numericstring.c

RSA加密/解密算法源码 asn1c-0.9.12

/*-
 * Copyright (c) 2003 Lev Walkin <[e-mail]>. All rights reserved.
 * Redistribution and modifications are permitted subject to BSD license.
 */
#include <asn_internal.h>
#include <NumericString.h>

/*
 * NumericString basic type description.
 */
static ber_tlv_tag_t asn_DEF_NumericString_tags[] = {
	(ASN_TAG_CLASS_UNIVERSAL | (18 << 2)),	/* [UNIVERSAL 18] IMPLICIT ...*/
	(ASN_TAG_CLASS_UNIVERSAL | (4 << 2))	/* ... OCTET STRING */
};
asn_TYPE_descriptor_t asn_DEF_NumericString = {
	"NumericString",
	"NumericString",
	OCTET_STRING_free,
	OCTET_STRING_print_utf8,   /* ASCII subset */
	NumericString_constraint,
	OCTET_STRING_decode_ber,    /* Implemented in terms of OCTET STRING */
	OCTET_STRING_encode_der,
	OCTET_STRING_decode_xer_utf8,
	OCTET_STRING_encode_xer_utf8,
	0, /* Use generic outmost tag fetcher */
	asn_DEF_NumericString_tags,
	sizeof(asn_DEF_NumericString_tags)
	  / sizeof(asn_DEF_NumericString_tags[0]) - 1,
	asn_DEF_NumericString_tags,
	sizeof(asn_DEF_NumericString_tags)
	  / sizeof(asn_DEF_NumericString_tags[0]),
	0, 0,	/* No members */
	0	/* No specifics */
};

int
NumericString_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
		asn_app_consume_bytes_f *app_errlog, void *app_key) {
	const NumericString_t *st = (const NumericString_t *)sptr;

	if(st && st->buf) {
		uint8_t *buf = st->buf;
		uint8_t *end = buf + st->size;

		/*
		 * Check the alphabet of the NumericString.
		 * ASN.1:1984 (X.409)
		 */
		for(; buf < end; buf++) {
			switch(*buf) {
			case 0x20:
			case 0x30: case 0x31: case 0x32: case 0x33: case 0x34:
			case 0x35: case 0x36: case 0x37: case 0x38: case 0x39:
				continue;
			}
			_ASN_ERRLOG(app_errlog, app_key,
				"%s: value byte %ld (%d) "
				"not in NumericString alphabet (%s:%d)",
				td->name,
				(long)((buf - st->buf) + 1),
				*buf,
				__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;
}