1 /* 2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include "ssl_local.h" 12 #include "packet_local.h" 13 #include <openssl/bio.h> 14 #include <openssl/objects.h> 15 #include <openssl/evp.h> 16 #include <openssl/x509.h> 17 #include <openssl/pem.h> 18 19 static int ssl_set_cert(CERT *c, X509 *x509); 20 static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey); 21 22 #define SYNTHV1CONTEXT (SSL_EXT_TLS1_2_AND_BELOW_ONLY \ 23 | SSL_EXT_CLIENT_HELLO \ 24 | SSL_EXT_TLS1_2_SERVER_HELLO \ 25 | SSL_EXT_IGNORE_ON_RESUMPTION) 26 27 int SSL_use_certificate(SSL *ssl, X509 *x) 28 { 29 int rv; 30 if (x == NULL) { 31 SSLerr(SSL_F_SSL_USE_CERTIFICATE, ERR_R_PASSED_NULL_PARAMETER); 32 return 0; 33 } 34 rv = ssl_security_cert(ssl, NULL, x, 0, 1); 35 if (rv != 1) { 36 SSLerr(SSL_F_SSL_USE_CERTIFICATE, rv); 37 return 0; 38 } 39 40 return ssl_set_cert(ssl->cert, x); 41 } 42 43 int SSL_use_certificate_file(SSL *ssl, const char *file, int type) 44 { 45 int j; 46 BIO *in; 47 int ret = 0; 48 X509 *x = NULL; 49 50 in = BIO_new(BIO_s_file()); 51 if (in == NULL) { 52 SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB); 53 goto end; 54 } 55 56 if (BIO_read_filename(in, file) <= 0) { 57 SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, ERR_R_SYS_LIB); 58 goto end; 59 } 60 if (type == SSL_FILETYPE_ASN1) { 61 j = ERR_R_ASN1_LIB; 62 x = d2i_X509_bio(in, NULL); 63 } else if (type == SSL_FILETYPE_PEM) { 64 j = ERR_R_PEM_LIB; 65 x = PEM_read_bio_X509(in, NULL, ssl->default_passwd_callback, 66 ssl->default_passwd_callback_userdata); 67 } else { 68 SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, SSL_R_BAD_SSL_FILETYPE); 69 goto end; 70 } 71 72 if (x == NULL) { 73 SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, j); 74 goto end; 75 } 76 77 ret = SSL_use_certificate(ssl, x); 78 end: 79 X509_free(x); 80 BIO_free(in); 81 return ret; 82 } 83 84 int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len) 85 { 86 X509 *x; 87 int ret; 88 89 x = d2i_X509(NULL, &d, (long)len); 90 if (x == NULL) { 91 SSLerr(SSL_F_SSL_USE_CERTIFICATE_ASN1, ERR_R_ASN1_LIB); 92 return 0; 93 } 94 95 ret = SSL_use_certificate(ssl, x); 96 X509_free(x); 97 return ret; 98 } 99 100 #ifndef OPENSSL_NO_RSA 101 int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa) 102 { 103 EVP_PKEY *pkey; 104 int ret; 105 106 if (rsa == NULL) { 107 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER); 108 return 0; 109 } 110 if ((pkey = EVP_PKEY_new()) == NULL) { 111 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY, ERR_R_EVP_LIB); 112 return 0; 113 } 114 115 RSA_up_ref(rsa); 116 if (EVP_PKEY_assign_RSA(pkey, rsa) <= 0) { 117 RSA_free(rsa); 118 EVP_PKEY_free(pkey); 119 return 0; 120 } 121 122 ret = ssl_set_pkey(ssl->cert, pkey); 123 EVP_PKEY_free(pkey); 124 return ret; 125 } 126 #endif 127 128 static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey) 129 { 130 size_t i; 131 132 if (ssl_cert_lookup_by_pkey(pkey, &i) == NULL) { 133 SSLerr(SSL_F_SSL_SET_PKEY, SSL_R_UNKNOWN_CERTIFICATE_TYPE); 134 return 0; 135 } 136 137 if (c->pkeys[i].x509 != NULL) { 138 EVP_PKEY *pktmp; 139 pktmp = X509_get0_pubkey(c->pkeys[i].x509); 140 if (pktmp == NULL) { 141 SSLerr(SSL_F_SSL_SET_PKEY, ERR_R_MALLOC_FAILURE); 142 return 0; 143 } 144 /* 145 * The return code from EVP_PKEY_copy_parameters is deliberately 146 * ignored. Some EVP_PKEY types cannot do this. 147 */ 148 EVP_PKEY_copy_parameters(pktmp, pkey); 149 ERR_clear_error(); 150 151 if (!X509_check_private_key(c->pkeys[i].x509, pkey)) { 152 X509_free(c->pkeys[i].x509); 153 c->pkeys[i].x509 = NULL; 154 return 0; 155 } 156 } 157 158 EVP_PKEY_free(c->pkeys[i].privatekey); 159 EVP_PKEY_up_ref(pkey); 160 c->pkeys[i].privatekey = pkey; 161 c->key = &c->pkeys[i]; 162 return 1; 163 } 164 165 #ifndef OPENSSL_NO_RSA 166 int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type) 167 { 168 int j, ret = 0; 169 BIO *in; 170 RSA *rsa = NULL; 171 172 in = BIO_new(BIO_s_file()); 173 if (in == NULL) { 174 