X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/aa24fde9f922b0dd8c37ed16ac84aa77157c50ae..52b4afb2c72468a55fb49aeed3f7dda1277319df:/projects/stargazer/plugins/other/snmp/asn1/constr_SEQUENCE.c diff --git a/projects/stargazer/plugins/other/snmp/asn1/constr_SEQUENCE.c b/projects/stargazer/plugins/other/snmp/asn1/constr_SEQUENCE.c deleted file mode 100644 index b7694343..00000000 --- a/projects/stargazer/plugins/other/snmp/asn1/constr_SEQUENCE.c +++ /dev/null @@ -1,1251 +0,0 @@ -/*- - * Copyright (c) 2003, 2004, 2005, 2006 Lev Walkin . - * All rights reserved. - * Redistribution and modifications are permitted subject to BSD license. - */ -#include -#include - -/* - * 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 's L, even if the buffer size allows - * reading more data. - * For example, consider the buffer containing the following TLVs: - * ... - * 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) - -/* - * Check whether we are inside the extensions group. - */ -#define IN_EXTENSION_GROUP(specs, memb_idx) \ - ( ((memb_idx) > (specs)->ext_after) \ - &&((memb_idx) < (specs)->ext_before)) - - -/* - * Tags are canonically sorted in the tag2element map. - */ -static int -_t2e_cmp(const void *ap, const void *bp) { - const asn_TYPE_tag2member_t *a = (const asn_TYPE_tag2member_t *)ap; - const asn_TYPE_tag2member_t *b = (const asn_TYPE_tag2member_t *)bp; - - int a_class = BER_TAG_CLASS(a->el_tag); - int b_class = BER_TAG_CLASS(b->el_tag); - - if(a_class == b_class) { - ber_tlv_tag_t a_value = BER_TAG_VALUE(a->el_tag); - ber_tlv_tag_t b_value = BER_TAG_VALUE(b->el_tag); - - if(a_value == b_value) { - if(a->el_no > b->el_no) - return 1; - /* - * Important: we do not check - * for a->el_no <= b->el_no! - */ - return 0; - } else if(a_value < b_value) - return -1; - else - return 1; - } else if(a_class < b_class) { - return -1; - } else { - return 1; - } -} - - -/* - * The decoder of the SEQUENCE type. - */ -asn_dec_rval_t -SEQUENCE_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_SEQUENCE_specifics_t *specs = (asn_SEQUENCE_specifics_t *)td->specifics; - asn_TYPE_member_t *elements = td->elements; - - /* - * 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 */ - int edx; /* SEQUENCE element's index */ - - ASN_DEBUG("Decoding %s as SEQUENCE", 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); - - NEXT_PHASE(ctx); - - ASN_DEBUG("Structure consumes %ld bytes, buffer %ld", - (long)ctx->left, (long)size); - - /* Fall through */ - case 1: - /* - * PHASE 1. - * From the place where we've left it previously, - * try to decode the next member from the list of - * this structure's elements. - * (ctx->step) stores the member being processed - * between invocations and the microphase {0,1} of parsing - * that member: - * step = ( * 2 + ). - */ - for(edx = (ctx->step >> 1); edx < td->elements_count; - edx++, ctx->step = (ctx->step & ~1) + 2) { - void *memb_ptr; /* Pointer to the member */ - void **memb_ptr2; /* Pointer to that pointer */ - ssize_t tag_len; /* Length of TLV's T */ - int opt_edx_end; /* Next non-optional element */ - int use_bsearch; - int n; - - if(ctx->step & 1) - goto microphase2; - - /* - * MICROPHASE 1: Synchronize decoding. - */ - ASN_DEBUG("In %s SEQUENCE left %d, edx=%d flags=%d" - " opt=%d