2 * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
3 * Redistribution and modifications are permitted subject to BSD license.
8 #include <asn_system.h> /* Platform-specific types */
15 * Pre-computed OER constraints.
17 typedef struct asn_oer_constraint_number_s {
18 unsigned width; /* ±8,4,2,1 fixed bytes */
19 unsigned positive; /* 1 for unsigned number, 0 for signed */
20 } asn_oer_constraint_number_t;
21 typedef struct asn_oer_constraints_s {
22 asn_oer_constraint_number_t value;
23 ssize_t size; /* -1 (no constraint) or >= 0 */
24 } asn_oer_constraints_t;
28 * Fetch the length determinant (X.696 (08/2015), #8.6) into *len_r.
30 * 0: More data expected than bufptr contains.
31 * -1: Fatal error deciphering length.
32 * >0: Number of bytes used from bufptr.
34 ssize_t oer_fetch_length(const void *bufptr, size_t size, size_t *len_r);
37 * Serialize OER length. Returns the number of bytes serialized
38 * or -1 if a given callback returned with negative result.
40 ssize_t oer_serialize_length(size_t length, asn_app_consume_bytes_f *cb, void *app_key);
47 #endif /* OER_SUPPORT_H */