2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
7 * This file is part of InspIRCd. InspIRCd is free software: you can
8 * redistribute it and/or modify it under the terms of the GNU General Public
9 * License as published by the Free Software Foundation, version 2.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 /* $ModDesc: Provides support for IRC Authentication Layer (aka: atheme SASL) via AUTHENTICATE. */
29 enum SaslState { SASL_INIT, SASL_COMM, SASL_DONE };
30 enum SaslResult { SASL_OK, SASL_FAIL, SASL_ABORT };
32 static std::string sasl_target = "*";
34 static void SendSASL(const parameterlist& params)
36 if (!ServerInstance->PI->SendEncapsulatedData(params))
38 SASLFallback(NULL, params);
43 * Tracks SASL authentication state like charybdis does. --nenolod
45 class SaslAuthenticator
55 SaslAuthenticator(User *user_, std::string method, Module *ctor)
56 : user(user_), state(SASL_INIT), state_announced(false)
59 params.push_back(sasl_target);
60 params.push_back("SASL");
61 params.push_back(user->uuid);
62 params.push_back("*");
63 params.push_back("S");
64 params.push_back(method);
66 if (method == "EXTERNAL" && IS_LOCAL(user_))
68 SocketCertificateRequest req(&((LocalUser*)user_)->eh, ServerInstance->Modules->Find("m_sasl.so"));
69 std::string fp = req.GetFingerprint();
78 SaslResult GetSaslResult(const std::string &result_)
89 /* checks for and deals with a state change. */
90 SaslState ProcessInboundMessage(const std::vector<std::string> &msg)
96 this->user->Write("AUTHENTICATE %s", msg[3].c_str());
97 this->state = SASL_COMM;
100 if (msg[0] != this->agent)
104 this->user->Write("AUTHENTICATE %s", msg[3].c_str());
107 this->state = SASL_DONE;
108 this->result = this->GetSaslResult(msg[3]);
115 ServerInstance->Logs->Log("m_sasl", DEFAULT, "WTF: SaslState is not a known state (%d)", this->state);
124 this->state = SASL_DONE;
125 this->result = SASL_ABORT;
128 bool SendClientMessage(const std::vector<std::string>& parameters)
130 if (this->state != SASL_COMM)
133 parameterlist params;
134 params.push_back(sasl_target);
135 params.push_back("SASL");
136 params.push_back(this->user->uuid);
137 params.push_back(this->agent);
138 params.push_back("C");
140 params.insert(params.end(), parameters.begin(), parameters.end());
144 if (parameters[0][0] == '*')
153 void AnnounceState(void)
155 if (this->state_announced)
158 switch (this->result)
161 this->user->WriteNumeric(903, "%s :SASL authentication successful", this->user->nick.c_str());
164 this->user->WriteNumeric(906, "%s :SASL authentication aborted", this->user->nick.c_str());
167 this->user->WriteNumeric(904, "%s :SASL authentication failed", this->user->nick.c_str());
173 this->state_announced = true;
177 class CommandAuthenticate : public Command
180 SimpleExtItem<SaslAuthenticator>& authExt;
182 CommandAuthenticate(Module* Creator, SimpleExtItem<SaslAuthenticator>& ext, GenericCap& Cap)
183 : Command(Creator, "AUTHENTICATE", 1), authExt(ext), cap(Cap)
185 works_before_reg = true;
188 CmdResult Handle (const std::vector<std::string>& parameters, User *user)
190 /* Only allow AUTHENTICATE on unregistered clients */
191 if (user->registered != REG_ALL)
193 if (!cap.ext.get(user))
196 SaslAuthenticator *sasl = authExt.get(user);
198 authExt.set(user, new SaslAuthenticator(user, parameters[0], creator));
199 else if (sasl->SendClientMessage(parameters) == false) // IAL abort extension --nenolod
201 sasl->AnnounceState();
209 class CommandSASL : public Command
212 SimpleExtItem<SaslAuthenticator>& authExt;
213 CommandSASL(Module* Creator, SimpleExtItem<SaslAuthenticator>& ext) : Command(Creator, "SASL", 2), authExt(ext)
215 this->flags_needed = FLAG_SERVERONLY; // should not be called by users
218 CmdResult Handle(const std::vector<std::string>& parameters, User *user)
220 User* target = ServerInstance->FindNick(parameters[1]);
221 if ((!target) || (IS_SERVER(target)))
223 ServerInstance->Logs->Log("m_sasl", DEBUG,"User not found in sasl ENCAP event: %s", parameters[1].c_str());
227 SaslAuthenticator *sasl = authExt.get(target);
231 SaslState state = sasl->ProcessInboundMessage(parameters);
232 if (state == SASL_DONE)
234 sasl->AnnounceState();
235 authExt.unset(target);
240 RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
242 return ROUTE_BROADCAST;
246 class ModuleSASL : public Module
248 SimpleExtItem<SaslAuthenticator> authExt;
250 CommandAuthenticate auth;
255 : authExt("sasl_auth", this), cap(this, "sasl"), auth(this, authExt, cap), sasl(this, authExt)
262 Implementation eventlist[] = { I_OnEvent, I_OnUserRegister, I_OnRehash };
263 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
265 ServiceProvider* providelist[] = { &auth, &sasl, &authExt };
266 ServerInstance->Modules->AddServices(providelist, 3);
268 if (!ServerInstance->Modules->Find("m_services_account.so") || !ServerInstance->Modules->Find("m_cap.so"))
269 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!");
274 sasl_target = ServerInstance->Config->ConfValue("sasl")->getString("target", "*");
277 ModResult OnUserRegister(LocalUser *user)
279 SaslAuthenticator *sasl_ = authExt.get(user);
286 return MOD_RES_PASSTHRU;
291 return Version("Provides support for IRC Authentication Layer (aka: atheme SASL) via AUTHENTICATE.",VF_VENDOR);
294 void OnEvent(Event &ev)
300 MODULE_INIT(ModuleSASL)