1/* 2 * Copyright 1995-2021 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/* callback functions used by s_client, s_server, and s_time */ 11#include <stdio.h> 12#include <stdlib.h> 13#include <string.h> /* for memcpy() and strcmp() */ 14#include "apps.h" 15#include <openssl/err.h> 16#include <openssl/rand.h> 17#include <openssl/x509.h> 18#include <openssl/ssl.h> 19#include <openssl/bn.h> 20#ifndef OPENSSL_NO_DH 21# include <openssl/dh.h> 22#endif 23#include "s_apps.h" 24 25#define COOKIE_SECRET_LENGTH 16 26 27VERIFY_CB_ARGS verify_args = { -1, 0, X509_V_OK, 0 }; 28 29#ifndef OPENSSL_NO_SOCK 30static unsigned char cookie_secret[COOKIE_SECRET_LENGTH]; 31static int cookie_initialized = 0; 32#endif 33static BIO *bio_keylog = NULL; 34 35static const char *lookup(int val, const STRINT_PAIR* list, const char* def) 36{ 37 for ( ; list->name; ++list) 38 if (list->retval == val) 39 return list->name; 40 return def; 41} 42 43int verify_callback(int ok, X509_STORE_CTX *ctx) 44{ 45 X509 *err_cert; 46 int err, depth; 47 48 err_cert = X509_STORE_CTX_get_current_cert(ctx); 49 err = X509_STORE_CTX_get_error(ctx); 50 depth = X509_STORE_CTX_get_error_depth(ctx); 51 52 if (!verify_args.quiet || !ok) { 53 BIO_printf(bio_err, "depth=%d ", depth); 54 if (err_cert != NULL) { 55 X509_NAME_print_ex(bio_err, 56 X509_get_subject_name(err_cert), 57 0, get_nameopt()); 58 BIO_puts(bio_err, "\n"); 59 } else { 60 BIO_puts(bio_err, "<no cert>\n"); 61 } 62 } 63 if (!ok) { 64 BIO_printf(bio_err, "verify error:num=%d:%s\n", err, 65 X509_verify_cert_error_string(err)); 66 if (verify_args.depth < 0 || verify_args.depth >= depth) { 67 if (!verify_args.return_error) 68 ok = 1; 69 verify_args.error = err; 70 } else { 71 ok = 0; 72 verify_args.error = X509_V_ERR_CERT_CHAIN_TOO_LONG; 73 } 74 } 75 switch (err) { 76 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 77 BIO_puts(bio_err, "issuer= "); 78 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert), 79 0, get_nameopt()); 80 BIO_puts(bio_err, "\n"); 81 break; 82 case X509_V_ERR_CERT_NOT_YET_VALID: 83 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 84 BIO_printf(bio_err, "notBefore="); 85 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert)); 86 BIO_printf(bio_err, "\n"); 87 break; 88 case X509_V_ERR_CERT_HAS_EXPIRED: 89 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 90 BIO_printf(bio_err, "notAfter="); 91 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert)); 92 BIO_printf(bio_err, "\n"); 93 break; 94 case X509_V_ERR_NO_EXPLICIT_POLICY: 95 if (!verify_args.quiet) 96 policies_print(ctx); 97 break; 98 } 99 if (err == X509_V_OK && ok == 2 && !verify_args.quiet) 100 policies_print(ctx); 101 if (ok && !verify_args.quiet) 102 BIO_printf(bio_err, "verify return:%d\n", ok); 103 return ok; 104} 105 106int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file) 107{ 108 if (cert_file != NULL) { 109 if (SSL_CTX_use_certificate_file(ctx, cert_file, 110 SSL_FILETYPE_PEM) <= 0) { 111 BIO_printf(bio_err, "unable to get certificate from '%s'\n", 112 cert_file); 113 ERR_print_errors(bio_err); 114 return 0; 115 } 116 if (key_file == NULL) 117 key_file = cert_file; 118 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) { 119 BIO_printf(bio_err, "unable to get private key from '%s'\n", 120 key_file); 121 ERR_print_errors(bio_err); 122 return 0; 123 } 124 125 /* 126 * If we are using DSA, we can copy the parameters from the private 127 * key 128 */ 129 130 /* 131 * Now we know that a key and cert have been set against the SSL 132 * context 133 */ 134 if (!SSL_CTX_check_private_key(ctx)) { 135 BIO_printf(bio_err, 136 "Private key does not match the certificate public key\n"); 137 return 0; 138 } 139 } 140 return 1; 141} 142 143int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key, 144 STACK_OF(X509) *chain, int build_chain) 145{ 146 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0; 147 if (cert == NULL) 148 return 1; 149 if (SSL_CTX_use_certificate(ctx, cert) <= 0) { 150 BIO_printf(bio_err, "error setting certificate\n"); 151 ERR_print_errors(bio_err); 152 return 0; 153 } 154 155 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) { 156 BIO_printf(bio_err, "error setting private key\n"); 157 ERR_print_errors(bio_err); 158 return 0; 159 } 160 161 /* 162 * Now we know that a key and cert have been set against the SSL context 163 */ 164 if (!SSL_CTX_check_private_key(ctx)) { 165 BIO_printf(bio_err, 166 "Private key does not match the certificate public key\n"); 167 return 0; 168 } 169 if (chain && !SSL_CTX_set1_chain(ctx, chain)) { 170 BIO_printf(bio_err, "error setting certificate chain\n"); 171 ERR_print_errors(bio_err); 172 return 0; 173 } 174 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) { 175 BIO_printf(bio_err, "error building certificate chain\n"); 176 ERR_print_errors(bio_err); 177 return 0; 178 } 179 return 1; 180} 181 182static STRINT_PAIR cert_type_list[] = { 183 {"RSA sign", TLS_CT_RSA_SIGN}, 184 {"DSA sign", TLS_CT_DSS_SIGN}, 185 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH}, 186 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH}, 187 {"ECDSA sign", TLS_CT_ECDSA_SIGN}, 188 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH}, 189 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH}, 190 {"GOST01 Sign", TLS_CT_GOST01_SIGN}, 191 {"GOST12 Sign", TLS_CT_GOST12_SIGN}, 192 {NULL} 193}; 194 195static void ssl_print_client_cert_types(BIO *bio, SSL *s) 196{ 197 const unsigned char *p; 198 int i; 199 int cert_type_num = SSL_get0_certificate_types(s, &p); 200 if (!cert_type_num) 201 return; 202 