ssl/ssl_rsa.c

   1 /* ssl/ssl_rsa.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 "ssl_locl.h"
  61 #include <openssl/bio.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/evp.h>
  64 #include <openssl/x509.h>
  65 #include <openssl/pem.h>
  66
  67 static int ssl_set_cert(CERT *c, X509 *x509);
  68 static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey);
  69 int SSL_use_certificate(SSL *ssl, X509 *x)
  70 {
  71     int rv;
  72     if (x == NULL) {
  73         SSLerr(SSL_F_SSL_USE_CERTIFICATE, ERR_R_PASSED_NULL_PARAMETER);
  74         return (0);
  75     }
  76     rv = ssl_security_cert(ssl, NULL, x, 0, 1);
  77     if (rv != 1) {
  78         SSLerr(SSL_F_SSL_USE_CERTIFICATE, rv);
  79         return 0;
  80     }
  81
  82     return (ssl_set_cert(ssl->cert, x));
  83 }
  84
  85 #ifndef OPENSSL_NO_STDIO
  86 int SSL_use_certificate_file(SSL *ssl, const char *file, int type)
  87 {
  88     int j;
  89     BIO *in;
  90     int ret = 0;
  91     X509 *x = NULL;
  92
  93     in = BIO_new(BIO_s_file_internal());
  94     if (in == NULL) {
  95         SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB);
  96         goto end;
  97     }
  98
  99     if (BIO_read_filename(in, file) <= 0) {
 100         SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, ERR_R_SYS_LIB);
 101         goto end;
 102     }
 103     if (type == SSL_FILETYPE_ASN1) {
 104         j = ERR_R_ASN1_LIB;
 105         x = d2i_X509_bio(in, NULL);
 106     } else if (type == SSL_FILETYPE_PEM) {
 107         j = ERR_R_PEM_LIB;
 108         x = PEM_read_bio_X509(in, NULL, ssl->ctx->default_passwd_callback,
 109                               ssl->ctx->default_passwd_callback_userdata);
 110     } else {
 111         SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, SSL_R_BAD_SSL_FILETYPE);
 112         goto end;
 113     }
 114
 115     if (x == NULL) {
 116         SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, j);
 117         goto end;
 118     }
 119
 120     ret = SSL_use_certificate(ssl, x);
 121  end:
 122     X509_free(x);
 123     BIO_free(in);
 124     return (ret);
 125 }
 126 #endif
 127
 128 int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len)
 129 {
 130     X509 *x;
 131     int ret;
 132
 133     x = d2i_X509(NULL, &d, (long)len);
 134     if (x == NULL) {
 135         SSLerr(SSL_F_SSL_USE_CERTIFICATE_ASN1, ERR_R_ASN1_LIB);
 136         return (0);
 137     }
 138
 139     ret = SSL_use_certificate(ssl, x);
 140     X509_free(x);
 141     return (ret);
 142 }
 143
 144 #ifndef OPENSSL_NO_RSA
 145 int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa)
 146 {
 147     EVP_PKEY *pkey;
 148     int ret;
 149
 150     if (rsa == NULL) {
 151         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
 152         return (0);
 153     }
 154     if ((pkey = EVP_PKEY_new()) == NULL) {
 155         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY, ERR_R_EVP_LIB);
 156         return (0);
 157     }
 158
 159     RSA_up_ref(rsa);
 160     EVP_PKEY_assign_RSA(pkey, rsa);
 161
 162     ret = ssl_set_pkey(ssl->cert, pkey);
 163     EVP_PKEY_free(pkey);
 164     return (ret);
 165 }
 166 #endif
 167
 168 static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey)
 169 {
 170     int i;
 171     /*
 172      * Special case for DH: check two DH certificate types for a match. This
 173      * means for DH certificates we must set the certificate first.
