1 /*
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 /*
60 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
61 * Use is subject to license terms.
62 */
63
64 /*
65 * Thread setup portions of this code derived from
66 * OpenSSL 0.9.x file mt/mttest.c examples
67 */
68
69 #include <stdio.h>
70 #include <stdlib.h>
71 #include <string.h>
72 #include <errno.h>
73 #include <libintl.h>
74 #include <synch.h>
75 #include <thread.h>
76 #include <dlfcn.h>
77 #include <openssl/lhash.h>
78 #include <openssl/crypto.h>
79 #include <openssl/ssl.h>
80 #include <openssl/err.h>
81 #include "ipsec_util.h"
82
83 /* OpenSSL function pointers */
84 static X509_NAME *(*d2i_X509_NAME_fn)() = NULL;
85 static int (*X509_NAME_print_ex_fp_fn)() = NULL;
86 static char *(*ERR_get_error_fn)() = NULL;
87 static char *(*ERR_error_string_fn)() = NULL;
88 static void (*SSL_load_error_strings_fn)() = NULL;
89 static void (*ERR_free_strings_fn)() = NULL;
90 static void (*CRYPTO_set_locking_callback_fn)() = NULL;
91 static void (*CRYPTO_set_id_callback_fn)() = NULL;
92 static void (*X509_NAME_free_fn)() = NULL;
93 static int (*CRYPTO_num_locks_fn)() = NULL;
94 static void *(*OPENSSL_malloc_fn)() = NULL;
95 static void (*OPENSSL_free_fn)() = NULL;
96
97 static void solaris_locking_callback(int, int, char *, int);
98 static unsigned long solaris_thread_id(void);
99 static boolean_t thread_setup(void);
100 /* LINTED E_STATIC_UNUSED */
101 static void thread_cleanup(void);
102
103 mutex_t init_lock = DEFAULTMUTEX;
104 static mutex_t *lock_cs;
105 static long *lock_count;
106
107 static boolean_t libssl_loaded = B_FALSE;
108 static boolean_t libcrypto_loaded = B_FALSE;
109
110 void
libssl_load()111 libssl_load()
112 {
113 void *dldesc;
114
115 (void) mutex_lock(&init_lock);
116 if (libssl_loaded) {
117 (void) mutex_unlock(&init_lock);
118 return;
119 }
120
121 dldesc = dlopen(LIBSSL, RTLD_LAZY);
122 if (dldesc != NULL) {
123 d2i_X509_NAME_fn = (X509_NAME*(*)())dlsym(dldesc,
124 "d2i_X509_NAME");
125 if (d2i_X509_NAME_fn == NULL)
126 goto libssl_err;
127
128 X509_NAME_print_ex_fp_fn = (int(*)())dlsym(dldesc,
129 "X509_NAME_print_ex_fp");
130 if (X509_NAME_print_ex_fp_fn == NULL)
131 goto libssl_err;
132
133 ERR_get_error_fn = (char *(*)())dlsym(dldesc,
134 "ERR_get_error");
135 if (ERR_get_error_fn == NULL)
136 goto libssl_err;
137
138 ERR_error_string_fn = (char *(*)())dlsym(dldesc,
139 "ERR_error_string");
140 if (ERR_error_string_fn == NULL)
141 goto libssl_err;
142
143 SSL_load_error_strings_fn = (void(*)())dlsym(dldesc,
144 "SSL_load_error_strings");
145 if (SSL_load_error_strings_fn == NULL)
146 goto libssl_err;
147
148 ERR_free_strings_fn = (void(*)())dlsym(dldesc,
149 "ERR_free_strings");
150 if (ERR_free_strings_fn == NULL)
151 goto libssl_err;
152
153 CRYPTO_set_locking_callback_fn = (void(*)())dlsym(dldesc,
154 "CRYPTO_set_locking_callback");
155 if (CRYPTO_set_locking_callback_fn == NULL)
156 goto libssl_err;
157
158 CRYPTO_set_id_callback_fn = (void(*)())dlsym(dldesc,
159 "CRYPTO_set_id_callback");
160 if (CRYPTO_set_id_callback_fn == NULL)
161 goto libssl_err;
162
163 X509_NAME_free_fn = (void(*)())dlsym(dldesc,
164 "X509_NAME_free");
165 if (X509_NAME_free_fn == NULL)
166 goto libssl_err;
167
168 if (thread_setup() == B_FALSE)
169 goto libssl_err;
170
171 libssl_loaded = B_TRUE;
172 }
173 (void) mutex_unlock(&init_lock);
174 return;
175 libssl_err:
176 (void) dlclose(dldesc);
177 (void) mutex_unlock(&init_lock);
178 }
179
180 void
libcrypto_load()181 libcrypto_load()
182 {
183 void *dldesc;
184
185 (void) mutex_lock(&init_lock);
186 if (libcrypto_loaded) {
187 (void) mutex_unlock(&init_lock);
188 return;
189 }
190
191 dldesc = dlopen(LIBCRYPTO, RTLD_LAZY);
192 if (dldesc != NULL) {
193 CRYPTO_num_locks_fn = (int(*)())dlsym(dldesc,
194 "CRYPTO_num_locks");
195 if (CRYPTO_num_locks_fn == NULL)
196 goto libcrypto_err;
197
198 /*
199 * OPENSSL_free is really a macro, so we
200 * need to reference the actual symbol,
201 * which is CRYPTO_free.
