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Diffstat (limited to 'src/crypto/asn1/tasn_fre.c')
| -rw-r--r-- | src/crypto/asn1/tasn_fre.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/crypto/asn1/tasn_fre.c b/src/crypto/asn1/tasn_fre.c new file mode 100644 index 0000000..c344ed7 --- /dev/null +++ b/src/crypto/asn1/tasn_fre.c @@ -0,0 +1,264 @@ +/* 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 <openssl/asn1t.h> +#include <openssl/mem.h> + + +static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine); + +/* Free up an ASN1 structure */ + +void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it) + { + asn1_item_combine_free(&val, it, 0); + } + +void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it) + { + asn1_item_combine_free(pval, it, 0); + } + +static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine) + { + const ASN1_TEMPLATE *tt = NULL, *seqtt; + const ASN1_EXTERN_FUNCS *ef; + const ASN1_COMPAT_FUNCS *cf; + const ASN1_AUX *aux = it->funcs; + ASN1_aux_cb *asn1_cb; + int i; + if (!pval) + return; + if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval) + return; + if (aux && aux->asn1_cb) + asn1_cb = aux->asn1_cb; + else + asn1_cb = 0; + + switch(it->itype) + { + + case ASN1_ITYPE_PRIMITIVE: + if (it->templates) + ASN1_template_free(pval, it->templates); + else + ASN1_primitive_free(pval, it); + break; + + case ASN1_ITYPE_MSTRING: + ASN1_primitive_free(pval, it); + break; + + case ASN1_ITYPE_CHOICE: + if (asn1_cb) + { + i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL); + if (i == 2) + return; + } + i = asn1_get_choice_selector(pval, it); + if ((i >= 0) && (i < it->tcount)) + { + ASN1_VALUE **pchval; + tt = it->templates + i; + pchval = asn1_get_field_ptr(pval, tt); + ASN1_template_free(pchval, tt); + } + if (asn1_cb) + asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL); + if (!combine) + { + OPENSSL_free(*pval); + *pval = NULL; + } + break; + + case ASN1_ITYPE_COMPAT: + cf = it->funcs; + if (cf && cf->asn1_free) + cf->asn1_free(*pval); + break; + + case ASN1_ITYPE_EXTERN: + ef = it->funcs; + if (ef && ef->asn1_ex_free) + ef->asn1_ex_free(pval, it); + break; + + case ASN1_ITYPE_NDEF_SEQUENCE: + case ASN1_ITYPE_SEQUENCE: + if (asn1_do_lock(pval, -1, it) > 0) + return; + if (asn1_cb) + { + i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL); + if (i == 2) + return; + } + asn1_enc_free(pval, it); + /* If we free up as normal we will invalidate any + * ANY DEFINED BY field and we wont be able to + * determine the type of the field it defines. So + * free up in reverse order. + */ + tt = it->templates + it->tcount - 1; + for (i = 0; i < it->tcount; tt--, i++) + { + ASN1_VALUE **pseqval; + seqtt = asn1_do_adb(pval, tt, 0); + if (!seqtt) + continue; + pseqval = asn1_get_field_ptr(pval, seqtt); + ASN1_template_free(pseqval, seqtt); + } + if (asn1_cb) + asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL); + if (!combine) + { + OPENSSL_free(*pval); + *pval = NULL; + } + break; + } + } + +void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) + { + size_t i; + if (tt->flags & ASN1_TFLG_SK_MASK) + { + STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval; + for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) + { + ASN1_VALUE *vtmp; + vtmp = sk_ASN1_VALUE_value(sk, i); + asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item), + 0); + } + sk_ASN1_VALUE_free(sk); + *pval = NULL; + } + else + asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item), + tt->flags & ASN1_TFLG_COMBINE); + } + +void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it) + { + int utype; + if (it) + { + const ASN1_PRIMITIVE_FUNCS *pf; + pf = it->funcs; + if (pf && pf->prim_free) + { + pf->prim_free(pval, it); + return; + } + } + /* Special case: if 'it' is NULL free contents of ASN1_TYPE */ + if (!it) + { + ASN1_TYPE *typ = (ASN1_TYPE *)*pval; + utype = typ->type; + pval = &typ->value.asn1_value; + if (!*pval) + return; + } + else if (it->itype == ASN1_ITYPE_MSTRING) + { + utype = -1; + if (!*pval) + return; + } + else + { + utype = it->utype; + if ((utype != V_ASN1_BOOLEAN) && !*pval) + return; + } + + switch(utype) + { + case V_ASN1_OBJECT: + ASN1_OBJECT_free((ASN1_OBJECT *)*pval); + break; + + case V_ASN1_BOOLEAN: + if (it) + *(ASN1_BOOLEAN *)pval = it->size; + else + *(ASN1_BOOLEAN *)pval = -1; + return; + + case V_ASN1_NULL: + break; + + case V_ASN1_ANY: + ASN1_primitive_free(pval, NULL); + OPENSSL_free(*pval); + break; + + default: + ASN1_STRING_free((ASN1_STRING *)*pval); + *pval = NULL; + break; + } + *pval = NULL; + } |