 174      */
 175     if (pkey->type == EVP_PKEY_DH) {
 176         X509 *x;
 177         i = -1;
 178         x = c->pkeys[SSL_PKEY_DH_RSA].x509;
 179         if (x && X509_check_private_key(x, pkey))
 180             i = SSL_PKEY_DH_RSA;
 181         x = c->pkeys[SSL_PKEY_DH_DSA].x509;
 182         if (i == -1 && x && X509_check_private_key(x, pkey))
 183             i = SSL_PKEY_DH_DSA;
 184         ERR_clear_error();
 185     } else
 186         i = ssl_cert_type(NULL, pkey);
 187     if (i < 0) {
 188         SSLerr(SSL_F_SSL_SET_PKEY, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
 189         return (0);
 190     }
 191
 192     if (c->pkeys[i].x509 != NULL) {
 193         EVP_PKEY *pktmp;
 194         pktmp = X509_get_pubkey(c->pkeys[i].x509);
 195         EVP_PKEY_copy_parameters(pktmp, pkey);
 196         EVP_PKEY_free(pktmp);
 197         ERR_clear_error();
 198
 199 #ifndef OPENSSL_NO_RSA
 200         /*
 201          * Don't check the public/private key, this is mostly for smart
 202          * cards.
 203          */
 204         if ((pkey->type == EVP_PKEY_RSA) &&
 205             (RSA_flags(pkey->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK)) ;
 206         else
 207 #endif
 208         if (!X509_check_private_key(c->pkeys[i].x509, pkey)) {
 209             X509_free(c->pkeys[i].x509);
 210             c->pkeys[i].x509 = NULL;
 211             return 0;
 212         }
 213     }
 214
 215     EVP_PKEY_free(c->pkeys[i].privatekey);
 216     CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
 217     c->pkeys[i].privatekey = pkey;
 218     c->key = &(c->pkeys[i]);
 219     return (1);
 220 }
 221
 222 #ifndef OPENSSL_NO_RSA
 223 # ifndef OPENSSL_NO_STDIO
 224 int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type)
 225 {
 226     int j, ret = 0;
 227     BIO *in;
 228     RSA *rsa = NULL;
 229
 230     in = BIO_new(BIO_s_file_internal());
 231     if (in == NULL) {
 232         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, ERR_R_BUF_LIB);
 233         goto end;
 234     }
 235
 236     if (BIO_read_filename(in, file) <= 0) {
 237         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, ERR_R_SYS_LIB);
 238         goto end;
 239     }
 240     if (type == SSL_FILETYPE_ASN1) {
 241         j = ERR_R_ASN1_LIB;
 242         rsa = d2i_RSAPrivateKey_bio(in, NULL);
 243     } else if (type == SSL_FILETYPE_PEM) {
 244         j = ERR_R_PEM_LIB;
 245         rsa = PEM_read_bio_RSAPrivateKey(in, NULL,
 246                                          ssl->ctx->default_passwd_callback,
 247                                          ssl->
 248                                          ctx->default_passwd_callback_userdata);
 249     } else {
 250         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
 251         goto end;
 252     }
 253     if (rsa == NULL) {
 254         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, j);
 255         goto end;
 256     }
 257     ret = SSL_use_RSAPrivateKey(ssl, rsa);
 258     RSA_free(rsa);
 259  end:
 260     BIO_free(in);
 261     return (ret);
 262 }
 263 # endif
 264
 265 int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d, long len)
 266 {
 267     int ret;
 268     const unsigned char *p;
 269     RSA *rsa;
 270
 271     p = d;
 272     if ((rsa = d2i_RSAPrivateKey(NULL, &p, (long)len)) == NULL) {
 273         SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
 274         return (0);
 275     }
 276
 277     ret = SSL_use_RSAPrivateKey(ssl, rsa);
 278     RSA_free(rsa);
 279     return (ret);
 280 }
