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diff --git a/src/lib/libcrypto/engine/eng_lib.c b/src/lib/libcrypto/engine/eng_lib.c
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1/* crypto/engine/eng_lib.c */
2/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
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
18 * distribution.
19 *
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/)"
24 *
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 * licensing@OpenSSL.org.
29 *
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.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
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 * ====================================================================
52 *
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).
56 *
57 */
58
59#include <openssl/crypto.h>
60#include "cryptlib.h"
61#include "eng_int.h"
62#include <openssl/rand.h> /* FIXME: This shouldn't be needed */
63#include <openssl/engine.h>
64
65/* The "new"/"free" stuff first */
66
67ENGINE *ENGINE_new(void)
68 {
69 ENGINE *ret;
70
71 ret = (ENGINE *)OPENSSL_malloc(sizeof(ENGINE));
72 if(ret == NULL)
73 {
74 ENGINEerr(ENGINE_F_ENGINE_NEW, ERR_R_MALLOC_FAILURE);
75 return NULL;
76 }
77 memset(ret, 0, sizeof(ENGINE));
78 ret->struct_ref = 1;
79 engine_ref_debug(ret, 0, 1)
80 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ENGINE, ret, &ret->ex_data);
81 return ret;
82 }
83
84/* Placed here (close proximity to ENGINE_new) so that modifications to the
85 * elements of the ENGINE structure are more likely to be caught and changed
86 * here. */
87void engine_set_all_null(ENGINE *e)
88 {
89 e->id = NULL;
90 e->name = NULL;
91 e->rsa_meth = NULL;
92 e->dsa_meth = NULL;
93 e->dh_meth = NULL;
94 e->rand_meth = NULL;
95 e->ciphers = NULL;
96 e->digests = NULL;
97 e->destroy = NULL;
98 e->init = NULL;
99 e->finish = NULL;
100 e->ctrl = NULL;
101 e->load_privkey = NULL;
102 e->load_pubkey = NULL;
103 e->cmd_defns = NULL;
104 e->flags = 0;
105 }
106
107int engine_free_util(ENGINE *e, int locked)
108 {
109 int i;
110
111 if(e == NULL)
112 {
113 ENGINEerr(ENGINE_F_ENGINE_FREE,
114 ERR_R_PASSED_NULL_PARAMETER);
115 return 0;
116 }
117 if(locked)
118 i = CRYPTO_add(&e->struct_ref,-1,CRYPTO_LOCK_ENGINE);
119 else
120 i = --e->struct_ref;
121 engine_ref_debug(e, 0, -1)
122 if (i > 0) return 1;
123#ifdef REF_CHECK
124 if (i < 0)
125 {
126 fprintf(stderr,"ENGINE_free, bad structural reference count\n");
127 abort();
128 }
129#endif
130 /* Give the ENGINE a chance to do any structural cleanup corresponding
131 * to allocation it did in its constructor (eg. unload error strings) */
132 if(e->destroy)
133 e->destroy(e);
134 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ENGINE, e, &e->ex_data);
135 OPENSSL_free(e);
136 return 1;
137 }
138
139int ENGINE_free(ENGINE *e)
140 {
141 return engine_free_util(e, 1);
142 }
143
144/* Cleanup stuff */
145
146/* ENGINE_cleanup() is coded such that anything that does work that will need
147 * cleanup can register a "cleanup" callback here. That way we don't get linker
148 * bloat by referring to all *possible* cleanups, but any linker bloat into code
149 * "X" will cause X's cleanup function to end up here. */
150static STACK_OF(ENGINE_CLEANUP_ITEM) *cleanup_stack = NULL;
151static int int_cleanup_check(int create)
152 {
153 if(cleanup_stack) return 1;
154 if(!create) return 0;
155 cleanup_stack = sk_ENGINE_CLEANUP_ITEM_new_null();
156 return (cleanup_stack ? 1 : 0);
157 }
158static ENGINE_CLEANUP_ITEM *int_cleanup_item(ENGINE_CLEANUP_CB *cb)
159 {
160 ENGINE_CLEANUP_ITEM *item = OPENSSL_malloc(sizeof(
161 ENGINE_CLEANUP_ITEM));
