crypto/libressl/ssl/ssl_rsa.c

   1 /* $OpenBSD: ssl_rsa.c,v 1.48 2022/08/31 20:49:37 tb Exp $ */
   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
  61 #include <openssl/bio.h>
  62 #include <openssl/evp.h>
  63 #include <openssl/objects.h>
  64 #include <openssl/pem.h>
  65 #include <openssl/x509.h>
  66
  67 #include "ssl_locl.h"
  68
  69 static int ssl_get_password_cb_and_arg(SSL_CTX *ctx, SSL *ssl,
  70     pem_password_cb **passwd_cb, void **passwd_arg);
  71 static int ssl_set_cert(SSL_CTX *ctx, SSL *ssl, X509 *x509);
  72 static int ssl_set_pkey(SSL_CTX *ctx, SSL *ssl, EVP_PKEY *pkey);
  73 static int ssl_use_certificate_chain_bio(SSL_CTX *ctx, SSL *ssl, BIO *in);
  74 static int ssl_use_certificate_chain_file(SSL_CTX *ctx, SSL *ssl,
  75     const char *file);
  76
  77 int
  78 SSL_use_certificate(SSL *ssl, X509 *x)
  79 {
  80         if (x == NULL) {
  81                 SSLerror(ssl, ERR_R_PASSED_NULL_PARAMETER);
  82                 return (0);
  83         }
  84         return ssl_set_cert(NULL, ssl, x);
  85 }
  86
  87 int
  88 SSL_use_certificate_file(SSL *ssl, const char *file, int type)
  89 {
  90         int j;
  91         BIO *in;
  92         int ret = 0;
  93         X509 *x = NULL;
  94
  95         in = BIO_new(BIO_s_file());
  96         if (in == NULL) {
  97                 SSLerror(ssl, ERR_R_BUF_LIB);
  98                 goto end;
  99         }
 100
 101         if (BIO_read_filename(in, file) <= 0) {
 102                 SSLerror(ssl, ERR_R_SYS_LIB);
 103                 goto end;
 104         }
 105         if (type == SSL_FILETYPE_ASN1) {
 106                 j = ERR_R_ASN1_LIB;
 107                 x = d2i_X509_bio(in, NULL);
 108         } else if (type == SSL_FILETYPE_PEM) {
 109                 j = ERR_R_PEM_LIB;
 110                 x = PEM_read_bio_X509(in, NULL,
 111                     ssl->ctx->default_passwd_callback,
 112                     ssl->ctx->default_passwd_callback_userdata);
 113         } else {
 114                 SSLerror(ssl, SSL_R_BAD_SSL_FILETYPE);
 115                 goto end;
 116         }
 117
 118         if (x == NULL) {
 119                 SSLerror(ssl, j);
 120                 goto end;
 121         }
 122
 123         ret = SSL_use_certificate(ssl, x);
 124  end:
 125         X509_free(x);
 126         BIO_free(in);
 127         return (ret);
 128 }
 129
 130 int
 131 SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len)
 132 {
 133         X509 *x;
 134         int ret;
 135
 136         x = d2i_X509(NULL, &d, (long)len);
 137         if (x == NULL) {
 138                 SSLerror(ssl, ERR_R_ASN1_LIB);
 139                 return (0);
 140         }
 141
 142         ret = SSL_use_certificate(ssl, x);
 143         X509_free(x);
 144         return (ret);
 145 }
 146
 147 int
 148 SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa)
 149 {
 150         EVP_PKEY *pkey;
 151         int ret;
 152
 153         if (rsa == NULL) {
 154                 SSLerror(ssl, ERR_R_PASSED_NULL_PARAMETER);
 155                 return (0);
 156         }
 157         if ((pkey = EVP_PKEY_new()) == NULL) {
 158                 SSLerror(ssl, ERR_R_EVP_LIB);
 159                 return (0);
 160         }
 161
 162         RSA_up_ref(rsa);
 163         EVP_PKEY_assign_RSA(pkey, rsa);
 164
 165         ret = ssl_set_pkey(NULL, ssl, pkey);
 166         EVP_PKEY_free(pkey);
 167         return (ret);
 168 }
 169
 170 static int
 171 ssl_set_pkey(SSL_CTX *ctx, SSL *ssl, EVP_PKEY *pkey)
 172 {
 173         SSL_CERT *c;
 174         int i;
 175
 176         i = ssl_cert_type(pkey);
 177         if (i < 0) {
 178                 SSLerrorx(SSL_R_UNKNOWN_CERTIFICATE_TYPE);
 179                 return (0);
 180         }
 181
 182         if ((c = ssl_get0_cert(ctx, ssl)) == NULL)
 183                 return (0);
 184
 185         if (c->pkeys[i].x509 != NULL) {
 186                 EVP_PKEY *pktmp;
 187
 188                 if ((pktmp = X509_get0_pubkey(c->pkeys[i].x509)) == NULL)
 189                         return 0;
 190
 191                 /*
 192                  * Callers of EVP_PKEY_copy_parameters() can't distinguish
 193                  * errors from the absence of a param_copy() method. So
 194                  * pretend it can never fail.