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, ERR_R_BUF_LIB); 175 goto end; 176 } 177 178 if (BIO_read_filename(in, file) <= 0) { 179 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, ERR_R_SYS_LIB); 180 goto end; 181 } 182 if (type == SSL_FILETYPE_ASN1) { 183 j = ERR_R_ASN1_LIB; 184 rsa = d2i_RSAPrivateKey_bio(in, NULL); 185 } else if (type == SSL_FILETYPE_PEM) { 186 j = ERR_R_PEM_LIB; 187 rsa = PEM_read_bio_RSAPrivateKey(in, NULL, 188 ssl->default_passwd_callback, 189 ssl->default_passwd_callback_userdata); 190 } else { 191 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE); 192 goto end; 193 } 194 if (rsa == NULL) { 195 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, j); 196 goto end; 197 } 198 ret = SSL_use_RSAPrivateKey(ssl, rsa); 199 RSA_free(rsa); 200 end: 201 BIO_free(in); 202 return ret; 203 } 204 205 int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d, long len) 206 { 207 int ret; 208 const unsigned char *p; 209 RSA *rsa; 210 211 p = d; 212 if ((rsa = d2i_RSAPrivateKey(NULL, &p, (long)len)) == NULL) { 213 SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1, ERR_R_ASN1_LIB); 214 return 0; 215 } 216 217 ret = SSL_use_RSAPrivateKey(ssl, rsa); 218 RSA_free(rsa); 219 return ret; 220 } 221 #endif /* !OPENSSL_NO_RSA */ 222 223 int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey) 224 { 225 int ret; 226 227 if (pkey == NULL) { 228 SSLerr(SSL_F_SSL_USE_PRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER); 229 return 0; 230 } 231 ret = ssl_set_pkey(ssl->cert, pkey); 232 return ret; 233 } 234 235 int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type) 236 { 237 int j, ret = 0; 238 BIO *in; 239 EVP_PKEY *pkey = NULL; 240 241 in = BIO_new(BIO_s_file()); 242 if (in == NULL) { 243 SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB); 244 goto end; 245 } 246 247 if (BIO_read_filename(in, file) <= 0) { 248 SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, ERR_R_SYS_LIB); 249 goto end; 250 } 251 if (type == SSL_FILETYPE_PEM) { 252 j = ERR_R_PEM_LIB; 253 pkey = PEM_read_bio_PrivateKey(in, NULL, 254 ssl->default_passwd_callback, 255 ssl->default_passwd_callback_userdata); 256 } else if (type == SSL_FILETYPE_ASN1) { 257 j = ERR_R_ASN1_LIB; 258 pkey = d2i_PrivateKey_bio(in, NULL); 259 } else { 260 SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE); 261 goto end; 262 } 263 if (pkey == NULL) { 264 SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, j); 265 goto end; 266 } 267 ret = SSL_use_PrivateKey(ssl, pkey); 268 EVP_PKEY_free(pkey); 269 end: 270 BIO_free(in); 271 return ret; 272 } 273 274 int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d, 275 long len) 276 { 277 int ret; 278 const unsigned char *p; 279 EVP_PKEY *pkey; 280 281 p = d; 282 if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) { 283 SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB); 284 return 0; 285 } 286 287 ret = SSL_use_PrivateKey(ssl, pkey); 288 EVP_PKEY_free(pkey); 289 return ret; 290 } 291 292 int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) 293 { 294 int rv; 295 if (x == NULL) { 296 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, ERR_R_PASSED_NULL_PARAMETER); 297 return 0; 298 } 299 rv = ssl_security_cert(NULL, ctx, x, 0, 1); 300 if (rv != 1) { 301 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, rv); 302 return 0; 303 } 304 return ssl_set_cert(ctx->cert, x); 305 } 306 307 static int ssl_set_cert(CERT *c, X509 *x) 308 { 309 EVP_PKEY *pkey; 310 size_t i; 311 312 pkey = X509_get0_pubkey(x); 313 if (pkey == NULL) { 314 SSLerr(SSL_F_SSL_SET_CERT, SSL_R_X509_LIB); 315 return 0; 316 } 317 318 if (ssl_cert_lookup_by_pkey(pkey, &i) == NULL) { 319 SSLerr(SSL_F_SSL_SET_CERT, SSL_R_UNKNOWN_CERTIFICATE_TYPE); 320 return 0; 321 } 322 #ifndef OPENSSL_NO_EC 323 if (i == SSL_PKEY_ECC && !EC_KEY_can_sign(EVP_PKEY_get0_EC_KEY(pkey))) { 324 SSLerr(SSL_F_SSL_SET_CERT, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 325 return 0; 326 } 327 #endif 328 if (c->pkeys[i].privatekey != NULL) { 329 /* 330 * The return code from EVP_PKEY_copy_parameters is deliberately 331 * ignored. Some EVP_PKEY types cannot do this. 332 */ 333 EVP_PKEY_copy_parameters(pkey, c->pkeys[i].privatekey); 334 ERR_clear_error(); 335 336 if (!X509_check_private_key(x, c->pkeys[i].privatekey)) { 337 /* 338 * don't fail for a cert/key mismatch, just free current private 339 * key (when switching to a different cert & key, first this 340 * function should be used, then ssl_set_pkey 341 */ 342 EVP_PKEY_free(c->pkeys[i].privatekey); 343 c->pkeys[i].privatekey = NULL; 344 /* clear error queue */ 345 ERR_clear_error(); 346 } 347 } 348 349 X509_free(c->pkeys[i].x509); 350 X509_up_ref(x); 351 c->pkeys[i].x509 = x; 352 c->key = &(c->pkeys[i]); 353 354 return 1; 355 } 356 357 int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type) 358 { 359 int j; 360 BIO *in; 361 int ret = 0; 362 X509 *x = NULL; 363 364 in = BIO_new(BIO_s_file()); 365 if (in == NULL) { 366 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB); 367 goto end; 368 } 369 370 if (BIO_read_filename(in, file) <= 0) { 371 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_SYS_LIB); 372 goto end; 373 } 374 if (type == SSL_FILETYPE_ASN1) { 375 j = ERR_R_ASN1_LIB; 376 x = d2i_X509_bio(in, NULL); 377 } else if (type == SSL_FILETYPE_PEM) { 378 j = ERR_R_PEM_LIB; 379 x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback, 380 ctx->default_passwd_callback_userdata); 381 } else { 382 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, SSL_R_BAD_SSL_FILETYPE); 383 goto end; 384 } 385 386 if (x == NULL) { 387 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, j); 388 goto end; 389 } 390 391 ret = SSL_CTX_use_certificate(ctx, x); 392 end: 393 X509_free(x); 394 BIO_free(in); 395 return ret; 396 } 397 398 int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d) 399 { 400 X509 *x; 401 int ret; 402 403 x = d2i_X509(NULL, &d, (long)len); 404 if (x == NULL) { 405 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1, ERR_R_ASN1_LIB); 406 return 0; 407 } 408 409 ret = SSL_CTX_use_certificate(ctx, x); 410 X509_free(x); 411 return ret; 412 } 413 414 #ifndef OPENSSL_NO_RSA 415 int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa) 416 { 417 int ret; 418 EVP_PKEY *pkey; 419 420 if (rsa == NULL) { 421 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER); 422 return 0; 423 } 424 if ((pkey = EVP_PKEY_new()) == NULL) { 425 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY, ERR_R_EVP_LIB); 426 return 0; 427 } 428 429 RSA_up_ref(rsa); 430 if (EVP_PKEY_assign_RSA(pkey, rsa) <= 0) { 431 RSA_free(rsa); 432 EVP_PKEY_free(pkey); 433 return 0; 434 } 435 436 ret = ssl_set_pkey(ctx->cert, pkey); 437 EVP_PKEY_free(pkey); 438 return ret; 439 } 440 441 int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type) 442 { 443 int j, ret = 0; 444 BIO *in; 445 RSA *rsa = NULL; 446 447 in = BIO_new(BIO_s_file()); 448 if (in == NULL) { 449 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, ERR_R_BUF_LIB); 450 goto end; 451 } 452 453 if (BIO_read_filename(in, file) <= 0) { 454 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, ERR_R_SYS_LIB); 455 goto end; 456 } 457 if (type == SSL_FILETYPE_ASN1) { 458 j = ERR_R_ASN1_LIB; 459 rsa = d2i_RSAPrivateKey_bio(in, NULL); 460 } else if (type == SSL_FILETYPE_PEM) { 461 j = ERR_R_PEM_LIB; 462 rsa = PEM_read_bio_RSAPrivateKey(in, NULL, 463 ctx->default_passwd_callback, 464 ctx->default_passwd_callback_userdata); 465 } else { 466 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE); 467 goto end; 468 } 469 if (rsa == NULL) { 470 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, j); 471 goto end; 472 } 473 ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa); 474 RSA_free(rsa); 475 end: 476 BIO_free(in); 477 return ret; 478 } 479 480 int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d, 481 long len) 482 { 483 int ret; 484 const unsigned char *p; 485 RSA *rsa; 486 487 p = d; 488 if ((rsa = d2i_RSAPrivateKey(NULL, &p, (long)len)) == NULL) { 489 SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1, ERR_R_ASN1_LIB); 490 return 0; 491 } 492 493 ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa); 494 RSA_free(rsa); 495 return ret; 496 } 497 #endif /* !OPENSSL_NO_RSA */ 498 499 int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey) 500 { 501 if (pkey == NULL) { 502 SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER); 503 return 0; 504 } 505 return ssl_set_pkey(ctx->cert, pkey); 506 } 507 508 int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type) 509 { 510 int j, ret = 0; 511 BIO *in; 512 EVP_PKEY *pkey = NULL; 513 514 in = BIO_new(BIO_s_file()); 515 if (in == NULL) { 516 SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB); 517 goto end; 518 } 519 520 if (BIO_read_filename(in, file) <= 0) { 521 SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_SYS_LIB); 522 goto end; 523 } 524 if (type == SSL_FILETYPE_PEM) { 525 j = ERR_R_PEM_LIB; 526 pkey = PEM_read_bio_PrivateKey(in, NULL, 527 ctx->default_passwd_callback, 528 ctx->default_passwd_callback_userdata); 529 } else if (type == SSL_FILETYPE_ASN1) { 530 j = ERR_R_ASN1_LIB; 531 pkey = d2i_PrivateKey_bio(in, NULL); 532 } else { 533 SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE); 534 goto end; 535 } 536 if (pkey == NULL) { 537 SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, j); 538 goto end; 539 } 540 ret = SSL_CTX_use_PrivateKey(ctx, pkey); 541 EVP_PKEY_free(pkey); 542 end: 543 BIO_free(in); 544 return ret; 545 } 546 547 int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, 548 const unsigned char *d, long len) 549 { 550 int ret; 551 const unsigned char *p; 552 EVP_PKEY *pkey; 553 554 p = d; 555 if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) { 556 SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB); 557 return 0; 558 } 559 560 ret = SSL_CTX_use_PrivateKey(ctx, pkey); 561 EVP_PKEY_free(pkey); 562 return ret; 563 } 564 565 /* 566 * Read a file that contains our certificate in "PEM" format, possibly 567 * followed by a sequence of CA certificates that should be sent to the peer 568 * in the Certificate message. 569 */ 570 static int use_certificate_chain_file(SSL_CTX *ctx, SSL *ssl, const char *file) 571 { 572 BIO *in; 573 int ret = 0; 574 X509 *x = NULL; 575 pem_password_cb *passwd_callback; 576 void *passwd_callback_userdata; 577 578 ERR_clear_error(); /* clear error stack for 579 * SSL_CTX_use_certificate() */ 580 581 if (ctx != NULL) { 582 passwd_callback = ctx->default_passwd_callback; 583 passwd_callback_userdata = ctx->default_passwd_callback_userdata; 584 } else { 585 passwd_callback = ssl->default_passwd_callback; 586 passwd_callback_userdata = ssl->default_passwd_callback_userdata; 587 } 588 589 in = BIO_new(BIO_s_file()); 590 if (in == NULL) { 591 SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_BUF_LIB); 592 goto end; 593 } 594 595 if (BIO_read_filename(in, file) <= 0) { 596 SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_SYS_LIB); 597 goto end; 598 } 599 600 x = PEM_read_bio_X509_AUX(in, NULL, passwd_callback, 601 passwd_callback_userdata); 602 if (x == NULL) { 603 SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB); 604 goto end; 605 } 606 607 if (ctx) 608 ret = SSL_CTX_use_certificate(ctx, x); 609 else 610 ret = SSL_use_certificate(ssl, x); 611 612 if (ERR_peek_error() != 0) 613 ret = 0; /* Key/certificate mismatch doesn't imply 614 * ret==0 ... */ 615 if (ret) { 616 /* 617 * If we could set up our certificate, now proceed to the CA 618 * certificates. 619 */ 620 X509 *ca; 621 int r; 622 unsigned long err; 623 624 if (ctx) 625 r = SSL_CTX_clear_chain_certs(ctx); 626 else 627 r = SSL_clear_chain_certs(ssl); 628 629 if (r == 0) { 630 ret = 0; 631 goto end; 632 } 633 634 while ((ca = PEM_read_bio_X509(in, NULL, passwd_callback, 635 passwd_callback_userdata)) 636 != NULL) { 637 if (ctx) 638 r = SSL_CTX_add0_chain_cert(ctx, ca); 639 else 640 r = SSL_add0_chain_cert(ssl, ca); 641 /* 642 * Note that we must not free ca if it was successfully added to 643 * the chain (while we must free the main certificate, since its 644 * reference count is increased by SSL_CTX_use_certificate). 