gauthier
c7518ecf42
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7885 818b1a75-f10b-46b9-bf7c-635c3b92a50f
122 lines
4.2 KiB
C
122 lines
4.2 KiB
C
/*
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* Copyright (c) 2015, EURECOM (www.eurecom.fr)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are those
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* of the authors and should not be interpreted as representing official policies,
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* either expressed or implied, of the FreeBSD Project.
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*/
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#ifndef ASN1_CONVERSIONS_H_
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#define ASN1_CONVERSIONS_H_
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#include "BIT_STRING.h"
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#include "assertions.h"
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//-----------------------begin func -------------------
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/*! \fn uint8_t BIT_STRING_to_uint8(BIT_STRING_t *)
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*\brief This function extract at most a 8 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint8_t BIT_STRING_to_uint8(BIT_STRING_t *asn) {
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DevCheck ((asn->size == 1), asn->size, 0, 0);
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return asn->buf[0] >> asn->bits_unused;
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}
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/*! \fn uint16_t BIT_STRING_to_uint16(BIT_STRING_t *)
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*\brief This function extract at most a 16 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint16_t BIT_STRING_to_uint16(BIT_STRING_t *asn) {
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uint16_t result = 0;
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int index = 0;
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DevCheck ((asn->size > 0) && (asn->size <= 2), asn->size, 0, 0);
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switch (asn->size) {
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case 2:
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result |= asn->buf[index++] << (8 - asn->bits_unused);
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case 1:
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result |= asn->buf[index] >> asn->bits_unused;
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break;
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default:
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break;
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}
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return result;
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}
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/*! \fn uint32_t BIT_STRING_to_uint32(BIT_STRING_t *)
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*\brief This function extract at most a 32 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint32_t BIT_STRING_to_uint32(BIT_STRING_t *asn) {
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uint32_t result = 0;
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int index;
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int shift;
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DevCheck ((asn->size > 0) && (asn->size <= 4), asn->size, 0, 0);
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shift = ((asn->size - 1) * 8) - asn->bits_unused;
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for (index = 0; index < (asn->size - 1); index++) {
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result |= asn->buf[index] << shift;
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shift -= 8;
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}
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result |= asn->buf[index] >> asn->bits_unused;
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return result;
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}
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/*! \fn uint64_t BIT_STRING_to_uint64(BIT_STRING_t *)
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*\brief This function extract at most a 64 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint64_t BIT_STRING_to_uint64(BIT_STRING_t *asn) {
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uint64_t result = 0;
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int index;
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int shift;
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DevCheck ((asn->size > 0) && (asn->size <= 8), asn->size, 0, 0);
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shift = ((asn->size - 1) * 8) - asn->bits_unused;
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for (index = 0; index < (asn->size - 1); index++) {
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result |= asn->buf[index] << shift;
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shift -= 8;
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}
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result |= asn->buf[index] >> asn->bits_unused;
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return result;
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}
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#endif
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