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Diffstat (limited to 'skeletons/constr_TYPE.h')
| -rw-r--r-- | skeletons/constr_TYPE.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/skeletons/constr_TYPE.h b/skeletons/constr_TYPE.h new file mode 100644 index 00000000..c7cfb22b --- /dev/null +++ b/skeletons/constr_TYPE.h @@ -0,0 +1,98 @@ +/*- + * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. + * Redistribution and modifications are permitted subject to BSD license. + */ +#ifndef _CONSTR_TYPE_H_ +#define _CONSTR_TYPE_H_ + +#include <asn_types.h> /* System-dependent types */ +#include <ber_tlv_length.h> +#include <ber_tlv_tag.h> +#include <ber_decoder.h> +#include <der_encoder.h> +#include <constraints.h> + +struct asn1_TYPE_descriptor_s; /* Forward declaration */ + +/* + * Free the structure according to its specification. + * If (free_contents_only) is set, the wrapper structure itself (struct_ptr) + * will not be freed. (It may be useful in case the structure is allocated + * statically or arranged on the stack, yet its elements are allocated + * dynamically.) + */ +typedef void (asn_struct_free_f)( + struct asn1_TYPE_descriptor_s *type_descriptor, + void *struct_ptr, int free_contents_only); + +/* + * Print the structure according to its specification. + */ +typedef int (asn_struct_print_f)( + struct asn1_TYPE_descriptor_s *type_descriptor, + const void *struct_ptr, + int level, /* Indentation level */ + asn_app_consume_bytes_f *callback, void *app_key); + +/* + * Return the outmost tag of the type. + * If the type is untagged CHOICE, the dynamic operation is performed. + * NOTE: This function pointer type is only useful internally. + * Do not use it in your application. + */ +typedef ber_tlv_tag_t (asn_outmost_tag_f)( + struct asn1_TYPE_descriptor_s *type_descriptor, + const void *struct_ptr, int tag_mode, ber_tlv_tag_t tag); +/* The instance of the above function type */ +asn_outmost_tag_f asn1_TYPE_outmost_tag; + + +/* + * The definitive description of the destination language's structure. + */ +typedef struct asn1_TYPE_descriptor_s { + char *name; /* A name of the ASN.1 type */ + + /* + * Generalized functions for dealing with the specific type. + * May be directly invoked by applications. + */ + asn_constr_check_f *check_constraints; /* Constraints validator */ + ber_type_decoder_f *ber_decoder; /* Free-form BER decoder */ + der_type_encoder_f *der_encoder; /* Canonical DER encoder */ + asn_struct_print_f *print_struct; /* Human readable output */ + asn_struct_free_f *free_struct; /* Free the structure */ + + /* + * Functions used internally. Should not be used by applications. + */ + asn_outmost_tag_f *outmost_tag; /* <optional, internal> */ + + /* + * Tags that are expected, with some of their vital properties. + */ + ber_tlv_tag_t *tags; /* At least one tag must be specified */ + int tags_count; /* Number of tags which are expected */ + int tags_impl_skip; /* Tags to skip in implicit mode */ + int last_tag_form; /* Acceptable form of the tag (prim, constr) */ + + /* + * Additional information describing the type, used by appropriate + * functions above. + */ + void *specifics; +} asn1_TYPE_descriptor_t; + +/* + * This function is a wrapper around (td)->print_struct, which prints out + * the contents of the target language's structure (struct_ptr) into the + * file pointer (stream) in human readable form. + * RETURN VALUES: + * 0: The structure is printed. + * -1: Problem dumping the structure. + */ +int asn_fprint(FILE *stream, /* Destination stream descriptor */ + asn1_TYPE_descriptor_t *td, /* ASN.1 type descriptor */ + const void *struct_ptr); /* Structure to be printed */ + +#endif /* _CONSTR_TYPE_H_ */ |