GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/crypto/../../libssl/src/crypto/engine/eng_cnf.c Lines: 3 91 3.3 %
Date: 2016-12-06 Branches: 0 72 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: eng_cnf.c,v 1.13 2015/02/11 03:19:37 doug Exp $ */
2
/* Written by Stephen Henson (steve@openssl.org) for the OpenSSL
3
 * project 2001.
4
 */
5
/* ====================================================================
6
 * Copyright (c) 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
63
#include "eng_int.h"
64
#include <openssl/conf.h>
65
66
/* #define ENGINE_CONF_DEBUG */
67
68
/* ENGINE config module */
69
70
static char *
71
skip_dot(char *name)
72
{
73
	char *p;
74
75
	p = strchr(name, '.');
76
	if (p)
77
		return p + 1;
78
	return name;
79
}
80
81
static STACK_OF(ENGINE) *initialized_engines = NULL;
82
83
static int
84
int_engine_init(ENGINE *e)
85
{
86
	if (!ENGINE_init(e))
87
		return 0;
88
	if (!initialized_engines)
89
		initialized_engines = sk_ENGINE_new_null();
90
	if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e)) {
91
		ENGINE_finish(e);
92
		return 0;
93
	}
94
	return 1;
95
}
96
97
98
static int
99
int_engine_configure(char *name, char *value, const CONF *cnf)
100
{
101
	int i;
102
	int ret = 0;
103
	long do_init = -1;
104
	STACK_OF(CONF_VALUE) *ecmds;
105
	CONF_VALUE *ecmd = NULL;
106
	char *ctrlname, *ctrlvalue;
107
	ENGINE *e = NULL;
108
	int soft = 0;
109
110
	name = skip_dot(name);
111
#ifdef ENGINE_CONF_DEBUG
112
	fprintf(stderr, "Configuring engine %s\n", name);
113
#endif
114
	/* Value is a section containing ENGINE commands */
115
	ecmds = NCONF_get_section(cnf, value);
116
117
	if (!ecmds) {
118
		ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE,
119
		    ENGINE_R_ENGINE_SECTION_ERROR);
120
		return 0;
121
	}
122
123
	for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
124
		ecmd = sk_CONF_VALUE_value(ecmds, i);
125
		ctrlname = skip_dot(ecmd->name);
126
		ctrlvalue = ecmd->value;
127
#ifdef ENGINE_CONF_DEBUG
128
		fprintf(stderr, "ENGINE conf: doing ctrl(%s,%s)\n",
129
		    ctrlname, ctrlvalue);
130
#endif
131
132
		/* First handle some special pseudo ctrls */
133
134
		/* Override engine name to use */
135
		if (!strcmp(ctrlname, "engine_id"))
136
			name = ctrlvalue;
137
		else if (!strcmp(ctrlname, "soft_load"))
138
			soft = 1;
139
		/* Load a dynamic ENGINE */
140
		else if (!strcmp(ctrlname, "dynamic_path")) {
141
			e = ENGINE_by_id("dynamic");
142
			if (!e)
143
				goto err;
144
			if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0))
145
				goto err;
146
			if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0))
147
				goto err;
148
			if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
149
				goto err;
150
		}
151
		/* ... add other pseudos here ... */
152
		else {
153
			/* At this point we need an ENGINE structural reference
154
			 * if we don't already have one.
155
			 */
156
			if (!e) {
157
				e = ENGINE_by_id(name);
158
				if (!e && soft) {
159
					ERR_clear_error();
160
					return 1;
161
				}
162
				if (!e)
163
					goto err;
164
			}
165
			/* Allow "EMPTY" to mean no value: this allows a valid
166
			 * "value" to be passed to ctrls of type NO_INPUT
167
		 	 */
168
			if (!strcmp(ctrlvalue, "EMPTY"))
169
				ctrlvalue = NULL;
170
			if (!strcmp(ctrlname, "init")) {
171
				if (!NCONF_get_number_e(cnf, value, "init",
172
				    &do_init))
173
					goto err;
174
				if (do_init == 1) {
175
					if (!int_engine_init(e))
176
						goto err;
177
				} else if (do_init != 0) {
178
					ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE,
179
					    ENGINE_R_INVALID_INIT_VALUE);
180
					goto err;
181
				}
182
			}
183
			else if (!strcmp(ctrlname, "default_algorithms")) {
184
				if (!ENGINE_set_default_string(e, ctrlvalue))
185
					goto err;
186
			} else if (!ENGINE_ctrl_cmd_string(e,
187
				ctrlname, ctrlvalue, 0))
188
				goto err;
189
		}
190
	}
191
	if (e && (do_init == -1) && !int_engine_init(e)) {
192
		ecmd = NULL;
193
		goto err;
194
	}
195
	ret = 1;
196
197
err:
198
	if (ret != 1) {
199
		ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE,
200
		    ENGINE_R_ENGINE_CONFIGURATION_ERROR);
201
		if (ecmd)
202
			ERR_asprintf_error_data(
203
			    "section=%s, name=%s, value=%s",
204
			    ecmd->section, ecmd->name, ecmd->value);
205
	}
206
	if (e)
207
		ENGINE_free(e);
208
	return ret;
209
}
210
211
212
static int
213
int_engine_module_init(CONF_IMODULE *md, const CONF *cnf)
214
{
215
	STACK_OF(CONF_VALUE) *elist;
216
	CONF_VALUE *cval;
217
	int i;
218
219
#ifdef ENGINE_CONF_DEBUG
220
	fprintf(stderr, "Called engine module: name %s, value %s\n",
221
	    CONF_imodule_get_name(md), CONF_imodule_get_value(md));
222
#endif
223
	/* Value is a section containing ENGINEs to configure */
224
	elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
225
226
	if (!elist) {
227
		ENGINEerr(ENGINE_F_INT_ENGINE_MODULE_INIT,
228
		    ENGINE_R_ENGINES_SECTION_ERROR);
229
		return 0;
230
	}
231
232
	for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
233
		cval = sk_CONF_VALUE_value(elist, i);
234
		if (!int_engine_configure(cval->name, cval->value, cnf))
235
			return 0;
236
	}
237
238
	return 1;
239
}
240
241
static void
242
int_engine_module_finish(CONF_IMODULE *md)
243
{
244
	ENGINE *e;
245
246
	while ((e = sk_ENGINE_pop(initialized_engines)))
247
		ENGINE_finish(e);
248
	sk_ENGINE_free(initialized_engines);
249
	initialized_engines = NULL;
250
}
251
252
void
253
ENGINE_add_conf_module(void)
254
9
{
255
9
	CONF_module_add("engines", int_engine_module_init,
256
	    int_engine_module_finish);
257
9
}