| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] */ |
| |
| #include <openssl/asn1.h> |
| |
| #include <string.h> |
| |
| #include <openssl/asn1t.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| |
| #include "internal.h" |
| #include "../internal.h" |
| |
| |
| static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, |
| int combine); |
| static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it); |
| static int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); |
| static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); |
| static int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it); |
| static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it); |
| |
| ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it) |
| { |
| ASN1_VALUE *ret = NULL; |
| if (ASN1_item_ex_new(&ret, it) > 0) |
| return ret; |
| return NULL; |
| } |
| |
| /* Allocate an ASN1 structure */ |
| |
| int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it) |
| { |
| return asn1_item_ex_combine_new(pval, it, 0); |
| } |
| |
| static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, |
| int combine) |
| { |
| const ASN1_TEMPLATE *tt = NULL; |
| const ASN1_EXTERN_FUNCS *ef; |
| ASN1_VALUE **pseqval; |
| int i; |
| |
| switch (it->itype) { |
| |
| case ASN1_ITYPE_EXTERN: |
| ef = it->funcs; |
| if (ef && ef->asn1_ex_new) { |
| if (!ef->asn1_ex_new(pval, it)) |
| goto memerr; |
| } |
| break; |
| |
| case ASN1_ITYPE_PRIMITIVE: |
| if (it->templates) { |
| if (!ASN1_template_new(pval, it->templates)) |
| goto memerr; |
| } else if (!ASN1_primitive_new(pval, it)) |
| goto memerr; |
| break; |
| |
| case ASN1_ITYPE_MSTRING: |
| if (!ASN1_primitive_new(pval, it)) |
| goto memerr; |
| break; |
| |
| case ASN1_ITYPE_CHOICE: { |
| const ASN1_AUX *aux = it->funcs; |
| ASN1_aux_cb *asn1_cb = aux != NULL ? aux->asn1_cb : NULL; |
| if (asn1_cb) { |
| i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); |
| if (!i) |
| goto auxerr; |
| if (i == 2) { |
| return 1; |
| } |
| } |
| if (!combine) { |
| *pval = OPENSSL_malloc(it->size); |
| if (!*pval) |
| goto memerr; |
| OPENSSL_memset(*pval, 0, it->size); |
| } |
| asn1_set_choice_selector(pval, -1, it); |
| if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL)) |
| goto auxerr2; |
| break; |
| } |
| |
| case ASN1_ITYPE_SEQUENCE: { |
| const ASN1_AUX *aux = it->funcs; |
| ASN1_aux_cb *asn1_cb = aux != NULL ? aux->asn1_cb : NULL; |
| if (asn1_cb) { |
| i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); |
| if (!i) |
| goto auxerr; |
| if (i == 2) { |
| return 1; |
| } |
| } |
| if (!combine) { |
| *pval = OPENSSL_malloc(it->size); |
| if (!*pval) |
| goto memerr; |
| OPENSSL_memset(*pval, 0, it->size); |
| asn1_refcount_set_one(pval, it); |
| asn1_enc_init(pval, it); |
| } |
| for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { |
| pseqval = asn1_get_field_ptr(pval, tt); |
| if (!ASN1_template_new(pseqval, tt)) |
| goto memerr2; |
| } |
| if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL)) |
| goto auxerr2; |
| break; |
| } |
| } |
| return 1; |
| |
| memerr2: |
| asn1_item_combine_free(pval, it, combine); |
| memerr: |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| return 0; |
| |
| auxerr2: |
| asn1_item_combine_free(pval, it, combine); |
| auxerr: |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR); |
| return 0; |
| |
| } |
| |
| static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) |
| { |
| const ASN1_EXTERN_FUNCS *ef; |
| |
| switch (it->itype) { |
| |
| case ASN1_ITYPE_EXTERN: |
| ef = it->funcs; |
| if (ef && ef->asn1_ex_clear) |
| ef->asn1_ex_clear(pval, it); |
| else |
| *pval = NULL; |
| break; |
| |
| case ASN1_ITYPE_PRIMITIVE: |
| if (it->templates) |
| asn1_template_clear(pval, it->templates); |
| else |
| asn1_primitive_clear(pval, it); |
| break; |
| |
| case ASN1_ITYPE_MSTRING: |
| asn1_primitive_clear(pval, it); |
| break; |
| |
| case ASN1_ITYPE_CHOICE: |
| case ASN1_ITYPE_SEQUENCE: |
| *pval = NULL; |
| break; |
| } |
| } |
| |
| static int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) |
| { |
| const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item); |
| int ret; |
| if (tt->flags & ASN1_TFLG_OPTIONAL) { |
| asn1_template_clear(pval, tt); |
| return 1; |
| } |
| /* If ANY DEFINED BY nothing to do */ |
| |
| if (tt->flags & ASN1_TFLG_ADB_MASK) { |
| *pval = NULL; |
| return 1; |
| } |
| /* If SET OF or SEQUENCE OF, its a STACK */ |
| if (tt->flags & ASN1_TFLG_SK_MASK) { |
| STACK_OF(ASN1_VALUE) *skval; |
| skval = sk_ASN1_VALUE_new_null(); |
| if (!skval) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| ret = 0; |
| goto done; |
| } |
| *pval = (ASN1_VALUE *)skval; |
| ret = 1; |
| goto done; |
| } |
| /* Otherwise pass it back to the item routine */ |
| ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE); |
| done: |
| return ret; |
| } |
| |
| static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) |
| { |
| /* If ADB or STACK just NULL the field */ |
| if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK)) |
| *pval = NULL; |
| else |
| asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item)); |
| } |
| |
| /* |
| * NB: could probably combine most of the real XXX_new() behaviour and junk |
| * all the old functions. |
| */ |
| |
| static int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it) |
| { |
| ASN1_TYPE *typ; |
| int utype; |
| |
| if (!it) |
| return 0; |
| |
| /* Historically, |it->funcs| for primitive types contained an |
| * |ASN1_PRIMITIVE_FUNCS| table of calbacks. */ |
| assert(it->funcs == NULL); |
| |
| if (it->itype == ASN1_ITYPE_MSTRING) |
| utype = -1; |
| else |
| utype = it->utype; |
| switch (utype) { |
| case V_ASN1_OBJECT: |
| *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef); |
| return 1; |
| |
| case V_ASN1_BOOLEAN: |
| *(ASN1_BOOLEAN *)pval = it->size; |
| return 1; |
| |
| case V_ASN1_NULL: |
| *pval = (ASN1_VALUE *)1; |
| return 1; |
| |
| case V_ASN1_ANY: |
| typ = OPENSSL_malloc(sizeof(ASN1_TYPE)); |
| if (!typ) |
| return 0; |
| typ->value.ptr = NULL; |
| typ->type = -1; |
| *pval = (ASN1_VALUE *)typ; |
| break; |
| |
| default: |
| *pval = (ASN1_VALUE *)ASN1_STRING_type_new(utype); |
| break; |
| } |
| if (*pval) |
| return 1; |
| return 0; |
| } |
| |
| static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) |
| { |
| int utype; |
| /* Historically, |it->funcs| for primitive types contained an |
| * |ASN1_PRIMITIVE_FUNCS| table of calbacks. */ |
| assert(it == NULL || it->funcs == NULL); |
| if (!it || (it->itype == ASN1_ITYPE_MSTRING)) |
| utype = -1; |
| else |
| utype = it->utype; |
| if (utype == V_ASN1_BOOLEAN) |
| *(ASN1_BOOLEAN *)pval = it->size; |
| else |
| *pval = NULL; |
| } |
