X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?p=sim%2Fe2-interface.git;a=blobdiff_plain;f=e2sim%2Fe2apv1sim%2FASN1c%2Fber_tlv_length.c;fp=e2sim%2Fe2apv1sim%2FASN1c%2Fber_tlv_length.c;h=0000000000000000000000000000000000000000;hp=0a0deec1aee7da88404a966b13b215554fbdbc9b;hb=a9733dbcc47e93a3b2843056f1d587196296c324;hpb=3ebf932d23dcbec9ed19f4a51f9d00a0a54f5124 diff --git a/e2sim/e2apv1sim/ASN1c/ber_tlv_length.c b/e2sim/e2apv1sim/ASN1c/ber_tlv_length.c deleted file mode 100644 index 0a0deec..0000000 --- a/e2sim/e2apv1sim/ASN1c/ber_tlv_length.c +++ /dev/null @@ -1,168 +0,0 @@ -/*- - * Copyright (c) 2003, 2004 Lev Walkin . All rights reserved. - * Redistribution and modifications are permitted subject to BSD license. - */ -#include -#include -#include - -ssize_t -ber_fetch_length(int _is_constructed, const void *bufptr, size_t size, - ber_tlv_len_t *len_r) { - const uint8_t *buf = (const uint8_t *)bufptr; - unsigned oct; - - if(size == 0) - return 0; /* Want more */ - - oct = *(const uint8_t *)buf; - if((oct & 0x80) == 0) { - /* - * Short definite length. - */ - *len_r = oct; /* & 0x7F */ - return 1; - } else { - ber_tlv_len_t len; - size_t skipped; - - if(_is_constructed && oct == 0x80) { - *len_r = -1; /* Indefinite length */ - return 1; - } - - if(oct == 0xff) { - /* Reserved in standard for future use. */ - return -1; - } - - oct &= 0x7F; /* Leave only the 7 LS bits */ - for(len = 0, buf++, skipped = 1; - oct && (++skipped <= size); buf++, oct--) { - - /* Verify that we won't overflow. */ - if(!(len >> ((8 * sizeof(len)) - (8+1)))) { - len = (len << 8) | *buf; - } else { - /* Too large length value. */ - return -1; - } - } - - if(oct == 0) { - if(len < 0 || len > RSSIZE_MAX) { - /* Length value out of sane range. */ - return -1; - } - - *len_r = len; - return skipped; - } - - return 0; /* Want more */ - } - -} - -ssize_t -ber_skip_length(const asn_codec_ctx_t *opt_codec_ctx, - int _is_constructed, const void *ptr, size_t size) { - ber_tlv_len_t vlen; /* Length of V in TLV */ - ssize_t tl; /* Length of L in TLV */ - ssize_t ll; /* Length of L in TLV */ - size_t skip; - - /* - * Make sure we didn't exceed the maximum stack size. - */ - if(ASN__STACK_OVERFLOW_CHECK(opt_codec_ctx)) - return -1; - - /* - * Determine the size of L in TLV. - */ - ll = ber_fetch_length(_is_constructed, ptr, size, &vlen); - if(ll <= 0) return ll; - - /* - * Definite length. - */ - if(vlen >= 0) { - skip = ll + vlen; - if(skip > size) - return 0; /* Want more */ - return skip; - } - - /* - * Indefinite length! - */ - ASN_DEBUG("Skipping indefinite length"); - for(skip = ll, ptr = ((const char *)ptr) + ll, size -= ll;;) { - ber_tlv_tag_t tag; - - /* Fetch the tag */ - tl = ber_fetch_tag(ptr, size, &tag); - if(tl <= 0) return tl; - - ll = ber_skip_length(opt_codec_ctx, - BER_TLV_CONSTRUCTED(ptr), - ((const char *)ptr) + tl, size - tl); - if(ll <= 0) return ll; - - skip += tl + ll; - - /* - * This may be the end of the indefinite length structure, - * two consecutive 0 octets. - * Check if it is true. - */ - if(((const uint8_t *)ptr)[0] == 0 - && ((const uint8_t *)ptr)[1] == 0) - return skip; - - ptr = ((const char *)ptr) + tl + ll; - size -= tl + ll; - } - - /* UNREACHABLE */ -} - -size_t -der_tlv_length_serialize(ber_tlv_len_t len, void *bufp, size_t size) { - size_t required_size; /* Size of len encoding */ - uint8_t *buf = (uint8_t *)bufp; - uint8_t *end; - int i; - - if(len <= 127) { - /* Encoded in 1 octet */ - if(size) *buf = (uint8_t)len; - return 1; - } - - /* - * Compute the size of the subsequent bytes. - */ - for(required_size = 1, i = 8; i < 8 * (int)sizeof(len); i += 8) { - if(len >> i) - required_size++; - else - break; - } - - if(size <= required_size) - return required_size + 1; - - *buf++ = (uint8_t)(0x80 | required_size); /* Length of the encoding */ - - /* - * Produce the len encoding, space permitting. - */ - end = buf + required_size; - for(i -= 8; buf < end; i -= 8, buf++) - *buf = (uint8_t)(len >> i); - - return required_size + 1; -} -