--- /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 <string.h>
+#include <errno.h>
+#undef NDEBUG
+#include <assert.h>
+#include <asn1codec_utils.h>
+#include <constr_TYPE.h>
+#include <xer_encoder.h>
+
+/*
+ * Printer for the e2ap pdu.
+ * The string representation of the pdu stored in buf.
+ *
+ * Input:
+ * pdu - the pdu to print.
+ * buf_size - the size of the storage buffer.
+ * buf - hold the string representation of the pdu.
+ */
+bool
+asn1_pdu_printer(E2AP_PDU_t const *pdu, size_t buf_size, char *buf)
+{
+ bool rc = true;
+ char *bufloc = 0;
+ size_t sizeloc = 0;
+ buf[0] = 0;
+ FILE *stream = open_memstream(&bufloc, &sizeloc);
+
+ errno = 0;
+ if (asn_fprint(stream, &asn_DEF_E2AP_PDU, pdu)){
+ snprintf(buf, buf_size, "#%s.%s - Failed to print %s, error = %d ", __FILE__, __func__, asn_DEF_E2AP_PDU.name, errno);
+ strerror_r(errno, buf+strlen(buf), buf_size - strlen(buf));
+ rc = false;
+ } else {
+ buf_size = buf_size > sizeloc ? sizeloc: buf_size -1;
+ memcpy(buf, bufloc, buf_size);
+ buf[buf_size] = 0;
+ }
+
+ fclose(stream);
+ free(bufloc);
+ return rc;
+}
+
+
+/*
+ * XML Printer for the e2ap pdu.
+ * The string representation of the pdu stored in buf.
+ *
+ * Input:
+ * pdu - the pdu to print.
+ * buf_size - the size of the storage buffer.
+ * buf - hold the string representation of the pdu.
+ */
+bool
+asn1_pdu_xer_printer(E2AP_PDU_t const *pdu, size_t buf_size, char *buf)
+{
+ bool rc = true;
+ char *bufloc = 0;
+ size_t sizeloc = 0;
+ buf[0] = 0;
+ FILE *stream = open_memstream(&bufloc, &sizeloc);
+
+ errno = 0;
+ if (xer_fprint(stream, &asn_DEF_E2AP_PDU, pdu)){
+ snprintf(buf, buf_size, "#%s.%s - Failed to print %s, error = %d ", __FILE__, __func__, asn_DEF_E2AP_PDU.name, errno);
+ strerror_r(errno, buf+strlen(buf), buf_size - strlen(buf));
+ rc = false;
+ } else {
+ buf_size = buf_size > sizeloc ? sizeloc: buf_size -1;
+ memcpy(buf, bufloc, buf_size);
+ buf[buf_size] = 0;
+ }
+
+ fclose(stream);
+ free(bufloc);
+ return rc;
+}
+
+/*
+ * Unpack the pdu from ASN.1 PER encoding.
+ *
+ * Input:
+ * pdu - storage for unpacked pdu.
+ * packed_buf_size - size of the encoded data.
+ * packed_buf - storage of the packed pdu
+ * err_buf_size - size of the err_buf which may hold the error string in case of
+ * an error. err_buf - storage for the error string
+ *
+ * Return: true in case of success, false in case of failure.