 195                  */
 196                 EVP_PKEY_copy_parameters(pktmp, pkey);
 197
 198                 ERR_clear_error();
 199
 200                 /*
 201                  * Don't check the public/private key, this is mostly
 202                  * for smart cards.
 203                  */
 204                 if (EVP_PKEY_id(pkey) != EVP_PKEY_RSA ||
 205                     !(RSA_flags(EVP_PKEY_get0_RSA(pkey)) & RSA_METHOD_FLAG_NO_CHECK)) {
 206                         if (!X509_check_private_key(c->pkeys[i].x509, pkey)) {
 207                                 X509_free(c->pkeys[i].x509);
 208                                 c->pkeys[i].x509 = NULL;
 209                                 return 0;
 210                         }
 211                 }
 212         }
 213
 214         EVP_PKEY_free(c->pkeys[i].privatekey);
 215         EVP_PKEY_up_ref(pkey);
 216         c->pkeys[i].privatekey = pkey;
 217         c->key = &(c->pkeys[i]);
 218
 219         c->valid = 0;
 220         return 1;
 221 }
 222
 223 int
 224 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());
 231         if (in == NULL) {
 232                 SSLerror(ssl, ERR_R_BUF_LIB);
 233                 goto end;
 234         }
 235
 236         if (BIO_read_filename(in, file) <= 0) {
 237                 SSLerror(ssl, 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->ctx->default_passwd_callback_userdata);
 248         } else {
 249                 SSLerror(ssl, SSL_R_BAD_SSL_FILETYPE);
 250                 goto end;
 251         }
 252         if (rsa == NULL) {
 253                 SSLerror(ssl, j);
 254                 goto end;
 255         }
 256         ret = SSL_use_RSAPrivateKey(ssl, rsa);
 257         RSA_free(rsa);
 258  end:
 259         BIO_free(in);
 260         return (ret);
 261 }
 262
 263 int
 264 SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d, long len)
 265 {
 266         int ret;
 267         RSA *rsa;
 268
 269         if ((rsa = d2i_RSAPrivateKey(NULL, &d, (long)len)) == NULL) {
 270                 SSLerror(ssl, ERR_R_ASN1_LIB);
 271                 return (0);
 272         }
 273
 274         ret = SSL_use_RSAPrivateKey(ssl, rsa);
 275         RSA_free(rsa);
 276         return (ret);
 277 }
 278
 279 int
 280 SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey)
 281 {
 282         int ret;
 283
 284         if (pkey == NULL) {
 285                 SSLerror(ssl, ERR_R_PASSED_NULL_PARAMETER);
 286                 return (0);
 287         }
 288         ret = ssl_set_pkey(NULL, ssl, pkey);
 289         return (ret);
 290 }
 291
 292 int
 293 SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
 294 {
 295         int j, ret = 0;
 296         BIO *in;
 297         EVP_PKEY *pkey = NULL;
 298
 299         in = BIO_new(BIO_s_file());
 300         if (in == NULL) {
 301                 SSLerror(ssl, ERR_R_BUF_LIB);
 302                 goto end;
 303         }
 304
 305         if (BIO_read_filename(in, file) <= 0) {
 306                 SSLerror(ssl, ERR_R_SYS_LIB);
 307                 goto end;
 308         }
 309         if (type == SSL_FILETYPE_PEM) {
 310                 j = ERR_R_PEM_LIB;
 311                 pkey = PEM_read_bio_PrivateKey(in, NULL,
 312                     ssl->ctx->default_passwd_callback,
 313                     ssl->ctx->default_passwd_callback_userdata);
 314         } else if (type == SSL_FILETYPE_ASN1) {