645 */ 646 if (!r) { 647 X509_free(ca); 648 ret = 0; 649 goto end; 650 } 651 } 652 /* When the while loop ends, it's usually just EOF. */ 653 err = ERR_peek_last_error(); 654 if (ERR_GET_LIB(err) == ERR_LIB_PEM 655 && ERR_GET_REASON(err) == PEM_R_NO_START_LINE) 656 ERR_clear_error(); 657 else 658 ret = 0; /* some real error */ 659 } 660 661 end: 662 X509_free(x); 663 BIO_free(in); 664 return ret; 665 } 666 667 int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file) 668 { 669 return use_certificate_chain_file(ctx, NULL, file); 670 } 671 672 int SSL_use_certificate_chain_file(SSL *ssl, const char *file) 673 { 674 return use_certificate_chain_file(NULL, ssl, file); 675 } 676 677 static int serverinfo_find_extension(const unsigned char *serverinfo, 678 size_t serverinfo_length, 679 unsigned int extension_type, 680 const unsigned char **extension_data, 681 size_t *extension_length) 682 { 683 PACKET pkt, data; 684 685 *extension_data = NULL; 686 *extension_length = 0; 687 if (serverinfo == NULL || serverinfo_length == 0) 688 return -1; 689 690 if (!PACKET_buf_init(&pkt, serverinfo, serverinfo_length)) 691 return -1; 692 693 for (;;) { 694 unsigned int type = 0; 695 unsigned long context = 0; 696 697 /* end of serverinfo */ 698 if (PACKET_remaining(&pkt) == 0) 699 return 0; /* Extension not found */ 700 701 if (!PACKET_get_net_4(&pkt, &context) 702 || !PACKET_get_net_2(&pkt, &type) 703 || !PACKET_get_length_prefixed_2(&pkt, &data)) 704 return -1; 705 706 if (type == extension_type) { 707 *extension_data = PACKET_data(&data); 708 *extension_length = PACKET_remaining(&data);; 709 return 1; /* Success */ 710 } 711 } 712 /* Unreachable */ 713 } 714 715 static int serverinfoex_srv_parse_cb(SSL *s, unsigned int ext_type, 716 unsigned int context, 717 const unsigned char *in, 718 size_t inlen, X509 *x, size_t chainidx, 719 int *al, void *arg) 720 { 721 722 if (inlen != 0) { 723 *al = SSL_AD_DECODE_ERROR; 724 return 0; 725 } 726 727 return 1; 728 } 729 730 static size_t extension_contextoff(unsigned int version) 731 { 732 return version == SSL_SERVERINFOV1 ? 4 : 0; 733 } 734 735 static size_t extension_append_length(unsigned int version, size_t extension_length) 736 { 737 return extension_length + extension_contextoff(version); 738 } 739 740 static void extension_append(unsigned int version, 741 const unsigned char *extension, 742 const size_t extension_length, 743 unsigned char *serverinfo) 744 { 745 const size_t contextoff = extension_contextoff(version); 746 747 if (contextoff > 0) { 748 /* We know this only uses the last 2 bytes */ 749 serverinfo[0] = 0; 750 serverinfo[1] = 0; 751 serverinfo[2] = (SYNTHV1CONTEXT >> 8) & 0xff; 752 serverinfo[3] = SYNTHV1CONTEXT & 0xff; 753 } 754 755 memcpy(serverinfo + contextoff, extension, extension_length); 756 } 757 758 static int serverinfo_srv_parse_cb(SSL *s, unsigned int ext_type, 759 const unsigned char *in, 760 size_t inlen, int *al, void *arg) 761 { 762 return serverinfoex_srv_parse_cb(s, ext_type, 0, in, inlen, NULL, 0, al, 763 arg); 764 } 765 766 static int serverinfoex_srv_add_cb(SSL *s, unsigned int ext_type, 767 unsigned int context, 768 const unsigned char **out, 769 size_t *outlen, X509 *x, size_t chainidx, 770 int *al, void *arg) 771 { 772 const unsigned char *serverinfo = NULL; 773 size_t serverinfo_length = 0; 774 775 /* We only support extensions for the first Certificate */ 776 if ((context & SSL_EXT_TLS1_3_CERTIFICATE) != 0 && chainidx > 0) 777 return 0; 778 779 /* Is there serverinfo data for the chosen server cert? */ 780 if ((ssl_get_server_cert_serverinfo(s, &serverinfo, 781 &serverinfo_length)) != 0) { 782 /* Find the relevant extension from the serverinfo */ 783 int retval = serverinfo_find_extension(serverinfo, serverinfo_length, 