Remove spurious EAP_NO_EXPORTS macros and add missing EAP_FUNC_EXPORT markers, to fix Bug 629 and address Bug 2460
/*
* Copyright (c) 2001-2006 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of the License "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description: EAP and WLAN authentication protocols.
*
*/
/*
* %version: 33 %
*/
// This is enumeration of EAPOL source code.
#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)
#undef EAP_FILE_NUMBER_ENUM
#define EAP_FILE_NUMBER_ENUM 76
#undef EAP_FILE_NUMBER_DATE
#define EAP_FILE_NUMBER_DATE 1127594498
#endif //#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)
#include "eap_am_memory.h"
#include "eap_tools.h"
#include "eap_type_gsmsim.h"
#include "eap_type_gsmsim_header.h"
#include "eap_type_gsmsim_payloads.h"
#include "eap_type_gsmsim_mac_attributes.h"
#include "abs_eap_am_type_gsmsim.h"
#include "eap_crypto_api.h"
#include "eap_state_notification.h"
#include "abs_eap_am_mutex.h"
#include "eap_automatic_variable.h"
#include "eap_type_gsmsim_header.h"
#include "eap_am_type_gsmsim.h"
//--------------------------------------------------
/** @file */
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::generate_nai(
eap_variable_data_c * const new_nai,
const bool use_manual_default_realm,
const eap_variable_data_c * const nai_realm,
const eap_variable_data_c * const id_IMSI_or_pseudonym,
const bool id_is_imsi,
const eap_variable_data_c * const IMSI,
const eap_variable_data_c * const automatic_realm,
const u32_t length_of_mnc)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
if (id_IMSI_or_pseudonym == 0
|| id_IMSI_or_pseudonym->get_is_valid_data() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
eap_status_e status = eap_status_not_supported;
status = new_nai->init(id_IMSI_or_pseudonym->get_data_length()+1u);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
new_nai->set_is_valid();
eap_variable_data_c local_username(m_am_tools);
status = local_username.set_buffer_length(id_IMSI_or_pseudonym->get_data_length());
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
local_username.set_data_length(id_IMSI_or_pseudonym->get_data_length());
m_am_tools->memmove(
local_username.get_data(id_IMSI_or_pseudonym->get_data_length()),
id_IMSI_or_pseudonym->get_data(),
id_IMSI_or_pseudonym->get_data_length());
new_nai->set_data_length(0u);
if (id_is_imsi == true)
{
// Note the first octet is reserved for IMSI prefix.
status = new_nai->add_data(GSMSIM_IMSI_PREFIX_CHARACTER, 1u);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
// This could be IMSI or pseudonym.
status = new_nai->add_data(&local_username);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (use_manual_default_realm == true
&& nai_realm != 0
&& nai_realm->get_is_valid_data() == true)
{
if (nai_realm->get_data_length() > 0ul)
{
status = new_nai->add_data(GSMSIM_AT_CHARACTER, 1u);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
status = new_nai->add_data(nai_realm);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (IMSI != 0
&& IMSI->get_is_valid_data() == true
&& IMSI->get_data_length() >= EAP_TYPE_GSMSIM_MINIMUM_IMSI_LENGTH)
{
status = new_nai->add_data(GSMSIM_AT_CHARACTER, 1u);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (automatic_realm != 0
&& automatic_realm->get_is_valid_data() == true)
{
// We must use automatic realm.
status = new_nai->add_data(automatic_realm);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// We must use automatic realm (Example: "wlan.mnc456.mcc123.3gppnetwork.org").
status = new_nai->add_data(GSMSIM_OWLAN_ORG_PREFIX_STRING, GSMSIM_OWLAN_ORG_PREFIX_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = new_nai->add_data(GSMSIM_OWLAN_DOT_STRING, GSMSIM_OWLAN_DOT_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = new_nai->add_data(GSMSIM_OWLAN_MNC_STRING, GSMSIM_OWLAN_MNC_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// MNC part.
if (length_of_mnc == EAP_TYPE_GSMSIM_MNC_LENGTH_2_BYTES)
{
// Add zero digit.
u8_t zero = '0';
status = new_nai->add_data(&zero, sizeof(zero));
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
status = new_nai->add_data(IMSI->get_data_offset(EAP_TYPE_GSMSIM_MNC_OFFSET, length_of_mnc), length_of_mnc);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = new_nai->add_data(GSMSIM_OWLAN_DOT_STRING, GSMSIM_OWLAN_DOT_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = new_nai->add_data(GSMSIM_OWLAN_MCC_STRING, GSMSIM_OWLAN_MCC_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// MCC part is in index 0 and it is 3 bytes long.
status = new_nai->add_data(IMSI->get_data_offset(EAP_TYPE_GSMSIM_MCC_OFFSET, EAP_TYPE_GSMSIM_MCC_LENGTH), EAP_TYPE_GSMSIM_MCC_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = new_nai->add_data(GSMSIM_OWLAN_DOT_STRING, GSMSIM_OWLAN_DOT_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = new_nai->add_data(GSMSIM_OWLAN_ORG_STRING, GSMSIM_OWLAN_ORG_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
}
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("new_nai"),
new_nai->get_data(),
new_nai->get_data_length()));
if (new_nai->get_data_length() < sizeof(u8_t))
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_nai);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::query_SIM_IMSI_or_pseudonym_or_reauthentication_id(
eap_variable_data_c * const IMSI,
eap_variable_data_c * const pseudonym_identity,
eap_variable_data_c * const reauthentication_identity,
eap_variable_data_c * const automatic_realm, ///< If this is not used, do not add any data to this parameter.
u32_t * const length_of_mnc,
const bool must_be_synchronous,
const gsmsim_payload_AT_type_e required_identity,
const eap_type_gsmsim_complete_e required_completion,
const u8_t received_eap_identifier)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);
eap_status_e status = eap_status_process_general_error;
save_current_state();
set_state(eap_type_gsmsim_state_pending_identity_query);
status = m_am_type_gsmsim->query_SIM_IMSI_or_pseudonym_or_reauthentication_id(
must_be_synchronous,
IMSI,
pseudonym_identity,
reauthentication_identity,
automatic_realm,
length_of_mnc,
required_identity,
required_completion,
received_eap_identifier);
if (status == eap_status_pending_request)
{
// This is pending query, that will be completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_completed_request)
{
// This is already completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status != eap_status_ok
&& status != eap_status_success)
{
// This is an error case.
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_ok)
{
if (m_use_pseudonym_identity == false)
{
// We do not want use pseudonym identity.
pseudonym_identity->reset();
}
if (m_use_reauthentication_identity == false)
{
// We do not want use re-authentication identity.
reauthentication_identity->reset();
}
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::check_rands(
const eap_variable_data_c * const n_rands
)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);
if ((n_rands->get_data_length() % SIM_RAND_LENGTH) != 0)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_data_payload);
}
const u32_t rand_count = n_rands->get_data_length() / SIM_RAND_LENGTH;
if (rand_count < m_minimum_rand_count)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_not_enough_challenges);
}
u32_t ind = 0ul;
for (ind = 0ul; ind+1ul < rand_count; ind++)
{
const u8_t * const rand_a = n_rands->get_data_offset(ind*SIM_RAND_LENGTH, SIM_RAND_LENGTH);
for (u32_t b_ind = ind+1ul; b_ind < rand_count; b_ind++)
{
const u8_t * const rand_b = n_rands->get_data_offset(b_ind*SIM_RAND_LENGTH, SIM_RAND_LENGTH);
if (rand_a == 0
|| rand_b == 0
|| m_am_tools->memcmp(rand_a, rand_b, SIM_RAND_LENGTH) == 0)
{
// ERROR: Two equal RANDs.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_data_payload);
}
}
}
if (m_do_rand_uniqueness_check == true)
{
eap_status_e status = m_am_type_gsmsim->check_is_rand_unused(n_rands);
if (status != eap_status_ok)
{
// ERROR: RAND is used already.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_not_fresh_challenges);
}
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::query_SIM_kc_sres(
const eap_variable_data_c * const n_rands,
eap_variable_data_c * const n_kc,
eap_variable_data_c * const n_sres
)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);
eap_status_e status = eap_status_process_general_error;
status = check_rands(n_rands);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = m_n_rands.set_copy_of_buffer(n_rands);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
set_state(eap_type_gsmsim_state_pending_kc_sres_query);
status = m_am_type_gsmsim->query_SIM_kc_sres(
false,
n_rands,
n_kc,
n_sres);
if (status == eap_status_pending_request)
{
// This is pending query, that will be completed by complete_SIM_kc_sres() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_completed_request)
{
// This is already completed by complete_SIM_kc_sres() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status != eap_status_ok
&& status != eap_status_success)
{
// This is a error case.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
u32_t eap_type_gsmsim_c::get_mnc_length(const u32_t mcc)
{
u32_t * const mcc_array = reinterpret_cast<u32_t *>(m_2_digit_mnc_map_of_mcc_of_imsi_array.get_data(
m_2_digit_mnc_map_of_mcc_of_imsi_array.get_data_length()));
u32_t count = m_2_digit_mnc_map_of_mcc_of_imsi_array.get_data_length() / sizeof(u32_t);
for (u32_t ind = 0ul; ind < count; ind++)
{
if (mcc == mcc_array[ind])
{
return EAP_TYPE_GSMSIM_MNC_LENGTH_2_BYTES;
}
}
return EAP_TYPE_GSMSIM_DEFAULT_MNC_LENGTH_3_BYTES;
}
//--------------------------------------------------
eap_status_e eap_type_gsmsim_c::create_uma_realm(
eap_variable_data_c * const automatic_realm,
const eap_variable_data_c * const IMSI,
const u32_t length_of_mnc)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status(eap_status_ok);
// Create special automatic realm for UMA.
automatic_realm->reset();
if (m_use_uma_profile == true)
{
// Create special automatic realm for UMA.
automatic_realm->reset();
if (m_uma_automatic_realm_prefix.get_is_valid_data() == true)
{
status = automatic_realm->add_data(&m_uma_automatic_realm_prefix);
}
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (automatic_realm->get_data_length() > 0ul)
{
status = automatic_realm->add_data(GSMSIM_OWLAN_DOT_STRING, GSMSIM_OWLAN_DOT_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
status = automatic_realm->add_data(GSMSIM_OWLAN_MNC_STRING, GSMSIM_OWLAN_MNC_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// MNC part.
if (length_of_mnc == EAP_TYPE_GSMSIM_MNC_LENGTH_2_BYTES)
{
// Add zero digit.
u8_t zero = '0';
status = automatic_realm->add_data(&zero, sizeof(zero));
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
status = automatic_realm->add_data(IMSI->get_data_offset(EAP_TYPE_GSMSIM_MNC_OFFSET, length_of_mnc), length_of_mnc);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = automatic_realm->add_data(GSMSIM_OWLAN_DOT_STRING, GSMSIM_OWLAN_DOT_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = automatic_realm->add_data(GSMSIM_OWLAN_MCC_STRING, GSMSIM_OWLAN_MCC_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// MCC part is in index 0 and it is 3 bytes long.
status = automatic_realm->add_data(IMSI->get_data_offset(EAP_TYPE_GSMSIM_MCC_OFFSET, EAP_TYPE_GSMSIM_MCC_LENGTH), EAP_TYPE_GSMSIM_MCC_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = automatic_realm->add_data(GSMSIM_OWLAN_DOT_STRING, GSMSIM_OWLAN_DOT_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = automatic_realm->add_data(GSMSIM_OWLAN_ORG_STRING, GSMSIM_OWLAN_ORG_STRING_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query(
const eap_variable_data_c * const IMSI,
const eap_variable_data_c * const p_pseudonym_identity,
const eap_variable_data_c * const p_reauthentication_identity,
const eap_variable_data_c * const p_automatic_realm, ///< This could be zero pointer if this is not used.
const u32_t length_of_mnc,
const eap_type_gsmsim_complete_e required_completion,
const u8_t received_eap_identifier,
const eap_status_e completion_status
)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);
eap_status_e status = eap_status_process_general_error;
if (completion_status != eap_status_ok
|| IMSI == 0
|| p_pseudonym_identity == 0
|| p_reauthentication_identity == 0)
{
set_state(eap_type_gsmsim_state_failure);
// The eap_status_process_general_error error value is more important
// than return value of set_session_timeout().
get_type_partner()->set_session_timeout(0ul);
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
const eap_variable_data_c * local_pseudonym_identity = p_pseudonym_identity;
const eap_variable_data_c * local_reauthentication_identity = p_reauthentication_identity;
if (m_use_pseudonym_identity == false)
{
// We do not want use pseudonym identity.
local_pseudonym_identity = 0;
}
if (m_use_reauthentication_identity == false)
{
// We do not want use re-authentication identity.
local_reauthentication_identity = 0;
}
if (m_state != eap_type_gsmsim_state_pending_identity_query)
{
// Authentication is terminated or state is wrong. Cannot continue.
set_state(eap_type_gsmsim_state_failure);
// The eap_status_handler_does_not_exists_error error value is more important
// than return value of set_session_timeout().
get_type_partner()->set_session_timeout(0ul);
return EAP_STATUS_RETURN(m_am_tools, eap_status_handler_does_not_exists_error);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_variable_data_c local_automatic_realm(m_am_tools);
if (p_automatic_realm == 0
|| p_automatic_realm->get_is_valid_data() == false)
{
{
// Here we read the length of the MNC.
const u8_t * const MCC = IMSI->get_data_offset(EAP_TYPE_GSMSIM_MCC_OFFSET, EAP_TYPE_GSMSIM_MCC_LENGTH);
if (MCC == 0)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
u32_t MCC_value(0ul);
status = m_am_tools->number_string_to_u32(
MCC,
3ul,
&MCC_value);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_length_of_mnc = get_mnc_length(MCC_value);
}
status = create_uma_realm(&local_automatic_realm, IMSI, m_length_of_mnc);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (local_automatic_realm.get_is_valid() == true)
{
status = m_automatic_realm.set_copy_of_buffer(&local_automatic_realm);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
}
else
{
status = local_automatic_realm.set_copy_of_buffer(p_automatic_realm);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = m_automatic_realm.set_copy_of_buffer(p_automatic_realm);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_length_of_mnc = length_of_mnc;
}
m_automatic_realm_read = true;
// - - - - - - - - - - - - - - - - - - - - - - - -
if (required_completion == eap_type_gsmsim_complete_query_eap_identity)
{
status = handle_eap_identity_query(
&m_send_network_id,
0,
m_last_eap_identifier,
IMSI,
local_pseudonym_identity,
local_reauthentication_identity,
&local_automatic_realm,
m_length_of_mnc,
false);
if (status != eap_status_ok
&& status != eap_status_completed_request)
{
restore_saved_previous_state();
}
}
else if (required_completion == eap_type_gsmsim_complete_start_request)
{
if (local_reauthentication_identity != 0
&& local_reauthentication_identity->get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query reauthentication_identity\n")));
status = m_reauthentication_identity.set_copy_of_buffer(local_reauthentication_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_reauthentication_identity, false);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (local_pseudonym_identity != 0
&& local_pseudonym_identity->get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query pseudonym\n")));
m_reauthentication_identity.reset();
status = m_pseudonym.set_copy_of_buffer(local_pseudonym_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_pseudonym, false);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (IMSI->get_is_valid_data() == true
&& IMSI->get_data_length() >= EAP_TYPE_GSMSIM_MINIMUM_IMSI_LENGTH)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query IMSI\n")));
m_reauthentication_identity.reset();
m_pseudonym.reset();
status = m_IMSI.set_copy_of_buffer(IMSI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_IMSI, true);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
save_current_state();
set_state(eap_type_gsmsim_state_analyse_start_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query(0x%08x).\n"),
this));
// Here we swap the addresses.
