X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_sasl.cpp;h=9f7e1527bc78e6c4b46775efaca6b27b2cc412ad;hb=f471083cd0519d47c7c7a09029813ede41994f7b;hp=298544edce84a228365acacaa03cc36efde7f3e2;hpb=fb3964d5c007900061e86e392ceb786bd47260c0;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_sasl.cpp b/src/modules/m_sasl.cpp index 298544edc..9f7e1527b 100644 --- a/src/modules/m_sasl.cpp +++ b/src/modules/m_sasl.cpp @@ -1,51 +1,231 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2009 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * Copyright (C) 2009-2010 Daniel De Graaf + * 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 "m_cap.h" -#include "account.h" +#include "modules/cap.h" +#include "modules/account.h" +#include "modules/sasl.h" +#include "modules/ssl.h" +#include "modules/spanningtree.h" + +static std::string sasl_target; + +class ServerTracker : public SpanningTreeEventListener +{ + bool online; + + void Update(const Server* server, bool linked) + { + if (sasl_target == "*") + return; + + if (InspIRCd::Match(server->GetName(), sasl_target)) + { + ServerInstance->Logs->Log(MODNAME, LOG_VERBOSE, "SASL target server \"%s\" %s", sasl_target.c_str(), (linked ? "came online" : "went offline")); + online = linked; + } + } + + void OnServerLink(const Server* server) CXX11_OVERRIDE + { + Update(server, true); + } -/* $ModDesc: Provides support for IRC Authentication Layer (aka: atheme SASL) via AUTHENTICATE. */ + void OnServerSplit(const Server* server) CXX11_OVERRIDE + { + Update(server, false); + } + + public: + ServerTracker(Module* mod) + : SpanningTreeEventListener(mod) + { + Reset(); + } + + void Reset() + { + if (sasl_target == "*") + { + online = true; + return; + } + + online = false; + + ProtocolInterface::ServerList servers; + ServerInstance->PI->GetServerList(servers); + for (ProtocolInterface::ServerList::const_iterator i = servers.begin(); i != servers.end(); ++i) + { + const ProtocolInterface::ServerInfo& server = *i; + if (InspIRCd::Match(server.servername, sasl_target)) + { + online = true; + break; + } + } + } + + bool IsOnline() const { return online; } +}; + +class SASLCap : public Cap::Capability +{ + std::string mechlist; + const ServerTracker& servertracker; + + bool OnRequest(LocalUser* user, bool adding) CXX11_OVERRIDE + { + // Requesting this cap is allowed anytime + if (adding) + return true; + + // But removing it can only be done when unregistered + return (user->registered != REG_ALL); + } + + bool OnList(LocalUser* user) CXX11_OVERRIDE + { + return servertracker.IsOnline(); + } + + const std::string* GetValue(LocalUser* user) const CXX11_OVERRIDE + { + return &mechlist; + } + + public: + SASLCap(Module* mod, const ServerTracker& tracker) + : Cap::Capability(mod, "sasl") + , servertracker(tracker) + { + } + + void SetMechlist(const std::string& newmechlist) + { + if (mechlist == newmechlist) + return; + + mechlist = newmechlist; + NotifyValueChange(); + } +}; enum SaslState { SASL_INIT, SASL_COMM, SASL_DONE }; enum SaslResult { SASL_OK, SASL_FAIL, SASL_ABORT }; +static Events::ModuleEventProvider* saslevprov; + +static void SendSASL(const parameterlist& params) +{ + if (!ServerInstance->PI->SendEncapsulatedData(sasl_target, "SASL", params)) + { + FOREACH_MOD_CUSTOM(*saslevprov, SASLEventListener, OnSASLAuth, (params)); + } +} + /** * Tracks SASL authentication state like charybdis does. --nenolod */ class SaslAuthenticator { private: - InspIRCd *ServerInstance; std::string agent; User *user; SaslState state; SaslResult result; bool state_announced; + /* taken from m_services_account */ + static bool ReadCGIIRCExt(const char* extname, User* user, std::string& out) + { + ExtensionItem* wiext = ServerInstance->Extensions.GetItem(extname); + if (!wiext) + return false; + + if (wiext->creator->ModuleSourceFile != "m_cgiirc.so") + return false; + + StringExtItem* stringext = static_cast(wiext); + std::string* addr = stringext->get(user); + if (!addr) + return false; + + out = *addr; + return true; + } + + + void SendHostIP() + { + std::string host, ip; + + if (!ReadCGIIRCExt("cgiirc_webirc_hostname", user, host)) + { + host = user->host; + } + if (!ReadCGIIRCExt("cgiirc_webirc_ip", user, ip)) + { + ip = user->GetIPString(); + } + else + { + /* IP addresses starting with a : on irc are a Bad Thing (tm) */ + if (ip.c_str()[0] == ':') + ip.insert(ip.begin(),1,'0'); + } + + parameterlist params; + params.push_back(sasl_target); + params.push_back("SASL"); + params.push_back(user->uuid); + params.push_back("*"); + params.push_back("H"); + params.push_back(host); + params.push_back(ip); + + SendSASL(params); + } + public: - SaslAuthenticator(User *user_, std::string method, Module *ctor) + SaslAuthenticator(User* user_, const std::string& method) : user(user_), state(SASL_INIT), state_announced(false) { + SendHostIP(); + parameterlist params; - params.push_back("*"); - params.push_back("SASL"); params.push_back(user->uuid); params.push_back("*"); params.push_back("S"); params.push_back(method); - ServerInstance->PI->SendEncapsulatedData(params); + LocalUser* localuser = IS_LOCAL(user); + if (method == "EXTERNAL" && localuser) + { + std::string fp = SSLClientCert::GetFingerprint(&localuser->eh); + + if (fp.size()) + params.push_back(fp); + } + + SendSASL(params); } SaslResult GetSaslResult(const std::string &result_) @@ -66,26 +246,32 @@ class SaslAuthenticator { case SASL_INIT: this->agent = msg[0]; - this->user->Write("AUTHENTICATE %s", msg[3].c_str()); this->state = SASL_COMM; - break; + /* fall through */ case SASL_COMM: if (msg[0] != this->agent) return this->state; - if (msg[2] != "D") + if (msg.size() < 4) + return this->state; + + if (msg[2] == "C") this->user->Write("AUTHENTICATE %s", msg[3].c_str()); - else + else if (msg[2] == "D") { this->state = SASL_DONE; this->result = this->GetSaslResult(msg[3]); } + else if (msg[2] == "M") + this->user->WriteNumeric(908, msg[3], "are available SASL mechanisms"); + else + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Services sent an unknown SASL message \"%s\" \"%s\"", msg[2].c_str(), msg[3].c_str()); break; case SASL_DONE: break; default: - ServerInstance->Logs->Log("m_sasl", DEFAULT, "WTF: SaslState is not a known state (%d)", this->state); + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "WTF: SaslState is not a known state (%d)", this->state); break; } @@ -104,17 +290,15 @@ class SaslAuthenticator return true; parameterlist params; - params.push_back("*"); - params.push_back("SASL"); params.push_back(this->user->uuid); params.push_back(this->agent); params.push_back("C"); params.insert(params.end(), parameters.begin(), parameters.end()); - ServerInstance->PI->SendEncapsulatedData(params); + SendSASL(params); - if (parameters[0][0] == '*') + if (parameters[0].c_str()[0] == '*') { this->Abort(); return false; @@ -131,13 +315,13 @@ class SaslAuthenticator switch (this->result) { case SASL_OK: - this->user->WriteNumeric(903, "%s :SASL authentication successful", this->user->nick.c_str()); + this->user->WriteNumeric(903, "SASL authentication successful"); break; case SASL_ABORT: - this->user->WriteNumeric(906, "%s :SASL authentication aborted", this->user->nick.c_str()); + this->user->WriteNumeric(906, "SASL authentication aborted"); break; case SASL_FAIL: - this->user->WriteNumeric(904, "%s :SASL authentication failed", this->user->nick.c_str()); + this->user->WriteNumeric(904, "SASL authentication failed"); break; default: break; @@ -151,24 +335,26 @@ class CommandAuthenticate : public Command { public: SimpleExtItem& authExt; - GenericCap& cap; - CommandAuthenticate(Module* Creator, SimpleExtItem& ext, GenericCap& Cap) + Cap::Capability& cap; + CommandAuthenticate(Module* Creator, SimpleExtItem& ext, Cap::Capability& Cap) : Command(Creator, "AUTHENTICATE", 