147 lines
5.6 KiB
C++
147 lines
5.6 KiB
C++
/*
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Copyright 2015-2016 Amebis
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Copyright 2016 GÉANT
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This file is part of GÉANTLink.
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GÉANTLink is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GÉANTLink is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GÉANTLink. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "StdAfx.h"
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using namespace std;
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using namespace winstd;
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//////////////////////////////////////////////////////////////////////
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// eap::method_pap_diameter
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//////////////////////////////////////////////////////////////////////
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eap::method_pap_diameter::method_pap_diameter(_In_ module &mod, _In_ config_method_pap &cfg, _In_ credentials_pass &cred) :
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m_cfg(cfg),
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m_cred(cred),
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m_phase(phase_unknown),
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method(mod)
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{
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}
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eap::method_pap_diameter::method_pap_diameter(_Inout_ method_pap_diameter &&other) :
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m_cfg ( other.m_cfg ),
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m_cred ( other.m_cred ),
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m_phase (std::move(other.m_phase )),
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m_packet_res(std::move(other.m_packet_res)),
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method (std::move(other ))
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{
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}
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eap::method_pap_diameter& eap::method_pap_diameter::operator=(_Inout_ method_pap_diameter &&other)
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{
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if (this != std::addressof(other)) {
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assert(std::addressof(m_cfg ) == std::addressof(other.m_cfg )); // Move method within same configuration only!
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assert(std::addressof(m_cred) == std::addressof(other.m_cred)); // Move method within same credentials only!
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(method&)*this = std::move(other );
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m_phase = std::move(other.m_phase );
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m_packet_res = std::move(other.m_packet_res);
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}
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return *this;
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}
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void eap::method_pap_diameter::begin_session(
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_In_ DWORD dwFlags,
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_In_ const EapAttributes *pAttributeArray,
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_In_ HANDLE hTokenImpersonateUser,
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_In_opt_ DWORD dwMaxSendPacketSize)
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{
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method::begin_session(dwFlags, pAttributeArray, hTokenImpersonateUser, dwMaxSendPacketSize);
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// Presume authentication will fail with generic protocol failure. (Pesimist!!!)
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// We will reset once we get get_result(Success) call.
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m_cfg.m_last_status = config_method::status_auth_failed;
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m_cfg.m_last_msg.clear();
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m_phase = phase_init;
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}
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EapPeerMethodResponseAction eap::method_pap_diameter::process_request_packet(
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_In_bytecount_(dwReceivedPacketSize) const void *pReceivedPacket,
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_In_ DWORD dwReceivedPacketSize)
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{
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UNREFERENCED_PARAMETER(pReceivedPacket);
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UNREFERENCED_PARAMETER(dwReceivedPacketSize);
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switch (m_phase) {
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case phase_init: {
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m_module.log_event(&EAPMETHOD_METHOD_HANDSHAKE_START2, event_data((unsigned int)eap_type_legacy_pap), event_data::blank);
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// Convert username and password to UTF-8.
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sanitizing_string identity_utf8, password_utf8;
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WideCharToMultiByte(CP_UTF8, 0, m_cred.m_identity, identity_utf8, NULL, NULL);
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WideCharToMultiByte(CP_UTF8, 0, m_cred.m_password, password_utf8, NULL, NULL);
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// PAP passwords must be padded to 16B boundary according to RFC 5281. Will not add random extra padding here, as length obfuscation should be done by outer transport layers.
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size_t padding_password_ex = (16 - password_utf8.length()) % 16;
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password_utf8.append(padding_password_ex, 0);
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// Diameter AVP (User-Name=1, User-Password=2)
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m_packet_res.clear();
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diameter_avp_append(1, diameter_avp_flag_mandatory, identity_utf8.data(), (unsigned int)identity_utf8.size(), m_packet_res);
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diameter_avp_append(2, diameter_avp_flag_mandatory, password_utf8.data(), (unsigned int)password_utf8.size(), m_packet_res);
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m_phase = phase_finished;
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m_cfg.m_last_status = config_method::status_cred_invalid; // Blame credentials if we fail beyond this point.
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return EapPeerMethodResponseActionSend;
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}
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case phase_finished:
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return EapPeerMethodResponseActionNone;
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default:
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throw invalid_argument(string_printf(__FUNCTION__ " Unknown phase (phase %u).", m_phase));
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}
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}
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void eap::method_pap_diameter::get_response_packet(
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_Out_ sanitizing_blob &packet,
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_In_opt_ DWORD size_max)
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{
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if (m_packet_res.size() > size_max)
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throw invalid_argument(string_printf(__FUNCTION__ " This method does not support packet fragmentation, but the data size is too big to fit in one packet (packet: %u, maximum: %u).", m_packet_res.size(), size_max));
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packet.assign(m_packet_res.begin(), m_packet_res.end());
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}
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void eap::method_pap_diameter::get_result(
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_In_ EapPeerMethodResultReason reason,
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_Inout_ EapPeerMethodResult *pResult)
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{
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assert(pResult);
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method::get_result(reason, pResult);
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if (reason == EapPeerMethodResultSuccess)
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m_cfg.m_last_status = config_method::status_success;
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// Always ask EAP host to save the connection data. And it will save it *only* when we report "success".
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// Don't worry. EapHost is well aware of failed authentication condition.
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pResult->fSaveConnectionData = TRUE;
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pResult->fIsSuccess = TRUE;
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}
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