eap_am_network_id_c receive_network_id(m_am_tools,
m_send_network_id.get_destination_id(),
m_send_network_id.get_source_id(),
m_send_network_id.get_type());
status = send_start_response_message(
&receive_network_id,
received_eap_identifier,
m_gsmsim_selected_version,
m_include_identity_to_start_response,
&local_automatic_realm,
m_length_of_mnc);
if (status == eap_status_ok)
{
}
else
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::complete_SIM_kc_sres(
const eap_variable_data_c * const n_rand,
const eap_variable_data_c * const n_kc,
const eap_variable_data_c * const n_sres,
const eap_status_e completion_status)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);
eap_status_e status = eap_status_process_general_error;
if (completion_status != eap_status_ok
|| n_rand == 0
|| n_kc == 0
|| n_sres == 0)
{
if (completion_status == eap_status_not_fresh_challenges)
{
(void) initialize_error_message(completion_status);
restore_saved_previous_state();
}
else
{
set_state(eap_type_gsmsim_state_failure);
// The eap_status_process_general_error error value is more important
// than return value of set_session_timeout().
get_type_partner()->set_session_timeout(0ul);
}
return EAP_STATUS_RETURN(m_am_tools, completion_status);
}
if (m_state != eap_type_gsmsim_state_pending_kc_sres_query)
{
// Authentication is terminated or state is wrong. Cannot continue.
set_state(eap_type_gsmsim_state_failure);
// The eap_status_handler_does_not_exists_error error value is more important
// than return value of set_session_timeout().
get_type_partner()->set_session_timeout(0ul);
return EAP_STATUS_RETURN(m_am_tools, eap_status_handler_does_not_exists_error);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
status = process_SIM_kc_sres(
n_rand,
n_kc,
n_sres);
if (status != eap_status_ok
&& status != eap_status_success)
{
(void) initialize_error_message(status);
restore_saved_previous_state();
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::process_SIM_kc_sres(
const eap_variable_data_c * const n_rand,
const eap_variable_data_c * const n_kc,
const eap_variable_data_c * const n_sres)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status = eap_status_process_general_error;
eap_variable_data_c MAC_RAND(m_am_tools);
if (m_state != eap_type_gsmsim_state_pending_kc_sres_query
|| n_rand == 0
|| n_kc == 0
|| n_sres == 0)
{
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
if (m_identity.get_is_valid_data() == false)
{
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_eap_identity);
}
if (m_nonce_mt.get_is_valid_data() == false)
{
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS, (EAPL("n*RAND"),
n_rand->get_data(),
n_rand->get_data_length()));
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("n*KC"),
n_kc->get_data(),
n_kc->get_data_length()));
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("n*SRES"),
n_sres->get_data(),
n_sres->get_data_length()));
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("identity"),
m_identity.get_data(),
m_identity.get_data_length()));
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("NONCE MT"),
m_nonce_mt.get_data(),
m_nonce_mt.get_data_length()));
status = m_n_sres.set_copy_of_buffer(n_sres);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
eap_variable_data_c XKEY(m_am_tools);
eap_variable_data_c K_encr(m_am_tools);
eap_variable_data_c K_aut(m_am_tools);
eap_variable_data_c master_session_key(m_am_tools);
status = generate_shared_secred_keys(
EAP_TYPE_GSMSIM_KEYMAT_SIZE,
n_kc,
n_sres,
&XKEY,
&K_encr,
&K_aut,
&master_session_key);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (m_saved_EAP_packet.get_is_valid_data() == true)
{
gsmsim_payloads_c * const l_gsmsim_payloads = new gsmsim_payloads_c(m_am_tools);
eap_automatic_variable_c<gsmsim_payloads_c> l_gsmsim_payloads_automatic(m_am_tools, l_gsmsim_payloads);
if (l_gsmsim_payloads == 0
|| l_gsmsim_payloads->get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
gsmsim_header_c saved_EAP_packet(
m_am_tools,
m_saved_EAP_packet.get_data(),
m_saved_EAP_packet.get_data_length());
if (saved_EAP_packet.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
status = parse_gsmsim_packet(
&saved_EAP_packet,
m_saved_EAP_packet.get_data_length(),
l_gsmsim_payloads);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = check_message_authentication_code(
&K_aut,
l_gsmsim_payloads,
&saved_EAP_packet,
saved_EAP_packet.get_length());
if (status != eap_status_ok)
{
(void) initialize_error_message(status);
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Decrypt and parse encrypted payload.
if (l_gsmsim_payloads->get_IV()->get_payload_included() == true
|| l_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == true)
{
if (l_gsmsim_payloads->get_IV()->get_payload_included() == true
&& l_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == true
&& l_gsmsim_payloads->get_MAC()->get_payload_included() == true)
{
status = decrypt_DATA_payload(
l_gsmsim_payloads,
&K_encr);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = handle_DATA_payload(
gsmsim_subtype_Challenge,
l_gsmsim_payloads);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// All of these must be included
// or none of these must be included.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
}
else
{
// No encrypted payload.
// GSMSIM AM should remove re-authentication identity from favourite place.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::process_SIM_kc_sres(0x%08x): Resets re-authentication identity from database.\n"),
this));
status = m_am_type_gsmsim->store_reauthentication_id(
&m_send_network_id,
0);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_reauthentication_identity.reset();
}
}
else
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
status = send_challenge_response_message(
&K_aut);
if (status != eap_status_ok)
{
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Store keys.
status = m_XKEY.set_copy_of_buffer(&XKEY);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = m_K_encr.set_copy_of_buffer(&K_encr);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = m_K_aut.set_copy_of_buffer(&K_aut);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = m_master_session_key.set_copy_of_buffer(&master_session_key);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// In order to use re-authentication, the client and the server need to
// store the following values: original XKEY, K_aut, K_encr, latest
// counter value and the next re-authentication identity.
status = m_am_type_gsmsim->store_reauth_parameters(
&XKEY,
&K_aut,
&K_encr,
EAP_TYPE_GSMSIM_INITIAL_REAUTH_COUNTER);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Authentication was successful.
if (m_use_result_indication == true)
{
// This version waits result indication.
if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_REAUTHENTICATION)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, re-authentication OK, waits result indication\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH)
{
if (m_identity_type == GSMSIM_IDENTITY_TYPE_PSEUDONYM_ID)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full authentication OK, pseudonym identity, waits result indication\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_identity_type == GSMSIM_IDENTITY_TYPE_IMSI_ID)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full authentication OK, IMSI identity, waits result indication\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_identity_type == GSMSIM_IDENTITY_TYPE_RE_AUTH_ID)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full authentication OK, Re-auth identity, waits result indication\n"),
(m_is_client == true) ? "client": "server"));
}
else
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR|TRACE_TEST_VECTORS,
(EAPL("ERROR: EAP_type_GSMSIM: %s, full authentication OK, unknown identity\n"),
(m_is_client == true) ? "client": "server"));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
}
else
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR|TRACE_TEST_VECTORS,
(EAPL("ERROR: EAP_type_GSMSIM: %s, unknown authentication OK, unknown identity\n"),
(m_is_client == true) ? "client": "server"));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
set_state(eap_type_gsmsim_state_waiting_for_notification_request_success);
}
else if (m_wait_eap_success_packet == false)
{
// This version does not wait EAP-Success message.
if (m_send_network_id.get_is_valid_data() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
// Here we swap the addresses.
eap_am_network_id_c receive_network_id(m_am_tools,
m_send_network_id.get_destination_id(),
m_send_network_id.get_source_id(),
m_send_network_id.get_type());
// This version does not wait EAP-Success message.
status = finish_successful_authentication(
&receive_network_id);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// This version waits the EAP-Success message.
if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_REAUTHENTICATION)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, re-authentication OK, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH)
{
if (m_identity_type == GSMSIM_IDENTITY_TYPE_PSEUDONYM_ID)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full authentication OK, pseudonym identity, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_identity_type == GSMSIM_IDENTITY_TYPE_IMSI_ID)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full authentication OK, IMSI identity, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_identity_type == GSMSIM_IDENTITY_TYPE_RE_AUTH_ID)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full authentication OK, Re-auth identity, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
else
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR|TRACE_TEST_VECTORS,
(EAPL("ERROR: EAP_type_GSMSIM: %s, full authentication OK, unknown identity, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
}
else
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR|TRACE_TEST_VECTORS,
(EAPL("ERROR: EAP_type_GSMSIM: %s, unknown authentication OK, unknown identity, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
set_state(eap_type_gsmsim_state_waiting_for_success);
status = eap_status_ok;
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::send_start_response_message(
const eap_am_network_id_c * const receive_network_id,
const u8_t received_eap_identifier,
const eap_gsmsim_version version,
const gsmsim_payload_AT_type_e include_identity_to_start_response,
const eap_variable_data_c * const automatic_realm, ///< This could be zero pointer if this is not used.
const u32_t /* length_of_mnc */
)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL(" send: GSMSIM-type %10s, %s, state %2d=%s\n"),
EAPL("gsmsim_subtype_Start"),
(m_is_client) ? EAPL("client") : EAPL("server"),
m_state,
get_state_string()
));
eap_buf_chain_wr_c gsmsim_initial_reply(
eap_write_buffer,
m_am_tools,
EAP_MAX_LOCAL_PACKET_BUFFER_LENGTH);
if (gsmsim_initial_reply.get_is_valid() == false)
{
EAP_TRACE_ERROR(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("packet buffer corrupted.\n")));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
if (m_is_client == true
&& m_client_responds_retransmitted_packets == true)
{
// We do not wan't lower layers do re-transmissions behalf of us.
// This means GSMSIM does process every re-transmitted EAP-Request.
gsmsim_initial_reply.set_do_packet_retransmission(false);
}
#endif //#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
EAP_ASSERT_ALWAYS(EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH >= (m_gsmsim_header_offset+m_trailer_length));
u32_t packet_buffer_free = EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH-m_trailer_length;
u32_t packet_buffer_offset = 0u;
if (m_gsmsim_header_offset+m_MTU < packet_buffer_free)
{
packet_buffer_free = m_gsmsim_header_offset+m_MTU;
}
gsmsim_header_c gsmsim_response(
m_am_tools,
gsmsim_initial_reply.get_data_offset(
m_gsmsim_header_offset,
(packet_buffer_free-m_gsmsim_header_offset)),
(packet_buffer_free-m_gsmsim_header_offset));
if (gsmsim_response.get_is_valid() == false)
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("packet_send: packet buffer corrupted.\n")));
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
// Here we swap the addresses.
eap_am_network_id_c send_network_id(m_am_tools,
receive_network_id->get_destination_id(),
receive_network_id->get_source_id(),
receive_network_id->get_type());
gsmsim_response.reset_header(
packet_buffer_free-m_gsmsim_header_offset,
m_use_eap_expanded_type);
gsmsim_response.set_length(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_code(eap_code_response);
gsmsim_response.set_identifier(received_eap_identifier);
gsmsim_response.set_type(
eap_type_gsmsim,
m_use_eap_expanded_type);
gsmsim_response.set_subtype(gsmsim_subtype_Start);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): include_identity_to_start_response %d=%s.\n"),
this,
include_identity_to_start_response,
gsmsim_payload_AT_header_c::get_payload_AT_string(include_identity_to_start_response)));
update_buffer_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
m_gsmsim_header_offset+gsmsim_response.get_header_length(),
&packet_buffer_offset,
&packet_buffer_free);
// - - - - - - - - - - - - - - - - - - - - - - - -
u32_t gsmsim_data_free = packet_buffer_free;
u32_t gsmsim_data_offset = 0u;
eap_status_e status = eap_status_process_general_error;
// - - - - - - - - - - - - - - - - - - - - - - - -
if (m_identity_type == GSMSIM_IDENTITY_TYPE_RE_AUTH_ID)
{
// Re-authentication identity MUST be removed after first use.
// GSMSIM AM should remove re-authentication identity from favourite place.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Resets re-authentication identity from database.\n"),
this));
status = m_am_type_gsmsim->store_reauthentication_id(
&m_send_network_id,
0);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Do not reset the local copy of re-authentocation identity.
}
if (include_identity_to_start_response == gsmsim_payload_AT_PERMANENT_ID_REQ)
{
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_IMSI_ID);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Selects full authentication and IMSI identity.\n"),
this));
}
else if (include_identity_to_start_response == gsmsim_payload_AT_FULLAUTH_ID_REQ)
{
eap_variable_data_c * const pseudonym = &m_pseudonym;
if (pseudonym->get_is_valid_data() == true)
{
// We have pseudonym.
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_PSEUDONYM_ID);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Selects full authentication and pseudonym identity.\n"),
this));
}
else // if (pseudonym->get_is_valid() == false)
{
// Because no pseudonym is available we must use IMSI.
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_IMSI_ID);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Selects full authentication and IMSI identity.\n"),
this));
}
}
else if (include_identity_to_start_response == gsmsim_payload_AT_ANY_ID_REQ)
{
eap_variable_data_c * const reauthentication_identity = &m_reauthentication_identity;
eap_variable_data_c * const pseudonym = &m_pseudonym;
if (reauthentication_identity->get_is_valid_data() == true)
{
// We have reauthentication identity. Re-authentication identity is NAI.
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_REAUTHENTICATION;
set_identity_type(GSMSIM_IDENTITY_TYPE_RE_AUTH_ID);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Selects fast re-authentication and re-authentication identity.\n"),
this));
}
else if (pseudonym->get_is_valid_data() == true)
{
// We have pseudonym.
