diff options
Diffstat (limited to 'src/crypto/asn1/tasn_new.c')
| -rw-r--r-- | src/crypto/asn1/tasn_new.c | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/src/crypto/asn1/tasn_new.c b/src/crypto/asn1/tasn_new.c new file mode 100644 index 0000000..b68eed7 --- /dev/null +++ b/src/crypto/asn1/tasn_new.c @@ -0,0 +1,396 @@ +/* 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> + + +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); +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_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; + +#ifdef CRYPTO_MDEBUG + if (it->sname) + CRYPTO_push_info(it->sname); +#endif + + 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, NULL); + if (!i) + goto auxerr; + if (i==2) + { +#ifdef CRYPTO_MDEBUG + if (it->sname) + CRYPTO_pop_info(); +#endif + 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, NULL)) + goto auxerr; + break; + + case ASN1_ITYPE_NDEF_SEQUENCE: + case ASN1_ITYPE_SEQUENCE: + if (asn1_cb) + { + i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); + if (!i) + goto auxerr; + if (i==2) + { +#ifdef CRYPTO_MDEBUG + if (it->sname) + CRYPTO_pop_info(); +#endif + 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, NULL)) + goto auxerr; + break; + } +#ifdef CRYPTO_MDEBUG + if (it->sname) CRYPTO_pop_info(); +#endif + return 1; + + memerr: + OPENSSL_PUT_ERROR(ASN1, asn1_item_ex_combine_new, ERR_R_MALLOC_FAILURE); +#ifdef CRYPTO_MDEBUG + if (it->sname) CRYPTO_pop_info(); +#endif + return 0; + + auxerr: + OPENSSL_PUT_ERROR(ASN1, asn1_item_ex_combine_new, ASN1_R_AUX_ERROR); + ASN1_item_ex_free(pval, it); +#ifdef CRYPTO_MDEBUG + if (it->sname) CRYPTO_pop_info(); +#endif + 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: + case ASN1_ITYPE_NDEF_SEQUENCE: + *pval = NULL; + break; + } + } + + +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; + } +#ifdef CRYPTO_MDEBUG + if (tt->field_name) + CRYPTO_push_info(tt->field_name); +#endif + /* 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, ASN1_template_new, 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: +#ifdef CRYPTO_MDEBUG + if (it->sname) + CRYPTO_pop_info(); +#endif + 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. + */ + +int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it) + { + ASN1_TYPE *typ; + ASN1_STRING *str; + int utype; + + if (it && it->funcs) + { + const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; + if (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: + str = ASN1_STRING_type_new(utype); + if (it->itype == ASN1_ITYPE_MSTRING && str) + str->flags |= ASN1_STRING_FLAG_MSTRING; + *pval = (ASN1_VALUE *)str; + break; + } + if (*pval) + return 1; + return 0; + } + +static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) + { + int utype; + if (it && it->funcs) + { + const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; + 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; + } |