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1/* conf_api.c */
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 <assert.h>
67#include <string.h>
68#include <openssl/conf.h>
69#include <openssl/conf_api.h>
70
71static void value_free_hash(CONF_VALUE *a, LHASH *conf);
72static void value_free_stack(CONF_VALUE *a,LHASH *conf);
73static unsigned long hash(CONF_VALUE *v);
74static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b);
75
76/* Up until OpenSSL 0.9.5a, this was get_section */
77CONF_VALUE *_CONF_get_section(CONF *conf, char *section)
78 {
79 CONF_VALUE *v,vv;
80
81 if ((conf == NULL) || (section == NULL)) return(NULL);
82 vv.name=NULL;
83 vv.section=section;
84 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
85 return(v);
86 }
87
88/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
89STACK_OF(CONF_VALUE) *_CONF_get_section_values(CONF *conf, char *section)
90 {
91 CONF_VALUE *v;
92
93 v=_CONF_get_section(conf,section);
94 if (v != NULL)
95 return((STACK_OF(CONF_VALUE) *)v->value);
96 else
97 return(NULL);
98 }
99
100int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
101 {
102 CONF_VALUE *v = NULL;
103 STACK_OF(CONF_VALUE) *ts;
104
105 ts = (STACK_OF(CONF_VALUE) *)section->value;
106
107 value->section=section->section;
108 if (!sk_CONF_VALUE_push(ts,value))
109 {
110 return 0;
111 }
112
113 v = (CONF_VALUE *)lh_insert(conf->data, value);
114 if (v != NULL)
115 {
116 sk_CONF_VALUE_delete_ptr(ts,v);
117 OPENSSL_free(v->name);
118 OPENSSL_free(v->value);
119 OPENSSL_free(v);
120 }
121 return 1;
122 }
123
124char *_CONF_get_string(CONF *conf, char *section, char *name)
125 {
126 CONF_VALUE *v,vv;
127 char *p;
128
129 if (name == NULL) return(NULL);
130 if (conf != NULL)
131 {
132 if (section != NULL)
133 {
134 vv.name=name;
135 vv.section=section;
136 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
137 if (v != NULL) return(v->value);
138 if (strcmp(section,"ENV") == 0)
139 {
140 p=Getenv(name);
141 if (p != NULL) return(p);
142 }
143 }
144 vv.section="default";
145 vv.name=name;
146 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
147 if (v != NULL)
148 return(v->value);
149 else
150 return(NULL);
151 }
152 else
153 return(Getenv(name));
154 }
155
156long _CONF_get_number(CONF *conf, char *section, char *name)
157 {
158 char *str;
159 long ret=0;
160
161 str=_CONF_get_string(conf,section,name);
162 if (str == NULL) return(0);
163 for (;;)
164 {
165 if (conf->meth->is_number(conf, *str))
166 ret=ret*10+conf->meth->to_int(conf, *str);
167 else
168 return(ret);
169 str++;
170 }
171 }
172
173int _CONF_new_data(CONF *conf)
174 {
175 if (conf == NULL)
176 {
177 return 0;
178 }
179 if (conf->data == NULL)
180 if ((conf->data = lh_new(hash,cmp_conf)) == NULL)
181 {
182 return 0;
183 }
184 return 1;
185 }
186
187void _CONF_free_data(CONF *conf)
188 {
189 if (conf == NULL || conf->data == NULL) return;
190
191 conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()'
192 * works as expected */
193 lh_doall_arg(conf->data,(void (*)())value_free_hash,conf->data);
194
195 /* We now have only 'section' entries in the hash table.
196 * Due to problems with */
197
198 lh_doall_arg(conf->data,(void (*)())value_free_stack,conf->data);
199 lh_free(conf->data);
200 }
201
202static void value_free_hash(CONF_VALUE *a, LHASH *conf)
203 {
204 if (a->name != NULL)
205 {
206 a=(CONF_VALUE *)lh_delete(conf,a);
207 }
208 }
209
210static void value_free_stack(CONF_VALUE *a, LHASH *conf)
211 {
212 CONF_VALUE *vv;
213 STACK *sk;
214 int i;
215
216 if (a->name != NULL) return;
217
218 sk=(STACK *)a->value;
219 for (i=sk_num(sk)-1; i>=0; i--)
220 {
221 vv=(CONF_VALUE *)sk_value(sk,i);
222 OPENSSL_free(vv->value);
223 OPENSSL_free(vv->name);
224 OPENSSL_free(vv);
225 }
226 if (sk != NULL) sk_free(sk);
227 OPENSSL_free(a->section);
228 OPENSSL_free(a);
229 }
230
231static unsigned long hash(CONF_VALUE *v)
232 {
233 return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
234 }
235
236static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b)
237 {
238 int i;
239
240 if (a->section != b->section)
241 {
242 i=strcmp(a->section,b->section);
243 if (i) return(i);
244 }
245
246 if ((a->name != NULL) && (b->name != NULL))
247 {
248 i=strcmp(a->name,b->name);
249 return(i);
250 }
251 else if (a->name == b->name)
252 return(0);
253 else
254 return((a->name == NULL)?-1:1);
255 }
256
257/* Up until OpenSSL 0.9.5a, this was new_section */
258CONF_VALUE *_CONF_new_section(CONF *conf, char *section)
259 {
260 STACK *sk=NULL;
261 int ok=0,i;
262 CONF_VALUE *v=NULL,*vv;
263
264 if ((sk=sk_new_null()) == NULL)
265 goto err;
266 if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
267 goto err;
268 i=strlen(section)+1;
269 if ((v->section=(char *)OPENSSL_malloc(i)) == NULL)
270 goto err;
271
272 memcpy(v->section,section,i);
273 v->name=NULL;
274 v->value=(char *)sk;
275
276 vv=(CONF_VALUE *)lh_insert(conf->data,v);
277 assert(vv == NULL);
278 ok=1;
279err:
280 if (!ok)
281 {
282 if (sk != NULL) sk_free(sk);
283 if (v != NULL) OPENSSL_free(v);
284 v=NULL;
285 }
286 return(v);
287 }
288
289IMPLEMENT_STACK_OF(CONF_VALUE)