ec=%d", - td->name, (int)ctx->left, edx, - elements[edx].flags, elements[edx].optional, - td->elements_count); - - if(ctx->left == 0 /* No more stuff is expected */ - && ( - /* Explicit OPTIONAL specification reaches the end */ - (edx + elements[edx].optional - == td->elements_count) - || - /* All extensions are optional */ - (IN_EXTENSION_GROUP(specs, edx) - && specs->ext_before > td->elements_count) - ) - ) { - ASN_DEBUG("End of SEQUENCE %s", td->name); - /* - * Found the legitimate end of the structure. - */ - PHASE_OUT(ctx); - RETURN(RC_OK); - } - - /* - * Fetch the T from TLV. - */ - tag_len = ber_fetch_tag(ptr, LEFT, &tlv_tag); - ASN_DEBUG("Current tag in %s SEQUENCE for element %d " - "(%s) is %s encoded in %d bytes, of frame %ld", - td->name, edx, elements[edx].name, - ber_tlv_tag_string(tlv_tag), (int)tag_len, (long)LEFT); - 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) { - ASN_DEBUG("edx = %d, opt = %d, ec=%d", - edx, elements[edx].optional, - td->elements_count); - if((edx + elements[edx].optional - == td->elements_count) - || (IN_EXTENSION_GROUP(specs, edx) - && specs->ext_before - > td->elements_count)) { - /* - * Yeah, baby! Found the terminator - * of the indefinite length structure. - */ - /* - * Proceed to the canonical - * finalization function. - * No advancing is necessary. - */ - goto phase3; - } - } - } - - /* - * Find the next available type with this tag. - */ - use_bsearch = 0; - opt_edx_end = edx + elements[edx].optional + 1; - if(opt_edx_end > td->elements_count) - opt_edx_end = td->elements_count; /* Cap */ - else if(opt_edx_end - edx > 8) { - /* Limit the scope of linear search... */ - opt_edx_end = edx + 8; - use_bsearch = 1; - /* ... and resort to bsearch() */ - } - for(n = edx; n < opt_edx_end; n++) { - if(BER_TAGS_EQUAL(tlv_tag, elements[n].tag)) { - /* - * Found element corresponding to the tag - * being looked at. - * Reposition over the right element. - */ - edx = n; - ctx->step = 1 + 2 * edx; /* Remember! */ - goto microphase2; - } else if(elements[n].flags & ATF_OPEN_TYPE) { - /* - * This is the ANY type, which may bear - * any flag whatsoever. - */ - edx = n; - ctx->step = 1 + 2 * edx; /* Remember! */ - goto microphase2; - } else if(elements[n].tag == (ber_tlv_tag_t)-1) { - use_bsearch = 1; - break; - } - } - if(use_bsearch) { - /* - * Resort to a binary search over - * sorted array of tags. - */ - asn_TYPE_tag2member_t *t2m; - asn_TYPE_tag2member_t key; - key.el_tag = tlv_tag; - key.el_no = edx; - t2m = (asn_TYPE_tag2member_t *)bsearch(&key, - specs->tag2el, specs->tag2el_count, - sizeof(specs->tag2el[0]), _t2e_cmp); - if(t2m) { - asn_TYPE_tag2member_t *best = 0; - asn_TYPE_tag2member_t *t2m_f, *t2m_l; - int edx_max = edx + elements[edx].optional; - /* - * Rewind to the first element with that tag, - * `cause bsearch() does not guarantee order. - */ - t2m_f = t2m + t2m->toff_first; - t2m_l = t2m + t2m->toff_last; - for(t2m = t2m_f; t2m <= t2m_l; t2m++) { - if(t2m->el_no > edx_max) break; - if(t2m->el_no < edx) continue; - best = t2m; - } - if(best) { - edx = best->el_no; - ctx->step = 1 + 2 * edx; - goto microphase2; - } - } - n = opt_edx_end; - } - if(n == opt_edx_end) { - /* - * If tag is unknown, it may be either - * an unknown (thus, incorrect) tag, - * or an extension (...), - * or an end of the