ssl/ssl_cert.c

   1 /* ssl/ssl_cert.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 #include <stdio.h>
  60 #include "objects.h"
  61 #include "bio.h"
  62 #include "pem.h"
  63 #include "ssl_locl.h"
  64
  65 CERT *ssl_cert_new()
  66         {
  67         CERT *ret;
  68
  69         ret=(CERT *)Malloc(sizeof(CERT));
  70         if (ret == NULL)
  71                 {
  72                 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE);
  73                 return(NULL);
  74                 }
  75         memset(ret,0,sizeof(CERT));
  76 /*
  77         ret->valid=0;
  78         ret->mask=0;
  79         ret->export_mask=0;
  80         ret->cert_type=0;
  81         ret->key->x509=NULL;
  82         ret->key->publickey=NULL;
  83         ret->key->privatekey=NULL; */
  84
  85         ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]);
  86         ret->references=1;
  87
  88         return(ret);
  89         }
  90
  91 void ssl_cert_free(c)
  92 CERT *c;
  93         {
  94         int i;
  95
  96         i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
  97 #ifdef REF_PRINT
  98         REF_PRINT("CERT",c);
  99 #endif
 100         if (i > 0) return;
 101 #ifdef REF_CHECK
 102         if (i < 0)
 103                 {
 104                 fprintf(stderr,"ssl_cert_free, bad reference count\n");
 105                 abort(); /* ok */
 106                 }
 107 #endif
 108
 109 #ifndef NO_RSA
 110         if (c->rsa_tmp) RSA_free(c->rsa_tmp);
 111 #endif
 112 #ifndef NO_DH
 113         if (c->dh_tmp) DH_free(c->dh_tmp);
 114 #endif
 115
 116         for (i=0; i<SSL_PKEY_NUM; i++)
 117                 {
 118                 if (c->pkeys[i].x509 != NULL)
 119                         X509_free(c->pkeys[i].x509);
 120                 if (c->pkeys[i].privatekey != NULL)
 121                         EVP_PKEY_free(c->pkeys[i].privatekey);
 122 #if 0
 123                 if (c->pkeys[i].publickey != NULL)
 124                         EVP_PKEY_free(c->pkeys[i].publickey);
 125 #endif
 126                 }
 127         if (c->cert_chain != NULL)
 128                 sk_pop_free(c->cert_chain,X509_free);
 129         Free(c);
 130         }
 131
 132 int ssl_set_cert_type(c, type)
 133 CERT *c;
 134 int type;
 135         {
 136         c->cert_type=type;
 137         return(1);
 138         }
 139
 140 int ssl_verify_cert_chain(s,sk)
 141 SSL *s;
 142 STACK *sk;
 143         {
 144         X509 *x;
 145         int i;
 146         X509_STORE_CTX ctx;
 147
 148         if ((sk == NULL) || (sk_num(sk) == 0))
 149                 return(0);
 150
 151         x=(X509 *)sk_value(sk,0);
 152         X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk);
 153         X509_STORE_CTX_set_app_data(&ctx,(char *)s);
 154
 155         if (s->ctx->app_verify_callback != NULL)
 156                 i=s->ctx->app_verify_callback(&ctx);
 157         else
 158                 i=X509_verify_cert(&ctx);
 159
 160         X509_STORE_CTX_cleanup(&ctx);
 161         s->verify_result=ctx.error;
 162
 163         return(i);
 164         }
 165
 166 static void set_client_CA_list(ca_list,list)
 167 STACK **ca_list;
 168 STACK *list;
 169         {
 170         if (*ca_list != NULL)
 171                 sk_pop_free(*ca_list,X509_NAME_free);
 172
 173         *ca_list=list;
 174         }
 175
 176 STACK *SSL_dup_CA_list(sk)
 177 STACK *sk;
 178         {
 179         int i;
 180         STACK *ret;
 181         X509_NAME *name;
 182
 183         ret=sk_new_null();
 184         for (i=0; i<sk_num(sk); i++)
 185                 {
 186                 name=X509_NAME_dup((X509_NAME *)sk_value(sk,i));
 187                 if ((name == NULL) || !sk_push(ret,(char *)name))
 188                         {
 189                         sk_pop_free(ret,X509_NAME_free);
 190                         return(NULL);
 191                         }
 192                 }