 315                 j = ERR_R_ASN1_LIB;
 316                 pkey = d2i_PrivateKey_bio(in, NULL);
 317         } else {
 318                 SSLerror(ssl, SSL_R_BAD_SSL_FILETYPE);
 319                 goto end;
 320         }
 321         if (pkey == NULL) {
 322                 SSLerror(ssl, j);
 323                 goto end;
 324         }
 325         ret = SSL_use_PrivateKey(ssl, pkey);
 326         EVP_PKEY_free(pkey);
 327  end:
 328         BIO_free(in);
 329         return (ret);
 330 }
 331
 332 int
 333 SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d, long len)
 334 {
 335         int ret;
 336         EVP_PKEY *pkey;
 337
 338         if ((pkey = d2i_PrivateKey(type, NULL, &d, (long)len)) == NULL) {
 339                 SSLerror(ssl, ERR_R_ASN1_LIB);
 340                 return (0);
 341         }
 342
 343         ret = SSL_use_PrivateKey(ssl, pkey);
 344         EVP_PKEY_free(pkey);
 345         return (ret);
 346 }
 347
 348 int
 349 SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)
 350 {
 351         if (x == NULL) {
 352                 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
 353                 return (0);
 354         }
 355         return ssl_set_cert(ctx, NULL, x);
 356 }
 357
 358 static int
 359 ssl_get_password_cb_and_arg(SSL_CTX *ctx, SSL *ssl,
 360     pem_password_cb **passwd_cb, void **passwd_arg)
 361 {
 362         if (ssl != NULL)
 363                 ctx = ssl->ctx;
 364
 365         *passwd_cb = ctx->default_passwd_callback;
 366         *passwd_arg = ctx->default_passwd_callback_userdata;
 367
 368         return 1;
 369 }
 370
 371 static int
 372 ssl_set_cert(SSL_CTX *ctx, SSL *ssl, X509 *x)
 373 {
 374         SSL_CERT *c;
 375         EVP_PKEY *pkey;
 376         int ssl_err;
 377         int i;
 378
 379         if (!ssl_security_cert(ctx, ssl, x, 1, &ssl_err)) {
 380                 SSLerrorx(ssl_err);
 381                 return (0);
 382         }
 383
 384         if ((c = ssl_get0_cert(ctx, ssl)) == NULL)
 385                 return (0);
 386
 387         pkey = X509_get_pubkey(x);
 388         if (pkey == NULL) {
 389                 SSLerrorx(SSL_R_X509_LIB);
 390                 return (0);
 391         }
 392
 393         i = ssl_cert_type(pkey);
 394         if (i < 0) {
 395                 SSLerrorx(SSL_R_UNKNOWN_CERTIFICATE_TYPE);
 396                 EVP_PKEY_free(pkey);
 397                 return (0);
 398         }
 399
 400         if (c->pkeys[i].privatekey != NULL) {
 401                 EVP_PKEY *priv_key = c->pkeys[i].privatekey;
 402
 403                 EVP_PKEY_copy_parameters(pkey, priv_key);
 404                 ERR_clear_error();
 405
 406                 /*
 407                  * Don't check the public/private key, this is mostly
 408                  * for smart cards.
 409                  */
 410                 if (EVP_PKEY_id(priv_key) != EVP_PKEY_RSA ||
 411                     !(RSA_flags(EVP_PKEY_get0_RSA(priv_key)) & RSA_METHOD_FLAG_NO_CHECK)) {
 412                         if (!X509_check_private_key(x, priv_key)) {
 413                                 /*
 414                                  * don't fail for a cert/key mismatch, just free
 415                                  * current private key (when switching to a
 416                                  * different cert & key, first this function
 417                                  * should be used, then ssl_set_pkey.