 281 #endif                          /* !OPENSSL_NO_RSA */
 282
 283 int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey)
 284 {
 285     int ret;
 286
 287     if (pkey == NULL) {
 288         SSLerr(SSL_F_SSL_USE_PRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
 289         return (0);
 290     }
 291     ret = ssl_set_pkey(ssl->cert, pkey);
 292     return (ret);
 293 }
 294
 295 #ifndef OPENSSL_NO_STDIO
 296 int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
 297 {
 298     int j, ret = 0;
 299     BIO *in;
 300     EVP_PKEY *pkey = NULL;
 301
 302     in = BIO_new(BIO_s_file_internal());
 303     if (in == NULL) {
 304         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB);
 305         goto end;
 306     }
 307
 308     if (BIO_read_filename(in, file) <= 0) {
 309         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, ERR_R_SYS_LIB);
 310         goto end;
 311     }
 312     if (type == SSL_FILETYPE_PEM) {
 313         j = ERR_R_PEM_LIB;
 314         pkey = PEM_read_bio_PrivateKey(in, NULL,
 315                                        ssl->ctx->default_passwd_callback,
 316                                        ssl->
 317                                        ctx->default_passwd_callback_userdata);
 318     } else if (type == SSL_FILETYPE_ASN1) {
 319         j = ERR_R_ASN1_LIB;
 320         pkey = d2i_PrivateKey_bio(in, NULL);
 321     } else {
 322         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
 323         goto end;
 324     }
 325     if (pkey == NULL) {
 326         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, j);
 327         goto end;
 328     }
 329     ret = SSL_use_PrivateKey(ssl, pkey);
 330     EVP_PKEY_free(pkey);
 331  end:
 332     BIO_free(in);
 333     return (ret);
 334 }
 335 #endif
 336
 337 int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d,
 338                             long len)
 339 {
 340     int ret;
 341     const unsigned char *p;
 342     EVP_PKEY *pkey;
 343
 344     p = d;
 345     if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) {
 346         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
 347         return (0);
 348     }
 349
 350     ret = SSL_use_PrivateKey(ssl, pkey);
 351     EVP_PKEY_free(pkey);
 352     return (ret);
 353 }
 354
 355 int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)
 356 {
 357     int rv;
 358     if (x == NULL) {
 359         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, ERR_R_PASSED_NULL_PARAMETER);
 360         return (0);
 361     }
 362     rv = ssl_security_cert(NULL, ctx, x, 0, 1);
 363     if (rv != 1) {
 364         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, rv);
 365         return 0;
 366     }
 367     return (ssl_set_cert(ctx->cert, x));
 368 }
 369
 370 static int ssl_set_cert(CERT *c, X509 *x)
 371 {
 372     EVP_PKEY *pkey;
 373     int i;
 374
 375     pkey = X509_get_pubkey(x);
 376     if (pkey == NULL) {
 377         SSLerr(SSL_F_SSL_SET_CERT, SSL_R_X509_LIB);
 378         return (0);
 379     }
 380
 381     i = ssl_cert_type(x, pkey);
 382     if (i < 0) {
 383         SSLerr(SSL_F_SSL_SET_CERT, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
 384         EVP_PKEY_free(pkey);
 385         return (0);
 386     }
 387
 388     if (c->pkeys[i].privatekey != NULL) {
 389         EVP_PKEY_copy_parameters(pkey, c->pkeys[i].privatekey);
 390         ERR_clear_error();
 391
 392 #ifndef OPENSSL_NO_RSA
 393         /*
 394          * Don't check the public/private key, this is mostly for smart
 395          * cards.
