Enhanced SIM for E2AP v1 for TS UC
[sim/e2-interface.git] / e2sim / e2apv1sim / ASN1c / constr_SET_OF.c
diff --git a/e2sim/e2apv1sim/ASN1c/constr_SET_OF.c b/e2sim/e2apv1sim/ASN1c/constr_SET_OF.c
new file mode 100644 (file)
index 0000000..bf1dc27
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@@ -0,0 +1,1441 @@
+/*
+ * Copyright (c) 2003-2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <constr_SET_OF.h>
+#include <asn_SET_OF.h>
+
+/*
+ * Number of bytes left for this structure.
+ * (ctx->left) indicates the number of bytes _transferred_ for the structure.
+ * (size) contains the number of bytes in the buffer passed.
+ */
+#define        LEFT    ((size<(size_t)ctx->left)?size:(size_t)ctx->left)
+
+/*
+ * If the subprocessor function returns with an indication that it wants
+ * more data, it may well be a fatal decoding problem, because the
+ * size is constrained by the <TLV>'s L, even if the buffer size allows
+ * reading more data.
+ * For example, consider the buffer containing the following TLVs:
+ * <T:5><L:1><V> <T:6>...
+ * The TLV length clearly indicates that one byte is expected in V, but
+ * if the V processor returns with "want more data" even if the buffer
+ * contains way more data than the V processor have seen.
+ */
+#define        SIZE_VIOLATION  (ctx->left >= 0 && (size_t)ctx->left <= size)
+
+/*
+ * This macro "eats" the part of the buffer which is definitely "consumed",
+ * i.e. was correctly converted into local representation or rightfully skipped.
+ */
+#undef ADVANCE
+#define        ADVANCE(num_bytes)      do {            \
+               size_t num = num_bytes;         \
+               ptr = ((const char *)ptr) + num;\
+               size -= num;                    \
+               if(ctx->left >= 0)              \
+                       ctx->left -= num;       \
+               consumed_myself += num;         \
+       } while(0)
+
+/*
+ * Switch to the next phase of parsing.
+ */
+#undef NEXT_PHASE
+#undef PHASE_OUT
+#define        NEXT_PHASE(ctx) do {                    \
+               ctx->phase++;                   \
+               ctx->step = 0;                  \
+       } while(0)
+#define        PHASE_OUT(ctx)  do { ctx->phase = 10; } while(0)
+
+/*
+ * Return a standardized complex structure.
+ */
+#undef RETURN
+#define        RETURN(_code)   do {                    \
+               rval.code = _code;              \
+               rval.consumed = consumed_myself;\
+               return rval;                    \
+       } while(0)
+
+/*
+ * The decoder of the SET OF type.
+ */
+asn_dec_rval_t
+SET_OF_decode_ber(const asn_codec_ctx_t *opt_codec_ctx,
+                  const asn_TYPE_descriptor_t *td, void **struct_ptr,
+                  const void *ptr, size_t size, int tag_mode) {
+    /*
+        * Bring closer parts of structure description.
+        */
+       const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+    const asn_TYPE_member_t *elm = td->elements; /* Single one */
+
+    /*
+        * Parts of the structure being constructed.
+        */
+       void *st = *struct_ptr; /* Target structure. */
+       asn_struct_ctx_t *ctx;  /* Decoder context */
+
+       ber_tlv_tag_t tlv_tag;  /* T from TLV */
+       asn_dec_rval_t rval;    /* Return code from subparsers */
+
+       ssize_t consumed_myself = 0;    /* Consumed bytes from ptr */
+
+       ASN_DEBUG("Decoding %s as SET OF", td->name);
+       
+       /*
+        * Create the target structure if it is not present already.
+        */
+       if(st == 0) {
+               st = *struct_ptr = CALLOC(1, specs->struct_size);
+               if(st == 0) {
+                       RETURN(RC_FAIL);
+               }
+       }
+
+       /*
+        * Restore parsing context.
+        */
+       ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset);
+       
+       /*
+        * Start to parse where left previously
+        */
+       switch(ctx->phase) {
+       case 0:
+               /*
+                * PHASE 0.
+                * Check that the set of tags associated with given structure
+                * perfectly fits our expectations.
+                */
+
+               rval = ber_check_tags(opt_codec_ctx, td, ctx, ptr, size,
+                       tag_mode, 1, &ctx->left, 0);
+               if(rval.code != RC_OK) {
+                       ASN_DEBUG("%s tagging check failed: %d",
+                               td->name, rval.code);
+                       return rval;
+               }
+
+               if(ctx->left >= 0)
+                       ctx->left += rval.consumed; /* ?Substracted below! */
+               ADVANCE(rval.consumed);
+
+               ASN_DEBUG("Structure consumes %ld bytes, "
+                       "buffer %ld", (long)ctx->left, (long)size);
+
+               NEXT_PHASE(ctx);
+               /* Fall through */
+       case 1:
+               /*
+                * PHASE 1.
+                * From the place where we've left it previously,
+                * try to decode the next item.
+                */
+         for(;; ctx->step = 0) {
+               ssize_t tag_len;        /* Length of TLV's T */
+
+               if(ctx->step & 1)
+                       goto microphase2;
+
+               /*
+                * MICROPHASE 1: Synchronize decoding.
+                */
+
+               if(ctx->left == 0) {
+                       ASN_DEBUG("End of SET OF %s", td->name);
+                       /*
+                        * No more things to decode.
+                        * Exit out of here.
+                        */
+                       PHASE_OUT(ctx);
+                       RETURN(RC_OK);
+               }
+
+               /*
+                * Fetch the T from TLV.
