X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/b27841d687ec9e84983340b5581376dfb24010ea..b2b89723a2427bba8290bd6967a1ab39cbb630be:/libs/smux/constr_CHOICE.c diff --git a/libs/smux/constr_CHOICE.c b/libs/smux/constr_CHOICE.c index 6116e6a6..628979ec 100644 --- a/libs/smux/constr_CHOICE.c +++ b/libs/smux/constr_CHOICE.c @@ -1,6 +1,5 @@ /* - * Copyright (c) 2003, 2004, 2005, 2006, 2007 Lev Walkin . - * All rights reserved. + * Copyright (c) 2003-2017 Lev Walkin . All rights reserved. * Redistribution and modifications are permitted subject to BSD license. */ #include @@ -63,8 +62,13 @@ /* * See the definitions. */ -static int _fetch_present_idx(const void *struct_ptr, int off, int size); -static void _set_present_idx(void *sptr, int offset, int size, int pres); +static unsigned _fetch_present_idx(const void *struct_ptr, unsigned off, + unsigned size); +static void _set_present_idx(void *sptr, unsigned offset, unsigned size, + unsigned pres); +static const void *_get_member_ptr(const asn_TYPE_descriptor_t *, + const void *sptr, asn_TYPE_member_t **elm, + unsigned *present); /* * Tags are canonically sorted in the tag to member table. @@ -98,12 +102,14 @@ _search4tag(const void *ap, const void *bp) { * The decoder of the CHOICE type. */ asn_dec_rval_t -CHOICE_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) { - /* +CHOICE_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. */ - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; asn_TYPE_member_t *elements = td->elements; /* @@ -259,7 +265,7 @@ CHOICE_decode_ber(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, /* * Invoke the member fetch routine according to member's type */ - rval = elm->type->ber_decoder(opt_codec_ctx, elm->type, + rval = elm->type->op->ber_decoder(opt_codec_ctx, elm->type, memb_ptr2, ptr, LEFT, elm->tag_mode); switch(rval.code) { case RC_OK: @@ -354,15 +360,15 @@ CHOICE_decode_ber(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, } asn_enc_rval_t -CHOICE_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) { - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; +CHOICE_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_CHOICE_specifics_t *specs = (const asn_CHOICE_specifics_t *)td->specifics; asn_TYPE_member_t *elm; /* CHOICE element */ asn_enc_rval_t erval; - void *memb_ptr; + const void *memb_ptr; size_t computed_size = 0; - int present; + unsigned present; if(!sptr) ASN__ENCODE_FAILED; @@ -376,7 +382,7 @@ CHOICE_encode_der(asn_TYPE_descriptor_t *td, void *sptr, * If the structure was not initialized, it cannot be encoded: * can't deduce what to encode in the choice type. */ - if(present <= 0 || present > td->elements_count) { + if(present == 0 || present > td->elements_count) { if(present == 0 && td->elements_count == 0) { /* The CHOICE is empty?! */ erval.encoded = 0; @@ -390,8 +396,9 @@ CHOICE_encode_der(asn_TYPE_descriptor_t *td, void *sptr, */ elm = &td->elements[present-1]; if(elm->flags & ATF_POINTER) { - memb_ptr = *(void **)((char *)sptr + elm->memb_offset); - if(memb_ptr == 0) { + memb_ptr = + *(const void *const *)((const char *)sptr + elm->memb_offset); + if(memb_ptr == 0) { if(elm->optional) { erval.encoded = 0; ASN__ENCODED_OK(erval); @@ -400,8 +407,8 @@ CHOICE_encode_der(asn_TYPE_descriptor_t *td, void *sptr, ASN__ENCODE_FAILED; } } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - } + memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); + } /* * If the CHOICE itself is tagged EXPLICIT: @@ -415,7 +422,7 @@ CHOICE_encode_der(asn_TYPE_descriptor_t *td, void *sptr, ssize_t ret; /* Encode member with its tag */ - erval = elm->type->der_encoder(elm->type, memb_ptr, + erval = elm->type->op->der_encoder(elm->type, memb_ptr, elm->tag_mode, elm->tag, 0, 0); if(erval.encoded == -1) return erval; @@ -431,7 +438,7 @@ CHOICE_encode_der(asn_TYPE_descriptor_t *td, void *sptr, /* * Encode the single underlying member. */ - erval = elm->type->der_encoder(elm->type, memb_ptr, + erval = elm->type->op->der_encoder(elm->type, memb_ptr, elm->tag_mode, elm->tag, cb, app_key); if(erval.encoded == -1) return erval; @@ -446,8 +453,8 @@ CHOICE_encode_der(asn_TYPE_descriptor_t *td, void *sptr, ber_tlv_tag_t CHOICE_outmost_tag(const asn_TYPE_descriptor_t *td, const void *ptr, int tag_mode, ber_tlv_tag_t tag) { - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; - int present; + const asn_CHOICE_specifics_t *specs = (const asn_CHOICE_specifics_t *)td->specifics; + unsigned present; assert(tag_mode == 0); (void)tag_mode; assert(tag == 0); (void)tag; @@ -457,7 +464,7 @@ CHOICE_outmost_tag(const asn_TYPE_descriptor_t *td, const void *ptr, int tag_mod */ present = _fetch_present_idx(ptr, specs->pres_offset, specs->pres_size); - if(present > 0 || present <= td->elements_count) { + if(present > 0 && present <= td->elements_count) { const asn_TYPE_member_t *elm = &td->elements[present-1]; const void *memb_ptr; @@ -477,10 +484,11 @@ CHOICE_outmost_tag(const asn_TYPE_descriptor_t *td, const void *ptr, int tag_mod } int -CHOICE_constraint(asn_TYPE_descriptor_t *td, const void *sptr, - asn_app_constraint_failed_f *ctfailcb, void *app_key) { - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; - int present; +CHOICE_constraint(const asn_TYPE_descriptor_t *td, const void *sptr, + asn_app_constraint_failed_f *ctfailcb, void *app_key) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + unsigned present; if(!sptr) { ASN__CTFAIL(app_key, td, sptr, @@ -511,18 +519,12 @@ CHOICE_constraint(asn_TYPE_descriptor_t *td, const void *sptr, memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); } - if(elm->memb_constraints) { - return elm->memb_constraints(elm->type, memb_ptr, + if(elm->encoding_constraints.general_constraints) { + return elm->encoding_constraints.general_constraints(elm->type, memb_ptr, ctfailcb, app_key); } else { - int ret = elm->type->check_constraints(elm->type, + return elm->type->encoding_constraints.general_constraints(elm->type, memb_ptr, ctfailcb, app_key); - /* - * Cannot inherit it eralier: - * need to make sure we get the updated version. - */ - elm->memb_constraints = elm->type->check_constraints; - return ret; } } else { ASN__CTFAIL(app_key, td, sptr, @@ -544,13 +546,13 @@ CHOICE_constraint(asn_TYPE_descriptor_t *td, const void *sptr, * Decode the XER (XML) data. */ asn_dec_rval_t -CHOICE_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) { - /* +CHOICE_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. */ - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; + const asn_CHOICE_specifics_t *specs = (const asn_CHOICE_specifics_t *)td->specifics; const char *xml_tag = opt_mname ? opt_mname : td->xml_tag; /* @@ -561,7 +563,7 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, asn_dec_rval_t rval; /* Return value of a decoder */ ssize_t consumed_myself = 0; /* Consumed bytes from ptr */ - int edx; /* Element index */ + size_t edx; /* Element index */ /* * Create the target structure if it is not present already. @@ -600,6 +602,7 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, asn_dec_rval_t tmprval; void *memb_ptr; /* Pointer to the member */ void **memb_ptr2; /* Pointer to that pointer */ + unsigned old_present; elm = &td->elements[edx]; @@ -613,19 +616,20 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, } /* Start/Continue decoding the inner member */ - tmprval = elm->type->xer_decoder(opt_codec_ctx, + tmprval = elm->type->op->xer_decoder(opt_codec_ctx, elm->type, memb_ptr2, elm->name, buf_ptr, size); XER_ADVANCE(tmprval.consumed); ASN_DEBUG("XER/CHOICE: itdf: [%s] code=%d", elm->type->name, tmprval.code); - if(tmprval.code != RC_OK) - RETURN(tmprval.code); - assert(_fetch_present_idx(st, - specs->pres_offset, specs->pres_size) == 0); + old_present = _fetch_present_idx(st, + specs->pres_offset, specs->pres_size); + assert(old_present == 0 || old_present == edx + 1); /* Record what we've got */ _set_present_idx(st, specs->pres_offset, specs->pres_size, edx + 1); + if(tmprval.code != RC_OK) + RETURN(tmprval.code); ctx->phase = 3; /* Fall through */ } @@ -671,7 +675,6 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, case -1: ctx->phase = 5; RETURN(RC_FAIL); - continue; case 1: ctx->phase = 3; /* Fall through */ @@ -773,12 +776,13 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, asn_enc_rval_t -CHOICE_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_CHOICE_specifics_t *specs=(asn_CHOICE_specifics_t *)td->specifics; - asn_enc_rval_t er; - int present; +CHOICE_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) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + asn_enc_rval_t er; + unsigned present; if(!sptr) ASN__ENCODE_FAILED; @@ -788,34 +792,34 @@ CHOICE_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, */ present = _fetch_present_idx(sptr, specs->pres_offset,specs->pres_size); - if(present <= 0 || present > td->elements_count) { + if(present == 0 || present > td->elements_count) { ASN__ENCODE_FAILED; } else { asn_enc_rval_t tmper; asn_TYPE_member_t *elm = &td->elements[present-1]; - void *memb_ptr; + const 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) ASN__ENCODE_FAILED; + memb_ptr = + *(const void *const *)((const char *)sptr + elm->memb_offset); + if(!memb_ptr) ASN__ENCODE_FAILED; } else { - memb_ptr = (void *)((char *)sptr + elm->memb_offset); - } + memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); + } - er.encoded = 0; + er.encoded = 0; - if(!(flags & XER_F_CANONICAL)) ASN__TEXT_INDENT(1, ilevel); + if(!(flags & XER_F_CANONICAL)) ASN__TEXT_INDENT(1, ilevel); ASN__CALLBACK3("<", 1, mname, mlen, ">", 1); - tmper = elm->type->xer_encoder(elm->type, memb_ptr, + tmper = elm->type->op->xer_encoder(elm->type, memb_ptr, ilevel + 1, flags, cb, app_key); if(tmper.encoded == -1) return tmper; + er.encoded += tmper.encoded; ASN__CALLBACK3("", 1); - - er.encoded += 5 + (2 * mlen) + tmper.encoded; } if(!(flags & XER_F_CANONICAL)) ASN__TEXT_INDENT(1, ilevel - 1); @@ -826,11 +830,14 @@ cb_failed: } asn_dec_rval_t -CHOICE_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_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; - asn_dec_rval_t rv; - asn_per_constraint_t *ct; +CHOICE_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) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + asn_dec_rval_t rv; + const asn_per_constraint_t *ct; asn_TYPE_member_t *elm; /* CHOICE's element */ void *memb_ptr; void **memb_ptr2; @@ -849,7 +856,7 @@ CHOICE_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, } if(constraints) ct = &constraints->value; - else if(td->per_constraints) ct = &td->per_constraints->value; + else if(td->encoding_constraints.per_constraints) ct = &td->encoding_constraints.per_constraints->value; else ct = 0; if(ct && ct->flags & APC_EXTENSIBLE) { @@ -871,13 +878,16 @@ CHOICE_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, value = uper_get_nsnnwn(pd); if(value < 0) ASN__DECODE_STARVED; value += specs->ext_start; - if(value >= td->elements_count) + if((unsigned)value >= td->elements_count) ASN__DECODE_FAILED; } /* Adjust if canonical order is different from natural order */ - if(specs->canonical_order) - value = specs->canonical_order[value]; + if(specs->from_canonical_order) { + ASN_DEBUG("CHOICE presence from wire %d", value); + value = specs->from_canonical_order[value]; + ASN_DEBUG("CHOICE presence index effective %d", value); + } /* Set presence to be able to free it later */ _set_present_idx(st, specs->pres_offset, specs->pres_size, value + 1); @@ -893,11 +903,11 @@ CHOICE_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, ASN_DEBUG("Discovered CHOICE %s encodes %s", td->name, elm->name); if(ct && ct->range_bits >= 0) { - rv = elm->type->uper_decoder(opt_codec_ctx, elm->type, - elm->per_constraints, memb_ptr2, pd); + rv = elm->type->op->uper_decoder(opt_codec_ctx, elm->type, + elm->encoding_constraints.per_constraints, memb_ptr2, pd); } else { rv = uper_open_type_get(opt_codec_ctx, elm->type, - elm->per_constraints, memb_ptr2, pd); + elm->encoding_constraints.per_constraints, memb_ptr2, pd); } if(rv.code != RC_OK) @@ -905,15 +915,16 @@ CHOICE_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, elm->name, td->name, rv.code); return rv; } - + asn_enc_rval_t -CHOICE_encode_uper(asn_TYPE_descriptor_t *td, - asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) { - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; +CHOICE_encode_uper(const asn_TYPE_descriptor_t *td, + const asn_per_constraints_t *constraints, const void *sptr, + asn_per_outp_t *po) { + const asn_CHOICE_specifics_t *specs = (const asn_CHOICE_specifics_t *)td->specifics; asn_TYPE_member_t *elm; /* CHOICE's element */ - asn_per_constraint_t *ct; - void *memb_ptr; - int present; + const asn_per_constraint_t *ct; + const void *memb_ptr; + unsigned present; int present_enc; if(!sptr) ASN__ENCODE_FAILED; @@ -921,34 +932,37 @@ CHOICE_encode_uper(asn_TYPE_descriptor_t *td, ASN_DEBUG("Encoding %s as CHOICE", td->name); if(constraints) ct = &constraints->value; - else if(td->per_constraints) ct = &td->per_constraints->value; + else if(td->encoding_constraints.per_constraints) + ct = &td->encoding_constraints.per_constraints->value; else ct = 0; - present = _fetch_present_idx(sptr, - specs->pres_offset, specs->pres_size); + present = _fetch_present_idx(sptr, specs->pres_offset, specs->pres_size); /* * If the structure was not initialized properly, it cannot be encoded: * can't deduce what to encode in the choice type. */ - if(present <= 0 || present > td->elements_count) + if(present == 0 || present > td->elements_count) ASN__ENCODE_FAILED; else present--; ASN_DEBUG("Encoding %s CHOICE element %d", td->name, present); - /* Adjust if canonical order is different from natural order */ - if(specs->canonical_order) - present_enc = specs->canonical_order[present]; - else - present_enc = present; + /* Adjust if canonical order is different from natural order */ + if(specs->to_canonical_order) + present_enc = specs->to_canonical_order[present]; + else + present_enc = present; - if(ct && ct->range_bits >= 0) { + if(ct && ct->range_bits >= 0) { if(present_enc < ct->lower_bound || present_enc > ct->upper_bound) { if(ct->flags & APC_EXTENSIBLE) { - if(per_put_few_bits(po, 1, 1)) + ASN_DEBUG( + "CHOICE member %d (enc %d) is an extension (%ld..%ld)", + present, present_enc, ct->lower_bound, ct->upper_bound); + if(per_put_few_bits(po, 1, 1)) ASN__ENCODE_FAILED; } else { ASN__ENCODE_FAILED; @@ -956,45 +970,52 @@ CHOICE_encode_uper(asn_TYPE_descriptor_t *td, ct = 0; } } - if(ct && ct->flags & APC_EXTENSIBLE) - if(per_put_few_bits(po, 0, 1)) + if(ct && ct->flags & APC_EXTENSIBLE) { + ASN_DEBUG("CHOICE member %d (enc %d) is not an extension (%ld..%ld)", + present, present_enc, ct->lower_bound, ct->upper_bound); + if(per_put_few_bits(po, 0, 1)) ASN__ENCODE_FAILED; + } + elm = &td->elements[present]; - if(elm->flags & ATF_POINTER) { + ASN_DEBUG("CHOICE member \"%s\" %d (as %d)", elm->name, present, + present_enc); + if(elm->flags & ATF_POINTER) { /* Member is a pointer to another structure */ - memb_ptr = *(void **)((char *)sptr + elm->memb_offset); - if(!memb_ptr) ASN__ENCODE_FAILED; - } else { - memb_ptr = (char *)sptr + elm->memb_offset; - } - - if(ct && ct->range_bits >= 0) { - if(per_put_few_bits(po, present_enc, ct->range_bits)) - ASN__ENCODE_FAILED; - - return elm->type->uper_encoder(elm->type, elm->per_constraints, - memb_ptr, po); + memb_ptr = + *(const void *const *)((const char *)sptr + elm->memb_offset); + if(!memb_ptr) ASN__ENCODE_FAILED; } else { - asn_enc_rval_t rval; - if(specs->ext_start == -1) - ASN__ENCODE_FAILED; - if(uper_put_nsnnwn(po, present_enc - specs->ext_start)) - ASN__ENCODE_FAILED; - if(uper_open_type_put(elm->type, elm->per_constraints, - memb_ptr, po)) - ASN__ENCODE_FAILED; - rval.encoded = 0; - ASN__ENCODED_OK(rval); - } + memb_ptr = (const char *)sptr + elm->memb_offset; + } + + if(ct && ct->range_bits >= 0) { + if(per_put_few_bits(po, present_enc, ct->range_bits)) + ASN__ENCODE_FAILED; + + return elm->type->op->uper_encoder( + elm->type, elm->encoding_constraints.per_constraints, memb_ptr, po); + } else { + asn_enc_rval_t