2 * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project
5 /* ====================================================================
6 * Copyright (c) 2003 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
60 #include <openssl/err.h>
64 * The memory store is currently highly experimental. It's meant to become a
65 * base store used by other stores for internal caching (for full caching
66 * support, aging needs to be added).
68 * The database use is meant to support as much attribute association as
69 * possible, while providing for as small search ranges as possible. This is
70 * currently provided for by sorting the entries by numbers that are composed
71 * of bits set at the positions indicated by attribute type codes. This
72 * provides for ranges determined by the highest attribute type code value.
73 * A better idea might be to sort by values computed from the range of
74 * attributes associated with the object (basically, the difference between
75 * the highest and lowest attribute type code) and it's distance from a base
76 * (basically, the lowest associated attribute type code).
79 typedef struct mem_object_data_st
{
81 STORE_ATTR_INFO
*attr_info
;
85 DEFINE_STACK_OF(MEM_OBJECT_DATA
)
89 * STORE_ATTR_INFO_compare().
91 STACK_OF(MEM_OBJECT_DATA
) *data
;
93 * Currently unused, but can
94 * be used to add attributes
95 * from parts of the data.
97 unsigned int compute_components
:1;
100 DEFINE_STACK_OF(STORE_ATTR_INFO
)
102 /* The type we're searching for */
106 * attributes to search for. Each
107 * element is a STORE_ATTR_INFO.
109 STACK_OF(STORE_ATTR_INFO
) *search_attributes
;
111 * which of the search attributes we
112 * found a match for, -1 when we still
116 /* -1 as long as we're searching for the first */
120 static int mem_init(STORE
*s
);
121 static void mem_clean(STORE
*s
);
122 static STORE_OBJECT
*mem_generate(STORE
*s
, STORE_OBJECT_TYPES type
,
123 OPENSSL_ITEM attributes
[],
124 OPENSSL_ITEM parameters
[]);
125 static STORE_OBJECT
*mem_get(STORE
*s
, STORE_OBJECT_TYPES type
,
126 OPENSSL_ITEM attributes
[],
127 OPENSSL_ITEM parameters
[]);
128 static int mem_store(STORE
*s
, STORE_OBJECT_TYPES type
, STORE_OBJECT
*data
,
129 OPENSSL_ITEM attributes
[], OPENSSL_ITEM parameters
[]);
130 static int mem_modify(STORE
*s
, STORE_OBJECT_TYPES type
,
131 OPENSSL_ITEM search_attributes
[],
132 OPENSSL_ITEM add_attributes
[],
133 OPENSSL_ITEM modify_attributes
[],
134 OPENSSL_ITEM delete_attributes
[],
135 OPENSSL_ITEM parameters
[]);
136 static int mem_delete(STORE
*s
, STORE_OBJECT_TYPES type
,
137 OPENSSL_ITEM attributes
[], OPENSSL_ITEM parameters
[]);
138 static void *mem_list_start(STORE
*s
, STORE_OBJECT_TYPES type
,
139 OPENSSL_ITEM attributes
[],
140 OPENSSL_ITEM parameters
[]);
141 static STORE_OBJECT
*mem_list_next(STORE
*s
, void *handle
);
142 static int mem_list_end(STORE
*s
, void *handle
);
143 static int mem_list_endp(STORE
*s
, void *handle
);
144 static int mem_lock(STORE
*s
, OPENSSL_ITEM attributes
[],
145 OPENSSL_ITEM parameters
[]);
146 static int mem_unlock(STORE
*s
, OPENSSL_ITEM attributes
[],
147 OPENSSL_ITEM parameters
[]);
148 static int mem_ctrl(STORE
*s
, int cmd
, long l
, void *p
, void (*f
) (void));
150 static STORE_METHOD store_memory
= {
151 "OpenSSL memory store interface",
170 const STORE_METHOD
*STORE_Memory(void)
172 return &store_memory
;
175 static int mem_init(STORE
*s
)
180 static void mem_clean(STORE
*s
)
185 static STORE_OBJECT
*mem_generate(STORE
*s
, STORE_OBJECT_TYPES type
,
186 OPENSSL_ITEM attributes
[],
187 OPENSSL_ITEM parameters
[])
189 STOREerr(STORE_F_MEM_GENERATE
, STORE_R_NOT_IMPLEMENTED
);
193 static STORE_OBJECT
*mem_get(STORE
*s
, STORE_OBJECT_TYPES type
,
194 OPENSSL_ITEM attributes
[],
195 OPENSSL_ITEM parameters
[])
197 void *context
= mem_list_start(s
, type
, attributes
, parameters
);
200 STORE_OBJECT
*object
= mem_list_next(s
, context
);
202 if (mem_list_end(s
, context
))
208 static int mem_store(STORE
*s
, STORE_OBJECT_TYPES type
,
209 STORE_OBJECT
*data
, OPENSSL_ITEM attributes
[],
210 OPENSSL_ITEM parameters
[])
212 STOREerr(STORE_F_MEM_STORE
, STORE_R_NOT_IMPLEMENTED
);
216 static int mem_modify(STORE
*s
, STORE_OBJECT_TYPES type
,
217 OPENSSL_ITEM search_attributes
[],
218 OPENSSL_ITEM add_attributes
[],
219 OPENSSL_ITEM modify_attributes
[],
220 OPENSSL_ITEM delete_attributes
[],
221 OPENSSL_ITEM parameters
[])
223 STOREerr(STORE_F_MEM_MODIFY
, STORE_R_NOT_IMPLEMENTED
);
227 static int mem_delete(STORE
*s
, STORE_OBJECT_TYPES type
,
228 OPENSSL_ITEM attributes
[], OPENSSL_ITEM parameters
[])
230 STOREerr(STORE_F_MEM_DELETE
, STORE_R_NOT_IMPLEMENTED
);
235 * The list functions may be the hardest to understand. Basically,
236 * mem_list_start compiles a stack of attribute info elements, and puts that
237 * stack into the context to be returned. mem_list_next will then find the
238 * first matching element in the store, and then walk all the way to the end
239 * of the store (since any combination of attribute bits above the starting
240 * point may match the searched for bit pattern...).
