X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmodules%2Fm_sasl.cpp;h=57e605d61a0bcb59698a15caefb5ce4b7bc50a01;hb=HEAD;hp=fe1438ccffe7c59a8c1d747a58d72a8f8f476693;hpb=c46f8a368c42f64284244f3d2dfc022a383294fa;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_sasl.cpp b/src/modules/m_sasl.cpp index fe1438ccf..57e605d61 100644 --- a/src/modules/m_sasl.cpp +++ b/src/modules/m_sasl.cpp @@ -1,8 +1,15 @@ /* * InspIRCd -- Internet Relay Chat Daemon * + * Copyright (C) 2016 Adam + * Copyright (C) 2014 Mantas Mikulėnas + * Copyright (C) 2013-2016, 2018 Attila Molnar + * Copyright (C) 2013, 2017-2020 Sadie Powell + * Copyright (C) 2013 Daniel Vassdal + * Copyright (C) 2012, 2019 Robby * Copyright (C) 2009-2010 Daniel De Graaf - * Copyright (C) 2008 Craig Edwards + * Copyright (C) 2008, 2010 Craig Edwards + * Copyright (C) 2008 Thomas Stagner * * 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 @@ -23,7 +30,7 @@ #include "modules/account.h" #include "modules/sasl.h" #include "modules/ssl.h" -#include "modules/spanningtree.h" +#include "modules/server.h" enum { @@ -37,8 +44,12 @@ enum static std::string sasl_target; -class ServerTracker : public SpanningTreeEventListener +class ServerTracker + : public ServerProtocol::LinkEventListener { + // Stop GCC warnings about the deprecated OnServerSplit event. + using ServerProtocol::LinkEventListener::OnServerSplit; + bool online; void Update(const Server* server, bool linked) @@ -58,14 +69,14 @@ class ServerTracker : public SpanningTreeEventListener Update(server, true); } - void OnServerSplit(const Server* server) CXX11_OVERRIDE + void OnServerSplit(const Server* server, bool error) CXX11_OVERRIDE { Update(server, false); } public: ServerTracker(Module* mod) - : SpanningTreeEventListener(mod) + : ServerProtocol::LinkEventListener(mod) { Reset(); } @@ -98,21 +109,28 @@ class ServerTracker : public SpanningTreeEventListener class SASLCap : public Cap::Capability { + private: std::string mechlist; const ServerTracker& servertracker; + UserCertificateAPI sslapi; bool OnRequest(LocalUser* user, bool adding) CXX11_OVERRIDE { - // Requesting this cap is allowed anytime - if (adding) - return true; + if (requiressl && sslapi && !sslapi->GetCertificate(user)) + return false; - // But removing it can only be done when unregistered - return (user->registered != REG_ALL); + // Servers MUST NAK any sasl capability request if the authentication layer + // is unavailable. + return servertracker.IsOnline(); } bool OnList(LocalUser* user) CXX11_OVERRIDE { + if (requiressl && sslapi && !sslapi->GetCertificate(user)) + return false; + + // Servers MUST NOT advertise the sasl capability if the authentication layer + // is unavailable. return servertracker.IsOnline(); } @@ -122,9 +140,11 @@ class SASLCap : public Cap::Capability } public: + bool requiressl; SASLCap(Module* mod, const ServerTracker& tracker) : Cap::Capability(mod, "sasl") , servertracker(tracker) + , sslapi(mod) { } @@ -143,9 +163,9 @@ enum SaslResult { SASL_OK, SASL_FAIL, SASL_ABORT }; static Events::ModuleEventProvider* saslevprov; -static void SendSASL(LocalUser* user, const std::string& agent, char mode, const parameterlist& parameters) +static void SendSASL(LocalUser* user, const std::string& agent, char mode, const std::vector& parameters) { - parameterlist params(parameters.size() + 3); + CommandBase::Params params; params.push_back(user->uuid); params.push_back(agent); params.push_back(ConvToStr(mode)); @@ -157,6 +177,8 @@ static void SendSASL(LocalUser* user, const std::string& agent, char mode, const } } +static ClientProtocol::EventProvider* g_protoev; + /** * Tracks SASL authentication state like charybdis does. --nenolod */ @@ -169,26 +191,29 @@ class SaslAuthenticator SaslResult result; bool state_announced; - void SendHostIP() + void SendHostIP(UserCertificateAPI& sslapi) { - parameterlist params; - params.push_back(user->host); + std::vector params; + params.push_back(user->GetRealHost()); params.push_back(user->GetIPString()); + params.push_back(sslapi && sslapi->GetCertificate(user) ? "S" : "P"); SendSASL(user, "*", 'H', params); } public: - SaslAuthenticator(LocalUser* user_, const std::string& method) - : user(user_), state(SASL_INIT), state_announced(false) + SaslAuthenticator(LocalUser* user_, const std::string& method, UserCertificateAPI& sslapi) + : user(user_) + , state(SASL_INIT) + , state_announced(false) { - SendHostIP(); + SendHostIP(sslapi); - parameterlist params; + std::vector params; params.push_back(method); - const std::string fp = SSLClientCert::GetFingerprint(&user->eh); - if (fp.size()) + const std::string fp = sslapi ? sslapi->GetFingerprint(user) : ""; + if (!fp.empty()) params.push_back(fp); SendSASL(user, "*", 'S', params); @@ -206,15 +231,15 @@ class SaslAuthenticator } /* checks for and deals with a state change. */ - SaslState ProcessInboundMessage(const std::vector &msg) + SaslState ProcessInboundMessage(const CommandBase::Params& msg) { switch (this->state) { - case SASL_INIT: + case SASL_INIT: this->agent = msg[0]; this->state = SASL_COMM; /* fall through */ - case SASL_COMM: + case SASL_COMM: if (msg[0] != this->agent) return this->state; @@ -222,7 +247,15 @@ class SaslAuthenticator return this->state; if (msg[2] == "C") - this->user->Write("AUTHENTICATE %s", msg[3].c_str()); + { + ClientProtocol::Message authmsg("AUTHENTICATE"); + authmsg.PushParamRef(msg[3]); + + ClientProtocol::Event authevent(*g_protoev, authmsg); + LocalUser* const localuser = IS_LOCAL(user); + if (localuser) + localuser->Send(authevent); + } else if (msg[2] == "D") { this->state = SASL_DONE; @@ -234,9 +267,9 @@ class SaslAuthenticator 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: + case SASL_DONE: break; - default: + default: ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "WTF: SaslState is not a known state (%d)", this->state); break; } @@ -268,16 +301,16 @@ class SaslAuthenticator switch (this->result) { - case SASL_OK: + case SASL_OK: this->user->WriteNumeric(RPL_SASLSUCCESS, "SASL authentication successful"); break; - case SASL_ABORT: + case SASL_ABORT: this->user->WriteNumeric(ERR_SASLABORTED, "SASL authentication aborted"); break; - case SASL_FAIL: + case SASL_FAIL: this->user->WriteNumeric(ERR_SASLFAIL, "SASL authentication failed"); break; - default: + default: break; } @@ -288,22 +321,25 @@ class SaslAuthenticator class CommandAuthenticate : public SplitCommand { private: - // The maximum length of an AUTHENTICATE request. - static const size_t MAX_AUTHENTICATE_SIZE = 400; + // The maximum length of an AUTHENTICATE request. + static const size_t MAX_AUTHENTICATE_SIZE = 400; public: SimpleExtItem& authExt; Cap::Capability& cap; + UserCertificateAPI sslapi; + CommandAuthenticate(Module* Creator, SimpleExtItem& ext, Cap::Capability& Cap) : SplitCommand(Creator, "AUTHENTICATE", 1) , authExt(ext) , cap(Cap) + , sslapi(Creator) { works_before_reg = true; allow_empty_last_param = false; } - CmdResult HandleLocal(const std::vector& parameters, LocalUser* user) + CmdResult HandleLocal(LocalUser* user, const Params& parameters) CXX11_OVERRIDE { { if (!cap.get(user)) @@ -320,7 +356,7 @@ class CommandAuthenticate : public SplitCommand SaslAuthenticator *sasl = authExt.get(user); if (!sasl) - authExt.set(user, new SaslAuthenticator(user, parameters[0])); + authExt.set(user, new SaslAuthenticator(user, parameters[0], sslapi)); else if (sasl->SendClientMessage(parameters) == false) // IAL abort extension --nenolod { sasl->AnnounceState(); @@ -340,7 +376,7 @@ class CommandSASL : public Command this->flags_needed = FLAG_SERVERONLY; // should not be called by users } - CmdResult Handle(const std::vector& parameters, User *user) + CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE { User* target = ServerInstance->FindUUID(parameters[1]); if (!target) @@ -362,7 +398,7 @@ class CommandSASL : public Command return CMD_SUCCESS; } - RouteDescriptor GetRouting(User* user, const std::vector& parameters) + RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE { return ROUTE_BROADCAST; } @@ -376,6 +412,7 @@ class ModuleSASL : public Module CommandAuthenticate auth; CommandSASL sasl; Events::ModuleEventProvider sasleventprov; + ClientProtocol::EventProvider protoev; public: ModuleSASL() @@ -385,8 +422,10 @@ class ModuleSASL : public Module , auth(this, authExt, cap) , sasl(this, authExt) , sasleventprov(this, "event/sasl") + , protoev(this, auth.name) { saslevprov = &sasleventprov; + g_protoev = &protoev; } void init() CXX11_OVERRIDE @@ -397,7 +436,14 @@ class ModuleSASL : public Module void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE { - sasl_target = ServerInstance->Config->ConfValue("sasl")->getString("target", "*"); + ConfigTag* tag = ServerInstance->Config->ConfValue("sasl"); + + const std::string target = tag->getString("target"); + if (target.empty()) + throw ModuleException(" must be set to the name of your services server!"); + + cap.requiressl = tag->getBool("requiressl"); + sasl_target = target; servertracker.Reset(); } @@ -409,7 +455,7 @@ class ModuleSASL : public Module Version GetVersion() CXX11_OVERRIDE { - return Version("Provides support for IRC Authentication Layer (aka: SASL) via AUTHENTICATE.", VF_VENDOR); + return Version("Provides the IRCv3 sasl client capability.", VF_VENDOR); } };