--- /dev/null
+/* tasn_fre.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) 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/asn1t.h>
+#include <openssl/objects.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)
+ {
+ int 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;
+ }
projects / cassiopeia.git / blobdiff