| /*- |
| * 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; |
| |
| /* |
| * BER tag to element number mapping. |
| */ |
| typedef struct asn1_TYPE_tag2member_s { |
| ber_tlv_tag_t el_tag; /* Outmost tag of the member */ |
| int el_no; /* Index of the associated member, base 0 */ |
| int toff_first; /* First occurence of the el_tag, relative */ |
| int toff_last; /* Last occurence of the el_tag, relatvie */ |
| } asn1_TYPE_tag2member_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_ */ |