1), authExt(ext), cap(Cap) { works_before_reg = true; + allow_empty_last_param = false; } CmdResult Handle (const std::vector& parameters, User *user) { - /* Only allow AUTHENTICATE on unregistered clients */ - if (user->registered != REG_ALL) { - if (!cap.ext.get(user)) + if (!cap.get(user)) + return CMD_FAILURE; + + if (parameters[0].find(' ') != std::string::npos || parameters[0][0] == ':') return CMD_FAILURE; SaslAuthenticator *sasl = authExt.get(user); if (!sasl) - authExt.set(user, new SaslAuthenticator(user, parameters[0], creator)); + authExt.set(user, new SaslAuthenticator(user, parameters[0])); else if (sasl->SendClientMessage(parameters) == false) // IAL abort extension --nenolod { sasl->AnnounceState(); @@ -185,15 +371,15 @@ class CommandSASL : public Command SimpleExtItem& authExt; CommandSASL(Module* Creator, SimpleExtItem& ext) : Command(Creator, "SASL", 2), authExt(ext) { - this->disabled = true; // should not be called by users + this->flags_needed = FLAG_SERVERONLY; // should not be called by users } CmdResult Handle(const std::vector& parameters, User *user) { - User* target = ServerInstance->FindNick(parameters[1]); + User* target = ServerInstance->FindUUID(parameters[1]); if (!target) { - ServerInstance->Logs->Log("m_sasl", DEBUG,"User not found in sasl ENCAP event: %s", parameters[1].c_str()); + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "User not found in sasl ENCAP event: %s", parameters[1].c_str()); return CMD_FAILURE; } @@ -219,24 +405,37 @@ class CommandSASL : public Command class ModuleSASL : public Module { SimpleExtItem authExt; - GenericCap cap; + ServerTracker servertracker; + SASLCap cap; CommandAuthenticate auth; CommandSASL sasl; + Events::ModuleEventProvider sasleventprov; + public: ModuleSASL() - : authExt("sasl_auth", this), cap(this, "sasl"), auth(this, authExt, cap), sasl(this, authExt) + : authExt("sasl_auth", ExtensionItem::EXT_USER, this) + , servertracker(this) + , cap(this, servertracker) + , auth(this, authExt, cap) + , sasl(this, authExt) + , sasleventprov(this, "event/sasl") { - Implementation eventlist[] = { I_OnEvent, I_OnUserRegister }; - ServerInstance->Modules->Attach(eventlist, this, 2); - - providerbase* providelist[] = { &auth, &sasl, &authExt }; - ServerInstance->AddServices(providelist, 3); + saslevprov = &sasleventprov; + } + void init() CXX11_OVERRIDE + { if (!ServerInstance->Modules->Find("m_services_account.so") || !ServerInstance->Modules->Find("m_cap.so")) - ServerInstance->Logs->Log("m_sasl", DEFAULT, "WARNING: m_services_account.so and m_cap.so are not loaded! m_sasl.so will NOT function correctly until these two modules are loaded!"); + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "WARNING: m_services_account.so and m_cap.so are not loaded! m_sasl.so will NOT function correctly until these two modules are loaded!"); } - ModResult OnUserRegister(LocalUser *user) + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + sasl_target = ServerInstance->Config->ConfValue("sasl")->getString("target", "*"); + servertracker.Reset(); + } + + void OnUserConnect(LocalUser *user) CXX11_OVERRIDE { SaslAuthenticator *sasl_ = authExt.get(user); if (sasl_) @@ -244,22 +443,17 @@ class ModuleSASL : public Module sasl_->Abort(); authExt.unset(user); } - - return MOD_RES_PASSTHRU; - } - - ~ModuleSASL() - { } - Version GetVersion() + void OnDecodeMetaData(Extensible* target, const std::string& extname, const std::string& extdata) CXX11_OVERRIDE { - return Version("Provides support for IRC Authentication Layer (aka: atheme SASL) via AUTHENTICATE.",VF_VENDOR); + if ((target == NULL) && (extname == "saslmechlist")) + cap.SetMechlist(extdata); } - void OnEvent(Event &ev) + Version GetVersion() CXX11_OVERRIDE { - cap.HandleEvent(ev); + return Version("Provides support for IRC Authentication Layer (aka: SASL) via AUTHENTICATE.", VF_VENDOR); } };