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_PSEUDONYM_ID);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Selects full authentication and pseudonym identity.\n"),
this));
}
else if (m_IMSI.get_is_valid_data() == true)
{
// Because no pseudonym is available we must use IMSI.
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_IMSI_ID);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(0x%08x): Selects full authentication and IMSI identity.\n"),
this));
}
else
{
// ERROR, no identity available.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_eap_identity);
}
}
if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH)
{
status = add_variable_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
&m_nonce_mt,
gsmsim_payload_AT_NONCE_MT);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = add_version_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
version);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
if (include_identity_to_start_response != gsmsim_payload_NONE)
{
if (m_identity_type == GSMSIM_IDENTITY_TYPE_IMSI_ID)
{
eap_variable_data_c NAI(m_am_tools);
status = NAI.init(1u);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
NAI.set_is_valid();
status = generate_nai(
&NAI,
m_use_manual_realm,
get_nai_realm(),
&m_IMSI,
true,
&m_IMSI,
automatic_realm,
m_length_of_mnc);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = add_pseudonym_or_imsi_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
&NAI,
gsmsim_payload_AT_IDENTITY);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Save used NAI.
status = m_NAI.set_copy_of_buffer(&NAI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(): Client sends IMSI identity.\n")));
}
else if (m_identity_type == GSMSIM_IDENTITY_TYPE_PSEUDONYM_ID)
{
eap_variable_data_c * const pseudonym = &m_pseudonym;
if (pseudonym->get_is_valid_data() == true)
{
// We have pseudonym.
eap_variable_data_c NAI(m_am_tools);
status = NAI.init(1u);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
NAI.set_is_valid();
status = generate_nai(
&NAI,
m_use_manual_realm,
get_nai_realm(),
pseudonym,
false,
&m_IMSI,
automatic_realm,
m_length_of_mnc);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = add_pseudonym_or_imsi_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
&NAI,
gsmsim_payload_AT_IDENTITY);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Save used NAI.
status = m_NAI.set_copy_of_buffer(&NAI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(): Client sends pseudonym identity.\n")));
}
else // if (pseudonym->get_is_valid_data() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_eap_identity);
}
}
else if (m_identity_type == GSMSIM_IDENTITY_TYPE_RE_AUTH_ID)
{
eap_variable_data_c * const reauthentication_identity = &m_reauthentication_identity;
if (reauthentication_identity->get_is_valid_data() == true)
{
// We have reauthentication identity. Re-authentication identity is NAI.
status = add_pseudonym_or_imsi_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
reauthentication_identity,
gsmsim_payload_AT_IDENTITY);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Save used NAI.
status = m_NAI.set_copy_of_buffer(reauthentication_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_start_response_message(): Client sends re-authentication identity.\n")));
}
else
{
// ERROR, no identity available.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_eap_identity);
}
}
}
// - - - - - - - - - - - - - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
gsmsim_initial_reply.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
// - - - - - - - - - - - - - - - - - - - - - - - -
status = packet_send(
&send_network_id,
&gsmsim_initial_reply,
m_gsmsim_header_offset,
gsmsim_response.get_header_length()+gsmsim_response.get_data_length(),
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH
);
if (status == eap_status_ok)
{
if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_REAUTHENTICATION)
{
// Now we have on-going re-authentication.
set_state(eap_type_gsmsim_state_waiting_for_reauth_request);
}
else
{
// Now we have on-going full-authentication.
set_state(eap_type_gsmsim_state_waiting_for_challenge_request);
}
}
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::send_gsmsim_notification_response(
const eap_gsmsim_notification_codes_e notification_code,
const bool add_at_counter_attribute)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("send: GSMSIM-type %10s, %s, state %2d=%s\n"),
EAPL("send_gsmsim_notification_response"),
(m_is_client) ? EAPL("client") : EAPL("server"),
m_state,
get_state_string()
));
eap_buf_chain_wr_c eap_notification_packet(
eap_write_buffer,
m_am_tools,
EAP_MAX_LOCAL_PACKET_BUFFER_LENGTH);
if (eap_notification_packet.get_is_valid() == false)
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("packet buffer corrupted.\n")));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
if (m_is_client == true
&& m_client_responds_retransmitted_packets == true)
{
// We do not wan't lower layers do re-transmissions behalf of us.
// This means GSMSIM does process every re-transmitted EAP-Request.
eap_notification_packet.set_do_packet_retransmission(false);
}
#endif //#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
EAP_ASSERT_ALWAYS(EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH >= (m_gsmsim_header_offset+m_trailer_length));
u32_t packet_buffer_free = EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH-m_trailer_length;
u32_t packet_buffer_offset = 0u;
if (m_gsmsim_header_offset+m_MTU < packet_buffer_free)
{
packet_buffer_free = m_gsmsim_header_offset+m_MTU;
}
gsmsim_header_c gsmsim_response(
m_am_tools,
eap_notification_packet.get_data_offset(
m_gsmsim_header_offset,
(packet_buffer_free-m_gsmsim_header_offset)),
(packet_buffer_free-m_gsmsim_header_offset));
if (gsmsim_response.get_is_valid() == false)
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("packet_send: packet buffer corrupted.\n")));
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
gsmsim_response.reset_header(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_length(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_code(eap_code_response);
gsmsim_response.set_identifier(static_cast<u8_t>(m_last_eap_identifier));
gsmsim_response.set_type(
eap_type_gsmsim,
m_use_eap_expanded_type);
gsmsim_response.set_subtype(gsmsim_subtype_Notification);
update_buffer_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
m_gsmsim_header_offset+gsmsim_response.get_header_length(),
&packet_buffer_offset,
&packet_buffer_free);
// - - - - - - - - - - - - - - - - - - - - - - - -
u32_t gsmsim_data_free = packet_buffer_free;
u32_t gsmsim_data_offset = 0u;
eap_status_e status = eap_status_process_general_error;
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_variable_data_c * K_aut = 0;
eap_variable_data_c orig_K_aut(m_am_tools);
if (get_gsmsim_notification_code_P_bit(notification_code) == false)
{
u8_t *MAC_data = 0;
u32_t MAC_data_length = 0u;
eap_type_gsmsim_MAC_attributes_c MAC_attributes;
if (add_at_counter_attribute == true)
{
// If EAP-Request/SIM/Notification is used on fast a re-authentication
// exchange, and if the P bit in AT_NOTIFICATION is set to zero, then
// AT_COUNTER is used for replay protection. In this case, the
// AT_ENCR_DATA and AT_IV attributes MUST be included, and the
// encapsulated plaintext attributes MUST include the AT_COUNTER
// attribute. The counter value included in AT_COUNTER MUST be the same
// as in the EAP-Request/SIM/Re-authentication packet on the same fast
// re-authentication exchange.
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_variable_data_c orig_XKEY(m_am_tools);
eap_variable_data_c orig_K_encr(m_am_tools);
u32_t reauth_counter = 0u;
// In order to use re-authentication, the client and the server need to
// store the following values: original XKEY, K_aut, K_encr, latest
// counter value and the next re-authentication identity.
status = m_am_type_gsmsim->query_reauth_parameters(
&orig_XKEY,
&orig_K_aut,
&orig_K_encr,
&reauth_counter);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_gsmsim_notification_response(): %s, m_saved_reauth_counter %d.\n"),
(m_is_client == true ? "client": "server"),
reauth_counter));
K_aut = &orig_K_aut;
// - - - - - - - - - - - -
crypto_aes_c aes(m_am_tools);
if (aes.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
status = m_am_type_gsmsim->generate_encryption_IV(
m_IV.get_payload_buffer(),
aes.get_block_size());
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = add_variable_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
m_IV.get_payload_buffer(),
gsmsim_payload_AT_IV);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Encrypted data.
{
gsmsim_payload_AT_header_c gp_encrypted_data(
m_am_tools,
gsmsim_response.get_data_offset(
gsmsim_data_offset,
gsmsim_data_free),
gsmsim_data_free);
if (gsmsim_response.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
}
// Initialize the length of encrypted data to maximum length.
// Later this will be set to correct length.
gp_encrypted_data.reset_header(gsmsim_payload_AT_header_c::get_max_payload_data_length());
gp_encrypted_data.set_current_payload(gsmsim_payload_AT_ENCR_DATA);
update_payload_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
gp_encrypted_data.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_offset,
&packet_buffer_free);
u32_t encrypted_data_offset_begin = packet_buffer_offset;
// - - - - - - - - - - - -
status = add_counter_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
static_cast<u16_t>(reauth_counter));
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - -
status = add_padding_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
(packet_buffer_offset - encrypted_data_offset_begin) // Length of the plain text.
);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
gp_encrypted_data.set_data_length(
static_cast<u16_t>(packet_buffer_offset - encrypted_data_offset_begin));
// - - - - - - - - - - - -
status = encrypt_DATA_payload(
gp_encrypted_data.get_data(gp_encrypted_data.get_data_length()),
gp_encrypted_data.get_data_length(),
m_IV.get_payload_buffer(),
&orig_K_encr);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_GSMSIM_TRACE_PAYLOAD("Payload added", &gp_encrypted_data);
}
}
else
{
K_aut = &m_K_aut;
} // if (add_counter_payload == true)
// - - - - - - - - - - - -
// Add AT_MAC attribute.
status = add_mac_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
&MAC_data,
&MAC_data_length);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
eap_notification_packet.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
// - - - - - - - - - - - -
MAC_attributes.init(
MAC_data,
MAC_data_length,
gsmsim_response.get_header_buffer(gsmsim_response.get_length()),
gsmsim_response.get_length());
status = create_message_authentication_code(
&MAC_attributes,
gsmsim_response.get_subtype(),
gsmsim_response.get_code(),
K_aut);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
eap_notification_packet.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_notification_packet.set_data_length(packet_buffer_offset);
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL(" send: EAP-Response/Notification packet"),
gsmsim_response.get_header_buffer(gsmsim_response.get_length()),
gsmsim_response.get_length()));
status = packet_send(
&m_send_network_id,
&eap_notification_packet,
m_gsmsim_header_offset,
gsmsim_response.get_length(),
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH
);
if (status == eap_status_ok)
{
}
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::send_gsmsim_client_error_response()
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: send: GSMSIM-type %10s, %s, state %2d=%s, m_client_error_code %d\n"),
EAPL("send_gsmsim_client_error_response"),
(m_is_client) ? EAPL("client") : EAPL("server"),
m_state,
get_state_string(),
m_client_error_code
));
eap_buf_chain_wr_c eap_client_error_packet(
eap_write_buffer,
m_am_tools,
EAP_MAX_LOCAL_PACKET_BUFFER_LENGTH);
if (eap_client_error_packet.get_is_valid() == false)
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("packet buffer corrupted.\n")));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
if (m_is_client == true
&& m_client_responds_retransmitted_packets == true)
{
// We do not wan't lower layers do re-transmissions behalf of us.
// This means GSMSIM does process every re-transmitted EAP-Request.
eap_client_error_packet.set_do_packet_retransmission(false);
}
#endif //#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
EAP_ASSERT_ALWAYS(EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH >= (m_gsmsim_header_offset+m_trailer_length));
u32_t packet_buffer_free = EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH-m_trailer_length;
u32_t packet_buffer_offset = 0u;
if (m_gsmsim_header_offset+m_MTU < packet_buffer_free)
{
packet_buffer_free = m_gsmsim_header_offset+m_MTU;
}
gsmsim_header_c gsmsim_response(
m_am_tools,
eap_client_error_packet.get_data_offset(
m_gsmsim_header_offset,
(packet_buffer_free-m_gsmsim_header_offset)),
(packet_buffer_free-m_gsmsim_header_offset));
if (gsmsim_response.get_is_valid() == false)
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("packet_send: packet buffer corrupted.\n")));
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
gsmsim_response.reset_header(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_length(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_code(eap_code_response);
gsmsim_response.set_identifier(static_cast<u8_t>(m_last_eap_identifier));
gsmsim_response.set_type(
eap_type_gsmsim,
m_use_eap_expanded_type);
gsmsim_response.set_subtype(gsmsim_subtype_Client_Error);
update_buffer_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
m_gsmsim_header_offset+gsmsim_response.get_header_length(),
&packet_buffer_offset,
&packet_buffer_free);
// - - - - - - - - - - - - - - - - - - - - - - - -
u32_t gsmsim_data_free = packet_buffer_free;
u32_t gsmsim_data_offset = 0u;
eap_status_e status = add_client_error_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
m_client_error_code);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
eap_client_error_packet.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
status = eap_status_process_general_error;
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_client_error_packet.set_data_length(packet_buffer_offset);
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL(" send: EAP-Response/Client-Error packet"),
gsmsim_response.get_header_buffer(gsmsim_response.get_length()),
gsmsim_response.get_length()));
status = packet_send(
&m_send_network_id,
&eap_client_error_packet,
m_gsmsim_header_offset,
gsmsim_response.get_length(),
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH
);
if (status == eap_status_ok)
{
}
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::send_challenge_response_message(
eap_variable_data_c * const K_aut)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL(" send: GSMSIM-type %10s, %s, state %2d=%s\n"),
EAPL("gsmsim_subtype_Challenge"),
(m_is_client) ? EAPL("client") : EAPL("server"),
m_state,
get_state_string()
));
eap_buf_chain_wr_c gsmsim_initial_reply(
eap_write_buffer,
m_am_tools,
EAP_MAX_LOCAL_PACKET_BUFFER_LENGTH);
if (gsmsim_initial_reply.get_is_valid() == false)
{
EAP_TRACE_ERROR(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("packet buffer corrupted.\n")));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
if (m_is_client == true
&& m_client_responds_retransmitted_packets == true)
{
// We do not wan't lower layers do re-transmissions behalf of us.
