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-rw-r--r--src/lib/libcrypto/conf/conf_api.c279
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diff --git a/src/lib/libcrypto/conf/conf_api.c b/src/lib/libcrypto/conf/conf_api.c
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1/* $OpenBSD: conf_api.c,v 1.15 2015/04/11 16:03:21 deraadt Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59/* Part of the code in here was originally in conf.c, which is now removed */
60
61#ifndef CONF_DEBUG
62# undef NDEBUG /* avoid conflicting definitions */
63# define NDEBUG
64#endif
65
66#include <stdlib.h>
67#include <string.h>
68#include <unistd.h>
69#include <openssl/conf.h>
70#include <openssl/conf_api.h>
71
72static void value_free_hash_doall_arg(CONF_VALUE *a,
73 LHASH_OF(CONF_VALUE) *conf);
74static void value_free_stack_doall(CONF_VALUE *a);
75static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE,
76 LHASH_OF(CONF_VALUE))
77static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE)
78
79/* Up until OpenSSL 0.9.5a, this was get_section */
80CONF_VALUE *
81_CONF_get_section(const CONF *conf, const char *section)
82{
83 CONF_VALUE *v, vv;
84
85 if ((conf == NULL) || (section == NULL))
86 return (NULL);
87 vv.name = NULL;
88 vv.section = (char *)section;
89 v = lh_CONF_VALUE_retrieve(conf->data, &vv);
90 return (v);
91}
92
93/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
94STACK_OF(CONF_VALUE) *
95_CONF_get_section_values(const CONF *conf, const char *section)
96{
97 CONF_VALUE *v;
98
99 v = _CONF_get_section(conf, section);
100 if (v != NULL)
101 return ((STACK_OF(CONF_VALUE) *)v->value);
102 else
103 return (NULL);
104}
105
106int
107_CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
108{
109 CONF_VALUE *v = NULL;
110 STACK_OF(CONF_VALUE) *ts;
111
112 ts = (STACK_OF(CONF_VALUE) *)section->value;
113
114 value->section = section->section;
115 if (!sk_CONF_VALUE_push(ts, value)) {
116 return 0;
117 }
118
119 v = lh_CONF_VALUE_insert(conf->data, value);
120 if (v != NULL) {
121 (void)sk_CONF_VALUE_delete_ptr(ts, v);
122 free(v->name);
123 free(v->value);
124 free(v);
125 }
126 return 1;
127}
128
129char *
130_CONF_get_string(const CONF *conf, const char *section, const char *name)
131{
132 CONF_VALUE *v, vv;
133
134 if (name == NULL)
135 return (NULL);
136 if (conf != NULL) {
137 if (section != NULL) {
138 vv.name = (char *)name;
139 vv.section = (char *)section;
140 v = lh_CONF_VALUE_retrieve(conf->data, &vv);
141 if (v != NULL)
142 return (v->value);
143 }
144 vv.section = "default";
145 vv.name = (char *)name;
146 v = lh_CONF_VALUE_retrieve(conf->data, &vv);
147 if (v != NULL)
148 return (v->value);
149 else
150 return (NULL);
151 } else
152 return (NULL);
153}
154
155static unsigned long
156conf_value_hash(const CONF_VALUE *v)
157{
158 return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
159}
160
161static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE)
162
163static int
164conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b)
165{
166 int i;
167
168 if (a->section != b->section) {
169 i = strcmp(a->section, b->section);
170 if (i)
171 return (i);
172 }
173 if ((a->name != NULL) && (b->name != NULL)) {
174 i = strcmp(a->name, b->name);
175 return (i);
176 } else if (a->name == b->name)
177 return (0);
178 else
179 return ((a->name == NULL)?-1 : 1);
180}
181
182static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE)
183
184int
185_CONF_new_data(CONF *conf)
186{
187 if (conf == NULL) {
188 return 0;
189 }
190 if (conf->data == NULL)
191 if ((conf->data = lh_CONF_VALUE_new()) == NULL) {
192 return 0;
193 }
194 return 1;
195}
196
197void
198_CONF_free_data(CONF *conf)
199{
200 if (conf == NULL || conf->data == NULL)
201 return;
202
203 lh_CONF_VALUE_down_load(conf->data) = 0; /* evil thing to make
204 * sure the 'free()' works as
205 * expected */
206 lh_CONF_VALUE_doall_arg(conf->data,
207 LHASH_DOALL_ARG_FN(value_free_hash),
208 LHASH_OF(CONF_VALUE), conf->data);
209
210 /* We now have only 'section' entries in the hash table.
211 * Due to problems with */
212
213 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack));
214 lh_CONF_VALUE_free(conf->data);
215}
216
217static void
218value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf)
219{
220 if (a->name != NULL)
221 (void)lh_CONF_VALUE_delete(conf, a);
222}
223
224static void
225value_free_stack_doall(CONF_VALUE *a)
226{
227 CONF_VALUE *vv;
228 STACK_OF(CONF_VALUE) *sk;
229 int i;
230
231 if (a->name != NULL)
232 return;
233
234 sk = (STACK_OF(CONF_VALUE) *)a->value;
235 for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) {
236 vv = sk_CONF_VALUE_value(sk, i);
237 free(vv->value);
238 free(vv->name);
239 free(vv);
240 }
241 if (sk != NULL)
242 sk_CONF_VALUE_free(sk);
243 free(a->section);
244 free(a);
245}
246
247/* Up until OpenSSL 0.9.5a, this was new_section */
248CONF_VALUE *
249_CONF_new_section(CONF *conf, const char *section)
250{
251 STACK_OF(CONF_VALUE) *sk = NULL;
252 int ok = 0, i;
253 CONF_VALUE *v = NULL, *vv;
254
255 if ((sk = sk_CONF_VALUE_new_null()) == NULL)
256 goto err;
257 if ((v = malloc(sizeof(CONF_VALUE))) == NULL)
258 goto err;
259 i = strlen(section) + 1;
260 if ((v->section = malloc(i)) == NULL)
261 goto err;
262
263 memcpy(v->section, section, i);
264 v->name = NULL;
265 v->value = (char *)sk;
266
267 vv = lh_CONF_VALUE_insert(conf->data, v);
268 OPENSSL_assert(vv == NULL);
269 ok = 1;
270
271err:
272 if (!ok) {
273 if (sk != NULL)
274 sk_CONF_VALUE_free(sk);
275 free(v);
276 v = NULL;
277 }
278 return (v);
279}