diff options
Diffstat (limited to 'skeletons/constr_SET.h')
-rw-r--r-- | skeletons/constr_SET.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/skeletons/constr_SET.h b/skeletons/constr_SET.h new file mode 100644 index 00000000..c0ac07f5 --- /dev/null +++ b/skeletons/constr_SET.h @@ -0,0 +1,90 @@ +/*- + * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. + * Redistribution and modifications are permitted subject to BSD license. + */ +#ifndef _CONSTR_SET_H_ +#define _CONSTR_SET_H_ + +#include <constr_TYPE.h> + +/* + * Description of a single element of the SET type. + */ +typedef struct asn1_SET_element_s { + int memb_offset; /* Offset of the element */ + int optional; /* Whether the element is optional */ + ber_tlv_tag_t tag; /* Outmost (most immediate) tag */ + int tag_mode; /* IMPLICIT/no/EXPLICIT tag at current level */ + asn1_TYPE_descriptor_t + *type; /* Member type descriptor */ + char *name; /* ASN.1 identifier of the element */ +} asn1_SET_element_t; + +/* + * Map between the outmost tag of the element and the corresponding + * element's index. + */ +typedef struct asn1_SET_tag2member_s { + ber_tlv_tag_t el_tag; /* Outmost tag of the member */ + int el_no; /* Index of the associated member, base 0 */ +} asn1_SET_tag2member_t; + +typedef struct asn1_SET_specifics_s { + /* + * Target structure description. + */ + int struct_size; /* Size of the target structure. */ + int ctx_offset; /* Offset of the ber_dec_ctx_t member */ + int pres_offset; /* Offset of _presence_map member */ + + /* + * Members of the SET structure. + */ + asn1_SET_element_t *elements; + int elements_count; + + /* + * Tags to members mapping table (sorted). + */ + asn1_SET_tag2member_t *tag2el; + int tag2el_count; + + /* + * Extensions-related stuff. + */ + int extensible; /* Whether SET is extensible */ + unsigned int *_mandatory_elements; /* Bitmask of mandatory ones */ +} asn1_SET_specifics_t; + +/* + * A set specialized functions dealing with the SET type. + */ +asn_constr_check_f SET_constraint; +ber_type_decoder_f SET_decode_ber; +der_type_encoder_f SET_encode_der; +asn_struct_print_f SET_print; +asn_struct_free_f SET_free; + +/*********************** + * Some handy helpers. * + ***********************/ + +/* + * Figure out whether the SET member indicated by PR_x has already been decoded. + * It is very simple bitfield test, despite its visual complexity. + */ +#define ASN_SET_ISPRESENT(set_ptr, PR_x) \ + ASN_SET_ISPRESENT2(&((set_ptr)->_presence_map)) +#define ASN_SET_ISPRESENT2(map_ptr, PR_x) \ + (((unsigned int *)(map_ptr)) \ + [(PR_x) / (8 * sizeof(unsigned int))] \ + & (1 << ((8 * sizeof(unsigned int)) - 1 \ + - ((PR_x) % (8 * sizeof(unsigned int)))))) + +#define ASN_SET_MKPRESENT(map_ptr, PR_x) \ + (((unsigned int *)(map_ptr)) \ + [(PR_x) / (8 * sizeof(unsigned int))] \ + |= (1 << ((8 * sizeof(unsigned int)) - 1 \ + - ((PR_x) % (8 * sizeof(unsigned int)))))) + +#endif /* _CONSTR_SET_H_ */ |