162 if(!item) return NULL;
163 item->cb = cb;
164 return item;
165 }
166void engine_cleanup_add_first(ENGINE_CLEANUP_CB *cb)
167 {
168 ENGINE_CLEANUP_ITEM *item;
169 if(!int_cleanup_check(1)) return;
170 item = int_cleanup_item(cb);
171 if(item)
172 sk_ENGINE_CLEANUP_ITEM_insert(cleanup_stack, item, 0);
173 }
174void engine_cleanup_add_last(ENGINE_CLEANUP_CB *cb)
175 {
176 ENGINE_CLEANUP_ITEM *item;
177 if(!int_cleanup_check(1)) return;
178 item = int_cleanup_item(cb);
179 if(item)
180 sk_ENGINE_CLEANUP_ITEM_push(cleanup_stack, item);
181 }
182/* The API function that performs all cleanup */
183static void engine_cleanup_cb_free(ENGINE_CLEANUP_ITEM *item)
184 {
185 (*(item->cb))();
186 OPENSSL_free(item);
187 }
188void ENGINE_cleanup(void)
189 {
190 if(int_cleanup_check(0))
191 {
192 sk_ENGINE_CLEANUP_ITEM_pop_free(cleanup_stack,
193 engine_cleanup_cb_free);
194 cleanup_stack = NULL;
195 }
196 /* FIXME: This should be handled (somehow) through RAND, eg. by it
197 * registering a cleanup callback. */
198 RAND_set_rand_method(NULL);
199 }
200
201/* Now the "ex_data" support */
202
203int ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
204 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
205 {
206 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ENGINE, argl, argp,
207 new_func, dup_func, free_func);
208 }
209
210int ENGINE_set_ex_data(ENGINE *e, int idx, void *arg)
211 {
212 return(CRYPTO_set_ex_data(&e->ex_data, idx, arg));
213 }
214
215void *ENGINE_get_ex_data(const ENGINE *e, int idx)
216 {
217 return(CRYPTO_get_ex_data(&e->ex_data, idx));
218 }
219
220/* Functions to get/set an ENGINE's elements - mainly to avoid exposing the
221 * ENGINE structure itself. */
222
223int ENGINE_set_id(ENGINE *e, const char *id)
224 {
225 if(id == NULL)
226 {
227 ENGINEerr(ENGINE_F_ENGINE_SET_ID,
228 ERR_R_PASSED_NULL_PARAMETER);
229 return 0;
230 }
231 e->id = id;
232 return 1;
233 }
234
235int ENGINE_set_name(ENGINE *e, const char *name)
236 {
237 if(name == NULL)
238 {
239 ENGINEerr(ENGINE_F_ENGINE_SET_NAME,
240 ERR_R_PASSED_NULL_PARAMETER);
241 return 0;
242 }
243 e->name = name;
244 return 1;
245 }
246
247int ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f)
248 {
249 e->destroy = destroy_f;
250 return 1;
251 }
252
253int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f)
254 {
255 e->init = init_f;
256 return 1;
257 }
258
259int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f)
260 {
261 e->finish = finish_f;
262 return 1;
263 }
264
265int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f)
266 {
267 e->ctrl = ctrl_f;
268 return 1;
269 }
270
271int ENGINE_set_flags(ENGINE *e, int flags)
272 {
273 e->flags = flags;
274 return 1;
275 }
276
277int ENGINE_set_cmd_defns(ENGINE *e, const ENGINE_CMD_DEFN *defns)
278 {
279 e->cmd_defns = defns;
280 return 1;
281 }
282
283const char *ENGINE_get_id(const ENGINE *e)
284 {
285 return e->id;
286 }
287
288const char *ENGINE_get_name(const ENGINE *e)
289 {
290 return e->name;
291 }
292
293ENGINE_GEN_INT_FUNC_PTR ENGINE_get_destroy_function(const ENGINE *e)
294 {
295 return e->destroy;
296 }
297
298ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(const ENGINE *e)
299 {
300 return e->init;
301 }
302
303ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(const ENGINE *e)
304 {
305 return e->finish;
306 }
307
308ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(const ENGINE *e)
309 {
310 return e->ctrl;
311 }
312
313int ENGINE_get_flags(const ENGINE *e)
314 {
315 return e->flags;
316 }
317
318const ENGINE_CMD_DEFN *ENGINE_get_cmd_defns(const ENGINE *e)
319 {
320 return e->cmd_defns;
321 }
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