!MatchOnNickChange) + return; + + XLine *rl = ServerInstance->XLines->MatchesLine("R", user); + + if (rl) + { + // Bang! :D + rl->Apply(user); + } + } + + void OnBackgroundTimer(time_t curtime) CXX11_OVERRIDE + { + if (added_zline) + { + added_zline = false; + ServerInstance->XLines->ApplyLines(); + } + } + + void OnUnloadModule(Module* mod) CXX11_OVERRIDE + { + // If the regex engine became unavailable or has changed, remove all R-lines. + if (!rxfactory) + { + ServerInstance->XLines->DelAll(f.GetType()); + } + else if (rxfactory.operator->() != factory) + { + factory = rxfactory.operator->(); + ServerInstance->XLines->DelAll(f.GetType()); + } + } + + void Prioritize() CXX11_OVERRIDE + { + Module* mod = ServerInstance->Modules->Find("m_cgiirc.so"); + ServerInstance->Modules->SetPriority(this, I_OnUserRegister, PRIORITY_AFTER, mod); } }; MODULE_INIT(ModuleRLine) -