--- /dev/null
+/*
+ *
+ * Copyright 2019 AT&T Intellectual Property
+ * Copyright 2019 Nokia
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include "x2ap_generate_messages.h"
+#include "x2ap_asn_codec.h"
+#include "e2sim_defs.h"
+
+int asn1_xer_print = 0;
+int MAX_XML_BUFFER = 10000;
+
+void x2ap_fetch_pdu_from_XML(X2AP_PDU_t **pdu, char *filename)
+{
+
+ uint8_t buf[MAX_XML_BUFFER];
+
+ asn_dec_rval_t rval;
+ size_t size;
+ FILE *f;
+
+ char XML_path[200];
+ char *work_dir = getenv(WORKDIR_ENV);
+
+ strcpy(XML_path, work_dir);
+ strcat(XML_path, "/src/X2AP/MESSAGES/XML/");
+ strcat(XML_path, filename);
+
+ //printf("Generate X2AP PDU from XML file: %s\n", XML_path);
+
+ f = fopen(XML_path, "r");
+ assert(f);
+ size = fread(buf, 1, sizeof(buf), f);
+ if(size == 0 || size == sizeof(buf))
+ {
+ fprintf(stderr, "%s: Too large input\n", XML_path);
+ exit(1);
+ }
+
+ fclose(f);
+
+ //printf("Decode the XER buffer\n");
+ rval = xer_decode(NULL, &asn_DEF_X2AP_PDU, (void **)pdu, buf, size);
+ assert(rval.code == RC_OK);
+
+}
+
+uint32_t x2ap_generate_x2_setup_request(uint8_t **buffer)
+{
+ X2AP_PDU_t *pdu;
+ pdu = (X2AP_PDU_t *)calloc(1, sizeof(X2AP_PDU_t));
+
+ uint32_t len;
+
+ char *XML_file = "sample_x2_setup_request.xml";
+
+ x2ap_fetch_pdu_from_XML(&pdu, XML_file);
+
+ if(asn1_xer_print)
+ xer_fprint(stdout, &asn_DEF_X2AP_PDU, (void *)pdu);
+
+ if(X2AP_ASN_encode(pdu, buffer, &len) < 0)
+ {
+ fprintf(stderr, "Failed to APER encode X2 Setup Request\n");
+ return -1;
+ }
+
+ return len;
+
+}
+
+uint32_t x2ap_generate_x2_setup_response(uint8_t **buffer)
+{
+ X2AP_PDU_t *pdu;
+ pdu = (X2AP_PDU_t *)calloc(1, sizeof(X2AP_PDU_t));
+
+ uint32_t len;
+
+ char *XML_file = "sample_x2_setup_response.xml";
+
+ x2ap_fetch_pdu_from_XML(&pdu, XML_file);
+
+ if(asn1_xer_print)
+ xer_fprint(stdout, &asn_DEF_X2AP_PDU, (void *)pdu);
+
+ if(X2AP_ASN_encode(pdu, buffer, &len) < 0)
+ {
+ fprintf(stderr, "Failed to APER encode X2 Setup Request\n");
+ return -1;
+ }
+
+ return len;
+
+}