 418                                  */
 419                                 EVP_PKEY_free(c->pkeys[i].privatekey);
 420                                 c->pkeys[i].privatekey = NULL;
 421                                 ERR_clear_error();
 422                         }
 423                 }
 424         }
 425
 426         EVP_PKEY_free(pkey);
 427
 428         X509_free(c->pkeys[i].x509);
 429         X509_up_ref(x);
 430         c->pkeys[i].x509 = x;
 431         c->key = &(c->pkeys[i]);
 432
 433         c->valid = 0;
 434         return (1);
 435 }
 436
 437 int
 438 SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
 439 {
 440         int j;
 441         BIO *in;
 442         int ret = 0;
 443         X509 *x = NULL;
 444
 445         in = BIO_new(BIO_s_file());
 446         if (in == NULL) {
 447                 SSLerrorx(ERR_R_BUF_LIB);
 448                 goto end;
 449         }
 450
 451         if (BIO_read_filename(in, file) <= 0) {
 452                 SSLerrorx(ERR_R_SYS_LIB);
 453                 goto end;
 454         }
 455         if (type == SSL_FILETYPE_ASN1) {
 456                 j = ERR_R_ASN1_LIB;
 457                 x = d2i_X509_bio(in, NULL);
 458         } else if (type == SSL_FILETYPE_PEM) {
 459                 j = ERR_R_PEM_LIB;
 460                 x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
 461                     ctx->default_passwd_callback_userdata);
 462         } else {
 463                 SSLerrorx(SSL_R_BAD_SSL_FILETYPE);
 464                 goto end;
 465         }
 466
 467         if (x == NULL) {
 468                 SSLerrorx(j);
 469                 goto end;
 470         }
 471
 472         ret = SSL_CTX_use_certificate(ctx, x);
 473  end:
 474         X509_free(x);
 475         BIO_free(in);
 476         return (ret);
 477 }
 478
 479 int
 480 SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d)
 481 {
 482         X509 *x;
 483         int ret;
 484
 485         x = d2i_X509(NULL, &d, (long)len);
 486         if (x == NULL) {
 487                 SSLerrorx(ERR_R_ASN1_LIB);
 488                 return (0);
 489         }
 490
 491         ret = SSL_CTX_use_certificate(ctx, x);
 492         X509_free(x);
 493         return (ret);
 494 }
 495
 496 int
 497 SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa)
 498 {
 499         int ret;
 500         EVP_PKEY *pkey;
 501
 502         if (rsa == NULL) {
 503                 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
 504                 return (0);
 505         }
 506         if ((pkey = EVP_PKEY_new()) == NULL) {
 507                 SSLerrorx(ERR_R_EVP_LIB);
 508                 return (0);
 509         }
 510
 511         RSA_up_ref(rsa);
 512         EVP_PKEY_assign_RSA(pkey, rsa);
 513
 514         ret = ssl_set_pkey(ctx, NULL, pkey);
 515         EVP_PKEY_free(pkey);
 516         return (ret);
 517 }
 518
 519 int
 520 SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type)
 521 {
 522         int j, ret = 0;
 523         BIO *in;
 524         RSA *rsa = NULL;
 525
 526         in = BIO_new(BIO_s_file());
 527         if (in == NULL) {
 528                 SSLerrorx(ERR_R_BUF_LIB);
 529                 goto end;
 530         }
 531
 532         if (BIO_read_filename(in, file) <= 0) {
 533                 SSLerrorx(ERR_R_SYS_LIB);
 534                 goto end;
 535         }
 536         if (type == SSL_FILETYPE_ASN1) {
 537                 j = ERR_R_ASN1_LIB;
 538                 rsa = d2i_RSAPrivateKey_bio(in, NULL);
 539         } else if (type == SSL_FILETYPE_PEM) {
 540                 j = ERR_R_PEM_LIB;
 541                 rsa = PEM_read_bio_RSAPrivateKey(in, NULL,
 542                     ctx->default_passwd_callback,
 543                     ctx->default_passwd_callback_userdata);
 544         } else {
 545                 SSLerrorx(SSL_R_BAD_SSL_FILETYPE);
 546                 goto end;
 547         }
 548         if (rsa == NULL) {
 549                 SSLerrorx(j);
 550                 goto end;
 551         }
 552         ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
 553         RSA_free(rsa);
 554  end:
 555         BIO_free(in);
 556         return (ret);
 557 }
 558
 559 int
 560 SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d, long len)
 561 {
 562         int ret;
 563         RSA *rsa;
 564
 565         if ((rsa = d2i_RSAPrivateKey(NULL, &d, (long)len)) == NULL) {
 566                 SSLerrorx(ERR_R_ASN1_LIB);
 567                 return (0);
 568         }
 569
 570         ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
 571         RSA_free(rsa);
 572         return (ret);
 573 }
 574
 575 int
 576 SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey)
 577 {
 578         if (pkey == NULL) {
 579                 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
 580                 return (0);
 581         }
 582         return ssl_set_pkey(ctx, NULL, pkey);
 583 }
 584
 585 int
 586 SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
 587 {
 588         int j, ret = 0;
 589         BIO *in;
 590         EVP_PKEY *pkey = NULL;
 591
 592         in = BIO_new(BIO_s_file());
 593         if (in == NULL) {
 594                 SSLerrorx(ERR_R_BUF_LIB);
 595                 goto end;
 596         }
 597
 598         if (BIO_read_filename(in, file) <= 0) {
 599                 SSLerrorx(ERR_R_SYS_LIB);
 600                 goto end;
 601         }
 602         if (type == SSL_FILETYPE_PEM) {
 603                 j = ERR_R_PEM_LIB;
 604                 pkey = PEM_read_bio_PrivateKey(in, NULL,
 605                     ctx->default_passwd_callback,
 606                     ctx->default_passwd_callback_userdata);
 607         } else if (type == SSL_FILETYPE_ASN1) {
 608                 j = ERR_R_ASN1_LIB;
 609                 pkey = d2i_PrivateKey_bio(in, NULL);
 610         } else {
 611                 SSLerrorx(SSL_R_BAD_SSL_FILETYPE);
 612                 goto end;
 613         }
 614         if (pkey == NULL) {
 615                 SSLerrorx(j);
 616                 goto end;
 617         }
 618         ret = SSL_CTX_use_PrivateKey(ctx, pkey);
 619         EVP_PKEY_free(pkey);
 620  end:
 621         BIO_free(in);
 622         return (ret);
 623 }
 624
 625 int
 626 SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, const unsigned char *d,
 627     long len)
 628 {
 629         int ret;
 630         EVP_PKEY *pkey;
 631
 632         if ((pkey = d2i_PrivateKey(type, NULL, &d, (long)len)) == NULL) {
 633                 SSLerrorx(ERR_R_ASN1_LIB);
 634                 return (0);
 635         }
 636
 637         ret = SSL_CTX_use_PrivateKey(ctx, pkey);
 638         EVP_PKEY_free(pkey);
 639         return (ret);
 640 }
 641
 642
 643 /*
 644  * Read a bio that contains our certificate in "PEM" format,
 645  * possibly followed by a sequence of CA certificates that should be
 646  * sent to the peer in the Certificate message.