indefinite-length structure. - */ - if(!IN_EXTENSION_GROUP(specs, edx)) { - ASN_DEBUG("Unexpected tag %s (at %d)", - ber_tlv_tag_string(tlv_tag), edx); - ASN_DEBUG("Expected tag %s (%s)%s", - ber_tlv_tag_string(elements[edx].tag), - elements[edx].name, - elements[edx].optional - ?" or alternatives":""); - RETURN(RC_FAIL); - } else { - /* Skip this tag */ - ssize_t skip; - - skip = ber_skip_length(opt_codec_ctx, - BER_TLV_CONSTRUCTED(ptr), - (const char *)ptr + tag_len, - LEFT - tag_len); - ASN_DEBUG("Skip length %d in %s", - (int)skip, td->name); - switch(skip) { - case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); - /* Fall through */ - case -1: RETURN(RC_FAIL); - } - - ADVANCE(skip + tag_len); - ctx->step -= 2; - edx--; - continue; /* Try again with the next tag */ - } - } - - /* - * MICROPHASE 2: Invoke the member-specific decoder. - */ - ctx->step |= 1; /* Confirm entering next microphase */ - microphase2: - ASN_DEBUG("Inside SEQUENCE %s MF2", td->name); - - /* - * Compute the position of the member inside a structure, - * and also a type of containment (it may be contained - * as pointer or using inline inclusion). - */ - if(elements[edx].flags & ATF_POINTER) { - /* Member is a pointer to another structure */ - memb_ptr2 = (void **)((char *)st + elements[edx].memb_offset); - } else { - /* - * A pointer to a pointer - * holding the start of the structure - */ - memb_ptr = (char *)st + elements[edx].memb_offset; - memb_ptr2 = &memb_ptr; - } - /* - * Invoke the member fetch routine according to member's type - */ - rval = elements[edx].type->ber_decoder(opt_codec_ctx, - elements[edx].type, - memb_ptr2, ptr, LEFT, - elements[edx].tag_mode); - ASN_DEBUG("In %s SEQUENCE decoded %d %s of %d " - "in %d bytes rval.code %d, size=%d", - td->name, edx, elements[edx].type->name, - (int)LEFT, (int)rval.consumed, rval.code, (int)size); - switch(rval.code) { - case RC_OK: - break; - case RC_WMORE: /* More data expected */ - if(!SIZE_VIOLATION) { - ADVANCE(rval.consumed); - RETURN(RC_WMORE); - } - ASN_DEBUG("Size violation (c->l=%ld <= s=%ld)", - (long)ctx->left, (long)size); - /* Fall through */ - case RC_FAIL: /* Fatal error */ - RETURN(RC_FAIL); - } /* switch(rval) */ - - ADVANCE(rval.consumed); - } /* for(all structure members) */ - - phase3: - ctx->phase = 3; - case 3: /* 00 and other tags expected */ - case 4: /* only 00's expected */ - - ASN_DEBUG("SEQUENCE %s Leftover: %ld, size = %ld", - td->name, (long)ctx->left, (long)size); - - /* - * Skip everything until the end of the SEQUENCE. - */ - while(ctx->left) { - ssize_t tl, ll; - - tl = ber_fetch_tag(ptr, LEFT, &tlv_tag); - switch(tl) { - case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); - /* Fall through */ - case -1: RETURN(RC_FAIL); - } - - /* - * If expected <0><0>... - */ - 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) { - /* - * Correctly finished with <0><0>. - */ - ADVANCE(2); - ctx->left++; - ctx->phase = 4; - continue; - } - } - - if(!IN_EXTENSION_GROUP(specs, td->elements_count) - || ctx->phase == 4) { - ASN_DEBUG("Unexpected continuation " - "of a non-extensible type " - "%s (SEQUENCE): %s", - td->name, - ber_tlv_tag_string(tlv_tag)); - RETURN(RC_FAIL); - } - - ll = ber_skip_length(opt_codec_ctx, - BER_TLV_CONSTRUCTED(ptr), - (const char *)ptr + tl, LEFT - tl); - switch(ll) { - case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); - /* Fall through */ - case -1: RETURN(RC_FAIL); - } - - ADVANCE(tl + ll); - } - - PHASE_OUT(ctx); - } - - RETURN(RC_OK); -} - - -/* - * The DER encoder of the SEQUENCE type. - */ -asn_enc_rval_t -SEQUENCE_encode_der(asn_TYPE_descriptor_t *td, - void *sptr, int tag_mode, ber_tlv_tag_t tag, - asn_app_consume_bytes_f *cb, void *app_key) { - size_t computed_size = 0; - asn_enc_rval_t erval; - ssize_t ret; - int edx; - - ASN_DEBUG("%s %s as SEQUENCE", - cb?"Encoding":"Estimating", td->name); - - /* - * Gather the length of the underlying members sequence. - */ - for(edx = 0; edx < td->elements_count; edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - void *memb_ptr; - if(elm->flags & ATF_POINTER) { - memb_ptr = *(void **)((char *)sptr + elm->memb_offset); - if(!memb_ptr) { - if(elm->optional) continue; - /* Mandatory element is missing */ - _ASN_ENCODE_FAILED; - } - } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - } - erval = elm->type->der_encoder(elm->type, memb_ptr, - elm->tag_mode, elm->tag, - 0, 0); - if(erval.encoded == -1) - return erval; - computed_size += erval.encoded; - ASN_DEBUG("Member %d %s estimated %ld bytes", - edx, elm->name, (long)erval.encoded); - } - - /* - * Encode the TLV for the sequence itself. - */ - ret = der_write_tags(td, computed_size, tag_mode, 1, tag, cb, app_key); - ASN_DEBUG("Wrote tags: %ld (+%ld)", (long)ret, (long)computed_size); - if(ret == -1) - _ASN_ENCODE_FAILED; - erval.encoded = computed_size + ret; - - if(!cb) _ASN_ENCODED_OK(erval); - - /* - * Encode all members. - */ - for(edx = 0; edx < td->elements_count; edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - asn_enc_rval_t tmperval; - void *memb_ptr; - - if(elm->flags & ATF_POINTER) { - memb_ptr = *(void **)((char *)sptr + elm->memb_offset); - if(!memb_ptr) continue; - } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - } - tmperval = elm->type->der_encoder(elm->type, memb_ptr, - elm->tag_mode, elm->tag, - cb, app_key); - if(tmperval.encoded == -1) - return tmperval; - computed_size -= tmperval.encoded; - ASN_DEBUG("Member %d %s of SEQUENCE %s encoded in %ld bytes", - edx, elm->name, td->name, (long)tmperval.encoded); - } - - if(computed_size != 0) - /* - * Encoded size is not equal to the computed size. - */ - _ASN_ENCODE_FAILED; - - _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 -SEQUENCE_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_SEQUENCE_specifics_t *specs - = (asn_SEQUENCE_specifics_t *)td->specifics; - asn_TYPE_member_t *elements = td->elements; - 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 */ - int edx; /* Element index */ - int edx_end; - - /* - * 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); - - - /* - * 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. - * Phase 3: Skipping unknown extensions. - * Phase 4: PHASED OUT - */ - for(edx = ctx->step; ctx->phase <= 3;) { - pxer_chunk_type_e ch_type; /* XER chunk type */ - ssize_t ch_size; /* Chunk size */ - xer_check_tag_e tcv; /* Tag check value */ - asn_TYPE_member_t *elm; - int n; - - /* - * Go inside the inner member of a sequence. - */ - if(ctx->phase == 2) { - asn_dec_rval_t tmprval; - void *memb_ptr; /* Pointer to the member */ - void **memb_ptr2; /* Pointer to that pointer */ - - elm = &td->elements[edx]; - - if(elm->flags & ATF_POINTER) { - /* Member is a pointer to another structure */ - memb_ptr2 = (void **)((char *)st - + elm->memb_offset); - } else { - memb_ptr = (char *)st + elm->memb_offset; - memb_ptr2 = &memb_ptr; - } - - /* Invoke the inner type decoder, m.b. multiple times */ - tmprval = elm->type->xer_decoder(opt_codec_ctx, - elm->type, memb_ptr2, elm->name, - buf_ptr, size); - XER_ADVANCE(tmprval.consumed); - if(tmprval.code != RC_OK) - RETURN(tmprval.code); - ctx->phase = 1; /* Back to body processing */ - ctx->step = ++edx; - ASN_DEBUG("XER/SEQUENCE phase => %d, step => %d", - ctx->phase, ctx->step); - /* 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/SEQUENCE: tcv = %d, ph=%d [%s]", - tcv, ctx->phase, xml_tag); - - /* Skip the extensions section */ - if(ctx->phase == 3) { - switch(xer_skip_unknown(tcv, &ctx->left)) { - case -1: - ctx->phase = 4; - RETURN(RC_FAIL); - case 0: - XER_ADVANCE(ch_size); - continue; - case 1: - XER_ADVANCE(ch_size); - ctx->phase = 1; - continue; - case 2: - ctx->phase = 1; - break; - } - } - - switch(tcv) { - case XCT_CLOSING: - if(ctx->phase == 0) break; - ctx->phase = 0; - /* Fall through */ - case XCT_BOTH: - if(ctx->phase == 0) { - if(edx >= td->elements_count - || - /* Explicit OPTIONAL specs reaches the end */ - (edx + elements[edx].optional - == td->elements_count) - || - /* All extensions are optional */ - (IN_EXTENSION_GROUP(specs, edx) - && specs->ext_before - > td->elements_count) - ) { - XER_ADVANCE(ch_size); - ctx->phase = 4; /* Phase out */ - RETURN(RC_OK); - } else { - ASN_DEBUG("Premature end of XER SEQUENCE"); - RETURN(RC_FAIL); - } - } - /* 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/SEQUENCE: tcv=%d, ph=%d, edx=%d", - tcv, ctx->phase, edx); - if(ctx->phase != 1) { - break; /* Really unexpected */ - } - - if(edx < td->elements_count) { - /* - * Search which member corresponds to this tag. - */ - edx_end = edx + elements[edx].optional + 1; - if(edx_end > td->elements_count) - edx_end = td->elements_count; - for(n = edx; n < edx_end; n++) { - elm = &td->elements[n]; - tcv = xer_check_tag(buf_ptr, - ch_size, elm->name); - switch(tcv) { - case XCT_BOTH: - case XCT_OPENING: - /* - * Process this member. - */ - ctx->step = edx = n; - ctx->phase = 2; - break; - case XCT_UNKNOWN_OP: - case XCT_UNKNOWN_BO: - continue; - default: - n = edx_end; - break; /* Phase out */ - } - break; - } - if(n != edx_end) - continue; - } else { - ASN_DEBUG("Out of defined members: %d/%d", - edx, td->elements_count); - } - - /* It is expected extension */ - if(IN_EXTENSION_GROUP(specs, - edx + (edx < td->elements_count - ? elements[edx].optional : 0))) { - ASN_DEBUG("Got anticipated extension at %d", - edx); - /* - * Check for (XCT_BOTH or XCT_UNKNOWN_BO) - * By using a mask. Only record a pure - * tags. - */ - if(tcv & XCT_CLOSING) { - /* Found without body */ - } else { - ctx->left = 1; - ctx->phase = 3; /* Skip ...'s */ - } - XER_ADVANCE(ch_size); - continue; - } - - /* Fall through */ - default: - break; - } - - ASN_DEBUG("Unexpected XML tag in SEQUENCE [%c%c%c%c%c%c]", - size>0?((const char *)buf_ptr)[0]:'.', - size>1?((const char *)buf_ptr)[1]:'.', - size>2?((const char *)buf_ptr)[2]:'.', - size>3?