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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 2005, 2006, 2007 Lev Walkin <vlm@lionet.info>.
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* Copyright (c) 2005-2014 Lev Walkin <vlm@lionet.info>.
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* All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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@ -15,7 +15,7 @@ extern "C" {
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/*
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* Pre-computed PER constraints.
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*/
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typedef struct asn_per_constraint_s {
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typedef const struct asn_per_constraint_s {
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enum asn_per_constraint_flags {
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APC_UNCONSTRAINED = 0x0, /* No PER visible constraints */
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APC_SEMI_CONSTRAINED = 0x1, /* Constrained at "lb" */
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@ -24,12 +24,12 @@ typedef struct asn_per_constraint_s {
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} flags;
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int range_bits; /* Full number of bits in the range */
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int effective_bits; /* Effective bits */
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long lower_bound; /* "lb" value */
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long upper_bound; /* "ub" value */
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int64_t lower_bound; /* "lb" value */
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int64_t upper_bound; /* "ub" value */
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} asn_per_constraint_t;
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typedef struct asn_per_constraints_s {
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asn_per_constraint_t value;
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asn_per_constraint_t size;
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typedef const struct asn_per_constraints_s {
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struct asn_per_constraint_s value;
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struct asn_per_constraint_s size;
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int (*value2code)(unsigned int value);
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int (*code2value)(unsigned int code);
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} asn_per_constraints_t;
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@ -39,9 +39,9 @@ typedef struct asn_per_constraints_s {
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*/
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typedef struct asn_per_data_s {
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const uint8_t *buffer; /* Pointer to the octet stream */
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size_t nboff; /* Bit offset to the meaningful bit */
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size_t nbits; /* Number of bits in the stream */
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size_t moved; /* Number of bits moved through this bit stream */
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size_t nboff; /* Bit offset to the meaningful bit */
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size_t nbits; /* Number of bits in the stream */
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size_t moved; /* Number of bits moved through this bit stream */
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int (*refill)(struct asn_per_data_s *);
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void *refill_key;
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} asn_per_data_t;
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@ -71,15 +71,25 @@ ssize_t uper_get_length(asn_per_data_t *pd,
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int effective_bound_bits,
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int *repeat);
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ssize_t aper_get_length(asn_per_data_t *pd,
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int range,
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int effective_bound_bits,
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int *repeat);
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/*
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* Get the normally small length "n".
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*/
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ssize_t uper_get_nslength(asn_per_data_t *pd);
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ssize_t aper_get_nslength(asn_per_data_t *pd);
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/*
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* Get the normally small non-negative whole number.
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*/
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ssize_t uper_get_nsnnwn(asn_per_data_t *pd);
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ssize_t aper_get_nsnnwn(asn_per_data_t *pd, int range);
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/* X.691-2008/11, #11.5.6 */
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int uper_get_constrained_whole_number(asn_per_data_t *pd, unsigned long *v, int nbits);
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/* Non-thread-safe debugging function, don't use it */
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char *per_data_string(asn_per_data_t *pd);
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@ -103,6 +113,14 @@ int per_put_few_bits(asn_per_outp_t *per_data, uint32_t bits, int obits);
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/* Output a large number of bits */
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int per_put_many_bits(asn_per_outp_t *po, const uint8_t *src, int put_nbits);
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/* X.691-2008/11, #11.5 */
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int uper_put_constrained_whole_number_s(asn_per_outp_t *po, long v, int nbits);
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int uper_put_constrained_whole_number_u(asn_per_outp_t *po, unsigned long v, int nbits);
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/* Align the current bit position to octet bundary */
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int aper_put_align(asn_per_outp_t *po);
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int32_t aper_get_align(asn_per_data_t *pd);
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/*
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* Put the length "n" to the Unaligned PER stream.
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* This function returns the number of units which may be flushed
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@ -110,17 +128,23 @@ int per_put_many_bits(asn_per_outp_t *po, const uint8_t *src, int put_nbits);
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*/
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ssize_t uper_put_length(asn_per_outp_t *po, size_t whole_length);
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ssize_t aper_put_length(asn_per_outp_t *po, int range, size_t length);
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/*
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* Put the normally small length "n" to the Unaligned PER stream.
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* Returns 0 or -1.
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*/
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int uper_put_nslength(asn_per_outp_t *po, size_t length);
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int aper_put_nslength(asn_per_outp_t *po, size_t length);
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/*
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* Put the normally small non-negative whole number.
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*/
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int uper_put_nsnnwn(asn_per_outp_t *po, int n);
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int aper_put_nsnnwn(asn_per_outp_t *po, int range, int number);
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#ifdef __cplusplus
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}
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#endif
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