rval; + if(specs->ext_start == -1) ASN__ENCODE_FAILED; + if(uper_put_nsnnwn(po, present_enc - specs->ext_start)) + ASN__ENCODE_FAILED; + if(uper_open_type_put(elm->type, + elm->encoding_constraints.per_constraints, + memb_ptr, po)) + ASN__ENCODE_FAILED; + rval.encoded = 0; + ASN__ENCODED_OK(rval); + } } - + int -CHOICE_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, - asn_app_consume_bytes_f *cb, void *app_key) { - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; - int present; +CHOICE_print(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, + asn_app_consume_bytes_f *cb, void *app_key) { + const asn_CHOICE_specifics_t *specs = (const asn_CHOICE_specifics_t *)td->specifics; + unsigned present; if(!sptr) return (cb("", 8, app_key) < 0) ? -1 : 0; @@ -1024,7 +1045,7 @@ CHOICE_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, return -1; } - return elm->type->print_struct(elm->type, memb_ptr, ilevel, + return elm->type->op->print_struct(elm->type, memb_ptr, ilevel, cb, app_key); } else { return (cb("", 8, app_key) < 0) ? -1 : 0; @@ -1032,9 +1053,11 @@ CHOICE_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, } void -CHOICE_free(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) { - asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; - int present; +CHOICE_free(const asn_TYPE_descriptor_t *td, void *ptr, + enum asn_struct_free_method method) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + unsigned present; if(!td || !ptr) return; @@ -1063,9 +1086,16 @@ CHOICE_free(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) { } } - if(!contents_only) { - FREEMEM(ptr); - } + 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; + } } @@ -1078,17 +1108,18 @@ CHOICE_free(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) { * is guaranteed to be aligned properly. ASN.1 compiler itself does not * produce packed code. */ -static int -_fetch_present_idx(const void *struct_ptr, int pres_offset, int pres_size) { - const void *present_ptr; - int present; +static unsigned +_fetch_present_idx(const void *struct_ptr, unsigned pres_offset, + unsigned pres_size) { + const void *present_ptr; + unsigned present; present_ptr = ((const char *)struct_ptr) + pres_offset; switch(pres_size) { - case sizeof(int): present = *(const int *)present_ptr; break; - case sizeof(short): present = *(const short *)present_ptr; break; - case sizeof(char): present = *(const char *)present_ptr; break; + case sizeof(int): present = *(const unsigned int *)present_ptr; break; + case sizeof(short): present = *(const unsigned short *)present_ptr; break; + case sizeof(char): present = *(const unsigned char *)present_ptr; break; default: /* ANSI C mandates enum to be equivalent to integer */ assert(pres_size != sizeof(int)); @@ -1099,16 +1130,211 @@ _fetch_present_idx(const void *struct_ptr, int pres_offset, int pres_size) { } static void -_set_present_idx(void *struct_ptr, int pres_offset, int pres_size, int present) { - void *present_ptr; +_set_present_idx(void *struct_ptr, unsigned pres_offset, unsigned pres_size, + unsigned present) { + void *present_ptr; present_ptr = ((char *)struct_ptr) + pres_offset; switch(pres_size) { - case sizeof(int): *(int *)present_ptr = present; break; - case sizeof(short): *(short *)present_ptr = present; break; - case sizeof(char): *(char *)present_ptr = present; break; + case sizeof(int): *(unsigned int *)present_ptr = present; break; + case sizeof(short): *(unsigned short *)present_ptr = present; break; + case sizeof(char): *(unsigned char *)present_ptr = present; break; default: /* ANSI C mandates enum to be equivalent to integer */ assert(pres_size != sizeof(int)); } } + +static const void * +_get_member_ptr(const asn_TYPE_descriptor_t *td, const void *sptr, + asn_TYPE_member_t **elm_ptr, unsigned *present_out) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + unsigned present; + + if(!sptr) { + *elm_ptr = NULL; + *present_out = 0; + return NULL; + } + + /* + * Figure out which CHOICE element is encoded. + */ + present = _fetch_present_idx(sptr, specs->pres_offset, specs->pres_size); + *present_out = present; + + /* + * The presence index is intentionally 1-based to avoid + * treating zeroed structure as a valid one. + */ + if(present > 0 && present <= td->elements_count) { + asn_TYPE_member_t *const elm = &td->elements[present - 1]; + const void *memb_ptr; + + if(elm->flags & ATF_POINTER) { + memb_ptr = + *(const void *const *)((const char *)sptr + elm->memb_offset); + } else { + memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); + } + *elm_ptr = elm; + return memb_ptr; + } else { + *elm_ptr = NULL; + return NULL; + } + +} + +int +CHOICE_compare(const asn_TYPE_descriptor_t *td, const void *aptr, const void *bptr) { + asn_TYPE_member_t *aelm; + asn_TYPE_member_t *belm; + unsigned apresent = 0; + unsigned bpresent = 0; + const void *amember = _get_member_ptr(td, aptr, &aelm, &apresent); + const void *bmember = _get_member_ptr(td, bptr, &belm, &bpresent); + + if(amember && bmember) { + if(apresent == bpresent) { + assert(aelm == belm); + return aelm->type->op->compare_struct(aelm->type, amember, bmember); + } else if(apresent < bpresent) { + return -1; + } else { + return 1; + } + } else if(!amember) { + return -1; + } else { + return 1; + } +} + +/* + * Return the 1-based choice variant presence index. + * Returns 0 in case of error. + */ +unsigned +CHOICE_variant_get_presence(const asn_TYPE_descriptor_t *td, const void *sptr) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + return _fetch_present_idx(sptr, specs->pres_offset, specs->pres_size); +} + +/* + * Sets or resets the 1-based choice variant presence index. + * In case a previous index is not zero, the currently selected structure + * member is freed and zeroed-out first. + * Returns 0 on success and -1 on error. + */ +int +CHOICE_variant_set_presence(const asn_TYPE_descriptor_t *td, void *sptr, + unsigned present) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + unsigned old_present; + + if(!sptr) { + return -1; + } + + if(present > td->elements_count) + return -1; + + old_present = + _fetch_present_idx(sptr, specs->pres_offset, specs->pres_size); + if(present == old_present) + return 0; + + if(old_present != 0) { + assert(old_present <= td->elements_count); + ASN_STRUCT_RESET(*td, sptr); + } + + _set_present_idx(sptr, specs->pres_offset, specs->pres_size, present); + + return 0; +} + + +asn_random_fill_result_t +CHOICE_random_fill(const asn_TYPE_descriptor_t *td, void **sptr, + const asn_encoding_constraints_t *constr, + size_t max_length) { + const asn_CHOICE_specifics_t *specs = + (const asn_CHOICE_specifics_t *)td->specifics; + asn_random_fill_result_t res; + 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; + unsigned present; + void *memb_ptr; /* Pointer to the member */ + void **memb_ptr2; /* Pointer to that pointer */ + void *st = *sptr; + + if(max_length == 0) return result_skipped; + + (void)constr; + + if(st == NULL) { + st = CALLOC(1, specs->struct_size); + if(st == NULL) { + return result_failed; + } + } + + present = asn_random_between(1, td->elements_count); + elm = &td->elements[present - 1]; + + 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; + } + + res = elm->type->op->random_fill(elm->type, memb_ptr2, + &elm->encoding_constraints, max_length); + _set_present_idx(st, specs->pres_offset, specs->pres_size, present); + if(res.code == ARFILL_OK) { + *sptr = st; + } else { + if(st == *sptr) { + ASN_STRUCT_RESET(*td, st); + } else { + ASN_STRUCT_FREE(*td, st); + } + } + + return res; +} + + +asn_TYPE_operation_t asn_OP_CHOICE = { + CHOICE_free, + CHOICE_print, + CHOICE_compare, + CHOICE_decode_ber, + CHOICE_encode_der, + CHOICE_decode_xer, + CHOICE_encode_xer, +#ifdef ASN_DISABLE_OER_SUPPORT + 0, + 0, +#else + CHOICE_decode_oer, + CHOICE_encode_oer, +#endif /* ASN_DISABLE_OER_SUPPORT */ +#ifdef ASN_DISABLE_PER_SUPPORT + 0, + 0, +#else + CHOICE_decode_uper, + CHOICE_encode_uper, +#endif /* ASN_DISABLE_PER_SUPPORT */ + CHOICE_random_fill, + CHOICE_outmost_tag +};