+                */
+               tag_len = ber_fetch_tag(ptr, LEFT, &tlv_tag);
+               switch(tag_len) {
+               case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE);
+                       /* Fall through */
+               case -1: RETURN(RC_FAIL);
+               }
+
+               if(ctx->left < 0 && ((const uint8_t *)ptr)[0] == 0) {
+                       if(LEFT < 2) {
+                               if(SIZE_VIOLATION)
+                                       RETURN(RC_FAIL);
+                               else
+                                       RETURN(RC_WMORE);
+                       } else if(((const uint8_t *)ptr)[1] == 0) {
+                               /*
+                                * Found the terminator of the
+                                * indefinite length structure.
+                                */
+                               break;
+                       }
+               }
+
+               /* Outmost tag may be unknown and cannot be fetched/compared */
+               if(elm->tag != (ber_tlv_tag_t)-1) {
+                   if(BER_TAGS_EQUAL(tlv_tag, elm->tag)) {
+                       /*
+                        * The new list member of expected type has arrived.
+                        */
+                   } else {
+                       ASN_DEBUG("Unexpected tag %s fixed SET OF %s",
+                               ber_tlv_tag_string(tlv_tag), td->name);
+                       ASN_DEBUG("%s SET OF has tag %s",
+                               td->name, ber_tlv_tag_string(elm->tag));
+                       RETURN(RC_FAIL);
+                   }
+               }
+
+               /*
+                * MICROPHASE 2: Invoke the member-specific decoder.
+                */
+               ctx->step |= 1;         /* Confirm entering next microphase */
+       microphase2:
+               
+               /*
+                * Invoke the member fetch routine according to member's type
+                */
+               rval = elm->type->op->ber_decoder(opt_codec_ctx,
+                               elm->type, &ctx->ptr, ptr, LEFT, 0);
+               ASN_DEBUG("In %s SET OF %s code %d consumed %d",
+                       td->name, elm->type->name,
+                       rval.code, (int)rval.consumed);
+               switch(rval.code) {
+               case RC_OK:
+                       {
+                               asn_anonymous_set_ *list = _A_SET_FROM_VOID(st);
+                               if(ASN_SET_ADD(list, ctx->ptr) != 0)
+                                       RETURN(RC_FAIL);
+                               else
+                                       ctx->ptr = 0;
+                       }
+                       break;
+               case RC_WMORE: /* More data expected */
+                       if(!SIZE_VIOLATION) {
+                               ADVANCE(rval.consumed);
+                               RETURN(RC_WMORE);
+                       }
+                       /* Fall through */
+               case RC_FAIL: /* Fatal error */
+                       ASN_STRUCT_FREE(*elm->type, ctx->ptr);
+                       ctx->ptr = 0;
+                       RETURN(RC_FAIL);
+               } /* switch(rval) */
+               
+               ADVANCE(rval.consumed);
+         }     /* for(all list members) */
+
+               NEXT_PHASE(ctx);
+       case 2:
+               /*
+                * Read in all "end of content" TLVs.
+                */
+               while(ctx->left < 0) {
+                       if(LEFT < 2) {
+                               if(LEFT > 0 && ((const char *)ptr)[0] != 0) {
+                                       /* Unexpected tag */
+                                       RETURN(RC_FAIL);
+                               } else {
+                                       RETURN(RC_WMORE);
+                               }
+                       }
+                       if(((const char *)ptr)[0] == 0
+                       && ((const char *)ptr)[1] == 0) {
+                               ADVANCE(2);
+                               ctx->left++;
+                       } else {
+                               RETURN(RC_FAIL);
+                       }
+               }
+
+               PHASE_OUT(ctx);
+       }
+       
+       RETURN(RC_OK);
+}
+
+/*
+ * Internally visible buffer holding a single encoded element.
+ */
+struct _el_buffer {
+       uint8_t *buf;
+       size_t length;
+       size_t allocated_size;
+    unsigned bits_unused;
+};
+/* Append bytes to the above structure */
+static int _el_addbytes(const void *buffer, size_t size, void *el_buf_ptr) {
+    struct _el_buffer *el_buf = (struct _el_buffer *)el_buf_ptr;
+
+    if(el_buf->length + size > el_buf->allocated_size) {
+        size_t new_size = el_buf->allocated_size ? el_buf->allocated_size : 8;
+        void *p;
+
+        do {
+            new_size <<= 2;
+        } while(el_buf->length + size > new_size);
+
+        p = REALLOC(el_buf->buf, new_size);
+        if(p) {
+            el_buf->buf = p;
+            el_buf->allocated_size = new_size;
+        } else {
+            return -1;
+        }
+    }
+
+    memcpy(el_buf->buf + el_buf->length, buffer, size);
+
+    el_buf->length += size;
+    return 0;
+}
+
+static void assert_unused_bits(const struct _el_buffer* p) {
+    if(p->length) {
+        assert((p->buf[p->length-1] & ~(0xff << p->bits_unused)) == 0);
+    } else {
+        assert(p->bits_unused == 0);
+    }
+}
+
+static int _el_buf_cmp(const void *ap, const void *bp) {
+    const struct _el_buffer *a = (const struct _el_buffer *)ap;
+    const struct _el_buffer *b = (const struct _el_buffer *)bp;
+    size_t common_len;
+    int ret = 0;
+
+    if(a->length < b->length)
+        common_len = a->length;
+    else
+        common_len = b->length;
+
+    if (a->buf && b->buf) {
+        ret = memcmp(a->buf, b->buf, common_len);
+    }
+    if(ret == 0) {
+        if(a->length < b->length)
+            ret = -1;
+        else if(a->length > b->length)
+            ret = 1;
+        /* Ignore unused bits. */
+        assert_unused_bits(a);
+        assert_unused_bits(b);
+    }
+
+    return ret;
+}
+
+static void
+SET_OF__encode_sorted_free(struct _el_buffer *el_buf, size_t count) {
+    size_t i;
+
+    for(i = 0; i < count; i++) {
+        FREEMEM(el_buf[i].buf);
+    }
+
+    FREEMEM(el_buf);
+}
+
+enum SET_OF__encode_method {
+    SOES_DER,   /* Distinguished Encoding Rules */
+    SOES_CUPER  /* Canonical Unaligned Packed Encoding Rules */
+};
+
+static struct _el_buffer *
+SET_OF__encode_sorted(const asn_TYPE_member_t *elm,
+                      const asn_anonymous_set_ *list,
+                      enum SET_OF__encode_method method) {
+    struct _el_buffer *encoded_els;
+    int edx;
+
+    encoded_els =
+        (struct _el_buffer *)CALLOC(list->count, sizeof(encoded_els[0]));
+    if(encoded_els == NULL) {
+        return NULL;
+    }
+
+       /*
+        * Encode all members.
