/* tasn_fre.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2000.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
*
*/
-
#include <stddef.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/objects.h>
+#include "asn1_locl.h"
-static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine);
+static void asn1_item_embed_free(ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int embed);
/* Free up an ASN1 structure */
void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
- {
- asn1_item_combine_free(&val, it, 0);
- }
+{
+ asn1_item_embed_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 (asn1_cb)
- asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
- 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 = (ASN1_VALUE **)&typ->value.ptr;
- 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;
- }
+{
+ asn1_item_embed_free(pval, it, 0);
+}
+
+static void asn1_item_embed_free(ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int embed)
+{
+ const ASN1_TEMPLATE *tt = NULL, *seqtt;
+ const ASN1_EXTERN_FUNCS *ef;
+ 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 (embed == 0) {
+ OPENSSL_free(*pval);
+ *pval = NULL;
+ }
+ 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 (embed == 0) {
+ OPENSSL_free(*pval);
+ *pval = NULL;
+ }
+ break;
+ }
+}
+
+void asn1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+ int embed = tt->flags & ASN1_TFLG_EMBED;
+ ASN1_VALUE *tval;
+ if (embed) {
+ tval = (ASN1_VALUE *)pval;
+ pval = &tval;
+ }
+ if (tt->flags & ASN1_TFLG_SK_MASK) {
+ STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+ int i;
+
+ for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+ ASN1_VALUE *vtmp = sk_ASN1_VALUE_value(sk, i);
+
+ asn1_item_embed_free(&vtmp, ASN1_ITEM_ptr(tt->item), embed);
+ }
+ sk_ASN1_VALUE_free(sk);
+ *pval = NULL;
+ } else {
+ asn1_item_embed_free(pval, ASN1_ITEM_ptr(tt->item), embed);
+ }
+}
+
+void asn1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ int utype;
+
+ /* Special case: if 'it' is a primitive with a free_func, use that. */
+ if (it) {
+ const ASN1_PRIMITIVE_FUNCS *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);
+ break;
+ }
+ *pval = NULL;
+}
projects / openssl.git / blobdiff