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-rw-r--r--crypto/store/str_mem.c383
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diff --git a/crypto/store/str_mem.c b/crypto/store/str_mem.c
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-/* crypto/store/str_mem.c */
-/*
- * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project
- * 2003.
- */
-/* ====================================================================
- * Copyright (c) 2003 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
- * openssl-core@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 <string.h>
-#include <openssl/err.h>
-#include "str_locl.h"
-
-/*
- * The memory store is currently highly experimental. It's meant to become a
- * base store used by other stores for internal caching (for full caching
- * support, aging needs to be added).
- *
- * The database use is meant to support as much attribute association as
- * possible, while providing for as small search ranges as possible. This is
- * currently provided for by sorting the entries by numbers that are composed
- * of bits set at the positions indicated by attribute type codes. This
- * provides for ranges determined by the highest attribute type code value.
- * A better idea might be to sort by values computed from the range of
- * attributes associated with the object (basically, the difference between
- * the highest and lowest attribute type code) and it's distance from a base
- * (basically, the lowest associated attribute type code).
- */
-
-typedef struct mem_object_data_st {
- STORE_OBJECT *object;
- STORE_ATTR_INFO *attr_info;
- int references;
-} MEM_OBJECT_DATA;
-
-DECLARE_STACK_OF(MEM_OBJECT_DATA)
-struct mem_data_st {
- /*
- * sorted with
- * STORE_ATTR_INFO_compare().
- */
- STACK_OF(MEM_OBJECT_DATA) *data;
- /*
- * Currently unused, but can
- * be used to add attributes
- * from parts of the data.
- */
- unsigned int compute_components:1;
-};
-
-DECLARE_STACK_OF(STORE_ATTR_INFO)
-struct mem_ctx_st {
- /* The type we're searching for */
- int type;
- /*
- * Sets of
- * attributes to search for. Each
- * element is a STORE_ATTR_INFO.
- */
- STACK_OF(STORE_ATTR_INFO) *search_attributes;
- /*
- * which of the search attributes we
- * found a match for, -1 when we still
- * haven't found any
- */
- int search_index;
- /* -1 as long as we're searching for the first */
- int index;
-};
-
-static int mem_init(STORE *s);
-static void mem_clean(STORE *s);
-static STORE_OBJECT *mem_generate(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[]);
-static STORE_OBJECT *mem_get(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[]);
-static int mem_store(STORE *s, STORE_OBJECT_TYPES type, STORE_OBJECT *data,
- OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
-static int mem_modify(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM search_attributes[],
- OPENSSL_ITEM add_attributes[],
- OPENSSL_ITEM modify_attributes[],
- OPENSSL_ITEM delete_attributes[],
- OPENSSL_ITEM parameters[]);
-static int mem_delete(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
-static void *mem_list_start(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[]);
-static STORE_OBJECT *mem_list_next(STORE *s, void *handle);
-static int mem_list_end(STORE *s, void *handle);
-static int mem_list_endp(STORE *s, void *handle);
-static int mem_lock(STORE *s, OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[]);
-static int mem_unlock(STORE *s, OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[]);
-static int mem_ctrl(STORE *s, int cmd, long l, void *p, void (*f) (void));
-
-static STORE_METHOD store_memory = {
- "OpenSSL memory store interface",
- mem_init,
- mem_clean,
- mem_generate,
- mem_get,
- mem_store,
- mem_modify,
- NULL, /* revoke */
- mem_delete,
- mem_list_start,
- mem_list_next,
- mem_list_end,
- mem_list_endp,
- NULL, /* update */
- mem_lock,
- mem_unlock,
- mem_ctrl
-};
-
-const STORE_METHOD *STORE_Memory(void)
-{
- return &store_memory;
-}
-
-static int mem_init(STORE *s)
-{
- return 1;
-}
-
-static void mem_clean(STORE *s)
-{
- return;
-}
-
-static STORE_OBJECT *mem_generate(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[])
-{
- STOREerr(STORE_F_MEM_GENERATE, STORE_R_NOT_IMPLEMENTED);
- return 0;
-}
-
-static STORE_OBJECT *mem_get(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[])
-{
- void *context = mem_list_start(s, type, attributes, parameters);
-
- if (context) {
- STORE_OBJECT *object = mem_list_next(s, context);
-
- if (mem_list_end(s, context))
- return object;
- }
- return NULL;
-}
-
-static int mem_store(STORE *s, STORE_OBJECT_TYPES type,
- STORE_OBJECT *data, OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[])
-{
- STOREerr(STORE_F_MEM_STORE, STORE_R_NOT_IMPLEMENTED);
- return 0;
-}
-
-static int mem_modify(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM search_attributes[],
- OPENSSL_ITEM add_attributes[],
- OPENSSL_ITEM modify_attributes[],
- OPENSSL_ITEM delete_attributes[],
- OPENSSL_ITEM parameters[])
-{
- STOREerr(STORE_F_MEM_MODIFY, STORE_R_NOT_IMPLEMENTED);
- return 0;
-}
-
-static int mem_delete(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[])
-{
- STOREerr(STORE_F_MEM_DELETE, STORE_R_NOT_IMPLEMENTED);
- return 0;
-}
-
-/*
- * The list functions may be the hardest to understand. Basically,
- * mem_list_start compiles a stack of attribute info elements, and puts that
- * stack into the context to be returned. mem_list_next will then find the
- * first matching element in the store, and then walk all the way to the end
- * of the store (since any combination of attribute bits above the starting
- * point may match the searched for bit pattern...).