 396          */
 397         if ((c->pkeys[i].privatekey->type == EVP_PKEY_RSA) &&
 398             (RSA_flags(c->pkeys[i].privatekey->pkey.rsa) &
 399              RSA_METHOD_FLAG_NO_CHECK)) ;
 400         else
 401 #endif                          /* OPENSSL_NO_RSA */
 402         if (!X509_check_private_key(x, c->pkeys[i].privatekey)) {
 403             /*
 404              * don't fail for a cert/key mismatch, just free current private
 405              * key (when switching to a different cert & key, first this
 406              * function should be used, then ssl_set_pkey
 407              */
 408             EVP_PKEY_free(c->pkeys[i].privatekey);
 409             c->pkeys[i].privatekey = NULL;
 410             /* clear error queue */
 411             ERR_clear_error();
 412         }
 413     }
 414
 415     EVP_PKEY_free(pkey);
 416
 417     X509_free(c->pkeys[i].x509);
 418     X509_up_ref(x);
 419     c->pkeys[i].x509 = x;
 420     c->key = &(c->pkeys[i]);
 421
 422     return (1);
 423 }
 424
 425 #ifndef OPENSSL_NO_STDIO
 426 int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
 427 {
 428     int j;
 429     BIO *in;
 430     int ret = 0;
 431     X509 *x = NULL;
 432
 433     in = BIO_new(BIO_s_file_internal());
 434     if (in == NULL) {
 435         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB);
 436         goto end;
 437     }
 438
 439     if (BIO_read_filename(in, file) <= 0) {
 440         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_SYS_LIB);
 441         goto end;
 442     }
 443     if (type == SSL_FILETYPE_ASN1) {
 444         j = ERR_R_ASN1_LIB;
 445         x = d2i_X509_bio(in, NULL);
 446     } else if (type == SSL_FILETYPE_PEM) {
 447         j = ERR_R_PEM_LIB;
 448         x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
 449                               ctx->default_passwd_callback_userdata);
 450     } else {
 451         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, SSL_R_BAD_SSL_FILETYPE);
 452         goto end;
 453     }
 454
 455     if (x == NULL) {
 456         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, j);
 457         goto end;
 458     }
 459
 460     ret = SSL_CTX_use_certificate(ctx, x);
 461  end:
 462     X509_free(x);
 463     BIO_free(in);
 464     return (ret);
 465 }
 466 #endif
 467
 468 int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
 469                                  const unsigned char *d)
 470 {
 471     X509 *x;
 472     int ret;
 473
 474     x = d2i_X509(NULL, &d, (long)len);
 475     if (x == NULL) {
 476         SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1, ERR_R_ASN1_LIB);
 477         return (0);
 478     }
 479
 480     ret = SSL_CTX_use_certificate(ctx, x);
 481     X509_free(x);
 482     return (ret);
 483 }
 484
 485 #ifndef OPENSSL_NO_RSA
 486 int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa)
 487 {
 488     int ret;
 489     EVP_PKEY *pkey;
 490
 491     if (rsa == NULL) {
 492         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
 493         return (0);
 494     }
 495     if ((pkey = EVP_PKEY_new()) == NULL) {
 496         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY, ERR_R_EVP_LIB);
 497         return (0);
 498     }
 499
 500     RSA_up_ref(rsa);
 501     EVP_PKEY_assign_RSA(pkey, rsa);
 502
 503     ret = ssl_set_pkey(ctx->cert, pkey);
 504     EVP_PKEY_free(pkey);
 505     return (ret);
 506 }
 507
 508 # ifndef OPENSSL_NO_STDIO
 509 int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type)
 510 {
 511     int j, ret = 0;
 512     BIO *in;
 513     RSA *rsa = NULL;
 514
 515     in = BIO_new(BIO_s_file_internal());
 516     if (in == NULL) {
 517         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, ERR_R_BUF_LIB);
 518         goto end;
 519     }
 520
 521     if (BIO_read_filename(in, file) <= 0) {
 522         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, ERR_R_SYS_LIB);
 523         goto end;
 524     }
 525     if (type == SSL_FILETYPE_ASN1) {
 526         j = ERR_R_ASN1_LIB;
 527         rsa = d2i_RSAPrivateKey_bio(in, NULL);
 528     } else if (type == SSL_FILETYPE_PEM) {
 529         j = ERR_R_PEM_LIB;
 530         rsa = PEM_read_bio_RSAPrivateKey(in, NULL,
 531                                          ctx->default_passwd_callback,
 532                                          ctx->default_passwd_callback_userdata);
 533     } else {
 534         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
 535         goto end;
 536     }
 537     if (rsa == NULL) {
