asn1/VisibleString.c

   1 /*-
   2  * Copyright (c) 2003, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
   3  * Redistribution and modifications are permitted subject to BSD license.
   4  */
   5 #include <asn_internal.h>
   6 #include <VisibleString.h>
   7
   8 /*
   9  * VisibleString basic type description.
  10  */
  11 static ber_tlv_tag_t asn_DEF_VisibleString_tags[] = {
  12         (ASN_TAG_CLASS_UNIVERSAL | (26 << 2)),  /* [UNIVERSAL 26] IMPLICIT ...*/
  13         (ASN_TAG_CLASS_UNIVERSAL | (4 << 2))    /* ... OCTET STRING */
  14 };
  15 static asn_per_constraints_t asn_DEF_VisibleString_constraints = {
  16         { APC_CONSTRAINED, 7, 7, 0x20, 0x7e },  /* Value */
  17         { APC_SEMI_CONSTRAINED, -1, -1, 0, 0 }, /* Size */
  18         0, 0
  19 };
  20 asn_TYPE_descriptor_t asn_DEF_VisibleString = {
  21         "VisibleString",
  22         "VisibleString",
  23         OCTET_STRING_free,
  24         OCTET_STRING_print_utf8,   /* ASCII subset */
  25         VisibleString_constraint,
  26         OCTET_STRING_decode_ber,    /* Implemented in terms of OCTET STRING */
  27         OCTET_STRING_encode_der,
  28         OCTET_STRING_decode_xer_utf8,
  29         OCTET_STRING_encode_xer_utf8,
  30         OCTET_STRING_decode_uper,
  31         OCTET_STRING_encode_uper,
  32         0, /* Use generic outmost tag fetcher */
  33         asn_DEF_VisibleString_tags,
  34         sizeof(asn_DEF_VisibleString_tags)
  35           / sizeof(asn_DEF_VisibleString_tags[0]) - 1,
  36         asn_DEF_VisibleString_tags,
  37         sizeof(asn_DEF_VisibleString_tags)
  38           / sizeof(asn_DEF_VisibleString_tags[0]),
  39         &asn_DEF_VisibleString_constraints,
  40         0, 0,   /* No members */
  41         0       /* No specifics */
  42 };
  43
  44 int
  45 VisibleString_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
  46                 asn_app_constraint_failed_f *ctfailcb, void *app_key) {
  47         const VisibleString_t *st = (const VisibleString_t *)sptr;
  48
  49         if(st && st->buf) {
  50                 uint8_t *buf = st->buf;
  51                 uint8_t *end = buf + st->size;
  52
  53                 /*
  54                  * Check the alphabet of the VisibleString.
  55                  * ISO646, ISOReg#6
  56                  * The alphabet is a subset of ASCII between the space
  57                  * and "~" (tilde).
  58                  */
  59                 for(; buf < end; buf++) {
  60                         if(*buf < 0x20 || *buf > 0x7e) {
  61                                 _ASN_CTFAIL(app_key, td, sptr,
  62                                         "%s: value byte %ld (%d) "
  63                                         "not in VisibleString alphabet (%s:%d)",
  64                                         td->name,
  65                                         (long)((buf - st->buf) + 1),
  66                                         *buf,
  67                                         __FILE__, __LINE__);
  68                                 return -1;
  69                         }
  70                 }
  71         } else {
  72                 _ASN_CTFAIL(app_key, td, sptr,
  73                         "%s: value not given (%s:%d)",
  74                         td->name, __FILE__, __LINE__);
  75                 return -1;
  76         }
  77
  78         return 0;
  79 }