// This means GSMSIM does process every re-transmitted EAP-Request.
gsmsim_initial_reply.set_do_packet_retransmission(false);
}
#endif //#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
EAP_ASSERT_ALWAYS(EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH >= (m_gsmsim_header_offset+m_trailer_length));
u32_t packet_buffer_free = EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH-m_trailer_length;
u32_t packet_buffer_offset = 0u;
if (m_gsmsim_header_offset+m_MTU < packet_buffer_free)
{
packet_buffer_free = m_gsmsim_header_offset+m_MTU;
}
gsmsim_header_c gsmsim_response(
m_am_tools,
gsmsim_initial_reply.get_data_offset(
m_gsmsim_header_offset,
(packet_buffer_free-m_gsmsim_header_offset)),
(packet_buffer_free-m_gsmsim_header_offset));
if (gsmsim_response.get_is_valid() == false)
{
EAP_TRACE_ERROR(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("packet_send: packet buffer corrupted.\n")));
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
gsmsim_response.reset_header(
packet_buffer_free,
m_use_eap_expanded_type);
gsmsim_response.set_length(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_code(eap_code_response);
gsmsim_response.set_identifier(m_last_eap_identifier);
gsmsim_response.set_type(
eap_type_gsmsim,
m_use_eap_expanded_type);
gsmsim_response.set_subtype(gsmsim_subtype_Challenge);
update_buffer_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
m_gsmsim_header_offset+gsmsim_response.get_header_length(),
&packet_buffer_offset,
&packet_buffer_free);
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("eap_type_gsmsim_c::send_challenge_response_message(0x%08x).\n"),
this));
// - - - - - - - - - - - - - - - - - - - - - - - -
u32_t gsmsim_data_free = packet_buffer_free;
u32_t gsmsim_data_offset = 0u;
eap_status_e status = eap_status_process_general_error;
u8_t *MAC_data = 0;
u32_t MAC_data_length = 0u;
eap_type_gsmsim_MAC_attributes_c MAC_attributes;
// - - - - - - - - - - - - - - - - - - - - - - - -
if (m_use_result_indication == true)
{
// We support use of protected success indications.
status = add_simple_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
gsmsim_payload_AT_RESULT_IND);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
// - - - - - - - - - - - -
status = add_mac_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
&MAC_data,
&MAC_data_length);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
gsmsim_initial_reply.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
// - - - - - - - - - - - -
MAC_attributes.init(
MAC_data,
MAC_data_length,
gsmsim_response.get_header_buffer(gsmsim_response.get_length()),
gsmsim_response.get_length());
status = create_message_authentication_code(
&MAC_attributes,
gsmsim_response.get_subtype(),
gsmsim_response.get_code(),
K_aut);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
gsmsim_initial_reply.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
// - - - - - - - - - - - - - - - - - - - - - - - -
status = packet_send(
&m_send_network_id,
&gsmsim_initial_reply,
m_gsmsim_header_offset,
gsmsim_response.get_header_length()+gsmsim_response.get_data_length(),
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH
);
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::send_reauthentication_response_message(
const eap_variable_data_c * const orig_XKEY,
const eap_variable_data_c * const orig_K_aut,
const eap_variable_data_c * const orig_K_encr,
const eap_variable_data_c * const reauth_username,
const eap_variable_data_c * const reauth_nonce_s,
const u16_t reauth_counter,
const u8_t eap_identifier,
const bool include_at_counter_too_small)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL(" send: GSMSIM-subtype %10s, %s, state %2d=%s\n"),
EAPL("gsmsim_subtype_Re_authentication"),
EAPL("client"),
m_state,
get_state_string()
));
eap_status_e status = eap_status_process_general_error;
eap_buf_chain_wr_c request_packet(
eap_write_buffer,
m_am_tools,
EAP_MAX_LOCAL_PACKET_BUFFER_LENGTH);
if (request_packet.get_is_valid() == false)
{
EAP_TRACE_ERROR(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("packet buffer corrupted.\n")));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
if (m_is_client == true
&& m_client_responds_retransmitted_packets == true)
{
// We do not wan't lower layers do re-transmissions behalf of us.
// This means GSMSIM does process every re-transmitted EAP-Request.
request_packet.set_do_packet_retransmission(false);
}
#endif //#if defined(USE_EAP_TYPE_GSMSIM_OWN_RE_TRANSMISSION)
EAP_ASSERT_ALWAYS(EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH >= (m_gsmsim_header_offset+m_trailer_length));
u32_t packet_buffer_free = EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH-m_trailer_length;
u32_t packet_buffer_offset = 0u;
if (m_gsmsim_header_offset+m_MTU < packet_buffer_free)
{
packet_buffer_free = m_gsmsim_header_offset+m_MTU;
}
gsmsim_header_c gsmsim_response(
m_am_tools,
request_packet.get_data_offset(
m_gsmsim_header_offset,
(packet_buffer_free-m_gsmsim_header_offset)),
(packet_buffer_free-m_gsmsim_header_offset));
if (gsmsim_response.get_is_valid() == false)
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("send_reauthentication_response_message: packet buffer corrupted.\n")));
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
gsmsim_response.reset_header(
packet_buffer_free-m_gsmsim_header_offset,
m_use_eap_expanded_type);
gsmsim_response.set_length(
static_cast<u16_t>(packet_buffer_free-m_gsmsim_header_offset),
m_use_eap_expanded_type);
gsmsim_response.set_code(eap_code_response);
gsmsim_response.set_identifier(eap_identifier);
gsmsim_response.set_type(
eap_type_gsmsim,
m_use_eap_expanded_type);
gsmsim_response.set_subtype(gsmsim_subtype_Re_authentication);
update_buffer_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
m_gsmsim_header_offset+gsmsim_response.get_header_length(),
&packet_buffer_offset,
&packet_buffer_free);
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_reauthentication_response_message(0x%08x).\n"),
this));
// - - - - - - - - - - - - - - - - - - - - - - - -
u32_t gsmsim_data_free = packet_buffer_free;
u32_t gsmsim_data_offset = 0u;
eap_variable_data_c master_session_key(m_am_tools);
status = generate_reauth_shared_secred_keys(
EAP_TYPE_GSMSIM_KEYMAT_SIZE,
orig_XKEY,
reauth_counter,
reauth_username,
reauth_nonce_s,
&master_session_key);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - -
if (m_use_result_indication == true)
{
// We support use of protected success indications.
status = add_simple_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
gsmsim_payload_AT_RESULT_IND);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
// - - - - - - - - - - - -
crypto_aes_c aes(m_am_tools);
if (aes.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
status = m_am_type_gsmsim->generate_encryption_IV(
m_IV.get_payload_buffer(),
aes.get_block_size());
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = add_variable_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
m_IV.get_payload_buffer(),
gsmsim_payload_AT_IV);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
u8_t *MAC_data = 0;
u32_t MAC_data_length = 0u;
eap_type_gsmsim_MAC_attributes_c MAC_attributes;
// Encrypted data.
{
gsmsim_payload_AT_header_c gp_encrypted_data(
m_am_tools,
gsmsim_response.get_data_offset(
gsmsim_data_offset,
gsmsim_data_free),
gsmsim_data_free);
if (gp_encrypted_data.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
}
// Initialize the length of encrypted data to maximum length.
// Later this will be set to correct length.
gp_encrypted_data.reset_header(gsmsim_payload_AT_header_c::get_max_payload_data_length());
gp_encrypted_data.set_current_payload(gsmsim_payload_AT_ENCR_DATA);
update_payload_indexes(
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
gp_encrypted_data.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_offset,
&packet_buffer_free);
u32_t encrypted_data_offset_begin = packet_buffer_offset;
// - - - - - - - - - - - -
if (include_at_counter_too_small == true)
{
status = add_simple_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
gsmsim_payload_AT_COUNTER_TOO_SMALL);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
// - - - - - - - - - - - -
status = add_counter_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
reauth_counter);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - -
status = add_padding_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
(packet_buffer_offset - encrypted_data_offset_begin) // Length of the plain text.
);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
gp_encrypted_data.set_data_length(
static_cast<u16_t>(packet_buffer_offset - encrypted_data_offset_begin));
// - - - - - - - - - - - -
status = encrypt_DATA_payload(
gp_encrypted_data.get_data(gp_encrypted_data.get_data_length()),
gp_encrypted_data.get_data_length(),
m_IV.get_payload_buffer(),
orig_K_encr);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_GSMSIM_TRACE_PAYLOAD("Payload added", &gp_encrypted_data);
}
// - - - - - - - - - - - -
status = add_mac_payload(
&gsmsim_response,
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH,
gsmsim_response.get_header_length(),
&gsmsim_data_offset,
&gsmsim_data_free,
&packet_buffer_free,
&packet_buffer_offset,
&MAC_data,
&MAC_data_length);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
request_packet.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
// - - - - - - - - - - - -
MAC_attributes.init(
MAC_data,
MAC_data_length,
gsmsim_response.get_header_buffer(gsmsim_response.get_length()),
gsmsim_response.get_length());
status = create_message_authentication_code(
&MAC_attributes,
gsmsim_response.get_subtype(),
gsmsim_response.get_code(),
orig_K_aut);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// - - - - - - - - - - - - - - - - - - - - - - - -
gsmsim_response.set_data_length(
gsmsim_data_offset,
m_use_eap_expanded_type);
request_packet.set_data_length(packet_buffer_offset);
EAP_ASSERT_ALWAYS(
m_gsmsim_header_offset+gsmsim_response.get_header_length()+gsmsim_response.get_data_length()
== packet_buffer_offset);
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::send_reauthentication_request_message()\n")));
status = packet_send(
&m_send_network_id,
&request_packet,
m_gsmsim_header_offset,
gsmsim_response.get_header_length()+gsmsim_response.get_data_length(),
EAP_TYPE_GSMSIM_LOCAL_PACKET_BUFFER_LENGTH
);
if (status == eap_status_ok)
{
if (include_at_counter_too_small == false)
{
status = m_master_session_key.set_copy_of_buffer(&master_session_key);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (include_at_counter_too_small == true)
{
// The full authentication must follow.
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
}
}
// - - - - - - - - - - - - - - - - - - - - - - - -
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::decrypt_DATA_payload(
gsmsim_payloads_c * const p_gsmsim_payloads,
const eap_variable_data_c * const encryption_key
)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status = eap_status_process_general_error;
crypto_aes_c aes(m_am_tools);
crypto_cbc_c cbc_aes(m_am_tools, &aes, false);
if (cbc_aes.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
if (cbc_aes.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
u32_t aes_key_length = aes.get_key_length();
if (encryption_key->get_data_length() < aes_key_length)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_key_error);
}
if (p_gsmsim_payloads->get_ENCR_DATA()->get_data_length() == 0
|| (p_gsmsim_payloads->get_ENCR_DATA()->get_data_length() % aes_key_length) != 0)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_key_error);
}
if (p_gsmsim_payloads->get_IV()->get_payload_included() == false
|| p_gsmsim_payloads->get_IV()->get_data_length() == 0u
|| encryption_key->get_is_valid_data() == false
|| encryption_key->get_data_length() == 0u)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_key_error);
}
if (p_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == false
|| p_gsmsim_payloads->get_ENCR_DATA()->get_data_length() == 0u)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_data_payload);
}
status = cbc_aes.set_decryption_key(
p_gsmsim_payloads->get_IV()->get_data(p_gsmsim_payloads->get_IV()->get_data_length()),
p_gsmsim_payloads->get_IV()->get_data_length(),
encryption_key->get_data(),
aes_key_length);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = cbc_aes.decrypt_data(
p_gsmsim_payloads->get_ENCR_DATA()->get_data(p_gsmsim_payloads->get_ENCR_DATA()->get_data_length()),
p_gsmsim_payloads->get_ENCR_DATA()->get_data_length());
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_DATA_payload(
const gsmsim_subtype_e subtype,
gsmsim_payloads_c * const p_gsmsim_payloads
)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status = eap_status_process_general_error;
if (p_gsmsim_payloads->get_ENCR_DATA() == 0
|| p_gsmsim_payloads->get_ENCR_DATA()->get_data_length() == 0u)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
u32_t state_payload_buffer_length = p_gsmsim_payloads->get_ENCR_DATA()->get_data_length();
const gsmsim_payload_AT_header_c gp_data_payload(
m_am_tools,
p_gsmsim_payloads->get_ENCR_DATA()->get_data(state_payload_buffer_length),
state_payload_buffer_length);
if (gp_data_payload.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
status = parse_gsmsim_payload(
&gp_data_payload,
&state_payload_buffer_length,
p_gsmsim_payloads,
subtype);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (p_gsmsim_payloads->get_NEXT_PSEUDONYM()->get_payload_included() == true)
{
if (p_gsmsim_payloads->get_padding_payload()->get_payload_included() == true
&& p_gsmsim_payloads->get_padding_payload()->get_data_length() > 0u)
{
crypto_aes_c aes(m_am_tools);
crypto_cbc_c cbc_aes(m_am_tools, &aes, false);
if (cbc_aes.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
// Check the padding bytes.
// Must be filled with zero (0x00) bytes.
status = cbc_aes.check_padding_bytes(
p_gsmsim_payloads->get_padding_payload()->get_data(p_gsmsim_payloads->get_padding_payload()->get_data_length()),
p_gsmsim_payloads->get_padding_payload()->get_data_length(),
0ul);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
// GSMSIM AM could store pseudonym to favourite place.
status = m_am_type_gsmsim->store_pseudonym_id(
&m_send_network_id,
p_gsmsim_payloads->get_NEXT_PSEUDONYM()->get_payload_buffer());
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
if (p_gsmsim_payloads->get_NEXT_REAUTH_ID()->get_payload_included() == true)
{
if (p_gsmsim_payloads->get_padding_payload()->get_payload_included() == true
&& p_gsmsim_payloads->get_padding_payload()->get_data_length() > 0u)
{
crypto_aes_c aes(m_am_tools);
crypto_cbc_c cbc_aes(m_am_tools, &aes, false);
if (cbc_aes.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
// Check the padding bytes.
// Must be filled with zero (0x00) bytes.
status = cbc_aes.check_padding_bytes(
p_gsmsim_payloads->get_padding_payload()->get_data(p_gsmsim_payloads->get_padding_payload()->get_data_length()),
p_gsmsim_payloads->get_padding_payload()->get_data_length(),
0ul);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
// GSMSIM AM could store pseudonym to favourite place.
status = m_am_type_gsmsim->store_reauthentication_id(
&m_send_network_id,
p_gsmsim_payloads->get_NEXT_REAUTH_ID()->get_payload_buffer());
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// GSMSIM AM should remove re-authentication identity from favourite place.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_DATA_payload(0x%08x): Resets re-authentication identity from database.\n"),
this));
status = m_am_type_gsmsim->store_reauthentication_id(
&m_send_network_id,
0);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_reauthentication_identity.reset();
}
status = eap_status_ok;
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_start_request_message(
const eap_am_network_id_c * const receive_network_id,
gsmsim_header_c * const received_gsmsim,
const u32_t /* gsmsim_packet_length */,
gsmsim_payloads_c * const p_gsmsim_payloads)
{
eap_status_e status = eap_status_process_general_error;
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
const eap_type_gsmsim_state_variable_e gsmsim_start_request_states[] =
{
eap_type_gsmsim_state_waiting_for_start_request,
eap_type_gsmsim_state_pseydonym_waiting_for_start_request,
eap_type_gsmsim_state_imsi_waiting_for_start_request,
eap_type_gsmsim_state_waiting_for_challenge_request,
eap_type_gsmsim_state_waiting_for_reauth_request,
};
if (verify_states(gsmsim_start_request_states, GSMSIM_STATE_COUNT(gsmsim_start_request_states)) == true)
#else
if (m_state == eap_type_gsmsim_state_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_pseydonym_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_imsi_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_waiting_for_challenge_request
|| m_state == eap_type_gsmsim_state_waiting_for_reauth_request)
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// This could be first or retransmission request.
