+/*-
+ * Copyright (c) 2003, 2004, 2005 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(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
+ void **struct_ptr, const void *ptr, size_t size, int tag_mode) {
+ /*
+ * Bring closer parts of structure description.
+ */
+ asn_SET_OF_specifics_t *specs = (asn_SET_OF_specifics_t *)td->specifics;
+ 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->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 */
+ 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 size;
+};
+/* 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->size)
+ return -1;
+
+ memcpy(el_buf->buf + el_buf->length, buffer, size);
+
+ el_buf->length += size;
+ return 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;
+ int ret;
+ size_t common_len;
+
+ if(a->length < b->length)
+ common_len = a->length;
+ else
+ common_len = b->length;
+
+ 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;
+ }
+
+ return ret;
+}
+
+/*
+ * The DER encoder of the SET OF type.
+ */
+asn_enc_rval_t
+SET_OF_encode_der(asn_TYPE_descriptor_t *td, void *ptr,
+ int tag_mode, ber_tlv_tag_t tag,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ asn_TYPE_member_t *elm = td->elements;
+ asn_TYPE_descriptor_t *elm_type = elm->type;
+ der_type_encoder_f *der_encoder = elm_type->der_encoder;
+ asn_anonymous_set_ *list = _A_SET_FROM_VOID(ptr);
+ size_t computed_size = 0;
+ ssize_t encoding_size = 0;
+ struct _el_buffer *encoded_els;
+ ssize_t eels_count = 0;
+ size_t max_encoded_len = 1;
+ asn_enc_rval_t erval;
+ int ret;
+ 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];
+ if(!memb_ptr) continue;
+ erval = der_encoder(elm_type, memb_ptr, 0, elm->tag, 0, 0);
+ if(erval.encoded == -1)
+ return erval;
+ computed_size += erval.encoded;
+
+ /* Compute maximum encoding's size */
+ if(max_encoded_len < (size_t)erval.encoded)
+ max_encoded_len = 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 == -1) {
+ erval.encoded = -1;
+ erval.failed_type = td;
+ erval.structure_ptr = ptr;
+ return erval;
+ }
+ computed_size += encoding_size;
+
+ if(!cb || list->count == 0) {
+ erval.encoded = computed_size;
+ _ASN_ENCODED_OK(erval);
+ }
+
+ /*
+ * DER mandates dynamic sorting of the SET OF elements
+ * according to their encodings. Build an array of the
+ * encoded elements.
+ */
+ encoded_els = (struct _el_buffer *)MALLOC(
+ list->count * sizeof(encoded_els[0]));
+ if(encoded_els == NULL) {
+ erval.encoded = -1;
+ erval.failed_type = td;
+ erval.structure_ptr = ptr;
+ return erval;
+ }
+
+ ASN_DEBUG("Encoding members of %s SET OF", td->name);
+
+ /*
+ * Encode all members.
+ */
+ for(edx = 0; edx < list->count; edx++) {
+ void *memb_ptr = list->array[edx];
+ struct _el_buffer *encoded_el = &encoded_els[eels_count];
+
+ if(!memb_ptr) continue;
+
+ /*
+ * Prepare space for encoding.
+ */
+ encoded_el->buf = (uint8_t *)MALLOC(max_encoded_len);
+ if(encoded_el->buf) {
+ encoded_el->length = 0;
+ encoded_el->size = max_encoded_len;
+ } else {
+ for(edx--; edx >= 0; edx--)
+ FREEMEM(encoded_els[edx].buf);
+ FREEMEM(encoded_els);
+ erval.encoded = -1;
+ erval.failed_type = td;
+ erval.structure_ptr = ptr;
+ return erval;
+ }
+
+ /*
+ * Encode the member into the prepared space.
+ */
+ erval = der_encoder(elm_type, memb_ptr, 0, elm->tag,
+ _el_addbytes, encoded_el);
+ if(erval.encoded == -1) {
+ for(; edx >= 0; edx--)
+ FREEMEM(encoded_els[edx].buf);
+ FREEMEM(encoded_els);
+ return erval;
+ }
+ encoding_size += erval.encoded;
+ eels_count++;
+ }
+
+ /*
+ * Sort the encoded elements according to their encoding.