BIO_puts(bio, "Client Certificate Types: "); 203 for (i = 0; i < cert_type_num; i++) { 204 unsigned char cert_type = p[i]; 205 const char *cname = lookup((int)cert_type, cert_type_list, NULL); 206 207 if (i) 208 BIO_puts(bio, ", "); 209 if (cname != NULL) 210 BIO_puts(bio, cname); 211 else 212 BIO_printf(bio, "UNKNOWN (%d),", cert_type); 213 } 214 BIO_puts(bio, "\n"); 215} 216 217static const char *get_sigtype(int nid) 218{ 219 switch (nid) { 220 case EVP_PKEY_RSA: 221 return "RSA"; 222 223 case EVP_PKEY_RSA_PSS: 224 return "RSA-PSS"; 225 226 case EVP_PKEY_DSA: 227 return "DSA"; 228 229 case EVP_PKEY_EC: 230 return "ECDSA"; 231 232 case NID_ED25519: 233 return "Ed25519"; 234 235 case NID_ED448: 236 return "Ed448"; 237 238 case NID_id_GostR3410_2001: 239 return "gost2001"; 240 241 case NID_id_GostR3410_2012_256: 242 return "gost2012_256"; 243 244 case NID_id_GostR3410_2012_512: 245 return "gost2012_512"; 246 247 default: 248 return NULL; 249 } 250} 251 252static int do_print_sigalgs(BIO *out, SSL *s, int shared) 253{ 254 int i, nsig, client; 255 client = SSL_is_server(s) ? 0 : 1; 256 if (shared) 257 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL); 258 else 259 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL); 260 if (nsig == 0) 261 return 1; 262 263 if (shared) 264 BIO_puts(out, "Shared "); 265 266 if (client) 267 BIO_puts(out, "Requested "); 268 BIO_puts(out, "Signature Algorithms: "); 269 for (i = 0; i < nsig; i++) { 270 int hash_nid, sign_nid; 271 unsigned char rhash, rsign; 272 const char *sstr = NULL; 273 if (shared) 274 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL, 275 &rsign, &rhash); 276 else 277 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash); 278 if (i) 279 BIO_puts(out, ":"); 280 sstr = get_sigtype(sign_nid); 281 if (sstr) 282 BIO_printf(out, "%s", sstr); 283 else 284 BIO_printf(out, "0x%02X", (int)rsign); 285 if (hash_nid != NID_undef) 286 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid)); 287 else if (sstr == NULL) 288 BIO_printf(out, "+0x%02X", (int)rhash); 289 } 290 BIO_puts(out, "\n"); 291 return 1; 292} 293 294int ssl_print_sigalgs(BIO *out, SSL *s) 295{ 296 int nid; 297 if (!SSL_is_server(s)) 298 ssl_print_client_cert_types(out, s); 299 do_print_sigalgs(out, s, 0); 300 do_print_sigalgs(out, s, 1); 301 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef) 302 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid)); 303 if (SSL_get_peer_signature_type_nid(s, &nid)) 304 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid)); 305 return 1; 306} 307 308#ifndef OPENSSL_NO_EC 309int ssl_print_point_formats(BIO *out, SSL *s) 310{ 311 int i, nformats; 312 const char *pformats; 313 nformats = SSL_get0_ec_point_formats(s, &pformats); 314 if (nformats <= 0) 315 return 1; 316 BIO_puts(out, "Supported Elliptic Curve Point Formats: "); 317 for (i = 0; i < nformats; i++, pformats++) { 318 if (i) 319 BIO_puts(out, ":"); 320 switch (*pformats) { 321 case TLSEXT_ECPOINTFORMAT_uncompressed: 322 BIO_puts(out, "uncompressed"); 323 break; 324 325 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime: 326 BIO_puts(out, "ansiX962_compressed_prime"); 327 break; 328 329 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2: 330 BIO_puts(out, "ansiX962_compressed_char2"); 331 break; 332 333 default: 334 BIO_printf(out, "unknown(%d)", (int)*pformats); 335 break; 336 337 } 338 } 339 BIO_puts(out, "\n"); 340 return 1; 341} 342 343int ssl_print_groups(BIO *out, SSL *s, int noshared) 344{ 345 int i, ngroups, *groups, nid; 346 const char *gname; 347 348 ngroups = SSL_get1_groups(s, NULL); 349 if (ngroups <= 0) 350 return 1; 351 groups = app_malloc(ngroups * sizeof(int), "groups to print"); 352 SSL_get1_groups(s, groups); 353 354 BIO_puts(out, "Supported Elliptic Groups: "); 355 for (i = 0; i < ngroups; i++) { 356 if (i) 357 BIO_puts(out, ":"); 358 nid = groups[i]; 359 /* If unrecognised print out hex version */ 360 if (nid & TLSEXT_nid_unknown) { 361 BIO_printf(out, "0x%04X", nid & 0xFFFF); 362 } else { 363 /* TODO(TLS1.3): Get group name here */ 364 /* Use NIST name for curve if it exists */ 365 gname = EC_curve_nid2nist(nid); 366 if (gname == NULL) 367 gname = OBJ_nid2sn(nid); 368 BIO_printf(out, "%s", gname); 369 } 370 } 371 OPENSSL_free(groups); 372 if (noshared) { 373 BIO_puts(out, "\n"); 374 return 1; 375 } 376 BIO_puts(out, "\nShared Elliptic groups: "); 377 ngroups = SSL_get_shared_group(s, -1); 378 for (i = 0; i < ngroups; i++) { 379 if (i) 380 BIO_puts(out, ":"); 381 nid = SSL_get_shared_group(s, i); 382 /* TODO(TLS1.3): Convert for DH groups */ 383 gname = EC_curve_nid2nist(nid); 384 if (gname == NULL) 385 gname = OBJ_nid2sn(nid); 386 BIO_printf(out, "%s", gname); 387 } 388 if (ngroups == 0) 389 BIO_puts(out, "NONE"); 390 BIO_puts(out, "\n"); 391 return 1; 392} 393#endif 394 395int ssl_print_tmp_key(BIO *out, SSL *s) 396{ 397 EVP_PKEY *key; 398 399 if (!SSL_get_peer_tmp_key(s, &key)) 400 return 1; 401 BIO_puts(out, "Server Temp Key: "); 402 switch (EVP_PKEY_id(key)) { 403 case EVP_PKEY_RSA: 404 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key)); 405 break; 406 407 case EVP_PKEY_DH: 408 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key)); 409 break; 410#ifndef OPENSSL_NO_EC 411 case EVP_PKEY_EC: 412 { 413 EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key); 414 int nid; 415 const char *cname; 416 nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec)); 417 EC_KEY_free(ec); 418 cname = EC_curve_nid2nist(nid); 419 if (cname == NULL) 420 cname = OBJ_nid2sn(nid); 421 BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(key)); 