Bi-Ruei, Chiu
a247907d3a
1. It's no need to modify LTE-RRC's ASN.1 file for enabling option group feature in generate_asn1. 2. It's no need to patch the C header files generated from LTE-RRC/S1AP/X2AP's ASN.1 in fix_asn1. 3. It's no need to pre-process S1AP/X2AP's ASN.1 for enabling information object class feature by asn1tostruct.py. This commit requires an un-official version of asn1c which are collaboration of asn1c community members and `build_helper` is modified in this commit accordingly : https://github.com/brchiu/asn1c/tree/velichkov_s1ap_plus_option_group This asn1c can also convert ASN.1 of 5G NR RRC (38.331, v15.1.0) and generate C files with -findirect-choice command line option without tweaking ASN.1 file. Examples for how to use this asn1c for S1AP are in S1AP files, e.g. s1ap_eNB_nas_procedures.c and s1ap_eNB_handler.c. There is an modified openair-cn (based on tag 0.5.0) with this new asn1c at : https://github.com/brchiu/openair-cn/tree/new-asn1c Basic S1AP interaction and data transfer operation between OAI eNB and this modified openair-cn has been tested. Note: Community version of asn1c is keeping evolved to provide better usage.
180 lines
6.5 KiB
C
180 lines
6.5 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include "s1ap_common.h"
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#include "s1ap_eNB_decoder.h"
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#include "s1ap_mme_decoder.h"
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#include "s1ap_eNB_encoder.h"
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#define MAX_BUF_LENGTH (1024)
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typedef struct {
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char *procedure_name;
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uint8_t buffer[MAX_BUF_LENGTH];
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uint32_t buf_len;
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} s1ap_test_t;
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s1ap_test_t s1ap_test[] = {
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// {
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// .procedure_name = "Downlink NAS transport",
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// .buffer = {
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// 0x00, 0x0B, 0x40, 0x21, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
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// 0x05, 0xC0, 0x01, 0x10, 0xCE, 0xCC, 0x00, 0x08, 0x00, 0x03,
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// 0x40, 0x01, 0xB3, 0x00, 0x1A, 0x00, 0x0A, 0x09, 0x27, 0xAB,
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// 0x1F, 0x7C, 0xEC, 0x01, 0x02, 0x01, 0xD9
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// },
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// .buf_len = 37,
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// },
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{
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.procedure_name = "Uplink NAS transport",
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.buffer = {
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0x00, 0x0D, 0x40, 0x41, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
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0x05, 0xC0, 0x01, 0x10, 0xCE, 0xCC, 0x00, 0x08, 0x00, 0x03,
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0x40, 0x01, 0xB3, 0x00, 0x1A, 0x00, 0x14, 0x13, 0x27, 0xD3,
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0x77, 0xED, 0x4C, 0x01, 0x02, 0x01, 0xDA, 0x28, 0x08, 0x03,
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0x69, 0x6D, 0x73, 0x03, 0x70, 0x66, 0x74, 0x00, 0x64, 0x40,
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0x08, 0x00, 0x02, 0xF8, 0x29, 0x00, 0x00, 0x20, 0x40, 0x00,
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0x43, 0x40, 0x06, 0x00, 0x02, 0xF8, 0x29, 0x00, 0x04,
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},
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.buf_len = 69,
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},
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{
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.procedure_name = "UE capability info indication",
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.buffer = {
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0x00, 0x16, 0x40, 0x37, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
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0x05, 0xC0, 0x01, 0x10, 0xCE, 0xCC, 0x00, 0x08, 0x00, 0x03,
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0x40, 0x01, 0xB3, 0x00, 0x4A, 0x40, 0x20, 0x1F, 0x00, 0xE8,
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0x01, 0x01, 0xA8, 0x13, 0x80, 0x00, 0x20, 0x83, 0x13, 0x05,
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0x0B, 0x8B, 0xFC, 0x2E, 0x2F, 0xF0, 0xB8, 0xBF, 0xAF, 0x87,
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0xFE, 0x40, 0x44, 0x04, 0x07, 0x0C, 0xA7, 0x4A, 0x80,
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},
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.buf_len = 59,
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},
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{
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.procedure_name = "Initial Context Setup Request",
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.buffer = {
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0x00, 0x09, 0x00, 0x80, 0xD4, 0x00, 0x00, 0x06, 0x00, 0x00,
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0x00, 0x05, 0xC0, 0x01, 0x10, 0xCE, 0xCC, 0x00, 0x08, 0x00,
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0x03, 0x40, 0x01, 0xB3, 0x00, 0x42, 0x00, 0x0A, 0x18, 0x08,
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0xF0, 0xD1, 0x80, 0x60, 0x02, 0xFA, 0xF0, 0x80, 0x00, 0x18,
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0x00, 0x80, 0x81, 0x00, 0x00, 0x34, 0x00, 0x7C, 0x45, 0x00,
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0x09, 0x3D, 0x0F, 0x80, 0x0A, 0x05, 0x00, 0x02, 0x03, 0x78,
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0x48, 0x86, 0x6D, 0x27, 0xC7, 0x97, 0x8E, 0xA1, 0x02, 0x07,
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0x42, 0x01, 0x49, 0x06, 0x00, 0x02, 0xF8, 0x29, 0x00, 0x04,
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0x00, 0x48, 0x52, 0x01, 0xC1, 0x01, 0x09, 0x1B, 0x03, 0x69,