// Checks the payloads existence.
if (p_gsmsim_payloads->check_payloads(
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_mt
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_s
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // MAC
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ENCR_DATA
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IDENTITY
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // padding
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // n_RANDs
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // PERMANENT_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // FULLAUTH_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // ANY_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IV
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_PSEUDONYM
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_REAUTH_ID
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NOTIFICATION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // VERSION_LIST
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // SELECTED_VERSION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER_TOO_SMALL
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // CLIENT_ERROR_CODE
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be // RESULT_IND
) == true
)
{
// NOTE, this message is unauthenticated. Anybody could sent this message.
bool includes_other_version_than_1 = false;
eap_gsmsim_version selected_version = select_version(
p_gsmsim_payloads->get_VERSION_LIST(),
&includes_other_version_than_1);
if (selected_version == GSMSIM_ILLEGAL_VERSION)
{
// ERROR, no supported version.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_start_request_message(0x%08x), illegal version list.\n"),
this));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_no_matching_protocol_version);
}
if (p_gsmsim_payloads->get_includes_unknown_attribute() != gsmsim_payload_NONE
&& includes_other_version_than_1 == false)
{
// EAP-SIM version 1 must NOT include unknown attributes.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_start_request_message(0x%08x), illegal payload %d=0x%04x.\n"),
this,
p_gsmsim_payloads->get_includes_unknown_attribute(),
p_gsmsim_payloads->get_includes_unknown_attribute()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
gsmsim_payload_AT_type_e include_identity_to_start_response = gsmsim_payload_NONE;
{
if ((p_gsmsim_payloads->get_PERMANENT_ID_REQ()->get_payload_included() == true
&& p_gsmsim_payloads->get_FULLAUTH_ID_REQ()->get_payload_included() == true)
|| (p_gsmsim_payloads->get_PERMANENT_ID_REQ()->get_payload_included() == true
&& p_gsmsim_payloads->get_ANY_ID_REQ()->get_payload_included() == true)
|| (p_gsmsim_payloads->get_FULLAUTH_ID_REQ()->get_payload_included() == true
&& p_gsmsim_payloads->get_ANY_ID_REQ()->get_payload_included() == true))
{
// Only one of these is allowed.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_start_request_message(0x%08x), illegal payloads.\n"),
this));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
else if (p_gsmsim_payloads->get_PERMANENT_ID_REQ()->get_payload_included() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("gsmsim_payload_AT_PERMANENT_ID_REQ\n")));
// Note, this is optional, included only when pseudonym decode failed in server.
include_identity_to_start_response = gsmsim_payload_AT_PERMANENT_ID_REQ;
}
else if (p_gsmsim_payloads->get_FULLAUTH_ID_REQ()->get_payload_included() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("gsmsim_payload_AT_FULLAUTH_ID_REQ\n")));
// Note, this is optional, included only when reauthentication identity decode failed in server.
include_identity_to_start_response = gsmsim_payload_AT_FULLAUTH_ID_REQ;
}
else if (p_gsmsim_payloads->get_ANY_ID_REQ()->get_payload_included() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("gsmsim_payload_AT_ANY_ID_REQ\n")));
// Note, this is optional, included only when server have no identity of client.
include_identity_to_start_response = gsmsim_payload_AT_ANY_ID_REQ;
}
}
if (m_nonce_mt.get_is_valid_data() == false)
{
// Note, if this message is retransmitted request the NONCE_MT
// is already generated.
status = generate_nonce(EAP_TYPE_GSMSIM_NONCE_MT_SIZE, &m_nonce_mt);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
u32_t version_payload_length = p_gsmsim_payloads->get_VERSION_LIST()->get_original_header()->get_data_length();
u32_t real_payload_length = p_gsmsim_payloads->get_VERSION_LIST()->get_original_header()->get_reserved();
if (real_payload_length == 0
|| real_payload_length > version_payload_length)
{
return EAP_STATUS_RETURN(m_am_tools, eap_status_no_matching_protocol_version);
}
u32_t version_count = real_payload_length/sizeof(u16_t);
u16_t *payload_version_list = reinterpret_cast<u16_t *>(p_gsmsim_payloads->get_VERSION_LIST()
->get_original_header()->get_data(real_payload_length));
status = save_version(payload_version_list, version_count, selected_version);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_include_identity_to_start_response = include_identity_to_start_response;
if (include_identity_to_start_response == gsmsim_payload_NONE
&& (m_identity.get_is_valid_data() == false))
{
// We must query the previous sent EAP-Identity from EAP_Core.
// The EAP_Core saves the sent EAP-Identity when the EAP-Identity is
// sent to the network.
// Previous EAP-type was NOT this instance. EAP-Identity was queried from other instance.
status = get_type_partner()->get_saved_eap_identity(&m_identity);
if (status != eap_status_ok)
{
// We do not have the identity server accepted anymore.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = m_NAI.set_copy_of_buffer(&m_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
if (include_identity_to_start_response == gsmsim_payload_AT_ANY_ID_REQ
&& (m_reauthentication_identity.get_is_valid_data() == false
&& m_pseudonym.get_is_valid_data() == false
&& m_IMSI.get_is_valid_data() == false
&& m_automatic_realm_read == false))
{
eap_variable_data_c IMSI(m_am_tools);
eap_variable_data_c pseudonym(m_am_tools);
eap_variable_data_c reauthentication_identity(m_am_tools);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("gsmsim_payload_AT_ANY_ID_REQ\n")));
status = query_SIM_IMSI_or_pseudonym_or_reauthentication_id(
&IMSI,
&pseudonym,
&reauthentication_identity,
&m_automatic_realm,
&m_length_of_mnc,
false,
include_identity_to_start_response,
eap_type_gsmsim_complete_start_request,
received_gsmsim->get_identifier());
if (status == eap_status_pending_request)
{
// This is pending query, that will be completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_completed_request)
{
// This is already completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("completed returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
status = eap_status_ok;
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status != eap_status_ok)
{
// This is the error case.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("error returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (reauthentication_identity.get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("reauthentication_identity\n")));
status = m_reauthentication_identity.set_copy_of_buffer(&reauthentication_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_reauthentication_identity, false);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (pseudonym.get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message pseudonym\n")));
m_reauthentication_identity.reset();
status = m_pseudonym.set_copy_of_buffer(&pseudonym);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_pseudonym, false);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (IMSI.get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message IMSI\n")));
m_reauthentication_identity.reset();
m_pseudonym.reset();
status = m_IMSI.set_copy_of_buffer(&IMSI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_IMSI, true);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
}
else if (include_identity_to_start_response == gsmsim_payload_AT_FULLAUTH_ID_REQ
&& (m_pseudonym.get_is_valid_data() == false
&& m_IMSI.get_is_valid_data() == false
&& m_automatic_realm_read == false))
{
eap_variable_data_c IMSI(m_am_tools);
eap_variable_data_c pseudonym(m_am_tools);
eap_variable_data_c reauthentication_identity(m_am_tools);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("gsmsim_payload_AT_FULLAUTH_ID_REQ\n")));
status = query_SIM_IMSI_or_pseudonym_or_reauthentication_id(
&IMSI,
&pseudonym,
&reauthentication_identity,
&m_automatic_realm,
&m_length_of_mnc,
false,
include_identity_to_start_response,
eap_type_gsmsim_complete_start_request,
received_gsmsim->get_identifier());
if (status == eap_status_pending_request)
{
// This is pending query, that will be completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_completed_request)
{
// This is already completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("completed returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
status = eap_status_ok;
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status != eap_status_ok)
{
// This is the error case.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("error returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (pseudonym.get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message pseudonym\n")));
m_reauthentication_identity.reset();
status = m_pseudonym.set_copy_of_buffer(&pseudonym);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_pseudonym, false);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (IMSI.get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message IMSI\n")));
m_reauthentication_identity.reset();
m_pseudonym.reset();
status = m_IMSI.set_copy_of_buffer(&IMSI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_IMSI, true);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
}
else if (include_identity_to_start_response == gsmsim_payload_AT_PERMANENT_ID_REQ
&& m_IMSI.get_is_valid_data() == false
&& m_automatic_realm_read == false)
{
eap_variable_data_c IMSI(m_am_tools);
eap_variable_data_c pseudonym(m_am_tools);
eap_variable_data_c reauthentication_identity(m_am_tools);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message ")
EAPL("gsmsim_payload_AT_PERMANENT_ID_REQ\n")));
status = query_SIM_IMSI_or_pseudonym_or_reauthentication_id(
&IMSI,
&pseudonym,
&reauthentication_identity,
&m_automatic_realm,
&m_length_of_mnc,
false,
include_identity_to_start_response,
eap_type_gsmsim_complete_start_request,
received_gsmsim->get_identifier());
if (status == eap_status_pending_request)
{
// This is pending query, that will be completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_completed_request)
{
// This is already completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("completed returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
status = eap_status_ok;
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status != eap_status_ok)
{
// This is the error case.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("error returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (IMSI.get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message IMSI\n")));
m_reauthentication_identity.reset();
m_pseudonym.reset();
status = m_IMSI.set_copy_of_buffer(&IMSI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(&m_IMSI, true);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
save_current_state();
set_state(eap_type_gsmsim_state_analyse_start_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_start_request_message(0x%08x).\n"),
this));
status = send_start_response_message(
receive_network_id,
received_gsmsim->get_identifier(),
selected_version,
include_identity_to_start_response,
&m_automatic_realm,
m_length_of_mnc);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// Not correct GSMSIM-payloads are included.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_start_request_message(1): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
}
else
{
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_start_request_message(): ")
EAPL("Wrong message %d=%s in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_gsmsim_notification_request_message_reauthentication(
const eap_am_network_id_c * const receive_network_id,
gsmsim_header_c * const received_gsmsim,
const u32_t /*gsmsim_packet_length*/,
gsmsim_payloads_c * const p_gsmsim_payloads)
{
eap_status_e status = eap_status_process_general_error;
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("send: GSMSIM-type %10s, %s, state %2d=%s\n"),
EAPL("handle_gsmsim_notification_request_message_reauthentication"),
(m_is_client) ? EAPL("client") : EAPL("server"),
m_state,
get_state_string()
));
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
const eap_type_gsmsim_state_variable_e gsmsim_notification_request_message_reauthentication_states_1[] =
{
eap_type_gsmsim_state_waiting_for_success,
eap_type_gsmsim_state_success,
eap_type_gsmsim_state_waiting_for_notification_request_success,
};
const eap_type_gsmsim_state_variable_e gsmsim_notification_request_message_reauthentication_states_2[] =
{
eap_type_gsmsim_state_waiting_for_identity_request,
eap_type_gsmsim_state_pending_identity_query,
eap_type_gsmsim_state_waiting_for_start_request,
eap_type_gsmsim_state_imsi_waiting_for_start_request,
eap_type_gsmsim_state_pseydonym_waiting_for_start_request,
eap_type_gsmsim_state_analyse_start_request,
eap_type_gsmsim_state_waiting_for_challenge_request,
eap_type_gsmsim_state_analyses_challenge_request,
eap_type_gsmsim_state_pending_kc_sres_query,
eap_type_gsmsim_state_waiting_for_reauth_request,
eap_type_gsmsim_state_analyses_reauthentication_request,
eap_type_gsmsim_state_waiting_for_success,
eap_type_gsmsim_state_success,
eap_type_gsmsim_state_waiting_for_notification_request_success,
eap_type_gsmsim_state_failure,
};
if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == false
&& verify_states(gsmsim_notification_request_message_reauthentication_states_1,
GSMSIM_STATE_COUNT(gsmsim_notification_request_message_reauthentication_states_1)) == true)
#else
// The second most significant bit of the notification code is called
// the Phase bit (P bit). It specifies at which phase of the EAP-SIM
// exchange the notification can be used.
if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == false
&& (m_state == eap_type_gsmsim_state_waiting_for_success
|| m_state == eap_type_gsmsim_state_success
|| m_state == eap_type_gsmsim_state_waiting_for_notification_request_success)
)
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// If the P bit is set to zero,
// the notification can only be used after a successful EAP/SIM/
// Challenge round in full authentication or a successful EAP/SIM/
// Re-authentication round in reautentication. A re-authentication round
// is considered successful only if the peer has successfully verified
// AT_MAC and AT_COUNTER attributes, and does not include the
// AT_COUNTER_TOO_SMALL attribute in EAP-Response/SIM/Re-authentication.
// The AT_MAC attribute MUST beincluded if the P bit of the notification
// code in AT_NOTIFICATION is set to zero, and MUST NOT be included in
// cases when the P bit is set to one. The P bit is discussed in Section
// 4.4.
if (p_gsmsim_payloads->check_payloads(
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_mt
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_s
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // MAC
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // ENCR_DATA
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IDENTITY
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // padding
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // n_RANDs
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // PERMANENT_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // FULLAUTH_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ANY_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // IV
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_PSEUDONYM
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_REAUTH_ID
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // NOTIFICATION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // VERSION_LIST
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // SELECTED_VERSION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER_TOO_SMALL
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // CLIENT_ERROR_CODE
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be // RESULT_IND
) == true
)
{
eap_variable_data_c orig_XKEY(m_am_tools);
eap_variable_data_c orig_K_aut(m_am_tools);
eap_variable_data_c orig_K_encr(m_am_tools);
u32_t reauth_counter = 0u;
// In order to use re-authentication, the client and the server need to
// store the following values: original XKEY, K_aut, K_encr, latest
// counter value and the next re-authentication identity.
status = m_am_type_gsmsim->query_reauth_parameters(
&orig_XKEY,
&orig_K_aut,
&orig_K_encr,
&reauth_counter);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_gsmsim_notification_request_message_reauthentication(): %s, m_saved_reauth_counter %d.\n"),
(m_is_client == true ? "client": "server"),
reauth_counter));
status = check_message_authentication_code(
&orig_K_aut,
p_gsmsim_payloads,
received_gsmsim,
received_gsmsim->get_length());
if (status != eap_status_ok)
{
(void) initialize_error_message(status);
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
bool authentication_ok = true;
// Decrypt and parse encrypted payload.
