/src/libressl/crypto/engine/eng_init.c

Source (jump to first uncovered line)
/* $OpenBSD: eng_init.c,v 1.9 2018/04/14 07:09:21 tb Exp $ */
/* ====================================================================
 * Copyright (c) 1999-2001 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
 *    licensing@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 <openssl/err.h>

#include "eng_int.h"

/* Initialise a engine type for use (or up its functional reference count
 * if it's already in use). This version is only used internally. */
int
engine_unlocked_init(ENGINE *e)
{
  int to_return = 1;

  if ((e->funct_ref == 0) && e->init)
    /* This is the first functional reference and the engine
     * requires initialisation so we do it now. */
    to_return = e->init(e);
  if (to_return) {
    /* OK, we return a functional reference which is also a
     * structural reference. */
    e->struct_ref++;
    e->funct_ref++;
    engine_ref_debug(e, 0, 1)
    engine_ref_debug(e, 1, 1)
  }
  return to_return;
}

/* Free a functional reference to a engine type. This version is only used
 * internally. */
int
engine_unlocked_finish(ENGINE *e, int unlock_for_handlers)
{
  int to_return = 1;

  /* Reduce the functional reference count here so if it's the terminating
   * case, we can release the lock safely and call the finish() handler
   * without risk of a race. We get a race if we leave the count until
   * after and something else is calling "finish" at the same time -
   * there's a chance that both threads will together take the count from
   * 2 to 0 without either calling finish(). */
  e->funct_ref--;
  engine_ref_debug(e, 1, -1);
  if ((e->funct_ref == 0) && e->finish) {
    if (unlock_for_handlers)
      CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
    to_return = e->finish(e);
    if (unlock_for_handlers)
      CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
    if (!to_return)
      return 0;
  }

  /* Release the structural reference too */
  if (!engine_free_util(e, 0)) {
    ENGINEerror(ENGINE_R_FINISH_FAILED);
    return 0;
  }
  return to_return;
}

/* The API (locked) version of "init" */
int
ENGINE_init(ENGINE *e)
{
  int ret;

  if (e == NULL) {
    ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);
    return 0;
  }
  CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
  ret = engine_unlocked_init(e);
  CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
  return ret;
}

/* The API (locked) version of "finish" */
int
ENGINE_finish(ENGINE *e)
{
  int to_return = 1;

  if (e == NULL)
    return 1;
  CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
  to_return = engine_unlocked_finish(e, 1);
  CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
  if (!to_return) {
    ENGINEerror(ENGINE_R_FINISH_FAILED);
    return 0;
  }
  return to_return;
}

Line	Count	Source (jump to first uncovered line)
1		/* $OpenBSD: eng_init.c,v 1.9 2018/04/14 07:09:21 tb Exp $ */
2		/* ====================================================================
3		* Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
4		*
5		* Redistribution and use in source and binary forms, with or without
6		* modification, are permitted provided that the following conditions
7		* are met:
8		*
9		* 1. Redistributions of source code must retain the above copyright
10		* notice, this list of conditions and the following disclaimer.
11		*
12		* 2. Redistributions in binary form must reproduce the above copyright
13		* notice, this list of conditions and the following disclaimer in
14		* the documentation and/or other materials provided with the
15		* distribution.
16		*
17		* 3. All advertising materials mentioning features or use of this
18		* software must display the following acknowledgment:
19		* "This product includes software developed by the OpenSSL Project
20		* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21		*
22		* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23		* endorse or promote products derived from this software without
24		* prior written permission. For written permission, please contact
25		* licensing@OpenSSL.org.
26		*
27		* 5. Products derived from this software may not be called "OpenSSL"
28		* nor may "OpenSSL" appear in their names without prior written
29		* permission of the OpenSSL Project.
30		*
31		* 6. Redistributions of any form whatsoever must retain the following
32		* acknowledgment:
33		* "This product includes software developed by the OpenSSL Project
34		* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35		*
36		* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37		* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39		* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40		* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42		* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43		* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45		* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46		* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47		* OF THE POSSIBILITY OF SUCH DAMAGE.
48		* ====================================================================
49		*
50		* This product includes cryptographic software written by Eric Young
51		* (eay@cryptsoft.com). This product includes software written by Tim
52		* Hudson (tjh@cryptsoft.com).
53		*
54		*/
55
56		#include <openssl/err.h>
57
58		#include "eng_int.h"
59
60		/* Initialise a engine type for use (or up its functional reference count
61		* if it's already in use). This version is only used internally. */
62		int
63		engine_unlocked_init(ENGINE *e)
64	0	{
65	0	int to_return = 1;
66
67	0	if ((e->funct_ref == 0) && e->init)
68		/* This is the first functional reference and the engine
69		* requires initialisation so we do it now. */
70	0	to_return = e->init(e);
71	0	if (to_return) {
72		/* OK, we return a functional reference which is also a
73		* structural reference. */
74	0	e->struct_ref++;
75	0	e->funct_ref++;
76	0	engine_ref_debug(e, 0, 1)
77	0	engine_ref_debug(e, 1, 1)
78	0	}
79	0	return to_return;
80	0	}
81
82		/* Free a functional reference to a engine type. This version is only used
83		* internally. */
84		int
85		engine_unlocked_finish(ENGINE *e, int unlock_for_handlers)
86	0	{
87	0	int to_return = 1;
88
89		/* Reduce the functional reference count here so if it's the terminating
90		* case, we can release the lock safely and call the finish() handler
91		* without risk of a race. We get a race if we leave the count until
92		* after and something else is calling "finish" at the same time -
93		* there's a chance that both threads will together take the count from
94		* 2 to 0 without either calling finish(). */
95	0	e->funct_ref--;
96	0	engine_ref_debug(e, 1, -1);
97	0	if ((e->funct_ref == 0) && e->finish) {
98	0	if (unlock_for_handlers)
99	0	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
100	0	to_return = e->finish(e);
101	0	if (unlock_for_handlers)
102	0	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
103	0	if (!to_return)
104	0	return 0;
105	0	}
106
107		/* Release the structural reference too */
108	0	if (!engine_free_util(e, 0)) {
109	0	ENGINEerror(ENGINE_R_FINISH_FAILED);
110	0	return 0;
111	0	}
112	0	return to_return;
113	0	}
114
115		/* The API (locked) version of "init" */
116		int
117		ENGINE_init(ENGINE *e)
118	0	{
119	0	int ret;
120
121	0	if (e == NULL) {
122	0	ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);
123	0	return 0;
124	0	}
125	0	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
126	0	ret = engine_unlocked_init(e);
127	0	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
128	0	return ret;
129	0	}
130
131		/* The API (locked) version of "finish" */
132		int
133		ENGINE_finish(ENGINE *e)
134	10.6k	{
135	10.6k	int to_return = 1;
136
137	10.6k	if (e == NULL)
138	10.6k	return 1;
139	0	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
140	0	to_return = engine_unlocked_finish(e, 1);
141	0	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
142	0	if (!to_return) {
143	0	ENGINEerror(ENGINE_R_FINISH_FAILED);
144	0	return 0;
145	0	}
146	0	return to_return;
147	0	}

Coverage Report

Created: 2022-08-24 06:30