 538         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, j);
 539         goto end;
 540     }
 541     ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
 542     RSA_free(rsa);
 543  end:
 544     BIO_free(in);
 545     return (ret);
 546 }
 547 # endif
 548
 549 int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
 550                                    long len)
 551 {
 552     int ret;
 553     const unsigned char *p;
 554     RSA *rsa;
 555
 556     p = d;
 557     if ((rsa = d2i_RSAPrivateKey(NULL, &p, (long)len)) == NULL) {
 558         SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
 559         return (0);
 560     }
 561
 562     ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
 563     RSA_free(rsa);
 564     return (ret);
 565 }
 566 #endif                          /* !OPENSSL_NO_RSA */
 567
 568 int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey)
 569 {
 570     if (pkey == NULL) {
 571         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
 572         return (0);
 573     }
 574     return (ssl_set_pkey(ctx->cert, pkey));
 575 }
 576
 577 #ifndef OPENSSL_NO_STDIO
 578 int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
 579 {
 580     int j, ret = 0;
 581     BIO *in;
 582     EVP_PKEY *pkey = NULL;
 583
 584     in = BIO_new(BIO_s_file_internal());
 585     if (in == NULL) {
 586         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB);
 587         goto end;
 588     }
 589
 590     if (BIO_read_filename(in, file) <= 0) {
 591         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_SYS_LIB);
 592         goto end;
 593     }
 594     if (type == SSL_FILETYPE_PEM) {
 595         j = ERR_R_PEM_LIB;
 596         pkey = PEM_read_bio_PrivateKey(in, NULL,
 597                                        ctx->default_passwd_callback,
 598                                        ctx->default_passwd_callback_userdata);
 599     } else if (type == SSL_FILETYPE_ASN1) {
 600         j = ERR_R_ASN1_LIB;
 601         pkey = d2i_PrivateKey_bio(in, NULL);
 602     } else {
 603         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
 604         goto end;
 605     }
 606     if (pkey == NULL) {
 607         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, j);
 608         goto end;
 609     }
 610     ret = SSL_CTX_use_PrivateKey(ctx, pkey);
 611     EVP_PKEY_free(pkey);
 612  end:
 613     BIO_free(in);
 614     return (ret);
 615 }
 616 #endif
 617
 618 int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx,
 619                                 const unsigned char *d, long len)
 620 {
 621     int ret;
 622     const unsigned char *p;
 623     EVP_PKEY *pkey;
 624
 625     p = d;
 626     if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) {
 627         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
 628         return (0);
 629     }
 630
 631     ret = SSL_CTX_use_PrivateKey(ctx, pkey);
 632     EVP_PKEY_free(pkey);
 633     return (ret);
 634 }
 635
 636 #ifndef OPENSSL_NO_STDIO
 637 /*
 638  * Read a file that contains our certificate in "PEM" format, possibly
 639  * followed by a sequence of CA certificates that should be sent to the peer
 640  * in the Certificate message.
 641  */
 642 static int use_certificate_chain_file(SSL_CTX *ctx, SSL *ssl, const char *file)
 643 {
 644     BIO *in;
 645     int ret = 0;
 646     X509 *x = NULL;
 647
 648     ERR_clear_error();          /* clear error stack for
 649                                  * SSL_CTX_use_certificate() */
 650
 651     in = BIO_new(BIO_s_file_internal());
 652     if (in == NULL) {
 653         SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_BUF_LIB);
 654         goto end;
 655     }
 656
 657     if (BIO_read_filename(in, file) <= 0) {
 658         SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_SYS_LIB);
 659         goto end;
 660     }
 661
 662     x = PEM_read_bio_X509_AUX(in, NULL, ctx->default_passwd_callback,
 663                               ctx->default_passwd_callback_userdata);
 664     if (x == NULL) {
 665         SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB);
 666         goto end;
 667     }
 668
 669     if (ctx)
 670         ret = SSL_CTX_use_certificate(ctx, x);
 671     else
 672         ret = SSL_use_certificate(ssl, x);
 673
 674     if (ERR_peek_error() != 0)
 675         ret = 0;                /* Key/certificate mismatch doesn't imply
 676                                  * ret==0 ... */
 677     if (ret) {
 678         /*
 679          * If we could set up our certificate, now proceed to the CA
 680          * certificates.