 193         return(ret);
 194         }
 195
 196 void SSL_set_client_CA_list(s,list)
 197 SSL *s;
 198 STACK *list;
 199         {
 200         set_client_CA_list(&(s->client_CA),list);
 201         }
 202
 203 void SSL_CTX_set_client_CA_list(ctx,list)
 204 SSL_CTX *ctx;
 205 STACK *list;
 206         {
 207         set_client_CA_list(&(ctx->client_CA),list);
 208         }
 209
 210 STACK *SSL_CTX_get_client_CA_list(ctx)
 211 SSL_CTX *ctx;
 212         {
 213         return(ctx->client_CA);
 214         }
 215
 216 STACK *SSL_get_client_CA_list(s)
 217 SSL *s;
 218         {
 219         if (s->type == SSL_ST_CONNECT)
 220                 { /* we are in the client */
 221                 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
 222                         (s->s3 != NULL))
 223                         return(s->s3->tmp.ca_names);
 224                 else
 225                         return(NULL);
 226                 }
 227         else
 228                 {
 229                 if (s->client_CA != NULL)
 230                         return(s->client_CA);
 231                 else
 232                         return(s->ctx->client_CA);
 233                 }
 234         }
 235
 236 static int add_client_CA(sk,x)
 237 STACK **sk;
 238 X509 *x;
 239         {
 240         X509_NAME *name;
 241
 242         if (x == NULL) return(0);
 243         if ((*sk == NULL) && ((*sk=sk_new_null()) == NULL))
 244                 return(0);
 245
 246         if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
 247                 return(0);
 248
 249         if (!sk_push(*sk,(char *)name))
 250                 {
 251                 X509_NAME_free(name);
 252                 return(0);
 253                 }
 254         return(1);
 255         }
 256
 257 int SSL_add_client_CA(ssl,x)
 258 SSL *ssl;
 259 X509 *x;
 260         {
 261         return(add_client_CA(&(ssl->client_CA),x));
 262         }
 263
 264 int SSL_CTX_add_client_CA(ctx,x)
 265 SSL_CTX *ctx;
 266 X509 *x;
 267         {
 268         return(add_client_CA(&(ctx->client_CA),x));
 269         }
 270
 271 static int name_cmp(a,b)
 272 X509_NAME **a,**b;
 273         {
 274         return(X509_NAME_cmp(*a,*b));
 275         }
 276
 277 #ifndef NO_STDIO
 278 STACK *SSL_load_client_CA_file(file)
 279 char *file;
 280         {
 281         BIO *in;
 282         X509 *x=NULL;
 283         X509_NAME *xn=NULL;
 284         STACK *ret,*sk;
 285
 286         ret=sk_new(NULL);
 287         sk=sk_new(name_cmp);
 288
 289         in=BIO_new(BIO_s_file_internal());
 290
 291         if ((ret == NULL) || (sk == NULL) || (in == NULL))
 292                 {
 293                 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
 294                 goto err;
 295                 }
 296
 297         if (!BIO_read_filename(in,file))
 298                 goto err;
 299
 300         for (;;)
 301                 {
 302                 if (PEM_read_bio_X509(in,&x,NULL) == NULL)
 303                         break;
 304                 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
 305                 /* check for duplicates */
 306                 xn=X509_NAME_dup(xn);
 307                 if (xn == NULL) goto err;
 308                 if (sk_find(sk,(char *)xn) >= 0)
 309                         X509_NAME_free(xn);
 310                 else
 311                         {
 312                         sk_push(sk,(char *)xn);
 313                         sk_push(ret,(char *)xn);
 314                         }
 315                 }
 316
 317         if (0)
 318                 {
 319 err:
 320                 if (ret != NULL) sk_pop_free(ret,X509_NAME_free);
 321                 ret=NULL;
 322                 }
 323         if (sk != NULL) sk_free(sk);
 324         if (in != NULL) BIO_free(in);
 325         if (x != NULL) X509_free(x);
 326         return(ret);
 327         }
 328 #endif
 329