port/merge Eurecom APER support from OPENAIRMME
Eurecom has developed APER support for asn1c as part of the OPENAIRMME
softare (a LTE MME). This is too important to let it bit-rout out
of asn1c. Let's forward-port and merge it.
diff --git a/skeletons/constr_SET_OF.c b/skeletons/constr_SET_OF.c
index b68d7ca..bc29455 100644
--- a/skeletons/constr_SET_OF.c
+++ b/skeletons/constr_SET_OF.c
@@ -884,7 +884,7 @@
if(!st) {
st = *sptr = CALLOC(1, specs->struct_size);
if(!st) _ASN_DECODE_FAILED;
- }
+ }
list = _A_SET_FROM_VOID(st);
/* Figure out which constraints to use */
@@ -901,7 +901,7 @@
if(ct && ct->effective_bits >= 0) {
/* X.691, #19.5: No length determinant */
nelems = per_get_few_bits(pd, ct->effective_bits);
- ASN_DEBUG("Preparing to fetch %ld+%ld elements from %s",
+ ASN_DEBUG("Preparing to fetch %ld+%lld elements from %s",
(long)nelems, ct->lower_bound, td->name);
if(nelems < 0) _ASN_DECODE_STARVED;
nelems += ct->lower_bound;
@@ -951,3 +951,91 @@
return rv;
}
+asn_dec_rval_t
+SET_OF_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_dec_rval_t rv;
+ asn_SET_OF_specifics_t *specs = (asn_SET_OF_specifics_t *)td->specifics;
+ asn_TYPE_member_t *elm = td->elements; /* Single one */
+ void *st = *sptr;
+ asn_anonymous_set_ *list;
+ asn_per_constraint_t *ct;
+ int repeat = 0;
+ ssize_t nelems;
+
+ if(_ASN_STACK_OVERFLOW_CHECK(opt_codec_ctx))
+ _ASN_DECODE_FAILED;
+
+ /*
+ * Create the target structure if it is not present already.
+ */
+ if(!st) {
+ st = *sptr = CALLOC(1, specs->struct_size);
+ if(!st) _ASN_DECODE_FAILED;
+ }
+ list = _A_SET_FROM_VOID(st);
+
+ /* Figure out which constraints to use */
+ if(constraints) ct = &constraints->size;
+ else if(td->per_constraints) ct = &td->per_constraints->size;
+ else ct = 0;
+
+ if(ct && ct->flags & APC_EXTENSIBLE) {
+ int value = per_get_few_bits(pd, 1);
+ if(value < 0) _ASN_DECODE_STARVED;
+ if(value) ct = 0; /* Not restricted! */
+ }
+
+ if(ct && ct->effective_bits >= 0) {
+ /* X.691, #19.5: No length determinant */
+// nelems = per_get_few_bits(pd, ct->effective_bits);
+ nelems = aper_get_nsnnwn(pd, ct->upper_bound - ct->lower_bound);
+ ASN_DEBUG("Preparing to fetch %ld+%lld elements from %s",
+ (long)nelems, ct->lower_bound, td->name);
+ if(nelems < 0) _ASN_DECODE_STARVED;
+ nelems += ct->lower_bound;
+ } else {
+ nelems = -1;
+ }
+
+ do {
+ int i;
+ if(nelems < 0) {
+ nelems = aper_get_length(pd, ct ? ct->upper_bound - ct->lower_bound + 1 : -1,
+ ct ? ct->effective_bits : -1, &repeat);
+ ASN_DEBUG("Got to decode %d elements (eff %d)",
+ (int)nelems, (int)ct ? ct->effective_bits : -1);
+ if(nelems < 0) _ASN_DECODE_STARVED;
+ }
+
+ for(i = 0; i < nelems; i++) {
+ void *ptr = 0;
+ ASN_DEBUG("SET OF %s decoding", elm->type->name);
+ rv = elm->type->aper_decoder(opt_codec_ctx, elm->type,
+ elm->per_constraints, &ptr, pd);
+ ASN_DEBUG("%s SET OF %s decoded %d, %p",
+ td->name, elm->type->name, rv.code, ptr);
+ if(rv.code == RC_OK) {
+ if(ASN_SET_ADD(list, ptr) == 0)
+ continue;
+ ASN_DEBUG("Failed to add element into %s",
+ td->name);
+ /* Fall through */
+ rv.code = RC_FAIL;
+ } else {
+ ASN_DEBUG("Failed decoding %s of %s (SET OF)",
+ elm->type->name, td->name);
+ }
+ if(ptr) ASN_STRUCT_FREE(*elm->type, ptr);
+ return rv;
+ }
+
+ nelems = -1; /* Allow uper_get_length() */
+ } while(repeat);
+
+ ASN_DEBUG("Decoded %s as SET OF", td->name);
+
+ rv.code = RC_OK;
+ rv.consumed = 0;
+ return rv;
+}