 681          */
 682         X509 *ca;
 683         int r;
 684         unsigned long err;
 685
 686         if (ctx)
 687             r = SSL_CTX_clear_chain_certs(ctx);
 688         else
 689             r = SSL_clear_chain_certs(ssl);
 690
 691         if (r == 0) {
 692             ret = 0;
 693             goto end;
 694         }
 695
 696         while ((ca = PEM_read_bio_X509(in, NULL,
 697                                        ctx->default_passwd_callback,
 698                                        ctx->default_passwd_callback_userdata))
 699                != NULL) {
 700             if (ctx)
 701                 r = SSL_CTX_add0_chain_cert(ctx, ca);
 702             else
 703                 r = SSL_add0_chain_cert(ssl, ca);
 704             /*
 705              * Note that we must not free ca if it was successfully added to
 706              * the chain (while we must free the main certificate, since its
 707              * reference count is increased by SSL_CTX_use_certificate).
 708              */
 709             if (!r) {
 710                 X509_free(ca);
 711                 ret = 0;
 712                 goto end;
 713             }
 714         }
 715         /* When the while loop ends, it's usually just EOF. */
 716         err = ERR_peek_last_error();
 717         if (ERR_GET_LIB(err) == ERR_LIB_PEM
 718             && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)
 719             ERR_clear_error();
 720         else
 721             ret = 0;            /* some real error */
 722     }
 723
 724  end:
 725     X509_free(x);
 726     BIO_free(in);
 727     return (ret);
 728 }
 729
 730 int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file)
 731 {
 732     return use_certificate_chain_file(ctx, NULL, file);
 733 }
 734
 735 int SSL_use_certificate_chain_file(SSL *ssl, const char *file)
 736 {
 737     return use_certificate_chain_file(NULL, ssl, file);
 738 }
 739 #endif
 740
 741 static int serverinfo_find_extension(const unsigned char *serverinfo,
 742                                      size_t serverinfo_length,
 743                                      unsigned int extension_type,
 744                                      const unsigned char **extension_data,
 745                                      size_t *extension_length)
 746 {
 747     *extension_data = NULL;
 748     *extension_length = 0;
 749     if (serverinfo == NULL || serverinfo_length == 0)
 750         return -1;
 751     for (;;) {
 752         unsigned int type = 0;
 753         size_t len = 0;
 754
 755         /* end of serverinfo */
 756         if (serverinfo_length == 0)
 757             return 0;           /* Extension not found */
 758
 759         /* read 2-byte type field */
 760         if (serverinfo_length < 2)
 761             return -1;          /* Error */
 762         type = (serverinfo[0] << 8) + serverinfo[1];
 763         serverinfo += 2;
 764         serverinfo_length -= 2;
 765
 766         /* read 2-byte len field */
 767         if (serverinfo_length < 2)
 768             return -1;          /* Error */
 769         len = (serverinfo[0] << 8) + serverinfo[1];
 770         serverinfo += 2;
 771         serverinfo_length -= 2;
 772
 773         if (len > serverinfo_length)
 774             return -1;          /* Error */
 775
 776         if (type == extension_type) {
 777             *extension_data = serverinfo;
 778             *extension_length = len;
 779             return 1;           /* Success */
 780         }
 781
 782         serverinfo += len;
 783         serverinfo_length -= len;
 784     }
 785     /* Unreachable */
 786 }
 787
 788 static int serverinfo_srv_parse_cb(SSL *s, unsigned int ext_type,
 789                                    const unsigned char *in,
 790                                    size_t inlen, int *al, void *arg)
 791 {
 792
 793     if (inlen != 0) {
 794         *al = SSL_AD_DECODE_ERROR;
 795         return 0;
 796     }
 797
 798     return 1;
 799 }
 800
 801 static int serverinfo_srv_add_cb(SSL *s, unsigned int ext_type,
 802                                  const unsigned char **out, size_t *outlen,
 803                                  int *al, void *arg)
