diff options
Diffstat (limited to 'crypto/asn1/tasn_new.c')
-rw-r--r-- | crypto/asn1/tasn_new.c | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/crypto/asn1/tasn_new.c b/crypto/asn1/tasn_new.c new file mode 100644 index 0000000000..d6f1155928 --- /dev/null +++ b/crypto/asn1/tasn_new.c @@ -0,0 +1,313 @@ +/* tasn_new.c */ +/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL + * project 2000. + */ +/* ==================================================================== + * Copyright (c) 2000 The OpenSSL Project. All rights reserved. + * + * 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 above 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 acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + + +#include <stddef.h> +#include <openssl/asn1.h> +#include <openssl/objects.h> +#include <openssl/err.h> +#include <openssl/asn1t.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 void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); +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_COMPAT_FUNCS *cf; + const ASN1_EXTERN_FUNCS *ef; + const ASN1_AUX *aux = it->funcs; + ASN1_aux_cb *asn1_cb; + ASN1_VALUE **pseqval; + int i; + if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb; + else asn1_cb = 0; + + if(!combine) *pval = NULL; + + 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_COMPAT: + cf = it->funcs; + if(cf && cf->asn1_new) { + *pval = cf->asn1_new(); + if(!*pval) 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: + if(asn1_cb) { + i = asn1_cb(ASN1_OP_NEW_PRE, pval, it); + if(!i) goto auxerr; + if(i==2) return 1; + } + if(!combine) { + *pval = OPENSSL_malloc(it->size); + if(!*pval) goto memerr; + memset(*pval, 0, it->size); + } + asn1_set_choice_selector(pval, -1, it); + if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it)) + goto auxerr; + break; + + case ASN1_ITYPE_SEQUENCE: + if(asn1_cb) { + i = asn1_cb(ASN1_OP_NEW_PRE, pval, it); + if(!i) goto auxerr; + if(i==2) return 1; + } + if(!combine) { + *pval = OPENSSL_malloc(it->size); + if(!*pval) goto memerr; + memset(*pval, 0, it->size); + asn1_do_lock(pval, 0, 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 memerr; + } + if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it)) + goto auxerr; + break; + } + return 1; + + memerr: + ASN1err(ASN1_F_ASN1_ITEM_NEW, ERR_R_MALLOC_FAILURE); + return 0; + + auxerr: + ASN1err(ASN1_F_ASN1_ITEM_NEW, ASN1_R_AUX_ERROR); + ASN1_item_ex_free(pval, it); + 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_COMPAT: + case ASN1_ITYPE_CHOICE: + case ASN1_ITYPE_SEQUENCE: + *pval = NULL; + break; + } +} + + +int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) +{ + const ASN1_ITEM *it = tt->item; + 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) { + ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE); + return 0; + } + *pval = (ASN1_VALUE *)skval; + return 1; + } + /* Otherwise pass it back to the item routine */ + return asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE); +} + +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, tt->item); +} + + +/* NB: could probably combine most of the real XXX_new() behaviour and junk all the old + * functions. + */ + +int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it) +{ + ASN1_TYPE *typ; + int utype; + const ASN1_PRIMITIVE_FUNCS *pf; + pf = it->funcs; + if(pf && pf->prim_new) return pf->prim_new(pval, it); + if(!it || (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; +} + +void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) +{ + int utype; + const ASN1_PRIMITIVE_FUNCS *pf; + pf = it->funcs; + if(pf) { + if(pf->prim_clear) + pf->prim_clear(pval, it); + else + *pval = NULL; + return; + } + 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; +} |