1 /*! \file ssl/ssl_cert.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@OpenSSL.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
108 #include <sys/types.h>
112 #include <openssl/objects.h>
113 #include <openssl/bio.h>
114 #include <openssl/pem.h>
115 #include "ssl_locl.h"
117 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
119 static int ssl_x509_store_ctx_idx= -1;
121 if (ssl_x509_store_ctx_idx < 0)
123 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
124 0,"SSL for verify callback",NULL,NULL,NULL);
126 return(ssl_x509_store_ctx_idx);
129 CERT *ssl_cert_new(void)
133 ret=(CERT *)Malloc(sizeof(CERT));
136 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE);
139 memset(ret,0,sizeof(CERT));
146 ret->key->publickey=NULL;
147 ret->key->privatekey=NULL; */
149 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]);
155 CERT *ssl_cert_dup(CERT *cert)
160 ret = (CERT *)Malloc(sizeof(CERT));
163 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
167 memset(ret, 0, sizeof(CERT));
169 ret->cert_type = cert->cert_type;
171 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
172 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
173 * if you find that more readable */
175 ret->valid = cert->valid;
176 ret->mask = cert->mask;
177 ret->export_mask = cert->export_mask;
180 if (cert->rsa_tmp != NULL)
182 ret->rsa_tmp = cert->rsa_tmp;
183 CRYPTO_add(&ret->rsa_tmp->references, 1, CRYPTO_LOCK_RSA);
185 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
189 if (cert->dh_tmp != NULL)
191 /* DH parameters don't have a reference count (and cannot
192 * reasonably be shared anyway, as the secret exponent may
193 * be created just when it is needed -- earlier library
194 * versions did not pay attention to this) */
195 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
196 if (ret->dh_tmp == NULL)
198 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_DH_LIB);
202 ret->dh_tmp_cb = cert->dh_tmp_cb;
205 for (i = 0; i < SSL_PKEY_NUM; i++)
207 if (cert->pkeys[i].x509 != NULL)
209 ret->pkeys[i].x509 = cert->pkeys[i].x509;
210 CRYPTO_add(&ret->pkeys[i].x509->references, 1,
214 if (cert->pkeys[i].privatekey != NULL)
216 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey;
217 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1,
218 CRYPTO_LOCK_EVP_PKEY);
222 /* If there was anything special to do for
223 * certain types of keys, we'd do it here.
224 * (Nothing at the moment, I think.) */
226 case SSL_PKEY_RSA_ENC:
227 case SSL_PKEY_RSA_SIGN:
228 /* We have an RSA key. */
231 case SSL_PKEY_DSA_SIGN:
232 /* We have a DSA key. */
235 case SSL_PKEY_DH_RSA:
236 case SSL_PKEY_DH_DSA:
237 /* We have a DH key. */
242 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG);
248 /* ret->cert_chain should not exist: that's pure per-connection data.
249 * Anyway, we never use this function when it is non-NULL,
250 * so we just don't look at it. */
252 /* ret->extra_certs *should* exist, but currently the own certificate
253 * chain is held inside SSL_CTX */
261 if (ret->rsa_tmp != NULL)
262 RSA_free(ret->rsa_tmp);
265 if (ret->dh_tmp != NULL)
266 DH_free(ret->dh_tmp);
269 for (i = 0; i < SSL_PKEY_NUM; i++)
271 if (ret->pkeys[i].x509 != NULL)
272 X509_free(ret->pkeys[i].x509);
273 if (ret->pkeys[i].privatekey != NULL)
274 EVP_PKEY_free(ret->pkeys[i].privatekey);
281 void ssl_cert_free(CERT *c)
288 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
296 fprintf(stderr,"ssl_cert_free, bad reference count\n");
302 if (c->rsa_tmp) RSA_free(c->rsa_tmp);
305 if (c->dh_tmp) DH_free(c->dh_tmp);
308 for (i=0; i<SSL_PKEY_NUM; i++)
310 if (c->pkeys[i].x509 != NULL)
311 X509_free(c->pkeys[i].x509);
312 if (c->pkeys[i].privatekey != NULL)
313 EVP_PKEY_free(c->pkeys[i].privatekey);
315 if (c->pkeys[i].publickey != NULL)
316 EVP_PKEY_free(c->pkeys[i].publickey);
319 if (c->cert_chain != NULL)
320 sk_X509_pop_free(c->cert_chain,X509_free);
325 int ssl_cert_inst(CERT **o)
327 /* Create a CERT if there isn't already one
328 * (which cannot really happen, as it is initially created in
329 * SSL_CTX_new; but the earlier code usually allows for that one
330 * being non-existant, so we follow that behaviour, as it might
331 * turn out that there actually is a reason for it -- but I'm
332 * not sure that *all* of the existing code could cope with
333 * s->cert being NULL, otherwise we could do without the
334 * initialization in SSL_CTX_new).