 804 {
 805     const unsigned char *serverinfo = NULL;
 806     size_t serverinfo_length = 0;
 807
 808     /* Is there serverinfo data for the chosen server cert? */
 809     if ((ssl_get_server_cert_serverinfo(s, &serverinfo,
 810                                         &serverinfo_length)) != 0) {
 811         /* Find the relevant extension from the serverinfo */
 812         int retval = serverinfo_find_extension(serverinfo, serverinfo_length,
 813                                                ext_type, out, outlen);
 814         if (retval == -1) {
 815             *al = SSL_AD_DECODE_ERROR;
 816             return -1;          /* Error */
 817         }
 818         if (retval == 0)
 819             return 0;           /* No extension found, don't send extension */
 820         return 1;               /* Send extension */
 821     }
 822     return -1;                  /* No serverinfo data found, don't send
 823                                  * extension */
 824 }
 825
 826 /*
 827  * With a NULL context, this function just checks that the serverinfo data
 828  * parses correctly.  With a non-NULL context, it registers callbacks for
 829  * the included extensions.
 830  */
 831 static int serverinfo_process_buffer(const unsigned char *serverinfo,
 832                                      size_t serverinfo_length, SSL_CTX *ctx)
 833 {
 834     if (serverinfo == NULL || serverinfo_length == 0)
 835         return 0;
 836     for (;;) {
 837         unsigned int ext_type = 0;
 838         size_t len = 0;
 839
 840         /* end of serverinfo */
 841         if (serverinfo_length == 0)
 842             return 1;
 843
 844         /* read 2-byte type field */
 845         if (serverinfo_length < 2)
 846             return 0;
 847         /* FIXME: check for types we understand explicitly? */
 848
 849         /* Register callbacks for extensions */
 850         ext_type = (serverinfo[0] << 8) + serverinfo[1];
 851         if (ctx && !SSL_CTX_add_server_custom_ext(ctx, ext_type,
 852                                                   serverinfo_srv_add_cb,
 853                                                   NULL, NULL,
 854                                                   serverinfo_srv_parse_cb,
 855                                                   NULL))
 856             return 0;
 857
 858         serverinfo += 2;
 859         serverinfo_length -= 2;
 860
 861         /* read 2-byte len field */
 862         if (serverinfo_length < 2)
 863             return 0;
 864         len = (serverinfo[0] << 8) + serverinfo[1];
 865         serverinfo += 2;
 866         serverinfo_length -= 2;
 867
 868         if (len > serverinfo_length)
 869             return 0;
 870
 871         serverinfo += len;
 872         serverinfo_length -= len;
 873     }
 874 }
 875
 876 int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
 877                            size_t serverinfo_length)
 878 {
 879     unsigned char *new_serverinfo;
 880
 881     if (ctx == NULL || serverinfo == NULL || serverinfo_length == 0) {
 882         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO, ERR_R_PASSED_NULL_PARAMETER);
 883         return 0;
 884     }
 885     if (!serverinfo_process_buffer(serverinfo, serverinfo_length, NULL)) {
 886         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO, SSL_R_INVALID_SERVERINFO_DATA);
 887         return 0;
 888     }
 889     if (ctx->cert->key == NULL) {
 890         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO, ERR_R_INTERNAL_ERROR);
 891         return 0;
 892     }
 893     new_serverinfo = OPENSSL_realloc(ctx->cert->key->serverinfo,
 894                                      serverinfo_length);
 895     if (new_serverinfo == NULL) {
 896         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO, ERR_R_MALLOC_FAILURE);
 897         return 0;
 898     }
 899     ctx->cert->key->serverinfo = new_serverinfo;
 900     memcpy(ctx->cert->key->serverinfo, serverinfo, serverinfo_length);
 901     ctx->cert->key->serverinfo_length = serverinfo_length;
 902
 903     /*
 904      * Now that the serverinfo is validated and stored, go ahead and
 905      * register callbacks.