+ */
+ qsort(encoded_els, eels_count, sizeof(encoded_els[0]), _el_buf_cmp);
+
+ /*
+ * Report encoded elements to the application.
+ * Dispose of temporary sorted members table.
+ */
+ ret = 0;
+ for(edx = 0; edx < eels_count; edx++) {
+ struct _el_buffer *encoded_el = &encoded_els[edx];
+ /* Report encoded chunks to the application */
+ if(ret == 0
+ && cb(encoded_el->buf, encoded_el->length, app_key) < 0)
+ ret = -1;
+ FREEMEM(encoded_el->buf);
+ }
+ FREEMEM(encoded_els);
+
+ if(ret || computed_size != (size_t)encoding_size) {
+ /*
+ * Standard callback failed, or
+ * encoded size is not equal to the computed size.
+ */
+ erval.encoded = -1;
+ erval.failed_type = td;
+ erval.structure_ptr = ptr;
+ } else {
+ erval.encoded = computed_size;
+ }
+
+ _ASN_ENCODED_OK(erval);
+}
+
+#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(asn_codec_ctx_t *opt_codec_ctx, 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.
+ */
+ asn_SET_OF_specifics_t *specs = (asn_SET_OF_specifics_t *)td->specifics;
+ 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; /* 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;
+
+ /* Invoke the inner type decoder, m.b. multiple times */
+ ASN_DEBUG("XER/SET OF element [%s]", elm_tag);
+ tmprval = element->type->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);
+ switch(ch_size) {
+ case -1: RETURN(RC_FAIL);
+ case 0: RETURN(RC_WMORE);
+ default:
+ switch(ch_type) {
+ 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(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_enc_rval_t er;
+ asn_SET_OF_specifics_t *specs = (asn_SET_OF_specifics_t *)td->specifics;
+ asn_TYPE_member_t *elm = td->elements;
+ asn_anonymous_set_ *list = _A_SET_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;
+
+ 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) _i_ASN_TEXT_INDENT(1, ilevel);
+ _ASN_CALLBACK3("<", 1, mname, mlen, ">", 1);
+ }
+
+ if(!xcan && specs->as_XMLValueList == 1)
+ _i_ASN_TEXT_INDENT(1, ilevel + 1);
+ tmper = elm->type->xer_encoder(elm->type, memb_ptr,
+ ilevel + (specs->as_XMLValueList != 2),
+ flags, cb, app_key);
+ if(tmper.encoded == -1) {
+ td = tmper.failed_type;
+ sptr = tmper.structure_ptr;
+ goto cb_failed;
+ }
+ 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);
+ er.encoded += 5;
+ }
+
+ er.encoded += (2 * mlen) + tmper.encoded;
+ }
+
+ if(!xcan) _i_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;
+
+ 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:
+ er.encoded = -1;
+ er.failed_type = td;
+ er.structure_ptr = sptr;
+cleanup:
+ if(encs) {
+ while(encs_count-- > 0) {
+ if(encs[encs_count].buffer)
+ FREEMEM(encs[encs_count].buffer);
+ }
+ FREEMEM(encs);
+ }
+ _ASN_ENCODED_OK(er);
+}
+
+int
+SET_OF_print(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->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(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) {
+ if(td && ptr) {
+ asn_TYPE_member_t *elm = td->elements;
+ asn_anonymous_set_ *list = _A_SET_FROM_VOID(ptr);
+ 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) */
+
+ if(!contents_only) {
+ FREEMEM(ptr);
+ }
+ }
+}
+
+int
+SET_OF_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
+ asn_app_constraint_failed_f *ctfailcb, void *app_key) {
+ 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,
+ "%s: value not given (%s:%d)",
+ td->name, __FILE__, __LINE__);
+ return -1;
+ }
+
+ constr = elm->memb_constraints;
+ if(!constr) constr = elm->type->check_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;
+ }
+
+ /*
+ * Cannot inherit it eralier:
+ * need to make sure we get the updated version.
+ */
+ if(!elm->memb_constraints)
+ elm->memb_constraints = elm->type->check_constraints;
+
+ return 0;
+}
+
+asn_dec_rval_t
+SET_OF_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_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);
+ 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,
+ 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->uper_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;
+}
+
git.stg.codes / stg.git / blobdiff