1 /* $OpenBSD: conf_api.c,v 1.21 2024/08/31 09:29:03 tb 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
71 #include "conf_local.h"
72
73 static void value_free_hash_doall_arg(CONF_VALUE *a,
74 LHASH_OF(CONF_VALUE) *conf);
75 static void value_free_stack_doall(CONF_VALUE *a);
IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash,CONF_VALUE,LHASH_OF (CONF_VALUE))76 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE,
77 LHASH_OF(CONF_VALUE))
78 static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE)
79
80 /* Up until OpenSSL 0.9.5a, this was get_section */
81 CONF_VALUE *
82 _CONF_get_section(const CONF *conf, const char *section)
83 {
84 CONF_VALUE *v, vv;
85
86 if ((conf == NULL) || (section == NULL))
87 return (NULL);
88 vv.name = NULL;
89 vv.section = (char *)section;
90 v = lh_CONF_VALUE_retrieve(conf->data, &vv);
91 return (v);
92 }
93
94 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */
STACK_OF(CONF_VALUE)95 STACK_OF(CONF_VALUE) *
96 _CONF_get_section_values(const CONF *conf, const char *section)
97 {
98 CONF_VALUE *v;
99
100 v = _CONF_get_section(conf, section);
101 if (v != NULL)
102 return ((STACK_OF(CONF_VALUE) *)v->value);
103 else
104 return (NULL);
105 }
106
107 int
_CONF_add_string(CONF * conf,CONF_VALUE * section,CONF_VALUE * value)108 _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
109 {
110 CONF_VALUE *v = NULL;
111 STACK_OF(CONF_VALUE) *ts;
112
113 ts = (STACK_OF(CONF_VALUE) *)section->value;
114
115 value->section = section->section;
116 if (!sk_CONF_VALUE_push(ts, value)) {
117 return 0;
118 }
119
120 v = lh_CONF_VALUE_insert(conf->data, value);
121 if (v != NULL) {
122 (void)sk_CONF_VALUE_delete_ptr(ts, v);
123 free(v->name);
124 free(v->value);
125 free(v);
126 }
127 return 1;
128 }
129
130 char *
_CONF_get_string(const CONF * conf,const char * section,const char * name)131 _CONF_get_string(const CONF *conf, const char *section, const char *name)
132 {
133 CONF_VALUE *v, vv;
134
135 if (name == NULL)
136 return (NULL);
137 if (conf != NULL) {
138 if (section != NULL) {
139 vv.name = (char *)name;
140 vv.section = (char *)section;
141 v = lh_CONF_VALUE_retrieve(conf->data, &vv);
142 if (v != NULL)
143 return (v->value);
144 }
145 vv.section = "default";
146 vv.name = (char *)name;
147 v = lh_CONF_VALUE_retrieve(conf->data, &vv);
148 if (v != NULL)
149 return (v->value);
150 else
151 return (NULL);
152 } else
153 return (NULL);
154 }
155
156 static unsigned long
conf_value_hash(const CONF_VALUE * v)157 conf_value_hash(const CONF_VALUE *v)
158 {
159 return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
160 }
161
IMPLEMENT_LHASH_HASH_FN(conf_value,CONF_VALUE)162 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE)
163
164 static int
165 conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b)
166 {
167 int i;
168
169 if (a->section != b->section) {
170 i = strcmp(a->section, b->section);
171 if (i)
172 return (i);
173 }
174 if ((a->name != NULL) && (b->name != NULL)) {
175 i = strcmp(a->name, b->name);
176 return (i);
177 } else if (a->name == b->name)
178 return (0);
179 else
180 return ((a->name == NULL)?-1 : 1);
181 }
182
IMPLEMENT_LHASH_COMP_FN(conf_value,CONF_VALUE)183 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE)
184
185 int
186 _CONF_new_data(CONF *conf)
187 {
188 if (conf == NULL) {
189 return 0;
190 }
191 if (conf->data == NULL)
192 if ((conf->data = lh_CONF_VALUE_new()) == NULL) {
193 return 0;
194 }
195 return 1;
196 }
197
198 void
_CONF_free_data(CONF * conf)199 _CONF_free_data(CONF *conf)
200 {
201 if (conf == NULL || conf->data == NULL)
202 return;
203
204 lh_CONF_VALUE_doall_arg(conf->data,
205 LHASH_DOALL_ARG_FN(value_free_hash),
206 LHASH_OF(CONF_VALUE), conf->data);
207
208 /* We now have only 'section' entries in the hash table.
209 * Due to problems with */
210
211 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack));
212 lh_CONF_VALUE_free(conf->data);
213 }
214
215 static void
value_free_hash_doall_arg(CONF_VALUE * a,LHASH_OF (CONF_VALUE)* conf)216 value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf)
217 {
218 if (a->name != NULL)
219 (void)lh_CONF_VALUE_delete(conf, a);
220 }
221
222 static void
value_free_stack_doall(CONF_VALUE * a)223 value_free_stack_doall(CONF_VALUE *a)
224 {
225 CONF_VALUE *vv;
226 STACK_OF(CONF_VALUE) *sk;
227 int i;
228
229 if (a->name != NULL)
230 return;
231
232 sk = (STACK_OF(CONF_VALUE) *)a->value;
233 for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) {
234 vv = sk_CONF_VALUE_value(sk, i);
235 free(vv->value);
236 free(vv->name);
237 free(vv);
238 }
239 if (sk != NULL)
240 sk_CONF_VALUE_free(sk);
241 free(a->section);
242 free(a);
243 }
244
245 /* Up until OpenSSL 0.9.5a, this was new_section */
246 CONF_VALUE *
_CONF_new_section(CONF * conf,const char * section)247 _CONF_new_section(CONF *conf, const char *section)
248 {
249 STACK_OF(CONF_VALUE) *sk = NULL;
250 int ok = 0, i;
251 CONF_VALUE *v = NULL, *vv;
252
253 if ((sk = sk_CONF_VALUE_new_null()) == NULL)
254 goto err;
255 if ((v = malloc(sizeof(CONF_VALUE))) == NULL)
256 goto err;
257 i = strlen(section) + 1;
258 if ((v->section = malloc(i)) == NULL)
259 goto err;
260
261 memcpy(v->section, section, i);
262 v->name = NULL;
263 v->value = (char *)sk;
264
265 vv = lh_CONF_VALUE_insert(conf->data, v);
266 OPENSSL_assert(vv == NULL);
267 ok = 1;
268
269 err:
270 if (!ok) {
271 if (sk != NULL)
272 sk_CONF_VALUE_free(sk);
273 free(v);
274 v = NULL;
275 }
276 return (v);
277 }
278