422 } 423 break; 424#endif 425 default: 426 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_id(key)), 427 EVP_PKEY_bits(key)); 428 } 429 EVP_PKEY_free(key); 430 return 1; 431} 432 433long bio_dump_callback(BIO *bio, int cmd, const char *argp, 434 int argi, long argl, long ret) 435{ 436 BIO *out; 437 438 out = (BIO *)BIO_get_callback_arg(bio); 439 if (out == NULL) 440 return ret; 441 442 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) { 443 BIO_printf(out, "read from %p [%p] (%lu bytes => %ld (0x%lX))\n", 444 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret); 445 BIO_dump(out, argp, (int)ret); 446 return ret; 447 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) { 448 BIO_printf(out, "write to %p [%p] (%lu bytes => %ld (0x%lX))\n", 449 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret); 450 BIO_dump(out, argp, (int)ret); 451 } 452 return ret; 453} 454 455void apps_ssl_info_callback(const SSL *s, int where, int ret) 456{ 457 const char *str; 458 int w; 459 460 w = where & ~SSL_ST_MASK; 461 462 if (w & SSL_ST_CONNECT) 463 str = "SSL_connect"; 464 else if (w & SSL_ST_ACCEPT) 465 str = "SSL_accept"; 466 else 467 str = "undefined"; 468 469 if (where & SSL_CB_LOOP) { 470 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s)); 471 } else if (where & SSL_CB_ALERT) { 472 str = (where & SSL_CB_READ) ? "read" : "write"; 473 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n", 474 str, 475 SSL_alert_type_string_long(ret), 476 SSL_alert_desc_string_long(ret)); 477 } else if (where & SSL_CB_EXIT) { 478 if (ret == 0) 479 BIO_printf(bio_err, "%s:failed in %s\n", 480 str, SSL_state_string_long(s)); 481 else if (ret < 0) 482 BIO_printf(bio_err, "%s:error in %s\n", 483 str, SSL_state_string_long(s)); 484 } 485} 486 487static STRINT_PAIR ssl_versions[] = { 488 {"SSL 3.0", SSL3_VERSION}, 489 {"TLS 1.0", TLS1_VERSION}, 490 {"TLS 1.1", TLS1_1_VERSION}, 491 {"TLS 1.2", TLS1_2_VERSION}, 492 {"TLS 1.3", TLS1_3_VERSION}, 493 {"DTLS 1.0", DTLS1_VERSION}, 494 {"DTLS 1.0 (bad)", DTLS1_BAD_VER}, 495 {NULL} 496}; 497 498static STRINT_PAIR alert_types[] = { 499 {" close_notify", 0}, 500 {" end_of_early_data", 1}, 501 {" unexpected_message", 10}, 502 {" bad_record_mac", 20}, 503 {" decryption_failed", 21}, 504 {" record_overflow", 22}, 505 {" decompression_failure", 30}, 506 {" handshake_failure", 40}, 507 {" bad_certificate", 42}, 508 {" unsupported_certificate", 43}, 509 {" certificate_revoked", 44}, 510 {" certificate_expired", 45}, 511 {" certificate_unknown", 46}, 512 {" illegal_parameter", 47}, 513 {" unknown_ca", 48}, 514 {" access_denied", 49}, 515 {" decode_error", 50}, 516 {" decrypt_error", 51}, 517 {" export_restriction", 60}, 518 {" protocol_version", 70}, 519 {" insufficient_security", 71}, 520 {" internal_error", 80}, 521 {" inappropriate_fallback", 86}, 522 {" user_canceled", 90}, 523 {" no_renegotiation", 100}, 524 {" missing_extension", 109}, 525 {" unsupported_extension", 110}, 526 {" certificate_unobtainable", 111}, 527 {" unrecognized_name", 112}, 528 {" bad_certificate_status_response", 113}, 529 {" bad_certificate_hash_value", 114}, 530 {" unknown_psk_identity", 115}, 531 {" certificate_required", 116}, 532 {NULL} 533}; 534 535static STRINT_PAIR handshakes[] = { 536 {", HelloRequest", SSL3_MT_HELLO_REQUEST}, 537 {", ClientHello", SSL3_MT_CLIENT_HELLO}, 538 {", ServerHello", SSL3_MT_SERVER_HELLO}, 539 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST}, 540 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET}, 541 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA}, 542 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS}, 543 {", Certificate", SSL3_MT_CERTIFICATE}, 544 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE}, 545 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST}, 546 {", ServerHelloDone", SSL3_MT_SERVER_DONE}, 547 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY}, 548 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE}, 549 {", Finished", SSL3_MT_FINISHED}, 550 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL}, 551 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS}, 552 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA}, 553 {", KeyUpdate", SSL3_MT_KEY_UPDATE}, 554#ifndef OPENSSL_NO_NEXTPROTONEG 555 {", NextProto", SSL3_MT_NEXT_PROTO}, 556#endif 557 {", MessageHash", SSL3_MT_MESSAGE_HASH}, 558 {NULL} 559}; 560 561void msg_cb(int write_p, int version, int content_type, const void *buf, 562 size_t len, SSL *ssl, void *arg) 563{ 564 BIO *bio = arg; 565 const char *str_write_p = write_p ? ">>>" : "<<<"; 566 const char *str_version = lookup(version, ssl_versions, "???"); 567 const char *str_content_type = "", *str_details1 = "", *str_details2 = ""; 568 const unsigned char* bp = buf; 569 570 if (version == SSL3_VERSION || 571 version == TLS1_VERSION || 572 version == TLS1_1_VERSION || 573 version == TLS1_2_VERSION || 574 version == TLS1_3_VERSION || 575 version == DTLS1_VERSION || version == DTLS1_BAD_VER) { 576 switch (content_type) { 577 case 20: 578 str_content_type = ", ChangeCipherSpec"; 579 break; 580 case 21: 581 str_content_type = ", Alert"; 582 str_details1 = ", ???"; 583 if (len == 2) { 584 switch (bp[0]) { 585 case 1: 586 str_details1 = ", warning"; 587 break; 588 case 2: 589 str_details1 = ", fatal"; 590 break; 591 } 592 str_details2 = lookup((int)bp[1], alert_types, " ???"); 593 } 594 break; 595 case 22: 596 str_content_type = ", Handshake"; 597 str_details1 = "???"; 598 if (len > 0) 599 str_details1 = lookup((int)bp[0], handshakes, "???"); 600 break; 601 case 