339 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
344 if ((*o = ssl_cert_new()) == NULL)
346 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
353 #else /* Not needed any longer: SSL's always have their own copy */
354 int ssl_cert_instantiate(CERT **o, CERT *d)
359 SSLerr(SSL_F_SSL_CERT_INSTANTIATE, ERR_R_PASSED_NULL_PARAMETER);
362 if (*o != NULL && (d == NULL || *o != d))
364 if ((n = ssl_cert_new()) == NULL)
366 SSLerr(SSL_F_SSL_CERT_INSTANTIATE, ERR_R_MALLOC_FAILURE);
376 int ssl_set_cert_type(CERT *c,int type)
382 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk)
388 if ((sk == NULL) || (sk_X509_num(sk) == 0))
391 x=sk_X509_value(sk,0);
392 X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk);
393 if (SSL_get_verify_depth(s) >= 0)
394 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
395 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),
398 if (s->ctx->app_verify_callback != NULL)
399 i=s->ctx->app_verify_callback(&ctx);
402 #ifndef NO_X509_VERIFY
403 i=X509_verify_cert(&ctx);
406 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION;
407 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK);
411 s->verify_result=ctx.error;
412 X509_STORE_CTX_cleanup(&ctx);
417 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *list)
419 if (*ca_list != NULL)
420 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free);
425 STACK *SSL_dup_CA_list(STACK *sk)
432 for (i=0; i<sk_num(sk); i++)
434 name=X509_NAME_dup((X509_NAME *)sk_value(sk,i));
435 if ((name == NULL) || !sk_push(ret,(char *)name))
437 sk_pop_free(ret,X509_NAME_free);
444 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *list)
446 set_client_CA_list(&(s->client_CA),list);
449 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *list)
451 set_client_CA_list(&(ctx->client_CA),list);
454 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(SSL_CTX *ctx)
456 return(ctx->client_CA);
459 STACK_OF(X509_NAME) *SSL_get_client_CA_list(SSL *s)
461 if (s->type == SSL_ST_CONNECT)
462 { /* we are in the client */
463 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
465 return(s->s3->tmp.ca_names);
471 if (s->client_CA != NULL)
472 return(s->client_CA);
474 return(s->ctx->client_CA);
478 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x)
482 if (x == NULL) return(0);
483 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL))
486 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
489 if (!sk_X509_NAME_push(*sk,name))
491 X509_NAME_free(name);
497 int SSL_add_client_CA(SSL *ssl,X509 *x)
499 return(add_client_CA(&(ssl->client_CA),x));
502 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x)
504 return(add_client_CA(&(ctx->client_CA),x));
507 static int name_cmp(X509_NAME **a,X509_NAME **b)
509 return(X509_NAME_cmp(*a,*b));
514 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
515 * it doesn't really have anything to do with clients (except that a common use
516 * for a stack of CAs is to send it to the client). Actually, it doesn't have
517 * much to do with CAs, either, since it will load any old cert.
518 * \param file the file containing one or more certs.
519 * \return a ::STACK containing the certs.
521 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
526 STACK_OF(X509_NAME) *ret,*sk;
528 ret=sk_X509_NAME_new(NULL);
529 sk=sk_X509_NAME_new(name_cmp);
531 in=BIO_new(BIO_s_file_internal());
533 if ((ret == NULL) || (sk == NULL) || (in == NULL))
535 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
539 if (!BIO_read_filename(in,file))
544 if (PEM_read_bio_X509(in,&x,NULL) == NULL)
546 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
547 /* check for duplicates */
548 xn=X509_NAME_dup(xn);
549 if (xn == NULL) goto err;
550 if (sk_X509_NAME_find(sk,xn) >= 0)
554 sk_X509_NAME_push(sk,xn);
555 sk_X509_NAME_push(ret,xn);
562 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free);
565 if (sk != NULL) sk_X509_NAME_free(sk);
566 if (in != NULL) BIO_free(in);
567 if (x != NULL) X509_free(x);
573 * Add a file of certs to a stack.
574 * \param stack the stack to add to.
575 * \param file the file to add from. All certs in this file that are not
576 * already in the stack will be added.
577 * \return 1 for success, 0 for failure. Note that in the case of failure some
578 * certs may have been added to \c stack.
581 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
588 int (*oldcmp)(X509_NAME **a, X509_NAME **b);
590 oldcmp=sk_X509_NAME_set_cmp_func(stack,name_cmp);
592 in=BIO_new(BIO_s_file_internal());
596 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
600 if (!BIO_read_filename(in,file))
605 if (PEM_read_bio_X509(in,&x,NULL) == NULL)
607 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
608 xn=X509_NAME_dup(xn);
609 if (xn == NULL) goto err;
610 if (sk_X509_NAME_find(stack,xn) >= 0)
613 sk_X509_NAME_push(stack,xn);
626 sk_X509_NAME_set_cmp_func(stack,oldcmp);
632 * Add a directory of certs to a stack.
633 * \param stack the stack to append to.
634 * \param dir the directory to append from. All files in this directory will be
635 * examined as potential certs. Any that are acceptable to
636 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
638 * \return 1 for success, 0 for failure. Note that in the case of failure some
639 * certs may have been added to \c stack.
644 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
648 struct dirent *dstruct;
650 /* Note that a side effect is that the CAs will be sorted by name */
653 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
657 while((dstruct=readdir(d)))
661 if(strlen(dir)+strlen(dstruct->d_name)+2 > sizeof buf)
663 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG);
667 sprintf(buf,"%s/%s",dir,dstruct->d_name);
668 if(!SSL_add_file_cert_subjects_to_stack(stack,buf))