X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?p=sim%2Fe2-interface.git;a=blobdiff_plain;f=e2sim%2Fprevious%2Fe2apv1sim%2Fe2sim%2FASN1c%2Foer_decoder.c;fp=e2sim%2Fprevious%2Fe2apv1sim%2Fe2sim%2FASN1c%2Foer_decoder.c;h=0000000000000000000000000000000000000000;hp=070173826d05c24918b25e0ebea8f19fb9245191;hb=f86662b5b6481f27e18313a36355871f3a947193;hpb=a9f02a2b5886990fd81e64f7c218c5d4844f18a3 diff --git a/e2sim/previous/e2apv1sim/e2sim/ASN1c/oer_decoder.c b/e2sim/previous/e2apv1sim/e2sim/ASN1c/oer_decoder.c deleted file mode 100644 index 0701738..0000000 --- a/e2sim/previous/e2apv1sim/e2sim/ASN1c/oer_decoder.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * Copyright (c) 2017 Lev Walkin . All rights reserved. - * Redistribution and modifications are permitted subject to BSD license. - */ -#include -#include - -/* - * The OER decoder of any type. - */ -asn_dec_rval_t -oer_decode(const asn_codec_ctx_t *opt_codec_ctx, - const asn_TYPE_descriptor_t *type_descriptor, void **struct_ptr, - const void *ptr, size_t size) { - asn_codec_ctx_t s_codec_ctx; - - /* - * Stack checker requires that the codec context - * must be allocated on the stack. - */ - if(opt_codec_ctx) { - if(opt_codec_ctx->max_stack_size) { - s_codec_ctx = *opt_codec_ctx; - opt_codec_ctx = &s_codec_ctx; - } - } else { - /* If context is not given, be security-conscious anyway */ - memset(&s_codec_ctx, 0, sizeof(s_codec_ctx)); - s_codec_ctx.max_stack_size = ASN__DEFAULT_STACK_MAX; - opt_codec_ctx = &s_codec_ctx; - } - - /* - * Invoke type-specific decoder. - */ - return type_descriptor->op->oer_decoder(opt_codec_ctx, type_descriptor, 0, - struct_ptr, /* Pointer to the destination structure */ - ptr, size /* Buffer and its size */ - ); -} - -/* - * Open Type is encoded as a length (#8.6) followed by that number of bytes. - * Since we're just skipping, reading the length would be enough. - */ -ssize_t -oer_open_type_skip(const void *bufptr, size_t size) { - size_t len = 0; - return oer_fetch_length(bufptr, size, &len); -} - -/* - * Read the Open Type (X.696 (08/2015), #30). - * RETURN VALUES: - * 0: More data expected than bufptr contains. - * -1: Fatal error deciphering length. - * >0: Number of bytes used from bufptr. - */ -ssize_t -oer_open_type_get(const asn_codec_ctx_t *opt_codec_ctx, - const struct asn_TYPE_descriptor_s *td, - const asn_oer_constraints_t *constraints, void **struct_ptr, - const void *bufptr, size_t size) { - asn_dec_rval_t dr; - size_t container_len = 0; - ssize_t len_len; - enum asn_struct_free_method dispose_method = - (*struct_ptr) ? ASFM_FREE_UNDERLYING_AND_RESET : ASFM_FREE_EVERYTHING; - - /* Get the size of a length determinant */ - len_len = oer_fetch_length(bufptr, size, &container_len); - if(len_len <= 0) { - return len_len; /* Error or more data expected */ - } - - /* - * len_len can't be bigger than size, but size without len_len - * should be bigger or equal to container length - */ - if(size - len_len < container_len) { - /* More data is expected */ - return 0; - } - - dr = td->op->oer_decoder(opt_codec_ctx, td, constraints, struct_ptr, - (const uint8_t *)bufptr + len_len, container_len); - if(dr.code == RC_OK) { - return len_len + container_len; - } else { - /* Even if RC_WMORE, we can't get more data into a closed container. */ - td->op->free_struct(td, *struct_ptr, dispose_method); - *struct_ptr = NULL; - return -1; - } -} - - -asn_dec_rval_t -oer_decode_primitive(const asn_codec_ctx_t *opt_codec_ctx, - const asn_TYPE_descriptor_t *td, - const asn_oer_constraints_t *constraints, void **sptr, - const void *ptr, size_t size) { - ASN__PRIMITIVE_TYPE_t *st = (ASN__PRIMITIVE_TYPE_t *)*sptr; - asn_dec_rval_t rval = {RC_OK, 0}; - size_t expected_length = 0; - ssize_t len_len; - - (void)td; - (void)opt_codec_ctx; - (void)constraints; - - if(!st) { - st = (ASN__PRIMITIVE_TYPE_t *)(*sptr = CALLOC( - 1, sizeof(ASN__PRIMITIVE_TYPE_t))); - if(!st) ASN__DECODE_FAILED; - } - - - /* - * X.696 (08/2015) #27.2 - * Encode length determinant as _number of octets_, but only - * if upper bound is not equal to lower bound. - */ - len_len = oer_fetch_length(ptr, size, &expected_length); - if(len_len > 0) { - rval.consumed = len_len; - ptr = (const char *)ptr + len_len; - size -= len_len; - } else if(len_len == 0) { - ASN__DECODE_STARVED; - } else if(len_len < 0) { - ASN__DECODE_FAILED; - } - - if(size < expected_length) { - ASN__DECODE_STARVED; - } else { - uint8_t *buf = MALLOC(expected_length + 1); - if(buf == NULL) { - ASN__DECODE_FAILED; - } else { - memcpy(buf, ptr, expected_length); - buf[expected_length] = '\0'; - } - FREEMEM(st->buf); - st->buf = buf; - st->size = expected_length; - - rval.consumed += expected_length; - return rval; - } -}