- */
-static void *mem_list_start(STORE *s, STORE_OBJECT_TYPES type,
- OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[])
-{
- struct mem_ctx_st *context =
- (struct mem_ctx_st *)OPENSSL_malloc(sizeof(struct mem_ctx_st));
- void *attribute_context = NULL;
- STORE_ATTR_INFO *attrs = NULL;
-
- if (!context) {
- STOREerr(STORE_F_MEM_LIST_START, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- memset(context, 0, sizeof(struct mem_ctx_st));
-
- attribute_context = STORE_parse_attrs_start(attributes);
- if (!attribute_context) {
- STOREerr(STORE_F_MEM_LIST_START, ERR_R_STORE_LIB);
- goto err;
- }
-
- while ((attrs = STORE_parse_attrs_next(attribute_context))) {
- if (context->search_attributes == NULL) {
- context->search_attributes =
- sk_STORE_ATTR_INFO_new(STORE_ATTR_INFO_compare);
- if (!context->search_attributes) {
- STOREerr(STORE_F_MEM_LIST_START, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
- sk_STORE_ATTR_INFO_push(context->search_attributes, attrs);
- }
- if (!STORE_parse_attrs_endp(attribute_context))
- goto err;
- STORE_parse_attrs_end(attribute_context);
- context->search_index = -1;
- context->index = -1;
- return context;
- err:
- if (attribute_context)
- STORE_parse_attrs_end(attribute_context);
- mem_list_end(s, context);
- return NULL;
-}
-
-static STORE_OBJECT *mem_list_next(STORE *s, void *handle)
-{
- int i;
- struct mem_ctx_st *context = (struct mem_ctx_st *)handle;
- struct mem_object_data_st key = { 0, 0, 1 };
- struct mem_data_st *store = (struct mem_data_st *)STORE_get_ex_data(s, 1);
- int srch;
- int cres = 0;
-
- if (!context) {
- STOREerr(STORE_F_MEM_LIST_NEXT, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- if (!store) {
- STOREerr(STORE_F_MEM_LIST_NEXT, STORE_R_NO_STORE);
- return NULL;
- }
-
- if (context->search_index == -1) {
- for (i = 0;
- i < sk_STORE_ATTR_INFO_num(context->search_attributes); i++) {
- key.attr_info
- = sk_STORE_ATTR_INFO_value(context->search_attributes, i);
- srch = sk_MEM_OBJECT_DATA_find_ex(store->data, &key);
-
- if (srch >= 0) {
- context->search_index = srch;
- break;
- }
- }
- }
- if (context->search_index < 0)
- return NULL;
-
- key.attr_info =
- sk_STORE_ATTR_INFO_value(context->search_attributes,
- context->search_index);
- for (srch = context->search_index;
- srch < sk_MEM_OBJECT_DATA_num(store->data)
- && STORE_ATTR_INFO_in_range(key.attr_info,
- sk_MEM_OBJECT_DATA_value(store->data,
- srch)->attr_info)
- && !(cres =
- STORE_ATTR_INFO_in_ex(key.attr_info,
- sk_MEM_OBJECT_DATA_value(store->data,
- srch)->attr_info));
- srch++) ;
-
- context->search_index = srch;
- if (cres)
- return (sk_MEM_OBJECT_DATA_value(store->data, srch))->object;
- return NULL;
-}
-
-static int mem_list_end(STORE *s, void *handle)
-{
- struct mem_ctx_st *context = (struct mem_ctx_st *)handle;
-
- if (!context) {
- STOREerr(STORE_F_MEM_LIST_END, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- if (context && context->search_attributes)
- sk_STORE_ATTR_INFO_free(context->search_attributes);
- if (context)
- OPENSSL_free(context);
- return 1;
-}
-
-static int mem_list_endp(STORE *s, void *handle)
-{
- struct mem_ctx_st *context = (struct mem_ctx_st *)handle;
-
- if (!context
- || context->search_index
- == sk_STORE_ATTR_INFO_num(context->search_attributes))
- return 1;
- return 0;
-}
-
-static int mem_lock(STORE *s, OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[])
-{
- return 1;
-}
-
-static int mem_unlock(STORE *s, OPENSSL_ITEM attributes[],
- OPENSSL_ITEM parameters[])
-{
- return 1;
-}
-
-static int mem_ctrl(STORE *s, int cmd, long l, void *p, void (*f) (void))
-{
- return 1;
-}