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/*-
* Copyright (c) 2004, 2006 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(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)(
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_ */
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