X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_cgiirc.cpp;h=09f6a4659d88e0d760a85d48166514ed825b68d8;hb=f24239657e749d7d03f9dbafa4128c5720910153;hp=a406ad65806ff2d8c6cac3a51fdce590c2ec7337;hpb=24731c63b6320be22f7b3220236271fa7476b975;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_cgiirc.cpp b/src/modules/m_cgiirc.cpp index a406ad658..09f6a4659 100644 --- a/src/modules/m_cgiirc.cpp +++ b/src/modules/m_cgiirc.cpp @@ -1,39 +1,46 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007-2008 John Brooks + * Copyright (C) 2008 Pippijn van Steenhoven + * Copyright (C) 2006-2008 Craig Edwards + * Copyright (C) 2007 Robin Burchell + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006 Oliver Lupton * - * InspIRCd: (C) 2002-2009 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * 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 free but copyrighted software; see - * the file COPYING for details. + * 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" -#ifndef WINDOWS -#include -#include -#include -#endif +#include "inspircd.h" +#include "xline.h" /* $ModDesc: Change user's hosts connecting from known CGI:IRC hosts */ -enum CGItype { INVALID, PASS, IDENT, PASSFIRST, IDENTFIRST, WEBIRC }; +enum CGItype { PASS, IDENT, PASSFIRST, IDENTFIRST, WEBIRC }; /** Holds a CGI site's details */ -class CGIhost : public classbase +class CGIhost { public: std::string hostmask; CGItype type; std::string password; - CGIhost(const std::string &mask = "", CGItype t = IDENTFIRST, const std::string &spassword ="") + CGIhost(const std::string &mask, CGItype t, const std::string &spassword) : hostmask(mask), type(t), password(spassword) { } @@ -53,12 +60,21 @@ typedef std::vector CGIHostlist; */ class CommandWebirc : public Command { - bool notify; - public: - CGIHostlist Hosts; - CommandWebirc(InspIRCd* Instance, Module* Creator, bool bnotify) - : Command(Instance, Creator, "WEBIRC", 0, 4, true), notify(bnotify) + public: + bool notify; + StringExtItem realhost; + StringExtItem realip; + LocalStringExt webirc_hostname; + LocalStringExt webirc_ip; + + CGIHostlist Hosts; + CommandWebirc(Module* Creator) + : Command(Creator, "WEBIRC", 4), + realhost("cgiirc_realhost", Creator), realip("cgiirc_realip", Creator), + webirc_hostname("cgiirc_webirc_hostname", Creator), webirc_ip("cgiirc_webirc_ip", Creator) { + allow_empty_last_param = false; + works_before_reg = true; this->syntax = "password client hostname ip"; } CmdResult Handle(const std::vector ¶meters, User *user) @@ -66,23 +82,42 @@ class CommandWebirc : public Command if(user->registered == REG_ALL) return CMD_FAILURE; + irc::sockets::sockaddrs ipaddr; + if (!irc::sockets::aptosa(parameters[3], 0, ipaddr)) + { + IS_LOCAL(user)->CommandFloodPenalty += 5000; + ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s tried to use WEBIRC but gave an invalid IP address.", user->GetFullRealHost().c_str()); + return CMD_FAILURE; + } + for(CGIHostlist::iterator iter = Hosts.begin(); iter != Hosts.end(); iter++) { if(InspIRCd::Match(user->host, iter->hostmask, ascii_case_insensitive_map) || InspIRCd::MatchCIDR(user->GetIPString(), iter->hostmask, ascii_case_insensitive_map)) { if(iter->type == WEBIRC && parameters[0] == iter->password) { - user->Extend("cgiirc_realhost", new std::string(user->host)); - user->Extend("cgiirc_realip", new std::string(user->GetIPString())); + realhost.set(user, user->host); + realip.set(user, user->GetIPString()); + + bool host_ok = (parameters[2].length() < 64); + const std::string& newhost = (host_ok ? parameters[2] : parameters[3]); + if (notify) - ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", user->nick.c_str(), user->host.c_str(), parameters[2].c_str(), user->host.c_str()); - user->Extend("cgiirc_webirc_hostname", new std::string(parameters[2])); - user->Extend("cgiirc_webirc_ip", new std::string(parameters[3])); - return CMD_LOCALONLY; + ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", user->nick.c_str(), user->host.c_str(), newhost.c_str(), user->host.c_str()); + + // Check if we're happy with the provided hostname. If it's problematic then make sure we won't set a host later, just the IP + if (host_ok) + webirc_hostname.set(user, parameters[2]); + else + webirc_hostname.unset(user); + + webirc_ip.set(user, parameters[3]); + return CMD_SUCCESS; } } } + IS_LOCAL(user)->CommandFloodPenalty += 5000; ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s tried to use WEBIRC, but didn't match any configured webirc blocks.", user->GetFullRealHost().c_str()); return CMD_FAILURE; } @@ -94,26 +129,30 @@ class CommandWebirc : public Command class CGIResolver : public Resolver { std::string typ; - int theirfd; - User* them; + std::string theiruid; + LocalIntExt& waiting; bool notify; public: - CGIResolver(Module* me, InspIRCd* Instance, bool NotifyOpers, const std::string &source, bool forward, User* u, int userfd, const std::string &type, bool &cached) - : Resolver(Instance, source, forward ? DNS_QUERY_A : DNS_QUERY_PTR4, cached, me), typ(type), theirfd(userfd), them(u), notify(NotifyOpers) { } + CGIResolver(Module* me, bool NotifyOpers, const std::string &source, LocalUser* u, + const std::string &type, bool &cached, LocalIntExt& ext) + : Resolver(source, DNS_QUERY_PTR4, cached, me), typ(type), theiruid(u->uuid), + waiting(ext), notify(NotifyOpers) + { + } virtual void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) { /* Check the user still exists */ - if ((them) && (them == ServerInstance->SE->GetRef(theirfd))) + User* them = ServerInstance->FindUUID(theiruid); + if ((them) && (!them->quitting)) { if (notify) ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", them->nick.c_str(), them->host.c_str(), result.c_str(), typ.c_str()); - them->host.assign(result,0, 64); - them->dhost.assign(result, 0, 64); - if (querytype) - them->SetClientIP(result.c_str()); - them->ident.assign("~cgiirc", 0, 8); + if (result.length() > 64) + return; + them->host = result; + them->dhost = result; them->InvalidateCache(); them->CheckLines(true); } @@ -121,62 +160,112 @@ class CGIResolver : public Resolver virtual void OnError(ResolverError e, const std::string &errormessage) { - if ((them) && (them == ServerInstance->SE->GetRef(theirfd))) + if (!notify) + return; + + User* them = ServerInstance->FindUUID(theiruid); + if ((them) && (!them->quitting)) { - if (notify) - ServerInstance->SNO->WriteToSnoMask('a', "Connecting user %s detected as using CGI:IRC (%s), but their host can't be resolved from their %s!", them->nick.c_str(), them->host.c_str(), typ.c_str()); + ServerInstance->SNO->WriteToSnoMask('a', "Connecting user %s detected as using CGI:IRC (%s), but their host can't be resolved from their %s!", them->nick.c_str(), them->host.c_str(), typ.c_str()); } } virtual ~CGIResolver() { + User* them = ServerInstance->FindUUID(theiruid); + if (!them) + return; + int count = waiting.get(them); + if (count) + waiting.set(them, count - 1); } }; class ModuleCgiIRC : public Module { CommandWebirc cmd; - bool NotifyOpers; -public: - ModuleCgiIRC(InspIRCd* Me) : Module(Me), cmd(Me, this, NotifyOpers) + LocalIntExt waiting; + + static void RecheckClass(LocalUser* user) { - OnRehash(NULL); - ServerInstance->AddCommand(&cmd); + user->MyClass = NULL; + user->SetClass(); + user->CheckClass(); + } + + static void ChangeIP(LocalUser* user, const std::string& newip) + { + ServerInstance->Users->RemoveCloneCounts(user); + user->SetClientIP(newip.c_str()); + ServerInstance->Users->AddLocalClone(user); + ServerInstance->Users->AddGlobalClone(user); + } + + void HandleIdentOrPass(LocalUser* user, const std::string& newip, bool was_pass) + { + cmd.realhost.set(user, user->host); + cmd.realip.set(user, user->GetIPString()); + ChangeIP(user, newip); + user->host = user->dhost = user->GetIPString(); + user->InvalidateCache(); + RecheckClass(user); + // Don't create the resolver if the core couldn't put the user in a connect class or when dns is disabled + if (user->quitting || ServerInstance->Config->NoUserDns) + return; - Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCleanup, I_OnSyncUser, I_OnDecodeMetaData, I_OnUserDisconnect, I_OnUserConnect }; - ServerInstance->Modules->Attach(eventlist, this, 7); + try + { + bool cached; + CGIResolver* r = new CGIResolver(this, cmd.notify, newip, user, (was_pass ? "PASS" : "IDENT"), cached, waiting); + waiting.set(user, waiting.get(user) + 1); + ServerInstance->AddResolver(r, cached); + } + catch (...) + { + if (cmd.notify) + ServerInstance->SNO->WriteToSnoMask('a', "Connecting user %s detected as using CGI:IRC (%s), but I could not resolve their hostname!", user->nick.c_str(), user->host.c_str()); + } } +public: + ModuleCgiIRC() : cmd(this), waiting("cgiirc-delay", this) + { + } - virtual void Prioritize() + void init() { - ServerInstance->Modules->SetPriority(this, I_OnUserConnect, PRIORITY_FIRST); + OnRehash(NULL); + ServiceProvider* providerlist[] = { &cmd, &cmd.realhost, &cmd.realip, &cmd.webirc_hostname, &cmd.webirc_ip, &waiting }; + ServerInstance->Modules->AddServices(providerlist, sizeof(providerlist)/sizeof(ServiceProvider*)); + + Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCheckReady }; + ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); } - virtual void OnRehash(User* user) + void OnRehash(User* user) { - ConfigReader Conf(ServerInstance); cmd.Hosts.clear(); - NotifyOpers = Conf.ReadFlag("cgiirc", "opernotice", 0); // If we send an oper notice when a CGI:IRC has their host changed. - - if(Conf.GetError() == CONF_VALUE_NOT_FOUND) - NotifyOpers = true; + // Do we send an oper notice when a CGI:IRC has their host changed? + cmd.notify = ServerInstance->Config->ConfValue("cgiirc")->getBool("opernotice", true); - for(int i = 0; i < Conf.Enumerate("cgihost"); i++) + ConfigTagList tags = ServerInstance->Config->ConfTags("cgihost"); + for (ConfigIter i = tags.first; i != tags.second; ++i) { - std::string hostmask = Conf.ReadValue("cgihost", "mask", i); // An allowed CGI:IRC host - std::string type = Conf.ReadValue("cgihost", "type", i); // What type of user-munging we do on this host. - std::string password = Conf.ReadValue("cgihost", "password", i); + ConfigTag* tag = i->second; + std::string hostmask = tag->getString("mask"); // An allowed CGI:IRC host + std::string type = tag->getString("type"); // What type of user-munging we do on this host. + std::string password = tag->getString("password"); if(hostmask.length()) { - if (type == "webirc" && !password.length()) { - ServerInstance->Logs->Log("CONFIG",DEFAULT, "m_cgiirc: Missing password in config: %s", hostmask.c_str()); + if (type == "webirc" && password.empty()) + { + ServerInstance->Logs->Log("CONFIG",DEFAULT, "m_cgiirc: Missing password in config: %s", hostmask.c_str()); } else { - CGItype cgitype = INVALID; + CGItype cgitype; if (type == "pass") cgitype = PASS; else if (type == "ident") @@ -184,14 +273,14 @@ public: else if (type == "passfirst") cgitype = PASSFIRST; else if (type == "webirc") - { cgitype = WEBIRC; - } - - if (cgitype == INVALID) + else + { cgitype = PASS; + ServerInstance->Logs->Log("CONFIG",DEFAULT, "m_cgiirc.so: Invalid value in config: %s, setting it to \"pass\"", type.c_str()); + } - cmd.Hosts.push_back(CGIhost(hostmask,cgitype, password.length() ? password : "" )); + cmd.Hosts.push_back(CGIhost(hostmask, cgitype, password)); } } else @@ -202,54 +291,36 @@ public: } } - virtual void OnCleanup(int target_type, void* item) + ModResult OnCheckReady(LocalUser *user) { - if(target_type == TYPE_USER) - { - User* user = (User*)item; - std::string* realhost; - std::string* realip; + if (waiting.get(user)) + return MOD_RES_DENY; - if(user->GetExt("cgiirc_realhost", realhost)) - { - delete realhost; - user->Shrink("cgiirc_realhost"); - } + std::string *webirc_ip = cmd.webirc_ip.get(user); + if (!webirc_ip) + return MOD_RES_PASSTHRU; - if(user->GetExt("cgiirc_realip", realip)) - { - delete realip; - user->Shrink("cgiirc_realip"); - } - } - } + ChangeIP(user, *webirc_ip); - virtual void OnSyncUser(User* user, Module* proto, void* opaque) - { - std::string* data; - if (user->GetExt("cgiirc_realhost", data)) - proto->ProtoSendMetaData(opaque, user, "cgiirc_realhost", *data); - if (user->GetExt("cgiirc_realip", data)) - proto->ProtoSendMetaData(opaque, user, "cgiirc_realip", *data); - } + std::string* webirc_hostname = cmd.webirc_hostname.get(user); + user->host = user->dhost = (webirc_hostname ? *webirc_hostname : user->GetIPString()); + user->InvalidateCache(); - virtual void OnDecodeMetaData(Extensible* target, const std::string &extname, const std::string &extdata) - { - User* dest = dynamic_cast(target); - std::string* bleh; - if(dest && ((extname == "cgiirc_realhost") || (extname == "cgiirc_realip")) && (!dest->GetExt(extname, bleh))) - { - dest->Extend(extname, new std::string(extdata)); - } - } + RecheckClass(user); + if (user->quitting) + return MOD_RES_DENY; - virtual void OnUserDisconnect(User* user) - { - OnCleanup(TYPE_USER, user); - } + user->CheckLines(true); + if (user->quitting) + return MOD_RES_DENY; + + cmd.webirc_hostname.unset(user); + cmd.webirc_ip.unset(user); + return MOD_RES_PASSTHRU; + } - virtual int OnUserRegister(User* user) + ModResult OnUserRegister(LocalUser* user) { for(CGIHostlist::iterator iter = cmd.Hosts.begin(); iter != cmd.Hosts.end(); iter++) { @@ -282,77 +353,17 @@ public: { // We don't need to do anything here } - return 0; + return MOD_RES_PASSTHRU; } } - return 0; - } - - virtual void OnUserConnect(User* user) - { - std::string *webirc_hostname, *webirc_ip; - if(user->GetExt("cgiirc_webirc_hostname", webirc_hostname)) - { - user->host.assign(*webirc_hostname, 0, 64); - user->dhost.assign(*webirc_hostname, 0, 64); - delete webirc_hostname; - user->InvalidateCache(); - user->Shrink("cgiirc_webirc_hostname"); - } - if(user->GetExt("cgiirc_webirc_ip", webirc_ip)) - { - ServerInstance->Users->RemoveCloneCounts(user); - user->SetClientIP(webirc_ip->c_str()); - delete webirc_ip; - user->InvalidateCache(); - user->Shrink("cgiirc_webirc_ip"); - ServerInstance->Users->AddLocalClone(user); - ServerInstance->Users->AddGlobalClone(user); - user->CheckClass(); - user->CheckLines(true); - } + return MOD_RES_PASSTHRU; } - bool CheckPass(User* user) + bool CheckPass(LocalUser* user) { if(IsValidHost(user->password)) { - user->Extend("cgiirc_realhost", new std::string(user->host)); - user->Extend("cgiirc_realip", new std::string(user->GetIPString())); - user->host.assign(user->password, 