784 ext_type, out, outlen); 785 if (retval == -1) { 786 *al = SSL_AD_INTERNAL_ERROR; 787 return -1; /* Error */ 788 } 789 if (retval == 0) 790 return 0; /* No extension found, don't send extension */ 791 return 1; /* Send extension */ 792 } 793 return 0; /* No serverinfo data found, don't send 794 * extension */ 795 } 796 797 static int serverinfo_srv_add_cb(SSL *s, unsigned int ext_type, 798 const unsigned char **out, size_t *outlen, 799 int *al, void *arg) 800 { 801 return serverinfoex_srv_add_cb(s, ext_type, 0, out, outlen, NULL, 0, al, 802 arg); 803 } 804 805 /* 806 * With a NULL context, this function just checks that the serverinfo data 807 * parses correctly. With a non-NULL context, it registers callbacks for 808 * the included extensions. 809 */ 810 static int serverinfo_process_buffer(unsigned int version, 811 const unsigned char *serverinfo, 812 size_t serverinfo_length, SSL_CTX *ctx) 813 { 814 PACKET pkt; 815 816 if (serverinfo == NULL || serverinfo_length == 0) 817 return 0; 818 819 if (version != SSL_SERVERINFOV1 && version != SSL_SERVERINFOV2) 820 return 0; 821 822 if (!PACKET_buf_init(&pkt, serverinfo, serverinfo_length)) 823 return 0; 824 825 while (PACKET_remaining(&pkt)) { 826 unsigned long context = 0; 827 unsigned int ext_type = 0; 828 PACKET data; 829 830 if ((version == SSL_SERVERINFOV2 && !PACKET_get_net_4(&pkt, &context)) 831 || !PACKET_get_net_2(&pkt, &ext_type) 832 || !PACKET_get_length_prefixed_2(&pkt, &data)) 833 return 0; 834 835 if (ctx == NULL) 836 continue; 837 838 /* 839 * The old style custom extensions API could be set separately for 840 * server/client, i.e. you could set one custom extension for a client, 841 * and *for the same extension in the same SSL_CTX* you could set a 842 * custom extension for the server as well. It seems quite weird to be 843 * setting a custom extension for both client and server in a single 844 * SSL_CTX - but theoretically possible. This isn't possible in the 845 * new API. Therefore, if we have V1 serverinfo we use the old API. We 846 * also use the old API even if we have V2 serverinfo but the context 847 * looks like an old style <= TLSv1.2 extension. 848 */ 849 if (version == SSL_SERVERINFOV1 || context == SYNTHV1CONTEXT) { 850 if (!SSL_CTX_add_server_custom_ext(ctx, ext_type, 851 serverinfo_srv_add_cb, 852 NULL, NULL, 853 serverinfo_srv_parse_cb, 854 NULL)) 855 return 0; 856 } else { 857 if (!SSL_CTX_add_custom_ext(ctx, ext_type, context, 858 serverinfoex_srv_add_cb, 859 NULL, NULL, 860 serverinfoex_srv_parse_cb, 861 NULL)) 862 return 0; 863 } 864 } 865 866 return 1; 867 } 868 869 int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version, 870 const unsigned char *serverinfo, 871 size_t serverinfo_length) 872 { 873 unsigned char *new_serverinfo = NULL; 874 875 if (ctx == NULL || serverinfo == NULL || serverinfo_length == 0) { 876 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_PASSED_NULL_PARAMETER); 877 return 0; 878 } 879 if (version == SSL_SERVERINFOV1) { 880 /* 881 * Convert serverinfo version v1 to v2 and call yourself recursively 882 * over the converted serverinfo. 883 */ 884 const size_t sinfo_length = extension_append_length(SSL_SERVERINFOV1, 885 serverinfo_length); 886 unsigned char *sinfo; 887 int ret; 888 889 sinfo = OPENSSL_malloc(sinfo_length); 890 if (sinfo == NULL) { 891 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_MALLOC_FAILURE); 892 return 0; 893 } 894 895 extension_append(SSL_SERVERINFOV1, serverinfo, serverinfo_length, sinfo); 896 897 ret = SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV2, sinfo, 898 sinfo_length); 899 900 OPENSSL_free(sinfo); 901 return ret; 902 } 903 if (!serverinfo_process_buffer(version, serverinfo, serverinfo_length, 904 NULL)) { 905 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, SSL_R_INVALID_SERVERINFO_DATA); 906 return 0; 907 } 908 if (ctx->cert->key == NULL) { 909 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_INTERNAL_ERROR); 910 return 0; 911 } 912 new_serverinfo = OPENSSL_realloc(ctx->cert->key->serverinfo, 913 serverinfo_length); 914 if (new_serverinfo == NULL) { 915 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_MALLOC_FAILURE); 916 return 0; 917 } 918 ctx->cert->key->serverinfo = new_serverinfo; 919 memcpy(ctx->cert->key->serverinfo, serverinfo, serverinfo_length); 920 ctx->cert->key->serverinfo_length = serverinfo_length; 921 922 /* 923 * Now that the serverinfo is validated and stored, go ahead and 924 * register callbacks. 