+        */
+    for(edx = 0; edx < list->count; edx++) {
+        const void *memb_ptr = list->array[edx];
+        struct _el_buffer *encoding_el = &encoded_els[edx];
+        asn_enc_rval_t erval = {0,0,0};
+
+        if(!memb_ptr) break;
+
+        /*
+                * Encode the member into the prepared space.
+                */
+        switch(method) {
+        case SOES_DER:
+            erval = elm->type->op->der_encoder(elm->type, memb_ptr, 0, elm->tag,
+                                               _el_addbytes, encoding_el);
+            break;
+        case SOES_CUPER:
+            erval = uper_encode(elm->type,
+                                elm->encoding_constraints.per_constraints,
+                                memb_ptr, _el_addbytes, encoding_el);
+            if(erval.encoded != -1) {
+                size_t extra_bits = erval.encoded % 8;
+                assert(encoding_el->length == (size_t)(erval.encoded + 7) / 8);
+                encoding_el->bits_unused = (8 - extra_bits) & 0x7;
+            }
+            break;
+        default:
+            assert(!"Unreachable");
+            break;
+        }
+        if(erval.encoded < 0) break;
+       }
+
+    if(edx == list->count) {
+        /*
+         * Sort the encoded elements according to their encoding.
+         */
+        qsort(encoded_els, list->count, sizeof(encoded_els[0]), _el_buf_cmp);
+
+        return encoded_els;
+    } else {
+        SET_OF__encode_sorted_free(encoded_els, edx);
+        return NULL;
+    }
+}
+
+
+/*
+ * The DER encoder of the SET OF type.
+ */
+asn_enc_rval_t
+SET_OF_encode_der(const asn_TYPE_descriptor_t *td, const void *sptr,
+                  int tag_mode, ber_tlv_tag_t tag, asn_app_consume_bytes_f *cb,
+                  void *app_key) {
+    const asn_TYPE_member_t *elm = td->elements;
+    const asn_anonymous_set_ *list = _A_CSET_FROM_VOID(sptr);
+    size_t computed_size = 0;
+    ssize_t encoding_size = 0;
+    struct _el_buffer *encoded_els;
+    int edx;
+
+       ASN_DEBUG("Estimating size for SET OF %s", td->name);
+
+    /*
+     * Gather the length of the underlying members sequence.
+     */
+    for(edx = 0; edx < list->count; edx++) {
+        void *memb_ptr = list->array[edx];
+        asn_enc_rval_t erval = {0,0,0};
+
+        if(!memb_ptr) ASN__ENCODE_FAILED;
+
+        erval =
+            elm->type->op->der_encoder(elm->type, memb_ptr, 0, elm->tag, 0, 0);
+        if(erval.encoded == -1) return erval;
+        computed_size += erval.encoded;
+       }
+
+
+    /*
+     * Encode the TLV for the sequence itself.
+     */
+    encoding_size =
+        der_write_tags(td, computed_size, tag_mode, 1, tag, cb, app_key);
+    if(encoding_size < 0) {
+        ASN__ENCODE_FAILED;
+    }
+    computed_size += encoding_size;
+
+    if(!cb || list->count == 0) {
+        asn_enc_rval_t erval = {0,0,0};
+        erval.encoded = computed_size;
+        ASN__ENCODED_OK(erval);
+    }
+
+    ASN_DEBUG("Encoding members of %s SET OF", td->name);
+
+    /*
+     * DER mandates dynamic sorting of the SET OF elements
+     * according to their encodings. Build an array of the
+     * encoded elements.
+     */
+    encoded_els = SET_OF__encode_sorted(elm, list, SOES_DER);
+
+    /*
+     * Report encoded elements to the application.
+     * Dispose of temporary sorted members table.
+     */
+    for(edx = 0; edx < list->count; edx++) {
+        struct _el_buffer *encoded_el = &encoded_els[edx];
+        /* Report encoded chunks to the application */
+        if(cb(encoded_el->buf, encoded_el->length, app_key) < 0) {
+            break;
+        } else {
+            encoding_size += encoded_el->length;
+        }
+    }
+
+    SET_OF__encode_sorted_free(encoded_els, list->count);
+
+    if(edx == list->count) {
+        asn_enc_rval_t erval = {0,0,0};
+        assert(computed_size == (size_t)encoding_size);
+        erval.encoded = computed_size;
+        ASN__ENCODED_OK(erval);
+    } else {
+        ASN__ENCODE_FAILED;
+    }
+}
+
+#undef XER_ADVANCE
+#define        XER_ADVANCE(num_bytes)  do {                    \
+               size_t num = num_bytes;                 \
+               buf_ptr = ((const char *)buf_ptr) + num;\
+               size -= num;                            \
+               consumed_myself += num;                 \
+       } while(0)
+
+/*
+ * Decode the XER (XML) data.
