| /*- |
| * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| * Redistribution and modifications are permitted subject to BSD license. |
| */ |
| #include <asn_internal.h> |
| #include <BIT_STRING.h> |
| #include <asn_internal.h> |
| |
| /* |
| * BIT STRING basic type description. |
| */ |
| static ber_tlv_tag_t asn_DEF_BIT_STRING_tags[] = { |
| (ASN_TAG_CLASS_UNIVERSAL | (3 << 2)) |
| }; |
| static asn_OCTET_STRING_specifics_t asn_DEF_BIT_STRING_specs = { |
| sizeof(BIT_STRING_t), |
| offsetof(BIT_STRING_t, _asn_ctx), |
| 1, /* Special indicator that this is a BIT STRING type */ |
| }; |
| asn_TYPE_descriptor_t asn_DEF_BIT_STRING = { |
| "BIT STRING", |
| "BIT_STRING", |
| OCTET_STRING_free, /* Implemented in terms of OCTET STRING */ |
| BIT_STRING_print, |
| BIT_STRING_constraint, |
| OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */ |
| OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */ |
| OCTET_STRING_decode_xer_binary, |
| BIT_STRING_encode_xer, |
| 0, /* Use generic outmost tag fetcher */ |
| asn_DEF_BIT_STRING_tags, |
| sizeof(asn_DEF_BIT_STRING_tags) |
| / sizeof(asn_DEF_BIT_STRING_tags[0]), |
| asn_DEF_BIT_STRING_tags, /* Same as above */ |
| sizeof(asn_DEF_BIT_STRING_tags) |
| / sizeof(asn_DEF_BIT_STRING_tags[0]), |
| 0, 0, /* No members */ |
| &asn_DEF_BIT_STRING_specs |
| }; |
| |
| /* |
| * BIT STRING generic constraint. |
| */ |
| int |
| BIT_STRING_constraint(asn_TYPE_descriptor_t *td, const void *sptr, |
| asn_app_consume_bytes_f *app_errlog, void *app_key) { |
| const BIT_STRING_t *st = (const BIT_STRING_t *)sptr; |
| |
| if(st && st->buf) { |
| if(st->size == 1 && st->bits_unused) { |
| _ASN_ERRLOG(app_errlog, app_key, |
| "%s: invalid padding byte (%s:%d)", |
| td->name, __FILE__, __LINE__); |
| return -1; |
| } |
| } else { |
| _ASN_ERRLOG(app_errlog, app_key, |
| "%s: value not given (%s:%d)", |
| td->name, __FILE__, __LINE__); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static char *_bit_pattern[16] = { |
| "0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111", |
| "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111" |
| }; |
| |
| asn_enc_rval_t |
| BIT_STRING_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, |
| int ilevel, enum xer_encoder_flags_e flags, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| asn_enc_rval_t er; |
| char scratch[128]; |
| char *p = scratch; |
| char *scend = scratch + (sizeof(scratch) - 10); |
| const BIT_STRING_t *st = (const BIT_STRING_t *)sptr; |
| int xcan = (flags & XER_F_CANONICAL); |
| uint8_t *buf; |
| uint8_t *end; |
| |
| if(!st || !st->buf) |
| _ASN_ENCODE_FAILED; |
| |
| er.encoded = 0; |
| |
| buf = st->buf; |
| end = buf + st->size - 1; /* Last byte is special */ |
| |
| /* |
| * Binary dump |
| */ |
| for(; buf < end; buf++) { |
| int v = *buf; |
| int nline = xcan?0:(((buf - st->buf) % 8) == 0); |
| if(p >= scend || nline) { |
| er.encoded += p - scratch; |
| _ASN_CALLBACK(scratch, p - scratch); |
| p = scratch; |
| if(nline) _i_ASN_TEXT_INDENT(1, ilevel); |
| } |
| memcpy(p + 0, _bit_pattern[v >> 4], 4); |
| memcpy(p + 4, _bit_pattern[v & 0x0f], 4); |
| p += 8; |
| } |
| |
| if(!xcan && ((buf - st->buf) % 8) == 0) |
| _i_ASN_TEXT_INDENT(1, ilevel); |
| er.encoded += p - scratch; |
| _ASN_CALLBACK(scratch, p - scratch); |
| p = scratch; |
| |
| if(buf == end) { |
| int v = *buf; |
| int ubits = st->bits_unused; |
| int i; |
| for(i = 7; i >= ubits; i--) |
| *p++ = (v & (1 << i)) ? 0x31 : 0x30; |
| er.encoded += p - scratch; |
| _ASN_CALLBACK(scratch, p - scratch); |
| } |
| |
| if(!xcan) _i_ASN_TEXT_INDENT(1, ilevel - 1); |
| |
| return er; |
| cb_failed: |
| _ASN_ENCODE_FAILED; |
| } |
| |
| |
| /* |
| * BIT STRING specific contents printer. |
| */ |
| int |
| BIT_STRING_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| static const char *h2c = "0123456789ABCDEF"; |
| char scratch[64]; |
| const BIT_STRING_t *st = (const BIT_STRING_t *)sptr; |
| uint8_t *buf; |
| uint8_t *end; |
| char *p = scratch; |
| |
| (void)td; /* Unused argument */ |
| |
| if(!st || !st->buf) |
| return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
| |
| ilevel++; |
| buf = st->buf; |
| end = buf + st->size; |
| |
| /* |
| * Hexadecimal dump. |
| */ |
| for(; buf < end; buf++) { |
| if((buf - st->buf) % 16 == 0 && (st->size > 16) |
| && buf != st->buf) { |
| _i_INDENT(1); |
| /* Dump the string */ |
| if(cb(scratch, p - scratch, app_key) < 0) return -1; |
| p = scratch; |
| } |
| *p++ = h2c[*buf >> 4]; |
| *p++ = h2c[*buf & 0x0F]; |
| *p++ = 0x20; |
| } |
| |
| if(p > scratch) { |
| p--; /* Eat the tailing space */ |
| |
| if((st->size > 16)) { |
| _i_INDENT(1); |
| } |
| |
| /* Dump the incomplete 16-bytes row */ |
| if(cb(scratch, p - scratch, app_key) < 0) |
| return -1; |
| } |
| |
| return 0; |
| } |
| |