242 static void *mem_list_start(STORE
*s
, STORE_OBJECT_TYPES type
,
243 OPENSSL_ITEM attributes
[],
244 OPENSSL_ITEM parameters
[])
246 struct mem_ctx_st
*context
= OPENSSL_zalloc(sizeof(*context
));
247 void *attribute_context
= NULL
;
248 STORE_ATTR_INFO
*attrs
= NULL
;
250 if (context
== NULL
) {
251 STOREerr(STORE_F_MEM_LIST_START
, ERR_R_MALLOC_FAILURE
);
255 attribute_context
= STORE_parse_attrs_start(attributes
);
256 if (!attribute_context
) {
257 STOREerr(STORE_F_MEM_LIST_START
, ERR_R_STORE_LIB
);
261 while ((attrs
= STORE_parse_attrs_next(attribute_context
))) {
262 if (context
->search_attributes
== NULL
) {
263 context
->search_attributes
=
264 sk_STORE_ATTR_INFO_new(STORE_ATTR_INFO_compare
);
265 if (context
->search_attributes
== NULL
) {
266 STOREerr(STORE_F_MEM_LIST_START
, ERR_R_MALLOC_FAILURE
);
270 sk_STORE_ATTR_INFO_push(context
->search_attributes
, attrs
);
272 if (!STORE_parse_attrs_endp(attribute_context
))
274 STORE_parse_attrs_end(attribute_context
);
275 context
->search_index
= -1;
279 if (attribute_context
)
280 STORE_parse_attrs_end(attribute_context
);
281 mem_list_end(s
, context
);
285 static STORE_OBJECT
*mem_list_next(STORE
*s
, void *handle
)
288 struct mem_ctx_st
*context
= (struct mem_ctx_st
*)handle
;
289 struct mem_object_data_st key
= { 0, 0, 1 };
290 struct mem_data_st
*store
= (struct mem_data_st
*)STORE_get_ex_data(s
, 1);
295 STOREerr(STORE_F_MEM_LIST_NEXT
, ERR_R_PASSED_NULL_PARAMETER
);
299 STOREerr(STORE_F_MEM_LIST_NEXT
, STORE_R_NO_STORE
);
303 if (context
->search_index
== -1) {
305 i
< sk_STORE_ATTR_INFO_num(context
->search_attributes
); i
++) {
307 = sk_STORE_ATTR_INFO_value(context
->search_attributes
, i
);
308 srch
= sk_MEM_OBJECT_DATA_find_ex(store
->data
, &key
);
311 context
->search_index
= srch
;
316 if (context
->search_index
< 0)
320 sk_STORE_ATTR_INFO_value(context
->search_attributes
,
321 context
->search_index
);
322 for (srch
= context
->search_index
;
323 srch
< sk_MEM_OBJECT_DATA_num(store
->data
)
324 && STORE_ATTR_INFO_in_range(key
.attr_info
,
325 sk_MEM_OBJECT_DATA_value(store
->data
,
328 STORE_ATTR_INFO_in_ex(key
.attr_info
,
329 sk_MEM_OBJECT_DATA_value(store
->data
,
333 context
->search_index
= srch
;
335 return (sk_MEM_OBJECT_DATA_value(store
->data
, srch
))->object
;
339 static int mem_list_end(STORE
*s
, void *handle
)
341 struct mem_ctx_st
*context
= (struct mem_ctx_st
*)handle
;
344 STOREerr(STORE_F_MEM_LIST_END
, ERR_R_PASSED_NULL_PARAMETER
);
348 sk_STORE_ATTR_INFO_free(context
->search_attributes
);
349 OPENSSL_free(context
);
353 static int mem_list_endp(STORE
*s
, void *handle
)
355 struct mem_ctx_st
*context
= (struct mem_ctx_st
*)handle
;
358 || context
->search_index
359 == sk_STORE_ATTR_INFO_num(context
->search_attributes
))
364 static int mem_lock(STORE
*s
, OPENSSL_ITEM attributes
[],
365 OPENSSL_ITEM parameters
[])
370 static int mem_unlock(STORE
*s
, OPENSSL_ITEM attributes
[],
371 OPENSSL_ITEM parameters
[])
376 static int mem_ctrl(STORE
*s
, int cmd
, long l
, void *p
, void (*f
) (void))