+ */
+asn_dec_rval_t
+SET_OF_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
+                  const asn_TYPE_descriptor_t *td, void **struct_ptr,
+                  const char *opt_mname, const void *buf_ptr, size_t size) {
+    /*
+        * Bring closer parts of structure description.
+        */
+       const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+       const asn_TYPE_member_t *element = td->elements;
+       const char *elm_tag;
+       const char *xml_tag = opt_mname ? opt_mname : td->xml_tag;
+
+       /*
+        * ... and parts of the structure being constructed.
+        */
+       void *st = *struct_ptr; /* Target structure. */
+       asn_struct_ctx_t *ctx;  /* Decoder context */
+
+       asn_dec_rval_t rval = {RC_OK, 0};/* Return value from a decoder */
+       ssize_t consumed_myself = 0;    /* Consumed bytes from ptr */
+
+       /*
+        * Create the target structure if it is not present already.
+        */
+       if(st == 0) {
+               st = *struct_ptr = CALLOC(1, specs->struct_size);
+               if(st == 0) RETURN(RC_FAIL);
+       }
+
+       /* Which tag is expected for the downstream */
+       if(specs->as_XMLValueList) {
+               elm_tag = (specs->as_XMLValueList == 1) ? 0 : "";
+       } else {
+               elm_tag = (*element->name)
+                               ? element->name : element->type->xml_tag;
+       }
+
+       /*
+        * Restore parsing context.
+        */
+       ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset);
+
+       /*
+        * Phases of XER/XML processing:
+        * Phase 0: Check that the opening tag matches our expectations.
+        * Phase 1: Processing body and reacting on closing tag.
+        * Phase 2: Processing inner type.
+        */
+       for(; ctx->phase <= 2;) {
+               pxer_chunk_type_e ch_type;      /* XER chunk type */
+               ssize_t ch_size;                /* Chunk size */
+               xer_check_tag_e tcv;            /* Tag check value */
+
+               /*
+                * Go inside the inner member of a set.
+                */
+               if(ctx->phase == 2) {
+                       asn_dec_rval_t tmprval = {RC_OK, 0};
+
+                       /* Invoke the inner type decoder, m.b. multiple times */
+                       ASN_DEBUG("XER/SET OF element [%s]", elm_tag);
+                       tmprval = element->type->op->xer_decoder(opt_codec_ctx,
+                                       element->type, &ctx->ptr, elm_tag,
+                                       buf_ptr, size);
+                       if(tmprval.code == RC_OK) {
+                               asn_anonymous_set_ *list = _A_SET_FROM_VOID(st);
+                               if(ASN_SET_ADD(list, ctx->ptr) != 0)
+                                       RETURN(RC_FAIL);
+                               ctx->ptr = 0;
+                               XER_ADVANCE(tmprval.consumed);
+                       } else {
+                               XER_ADVANCE(tmprval.consumed);
+                               RETURN(tmprval.code);
+                       }
+                       ctx->phase = 1; /* Back to body processing */
+                       ASN_DEBUG("XER/SET OF phase => %d", ctx->phase);
+                       /* Fall through */
+               }
+
+               /*
+                * Get the next part of the XML stream.
+                */
+               ch_size = xer_next_token(&ctx->context,
+                       buf_ptr, size, &ch_type);
+               if(ch_size == -1) {
+            RETURN(RC_FAIL);
+        } else {
+                       switch(ch_type) {
+            case PXER_WMORE:
+                RETURN(RC_WMORE);
+                       case PXER_COMMENT:      /* Got XML comment */
+                       case PXER_TEXT:         /* Ignore free-standing text */
+                               XER_ADVANCE(ch_size);   /* Skip silently */
+                               continue;
+                       case PXER_TAG:
+                               break;  /* Check the rest down there */
+                       }
+               }
+
+               tcv = xer_check_tag(buf_ptr, ch_size, xml_tag);
+               ASN_DEBUG("XER/SET OF: tcv = %d, ph=%d t=%s",
+                       tcv, ctx->phase, xml_tag);
+               switch(tcv) {
+               case XCT_CLOSING:
+                       if(ctx->phase == 0) break;
+                       ctx->phase = 0;
+                       /* Fall through */
+               case XCT_BOTH:
+                       if(ctx->phase == 0) {
+                               /* No more things to decode */
+                               XER_ADVANCE(ch_size);
+                               ctx->phase = 3; /* Phase out */
+                               RETURN(RC_OK);
+                       }
+                       /* Fall through */
+               case XCT_OPENING:
+                       if(ctx->phase == 0) {
+                               XER_ADVANCE(ch_size);
+                               ctx->phase = 1; /* Processing body phase */
+                               continue;
+                       }
+                       /* Fall through */
+               case XCT_UNKNOWN_OP:
+               case XCT_UNKNOWN_BO:
+
+                       ASN_DEBUG("XER/SET OF: tcv=%d, ph=%d", tcv, ctx->phase);
+                       if(ctx->phase == 1) {
+                               /*
+                                * Process a single possible member.
