mirror of https://gerrit.osmocom.org/asn1c
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*-
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* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#include <BIT_STRING.h>
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/*
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* BIT STRING basic type description.
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*/
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static ber_tlv_tag_t asn1_DEF_BIT_STRING_tags[] = {
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(ASN_TAG_CLASS_UNIVERSAL | (3 << 2))
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};
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asn1_TYPE_descriptor_t asn1_DEF_BIT_STRING = {
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"BIT STRING",
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BIT_STRING_constraint,
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OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */
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OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */
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BIT_STRING_print,
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OCTET_STRING_free, /* Implemented in terms of OCTET STRING */
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0, /* Use generic outmost tag fetcher */
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asn1_DEF_BIT_STRING_tags,
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sizeof(asn1_DEF_BIT_STRING_tags)
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/ sizeof(asn1_DEF_BIT_STRING_tags[0]),
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1, /* Single UNIVERSAL tag may be implicitly overriden */
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-1, /* Both ways are fine */
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(void *)-1 /* Special indicator that this is a BIT STRING */
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};
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/*
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* BIT STRING generic constraint.
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*/
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int
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BIT_STRING_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
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asn_app_consume_bytes_f *app_errlog, void *app_key) {
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const BIT_STRING_t *st = sptr;
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if(st && st->buf) {
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if(st->size) {
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if(st->size == 1 && st->buf[0] != 0) {
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_ASN_ERRLOG("%s: invalid padding byte",
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td->name);
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return -1;
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}
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} else {
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_ASN_ERRLOG("%s: no padding byte", td->name);
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return -1;
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}
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} else {
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_ASN_ERRLOG("%s: value not given", td->name);
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return -1;
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}
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return 0;
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}
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/*
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* BIT STRING specific contents printer.
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*/
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int
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BIT_STRING_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
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asn_app_consume_bytes_f *cb, void *app_key) {
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static char h2c[16] = "0123456789ABCDEF";
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char scratch[64];
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const BIT_STRING_t *st = sptr;
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uint8_t *buf;
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uint8_t *end;
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char *p = scratch;
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(void)td; /* Unused argument */
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if(!st || !st->buf) return cb("<absent>", 8, app_key);
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ilevel += 4;
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buf = st->buf;
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end = buf + st->size;
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/*
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* Hexadecimal dump.
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*/
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for(buf++; buf < end; buf++) {
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if(((buf - st->buf) - 1) % 16 == 0) {
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int i;
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/* Indentation */
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if(cb("\n", 1, app_key)) return -1;
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for(i = 0; i < ilevel; i++) cb(" ", 1, app_key);
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/* Dump the string */
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if(cb(scratch, p - scratch, app_key)) return -1;
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p = scratch;
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}
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*p++ = h2c[*buf >> 4];
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*p++ = h2c[*buf & 0x0F];
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*p++ = 0x20;
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}
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/* Dump the incomplete 16-bytes row */
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return cb(scratch, p - scratch, app_key);
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}
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