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64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
10 years ago
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/*-
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* Copyright (c) 2004, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#ifndef _ASN1_CONSTRAINTS_VALIDATOR_H_
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#define _ASN1_CONSTRAINTS_VALIDATOR_H_
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#include <asn_system.h> /* Platform-dependent types */
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct asn_TYPE_descriptor_s; /* Forward declaration */
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/*
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* Validate the structure according to the ASN.1 constraints.
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* If errbuf and errlen are given, they shall be pointing to the appropriate
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* buffer space and its length before calling this function. Alternatively,
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* they could be passed as NULL's. If constraints validation fails,
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* errlen will contain the actual number of bytes taken from the errbuf
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* to encode an error message (properly 0-terminated).
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*
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* RETURN VALUES:
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* This function returns 0 in case all ASN.1 constraints are met
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* and -1 if one or more constraints were failed.
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*/
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int
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asn_check_constraints(struct asn_TYPE_descriptor_s *type_descriptor,
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const void *struct_ptr, /* Target language's structure */
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char *errbuf, /* Returned error description */
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size_t *errlen /* Length of the error description */
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);
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/*
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* Generic type for constraint checking callback,
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* associated with every type descriptor.
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*/
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typedef int (asn_constr_check_f)(
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struct asn_TYPE_descriptor_s *type_descriptor,
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const void *struct_ptr,
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asn_app_constraint_failed_f *optional_callback, /* Log the error */
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void *optional_app_key /* Opaque key passed to a callback */
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);
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/*******************************
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* INTERNALLY USEFUL FUNCTIONS *
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*******************************/
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asn_constr_check_f asn_generic_no_constraint; /* No constraint whatsoever */
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asn_constr_check_f asn_generic_unknown_constraint; /* Not fully supported */
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/*
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* Invoke the callback with a complete error message.
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*/
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#define _ASN_CTFAIL if(ctfailcb) ctfailcb
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ASN1_CONSTRAINTS_VALIDATOR_H_ */
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