p≡p engine - CI/CD: https://pep-security.lu/gitlab/cid/mirrors/pepengine/-/pipelines
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141 lines
3.1 KiB
141 lines
3.1 KiB
/**
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* @file PEPMessage_codec.c
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* @brief Implementation for PEPMessage encode and decode functions which transform message payloads to
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* and from PER-encoded data, and XER text to and from PER
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*
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* @see https://www.itu.int/en/ITU-T/asn1/Pages/introduction.aspx
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*
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* @license GNU General Public License 3.0 - see LICENSE.txt
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*/
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#include "platform.h"
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#include "distribution_codec.h"
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#include "../asn.1/PEPMessage.h"
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#include "pEp_internal.h"
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#include "growing_buf.h"
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DYNAMIC_API PEP_STATUS decode_PEPMessage_message(
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const char *data,
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size_t size,
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PEPMessage_t **msg
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)
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{
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assert(data && msg);
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if (!(data && msg))
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return PEP_ILLEGAL_VALUE;
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*msg = NULL;
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PEPMessage_t *_msg = NULL;
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uper_decode_complete(NULL, &asn_DEF_PEPMessage, (void **) &_msg, data, size);
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if (!_msg)
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return PEP_PEPMESSAGE_ILLEGAL_MESSAGE;
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*msg = _msg;
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return PEP_STATUS_OK;
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}
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PEP_STATUS encode_PEPMessage_message(
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PEPMessage_t *msg,
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char **data,
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size_t *size
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)
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{
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assert(data && msg);
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if (!(data && msg))
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return PEP_ILLEGAL_VALUE;
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*data = NULL;
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*size = 0;
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char *_data = NULL;
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ssize_t _size = uper_encode_to_new_buffer(&asn_DEF_PEPMessage, NULL, msg,
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(void **) &_data);
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if (_size == -1)
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return PEP_CANNOT_ENCODE;
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*data = _data;
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*size = (size_t) _size;
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return PEP_STATUS_OK;
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}
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PEP_STATUS PER_to_XER_PEPMessage_msg(
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const char *data,
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size_t size,
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char **text
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)
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{
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PEP_STATUS status = PEP_STATUS_OK;
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growing_buf_t *dst = NULL;
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assert(data && text);
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if (!(data && text))
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return PEP_ILLEGAL_VALUE;
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*text = NULL;
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PEPMessage_t *msg = NULL;
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status = decode_PEPMessage_message(data, size, &msg);
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if (status)
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goto the_end;
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dst = new_growing_buf();
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if (!dst) {
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status = PEP_OUT_OF_MEMORY;
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goto the_end;
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}
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asn_enc_rval_t er = xer_encode(&asn_DEF_PEPMessage, msg, XER_F_BASIC,
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(asn_app_consume_bytes_f *) growing_buf_consume, (void *) dst);
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if (er.encoded == -1) {
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status = PEP_CANNOT_ENCODE;
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goto the_end;
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}
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*text = dst->data;
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dst->data = NULL;
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the_end:
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free_growing_buf(dst);
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ASN_STRUCT_FREE(asn_DEF_PEPMessage, msg);
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return status;
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}
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PEP_STATUS XER_to_PER_PEPMessage_msg(
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const char *text,
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char **data,
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size_t *size
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)
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{
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PEP_STATUS status = PEP_STATUS_OK;
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assert(text && data && size);
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if (!(text && data && size))
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return PEP_ILLEGAL_VALUE;
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*data = NULL;
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*size = 0;
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PEPMessage_t *msg = NULL;
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asn_dec_rval_t dr = xer_decode(NULL, &asn_DEF_PEPMessage, (void **) &msg,
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(const void *) text, strlen(text));
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if (dr.code != RC_OK) {
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status = PEP_PEPMESSAGE_ILLEGAL_MESSAGE;
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goto the_end;
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}
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char *_data = NULL;
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size_t _size = 0;
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status = encode_PEPMessage_message(msg, &_data, &_size);
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if (status)
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goto the_end;
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*data = _data;
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*size = (size_t) _size;
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the_end:
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ASN_STRUCT_FREE(asn_DEF_PEPMessage, msg);
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return status;
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}
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