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0x6D, 0x73, 0x03, 0x70, 0x66, 0x74, 0x06, 0x6D, 0x6E, 0x63,
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0x30, 0x39, 0x32, 0x06, 0x6D, 0x63, 0x63, 0x32, 0x30, 0x38,
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0x04, 0x67, 0x70, 0x72, 0x73, 0x05, 0x01, 0x0A, 0x80, 0x00,
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0x24, 0x5D, 0x01, 0x00, 0x30, 0x10, 0x23, 0x93, 0x1F, 0x93,
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0x96, 0xFE, 0xFE, 0x74, 0x4B, 0xFF, 0xFF, 0x00, 0xC5, 0x00,
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0x6C, 0x00, 0x32, 0x0B, 0x84, 0x34, 0x01, 0x08, 0x5E, 0x04,
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0xFE, 0xFE, 0xC5, 0x6C, 0x50, 0x0B, 0xF6, 0x02, 0xF8, 0x29,
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0x80, 0x00, 0x01, 0xF0, 0x00, 0x70, 0x8A, 0x53, 0x12, 0x64,
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0x01, 0x01, 0x00, 0x6B, 0x00, 0x05, 0x18, 0x00, 0x0C, 0x00,
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0x00, 0x00, 0x49, 0x00, 0x20, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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},
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.buf_len = 217,
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},
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{
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.procedure_name = "Initial context setup response",
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.buffer = {
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0x20, 0x09, 0x00, 0x26, 0x00, 0x00, 0x03, 0x00, 0x00, 0x40,
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0x05, 0xC0, 0x01, 0x10, 0xCE, 0xCC, 0x00, 0x08, 0x40, 0x03,
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0x40, 0x01, 0xB3, 0x00, 0x33, 0x40, 0x0F, 0x00, 0x00, 0x32,
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0x40, 0x0A, 0x0A, 0x1F, 0x0A, 0x05, 0x02, 0x05, 0x00, 0x0F,
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0x7A, 0x03,
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},
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.buf_len = 42,
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}
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};
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static int compare_buffer(uint8_t *buffer, uint32_t length_buffer,
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uint8_t *pattern,
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uint32_t length_pattern)
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{
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int i;
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if (length_buffer != length_pattern) {
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printf("Length mismatch, expecting %d bytes, got %d bytes\n", length_pattern,
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length_buffer);
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return -1;
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}
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for (i = 0; i < length_buffer; i++) {
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if (pattern[i] != buffer[i]) {
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printf("Mismatch fount in bytes %d\nExpecting 0x%02x, got 0x%02x\n",
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i, pattern[i], buffer[i]);
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}
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}
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int i;
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asn1_xer_print = 2;
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if (argc > 1) {
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asn_debug = 1;
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}
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for (i = 0; i < sizeof(s1ap_test) / sizeof(s1ap_test_t); i++) {
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S1AP_S1AP_PDU_t pdu;
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uint8_t *buffer;
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uint32_t length;
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memset(&pdu, 0, sizeof(pdu));
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printf("Trying to decode %s procedure with asn1c decoder\n",
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s1ap_test[i].procedure_name);
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if (s1ap_mme_decode_pdu(&pdu, s1ap_test[i].buffer,
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s1ap_test[i].buf_len) < 0) {
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if (s1ap_eNB_decode_pdu(&pdu, s1ap_test[i].buffer,
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s1ap_test[i].buf_len) < 0) {
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printf("Failed to decode this message\n");
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} else {
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printf("Succesfully decoded %s with eNB decoder\n", s1ap_test[i].procedure_name);
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}
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} else {
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printf("Succesfully decoded %s with MME decoder\n", s1ap_test[i].procedure_name);
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}
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printf("Trying to encode %s procedure with asn1c encoder\n",
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s1ap_test[i].procedure_name);
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if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
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printf("Failed to encode this message on MME side, trying eNB side\n");
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} else {
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compare_buffer(buffer, length, s1ap_test[i].buffer, s1ap_test[i].buf_len);
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free(buffer);
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}
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}
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return 0;
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}
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