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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2011 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "protocol.h"
#include "m_cap.h"
#include "account.h"
#include "sasl.h"
/* $ModDesc: Provides support for IRC Authentication Layer (aka: atheme SASL) via AUTHENTICATE. */
class SaslAuthenticator;
static std::string sasl_target = "*";
static SimpleExtItem<SASLHook>* sasl_ext;
/** Pass-thru to server */
class SaslAuthenticator : public SASLHook
{
std::string agent;
public:
SaslAuthenticator(User* user, const std::string& method)
{
parameterlist params;
params.push_back(sasl_target);
params.push_back("SASL");
params.push_back(user->uuid);
params.push_back("*");
params.push_back("S");
params.push_back(method);
ServerInstance->PI->SendEncapsulatedData(params);
}
void ProcessClient(User* user, const std::vector<std::string>& parameters)
{
parameterlist params;
params.push_back(sasl_target);
params.push_back("SASL");
params.push_back(user->uuid);
params.push_back(agent);
params.push_back("C");
params.insert(params.end(), parameters.begin(), parameters.end());
ServerInstance->PI->SendEncapsulatedData(params);
if (parameters[0][0] == '*')
{
user->WriteNumeric(906, "%s :SASL authentication aborted", user->nick.c_str());
sasl_ext->unset(user);
}
}
void ProcessServer(User* user, const std::vector<std::string> &msg)
{
if (agent.empty())
agent = msg[0];
else if (agent != msg[0])
return;
if (msg[2] == "D")
{
// SASL DONE requires us to translate to a numeric
if (msg[3] == "F")
{
user->WriteNumeric(904, "%s :SASL authentication failed", user->nick.c_str());
sasl_ext->unset(user);
}
else if (msg[3] == "A")
{
user->WriteNumeric(906, "%s :SASL authentication aborted", user->nick.c_str());
sasl_ext->unset(user);
}
else
{
user->WriteNumeric(903, "%s :SASL authentication successful", user->nick.c_str());
sasl_ext->unset(user);
}
}
else
{
user->Write("AUTHENTICATE %s", msg[3].c_str());
}
}
};
class CommandAuthenticate : public Command
{
public:
CommandAuthenticate(Module* Creator) : Command(Creator, "AUTHENTICATE", 1)
{
works_before_reg = true;
}
CmdResult Handle (const std::vector<std::string>& parameters, User *user)
{
/* Only allow AUTHENTICATE on unregistered clients */
if (user->registered == REG_ALL)
return CMD_FAILURE;
SASLHook *sasl = sasl_ext->get(user);
if (!sasl)
{
SASLSearch search(creator, user, parameters[0]);
if (search.auth)
sasl = search.auth;
else
sasl = new SaslAuthenticator(user, parameters[0]);
sasl_ext->set(user, sasl);
}
else
{
sasl->ProcessClient(user, parameters);
}
return CMD_SUCCESS;
}
};
class CommandSASL : public Command
{
public:
CommandSASL(Module* Creator) : Command(Creator, "SASL", 2)
{
flags_needed = FLAG_SERVERONLY; // should not be called by users
}
CmdResult Handle(const std::vector<std::string>& parameters, User *user)
{
User* target = ServerInstance->FindNick(parameters[1]);
if (!target)
{
ServerInstance->Logs->Log("m_sasl", DEBUG,"User not found in sasl ENCAP event: %s", parameters[1].c_str());
return CMD_FAILURE;
}
SASLHook *sasl = sasl_ext->get(target);
if (!sasl)
{
ServerInstance->Logs->Log("m_sasl", DEBUG, "SASL ext not found in sasl ENCAP event for %s", parameters[1].c_str());
return CMD_FAILURE;
}
sasl->ProcessServer(user, parameters);
return CMD_SUCCESS;
}
RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
{
return ROUTE_BROADCAST;
}
};
class ModuleSASL : public Module
{
SimpleExtItem<SASLHook> authExt;
GenericCap cap;
CommandAuthenticate auth;
CommandSASL sasl;
public:
ModuleSASL()
: authExt(EXTENSIBLE_USER, "sasl_auth", this), cap(this, "sasl"), auth(this), sasl(this)
{
sasl_ext = &authExt;
}
void init()
{
Implementation eventlist[] = { I_OnEvent, I_OnUserRegister };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
ServiceProvider* providelist[] = { &auth, &sasl, &authExt };
ServerInstance->Modules->AddServices(providelist, 3);
}
void ReadConfig(ConfigReadStatus&)
{
sasl_target = ServerInstance->Config->GetTag("sasl")->getString("target", "*");
}
void OnUserRegister(LocalUser *user)
{
SASLHook *sasl_ = authExt.get(user);
if (sasl_)
{
user->WriteNumeric(906, "%s :SASL authentication aborted", user->nick.c_str());
authExt.unset(user);
}
}
Version GetVersion()
{
return Version("Provides support for IRC Authentication Layer (aka: atheme SASL) via AUTHENTICATE.",VF_VENDOR);
}
void OnEvent(Event &ev)
{
cap.HandleEvent(ev);
}
};
MODULE_INIT(ModuleSASL)
|