202 */
203 OPENSSL_free_fn = (void(*)())dlsym(dldesc,
204 "CRYPTO_free");
205 if (OPENSSL_free_fn == NULL)
206 goto libcrypto_err;
207
208 /*
209 * OPENSSL_malloc is really a macro, so we
210 * need to reference the actual symbol,
211 * which is CRYPTO_malloc.
212 */
213 OPENSSL_malloc_fn = (void *(*)())dlsym(dldesc,
214 "CRYPTO_malloc");
215 if (OPENSSL_malloc_fn == NULL)
216 goto libcrypto_err;
217
218 libcrypto_loaded = B_TRUE;
219 }
220 (void) mutex_unlock(&init_lock);
221 return;
222 libcrypto_err:
223 (void) dlclose(dldesc);
224 (void) mutex_unlock(&init_lock);
225 }
226
227 static boolean_t
thread_setup(void)228 thread_setup(void)
229 {
230 int i;
231
232 if ((lock_cs = OPENSSL_malloc_fn(CRYPTO_num_locks_fn() *
233 sizeof (mutex_t))) == NULL)
234 return (B_FALSE);
235 if ((lock_count = OPENSSL_malloc_fn(CRYPTO_num_locks_fn() *
236 sizeof (long))) == NULL) {
237 OPENSSL_free_fn(lock_cs);
238 return (B_FALSE);
239 }
240
241 for (i = 0; i < CRYPTO_num_locks_fn(); i++) {
242 lock_count[i] = 0;
243 (void) mutex_init(&(lock_cs[i]), USYNC_THREAD, NULL);
244 }
245
246 CRYPTO_set_id_callback_fn((unsigned long (*)())solaris_thread_id);
247 CRYPTO_set_locking_callback_fn((void (*)())solaris_locking_callback);
248 return (B_TRUE);
249 }
250
251 static void
thread_cleanup(void)252 thread_cleanup(void)
253 {
254 int i;
255
256 (void) mutex_lock(&init_lock);
257 CRYPTO_set_locking_callback_fn(NULL);
258 CRYPTO_set_id_callback_fn(NULL);
259 for (i = 0; i < CRYPTO_num_locks_fn(); i++)
260 (void) mutex_destroy(&(lock_cs[i]));
261 OPENSSL_free_fn(lock_cs);
262 OPENSSL_free_fn(lock_count);
263 (void) mutex_unlock(&init_lock);
264 }
265
266 /* ARGSUSED */
267 static void
solaris_locking_callback(int mode,int type,char * file,int line)268 solaris_locking_callback(int mode, int type, char *file, int line)
269 {
270 if (mode & CRYPTO_LOCK) {
271 (void) mutex_lock(&(lock_cs[type]));
272 lock_count[type]++;
273 } else {
274 (void) mutex_unlock(&(lock_cs[type]));
275 }
276 }
277
278 static unsigned long
solaris_thread_id(void)279 solaris_thread_id(void)
280 {
281 unsigned long ret;
282
283 ret = (unsigned long)thr_self();
284 return (ret);
285 }
286
287 void
print_asn1_name(FILE * file,const unsigned char * buf,long buflen)288 print_asn1_name(FILE *file, const unsigned char *buf, long buflen)
289 {
290 libcrypto_load();
291 if (libcrypto_loaded)
292 libssl_load();
293
294 if (libssl_loaded && libcrypto_loaded) {
295 X509_NAME *x509name = NULL;
296 const unsigned char *p;
297
298 /* Make an effort to decode the ASN1 encoded name */
299 SSL_load_error_strings_fn();
300
301 /*
302 * Temporary variable is mandatory per d2i_X509(3). Upcoming
303 * call to d2i_X509_NAME_fn() will change the 'p' pointer.
304 */
305 p = buf;
306
307 x509name = d2i_X509_NAME_fn(NULL, &p, buflen);
308 if (x509name != NULL) {
309 (void) X509_NAME_print_ex_fp_fn(file, x509name, 0,
310 (ASN1_STRFLGS_RFC2253 | ASN1_STRFLGS_ESC_QUOTE |
311 XN_FLAG_SEP_CPLUS_SPC | XN_FLAG_FN_SN));
312 X509_NAME_free_fn(x509name);
313 (void) fprintf(file, "\n");
314 } else {
315 char errbuf[80];
316
317 (void) fprintf(file, "\n# %s\n",
318 ERR_error_string_fn(ERR_get_error_fn(), errbuf));
319 (void) fprintf(file, dgettext(TEXT_DOMAIN,
320 "<cannot interpret>\n"));
321 }
322 ERR_free_strings_fn();
323 } else {
324 (void) fprintf(file, dgettext(TEXT_DOMAIN, "<cannot print>\n"));
325 }
326 }
327