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/*-
* Copyright (c) 2004, 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
/*
* Read the NativeInteger.h for the explanation wrt. differences between
* INTEGER and NativeInteger.
* Basically, both are decoders and encoders of ASN.1 INTEGER type, but this
* implementation deals with the standard (machine-specific) representation
* of them instead of using the platform-independent buffer.
*/
#include <asn_internal.h>
#include <NativeEnumerated.h>
/*
* NativeEnumerated basic type description.
*/
static const ber_tlv_tag_t asn_DEF_NativeEnumerated_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (10 << 2))
};
asn_TYPE_descriptor_t asn_DEF_NativeEnumerated = {
"ENUMERATED", /* The ASN.1 type is still ENUMERATED */
"ENUMERATED",
NativeInteger_free,
NativeEnumerated_print,
asn_generic_no_constraint,
NativeInteger_decode_ber,
NativeInteger_encode_der,
NativeInteger_decode_xer,
NativeEnumerated_encode_xer,
NativeEnumerated_decode_uper,
NativeEnumerated_encode_uper,
NativeEnumerated_decode_aper,
NativeEnumerated_encode_aper,
0, /* Use generic outmost tag fetcher */
asn_DEF_NativeEnumerated_tags,
sizeof(asn_DEF_NativeEnumerated_tags) / sizeof(asn_DEF_NativeEnumerated_tags[0]),
asn_DEF_NativeEnumerated_tags, /* Same as above */
sizeof(asn_DEF_NativeEnumerated_tags) / sizeof(asn_DEF_NativeEnumerated_tags[0]),
0, /* No PER visible constraints */
0, 0, /* No members */
0 /* No specifics */
};
asn_enc_rval_t
NativeEnumerated_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
int ilevel, enum xer_encoder_flags_e flags,
asn_app_consume_bytes_f *cb, void *app_key) {
asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
asn_enc_rval_t er;
const long *native = (const long *)sptr;
const asn_INTEGER_enum_map_t *el;
(void)ilevel;
(void)flags;
if(!native) _ASN_ENCODE_FAILED;
el = INTEGER_map_value2enum(specs, *native);
if(el) {
size_t srcsize = el->enum_len + 5;
char *src = (char *)alloca(srcsize);
er.encoded = snprintf(src, srcsize, "<%s/>", el->enum_name);
assert(er.encoded > 0 && (size_t)er.encoded < srcsize);
if(cb(src, er.encoded, app_key) < 0) _ASN_ENCODE_FAILED;
_ASN_ENCODED_OK(er);
} else {
ASN_DEBUG("ASN.1 forbids dealing with "
"unknown value of ENUMERATED type");
_ASN_ENCODE_FAILED;
}
}
asn_dec_rval_t
NativeEnumerated_decode_uper(asn_codec_ctx_t *opt_codec_ctx,
asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints,
void **sptr, asn_per_data_t *pd) {
asn_INTEGER_specifics_t *specs = (asn_INTEGER_specifics_t *)td->specifics;
asn_dec_rval_t rval = { RC_OK, 0 };
long *native = (long *)*sptr;
asn_per_constraint_t *ct;
long value;
(void)opt_codec_ctx;
if(constraints) ct = &constraints->value;
else if(td->per_constraints) ct = &td->per_constraints->value;
else _ASN_DECODE_FAILED; /* Mandatory! */
if(!specs) _ASN_DECODE_FAILED;
if(!native) {
native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
if(!native) _ASN_DECODE_FAILED;
}
ASN_DEBUG("Decoding %s as NativeEnumerated", td->name);
if(ct->flags & APC_EXTENSIBLE) {
int inext = per_get_few_bits(pd, 1);
if(inext < 0) _ASN_DECODE_STARVED;
if(inext) ct = 0;
}
if(ct && ct->range_bits >= 0) {
