1 /*- 2 * Copyright (c) 2004-2017 Lev Walkin <vlm@lionet.info>. All rights reserved. 3 * Redistribution and modifications are permitted subject to BSD license. 4 */ 5 #ifndef ASN1_CONSTRAINTS_VALIDATOR_H 6 #define ASN1_CONSTRAINTS_VALIDATOR_H 7 8 #include "asn1/asn1c/asn_system.h" /* Platform-dependent types */ 9 10 #ifdef __cplusplus 11 extern "C" { 12 #endif 13 14 struct asn_TYPE_descriptor_s; /* Forward declaration */ 15 16 /* 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). 23 * 24 * RETURN VALUES: 25 * This function returns 0 in case all ASN.1 constraints are met 26 * and -1 if one or more constraints were failed. 27 */ 28 int asn_check_constraints( 29 const 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 */ 33 ); 34 35 36 /* 37 * Generic type for constraint checking callback, 38 * associated with every type descriptor. 39 */ 40 typedef int(asn_constr_check_f)( 41 const struct asn_TYPE_descriptor_s *type_descriptor, const void *struct_ptr, 42 asn_app_constraint_failed_f *optional_callback, /* Log the error */ 43 void *optional_app_key /* Opaque key passed to a callback */ 44 ); 45 46 /******************************* 47 * INTERNALLY USEFUL FUNCTIONS * 48 *******************************/ 49 50 asn_constr_check_f asn_generic_no_constraint; /* No constraint whatsoever */ 51 asn_constr_check_f asn_generic_unknown_constraint; /* Not fully supported */ 52 53 /* 54 * Invoke the callback with a complete error message. 55 */ 56 #define ASN__CTFAIL if(ctfailcb) ctfailcb 57 58 #ifdef __cplusplus 59 } 60 #endif 61 62 #endif /* ASN1_CONSTRAINTS_VALIDATOR_H */ 63