 906      */
 907     if (!serverinfo_process_buffer(serverinfo, serverinfo_length, ctx)) {
 908         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO, SSL_R_INVALID_SERVERINFO_DATA);
 909         return 0;
 910     }
 911     return 1;
 912 }
 913
 914 #ifndef OPENSSL_NO_STDIO
 915 int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
 916 {
 917     unsigned char *serverinfo = NULL;
 918     size_t serverinfo_length = 0;
 919     unsigned char *extension = 0;
 920     long extension_length = 0;
 921     char *name = NULL;
 922     char *header = NULL;
 923     char namePrefix[] = "SERVERINFO FOR ";
 924     int ret = 0;
 925     BIO *bin = NULL;
 926     size_t num_extensions = 0;
 927
 928     if (ctx == NULL || file == NULL) {
 929         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
 930                ERR_R_PASSED_NULL_PARAMETER);
 931         goto end;
 932     }
 933
 934     bin = BIO_new(BIO_s_file_internal());
 935     if (bin == NULL) {
 936         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_BUF_LIB);
 937         goto end;
 938     }
 939     if (BIO_read_filename(bin, file) <= 0) {
 940         SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_SYS_LIB);
 941         goto end;
 942     }
 943
 944     for (num_extensions = 0;; num_extensions++) {
 945         if (PEM_read_bio(bin, &name, &header, &extension, &extension_length)
 946             == 0) {
 947             /*
 948              * There must be at least one extension in this file
 949              */
 950             if (num_extensions == 0) {
 951                 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
 952                        SSL_R_NO_PEM_EXTENSIONS);
 953                 goto end;
 954             } else              /* End of file, we're done */
 955                 break;
 956         }
 957         /* Check that PEM name starts with "BEGIN SERVERINFO FOR " */
 958         if (strlen(name) < strlen(namePrefix)) {
 959             SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
 960                    SSL_R_PEM_NAME_TOO_SHORT);
 961             goto end;
 962         }
 963         if (strncmp(name, namePrefix, strlen(namePrefix)) != 0) {
 964             SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
 965                    SSL_R_PEM_NAME_BAD_PREFIX);
 966             goto end;
 967         }
 968         /*
 969          * Check that the decoded PEM data is plausible (valid length field)
 970          */
 971         if (extension_length < 4
 972             || (extension[2] << 8) + extension[3] != extension_length - 4) {
 973             SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA);
 974             goto end;
 975         }
 976         /* Append the decoded extension to the serverinfo buffer */
 977         serverinfo =
 978             OPENSSL_realloc(serverinfo, serverinfo_length + extension_length);
 979         if (serverinfo == NULL) {
 980             SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_MALLOC_FAILURE);
 981             goto end;
 982         }
 983         memcpy(serverinfo + serverinfo_length, extension, extension_length);
 984         serverinfo_length += extension_length;
 985
 986         OPENSSL_free(name);
 987         name = NULL;
 988         OPENSSL_free(header);
 989         header = NULL;
 990         OPENSSL_free(extension);
 991         extension = NULL;
 992     }
 993
 994     ret = SSL_CTX_use_serverinfo(ctx, serverinfo, serverinfo_length);
 995  end:
 996     /* SSL_CTX_use_serverinfo makes a local copy of the serverinfo. */
 997     OPENSSL_free(name);
 998     OPENSSL_free(header);
 999     OPENSSL_free(extension);
1000     OPENSSL_free(serverinfo);
1001     BIO_free(bin);
1002     return ret;
1003 }
1004 #endif                         /* OPENSSL_NO_STDIO */