{
gsmsim_payloads_c * const l_gsmsim_payloads = new gsmsim_payloads_c(m_am_tools);
eap_automatic_variable_c<gsmsim_payloads_c> l_gsmsim_payloads_automatic(m_am_tools, l_gsmsim_payloads);
if (l_gsmsim_payloads == 0
|| l_gsmsim_payloads->get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
status = decrypt_DATA_payload(
p_gsmsim_payloads,
&orig_K_encr);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
u32_t state_payload_buffer_length = p_gsmsim_payloads->get_ENCR_DATA()->get_data_length();
const gsmsim_payload_AT_header_c gp_data_payload(
m_am_tools,
p_gsmsim_payloads->get_ENCR_DATA()->get_data(state_payload_buffer_length),
state_payload_buffer_length);
status = parse_gsmsim_payload(
&gp_data_payload,
&state_payload_buffer_length,
l_gsmsim_payloads,
received_gsmsim->get_subtype());
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (l_gsmsim_payloads->get_COUNTER()->get_payload_included() == false)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
u32_t counter = l_gsmsim_payloads->get_COUNTER()->get_original_header()->get_reserved();
if (counter == reauth_counter)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_gsmsim_notification_request_message_reauthentication(): ")
EAPL("reauth counter %d OK, %d=%s.\n"),
reauth_counter,
m_state,
get_state_string()));
}
else
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message_reauthentication(): ")
EAPL("reauth counter %d wrong, should be %d, %d=%s.\n"),
counter,
reauth_counter,
m_state,
get_state_string()));
authentication_ok = false;
}
}
bool do_increase_reauth_counter(false);
// The most significant bit is called the Failure bit (F bit).
// The F bit specifies whether the notification implies failure.
if (authentication_ok == false
|| get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == false)
{
// The code values with the F bit set to zero (code values 0...32767)
// are used on unsuccessful cases.
// The receipt of a notification code from this range implies failed EAP
// exchange, so the peer can use the notification as a failure indication.
set_state(eap_type_gsmsim_state_failure);
// This will terminate session immediately.
get_type_partner()->set_session_timeout(0ul);
}
else //if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == true)
{
// The receipt of a notification code with the F bit set to one (values
// 32768...65536) does not imply failure. Notification code 32768 has
// been reserved as a general notification code to indicate successful
// authentication.
if (m_gsmsim_notification_code == eap_gsmsim_notification_F_set_no_P_user_authenticated)
{
do_increase_reauth_counter = true;
if (m_wait_eap_success_packet == false)
{
status = finish_successful_authentication(
receive_network_id);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// This version waits the EAP-Success message.
set_state(eap_type_gsmsim_state_waiting_for_success);
status = eap_status_ok;
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, re-authentication OK, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
}
}
status = send_gsmsim_notification_response(
m_gsmsim_notification_code,
true);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (do_increase_reauth_counter == true)
{
// Re-authentication counter is increased only on first time.
// In order to use re-authentication, the client and the server need to
// update re-authentication counter value.
status = m_am_type_gsmsim->increase_reauth_counter();
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
}
else
{
// Not correct GSMSIM-payloads are included.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message(1): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
}
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
else if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == true
&& verify_states(gsmsim_notification_request_message_reauthentication_states_2,
GSMSIM_STATE_COUNT(gsmsim_notification_request_message_reauthentication_states_2)) == true)
#else
else if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == true
&& (m_state == eap_type_gsmsim_state_waiting_for_identity_request
|| m_state == eap_type_gsmsim_state_pending_identity_query
|| m_state == eap_type_gsmsim_state_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_imsi_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_pseydonym_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_analyse_start_request
|| m_state == eap_type_gsmsim_state_waiting_for_challenge_request
|| m_state == eap_type_gsmsim_state_analyses_challenge_request
|| m_state == eap_type_gsmsim_state_pending_kc_sres_query
|| m_state == eap_type_gsmsim_state_waiting_for_reauth_request
|| m_state == eap_type_gsmsim_state_analyses_reauthentication_request
|| m_state == eap_type_gsmsim_state_waiting_for_success
|| m_state == eap_type_gsmsim_state_success
|| m_state == eap_type_gsmsim_state_waiting_for_notification_request_success
|| m_state == eap_type_gsmsim_state_failure))
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// If the P bit is set to one, the notification can only by used before
// the EAP/SIM/Challenge round in full authentication, or before the
// EAP/SIM/Re-authentication round in reauthentication.
// The most significant bit is called the Failure bit (F bit).
// The F bit specifies whether the notification implies failure.
if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == false)
{
// The code values with the F bit set to zero (code values 0...32767)
// are used on unsuccessful cases.
// The receipt of a notification code from this range implies failed EAP
// exchange, so the peer can use the notification as a failure indication.
}
else //if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == true)
{
// The receipt of a notification code with the F bit set to one (values
// 32768...65536) does not imply failure. Notification code 32768 has
// been reserved as a general notification code to indicate successful
// authentication.
}
status = initialize_notification_message();
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message(): ")
EAPL("Wrong message %d=%s in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_gsmsim_notification_request_message_full_authentication(
const eap_am_network_id_c * const receive_network_id,
gsmsim_header_c * const received_gsmsim,
const u32_t /*gsmsim_packet_length*/,
gsmsim_payloads_c * const p_gsmsim_payloads)
{
eap_status_e status = eap_status_process_general_error;
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("send: GSMSIM-type %10s, %s, state %2d=%s\n"),
EAPL("handle_gsmsim_notification_request_message_full_authentication"),
(m_is_client) ? EAPL("client") : EAPL("server"),
m_state,
get_state_string()
));
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
const eap_type_gsmsim_state_variable_e gsmsim_notification_request_message_full_authentication_states_1[] =
{
eap_type_gsmsim_state_waiting_for_success,
eap_type_gsmsim_state_success,
eap_type_gsmsim_state_waiting_for_notification_request_success,
};
const eap_type_gsmsim_state_variable_e gsmsim_notification_request_message_full_authentication_states_2[] =
{
eap_type_gsmsim_state_waiting_for_identity_request,
eap_type_gsmsim_state_pending_identity_query,
eap_type_gsmsim_state_waiting_for_start_request,
eap_type_gsmsim_state_imsi_waiting_for_start_request,
eap_type_gsmsim_state_pseydonym_waiting_for_start_request,
eap_type_gsmsim_state_analyse_start_request,
eap_type_gsmsim_state_waiting_for_challenge_request,
eap_type_gsmsim_state_analyses_challenge_request,
eap_type_gsmsim_state_pending_kc_sres_query,
eap_type_gsmsim_state_waiting_for_reauth_request,
eap_type_gsmsim_state_analyses_reauthentication_request,
eap_type_gsmsim_state_waiting_for_success,
eap_type_gsmsim_state_success,
eap_type_gsmsim_state_waiting_for_notification_request_success,
eap_type_gsmsim_state_failure,
};
if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == false
&& verify_states(gsmsim_notification_request_message_full_authentication_states_1,
GSMSIM_STATE_COUNT(gsmsim_notification_request_message_full_authentication_states_1)) == true)
#else
// The second most significant bit of the notification code is called
// the Phase bit (P bit). It specifies at which phase of the EAP-SIM
// exchange the notification can be used.
if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == false
&& (m_state == eap_type_gsmsim_state_waiting_for_success
|| m_state == eap_type_gsmsim_state_success
|| m_state == eap_type_gsmsim_state_waiting_for_notification_request_success)
)
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// If the P bit is set to zero,
// the notification can only be used after a successful EAP/SIM/
// Challenge round in full authentication or a successful EAP/SIM/
// Re-authentication round in reautentication. A re-authentication round
// is considered successful only if the peer has successfully verified
// AT_MAC and AT_COUNTER attributes, and does not include the
// AT_COUNTER_TOO_SMALL attribute in EAP-Response/SIM/Re-authentication.
// The AT_MAC attribute MUST beincluded if the P bit of the notification
// code in AT_NOTIFICATION is set to zero, and MUST NOT be included in
// cases when the P bit is set to one. The P bit is discussed in Section
// 4.4.
if (p_gsmsim_payloads->check_payloads(
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_mt
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_s
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // MAC
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ENCR_DATA
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IDENTITY
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // padding
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // n_RANDs
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // PERMANENT_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // FULLAUTH_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ANY_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IV
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_PSEUDONYM
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_REAUTH_ID
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // NOTIFICATION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // VERSION_LIST
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // SELECTED_VERSION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER_TOO_SMALL
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // CLIENT_ERROR_CODE
gsmsim_payloads_c::eap_gsmsim_payload_status_optional // RESULT_IND
) == true
)
{
status = check_message_authentication_code(
&m_K_aut,
p_gsmsim_payloads,
received_gsmsim,
received_gsmsim->get_length());
if (status != eap_status_ok)
{
(void) initialize_error_message(status);
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (m_use_result_indication == false
&& m_gsmsim_notification_code == eap_gsmsim_notification_F_set_no_P_user_authenticated)
{
// ERROR: We did not require result indication and server send it to us.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
// The most significant bit is called the Failure bit (F bit).
// The F bit specifies whether the notification implies failure.
if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == false)
{
// The code values with the F bit set to zero (code values 0...32767)
// are used on unsuccessful cases.
// The receipt of a notification code from this range implies failed EAP
// exchange, so the peer can use the notification as a failure indication.
set_state(eap_type_gsmsim_state_failure);
// This will terminate session immediately.
get_type_partner()->set_session_timeout(0ul);
}
else //if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == true)
{
// The receipt of a notification code with the F bit set to one (values
// 32768...65536) does not imply failure. Notification code 32768 has
// been reserved as a general notification code to indicate successful
// authentication.
if (m_gsmsim_notification_code == eap_gsmsim_notification_F_set_no_P_user_authenticated)
{
if (m_wait_eap_success_packet == false)
{
status = finish_successful_authentication(
receive_network_id);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// This version waits the EAP-Success message.
set_state(eap_type_gsmsim_state_waiting_for_success);
status = eap_status_ok;
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, full-authentication OK, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
}
}
status = send_gsmsim_notification_response(
m_gsmsim_notification_code,
false);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// Not correct GSMSIM-payloads are included.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message(1): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
}
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
else if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == true
&& verify_states(gsmsim_notification_request_message_full_authentication_states_2,
GSMSIM_STATE_COUNT(gsmsim_notification_request_message_full_authentication_states_2)) == true)
#else
else if (get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code) == true
&& (m_state == eap_type_gsmsim_state_waiting_for_identity_request
|| m_state == eap_type_gsmsim_state_pending_identity_query
|| m_state == eap_type_gsmsim_state_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_imsi_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_pseydonym_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_analyse_start_request
|| m_state == eap_type_gsmsim_state_waiting_for_challenge_request
|| m_state == eap_type_gsmsim_state_analyses_challenge_request
|| m_state == eap_type_gsmsim_state_pending_kc_sres_query
|| m_state == eap_type_gsmsim_state_waiting_for_reauth_request
|| m_state == eap_type_gsmsim_state_analyses_reauthentication_request
|| m_state == eap_type_gsmsim_state_waiting_for_success
|| m_state == eap_type_gsmsim_state_success
|| m_state == eap_type_gsmsim_state_waiting_for_notification_request_success
|| m_state == eap_type_gsmsim_state_failure))
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// If the P bit is set to one, the notification can only by used before
// the EAP/SIM/Challenge round in full authentication, or before the
// EAP/SIM/Re-authentication round in reauthentication.
// The most significant bit is called the Failure bit (F bit).
// The F bit specifies whether the notification implies failure.
if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == false)
{
// The code values with the F bit set to zero (code values 0...32767)
// are used on unsuccessful cases.
// The receipt of a notification code from this range implies failed EAP
// exchange, so the peer can use the notification as a failure indication.
}
else //if (get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code) == true)
{
// The receipt of a notification code with the F bit set to one (values
// 32768...65536) does not imply failure. Notification code 32768 has
// been reserved as a general notification code to indicate successful
// authentication.
}
status = initialize_notification_message();
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message(): ")
EAPL("Wrong message %d=%s in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_gsmsim_notification_request_message(
const eap_am_network_id_c * const receive_network_id,
gsmsim_header_c * const received_gsmsim,
const u32_t gsmsim_packet_length,
gsmsim_payloads_c * const p_gsmsim_payloads)
{
eap_status_e status = eap_status_process_general_error;
EAP_UNREFERENCED_PARAMETER(received_gsmsim);
EAP_UNREFERENCED_PARAMETER(gsmsim_packet_length);
EAP_UNREFERENCED_PARAMETER(receive_network_id);
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
const eap_type_gsmsim_state_variable_e gsmsim_notification_request_message_states[] =
{
eap_type_gsmsim_state_waiting_for_identity_request,
eap_type_gsmsim_state_pending_identity_query,
eap_type_gsmsim_state_waiting_for_start_request,
eap_type_gsmsim_state_imsi_waiting_for_start_request,
eap_type_gsmsim_state_pseydonym_waiting_for_start_request,
eap_type_gsmsim_state_analyse_start_request,
eap_type_gsmsim_state_waiting_for_challenge_request,
eap_type_gsmsim_state_analyses_challenge_request,
eap_type_gsmsim_state_pending_kc_sres_query,
eap_type_gsmsim_state_waiting_for_notification_request_success,
eap_type_gsmsim_state_waiting_for_success,
eap_type_gsmsim_state_waiting_for_reauth_request,
eap_type_gsmsim_state_analyses_reauthentication_request,
eap_type_gsmsim_state_success,
eap_type_gsmsim_state_failure,
};
if (verify_states(gsmsim_notification_request_message_states,
GSMSIM_STATE_COUNT(gsmsim_notification_request_message_states)) == true)
#else
if (m_state == eap_type_gsmsim_state_waiting_for_identity_request
|| m_state == eap_type_gsmsim_state_pending_identity_query
|| m_state == eap_type_gsmsim_state_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_imsi_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_pseydonym_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_analyse_start_request
|| m_state == eap_type_gsmsim_state_waiting_for_challenge_request
|| m_state == eap_type_gsmsim_state_analyses_challenge_request
|| m_state == eap_type_gsmsim_state_pending_kc_sres_query
|| m_state == eap_type_gsmsim_state_waiting_for_notification_request_success
|| m_state == eap_type_gsmsim_state_waiting_for_success
|| m_state == eap_type_gsmsim_state_waiting_for_reauth_request
|| m_state == eap_type_gsmsim_state_analyses_reauthentication_request
|| m_state == eap_type_gsmsim_state_success
|| m_state == eap_type_gsmsim_state_failure
)
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// This could be first or retransmission request.
