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-rw-r--r--src/lib/libcrypto/engine/eng_lib.c365
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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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--- a/src/lib/libcrypto/engine/eng_lib.c
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1/* $OpenBSD: eng_lib.c,v 1.14 2018/04/14 07:18:37 tb Exp $ */
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 <string.h>
60
61#include <openssl/err.h>
62#include <openssl/rand.h>
63
64#include "eng_int.h"
65
66/* The "new"/"free" stuff first */
67
68ENGINE *
69ENGINE_new(void)
70{
71 ENGINE *ret;
72
73 if (!OPENSSL_init_crypto(0, NULL))
74 return NULL;
75
76 ret = malloc(sizeof(ENGINE));
77 if (ret == NULL) {
78 ENGINEerror(ERR_R_MALLOC_FAILURE);
79 return NULL;
80 }
81 memset(ret, 0, sizeof(ENGINE));
82 ret->struct_ref = 1;
83 engine_ref_debug(ret, 0, 1)
84 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ENGINE, ret, &ret->ex_data);
85 return ret;
86}
87
88/* Placed here (close proximity to ENGINE_new) so that modifications to the
89 * elements of the ENGINE structure are more likely to be caught and changed
90 * here. */
91void
92engine_set_all_null(ENGINE *e)
93{
94 e->id = NULL;
95 e->name = NULL;
96 e->rsa_meth = NULL;
97 e->dsa_meth = NULL;
98 e->dh_meth = NULL;
99 e->rand_meth = NULL;
100 e->store_meth = NULL;
101 e->ciphers = NULL;
102 e->digests = NULL;
103 e->destroy = NULL;
104 e->init = NULL;
105 e->finish = NULL;
106 e->ctrl = NULL;
107 e->load_privkey = NULL;
108 e->load_pubkey = NULL;
109 e->cmd_defns = NULL;
110 e->flags = 0;
111}
112
113int
114engine_free_util(ENGINE *e, int locked)
115{
116 int i;
117
118 if (e == NULL)
119 return 1;
120 if (locked)
121 i = CRYPTO_add(&e->struct_ref, -1, CRYPTO_LOCK_ENGINE);
122 else
123 i = --e->struct_ref;
124 engine_ref_debug(e, 0, -1)
125 if (i > 0)
126 return 1;
127
128 /* Free up any dynamically allocated public key methods */
129 engine_pkey_meths_free(e);
130 engine_pkey_asn1_meths_free(e);
131 /* Give the ENGINE a chance to do any structural cleanup corresponding
132 * to allocation it did in its constructor (eg. unload error strings) */
133 if (e->destroy)
134 e->destroy(e);
135 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ENGINE, e, &e->ex_data);
136 free(e);
137 return 1;
138}
139
140int
141ENGINE_free(ENGINE *e)
142{
143 return engine_free_util(e, 1);
144}
145
146/* Cleanup stuff */
147
148/* ENGINE_cleanup() is coded such that anything that does work that will need
149 * cleanup can register a "cleanup" callback here. That way we don't get linker
150 * bloat by referring to all *possible* cleanups, but any linker bloat into code
151 * "X" will cause X's cleanup function to end up here. */
152static STACK_OF(ENGINE_CLEANUP_ITEM) *cleanup_stack = NULL;
153static int
154int_cleanup_check(int create)
155{
156 if (cleanup_stack)
157 return 1;
158 if (!create)
159 return 0;
160 cleanup_stack = sk_ENGINE_CLEANUP_ITEM_new_null();
161 return (cleanup_stack ? 1 : 0);
162}
163
164static ENGINE_CLEANUP_ITEM *
165int_cleanup_item(ENGINE_CLEANUP_CB *cb)
166{
167 ENGINE_CLEANUP_ITEM *item = malloc(sizeof(ENGINE_CLEANUP_ITEM));
168
169 if (!item)
170 return NULL;
171 item->cb = cb;
172 return item;
173}
174
175void
176engine_cleanup_add_first(ENGINE_CLEANUP_CB *cb)
177{
178 ENGINE_CLEANUP_ITEM *item;
179
180 if (!int_cleanup_check(1))
181 return;
182 item = int_cleanup_item(cb);
183 if (item)
184 sk_ENGINE_CLEANUP_ITEM_insert(cleanup_stack, item, 0);
185}
186
187void
188engine_cleanup_add_last(ENGINE_CLEANUP_CB *cb)