23: 602 str_content_type = ", ApplicationData"; 603 break; 604#ifndef OPENSSL_NO_HEARTBEATS 605 case 24: 606 str_details1 = ", Heartbeat"; 607 608 if (len > 0) { 609 switch (bp[0]) { 610 case 1: 611 str_details1 = ", HeartbeatRequest"; 612 break; 613 case 2: 614 str_details1 = ", HeartbeatResponse"; 615 break; 616 } 617 } 618 break; 619#endif 620 } 621 } 622 623 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, 624 str_content_type, (unsigned long)len, str_details1, 625 str_details2); 626 627 if (len > 0) { 628 size_t num, i; 629 630 BIO_printf(bio, " "); 631 num = len; 632 for (i = 0; i < num; i++) { 633 if (i % 16 == 0 && i > 0) 634 BIO_printf(bio, "\n "); 635 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]); 636 } 637 if (i < len) 638 BIO_printf(bio, " ..."); 639 BIO_printf(bio, "\n"); 640 } 641 (void)BIO_flush(bio); 642} 643 644static STRINT_PAIR tlsext_types[] = { 645 {"server name", TLSEXT_TYPE_server_name}, 646 {"max fragment length", TLSEXT_TYPE_max_fragment_length}, 647 {"client certificate URL", TLSEXT_TYPE_client_certificate_url}, 648 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys}, 649 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac}, 650 {"status request", TLSEXT_TYPE_status_request}, 651 {"user mapping", TLSEXT_TYPE_user_mapping}, 652 {"client authz", TLSEXT_TYPE_client_authz}, 653 {"server authz", TLSEXT_TYPE_server_authz}, 654 {"cert type", TLSEXT_TYPE_cert_type}, 655 {"supported_groups", TLSEXT_TYPE_supported_groups}, 656 {"EC point formats", TLSEXT_TYPE_ec_point_formats}, 657 {"SRP", TLSEXT_TYPE_srp}, 658 {"signature algorithms", TLSEXT_TYPE_signature_algorithms}, 659 {"use SRTP", TLSEXT_TYPE_use_srtp}, 660 {"heartbeat", TLSEXT_TYPE_heartbeat}, 661 {"session ticket", TLSEXT_TYPE_session_ticket}, 662 {"renegotiation info", TLSEXT_TYPE_renegotiate}, 663 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp}, 664 {"TLS padding", TLSEXT_TYPE_padding}, 665#ifdef TLSEXT_TYPE_next_proto_neg 666 {"next protocol", TLSEXT_TYPE_next_proto_neg}, 667#endif 668#ifdef TLSEXT_TYPE_encrypt_then_mac 669 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac}, 670#endif 671#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation 672 {"application layer protocol negotiation", 673 TLSEXT_TYPE_application_layer_protocol_negotiation}, 674#endif 675#ifdef TLSEXT_TYPE_extended_master_secret 676 {"extended master secret", TLSEXT_TYPE_extended_master_secret}, 677#endif 678 {"key share", TLSEXT_TYPE_key_share}, 679 {"supported versions", TLSEXT_TYPE_supported_versions}, 680 {"psk", TLSEXT_TYPE_psk}, 681 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes}, 682 {"certificate authorities", TLSEXT_TYPE_certificate_authorities}, 683 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth}, 684 {NULL} 685}; 686 687/* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */ 688static STRINT_PAIR signature_tls13_scheme_list[] = { 689 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */}, 690 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */}, 691/* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */ 692/* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */ 693 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */}, 694 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */}, 695 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */}, 696 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */}, 697 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */}, 698 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */}, 699 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */}, 700 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */}, 701 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */}, 702 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */}, 703 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */}, 704 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */}, 705 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */}, 706 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */}, 707 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */}, 708 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */}, 709 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */}, 710 {NULL} 711}; 712 713/* from rfc5246 7.4.1.4.1. */ 714static STRINT_PAIR signature_tls12_alg_list[] = { 715 {"anonymous", TLSEXT_signature_anonymous /* 0 */}, 716 {"RSA", TLSEXT_signature_rsa /* 1 */}, 717 {"DSA", TLSEXT_signature_dsa /* 2 */}, 718 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */}, 719 {NULL} 720}; 721 722/* from rfc5246 7.4.1.4.1. */ 723static STRINT_PAIR signature_tls12_hash_list[] = { 724 {"none", TLSEXT_hash_none /* 0 */}, 725 {"MD5", TLSEXT_hash_md5 /* 1 */}, 726 {"SHA1", TLSEXT_hash_sha1 /* 2 */}, 727 {"SHA224", TLSEXT_hash_sha224 /* 3 */}, 728 {"SHA256", TLSEXT_hash_sha256 /* 4 */}, 729 {"SHA384", TLSEXT_hash_sha384 /* 5 */}, 730 {"SHA512", TLSEXT_hash_sha512 /* 6 */}, 731 {NULL} 732}; 733 734void tlsext_cb(SSL *s, int client_server, int type, 735 const unsigned char *data, int len, void *arg) 736{ 737 BIO *bio = arg; 738 const char *extname = lookup(type, tlsext_types, "unknown"); 739 740 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n", 741 client_server ? "server" : "client", extname, type, len); 742 BIO_dump(bio, (const char *)data, len); 743 (void)BIO_flush(bio); 744} 745 746#ifndef OPENSSL_NO_SOCK 747int generate_cookie_callback(SSL *ssl, unsigned char *cookie, 748 unsigned int *cookie_len) 749{ 750 unsigned char *buffer; 751 size_t length = 0; 752 unsigned short port; 753 BIO_ADDR *lpeer = NULL, *peer = NULL; 754 755 /* Initialize a random secret */ 756 if (!cookie_initialized) { 757 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) { 758 BIO_printf(bio_err, "error setting random cookie secret\n"); 759 return 0; 760 } 761 cookie_initialized = 1; 762 } 763 764 if (SSL_is_dtls(ssl)) { 765 lpeer = peer = BIO_ADDR_new(); 766 if (peer == NULL) { 767 BIO_printf(bio_err, "memory full\n"); 768 return 0; 769 } 770 771 /* Read peer information */ 772 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer); 773 } else { 774 peer = ourpeer; 775 } 776 777 /* Create buffer with peer's address and port */ 778 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) { 779 BIO_printf(bio_err, "Failed getting peer address\n"); 780 return 0; 781 } 782 OPENSSL_assert(length != 0); 783 port = BIO_ADDR_rawport(peer); 784 length += sizeof(port); 785 buffer = app_malloc(length, "cookie generate buffer"); 786 787 memcpy(buffer, &port, sizeof(port)); 788 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL); 789 790 /* Calculate HMAC of buffer using the secret */ 791 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH, 792 buffer, length, cookie, cookie_len); 793 794 OPENSSL_free(buffer); 795 BIO_ADDR_free(lpeer); 796 797 return 1; 798} 799 800int verify_cookie_callback(SSL *ssl, const unsigned char *cookie, 801 unsigned int cookie_len) 802{ 803 unsigned char result[EVP_MAX_MD_SIZE]; 804 unsigned int resultlength; 805 806 /* Note: we check cookie_initialized because if it's not, 807 * it cannot be valid */ 808 if (cookie_initialized 809 && generate_cookie_callback(ssl, result, &resultlength) 810 && cookie_len == resultlength 811 && memcmp(result, cookie, resultlength) == 0) 812 return 1; 813 814 return 0; 815} 816 817int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie, 818 size_t *cookie_len) 819{ 820 unsigned int temp; 821 int res = generate_cookie_callback(ssl, cookie, &temp); 822 *cookie_len = temp; 823 return res; 824} 825 826int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie, 827 size_t cookie_len) 828{ 829 return verify_cookie_callback(ssl, cookie, cookie_len); 830} 831 832#endif 833 834/* 835 * Example of extended certificate handling. Where the standard support of 836 * one certificate per algorithm is not sufficient an application can decide 837 * which certificate(s) to use at runtime based on whatever criteria it deems 838 * appropriate. 839 */ 840 841/* Linked list of certificates, keys and chains */ 842struct ssl_excert_st { 843 int certform; 844 const char *certfile; 845 int keyform; 846 const char *keyfile; 847 const char *chainfile; 848 X509 *cert; 849 EVP_PKEY *key; 850 STACK_OF(X509) *chain; 851 int build_chain; 852 struct ssl_excert_st *next, *prev; 853}; 854 855static STRINT_PAIR chain_flags[] = { 856 {"Overall Validity", CERT_PKEY_VALID}, 857 {"Sign with EE key", CERT_PKEY_SIGN}, 858 {"EE signature", CERT_PKEY_EE_SIGNATURE}, 859 {"CA signature", CERT_PKEY_CA_SIGNATURE}, 860 {"EE key parameters", CERT_PKEY_EE_PARAM}, 861 {"CA key parameters", CERT_PKEY_CA_PARAM}, 862 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN}, 863 {"Issuer Name", CERT_PKEY_ISSUER_NAME}, 864 {"Certificate Type", CERT_PKEY_CERT_TYPE}, 865 {NULL} 866}; 867 868static void print_chain_flags(SSL *s, int flags) 869{ 870 STRINT_PAIR *pp; 871 872 for (pp = chain_flags; pp->name; ++pp) 873 BIO_printf(bio_err, "\t%s: %s\n", 874 pp->name, 875 (flags & pp->retval) ? "OK" : "NOT OK"); 876 BIO_printf(bio_err, "\tSuite B: "); 877 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS) 878 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n"); 879 else 880 BIO_printf(bio_err, "not tested\n"); 881} 882 883/* 884 * Very basic selection callback: just use any certificate chain reported as 885 * valid. More sophisticated could prioritise according to local policy. 886 */ 887static int set_cert_cb(SSL *ssl, void *arg) 888{ 889 int i, rv; 890 SSL_EXCERT *exc = arg; 891#ifdef CERT_CB_TEST_RETRY 892 static int retry_cnt; 893 if (retry_cnt < 5) { 894 retry_cnt++; 895 BIO_printf(bio_err, 896 "Certificate callback retry test: count %d\n", 897 retry_cnt); 898 return -1; 899 } 900#endif 901 SSL_certs_clear(ssl); 902 903 if (exc == NULL) 904 return 1; 905 906 /* 907 * Go to end of list and traverse backwards since we prepend newer 908 * entries this retains the original order. 909 */ 910 while (exc->next != NULL) 911 exc = exc->next; 912 913 i = 0; 914 915 while (exc != NULL) { 916 i++; 917 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain); 918 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i); 919 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0, 920 get_nameopt()); 921 BIO_puts(bio_err, "\n"); 922 print_chain_flags(ssl, rv); 923 if (rv & CERT_PKEY_VALID) { 924 if (!SSL_use_certificate(ssl, exc->cert) 925 || !SSL_use_PrivateKey(ssl, exc->key)) { 926 return 0; 927 } 928 /* 929 * NB: we wouldn't normally do this as it is not efficient 930 * building chains on each connection better to cache the chain 931 * in advance. 