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/*****************************************************************************
# *
# Copyright 2019 AT&T Intellectual Property *
# *
# Licensed under the Apache License, Version 2.0 (the "License"); *
# you may not use this file except in compliance with the License. *
# You may obtain a copy of the License at *
# *
# http://www.apache.org/licenses/LICENSE-2.0 *
# *
# Unless required by applicable law or agreed to in writing, software *
# distributed under the License is distributed on an "AS IS" BASIS, *
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
# See the License for the specific language governing permissions and *
# limitations under the License. *
# *
******************************************************************************/
/*-
* Copyright (c) 2004-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#ifndef ASN1_CONSTRAINTS_VALIDATOR_H
#define ASN1_CONSTRAINTS_VALIDATOR_H
#include <asn_system.h> /* Platform-dependent types */
#ifdef __cplusplus
extern "C" {
#endif
struct asn_TYPE_descriptor_s; /* Forward declaration */
/*
* Validate the structure according to the ASN.1 constraints.
* If errbuf and errlen are given, they shall be pointing to the appropriate
* buffer space and its length before calling this function. Alternatively,
* they could be passed as NULL's. If constraints validation fails,
* errlen will contain the actual number of bytes taken from the errbuf
* to encode an error message (properly 0-terminated).
*
* RETURN VALUES:
* This function returns 0 in case all ASN.1 constraints are met
* and -1 if one or more constraints were failed.
*/
int asn_check_constraints(
const struct asn_TYPE_descriptor_s *type_descriptor,
const void *struct_ptr, /* Target language's structure */
char *errbuf, /* Returned error description */
size_t *errlen /* Length of the error description */
);
/*
* Generic type for constraint checking callback,
* associated with every type descriptor.
*/
typedef int(asn_constr_check_f)(
const struct asn_TYPE_descriptor_s *type_descriptor, const void *struct_ptr,
asn_app_constraint_failed_f *optional_callback, /* Log the error */
void *optional_app_key /* Opaque key passed to a callback */
);
/*******************************
* INTERNALLY USEFUL FUNCTIONS *
*******************************/
asn_constr_check_f asn_generic_no_constraint; /* No constraint whatsoever */
asn_constr_check_f asn_generic_unknown_constraint; /* Not fully supported */
/*
* Invoke the callback with a complete error message.
*/
#define ASN__CTFAIL if(ctfailcb) ctfailcb
#ifdef __cplusplus
}
#endif
#endif /* ASN1_CONSTRAINTS_VALIDATOR_H */