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Diffstat (limited to 'asn1/asn1c/constraints.h')
| -rw-r--r-- | asn1/asn1c/constraints.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/asn1/asn1c/constraints.h b/asn1/asn1c/constraints.h new file mode 100644 index 000000000..5032345ee --- /dev/null +++ b/asn1/asn1c/constraints.h @@ -0,0 +1,63 @@ +/*- + * 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_ */ |