0, 64); - user->dhost.assign(user->password, 0, 64); - user->InvalidateCache(); - - bool valid = false; - ServerInstance->Users->RemoveCloneCounts(user); - valid = user->SetClientIP(user->password.c_str()); - ServerInstance->Users->AddLocalClone(user); - ServerInstance->Users->AddGlobalClone(user); - user->CheckClass(); - - if (valid) - { - /* We were given a IP in the password, we don't do DNS so they get this is as their host as well. */ - if(NotifyOpers) - ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from PASS", user->nick.c_str(), user->host.c_str(), user->password.c_str()); - } - else - { - /* We got as resolved hostname in the password. */ - try - { - - bool cached; - CGIResolver* r = new CGIResolver(this, ServerInstance, NotifyOpers, user->password, false, user, user->GetFd(), "PASS", cached); - ServerInstance->AddResolver(r, cached); - } - catch (...) - { - if (NotifyOpers) - ServerInstance->SNO->WriteToSnoMask('a', "Connecting user %s detected as using CGI:IRC (%s), but I could not resolve their hostname!", user->nick.c_str(), user->host.c_str()); - } - } - + HandleIdentOrPass(user, user->password, true); user->password.clear(); return true; } @@ -360,15 +371,14 @@ public: return false; } - bool CheckIdent(User* user) + bool CheckIdent(LocalUser* user) { const char* ident; - int len = user->ident.length(); in_addr newip; - if(len == 8) + if (user->ident.length() == 8) ident = user->ident.c_str(); - else if(len == 9 && user->ident[0] == '~') + else if (user->ident.length() == 9 && user->ident[0] == '~') ident = user->ident.c_str() + 1; else return false; @@ -378,39 +388,17 @@ public: if (errno) return false; newip.s_addr = htonl(ipaddr); - char* newipstr = inet_ntoa(newip); - - user->Extend("cgiirc_realhost", new std::string(user->host)); - user->Extend("cgiirc_realip", new std::string(user->GetIPString())); - ServerInstance->Users->RemoveCloneCounts(user); - user->SetClientIP(newipstr); - ServerInstance->Users->AddLocalClone(user); - ServerInstance->Users->AddGlobalClone(user); - user->CheckClass(); - user->host = newipstr; - user->dhost = newipstr; - user->ident.assign("~cgiirc", 0, 8); - try - { - - bool cached; - CGIResolver* r = new CGIResolver(this, ServerInstance, NotifyOpers, newipstr, false, user, user->GetFd(), "IDENT", cached); - ServerInstance->AddResolver(r, cached); - } - catch (...) - { - user->InvalidateCache(); + std::string newipstr(inet_ntoa(newip)); - if(NotifyOpers) - ServerInstance->SNO->WriteToSnoMask('a', "Connecting user %s detected as using CGI:IRC (%s), but I could not resolve their hostname!", user->nick.c_str(), user->host.c_str()); - } + user->ident = "~cgiirc"; + HandleIdentOrPass(user, newipstr, false); return true; } bool IsValidHost(const std::string &host) { - if(!host.size()) + if(!host.size() || host.size() > 64) return false; for(unsigned int i = 0; i < host.size(); i++) @@ -429,48 +417,9 @@ public: return true; } - bool IsValidIP(const std::string &ip) - { - if(ip.size() < 7 || ip.size() > 15) - return false; - - short sincedot = 0; - short dots = 0; - - for(unsigned int i = 0; i < ip.size(); i++) - { - if((dots <= 3) && (sincedot <= 3)) - { - if((ip[i] >= '0') && (ip[i] <= '9')) - { - sincedot++; - } - else if(ip[i] == '.') - { - sincedot = 0; - dots++; - } - } - else - { - return false; - - } - } - - if(dots != 3) - return false; - - return true; - } - - virtual ~ModuleCgiIRC() - { - } - virtual Version GetVersion() { - return Version("$Id$",VF_VENDOR,API_VERSION); + return Version("Change user's hosts connecting from known CGI:IRC hosts",VF_VENDOR); } };