925 */ 926 if (!serverinfo_process_buffer(version, serverinfo, serverinfo_length, 927 ctx)) { 928 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, SSL_R_INVALID_SERVERINFO_DATA); 929 return 0; 930 } 931 return 1; 932 } 933 934 int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo, 935 size_t serverinfo_length) 936 { 937 return SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV1, serverinfo, 938 serverinfo_length); 939 } 940 941 int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file) 942 { 943 unsigned char *serverinfo = NULL; 944 unsigned char *tmp; 945 size_t serverinfo_length = 0; 946 unsigned char *extension = 0; 947 long extension_length = 0; 948 char *name = NULL; 949 char *header = NULL; 950 char namePrefix1[] = "SERVERINFO FOR "; 951 char namePrefix2[] = "SERVERINFOV2 FOR "; 952 int ret = 0; 953 BIO *bin = NULL; 954 size_t num_extensions = 0; 955 956 if (ctx == NULL || file == NULL) { 957 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_PASSED_NULL_PARAMETER); 958 goto end; 959 } 960 961 bin = BIO_new(BIO_s_file()); 962 if (bin == NULL) { 963 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_BUF_LIB); 964 goto end; 965 } 966 if (BIO_read_filename(bin, file) <= 0) { 967 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_SYS_LIB); 968 goto end; 969 } 970 971 for (num_extensions = 0;; num_extensions++) { 972 unsigned int version; 973 size_t append_length; 974 975 if (PEM_read_bio(bin, &name, &header, &extension, &extension_length) 976 == 0) { 977 /* 978 * There must be at least one extension in this file 979 */ 980 if (num_extensions == 0) { 981 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, 982 SSL_R_NO_PEM_EXTENSIONS); 983 goto end; 984 } else /* End of file, we're done */ 985 break; 986 } 987 /* Check that PEM name starts with "BEGIN SERVERINFO FOR " */ 988 if (strlen(name) < strlen(namePrefix1)) { 989 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_TOO_SHORT); 990 goto end; 991 } 992 if (strncmp(name, namePrefix1, strlen(namePrefix1)) == 0) { 993 version = SSL_SERVERINFOV1; 994 } else { 995 if (strlen(name) < strlen(namePrefix2)) { 996 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, 997 SSL_R_PEM_NAME_TOO_SHORT); 998 goto end; 999 } 1000 if (strncmp(name, namePrefix2, strlen(namePrefix2)) != 0) { 1001 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, 1002 SSL_R_PEM_NAME_BAD_PREFIX); 1003 goto end; 1004 } 1005 version = SSL_SERVERINFOV2; 1006 } 1007 /* 1008 * Check that the decoded PEM data is plausible (valid length field) 1009 */ 1010 if (version == SSL_SERVERINFOV1) { 1011 /* 4 byte header: 2 bytes type, 2 bytes len */ 1012 if (extension_length < 4 1013 || (extension[2] << 8) + extension[3] 1014 != extension_length - 4) { 1015 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA); 1016 goto end; 1017 } 1018 } else { 1019 /* 8 byte header: 4 bytes context, 2 bytes type, 2 bytes len */ 1020 if (extension_length < 8 1021 || (extension[6] << 8) + extension[7] 1022 != extension_length - 8) { 1023 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA); 1024 goto end; 1025 } 1026 } 1027 /* Append the decoded extension to the serverinfo buffer */ 1028 append_length = extension_append_length(version, extension_length); 1029 tmp = OPENSSL_realloc(serverinfo, serverinfo_length + append_length); 1030 if (tmp == NULL) { 1031 SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_MALLOC_FAILURE); 1032 goto end; 1033 } 1034 serverinfo = tmp; 1035 