// Checks the payloads existence.
if (p_gsmsim_payloads->check_payloads(
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_mt
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_s
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // MAC
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // ENCR_DATA
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IDENTITY
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // padding
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // n_RANDs
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // PERMANENT_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // FULLAUTH_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ANY_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // IV
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_PSEUDONYM
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_REAUTH_ID
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // NOTIFICATION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // VERSION_LIST
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // SELECTED_VERSION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER_TOO_SMALL
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // CLIENT_ERROR_CODE
gsmsim_payloads_c::eap_gsmsim_payload_status_optional // RESULT_IND
) == true
)
{
// NOTE, this message is unauthenticated. Anybody could sent this message.
// We store the received notification code. This will be handled after session timeouts.
m_gsmsim_notification_code =
static_cast<eap_gsmsim_notification_codes_e>(
p_gsmsim_payloads->get_NOTIFICATION()->get_original_header()->get_reserved());
save_current_state();
m_last_eap_identifier = received_gsmsim->get_identifier();
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_gsmsim_notification_request_message(0x%08x), ")
EAPL("notification_code = 0x%04x, F bit %d, P bit %d, state %d=%s.\n"),
this,
m_gsmsim_notification_code,
get_gsmsim_notification_code_F_bit(m_gsmsim_notification_code),
get_gsmsim_notification_code_P_bit(m_gsmsim_notification_code),
m_state,
get_state_string()));
if (m_authentication_type == GSMSIM_AUTHENTICATION_TYPE_REAUTHENTICATION)
{
status = handle_gsmsim_notification_request_message_reauthentication(
receive_network_id,
received_gsmsim,
gsmsim_packet_length,
p_gsmsim_payloads);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
status = handle_gsmsim_notification_request_message_full_authentication(
receive_network_id,
received_gsmsim,
gsmsim_packet_length,
p_gsmsim_payloads);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
}
else
{
// Not correct GSMSIM-payloads are included.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message(1): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
}
else
{
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_gsmsim_notification_request_message(): ")
EAPL("Wrong message %d=%s in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_authentication_failure);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_challenge_request_message(
const eap_am_network_id_c * const /* receive_network_id */,
gsmsim_header_c * const received_gsmsim,
const u32_t gsmsim_packet_length,
gsmsim_payloads_c * const p_gsmsim_payloads)
{
eap_status_e status = eap_status_process_general_error;
if (m_state == eap_type_gsmsim_state_waiting_for_challenge_request
|| (m_state == eap_type_gsmsim_state_waiting_for_success && m_use_result_indication == false)
|| (m_state == eap_type_gsmsim_state_waiting_for_notification_request_success && m_use_result_indication == true))
{
// This could be first or retransmission request.
// Checks the payloads existence.
if (p_gsmsim_payloads->check_payloads(
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_mt
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_s
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // MAC
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // ENCR_DATA
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IDENTITY
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // padding
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // n_RANDs
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // PERMANENT_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // FULLAUTH_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ANY_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_optional, // IV
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_PSEUDONYM
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_REAUTH_ID
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NOTIFICATION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // VERSION_LIST
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // SELECTED_VERSION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER_TOO_SMALL
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // CLIENT_ERROR_CODE
gsmsim_payloads_c::eap_gsmsim_payload_status_optional // RESULT_IND
) == true
)
{
if (p_gsmsim_payloads->get_RESULT_IND()->get_payload_included() == true)
{
m_use_result_indication = m_allow_use_result_indication;
}
else
{
m_use_result_indication = false;
}
if (p_gsmsim_payloads->get_IV()->get_payload_included() == true
|| p_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == true)
{
if (p_gsmsim_payloads->get_IV()->get_payload_included() == true
&& p_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == true)
{
// OK
}
else
{
// All of these must be included
// or none of these must be included.
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
}
// The whole EAP packet must copied.
// The MAC is checked later after n*Kc and n*SRES is get from SIM.
status = m_saved_EAP_packet.set_copy_of_buffer(
received_gsmsim->get_header_buffer(gsmsim_packet_length),
gsmsim_packet_length);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_last_eap_identifier = received_gsmsim->get_identifier();
save_current_state();
set_state(eap_type_gsmsim_state_analyses_challenge_request);
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_variable_data_c n_kc(m_am_tools);
eap_variable_data_c n_sres(m_am_tools);
status = query_SIM_kc_sres(
p_gsmsim_payloads->get_n_RANDs()->get_payload_buffer(),
&n_kc,
&n_sres);
if (status == eap_status_pending_request)
{
// Request will be completed later using complete_SIM_kc_sres() function.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}
else if (status == eap_status_completed_request)
{
// Request was already completed by AM using complete_SIM_kc_sres() function.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}
else if (status == eap_status_success)
{
// eap_status_success means the authentication was successful.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_ok)
{
// The query_SIM_kc_sres() function call is synchronous.
// We must call process_SIM_kc_sres().
}
else
{
// This is an error case.
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// eap_status_ok status value means n_kc and n_sres were read but not processed.
// Next we must call process_SIM_kc_sres().
// - - - - - - - - - - - - - - - - - - - - - - - -
status = process_SIM_kc_sres(
p_gsmsim_payloads->get_n_RANDs()->get_payload_buffer(),
&n_kc,
&n_sres);
if (status != eap_status_ok
&& status != eap_status_success)
{
(void) initialize_error_message(status);
restore_saved_previous_state();
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else
{
// Not correct GSMSIM-payloads are included.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_challenge_request_message(6): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
}
else if (m_state == eap_type_gsmsim_state_pending_kc_sres_query)
{
// This is re-transmitted EAP-Request/SIM/Challenge.
// We dischard it quietly.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("WARNING: eap_type_gsmsim_c::handle_challenge_request_message(): ")
EAPL("Re-transmitted message %d=%s dropped in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_drop_packet_quietly);
}
else
{
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_challenge_request_message(): ")
EAPL("Wrong message %d=%s in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_reauthentication_request_message(
const eap_am_network_id_c * const receive_network_id,
gsmsim_header_c * const received_gsmsim,
const u32_t gsmsim_packet_length,
gsmsim_payloads_c * const p_gsmsim_payloads)
{
eap_status_e status = eap_status_process_general_error;
if (m_state == eap_type_gsmsim_state_waiting_for_reauth_request
|| (m_state == eap_type_gsmsim_state_waiting_for_success && m_use_result_indication == false)
|| (m_state == eap_type_gsmsim_state_waiting_for_notification_request_success && m_use_result_indication == true))
{
// This could be first or retransmission request.
// Checks the payloads existence.
if (p_gsmsim_payloads->check_payloads(
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_mt
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // nonce_s
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // MAC
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // ENCR_DATA
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // IDENTITY
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // padding
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // n_RANDs
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // PERMANENT_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // FULLAUTH_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // ANY_ID_REQ
gsmsim_payloads_c::eap_gsmsim_payload_status_must_be, // IV
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_PSEUDONYM
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NEXT_REAUTH_ID
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // NOTIFICATION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // VERSION_LIST
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // SELECTED_VERSION
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // COUNTER_TOO_SMALL
gsmsim_payloads_c::eap_gsmsim_payload_status_must_not_be, // CLIENT_ERROR_CODE
gsmsim_payloads_c::eap_gsmsim_payload_status_optional // RESULT_IND
) == true
)
{
m_last_eap_identifier = received_gsmsim->get_identifier();
save_current_state();
set_state(eap_type_gsmsim_state_analyses_reauthentication_request);
// - - - - - - - - - - - - - - - - - - - - - - - -
eap_variable_data_c orig_XKEY(m_am_tools);
eap_variable_data_c orig_K_aut(m_am_tools);
eap_variable_data_c orig_K_encr(m_am_tools);
u32_t reauth_counter = 0u;
// In order to use re-authentication, the client and the server need to
// store the following values: original XKEY, K_aut, K_encr, latest
// counter value and the next re-authentication identity.
status = m_am_type_gsmsim->query_reauth_parameters(
&orig_XKEY,
&orig_K_aut,
&orig_K_encr,
&reauth_counter);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_reauthentication_request_message(): %s, m_saved_reauth_counter %d.\n"),
(m_is_client == true ? "client": "server"),
reauth_counter));
status = check_message_authentication_code(
&orig_K_aut,
p_gsmsim_payloads,
received_gsmsim,
gsmsim_packet_length);
if (status != eap_status_ok)
{
(void) initialize_error_message(status);
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (p_gsmsim_payloads->get_RESULT_IND()->get_payload_included() == true)
{
m_use_result_indication = m_allow_use_result_indication;
}
else
{
m_use_result_indication = false;
}
// Decrypt and parse encrypted payload.
if (p_gsmsim_payloads->get_IV()->get_payload_included() == true
|| p_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == true)
{
if (p_gsmsim_payloads->get_IV()->get_payload_included() == true
&& p_gsmsim_payloads->get_ENCR_DATA()->get_payload_included() == true
&& p_gsmsim_payloads->get_MAC()->get_payload_included() == true)
{
gsmsim_payloads_c * const l_gsmsim_payloads = new gsmsim_payloads_c(m_am_tools);
eap_automatic_variable_c<gsmsim_payloads_c> l_gsmsim_payloads_automatic(m_am_tools, l_gsmsim_payloads);
if (l_gsmsim_payloads == 0
|| l_gsmsim_payloads->get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
bool include_at_counter_too_small = false;
status = decrypt_DATA_payload(
p_gsmsim_payloads,
&orig_K_encr);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
u32_t state_payload_buffer_length = p_gsmsim_payloads->get_ENCR_DATA()->get_data_length();
const gsmsim_payload_AT_header_c gp_data_payload(
m_am_tools,
p_gsmsim_payloads->get_ENCR_DATA()->get_data(state_payload_buffer_length),
state_payload_buffer_length);
status = parse_gsmsim_payload(
&gp_data_payload,
&state_payload_buffer_length,
l_gsmsim_payloads,
received_gsmsim->get_subtype());
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (l_gsmsim_payloads->get_COUNTER()->get_payload_included() == false
|| l_gsmsim_payloads->get_NONCE_S()->get_payload_included() == false)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
u32_t counter = l_gsmsim_payloads->get_COUNTER()->get_original_header()->get_reserved();
if (m_gsmsim_test_version == true
&& m_fail_reauthentication_counter_check == true)
{
--counter;
}
if (m_saved_previous_state == eap_type_gsmsim_state_waiting_for_reauth_request)
{
if (counter < reauth_counter)
{
// When the client detects that the
// counter value is not fresh, it includes the AT_COUNTER_TOO_SMALL
// attribute in EAP-Response/SIM/Re-authentication. This attribute
// doesn't contain any data but it is a request for the server to
// initiate full authentication. In this case, the client MUST ignore
// the contents of the server's AT_NEXT_REAUTH_ID attribute.
include_at_counter_too_small = true;
l_gsmsim_payloads->get_NEXT_REAUTH_ID()->reset();
}
}
else if (m_saved_previous_state == eap_type_gsmsim_state_waiting_for_success
|| m_state == eap_type_gsmsim_state_waiting_for_notification_request_success)
{
// This is retransmission request.
if (counter+1ul < reauth_counter)
{
// When the client detects that the
// counter value is not fresh, it includes the AT_COUNTER_TOO_SMALL
// attribute in EAP-Response/SIM/Re-authentication. This attribute
// doesn't contain any data but it is a request for the server to
// initiate full authentication. In this case, the client MUST ignore
// the contents of the server's AT_NEXT_REAUTH_ID attribute.
include_at_counter_too_small = true;
l_gsmsim_payloads->get_NEXT_REAUTH_ID()->reset();
}
}
if (l_gsmsim_payloads->get_NEXT_REAUTH_ID()->get_payload_included() == true)
{
// Save next re-authentication identity.
// GSMSIM AM could store pseudonym to favourite place.
status = m_am_type_gsmsim->store_reauthentication_id(
&m_send_network_id,
l_gsmsim_payloads->get_NEXT_REAUTH_ID()->get_payload_buffer());
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// GSMSIM AM should remove re-authentication identity from favourite place.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_reauthentication_request_message(0x%08x): Resets re-authentication identity from database.\n"),
this));
status = m_am_type_gsmsim->store_reauthentication_id(
&m_send_network_id,
0);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_reauthentication_identity.reset();
}
status = m_nonce_s.set_copy_of_buffer(
l_gsmsim_payloads->get_NONCE_S()->get_payload_buffer());
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = send_reauthentication_response_message(
&orig_XKEY,
&orig_K_aut,
&orig_K_encr,
&m_NAI,
l_gsmsim_payloads->get_NONCE_S()->get_payload_buffer(),
static_cast<u16_t>(counter),
received_gsmsim->get_identifier(),
include_at_counter_too_small);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// OK, server re-authenticates correcly.
if (m_use_result_indication == false
&& m_saved_previous_state == eap_type_gsmsim_state_waiting_for_reauth_request)
{
// Re-authentication counter is increased only on first time.
// In order to use re-authentication, the client and the server need to
// update re-authentication counter value.
status = m_am_type_gsmsim->increase_reauth_counter();
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
if (include_at_counter_too_small == true)
{
// Re-authentication failed.