+ */
+bool
+per_unpack_pdu(E2AP_PDU_t *pdu, size_t packed_buf_size, unsigned char* packed_buf,size_t err_buf_size, char* err_buf)
+{
+ return unpack_pdu_aux(pdu, packed_buf_size, packed_buf,err_buf_size, err_buf,ATS_ALIGNED_BASIC_PER);
+}
+
+bool
+unpack_pdu_aux(E2AP_PDU_t *pdu, size_t packed_buf_size, unsigned char* packed_buf,size_t err_buf_size, char* err_buf,enum asn_transfer_syntax syntax)
+{
+ char spec[256];
+ size_t err_msg_size = err_buf_size;
+
+ //ATS_BASIC_XER ATS_ALIGNED_BASIC_PER, ATS_UNALIGNED_BASIC_PER,ATS_ALIGNED_CANONICAL_PER
+ errno = 0;
+ asn_dec_rval_t rval =
+ asn_decode(0,syntax , &asn_DEF_E2AP_PDU, (void **)&pdu, packed_buf, packed_buf_size);
+ switch(rval.code) {
+ case RC_OK:
+ if (asn_check_constraints(&asn_DEF_E2AP_PDU, pdu,err_buf, &err_msg_size)){
+ snprintf(spec, sizeof(spec), "#%s.%s - Constraint check failed: ", __FILE__, __func__);
+ size_t spec_actual_size = strlen(spec);
+ if (spec_actual_size + err_msg_size < err_buf_size){
+ memmove(err_buf + spec_actual_size, err_buf, err_msg_size + 1);
+ memcpy(err_buf, spec, spec_actual_size);
+ }
+ return false;
+ }
+ return true;
+
+ break;
+ case RC_WMORE:
+ case RC_FAIL:
+ default:
+ break;
+ }
+
+ snprintf(err_buf, err_buf_size, "#%s.%s - Failed to decode %s (consumed %zu), error = %d ", __FILE__, __func__, asn_DEF_E2AP_PDU.name, rval.consumed, errno);
+ strerror_r(errno, err_buf+strlen(err_buf), err_buf_size - strlen(err_buf));
+ return false;
+}
+
+/*
+ * Pack the pdu using ASN.1 PER encoding.
+ *
+ * Input:
+ * pdu - the pdu to pack.
+ * packed_buf_size - in: size of packed_buf; out: number of chars used.
+ * packed_buf - storage for the packed pdu
+ * err_buf_size - size of the err_buf which may hold the error string in case of
+ * an error. err_buf - storage for the error string
+ *
+ * Return: true in case of success, false in case of failure.
+ */
+bool
+per_pack_pdu(E2AP_PDU_t *pdu, size_t *packed_buf_size, unsigned char* packed_buf,size_t err_buf_size, char* err_buf)
+{
+ return pack_pdu_aux(pdu, packed_buf_size, packed_buf,err_buf_size, err_buf,ATS_ALIGNED_BASIC_PER);
+}
+
+bool
+pack_pdu_aux(E2AP_PDU_t *pdu, size_t *packed_buf_size, unsigned char* packed_buf,size_t err_buf_size, char* err_buf,enum asn_transfer_syntax syntax)
+{
+ char spec[256];
+ size_t err_msg_size = err_buf_size;
+
+ if (asn_check_constraints(&asn_DEF_E2AP_PDU, pdu,err_buf, &err_msg_size)){
+ snprintf(spec, sizeof(spec), "#%s.%s - Constraint check failed: ", __FILE__, __func__);
+ size_t spec_actual_size = strlen(spec);
+ if (spec_actual_size + err_msg_size < err_buf_size){
+ memmove(err_buf + spec_actual_size, err_buf, err_msg_size + 1);
+ memcpy(err_buf, spec, spec_actual_size);
+ }
+ return false;
+ }
+
+ errno = 0;
+asn_enc_rval_t res =
+ asn_encode_to_buffer(0, syntax, &asn_DEF_E2AP_PDU, pdu, packed_buf, *packed_buf_size);
+ if(res.encoded == -1) {
+ snprintf(err_buf, err_buf_size, "#%s.%s - Failed to encode %s, error = %d ", __FILE__, __func__, asn_DEF_E2AP_PDU.name, errno);
+ strerror_r(errno, err_buf+strlen(err_buf), err_buf_size - strlen(err_buf));
+ return false;
+ } else {
+ /* Encoded successfully. */
+ if (*packed_buf_size < res.encoded){
+ snprintf(err_buf, err_buf_size, "#%s.%s - Encoded output of %s, is too big:%zu", __FILE__, __func__, asn_DEF_E2AP_PDU.name,res.encoded);
+ return false;
+ } else {
+ *packed_buf_size = res.encoded;
+ }
+ }
+ return true;
+}
+
+/*
+ * Create a new pdu.
+ * Abort the process on allocation failure.
+ */
+E2AP_PDU_t *new_pdu()
+{
+ E2AP_PDU_t *pdu = calloc(1, sizeof(E2AP_PDU_t));
+ assert(pdu != 0);
+ return pdu;
+}
+
+void delete_pdu(E2AP_PDU_t *pdu)
+{
+ ASN_STRUCT_FREE(asn_DEF_E2AP_PDU, pdu);
+}
+
Code Review / ric-plt / resource-status-manager.git / blobdiff