+                                */
+                               ctx->phase = 2;
+                               continue;
+                       }
+                       /* Fall through */
+               default:
+                       break;
+               }
+
+               ASN_DEBUG("Unexpected XML tag in SET OF");
+               break;
+       }
+
+       ctx->phase = 3; /* "Phase out" on hard failure */
+       RETURN(RC_FAIL);
+}
+
+
+
+typedef struct xer_tmp_enc_s {
+       void *buffer;
+       size_t offset;
+       size_t size;
+} xer_tmp_enc_t;
+static int
+SET_OF_encode_xer_callback(const void *buffer, size_t size, void *key) {
+       xer_tmp_enc_t *t = (xer_tmp_enc_t *)key;
+       if(t->offset + size >= t->size) {
+               size_t newsize = (t->size << 2) + size;
+               void *p = REALLOC(t->buffer, newsize);
+               if(!p) return -1;
+               t->buffer = p;
+               t->size = newsize;
+       }
+       memcpy((char *)t->buffer + t->offset, buffer, size);
+       t->offset += size;
+       return 0;
+}
+static int
+SET_OF_xer_order(const void *aptr, const void *bptr) {
+       const xer_tmp_enc_t *a = (const xer_tmp_enc_t *)aptr;
+       const xer_tmp_enc_t *b = (const xer_tmp_enc_t *)bptr;
+       size_t minlen = a->offset;
+       int ret;
+       if(b->offset < minlen) minlen = b->offset;
+       /* Well-formed UTF-8 has this nice lexicographical property... */
+       ret = memcmp(a->buffer, b->buffer, minlen);
+       if(ret != 0) return ret;
+       if(a->offset == b->offset)
+               return 0;
+       if(a->offset == minlen)
+               return -1;
+       return 1;
+}
+
+
+asn_enc_rval_t
+SET_OF_encode_xer(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+                  enum xer_encoder_flags_e flags, asn_app_consume_bytes_f *cb,
+                  void *app_key) {
+    asn_enc_rval_t er = {0,0,0};
+       const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+       const asn_TYPE_member_t *elm = td->elements;
+    const asn_anonymous_set_ *list = _A_CSET_FROM_VOID(sptr);
+    const char *mname = specs->as_XMLValueList
+               ? 0 : ((*elm->name) ? elm->name : elm->type->xml_tag);
+       size_t mlen = mname ? strlen(mname) : 0;
+       int xcan = (flags & XER_F_CANONICAL);
+       xer_tmp_enc_t *encs = 0;
+       size_t encs_count = 0;
+       void *original_app_key = app_key;
+       asn_app_consume_bytes_f *original_cb = cb;
+       int i;
+
+       if(!sptr) ASN__ENCODE_FAILED;
+
+       if(xcan) {
+               encs = (xer_tmp_enc_t *)MALLOC(list->count * sizeof(encs[0]));
+               if(!encs) ASN__ENCODE_FAILED;
+               cb = SET_OF_encode_xer_callback;
+       }
+
+       er.encoded = 0;
+
+       for(i = 0; i < list->count; i++) {
+               asn_enc_rval_t tmper = {0,0,0};
+
+               void *memb_ptr = list->array[i];
+               if(!memb_ptr) continue;
+
+               if(encs) {
+                       memset(&encs[encs_count], 0, sizeof(encs[0]));
+                       app_key = &encs[encs_count];
+                       encs_count++;
+               }
+
+               if(mname) {
+                       if(!xcan) ASN__TEXT_INDENT(1, ilevel);
+                       ASN__CALLBACK3("<", 1, mname, mlen, ">", 1);
+               }
+
+               if(!xcan && specs->as_XMLValueList == 1)
+                       ASN__TEXT_INDENT(1, ilevel + 1);
+               tmper = elm->type->op->xer_encoder(elm->type, memb_ptr,
+                               ilevel + (specs->as_XMLValueList != 2),
+                               flags, cb, app_key);
+               if(tmper.encoded == -1) return tmper;
+               er.encoded += tmper.encoded;
+               if(tmper.encoded == 0 && specs->as_XMLValueList) {
+                       const char *name = elm->type->xml_tag;
+                       size_t len = strlen(name);
+                       ASN__CALLBACK3("<", 1, name, len, "/>", 2);
+               }
+
+               if(mname) {
+                       ASN__CALLBACK3("</", 2, mname, mlen, ">", 1);
+               }
+
+       }
+
+       if(!xcan) ASN__TEXT_INDENT(1, ilevel - 1);
+
+       if(encs) {
+               xer_tmp_enc_t *enc = encs;
+               xer_tmp_enc_t *end = encs + encs_count;
+               ssize_t control_size = 0;
+
+               er.encoded = 0;
+               cb = original_cb;
+               app_key = original_app_key;
+               qsort(encs, encs_count, sizeof(encs[0]), SET_OF_xer_order);
+
+               for(; enc < end; enc++) {
+                       ASN__CALLBACK(enc->buffer, enc->offset);
+                       FREEMEM(enc->buffer);
+                       enc->buffer = 0;
+                       control_size += enc->offset;
+               }
+               assert(control_size == er.encoded);
+       }
+
+       goto cleanup;
+cb_failed:
+       ASN__ENCODE_FAILED;
+cleanup:
+       if(encs) {
+               size_t n;
+               for(n = 0; n < encs_count; n++) {
+                       FREEMEM(encs[n].buffer);
+               }
+               FREEMEM(encs);
+       }
+       ASN__ENCODED_OK(er);
+}
+
+int
+SET_OF_print(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+             asn_app_consume_bytes_f *cb, void *app_key) {
+    asn_TYPE_member_t *elm = td->elements;
+       const asn_anonymous_set_ *list = _A_CSET_FROM_VOID(sptr);
+       int ret;
+       int i;
+
+       if(!sptr) return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+
+       /* Dump preamble */
+       if(cb(td->name, strlen(td->name), app_key) < 0
+       || cb(" ::= {", 6, app_key) < 0)
+               return -1;
+
+       for(i = 0; i < list->count; i++) {
+               const void *memb_ptr = list->array[i];
+               if(!memb_ptr) continue;
+
+               _i_INDENT(1);
+
+               ret = elm->type->op->print_struct(elm->type, memb_ptr,
+                       ilevel + 1, cb, app_key);
+               if(ret) return ret;
+       }
+
+       ilevel--;
+       _i_INDENT(1);
+
+       return (cb("}", 1, app_key) < 0) ? -1 : 0;
+}
+
+void
+SET_OF_free(const asn_TYPE_descriptor_t *td, void *ptr,
+            enum asn_struct_free_method method) {
+    if(td && ptr) {
+               const asn_SET_OF_specifics_t *specs;
+               asn_TYPE_member_t *elm = td->elements;
+               asn_anonymous_set_ *list = _A_SET_FROM_VOID(ptr);
+               asn_struct_ctx_t *ctx;  /* Decoder context */
+               int i;
+
+               /*
+                * Could not use set_of_empty() because of (*free)
+                * incompatibility.