932 */ 933 if (exc->build_chain) { 934 if (!SSL_build_cert_chain(ssl, 0)) 935 return 0; 936 } else if (exc->chain != NULL) { 937 if (!SSL_set1_chain(ssl, exc->chain)) 938 return 0; 939 } 940 } 941 exc = exc->prev; 942 } 943 return 1; 944} 945 946void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc) 947{ 948 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc); 949} 950 951static int ssl_excert_prepend(SSL_EXCERT **pexc) 952{ 953 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert"); 954 955 memset(exc, 0, sizeof(*exc)); 956 957 exc->next = *pexc; 958 *pexc = exc; 959 960 if (exc->next) { 961 exc->certform = exc->next->certform; 962 exc->keyform = exc->next->keyform; 963 exc->next->prev = exc; 964 } else { 965 exc->certform = FORMAT_PEM; 966 exc->keyform = FORMAT_PEM; 967 } 968 return 1; 969 970} 971 972void ssl_excert_free(SSL_EXCERT *exc) 973{ 974 SSL_EXCERT *curr; 975 976 if (exc == NULL) 977 return; 978 while (exc) { 979 X509_free(exc->cert); 980 EVP_PKEY_free(exc->key); 981 sk_X509_pop_free(exc->chain, X509_free); 982 curr = exc; 983 exc = exc->next; 984 OPENSSL_free(curr); 985 } 986} 987 988int load_excert(SSL_EXCERT **pexc) 989{ 990 SSL_EXCERT *exc = *pexc; 991 if (exc == NULL) 992 return 1; 993 /* If nothing in list, free and set to NULL */ 994 if (exc->certfile == NULL && exc->next == NULL) { 995 ssl_excert_free(exc); 996 *pexc = NULL; 997 return 1; 998 } 999 for (; exc; exc = exc->next) { 1000 if (exc->certfile == NULL) { 1001 BIO_printf(bio_err, "Missing filename\n"); 1002 return 0; 1003 } 1004 exc->cert = load_cert(exc->certfile, exc->certform, 1005 "Server Certificate"); 1006 if (exc->cert == NULL) 1007 return 0; 1008 if (exc->keyfile != NULL) { 1009 exc->key = load_key(exc->keyfile, exc->keyform, 1010 0, NULL, NULL, "Server Key"); 1011 } else { 1012 exc->key = load_key(exc->certfile, exc->certform, 1013 0, NULL, NULL, "Server Key"); 1014 } 1015 if (exc->key == NULL) 1016 return 0; 1017 if (exc->chainfile != NULL) { 1018 if (!load_certs(exc->chainfile, &exc->chain, FORMAT_PEM, NULL, 1019 "Server Chain")) 1020 return 0; 1021 } 1022 } 1023 return 1; 1024} 1025 1026enum range { OPT_X_ENUM }; 1027 1028int args_excert(int opt, SSL_EXCERT **pexc) 1029{ 1030 SSL_EXCERT *exc = *pexc; 1031 1032 assert(opt > OPT_X__FIRST); 1033 assert(opt < OPT_X__LAST); 1034 1035 if (exc == NULL) { 1036 if (!ssl_excert_prepend(&exc)) { 1037 BIO_printf(bio_err, " %s: Error initialising xcert\n", 1038 opt_getprog()); 1039 goto err; 1040 } 1041 *pexc = exc; 1042 } 1043 1044 switch ((enum range)opt) { 1045 case OPT_X__FIRST: 1046 case OPT_X__LAST: 1047 return 0; 1048 case OPT_X_CERT: 1049 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) { 1050 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog()); 1051 goto err; 1052 } 1053 *pexc = exc; 1054 exc->certfile = opt_arg(); 1055 break; 1056 case OPT_X_KEY: 1057 if (exc->keyfile != NULL) { 1058 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog()); 1059 goto err; 1060 } 1061 exc->keyfile = opt_arg(); 1062 break; 1063 case OPT_X_CHAIN: 1064 if (exc->chainfile != NULL) { 1065 BIO_printf(bio_err, "%s: Chain already specified\n", 1066 opt_getprog()); 1067 goto err; 1068 } 1069 exc->chainfile = opt_arg(); 1070 break; 1071 case OPT_X_CHAIN_BUILD: 1072 exc->build_chain = 1; 1073 break; 1074 case OPT_X_CERTFORM: 1075 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->certform)) 1076 return 0; 1077 break; 1078 case OPT_X_KEYFORM: 1079 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->keyform)) 1080 return 0; 1081 break; 1082 } 1083 return 1; 1084 1085 err: 1086 ERR_print_errors(bio_err); 1087 ssl_excert_free(exc); 1088 *pexc = NULL; 1089 return 0; 1090} 1091 1092static void print_raw_cipherlist(SSL *s) 1093{ 1094 const unsigned char *rlist; 1095 static const unsigned char scsv_id[] = { 0, 0xFF }; 1096 size_t i, rlistlen, num; 1097 if (!SSL_is_server(s)) 1098 return; 1099 num = SSL_get0_raw_cipherlist(s, NULL); 1100 OPENSSL_assert(num == 2); 1101 rlistlen = SSL_get0_raw_cipherlist(s, &rlist); 1102 BIO_puts(bio_err, "Client cipher list: "); 1103 for (i = 0; i < rlistlen; i += num, rlist += num) { 1104 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist); 1105 if (i) 1106 BIO_puts(bio_err, ":"); 1107 if (c != NULL) { 1108 BIO_puts(bio_err, SSL_CIPHER_get_name(c)); 1109 } else if (memcmp(rlist, scsv_id, num) == 0) { 1110 BIO_puts(bio_err, "SCSV"); 1111 } else { 1112 size_t j; 1113 BIO_puts(bio_err, "0x"); 1114 for (j = 0; j < num; j++) 1115 BIO_printf(bio_err, "%02X", rlist[j]); 1116 } 1117 } 1118 BIO_puts(bio_err, "\n"); 1119} 1120 1121/* 1122 * Hex encoder for TLSA RRdata, not ':' delimited. 1123 */ 1124static char *hexencode(const unsigned char *data, size_t len) 1125{ 1126 static const char *hex = "0123456789abcdef"; 1127 char *out; 1128 char *cp; 1129 size_t outlen = 2 * len + 1; 1130 int ilen = (int) outlen; 1131 1132 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) { 1133 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n", 1134 opt_getprog(), len); 1135 exit(1); 1136 } 1137 cp = out = app_malloc(ilen, "TLSA hex data buffer"); 1138 1139 while (len-- > 0) { 1140 *cp++ = hex[(*data >> 4) & 0x0f]; 1141 *cp++ = hex[*data++ & 0x0f]; 1142 } 1143 *cp = '\0'; 1144 return out; 1145} 1146 1147void print_verify_detail(SSL *s, BIO *bio) 1148{ 1149 int mdpth; 1150 EVP_PKEY *mspki; 1151 long verify_err = SSL_get_verify_result(s); 1152 1153 if (verify_err == X509_V_OK) { 1154 const char *peername = SSL_get0_peername(s); 1155 1156 BIO_printf(bio, "Verification: OK\n"); 1157 if (peername != NULL) 1158 BIO_printf(bio, "Verified peername: %s\n", peername); 1159 } else { 1160 const char *reason = X509_verify_cert_error_string(verify_err); 1161 1162 BIO_printf(bio, "Verification error: %s\n", reason); 1163 } 1164 1165 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) { 1166 uint8_t usage, selector, mtype; 1167 const unsigned char *data = NULL; 1168 size_t dlen = 0; 1169 char *hexdata; 1170 1171 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen); 1172 1173 /* 1174 * The TLSA data field can be quite long when it is a certificate, 1175 * public key or even a SHA2-512 digest. Because the initial octets of 1176 * ASN.1 certificates and public keys contain mostly boilerplate OIDs 1177 * and lengths, we show the last 12 bytes of the data instead, as these 1178 * are more likely to distinguish distinct TLSA records. 