 647  */
 648 static int
 649 ssl_use_certificate_chain_bio(SSL_CTX *ctx, SSL *ssl, BIO *in)
 650 {
 651         pem_password_cb *passwd_cb;
 652         void *passwd_arg;
 653         X509 *ca, *x = NULL;
 654         unsigned long err;
 655         int ret = 0;
 656
 657         if (!ssl_get_password_cb_and_arg(ctx, ssl, &passwd_cb, &passwd_arg))
 658                 goto err;
 659
 660         if ((x = PEM_read_bio_X509_AUX(in, NULL, passwd_cb, passwd_arg)) ==
 661             NULL) {
 662                 SSLerrorx(ERR_R_PEM_LIB);
 663                 goto err;
 664         }
 665
 666         if (!ssl_set_cert(ctx, ssl, x))
 667                 goto err;
 668
 669         if (!ssl_cert_set0_chain(ctx, ssl, NULL))
 670                 goto err;
 671
 672         /* Process any additional CA certificates. */
 673         while ((ca = PEM_read_bio_X509(in, NULL, passwd_cb, passwd_arg)) !=
 674             NULL) {
 675                 if (!ssl_cert_add0_chain_cert(ctx, ssl, ca)) {
 676                         X509_free(ca);
 677                         goto err;
 678                 }
 679         }
 680
 681         /* When the while loop ends, it's usually just EOF. */
 682         err = ERR_peek_last_error();
 683         if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
 684             ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
 685                 ERR_clear_error();
 686                 ret = 1;
 687         }
 688
 689  err:
 690         X509_free(x);
 691
 692         return (ret);
 693 }
 694
 695 int
 696 ssl_use_certificate_chain_file(SSL_CTX *ctx, SSL *ssl, const char *file)
 697 {
 698         BIO *in;
 699         int ret = 0;
 700
 701         in = BIO_new(BIO_s_file());
 702         if (in == NULL) {
 703                 SSLerrorx(ERR_R_BUF_LIB);
 704                 goto end;
 705         }
 706
 707         if (BIO_read_filename(in, file) <= 0) {
 708                 SSLerrorx(ERR_R_SYS_LIB);
 709                 goto end;
 710         }
 711
 712         ret = ssl_use_certificate_chain_bio(ctx, ssl, in);
 713
 714  end:
 715         BIO_free(in);
 716         return (ret);
 717 }
 718
 719 int
 720 SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file)
 721 {
 722         return ssl_use_certificate_chain_file(ctx, NULL, file);
 723 }
 724
 725 int
 726 SSL_use_certificate_chain_file(SSL *ssl, const char *file)
 727 {
 728         return ssl_use_certificate_chain_file(NULL, ssl, file);
 729 }
 730
 731 int
 732 SSL_CTX_use_certificate_chain_mem(SSL_CTX *ctx, void *buf, int len)
 733 {
 734         BIO *in;
 735         int ret = 0;
 736
 737         in = BIO_new_mem_buf(buf, len);
 738         if (in == NULL) {
 739                 SSLerrorx(ERR_R_BUF_LIB);
 740                 goto end;
 741         }
 742
 743         ret = ssl_use_certificate_chain_bio(ctx, NULL, in);
 744
 745  end:
 746         BIO_free(in);
 747         return (ret);
 748 }