+                */
+               for(i = 0; i < list->count; i++) {
+                       void *memb_ptr = list->array[i];
+                       if(memb_ptr)
+                       ASN_STRUCT_FREE(*elm->type, memb_ptr);
+               }
+               list->count = 0;        /* No meaningful elements left */
+
+               asn_set_empty(list);    /* Remove (list->array) */
+
+               specs = (const asn_SET_OF_specifics_t *)td->specifics;
+               ctx = (asn_struct_ctx_t *)((char *)ptr + specs->ctx_offset);
+               if(ctx->ptr) {
+                       ASN_STRUCT_FREE(*elm->type, ctx->ptr);
+                       ctx->ptr = 0;
+               }
+
+        switch(method) {
+        case ASFM_FREE_EVERYTHING:
+            FREEMEM(ptr);
+            break;
+        case ASFM_FREE_UNDERLYING:
+            break;
+        case ASFM_FREE_UNDERLYING_AND_RESET:
+            memset(ptr, 0, specs->struct_size);
+            break;
+        }
+    }
+}
+
+int
+SET_OF_constraint(const asn_TYPE_descriptor_t *td, const void *sptr,
+                  asn_app_constraint_failed_f *ctfailcb, void *app_key) {
+    const asn_TYPE_member_t *elm = td->elements;
+       asn_constr_check_f *constr;
+       const asn_anonymous_set_ *list = _A_CSET_FROM_VOID(sptr);
+       int i;
+
+       if(!sptr) {
+               ASN__CTFAIL(app_key, td, sptr,
+                       "%s: value not given (%s:%d)",
+                       td->name, __FILE__, __LINE__);
+               return -1;
+       }
+
+       constr = elm->encoding_constraints.general_constraints;
+       if(!constr) constr = elm->type->encoding_constraints.general_constraints;
+
+       /*
+        * Iterate over the members of an array.
+        * Validate each in turn, until one fails.
+        */
+       for(i = 0; i < list->count; i++) {
+               const void *memb_ptr = list->array[i];
+               int ret;
+
+               if(!memb_ptr) continue;
+
+               ret = constr(elm->type, memb_ptr, ctfailcb, app_key);
+               if(ret) return ret;
+       }
+
+       return 0;
+}
+
+#ifndef ASN_DISABLE_PER_SUPPORT
+
+asn_dec_rval_t
+SET_OF_decode_uper(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) {
+    asn_dec_rval_t rv = {RC_OK, 0};
+       const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+    const asn_TYPE_member_t *elm = td->elements; /* Single one */
+    void *st = *sptr;
+       asn_anonymous_set_ *list;
+       const 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->encoding_constraints.per_constraints)
+               ct = &td->encoding_constraints.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);
+               ASN_DEBUG("Preparing to fetch %ld+%ld 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 = uper_get_length(pd, -1, 0, &repeat);
+            ASN_DEBUG("Got to decode %" ASN_PRI_SSIZE " elements (eff %d)",
+                      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->op->uper_decoder(opt_codec_ctx, elm->type,
+                               elm->encoding_constraints.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) {
+                    if(rv.consumed == 0 && nelems > 200) {
+                        /* Protect from SET OF NULL compression bombs. */
+                        ASN__DECODE_FAILED;
+                    }
+                                       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;
+}
+
+asn_enc_rval_t
+SET_OF_encode_uper(const asn_TYPE_descriptor_t *td,
+                   const asn_per_constraints_t *constraints, const void *sptr,
+                   asn_per_outp_t *po) {
+    const asn_anonymous_set_ *list;
+    const asn_per_constraint_t *ct;
+    const asn_TYPE_member_t *elm = td->elements;
+    struct _el_buffer *encoded_els;
+    asn_enc_rval_t er = {0,0,0};
+    size_t encoded_edx;
+
+    if(!sptr) ASN__ENCODE_FAILED;
+
+    list = _A_CSET_FROM_VOID(sptr);
+
+    er.encoded = 0;
+
+    ASN_DEBUG("Encoding %s as SEQUENCE OF (%d)", td->name, list->count);
+
+    if(constraints) ct = &constraints->size;
+    else if(td->encoding_constraints.per_constraints)
+        ct = &td->encoding_constraints.per_constraints->size;
+    else ct = 0;
+
+    /* If extensible constraint, check if size is in root */
+    if(ct) {
+        int not_in_root =
+            (list->count < ct->lower_bound || list->count > ct->upper_bound);
+        ASN_DEBUG("lb %ld ub %ld %s", ct->lower_bound, ct->upper_bound,
+                  ct->flags & APC_EXTENSIBLE ? "ext" : "fix");
+        if(ct->flags & APC_EXTENSIBLE) {
+            /* Declare whether size is in extension root */
+            if(per_put_few_bits(po, not_in_root, 1)) ASN__ENCODE_FAILED;
+            if(not_in_root) ct = 0;
+        } else if(not_in_root && ct->effective_bits >= 0) {
+            ASN__ENCODE_FAILED;
+        }
+
+    }
+
+    if(ct && ct->effective_bits >= 0) {
+        /* X.691, #19.5: No length determinant */
+        if(per_put_few_bits(po, list->count - ct->lower_bound,
+                            ct->effective_bits))
+            ASN__ENCODE_FAILED;
+    } else if(list->count == 0) {
+        /* When the list is empty add only the length determinant
+         * X.691, #20.6 and #11.9.4.1
+         */
+        if (uper_put_length(po, 0, 0)) {
+            ASN__ENCODE_FAILED;
+        }
+        ASN__ENCODED_OK(er);
+    }
+
+
+    /*
+     * Canonical UPER #22.1 mandates dynamic sorting of the SET OF elements
+     * according to their encodings. Build an array of the encoded elements.