value = per_get_few_bits(pd, ct->range_bits);
if(value < 0) _ASN_DECODE_STARVED;
if(value >= (specs->extension
? specs->extension - 1 : specs->map_count))
_ASN_DECODE_FAILED;
} else {
if(!specs->extension)
_ASN_DECODE_FAILED;
/*
* X.691, #10.6: normally small non-negative whole number;
*/
value = uper_get_nsnnwn(pd);
if(value < 0) _ASN_DECODE_STARVED;
value += specs->extension - 1;
if(value >= specs->map_count)
_ASN_DECODE_FAILED;
}
*native = specs->value2enum[value].nat_value;
ASN_DEBUG("Decoded %s = %ld", td->name, *native);
return rval;
}
asn_dec_rval_t
NativeEnumerated_decode_aper(asn_codec_ctx_t *opt_codec_ctx,
asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints,
void **sptr, asn_per_data_t *pd) {
asn_INTEGER_specifics_t *specs = (asn_INTEGER_specifics_t *)td->specifics;
asn_dec_rval_t rval = { RC_OK, 0 };
long *native = (long *)*sptr;
asn_per_constraint_t *ct;
long value;
(void)opt_codec_ctx;
if(constraints) ct = &constraints->value;
else if(td->per_constraints) ct = &td->per_constraints->value;
else _ASN_DECODE_FAILED; /* Mandatory! */
if(!specs) _ASN_DECODE_FAILED;
if(!native) {
native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
if(!native) _ASN_DECODE_FAILED;
}
ASN_DEBUG("Decoding %s as NativeEnumerated", td->name);
if(ct->flags & APC_EXTENSIBLE) {
int inext = per_get_few_bits(pd, 1);
if(inext < 0) _ASN_DECODE_STARVED;
if(inext) ct = 0;
}
if(ct && ct->range_bits >= 0) {
value = per_get_few_bits(pd, ct->range_bits);
if(value < 0) _ASN_DECODE_STARVED;
if(value >= (specs->extension
? specs->extension - 1 : specs->map_count))
_ASN_DECODE_FAILED;
} else {
if(!specs->extension)
_ASN_DECODE_FAILED;
/*
* X.691, #10.6: normally small non-negative whole number;
*/
value = uper_get_nsnnwn(pd);
if(value < 0) _ASN_DECODE_STARVED;
value += specs->extension - 1;
if(value >= specs->map_count)
_ASN_DECODE_FAILED;
}
*native = specs->value2enum[value].nat_value;
ASN_DEBUG("Decoded %s = %ld", td->name, *native);
return rval;
}
static int
NativeEnumerated__compar_value2enum(const void *ap, const void *bp) {
const asn_INTEGER_enum_map_t *a = ap;
const asn_INTEGER_enum_map_t *b = bp;
if(a->nat_value == b->nat_value)
return 0;
if(a->nat_value < b->nat_value)
return -1;
return 1;
}
asn_enc_rval_t
NativeEnumerated_encode_uper(asn_TYPE_descriptor_t *td,
asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) {
asn_INTEGER_specifics_t *specs = (asn_INTEGER_specifics_t *)td->specifics;
asn_enc_rval_t er;
long native, value;
asn_per_constraint_t *ct;
int inext = 0;
asn_INTEGER_enum_map_t key;
const asn_INTEGER_enum_map_t *kf;
if(!sptr) _ASN_ENCODE_FAILED;
if(!specs) _ASN_ENCODE_FAILED;
if(constraints) ct = &constraints->value;
else if(td->per_constraints) ct = &td->per_constraints->value;
else _ASN_ENCODE_FAILED; /* Mandatory! */
ASN_DEBUG("Encoding %s as NativeEnumerated", td->name);
er.encoded = 0;
native = *(long *)sptr;
if(native < 0) _ASN_ENCODE_FAILED;
key.nat_value = native;
kf = bsearch(&key, specs->value2enum, specs->map_count,
sizeof(key), NativeEnumerated__compar_value2enum);
if(!kf) {
ASN_DEBUG("No element corresponds to %ld", native);
_ASN_ENCODE_FAILED;
}
value = kf - specs->value2enum;
if(ct->range_bits >= 0) {
