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  • Committer: Bazaar Package Importer
  • Author(s): Christoph Martin
  • Date: 2004-05-24 17:02:29 UTC
  • Revision ID: james.westby@ubuntu.com-20040524170229-ixlo08bbbly0xied
Tags: upstream-0.9.7d
Import upstream version 0.9.7d

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crypto/engine/eng_cnf.c
 
1
/* eng_cnf.c */
 
2
/* Written by Stephen Henson (shenson@bigfoot.com) 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 <stdio.h>
 
60
#include <openssl/crypto.h>
 
61
#include "cryptlib.h"
 
62
#include <openssl/conf.h>
 
63
#include <openssl/engine.h>
 
64
 
 
65
/* #define ENGINE_CONF_DEBUG */
 
66
 
 
67
/* ENGINE config module */
 
68
 
 
69
static char *skip_dot(char *name)
 
70
        {
 
71
        char *p;
 
72
        p = strchr(name, '.');
 
73
        if (p)
 
74
                return p + 1;
 
75
        return name;
 
76
        }
 
77
 
 
78
static STACK_OF(ENGINE) *initialized_engines = NULL;
 
79
 
 
80
static int int_engine_init(ENGINE *e)
 
81
        {
 
82
        if (!ENGINE_init(e))
 
83
                return 0;
 
84
        if (!initialized_engines)
 
85
                initialized_engines = sk_ENGINE_new_null();
 
86
        if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e))
 
87
                {
 
88
                ENGINE_finish(e);
 
89
                return 0;
 
90
                }
 
91
        return 1;
 
92
        }
 
93
        
 
94
 
 
95
static int int_engine_configure(char *name, char *value, const CONF *cnf)
 
96
        {
 
97
        int i;
 
98
        int ret = 0;
 
99
        long do_init = -1;
 
100
        STACK_OF(CONF_VALUE) *ecmds;
 
101
        CONF_VALUE *ecmd;
 
102
        char *ctrlname, *ctrlvalue;
 
103
        ENGINE *e = NULL;
 
104
        name = skip_dot(name);
 
105
#ifdef ENGINE_CONF_DEBUG
 
106
        fprintf(stderr, "Configuring engine %s\n", name);
 
107
#endif
 
108
        /* Value is a section containing ENGINE commands */
 
109
        ecmds = NCONF_get_section(cnf, value);
 
110
 
 
111
        if (!ecmds)
 
112
                {
 
113
                ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_ENGINE_SECTION_ERROR);
 
114
                return 0;
 
115
                }
 
116
 
 
117
        for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++)
 
118
                {
 
119
                ecmd = sk_CONF_VALUE_value(ecmds, i);
 
120
                ctrlname = skip_dot(ecmd->name);
 
121
                ctrlvalue = ecmd->value;
 
122
#ifdef ENGINE_CONF_DEBUG
 
123
        fprintf(stderr, "ENGINE conf: doing ctrl(%s,%s)\n", ctrlname, ctrlvalue);
 
124
#endif
 
125
 
 
126
                /* First handle some special pseudo ctrls */
 
127
 
 
128
                /* Override engine name to use */
 
129
                if (!strcmp(ctrlname, "engine_id"))
 
130
                        name = ctrlvalue;
 
131
                /* Load a dynamic ENGINE */
 
132
                else if (!strcmp(ctrlname, "dynamic_path"))
 
133
                        {
 
134
                        e = ENGINE_by_id("dynamic");
 
135
                        if (!e)
 
136
                                goto err;
 
137
                        if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0))
 
138
                                goto err;
 
139
                        if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0))
 
140
                                goto err;
 
141
                        if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
 
142
                                goto err;
 
143
                        }
 
144
                /* ... add other pseudos here ... */
 
145
                else
 
146
                        {
 
147
                        /* At this point we need an ENGINE structural reference
 
148
                         * if we don't already have one.
 
149
                         */
 
150
                        if (!e)
 
151
                                {
 
152
                                e = ENGINE_by_id(name);
 
153
                                if (!e)
 
154
                                        return 0;
 
155
                                }
 
156
                        /* Allow "EMPTY" to mean no value: this allows a valid
 
157
                         * "value" to be passed to ctrls of type NO_INPUT
 
158
                         */
 
159
                        if (!strcmp(ctrlvalue, "EMPTY"))
 
160
                                ctrlvalue = NULL;
 
161
                        else if (!strcmp(ctrlname, "init"))
 
162
                                {
 
163
                                if (!NCONF_get_number_e(cnf, value, "init", &do_init))
 
164
                                        goto err;
 
165
                                if (do_init == 1)
 
166
                                        {
 
167
                                        if (!int_engine_init(e))
 
168
                                                goto err;
 
169
                                        }
 
170
                                else if (do_init != 0)
 
171
                                        {
 
172
                                        ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_INVALID_INIT_VALUE);
 
173
                                        goto err;
 
174
                                        }
 
175
                                }
 
176
                        else if (!strcmp(ctrlname, "default_algorithms"))
 
177
                                {
 
178
                                if (!ENGINE_set_default_string(e, ctrlvalue))
 
179
                                        goto err;
 
180
                                }
 
181
                        else if (!ENGINE_ctrl_cmd_string(e,
 
182
                                        ctrlname, ctrlvalue, 0))
 
183
                                return 0;
 
184
                        }
 
185
 
 
186
 
 
187
 
 
188
                }
 
189
        if (e && (do_init == -1) && !int_engine_init(e))
 
190
                goto err;
 
191
        ret = 1;
 
192
        err:
 
193
        if (e)
 
194
                ENGINE_free(e);
 
195
        return ret;
 
196
        }
 
197
 
 
198
 
 
199
static int int_engine_module_init(CONF_IMODULE *md, const CONF *cnf)
 
200
        {
 
201
        STACK_OF(CONF_VALUE) *elist;
 
202
        CONF_VALUE *cval;
 
203
        int i;
 
204
#ifdef ENGINE_CONF_DEBUG
 
205
        fprintf(stderr, "Called engine module: name %s, value %s\n",
 
206
                        CONF_imodule_get_name(md), CONF_imodule_get_value(md));
 
207
#endif
 
208
        /* Value is a section containing ENGINEs to configure */
 
209
        elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
 
210
 
 
211
        if (!elist)
 
212
                {
 
213
                ENGINEerr(ENGINE_F_ENGINE_MODULE_INIT, ENGINE_R_ENGINES_SECTION_ERROR);
 
214
                return 0;
 
215
                }
 
216
 
 
217
        for (i = 0; i < sk_CONF_VALUE_num(elist); i++)
 
218
                {
 
219
                cval = sk_CONF_VALUE_value(elist, i);
 
220
                if (!int_engine_configure(cval->name, cval->value, cnf))
 
221
                        return 0;
 
222
                }
 
223
 
 
224
        return 1;
 
225
        }
 
226
 
 
227
static void int_engine_module_finish(CONF_IMODULE *md)
 
228
        {
 
229
        ENGINE *e;
 
230
        while ((e = sk_ENGINE_pop(initialized_engines)))
 
231
                ENGINE_finish(e);
 
232
        sk_ENGINE_free(initialized_engines);
 
233
        initialized_engines = NULL;
 
234
        }
 
235
        
 
236
 
 
237
void ENGINE_add_conf_module(void)
 
238
        {
 
239
        CONF_module_add("engines",
 
240
                        int_engine_module_init,
 
241
                        int_engine_module_finish);
 
242
        }