1179 */ 1180#define TLSA_TAIL_SIZE 12 1181 if (dlen > TLSA_TAIL_SIZE) 1182 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE); 1183 else 1184 hexdata = hexencode(data, dlen); 1185 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n", 1186 usage, selector, mtype, 1187 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata, 1188 (mspki != NULL) ? "signed the certificate" : 1189 mdpth ? "matched TA certificate" : "matched EE certificate", 1190 mdpth); 1191 OPENSSL_free(hexdata); 1192 } 1193} 1194 1195void print_ssl_summary(SSL *s) 1196{ 1197 const SSL_CIPHER *c; 1198 X509 *peer; 1199 1200 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s)); 1201 print_raw_cipherlist(s); 1202 c = SSL_get_current_cipher(s); 1203 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c)); 1204 do_print_sigalgs(bio_err, s, 0); 1205 peer = SSL_get_peer_certificate(s); 1206 if (peer != NULL) { 1207 int nid; 1208 1209 BIO_puts(bio_err, "Peer certificate: "); 1210 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer), 1211 0, get_nameopt()); 1212 BIO_puts(bio_err, "\n"); 1213 if (SSL_get_peer_signature_nid(s, &nid)) 1214 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid)); 1215 if (SSL_get_peer_signature_type_nid(s, &nid)) 1216 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid)); 1217 print_verify_detail(s, bio_err); 1218 } else { 1219 BIO_puts(bio_err, "No peer certificate\n"); 1220 } 1221 X509_free(peer); 1222#ifndef OPENSSL_NO_EC 1223 ssl_print_point_formats(bio_err, s); 1224 if (SSL_is_server(s)) 1225 ssl_print_groups(bio_err, s, 1); 1226 else 1227 ssl_print_tmp_key(bio_err, s); 1228#else 1229 if (!SSL_is_server(s)) 1230 ssl_print_tmp_key(bio_err, s); 1231#endif 1232} 1233 1234int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str, 1235 SSL_CTX *ctx) 1236{ 1237 int i; 1238 1239 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx); 1240 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) { 1241 const char *flag = sk_OPENSSL_STRING_value(str, i); 1242 const char *arg = sk_OPENSSL_STRING_value(str, i + 1); 1243 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) { 1244 if (arg != NULL) 1245 BIO_printf(bio_err, "Error with command: \"%s %s\"\n", 1246 flag, arg); 1247 else 1248 BIO_printf(bio_err, "Error with command: \"%s\"\n", flag); 1249 ERR_print_errors(bio_err); 1250 return 0; 1251 } 1252 } 1253 if (!SSL_CONF_CTX_finish(cctx)) { 1254 BIO_puts(bio_err, "Error finishing context\n"); 1255 ERR_print_errors(bio_err); 1256 return 0; 1257 } 1258 return 1; 1259} 1260 1261static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls) 1262{ 1263 X509_CRL *crl; 1264 int i; 1265 for (i = 0; i < sk_X509_CRL_num(crls); i++) { 1266 crl = sk_X509_CRL_value(crls, i); 1267 X509_STORE_add_crl(st, crl); 1268 } 1269 return 1; 1270} 1271 1272int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download) 1273{ 1274 X509_STORE *st; 1275 st = SSL_CTX_get_cert_store(ctx); 1276 add_crls_store(st, crls); 1277 if (crl_download) 1278 store_setup_crl_download(st); 1279 return 1; 1280} 1281 1282int ssl_load_stores(SSL_CTX *ctx, 1283 const char *vfyCApath, const char *vfyCAfile, 1284 const char *chCApath, const char *chCAfile, 1285 STACK_OF(X509_CRL) *crls, int crl_download) 1286{ 1287 X509_STORE *vfy = NULL, *ch = NULL; 1288 int rv = 0; 1289 if (vfyCApath != NULL || vfyCAfile != NULL) { 1290 vfy = X509_STORE_new(); 1291 if (vfy == NULL) 1292 goto err; 1293 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath)) 1294 goto err; 1295 add_crls_store(vfy, crls); 1296 SSL_CTX_set1_verify_cert_store(ctx, vfy); 1297 if (crl_download) 1298 store_setup_crl_download(vfy); 1299 } 1300 if (chCApath != NULL || chCAfile != NULL) { 1301 ch = X509_STORE_new(); 1302 if (ch == NULL) 1303 goto err; 1304 if (!X509_STORE_load_locations(ch, chCAfile, chCApath)) 1305 goto err; 1306 SSL_CTX_set1_chain_cert_store(ctx, ch); 1307 } 1308 rv = 1; 1309 err: 1310 X509_STORE_free(vfy); 1311 X509_STORE_free(ch); 1312 return rv; 1313} 1314 1315/* Verbose print out of security callback */ 1316 1317typedef struct { 1318 BIO *out; 1319 int verbose; 1320 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, 1321 void *other, void *ex); 1322} security_debug_ex; 1323 1324static STRINT_PAIR callback_types[] = { 1325 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED}, 1326 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED}, 1327 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK}, 1328#ifndef OPENSSL_NO_DH 1329 {"Temp DH key bits", SSL_SECOP_TMP_DH}, 1330#endif 1331 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED}, 1332 {"Shared Curve", SSL_SECOP_CURVE_SHARED}, 1333 {"Check Curve", SSL_SECOP_CURVE_CHECK}, 1334 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED}, 1335 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED}, 1336 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK}, 1337 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK}, 1338 {"Certificate chain EE key", SSL_SECOP_EE_KEY}, 1339 {"Certificate chain CA key", SSL_SECOP_CA_KEY}, 1340 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY}, 1341 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY}, 1342 {"Certificate chain CA digest", SSL_SECOP_CA_MD}, 1343 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD}, 1344 {"SSL compression", SSL_SECOP_COMPRESSION}, 1345 {"Session ticket", SSL_SECOP_TICKET}, 