((const char *)buf_ptr)[3]:'.', - size>4?((const char *)buf_ptr)[4]:'.', - size>5?((const char *)buf_ptr)[5]:'.'); - break; - } - - ctx->phase = 4; /* "Phase out" on hard failure */ - RETURN(RC_FAIL); -} - -asn_enc_rval_t -SEQUENCE_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; - int xcan = (flags & XER_F_CANONICAL); - int edx; - - if(!sptr) - _ASN_ENCODE_FAILED; - - er.encoded = 0; - - for(edx = 0; edx < td->elements_count; edx++) { - asn_enc_rval_t tmper; - asn_TYPE_member_t *elm = &td->elements[edx]; - void *memb_ptr; - const char *mname = elm->name; - unsigned int mlen = strlen(mname); - - if(elm->flags & ATF_POINTER) { - memb_ptr = *(void **)((char *)sptr + elm->memb_offset); - if(!memb_ptr) { - if(elm->optional) - continue; - /* Mandatory element is missing */ - _ASN_ENCODE_FAILED; - } - } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - } - - if(!xcan) _i_ASN_TEXT_INDENT(1, ilevel); - _ASN_CALLBACK3("<", 1, mname, mlen, ">", 1); - - /* Print the member itself */ - tmper = elm->type->xer_encoder(elm->type, memb_ptr, - ilevel + 1, flags, cb, app_key); - if(tmper.encoded == -1) return tmper; - - _ASN_CALLBACK3("", 1); - er.encoded += 5 + (2 * mlen) + tmper.encoded; - } - - if(!xcan) _i_ASN_TEXT_INDENT(1, ilevel - 1); - - _ASN_ENCODED_OK(er); -cb_failed: - _ASN_ENCODE_FAILED; -} - -int -SEQUENCE_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, - asn_app_consume_bytes_f *cb, void *app_key) { - int edx; - int ret; - - if(!sptr) return (cb("", 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(edx = 0; edx < td->elements_count; edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - const void *memb_ptr; - - if(elm->flags & ATF_POINTER) { - memb_ptr = *(const void * const *)((const char *)sptr + elm->memb_offset); - if(!memb_ptr) { - if(elm->optional) continue; - /* Print line */ - /* Fall through */ - } - } else { - memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); - } - - /* Indentation */ - _i_INDENT(1); - - /* Print the member's name and stuff */ - if(cb(elm->name, strlen(elm->name), app_key) < 0 - || cb(": ", 2, app_key) < 0) - return -1; - - /* Print the member itself */ - 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 -SEQUENCE_free(asn_TYPE_descriptor_t *td, void *sptr, int contents_only) { - int edx; - - if(!td || !sptr) - return; - - ASN_DEBUG("Freeing %s as SEQUENCE", td->name); - - for(edx = 0; edx < td->elements_count; edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - void *memb_ptr; - if(elm->flags & ATF_POINTER) { - memb_ptr = *(void **)((char *)sptr + elm->memb_offset); - if(memb_ptr) - ASN_STRUCT_FREE(*elm->type, memb_ptr); - } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - ASN_STRUCT_FREE_CONTENTS_ONLY(*elm->type, memb_ptr); - } - } - - if(!contents_only) { - FREEMEM(sptr); - } -} - -int -SEQUENCE_constraint(asn_TYPE_descriptor_t *td, const void *sptr, - asn_app_constraint_failed_f *ctfailcb, void *app_key) { - int edx; - - if(!sptr) { - _ASN_CTFAIL(app_key, td, - "%s: value not given (%s:%d)", - td->name, __FILE__, __LINE__); - return -1; - } - - /* - * Iterate over structure members and check their validity. - */ - for(edx = 0; edx < td->elements_count; edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - const void *memb_ptr; - - if(elm->flags & ATF_POINTER) { - memb_ptr = *(const void * const *)((const char *)sptr + elm->memb_offset); - if(!memb_ptr) { - if(elm->optional) - continue; - _ASN_CTFAIL(app_key, td, - "%s: mandatory element %s absent (%s:%d)", - td->name, elm->name, __FILE__, __LINE__); - return -1; - } - } else { - memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); - } - - if(elm->memb_constraints) { - int ret = elm->memb_constraints(elm->type, memb_ptr, - ctfailcb, app_key); - if(ret) return ret; - } else { - int ret = elm->type->check_constraints(elm->type, - memb_ptr, ctfailcb, app_key); - if(ret) return ret; - /* - * Cannot inherit it earlier: - * need to make sure we get the updated version. - */ - elm->memb_constraints = elm->type->check_constraints; - } - } - - return 0; -} - -asn_dec_rval_t -SEQUENCE_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_SEQUENCE_specifics_t *specs = (asn_SEQUENCE_specifics_t *)td->specifics; - void *st = *sptr; /* Target structure. */ - int extpresent = 0; /* Extension additions are present */ - uint8_t *opres; /* Presence of optional root members */ - asn_per_data_t opmd; - asn_dec_rval_t rv; - int edx; - - (void)constraints; - - if(_ASN_STACK_OVERFLOW_CHECK(opt_codec_ctx)) - _ASN_DECODE_FAILED; - - if(!st) { - st = *sptr = CALLOC(1, specs->struct_size); - if(!st) _ASN_DECODE_FAILED; - } - - ASN_DEBUG("Decoding %s as SEQUENCE (UPER)", td->name); - - /* Handle extensions */ - if(specs->ext_before >= 0) { - extpresent = per_get_few_bits(pd, 1); - if(extpresent < 0) _ASN_DECODE_STARVED; - } - - /* Prepare a place and read-in the presence bitmap */ - if(specs->roms_count) { - opres = (uint8_t *)MALLOC(((specs->roms_count + 7) >> 3) + 1); - if(!opres) _ASN_DECODE_FAILED; - /* Get the presence map */ - if(per_get_many_bits(pd, opres, 0, specs->roms_count)) { - FREEMEM(opres); - _ASN_DECODE_STARVED; - } - opmd.buffer = opres; - opmd.nboff = 0; - opmd.nbits = specs->roms_count; - ASN_DEBUG("Read in presence bitmap for %s of %d bits (%x..)", - td->name, specs->roms_count, *opres); - } else { - opres = 0; - memset(&opmd, 0, sizeof opmd); - } - - /* - * Get the sequence ROOT elements. - */ - for(edx = 0; edx < ((specs->ext_before < 0) - ? td->elements_count : specs->ext_before + 1); edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - void *memb_ptr; /* Pointer to the member */ - void **memb_ptr2; /* Pointer to that pointer */ - - /* Fetch the pointer to this member */ - if(elm->flags & ATF_POINTER) { - memb_ptr2 = (void **)((char *)st + elm->memb_offset); - } else { - memb_ptr = (char *)st + elm->memb_offset; - memb_ptr2 = &memb_ptr; - } - - /* Deal with optionality */ - if(elm->optional) { - int present = per_get_few_bits(&opmd, 1); - ASN_DEBUG("Member %s->%s is optional, p=%d (%d->%d)", - td->name, elm->name, present, - (int)opmd.nboff, (int)opmd.nbits); - if(present == 0) { - /* This element is not present */ - if(elm->default_value) { - /* Fill-in DEFAULT */ - if(elm->default_value(1, memb_ptr2)) { - FREEMEM(opres); - _ASN_DECODE_FAILED; - } - } - /* The member is just not present */ - continue; - } - /* Fall through */ - } - - /* Fetch the member from the stream */ - ASN_DEBUG("Decoding member %s in %s", elm->name, td->name); - rv = elm->type->uper_decoder(opt_codec_ctx, elm->type, - elm->per_constraints, memb_ptr2, pd); - if(rv.code != RC_OK) { - ASN_DEBUG("Failed decode %s in %s", - elm->name, td->name); - FREEMEM(opres); - return rv; - } - } - - /* - * Deal with extensions. - */ - if(extpresent) { - ASN_DEBUG("Extensibility for %s: NOT IMPLEMENTED", td->name); - _ASN_DECODE_FAILED; - } else { - for(edx = specs->roms_count; edx < specs->roms_count - + specs->aoms_count; edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - void *memb_ptr; /* Pointer to the member */ - void **memb_ptr2; /* Pointer to that pointer */ - - if(!elm->default_value) continue; - - /* Fetch the pointer to this member */ - if(elm->flags & ATF_POINTER) { - memb_ptr2 = (void **)((char *)st - + elm->memb_offset); - } else { - memb_ptr = (char *)st + elm->memb_offset; - memb_ptr2 = &memb_ptr; - } - - /* Set default value */ - if(elm->default_value(1, memb_ptr2)) { - FREEMEM(opres); - _ASN_DECODE_FAILED; - } - } - } - - rv.consumed = 0; - rv.code = RC_OK; - FREEMEM(opres); - return rv; -} - -asn_enc_rval_t -SEQUENCE_encode_uper(asn_TYPE_descriptor_t *td, - asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) { - asn_SEQUENCE_specifics_t *specs - = (asn_SEQUENCE_specifics_t *)td->specifics; - asn_enc_rval_t er; - int edx; - int i; - - (void)constraints; - - if(!sptr) - _ASN_ENCODE_FAILED; - - er.encoded = 0; - - ASN_DEBUG("Encoding %s as SEQUENCE (UPER)", td->name); - if(specs->ext_before >= 0) - _ASN_ENCODE_FAILED; /* We don't encode extensions yet */ - - /* Encode a presence bitmap */ - for(i = 0; i < specs->roms_count; i++) { - asn_TYPE_member_t *elm; - void *memb_ptr; /* Pointer to the member */ - void **memb_ptr2; /* Pointer to that pointer */ - int present; - - edx = specs->oms[i]; - elm = &td->elements[edx]; - - /* Fetch the pointer to this member */ - if(elm->flags & ATF_POINTER) { - memb_ptr2 = (void **)((char *)sptr + elm->memb_offset); - present = (*memb_ptr2 != 0); - } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - memb_ptr2 = &memb_ptr; - present = 1; - } - - /* Eliminate default values */ - if(present && elm->default_value - && elm->default_value(0, memb_ptr2) == 1) - present = 0; - - ASN_DEBUG("Element %s %s %s->%s is %s", - elm->flags & ATF_POINTER ? "ptr" : "inline", - elm->default_value ? "def" : "wtv", - td->name, elm->name, present ? "present" : "absent"); - if(per_put_few_bits(po, present, 1)) - _ASN_ENCODE_FAILED; - } - - /* - * Get the sequence ROOT elements. - */ - for(edx = 0; edx < ((specs->ext_before < 0) - ? td->elements_count : specs->ext_before + 1); edx++) { - asn_TYPE_member_t *elm = &td->elements[edx]; - void *memb_ptr; /* Pointer to the member */ - void **memb_ptr2; /* Pointer to that pointer */ - - /* Fetch the pointer to this member */ - if(elm->flags & ATF_POINTER) { - memb_ptr2 = (void **)((char *)sptr + elm->memb_offset); - if(!*memb_ptr2) { - ASN_DEBUG("Element %s %d not present", - elm->name, edx); - if(elm->optional) - continue; - /* Mandatory element is missing */ - _ASN_ENCODE_FAILED; - } - } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - memb_ptr2 = &memb_ptr; - } - - /* Eliminate default values */ - if(elm->default_value && elm->default_value(0, memb_ptr2) == 1) - continue; - - er = elm->type->uper_encoder(elm->type, elm->per_constraints, - *memb_ptr2, po); - if(er.encoded == -1) - return er; - } - - _ASN_ENCODED_OK(er); -} -