+     */
+    encoded_els = SET_OF__encode_sorted(elm, list, SOES_CUPER);
+
+    for(encoded_edx = 0; (ssize_t)encoded_edx < list->count;) {
+        ssize_t may_encode;
+        size_t edx;
+        int need_eom = 0;
+
+        if(ct && ct->effective_bits >= 0) {
+            may_encode = list->count;
+        } else {
+            may_encode =
+                uper_put_length(po, list->count - encoded_edx, &need_eom);
+            if(may_encode < 0) ASN__ENCODE_FAILED;
+        }
+
+        for(edx = encoded_edx; edx < encoded_edx + may_encode; edx++) {
+            const struct _el_buffer *el = &encoded_els[edx];
+            if(asn_put_many_bits(po, el->buf,
+                                 (8 * el->length) - el->bits_unused) < 0) {
+                break;
+            }
+        }
+
+        if(need_eom && uper_put_length(po, 0, 0))
+            ASN__ENCODE_FAILED; /* End of Message length */
+
+        encoded_edx += may_encode;
+    }
+
+    SET_OF__encode_sorted_free(encoded_els, list->count);
+
+    if((ssize_t)encoded_edx == list->count) {
+        ASN__ENCODED_OK(er);
+    } else {
+        ASN__ENCODE_FAILED;
+    }
+}
+
+asn_dec_rval_t
+SET_OF_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) {
+       asn_dec_rval_t rv = {RC_OK, 0};
+       const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+       const asn_TYPE_member_t *elm = td->elements; /* Single one */
+       void *st = *sptr;
+       asn_anonymous_set_ *list;
+       const 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->encoding_constraints.per_constraints)
+               ct = &td->encoding_constraints.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 = aper_get_nsnnwn(pd, ct->upper_bound - ct->lower_bound + 1);
+               ASN_DEBUG("Preparing to fetch %ld+%ld 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->op->aper_decoder(opt_codec_ctx, elm->type,
+                                                        elm->encoding_constraints.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;
+}
+
+#endif  /* ASN_DISABLE_PER_SUPPORT */
+
+struct comparable_ptr {
+    const asn_TYPE_descriptor_t *td;
+    const void *sptr;
+};
+
+static int
+SET_OF__compare_cb(const void *aptr, const void *bptr) {
+    const struct comparable_ptr *a = aptr;
+    const struct comparable_ptr *b = bptr;
+    assert(a->td == b->td);
+    return a->td->op->compare_struct(a->td, a->sptr, b->sptr);
+}
+
+int
+SET_OF_compare(const asn_TYPE_descriptor_t *td, const void *aptr,
+               const void *bptr) {
+    const asn_anonymous_set_ *a = _A_CSET_FROM_VOID(aptr);
+    const asn_anonymous_set_ *b = _A_CSET_FROM_VOID(bptr);
+
+    if(a && b) {
+        struct comparable_ptr *asorted;
+        struct comparable_ptr *bsorted;
+        ssize_t common_length;
+        ssize_t idx;
+
+        if(a->count == 0) {
+            if(b->count) return -1;
+            return 0;
+        } else if(b->count == 0) {
+            return 1;
+        }
+
+        asorted = MALLOC(a->count * sizeof(asorted[0]));
+        bsorted = MALLOC(b->count * sizeof(bsorted[0]));
+        if(!asorted || !bsorted) {
+            FREEMEM(asorted);
+            FREEMEM(bsorted);
+            return -1;
+        }
+
+        for(idx = 0; idx < a->count; idx++) {
+            asorted[idx].td = td->elements->type;
+            asorted[idx].sptr = a->array[idx];
+        }
+
+        for(idx = 0; idx < b->count; idx++) {
+            bsorted[idx].td = td->elements->type;
+            bsorted[idx].sptr = b->array[idx];
+        }
+
+        qsort(asorted, a->count, sizeof(asorted[0]), SET_OF__compare_cb);
+        qsort(bsorted, b->count, sizeof(bsorted[0]), SET_OF__compare_cb);
+
+        common_length = (a->count < b->count ? a->count : b->count);
+        for(idx = 0; idx < common_length; idx++) {
+            int ret = td->elements->type->op->compare_struct(
+                td->elements->type, asorted[idx].sptr, bsorted[idx].sptr);
+            if(ret) {
+                FREEMEM(asorted);
+                FREEMEM(bsorted);
+                return ret;
+            }
+        }
+
+        FREEMEM(asorted);
+        FREEMEM(bsorted);
+
+        if(idx < b->count) /* more elements in b */
+            return -1;     /* a is shorter, so put it first */
+        if(idx < a->count) return 1;
+    } else if(!a) {
+        return -1;
+    } else if(!b) {
+        return 1;
+    }
+
+       return 0;
+}
+
+
+asn_TYPE_operation_t asn_OP_SET_OF = {
+       SET_OF_free,
+       SET_OF_print,
+       SET_OF_compare,
+       SET_OF_decode_ber,
+       SET_OF_encode_der,
+       SET_OF_decode_xer,
+       SET_OF_encode_xer,
+#ifdef ASN_DISABLE_OER_SUPPORT
+       0,
+       0,
+#else
+       SET_OF_decode_oer,
+       SET_OF_encode_oer,
+#endif
