--- /dev/null
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <NativeEnumerated.h>
+
+asn_dec_rval_t
+NativeEnumerated_decode_aper(const asn_codec_ctx_t *opt_codec_ctx,
+ const asn_TYPE_descriptor_t *td,
+ const asn_per_constraints_t *constraints,
+ void **sptr, asn_per_data_t *pd) {
+ const asn_INTEGER_specifics_t *specs = (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_dec_rval_t rval = { RC_OK, 0 };
+ long *native = (long *)*sptr;
+ const asn_per_constraint_t *ct;
+ long value;
+
+ (void)opt_codec_ctx;
+
+ if(constraints) ct = &constraints->value;
+ else if(td->encoding_constraints.per_constraints)
+ ct = &td->encoding_constraints.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;
+ }
+
+ /* Deal with APER padding */
+ if(ct && ct->upper_bound >= 255) {
+ int padding = 0;
+ padding = (8 - (pd->moved % 8)) % 8;
+ ASN_DEBUG("For NativeEnumerated %s,offset = %zu Padding bits = %d",
+ td->name, pd->moved, padding);
+ ASN_DEBUG("For NativeEnumerated %s, upper bound = %llu",
+ td->name, (unsigned long long)ct->upper_bound);
+ if(padding > 0)
+ per_get_few_bits(pd, padding);
+ }
+
+ 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;
+ */
+
+ /* XXX handle indefinite index length > 64k */
+ value = aper_get_nsnnwn(pd, 65537);
+ if(value < 0) ASN__DECODE_STARVED;
+ value += specs->extension - 1;
+ //if(value >= specs->map_count)
+ // ASN__DECODE_FAILED;
+ if(value >= specs->map_count) {
+ ASN_DEBUG("Decoded unknown index value %s = %ld", td->name, value);
+ /* unknown index. Workaround => set the first enumeration value */
+ *native = specs->value2enum[0].nat_value;
+ return rval;
+ }
+ }
+
+ *native = specs->value2enum[value].nat_value;
+ ASN_DEBUG("Decoded %s = %ld", td->name, *native);
+
+ return rval;
+}
+
+asn_enc_rval_t
+NativeEnumerated_encode_aper(const asn_TYPE_descriptor_t *td,
+ const asn_per_constraints_t *constraints,
+ const void *sptr, asn_per_outp_t *po) {
+ const asn_INTEGER_specifics_t *specs = (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_enc_rval_t er = {0,0,0};
+ long native, value;
+ const asn_per_constraint_t *ct;
+ int inext = 0, range_bits = 1;
+ 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->encoding_constraints.per_constraints)
+ ct = &td->encoding_constraints.per_constraints->value;
+ else ASN__ENCODE_FAILED; /* Mandatory! */
+
+ ASN_DEBUG("Encoding %s as NativeEnumerated", td->name);
+
+ er.encoded = 0;
+
+ native = *(const 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) range_bits = 0;
+ } else if(inext) {
+ ASN__ENCODE_FAILED;
+ }
+
+ if(range_bits && 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(aper_put_nsnnwn(po,
+ ct->upper_bound - ct->lower_bound + 1,
+ value - (inext ? (specs->extension - 1) : 0)))
+ ASN__ENCODE_FAILED;
+
+ ASN__ENCODED_OK(er);
+}