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 #include "e_os.h"
71
72 static void value_free_hash_doall_arg(CONF_VALUE *a,
73 LHASH_OF(CONF_VALUE) *conf);
74 static void value_free_stack_doall(CONF_VALUE *a);
IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash,CONF_VALUE,LHASH_OF (CONF_VALUE))75 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE,
76 LHASH_OF(CONF_VALUE))
77 static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE)
78
79 /* Up until OpenSSL 0.9.5a, this was get_section */
80 CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section)
81 {
82 CONF_VALUE *v,vv;
83
84 if ((conf == NULL) || (section == NULL)) return(NULL);
85 vv.name=NULL;
86 vv.section=(char *)section;
87 v=lh_CONF_VALUE_retrieve(conf->data,&vv);
88 return(v);
89 }
90
91 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */
STACK_OF(CONF_VALUE)92 STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf,
93 const char *section)
94 {
95 CONF_VALUE *v;
96
97 v=_CONF_get_section(conf,section);
98 if (v != NULL)
99 return((STACK_OF(CONF_VALUE) *)v->value);
100 else
101 return(NULL);
102 }
103
_CONF_add_string(CONF * conf,CONF_VALUE * section,CONF_VALUE * value)104 int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
105 {
106 CONF_VALUE *v = NULL;
107 STACK_OF(CONF_VALUE) *ts;
108
109 ts = (STACK_OF(CONF_VALUE) *)section->value;
110
111 value->section=section->section;
112 if (!sk_CONF_VALUE_push(ts,value))
113 {
114 return 0;
115 }
116
117 v = lh_CONF_VALUE_insert(conf->data, value);
118 if (v != NULL)
119 {
120 (void)sk_CONF_VALUE_delete_ptr(ts,v);
121 OPENSSL_free(v->name);
122 OPENSSL_free(v->value);
123 OPENSSL_free(v);
124 }
125 return 1;
126 }
127
_CONF_get_string(const CONF * conf,const char * section,const char * name)128 char *_CONF_get_string(const CONF *conf, const char *section, const char *name)
129 {
130 CONF_VALUE *v,vv;
131 char *p;
132
133 if (name == NULL) return(NULL);
134 if (conf != NULL)
135 {
136 if (section != NULL)
137 {
138 vv.name=(char *)name;
139 vv.section=(char *)section;
140 v=lh_CONF_VALUE_retrieve(conf->data,&vv);
141 if (v != NULL) return(v->value);
142 if (strcmp(section,"ENV") == 0)
143 {
144 p=getenv(name);
145 if (p != NULL) return(p);
146 }
147 }
148 vv.section="default";
149 vv.name=(char *)name;
150 v=lh_CONF_VALUE_retrieve(conf->data,&vv);
151 if (v != NULL)
152 return(v->value);
153 else
154 return(NULL);
155 }
156 else
157 return(getenv(name));
158 }
159
160 #if 0 /* There's no way to provide error checking with this function, so
161 force implementors of the higher levels to get a string and read
162 the number themselves. */
163 long _CONF_get_number(CONF *conf, char *section, char *name)
164 {
165 char *str;
166 long ret=0;
167
168 str=_CONF_get_string(conf,section,name);
169 if (str == NULL) return(0);
170 for (;;)
171 {
172 if (conf->meth->is_number(conf, *str))
173 ret=ret*10+conf->meth->to_int(conf, *str);
174 else
175 return(ret);
176 str++;
177 }
178 }
179 #endif
180
conf_value_hash(const CONF_VALUE * v)181 static unsigned long conf_value_hash(const CONF_VALUE *v)
182 {
183 return (lh_strhash(v->section)<<2)^lh_strhash(v->name);
184 }
IMPLEMENT_LHASH_HASH_FN(conf_value,CONF_VALUE)185 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE)
186
187 static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b)
188 {
189 int i;
190
191 if (a->section != b->section)
192 {
193 i=strcmp(a->section,b->section);
194 if (i) return(i);
195 }
196
197 if ((a->name != NULL) && (b->name != NULL))
198 {
199 i=strcmp(a->name,b->name);
200 return(i);
201 }
202 else if (a->name == b->name)
203 return(0);
204 else
205 return((a->name == NULL)?-1:1);
206 }
IMPLEMENT_LHASH_COMP_FN(conf_value,CONF_VALUE)207 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE)
208
209 int _CONF_new_data(CONF *conf)
210 {
211 if (conf == NULL)
212 {
213 return 0;
214 }
215 if (conf->data == NULL)
216 if ((conf->data = lh_CONF_VALUE_new()) == NULL)
217 {
218 return 0;
219 }
220 return 1;
221 }
222
_CONF_free_data(CONF * conf)223 void _CONF_free_data(CONF *conf)
224 {
225 if (conf == NULL || conf->data == NULL) return;
226
227 lh_CONF_VALUE_down_load(conf->data)=0; /* evil thing to make
228 * sure the 'OPENSSL_free()' works as
229 * expected */
230 lh_CONF_VALUE_doall_arg(conf->data,
231 LHASH_DOALL_ARG_FN(value_free_hash),
232 LHASH_OF(CONF_VALUE), conf->data);
233
234 /* We now have only 'section' entries in the hash table.
235 * Due to problems with */
236
237 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack));
238 lh_CONF_VALUE_free(conf->data);
239 }
240
value_free_hash_doall_arg(CONF_VALUE * a,LHASH_OF (CONF_VALUE)* conf)241 static void value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf)
242 {
243 if (a->name != NULL)
244 (void)lh_CONF_VALUE_delete(conf,a);
245 }
246
value_free_stack_doall(CONF_VALUE * a)247 static void value_free_stack_doall(CONF_VALUE *a)
248 {
249 CONF_VALUE *vv;
250 STACK_OF(CONF_VALUE) *sk;
251 int i;
252
253 if (a->name != NULL) return;
254
255 sk=(STACK_OF(CONF_VALUE) *)a->value;
256 for (i=sk_CONF_VALUE_num(sk)-1; i>=0; i--)
257 {
258 vv=sk_CONF_VALUE_value(sk,i);
259 OPENSSL_free(vv->value);
260 OPENSSL_free(vv->name);
261 OPENSSL_free(vv);
262 }
263 if (sk != NULL) sk_CONF_VALUE_free(sk);
264 OPENSSL_free(a->section);
265 OPENSSL_free(a);
266 }
267
268 /* Up until OpenSSL 0.9.5a, this was new_section */
_CONF_new_section(CONF * conf,const char * section)269 CONF_VALUE *_CONF_new_section(CONF *conf, const char *section)
270 {
271 STACK_OF(CONF_VALUE) *sk=NULL;
272 int ok=0,i;
273 CONF_VALUE *v=NULL,*vv;
274
275 if ((sk=sk_CONF_VALUE_new_null()) == NULL)
276 goto err;
277 if ((v=OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
278 goto err;
279 i=strlen(section)+1;
280 if ((v->section=OPENSSL_malloc(i)) == NULL)
281 goto err;
282
283 memcpy(v->section,section,i);
284 v->name=NULL;
285 v->value=(char *)sk;
286
287 vv=lh_CONF_VALUE_insert(conf->data,v);
288 assert(vv == NULL);
289 ok=1;
290 err:
291 if (!ok)
292 {
293 if (sk != NULL) sk_CONF_VALUE_free(sk);
294 if (v != NULL) OPENSSL_free(v);
295 v=NULL;
296 }
297 return(v);
298 }
299
300 IMPLEMENT_STACK_OF(CONF_VALUE)
301