1346 {NULL} 1347}; 1348 1349static int security_callback_debug(const SSL *s, const SSL_CTX *ctx, 1350 int op, int bits, int nid, 1351 void *other, void *ex) 1352{ 1353 security_debug_ex *sdb = ex; 1354 int rv, show_bits = 1, cert_md = 0; 1355 const char *nm; 1356 int show_nm; 1357 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex); 1358 if (rv == 1 && sdb->verbose < 2) 1359 return 1; 1360 BIO_puts(sdb->out, "Security callback: "); 1361 1362 nm = lookup(op, callback_types, NULL); 1363 show_nm = nm != NULL; 1364 switch (op) { 1365 case SSL_SECOP_TICKET: 1366 case SSL_SECOP_COMPRESSION: 1367 show_bits = 0; 1368 show_nm = 0; 1369 break; 1370 case SSL_SECOP_VERSION: 1371 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???")); 1372 show_bits = 0; 1373 show_nm = 0; 1374 break; 1375 case SSL_SECOP_CA_MD: 1376 case SSL_SECOP_PEER_CA_MD: 1377 cert_md = 1; 1378 break; 1379 case SSL_SECOP_SIGALG_SUPPORTED: 1380 case SSL_SECOP_SIGALG_SHARED: 1381 case SSL_SECOP_SIGALG_CHECK: 1382 case SSL_SECOP_SIGALG_MASK: 1383 show_nm = 0; 1384 break; 1385 } 1386 if (show_nm) 1387 BIO_printf(sdb->out, "%s=", nm); 1388 1389 switch (op & SSL_SECOP_OTHER_TYPE) { 1390 1391 case SSL_SECOP_OTHER_CIPHER: 1392 BIO_puts(sdb->out, SSL_CIPHER_get_name(other)); 1393 break; 1394 1395#ifndef OPENSSL_NO_EC 1396 case SSL_SECOP_OTHER_CURVE: 1397 { 1398 const char *cname; 1399 cname = EC_curve_nid2nist(nid); 1400 if (cname == NULL) 1401 cname = OBJ_nid2sn(nid); 1402 BIO_puts(sdb->out, cname); 1403 } 1404 break; 1405#endif 1406#ifndef OPENSSL_NO_DH 1407 case SSL_SECOP_OTHER_DH: 1408 { 1409 DH *dh = other; 1410 BIO_printf(sdb->out, "%d", DH_bits(dh)); 1411 break; 1412 } 1413#endif 1414 case SSL_SECOP_OTHER_CERT: 1415 { 1416 if (cert_md) { 1417 int sig_nid = X509_get_signature_nid(other); 1418 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid)); 1419 } else { 1420 EVP_PKEY *pkey = X509_get0_pubkey(other); 1421 const char *algname = ""; 1422 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, 1423 &algname, EVP_PKEY_get0_asn1(pkey)); 1424 BIO_printf(sdb->out, "%s, bits=%d", 1425 algname, EVP_PKEY_bits(pkey)); 1426 } 1427 break; 1428 } 1429 case SSL_SECOP_OTHER_SIGALG: 1430 { 1431 const unsigned char *salg = other; 1432 const char *sname = NULL; 1433 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */ 1434 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */ 1435 1436 if (nm != NULL) 1437 BIO_printf(sdb->out, "%s", nm); 1438 else 1439 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op); 1440 1441 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL); 1442 if (sname != NULL) { 1443 BIO_printf(sdb->out, " scheme=%s", sname); 1444 } else { 1445 int alg_code = salg[1]; 1446 int hash_code = salg[0]; 1447 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL); 1448 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL); 1449 1450 if (alg_str != NULL && hash_str != NULL) 1451 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str); 1452 else 1453 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code); 1454 } 1455 } 1456 1457 } 1458 1459 if (show_bits) 1460 BIO_printf(sdb->out, ", security bits=%d", bits); 1461 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no"); 1462 return rv; 1463} 1464 1465void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose) 1466{ 1467 static security_debug_ex sdb; 1468 1469 sdb.out = bio_err; 1470 sdb.verbose = verbose; 1471 sdb.old_cb = SSL_CTX_get_security_callback(ctx); 1472 SSL_CTX_set_security_callback(ctx, security_callback_debug); 1473 SSL_CTX_set0_security_ex_data(ctx, &sdb); 1474} 1475 1476static void keylog_callback(const SSL *ssl, const char *line) 1477{ 1478 if (bio_keylog == NULL) { 1479 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n"); 1480 return; 1481 } 1482 1483 /* 1484 * There might be concurrent writers to the keylog file, so we must ensure 1485 * that the given line is written at once. 1486 */ 1487 BIO_printf(bio_keylog, "%s\n", line); 1488 (void)BIO_flush(bio_keylog); 1489} 1490 1491int set_keylog_file(SSL_CTX *ctx, const char *keylog_file) 1492{ 1493 /* Close any open files */ 1494 BIO_free_all(bio_keylog); 1495 bio_keylog = NULL; 1496 1497 if (ctx == NULL || keylog_file == NULL) { 1498 /* Keylogging is disabled, OK. */ 1499 return 0; 1500 } 1501 1502 /* 1503 * Append rather than write in order to allow concurrent modification. 1504 * Furthermore, this preserves existing keylog files which is useful when 1505 * the tool is run multiple times. 1506 */ 1507 bio_keylog = BIO_new_file(keylog_file, "a"); 1508 if (bio_keylog == NULL) { 1509 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file); 1510 return 1; 1511 } 1512 1513 /* Write a header for seekable, empty files (this excludes pipes). */ 1514 if (BIO_tell(bio_keylog) == 0) { 1515 BIO_puts(bio_keylog, 1516 "# SSL/TLS secrets log file, generated by OpenSSL\n"); 1517 (void)BIO_flush(bio_keylog); 1518 } 1519 SSL_CTX_set_keylog_callback(ctx, keylog_callback); 1520 return 0; 1521} 1522 1523void print_ca_names(BIO *bio, SSL *s) 1524{ 1525 const char *cs = SSL_is_server(s) ? "server" : "client"; 1526 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s); 1527 int i; 1528 1529 if (sk == NULL || sk_X509_NAME_num(sk) == 0) { 1530 if (!SSL_is_server(s)) 1531 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs); 1532 return; 1533 } 1534 1535 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs); 1536 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 1537 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt()); 1538 BIO_write(bio, "\n", 1); 1539 } 1540} 1541