189{
190 ENGINE_CLEANUP_ITEM *item;
191
192 if (!int_cleanup_check(1))
193 return;
194 item = int_cleanup_item(cb);
195 if (item)
196 sk_ENGINE_CLEANUP_ITEM_push(cleanup_stack, item);
197}
198/* The API function that performs all cleanup */
199static void
200engine_cleanup_cb_free(ENGINE_CLEANUP_ITEM *item)
201{
202 (*(item->cb))();
203 free(item);
204}
205
206void
207ENGINE_cleanup(void)
208{
209 if (int_cleanup_check(0)) {
210 sk_ENGINE_CLEANUP_ITEM_pop_free(cleanup_stack,
211 engine_cleanup_cb_free);
212 cleanup_stack = NULL;
213 }
214 /* FIXME: This should be handled (somehow) through RAND, eg. by it
215 * registering a cleanup callback. */
216 RAND_set_rand_method(NULL);
217}
218
219/* Now the "ex_data" support */
220
221int
222ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
223 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
224{
225 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ENGINE, argl, argp,
226 new_func, dup_func, free_func);
227}
228
229int
230ENGINE_set_ex_data(ENGINE *e, int idx, void *arg)
231{
232 return (CRYPTO_set_ex_data(&e->ex_data, idx, arg));
233}
234
235void *
236ENGINE_get_ex_data(const ENGINE *e, int idx)
237{
238 return (CRYPTO_get_ex_data(&e->ex_data, idx));
239}
240
241/* Functions to get/set an ENGINE's elements - mainly to avoid exposing the
242 * ENGINE structure itself. */
243
244int
245ENGINE_set_id(ENGINE *e, const char *id)
246{
247 if (id == NULL) {
248 ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);
249 return 0;
250 }
251 e->id = id;
252 return 1;
253}
254
255int
256ENGINE_set_name(ENGINE *e, const char *name)
257{
258 if (name == NULL) {
259 ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);
260 return 0;
261 }
262 e->name = name;
263 return 1;
264}
265
266int
267ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f)
268{
269 e->destroy = destroy_f;
270 return 1;
271}
272
273int
274ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f)
275{
276 e->init = init_f;
277 return 1;
278}
279
280int
281ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f)
282{
283 e->finish = finish_f;
284 return 1;
285}
286
287int
288ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f)
289{
290 e->ctrl = ctrl_f;
291 return 1;
292}
293
294int
295ENGINE_set_flags(ENGINE *e, int flags)
296{
297 e->flags = flags;
298 return 1;
299}
300
301int
302ENGINE_set_cmd_defns(ENGINE *e, const ENGINE_CMD_DEFN *defns)
303{
304 e->cmd_defns = defns;
305 return 1;
306}
307
308const char *
309ENGINE_get_id(const ENGINE *e)
310{
311 return e->id;
312}
313
314const char *
315ENGINE_get_name(const ENGINE *e)
316{
317 return e->name;
318}
319
320ENGINE_GEN_INT_FUNC_PTR
321ENGINE_get_destroy_function(const ENGINE *e)
322{
323 return e->destroy;
324}
325
326ENGINE_GEN_INT_FUNC_PTR
327ENGINE_get_init_function(const ENGINE *e)
328{
329 return e->init;
330}
331
332ENGINE_GEN_INT_FUNC_PTR
333ENGINE_get_finish_function(const ENGINE *e)
334{
335 return e->finish;
336}
337
338ENGINE_CTRL_FUNC_PTR
339ENGINE_get_ctrl_function(const ENGINE *e)
340{
341 return e->ctrl;
342}
343
344int
345ENGINE_get_flags(const ENGINE *e)
346{
347 return e->flags;
348}
349
350const ENGINE_CMD_DEFN *
351ENGINE_get_cmd_defns(const ENGINE *e)
352{
353 return e->cmd_defns;
354}
355
356/* eng_lib.o is pretty much linked into anything that touches ENGINE already, so
357 * put the "static_state" hack here. */
358
359static int internal_static_hack = 0;
360
361void *
362ENGINE_get_static_state(void)
363{
364 return &internal_static_hack;
365}
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