+#ifdef ASN_DISABLE_PER_SUPPORT
+       0,
+       0,
+       0,
+       0,
+#else
+       SET_OF_decode_uper,
+       SET_OF_encode_uper,
+       SET_OF_decode_aper,
+       0,      /* SET_OF_encode_aper */
+#endif /* ASN_DISABLE_PER_SUPPORT */
+       SET_OF_random_fill,
+       0       /* Use generic outmost tag fetcher */
+};
+
+
+asn_random_fill_result_t
+SET_OF_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
+                   const asn_encoding_constraints_t *constraints,
+                   size_t max_length) {
+    const asn_SET_OF_specifics_t *specs =
+        (const asn_SET_OF_specifics_t *)td->specifics;
+    asn_random_fill_result_t res_ok = {ARFILL_OK, 0};
+    asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
+    asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
+    const asn_TYPE_member_t *elm = td->elements;
+    void *st = *sptr;
+    long max_elements = 5;
+    long slb = 0;   /* Lower size bound */
+    long sub = 0;   /* Upper size bound */
+    size_t rnd_len;
+
+    if(max_length == 0) return result_skipped;
+
+    if(st == NULL) {
+        st = (*sptr = CALLOC(1, specs->struct_size));
+        if(st == NULL) {
+            return result_failed;
+        }
+    }
+
+    switch(asn_random_between(0, 6)) {
+    case 0: max_elements = 0; break;
+    case 1: max_elements = 1; break;
+    case 2: max_elements = 5; break;
+    case 3: max_elements = max_length; break;
+    case 4: max_elements = max_length / 2; break;
+    case 5: max_elements = max_length / 4; break;
+    default: break;
+    }
+    sub = slb + max_elements;
+
+    if(!constraints || !constraints->per_constraints)
+        constraints = &td->encoding_constraints;
+    if(constraints->per_constraints) {
+        const asn_per_constraint_t *pc = &constraints->per_constraints->size;
+        if(pc->flags & APC_SEMI_CONSTRAINED) {
+            slb = pc->lower_bound;
+            sub = pc->lower_bound + max_elements;
+        } else if(pc->flags & APC_CONSTRAINED) {
+            slb = pc->lower_bound;
+            sub = pc->upper_bound;
+            if(sub - slb > max_elements) sub = slb + max_elements;
+        }
+    }
+
+    /* Bias towards edges of allowed space */
+    switch(asn_random_between(-1, 4)) {
+    default:
+    case -1:
+        /* Prepare lengths somewhat outside of constrained range. */
+        if(constraints->per_constraints
+           && (constraints->per_constraints->size.flags & APC_EXTENSIBLE)) {
+            switch(asn_random_between(0, 5)) {
+            default:
+            case 0:
+                rnd_len = 0;
+                break;
+            case 1:
+                if(slb > 0) {
+                    rnd_len = slb - 1;
+                } else {
+                    rnd_len = 0;
+                }
+                break;
+            case 2:
+                rnd_len = asn_random_between(0, slb);
+                break;
+            case 3:
+                if(sub < (ssize_t)max_length) {
+                    rnd_len = sub + 1;
+                } else {
+                    rnd_len = max_length;
+                }
+                break;
+            case 4:
+                if(sub < (ssize_t)max_length) {
+                    rnd_len = asn_random_between(sub + 1, max_length);
+                } else {
+                    rnd_len = max_length;
+                }
+                break;
+            case 5:
+                rnd_len = max_length;
+                break;
+            }
+            break;
+        }
+        /* Fall through */
+    case 0:
+        rnd_len = asn_random_between(slb, sub);
+        break;
+    case 1:
+        if(slb < sub) {
+            rnd_len = asn_random_between(slb + 1, sub);
+            break;
+        }
+        /* Fall through */
+    case 2:
+        rnd_len = asn_random_between(slb, slb);
+        break;
+    case 3:
+        if(slb < sub) {
+            rnd_len = asn_random_between(slb, sub - 1);
+            break;
+        }
+        /* Fall through */
+    case 4:
+        rnd_len = asn_random_between(sub, sub);
+        break;
+    }
+
+    for(; rnd_len > 0; rnd_len--) {
+        asn_anonymous_set_ *list = _A_SET_FROM_VOID(st);
+        void *ptr = 0;
+        asn_random_fill_result_t tmpres = elm->type->op->random_fill(
+            elm->type, &ptr, &elm->encoding_constraints,
+            (max_length > res_ok.length ? max_length - res_ok.length : 0)
+                / rnd_len);
+        switch(tmpres.code) {
+        case ARFILL_OK:
+            ASN_SET_ADD(list, ptr);
+            res_ok.length += tmpres.length;
+            break;
+        case ARFILL_SKIPPED:
+            break;
+        case ARFILL_FAILED:
+            assert(ptr == 0);
+            return tmpres;
+        }
+    }
+
+    return res_ok;
+}
+