forked from acouzens/open5gs
144 lines
4.3 KiB
C
144 lines
4.3 KiB
C
/*
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* Copyright (C) 2019,2020 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "test-common.h"
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int ogs_nas_5gs_encode_deregistration_request_from_ue(
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ogs_pkbuf_t *pkbuf, ogs_nas_5gs_message_t *message);
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ogs_pkbuf_t *test_nas_5gmm_encode(ogs_nas_5gs_message_t *message)
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{
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ogs_pkbuf_t *pkbuf = NULL;
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int size = 0;
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int encoded = 0;
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ogs_assert(message);
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/* The Packet Buffer(ogs_pkbuf_t) for NAS message MUST make a HEADROOM.
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* When calculating AES_CMAC, we need to use the headroom of the packet. */
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pkbuf = ogs_pkbuf_alloc(NULL, OGS_MAX_SDU_LEN);
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ogs_assert(pkbuf);
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ogs_pkbuf_reserve(pkbuf, OGS_NAS_HEADROOM);
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ogs_pkbuf_put(pkbuf, OGS_MAX_SDU_LEN-OGS_NAS_HEADROOM);
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size = sizeof(ogs_nas_5gmm_header_t);
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ogs_assert(ogs_pkbuf_pull(pkbuf, size));
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memcpy(pkbuf->data - size, &message->gmm.h, size);
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encoded += size;
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switch(message->gmm.h.message_type) {
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case OGS_NAS_5GS_DEREGISTRATION_REQUEST_FROM_UE:
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size = ogs_nas_5gs_encode_deregistration_request_from_ue(
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pkbuf, message);
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ogs_assert(size >= 0);
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encoded += size;
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break;
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default:
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ogs_error("Unknown message type (0x%x) or not implemented",
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message->gmm.h.message_type);
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ogs_pkbuf_free(pkbuf);
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return NULL;
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}
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ogs_assert(ogs_pkbuf_push(pkbuf, encoded));
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pkbuf->len = encoded;
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return pkbuf;
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}
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ogs_pkbuf_t *test_nas_5gs_plain_encode(ogs_nas_5gs_message_t *message)
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{
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ogs_assert(message);
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ogs_assert(message->gmm.h.extended_protocol_discriminator ==
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message->gsm.h.extended_protocol_discriminator);
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if (message->gmm.h.extended_protocol_discriminator ==
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OGS_NAS_EXTENDED_PROTOCOL_DISCRIMINATOR_5GMM)
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return test_nas_5gmm_encode(message);
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ogs_error("Unknown discriminator [%d]",
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message->gmm.h.extended_protocol_discriminator);
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return NULL;
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}
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int ogs_nas_eps_encode_detach_request_from_ue(
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ogs_pkbuf_t *pkbuf, ogs_nas_eps_message_t *message);
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ogs_pkbuf_t *test_nas_emm_encode(ogs_nas_eps_message_t *message)
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{
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ogs_pkbuf_t *pkbuf = NULL;
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int size = 0;
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int encoded = 0;
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ogs_assert(message);
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/* The Packet Buffer(ogs_pkbuf_t) for NAS message MUST make a HEADROOM.
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* When calculating AES_CMAC, we need to use the headroom of the packet. */
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pkbuf = ogs_pkbuf_alloc(NULL, OGS_MAX_SDU_LEN);
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ogs_assert(pkbuf);
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ogs_pkbuf_reserve(pkbuf, OGS_NAS_HEADROOM);
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ogs_pkbuf_put(pkbuf, OGS_MAX_SDU_LEN-OGS_NAS_HEADROOM);
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size = sizeof(ogs_nas_emm_header_t);
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ogs_assert(ogs_pkbuf_pull(pkbuf, size));
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memcpy(pkbuf->data - size, &message->emm.h, size);
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encoded += size;
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switch(message->emm.h.message_type) {
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case OGS_NAS_EPS_DETACH_REQUEST:
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size = ogs_nas_eps_encode_detach_request_from_ue(pkbuf, message);
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ogs_assert(size >= 0);
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encoded += size;
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break;
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default:
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ogs_error("Unknown message type (0x%x) or not implemented",
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message->emm.h.message_type);
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ogs_pkbuf_free(pkbuf);
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return NULL;
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}
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ogs_assert(ogs_pkbuf_push(pkbuf, encoded));
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pkbuf->len = encoded;
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return pkbuf;
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}
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ogs_pkbuf_t *test_nas_eps_plain_encode(ogs_nas_eps_message_t *message)
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{
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ogs_assert(message);
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ogs_assert(message->emm.h.protocol_discriminator ==
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message->emm.h.protocol_discriminator);
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if (message->emm.h.protocol_discriminator ==
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OGS_NAS_PROTOCOL_DISCRIMINATOR_EMM)
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return test_nas_emm_encode(message);
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ogs_error("Unknown discriminator [%d]",
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message->emm.h.protocol_discriminator);
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return NULL;
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}
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