// We will expect full authentication.
set_state(eap_type_gsmsim_state_waiting_for_start_request);
status = eap_status_ok;
}
else
{
// Authentication was successful.
if (m_use_result_indication == true)
{
// This version waits the result indication.
set_state(eap_type_gsmsim_state_waiting_for_notification_request_success);
status = eap_status_ok;
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, re-authentication OK, waits result indication\n"),
(m_is_client == true) ? "client": "server"));
}
else if (m_wait_eap_success_packet == false)
{
// This version does not wait EAP-Success message.
status = finish_successful_authentication(
receive_network_id);
if (status != eap_status_ok)
{
restore_saved_previous_state();
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
// This version waits the EAP-Success message.
set_state(eap_type_gsmsim_state_waiting_for_success);
status = eap_status_ok;
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT|TRACE_TEST_VECTORS,
(EAPL("EAP_type_GSMSIM: %s, re-authentication OK, waits EAP-Success\n"),
(m_is_client == true) ? "client": "server"));
}
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else
{
// All of these must be included
// or none of these must be included.
restore_saved_previous_state();
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);
}
}
else
{
// Not correct GSMSIM-payloads are included.
restore_saved_previous_state();
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_reauthentication_request_message(6): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
}
else
{
// Not correct GSMSIM-payloads are included.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_reauthentication_request_message(6): ")
EAPL("Not correct GSMSIM-payloads are included in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
}
else
{
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::handle_reauthentication_request_message(): ")
EAPL("Wrong message %d=%s in eap_type_gsmsim_state_variable_e %d=%s.\n"),
received_gsmsim->get_subtype(),
received_gsmsim->get_subtype_string(),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::handle_eap_identity_query(
const eap_am_network_id_c * const send_network_id,
eap_variable_data_c * const p_identity,
const u8_t eap_identifier,
const eap_variable_data_c * const IMSI,
const eap_variable_data_c * const pseudonym,
const eap_variable_data_c * const reauthentication_identity,
const eap_variable_data_c * const automatic_realm,
const u32_t length_of_mnc,
const bool must_be_synchronous)
{
const eap_variable_data_c *current_identity = 0;
eap_variable_data_c manual_identity(m_am_tools);
bool IMSI_is_used = false;
bool reauth_id_is_used = false;
eap_status_e status = eap_status_process_general_error;
if (m_state != eap_type_gsmsim_state_pending_identity_query)
{
// Authentication is state is wrong. Cannot continue.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_wrong_gsmsim_state);
}
if (must_be_synchronous == true
&& p_identity == 0)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);
}
if (IMSI == 0
|| IMSI->get_is_valid_data() == false
|| IMSI->get_data_length() < EAP_TYPE_GSMSIM_MINIMUM_IMSI_LENGTH)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_eap_identity);
}
// We must save queried re-authentication and pseudonym identity.
if (reauthentication_identity != 0
&& reauthentication_identity->get_is_valid_data() == true)
{
status = m_reauthentication_identity.set_copy_of_buffer(reauthentication_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
if (pseudonym != 0
&& pseudonym->get_is_valid_data() == true)
{
status = m_pseudonym.set_copy_of_buffer(pseudonym);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
if (m_use_manual_username == true
&& m_manual_username.get_is_valid_data() == true
&& m_use_manual_realm == true
&& m_manual_realm.get_is_valid_data() == true)
{
// Here manual username could be zero or more bytes in length.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(): Client sends manual username and realm.\n")));
status = manual_identity.set_copy_of_buffer(&m_manual_username);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
current_identity = &manual_identity;
IMSI_is_used = false;
}
else if (m_use_manual_username == true
&& m_manual_username.get_is_valid_data() == true
&& m_use_manual_realm == false)
{
// We will send manual username with automatic realm.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(): Client sends manual username and automatic realm.\n")));
status = manual_identity.set_copy_of_buffer(&m_manual_username);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
current_identity = &manual_identity;
IMSI_is_used = false;
}
else if (reauthentication_identity != 0
&& reauthentication_identity->get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(): Client sends re-authentication identity.\n")));
current_identity = reauthentication_identity;
IMSI_is_used = false;
reauth_id_is_used = true;
status = m_reauthentication_identity.set_copy_of_buffer(reauthentication_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (pseudonym != 0
&& pseudonym->get_is_valid_data() == true)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(): Client sends pseudonym username.\n")));
current_identity = pseudonym;
IMSI_is_used = false;
status = m_pseudonym.set_copy_of_buffer(pseudonym);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else if (m_use_random_identity_on_eap_identity_response == true)
{
// Generate random username.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(): Client sends random username.\n")));
const u32_t EAP_TLS_PEAP_RANDOM_IDENTITY_LENGTH = 16;
eap_variable_data_c random_username(m_am_tools);
eap_variable_data_c random_bytes(m_am_tools);
status = random_bytes.init(EAP_TLS_PEAP_RANDOM_IDENTITY_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
random_bytes.set_is_valid();
random_bytes.set_data_length(EAP_TLS_PEAP_RANDOM_IDENTITY_LENGTH);
status = m_am_tools->get_crypto()->get_rand_bytes(
random_bytes.get_data(),
random_bytes.get_data_length());
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
// Change first byte to 'r' to make it different than the default IMSI prefix '1'.
// This will cause the first identity char 'S' after ascii armor conversion.
*random_bytes.get_data(1ul) = static_cast<u8_t>('r');
const u32_t EAP_GSMSIM_RANDOM_IDENTITY_BUFFER_LENGTH
= 3ul+(EAP_TLS_PEAP_RANDOM_IDENTITY_LENGTH+1u)*4u/3u;
status = random_username.init(EAP_GSMSIM_RANDOM_IDENTITY_BUFFER_LENGTH);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
random_username.set_is_valid();
random_username.set_data_length(EAP_GSMSIM_RANDOM_IDENTITY_BUFFER_LENGTH);
u32_t random_identity_length = random_username.get_data_length();
status = m_am_tools->convert_bytes_to_ascii_armor(
random_bytes.get_data(),
random_bytes.get_data_length(),
random_username.get_data(random_username.get_data_length()),
&random_identity_length);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
random_username.set_data_length(random_identity_length);
status = manual_identity.set_copy_of_buffer(&random_username);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
current_identity = &manual_identity;
IMSI_is_used = false;
}
else if (IMSI != 0
&& IMSI->get_is_valid_data() == true
&& IMSI->get_data_length() >= EAP_TYPE_GSMSIM_MINIMUM_IMSI_LENGTH)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(): Client sends IMSI username.\n")));
current_identity = IMSI;
IMSI_is_used = true;
}
if (current_identity != 0)
{
status = m_IMSI.set_copy_of_buffer(IMSI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
status = store_identity(current_identity, IMSI_is_used);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
EAP_TRACE_DATA_DEBUG(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("current_identity"),
current_identity->get_data(),
current_identity->get_data_length()));
eap_variable_data_c NAI(m_am_tools);
if (reauth_id_is_used == true)
{
// Re-authentication identity is NAI.
status = NAI.set_copy_of_buffer(current_identity);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
else
{
status = generate_nai(
&NAI,
m_use_manual_realm,
get_nai_realm(),
current_identity,
IMSI_is_used,
&m_IMSI,
automatic_realm,
length_of_mnc);
}
if (status == eap_status_ok)
{
status = m_NAI.set_copy_of_buffer(&NAI);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
if (must_be_synchronous == false)
{
status = get_type_partner()->complete_eap_identity_query(
send_network_id,
&m_NAI,
eap_identifier);
if (status == eap_status_ok)
{
if (p_identity != 0)
{
status = p_identity->set_copy_of_buffer(&m_NAI);
}
if (status == eap_status_ok)
{
status = eap_status_completed_request;
}
}
}
else
{
status = p_identity->set_copy_of_buffer(&m_NAI);
}
if (status == eap_status_ok
|| status == eap_status_completed_request)
{
if (m_use_random_identity_on_eap_identity_response == true)
{
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_NONE;
set_identity_type(GSMSIM_IDENTITY_TYPE_NONE);
set_state(eap_type_gsmsim_state_waiting_for_start_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(0x%08x): Selects none.\n"),
this));
}
else if (reauthentication_identity != 0
&& reauthentication_identity->get_is_valid_data() == true)
{
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_REAUTHENTICATION;
set_identity_type(GSMSIM_IDENTITY_TYPE_RE_AUTH_ID);
set_state(eap_type_gsmsim_state_waiting_for_reauth_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(0x%08x): Selects fast re-authentication and re-authentication identity.\n"),
this));
}
else if (pseudonym != 0
&& pseudonym->get_is_valid_data() == true)
{
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_PSEUDONYM_ID);
set_state(eap_type_gsmsim_state_pseydonym_waiting_for_start_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(0x%08x): Selects full authentication and pseudonym identity.\n"),
this));
}
else
{
if (m_use_manual_username == true)
{
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_NONE;
set_identity_type(GSMSIM_IDENTITY_TYPE_NONE);
set_state(eap_type_gsmsim_state_waiting_for_start_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(0x%08x): Selects none.\n"),
this));
}
else
{
m_authentication_type = GSMSIM_AUTHENTICATION_TYPE_FULL_AUTH;
set_identity_type(GSMSIM_IDENTITY_TYPE_IMSI_ID);
set_state(eap_type_gsmsim_state_imsi_waiting_for_start_request);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::handle_eap_identity_query(0x%08x): Selects full authentication and IMSI identity.\n"),
this));
}
}
}
}
}
else
{
status = eap_status_illegal_nai;
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::query_eap_identity(
const bool must_be_synchronous,
eap_variable_data_c * const identity,
const eap_am_network_id_c * const receive_network_id,
const u8_t eap_identifier)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_variable_data_c IMSI(m_am_tools);
eap_variable_data_c pseudonym(m_am_tools);
eap_variable_data_c reauthentication_identity(m_am_tools);
if (IMSI.get_is_valid() == false
|| pseudonym.get_is_valid() == false
|| reauthentication_identity.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
// Here we swap the addresses.
eap_am_network_id_c send_network_id(m_am_tools,
receive_network_id->get_destination_id(),
receive_network_id->get_source_id(),
receive_network_id->get_type());
if (send_network_id.get_is_valid() == false)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
}
eap_status_e status = eap_status_process_general_error;
if (m_state == eap_type_gsmsim_state_none)
{
status = new_handler(
receive_network_id,
true);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::query_eap_identity(): eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
const eap_type_gsmsim_state_variable_e gsmsim_query_eap_identity_states[] =
{
eap_type_gsmsim_state_waiting_for_start_request,
eap_type_gsmsim_state_pseydonym_waiting_for_start_request,
eap_type_gsmsim_state_imsi_waiting_for_start_request,
eap_type_gsmsim_state_waiting_for_reauth_request,
};
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
if (m_state == eap_type_gsmsim_state_waiting_for_identity_request
|| (m_gsmsim_test_version == true
&& m_state == eap_type_gsmsim_state_success)) // This one is for testing purposes.
{
m_last_eap_identifier = eap_identifier;
eap_variable_data_c automatic_realm(m_am_tools);
status = query_SIM_IMSI_or_pseudonym_or_reauthentication_id(
&IMSI,
&pseudonym,
&reauthentication_identity,
&automatic_realm,
&m_length_of_mnc,
must_be_synchronous,
gsmsim_payload_AT_ANY_ID_REQ,
eap_type_gsmsim_complete_query_eap_identity,
eap_identifier);
if (status == eap_status_pending_request)
{
// This is pending query, that will be completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status == eap_status_completed_request)
{
// This is already completed by complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query() call.
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::query_eap_identity(): ")
EAPL("completed returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (status != eap_status_ok)
{
// This is the error case.
restore_saved_previous_state();
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::query_eap_identity(): ")
EAPL("error returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else // status == eap_status_ok
{
status = handle_eap_identity_query(
&send_network_id,
identity,
eap_identifier,
&IMSI,
&pseudonym,
&reauthentication_identity,
&automatic_realm,
m_length_of_mnc,
must_be_synchronous);
if (status != eap_status_ok
&& status != eap_status_completed_request)
{
restore_saved_previous_state();
}
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::query_eap_identity(): handle_eap_identity_query() ")
EAPL("returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
}
#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
else if (verify_states(gsmsim_query_eap_identity_states,
GSMSIM_STATE_COUNT(gsmsim_query_eap_identity_states)) == true)
#else
else if (m_state == eap_type_gsmsim_state_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_pseydonym_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_imsi_waiting_for_start_request
|| m_state == eap_type_gsmsim_state_waiting_for_reauth_request)
#endif //#if defined(USE_EAP_GSMSIM_VERIFY_STATES)
{
// This is re-transmission request. We do not change our state.
// Just send EAP-Identity again.
if (m_NAI.get_is_valid_data() == true)
{
status = identity->set_copy_of_buffer(&m_NAI);
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::query_eap_identity(): handle_eap_identity_query() ")
EAPL("returns eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
}
else
{
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::query_eap_identity(): ")
EAPL("EAP-Request/Identity cannot be completed, identity (NAI) ")
EAPL("is missing. in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
else if (m_state == eap_type_gsmsim_state_pending_identity_query)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("eap_type_gsmsim_c::query_eap_identity(): ignores re-transmitted query_eap_identity()")
EAPL("in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_pending_request);
}
// Wrong message in this state.
EAP_TRACE_ERROR(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("WARNING: eap_type_gsmsim_c::query_eap_identity(): ")
EAPL("Wrong message EAP-Request/Identity in eap_type_gsmsim_state_variable_e %d=%s.\n"),
m_state,
get_state_string()));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);
}
//--------------------------------------------------
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::eap_acknowledge(
const eap_am_network_id_c * const receive_network_id)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status(eap_status_ok);
if (m_state == eap_type_gsmsim_state_waiting_for_success
&& m_wait_eap_success_packet == true)
{
status = finish_successful_authentication(
receive_network_id);
}
else
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_DEFAULT,
(EAPL("ignored eap_acknowledge(): state %d=%s, is client %d\n"),
m_state,
get_state_string(),
(m_is_client == true)));
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::set_initial_eap_identifier(
const eap_am_network_id_c * const receive_network_id,
const u8_t initial_identifier)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status = new_handler(
receive_network_id,
false);
if (status != eap_status_ok)
{
EAP_TRACE_DEBUG(
m_am_tools,
TRACE_FLAGS_GSMSIM_ERROR,
(EAPL("ERROR: eap_type_gsmsim_c::set_initial_eap_identifier(): ")
EAPL("new_handler() failed, status %d.\n"),
status));
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
m_last_eap_identifier = static_cast<u8_t>(initial_identifier-1u);
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
#if defined(_DEBUG) && defined(USE_EAP_GSMSIM_TEST_VECTORS)
#include "read_rand_and_triplets.h"
#endif //#if defined(_DEBUG) && defined(USE_EAP_GSMSIM_TEST_VECTORS)
//
EAP_FUNC_EXPORT eap_status_e eap_type_gsmsim_c::generate_nonce(
const u32_t nonce_size,
eap_variable_data_c * const nonce)
{
EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);
eap_status_e status = nonce->init(nonce_size);
if (status != eap_status_ok)
{
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
nonce->set_is_valid();
nonce->set_data_length(nonce_size);
#if defined(_DEBUG) && defined(USE_EAP_GSMSIM_TEST_VECTORS)
if (m_nonce_mt_file.get_is_valid_data() == true)
{
status = read_rand_from_file(m_am_tools, &m_nonce_mt_file, nonce);
if (status != eap_status_ok)
{
status = m_am_tools->get_crypto()->get_rand_bytes(
nonce->get_data(),
nonce->get_data_length());
}
}
else
#endif //#if defined(_DEBUG) && defined(USE_EAP_GSMSIM_TEST_VECTORS)
{
status = m_am_tools->get_crypto()->get_rand_bytes(
nonce->get_data(),
nonce->get_data_length());
}
EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
return EAP_STATUS_RETURN(m_am_tools, status);
}
//--------------------------------------------------
// End.