int cmpWith = specs->extension
? specs->extension - 1 : specs->map_count;
if(value >= cmpWith)
inext = 1;
}
if(ct->flags & APC_EXTENSIBLE) {
if(per_put_few_bits(po, inext, 1))
_ASN_ENCODE_FAILED;
if(inext) ct = 0;
} else if(inext) {
_ASN_ENCODE_FAILED;
}
if(ct && ct->range_bits >= 0) {
if(per_put_few_bits(po, value, ct->range_bits))
_ASN_ENCODE_FAILED;
_ASN_ENCODED_OK(er);
}
if(!specs->extension)
_ASN_ENCODE_FAILED;
/*
* X.691, #10.6: normally small non-negative whole number;
*/
ASN_DEBUG("value = %ld, ext = %d, inext = %d, res = %ld",
value, specs->extension, inext,
value - (inext ? (specs->extension - 1) : 0));
if(uper_put_nsnnwn(po, value - (inext ? (specs->extension - 1) : 0)))
_ASN_ENCODE_FAILED;
_ASN_ENCODED_OK(er);
}
asn_enc_rval_t
NativeEnumerated_encode_aper(asn_TYPE_descriptor_t *td,
asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) {
asn_INTEGER_specifics_t *specs = (asn_INTEGER_specifics_t *)td->specifics;
asn_enc_rval_t er;
long native, value;
asn_per_constraint_t *ct;
int inext = 0;
asn_INTEGER_enum_map_t key;
asn_INTEGER_enum_map_t *kf;
if(!sptr) _ASN_ENCODE_FAILED;
if(!specs) _ASN_ENCODE_FAILED;
if(constraints) ct = &constraints->value;
else if(td->per_constraints) ct = &td->per_constraints->value;
else _ASN_ENCODE_FAILED; /* Mandatory! */
ASN_DEBUG("Encoding %s as NativeEnumerated", td->name);
er.encoded = 0;
native = *(long *)sptr;
if(native < 0) _ASN_ENCODE_FAILED;
key.nat_value = native;
kf = bsearch(&key, specs->value2enum, specs->map_count,
sizeof(key), NativeEnumerated__compar_value2enum);
if(!kf) {
ASN_DEBUG("No element corresponds to %ld", native);
_ASN_ENCODE_FAILED;
}
value = kf - specs->value2enum;
if(ct->range_bits >= 0) {
int cmpWith = specs->extension
? specs->extension - 1 : specs->map_count;
if(value >= cmpWith)
inext = 1;
}
if(ct->flags & APC_EXTENSIBLE) {
if(per_put_few_bits(po, inext, 1))
_ASN_ENCODE_FAILED;
if(inext) ct = 0;
} else if(inext) {
_ASN_ENCODE_FAILED;
}
if(ct && ct->range_bits >= 0) {
if(per_put_few_bits(po, value, ct->range_bits))
_ASN_ENCODE_FAILED;
_ASN_ENCODED_OK(er);
}
if(!specs->extension)
_ASN_ENCODE_FAILED;
/*
* X.691, #10.6: normally small non-negative whole number;
*/
ASN_DEBUG("value = %ld, ext = %d, inext = %d, res = %ld",
value, specs->extension, inext,
value - (inext ? (specs->extension - 1) : 0));
if(uper_put_nsnnwn(po, value - (inext ? (specs->extension - 1) : 0)))
_ASN_ENCODE_FAILED;
_ASN_ENCODED_OK(er);
}
int
NativeEnumerated_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
const long *native = (const long *)sptr;
char scratch[256];
int ret;
(void)td; /* Unused argument */
(void)ilevel; /* Unused argument */
if(native) {
const asn_INTEGER_enum_map_t *map = INTEGER_map_value2enum(specs, *native);
if (map && map->enum_len && map->enum_name) {
ret = snprintf(scratch, sizeof(scratch),
"%s", map->enum_name);
} else {
ret = snprintf(scratch, sizeof(scratch),
(specs && specs->field_unsigned)
? "%lu" : "%ld", *native);
}
assert(ret > 0 && (size_t)ret < sizeof(scratch));
return (cb(scratch, ret, app_key) < 0) ? -1 : 0;
} else {
return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
}
}
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