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