2 * Copyright (c) 2004, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
3 * Redistribution and modifications are permitted subject to BSD license.
5 #ifndef _ASN1_CONSTRAINTS_VALIDATOR_H_
6 #define _ASN1_CONSTRAINTS_VALIDATOR_H_
8 #include <asn_system.h> /* Platform-dependent types */
14 struct asn_TYPE_descriptor_s; /* Forward declaration */
17 * Validate the structure according to the ASN.1 constraints.
18 * If errbuf and errlen are given, they shall be pointing to the appropriate
19 * buffer space and its length before calling this function. Alternatively,
20 * they could be passed as NULL's. If constraints validation fails,
21 * errlen will contain the actual number of bytes taken from the errbuf
22 * to encode an error message (properly 0-terminated).
25 * This function returns 0 in case all ASN.1 constraints are met
26 * and -1 if one or more constraints were failed.
29 asn_check_constraints(struct asn_TYPE_descriptor_s *type_descriptor,
30 const void *struct_ptr, /* Target language's structure */
31 char *errbuf, /* Returned error description */
32 size_t *errlen /* Length of the error description */
37 * Generic type for constraint checking callback,
38 * associated with every type descriptor.
40 typedef int (asn_constr_check_f)(
41 struct asn_TYPE_descriptor_s *type_descriptor,
42 const void *struct_ptr,
43 asn_app_constraint_failed_f *optional_callback, /* Log the error */
44 void *optional_app_key /* Opaque key passed to a callback */
47 /*******************************
48 * INTERNALLY USEFUL FUNCTIONS *
49 *******************************/
51 asn_constr_check_f asn_generic_no_constraint; /* No constraint whatsoever */
52 asn_constr_check_f asn_generic_unknown_constraint; /* Not fully supported */
55 * Invoke the callback with a complete error message.
57 #define _ASN_CTFAIL if(ctfailcb) ctfailcb
63 #endif /* _ASN1_CONSTRAINTS_VALIDATOR_H_ */