extension_append(version, extension, extension_length, 1036 serverinfo + serverinfo_length); 1037 serverinfo_length += append_length; 1038 1039 OPENSSL_free(name); 1040 name = NULL; 1041 OPENSSL_free(header); 1042 header = NULL; 1043 OPENSSL_free(extension); 1044 extension = NULL; 1045 } 1046 1047 ret = SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV2, serverinfo, 1048 serverinfo_length); 1049 end: 1050 /* SSL_CTX_use_serverinfo makes a local copy of the serverinfo. */ 1051 OPENSSL_free(name); 1052 OPENSSL_free(header); 1053 OPENSSL_free(extension); 1054 OPENSSL_free(serverinfo); 1055 BIO_free(bin); 1056 return ret; 1057 } 1058 1059 static int ssl_set_cert_and_key(SSL *ssl, SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey, 1060 STACK_OF(X509) *chain, int override) 1061 { 1062 int ret = 0; 1063 size_t i; 1064 int j; 1065 int rv; 1066 CERT *c = ssl != NULL ? ssl->cert : ctx->cert; 1067 STACK_OF(X509) *dup_chain = NULL; 1068 EVP_PKEY *pubkey = NULL; 1069 1070 /* Do all security checks before anything else */ 1071 rv = ssl_security_cert(ssl, ctx, x509, 0, 1); 1072 if (rv != 1) { 1073 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, rv); 1074 goto out; 1075 } 1076 for (j = 0; j < sk_X509_num(chain); j++) { 1077 rv = ssl_security_cert(ssl, ctx, sk_X509_value(chain, j), 0, 0); 1078 if (rv != 1) { 1079 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, rv); 1080 goto out; 1081 } 1082 } 1083 1084 pubkey = X509_get_pubkey(x509); /* bumps reference */ 1085 if (pubkey == NULL) 1086 goto out; 1087 if (privatekey == NULL) { 1088 privatekey = pubkey; 1089 } else { 1090 /* For RSA, which has no parameters, missing returns 0 */ 1091 if (EVP_PKEY_missing_parameters(privatekey)) { 1092 if (EVP_PKEY_missing_parameters(pubkey)) { 1093 /* nobody has parameters? - error */ 1094 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_MISSING_PARAMETERS); 1095 goto out; 1096 } else { 1097 /* copy to privatekey from pubkey */ 1098 EVP_PKEY_copy_parameters(privatekey, pubkey); 1099 } 1100 } else if (EVP_PKEY_missing_parameters(pubkey)) { 1101 /* copy to pubkey from privatekey */ 1102 EVP_PKEY_copy_parameters(pubkey, privatekey); 1103 } /* else both have parameters */ 1104 1105 /* check that key <-> cert match */ 1106 if (EVP_PKEY_cmp(pubkey, privatekey) != 1) { 1107 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_PRIVATE_KEY_MISMATCH); 1108 goto out; 1109 } 1110 } 1111 if (ssl_cert_lookup_by_pkey(pubkey, &i) == NULL) { 1112 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_UNKNOWN_CERTIFICATE_TYPE); 1113 goto out; 1114 } 1115 1116 if (!override && (c->pkeys[i].x509 != NULL 1117 || c->pkeys[i].privatekey != NULL 1118 || c->pkeys[i].chain != NULL)) { 1119 /* No override, and something already there */ 1120 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_NOT_REPLACING_CERTIFICATE); 1121 goto out; 1122 } 1123 1124 if (chain != NULL) { 1125 dup_chain = X509_chain_up_ref(chain); 1126 if (dup_chain == NULL) { 1127 SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, ERR_R_MALLOC_FAILURE); 1128 goto out; 1129 } 1130 } 1131 1132 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 1133 c->pkeys[i].chain = dup_chain; 1134 1135 X509_free(c->pkeys[i].x509); 1136 X509_up_ref(x509); 1137 c->pkeys[i].x509 = x509; 1138 1139 EVP_PKEY_free(c->pkeys[i].privatekey); 1140 EVP_PKEY_up_ref(privatekey); 1141 c->pkeys[i].privatekey = privatekey; 1142 1143 c->key = &(c->pkeys[i]); 1144 1145 ret = 1; 1146 out: 1147 EVP_PKEY_free(pubkey); 1148 return ret; 1149 } 1150 1151 int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey, 1152 STACK_OF(X509) *chain, int override) 1153 { 1154 return ssl_set_cert_and_key(ssl, NULL, x509, privatekey, chain, override); 1155 } 1156 1157 int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey, 1158 STACK_OF(X509) *chain, int override) 1159 { 1160 return ssl_set_cert_and_key(NULL, ctx, x509, privatekey, chain, override); 1161 } 1162
Indexes created Sun Mar 01 05:31:48 UTC 2026