1/* 2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (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/core_names.h> 16#include <openssl/params.h> 17#include <openssl/err.h> 18#include <openssl/rand.h> 19#include <openssl/x509.h> 20#include <openssl/ssl.h> 21#include <openssl/bn.h> 22#ifndef OPENSSL_NO_DH 23# include <openssl/dh.h> 24#endif 25#include "s_apps.h" 26 27#define COOKIE_SECRET_LENGTH 16 28 29VERIFY_CB_ARGS verify_args = { -1, 0, X509_V_OK, 0 }; 30 31#ifndef OPENSSL_NO_SOCK 32static unsigned char cookie_secret[COOKIE_SECRET_LENGTH]; 33static int cookie_initialized = 0; 34#endif 35static BIO *bio_keylog = NULL; 36 37static const char *lookup(int val, const STRINT_PAIR* list, const char* def) 38{ 39 for ( ; list->name; ++list) 40 if (list->retval == val) 41 return list->name; 42 return def; 43} 44 45int verify_callback(int ok, X509_STORE_CTX *ctx) 46{ 47 X509 *err_cert; 48 int err, depth; 49 50 err_cert = X509_STORE_CTX_get_current_cert(ctx); 51 err = X509_STORE_CTX_get_error(ctx); 52 depth = X509_STORE_CTX_get_error_depth(ctx); 53 54 if (!verify_args.quiet || !ok) { 55 BIO_printf(bio_err, "depth=%d ", depth); 56 if (err_cert != NULL) { 57 X509_NAME_print_ex(bio_err, 58 X509_get_subject_name(err_cert), 59 0, get_nameopt()); 60 BIO_puts(bio_err, "\n"); 61 } else { 62 BIO_puts(bio_err, "<no cert>\n"); 63 } 64 } 65 if (!ok) { 66 BIO_printf(bio_err, "verify error:num=%d:%s\n", err, 67 X509_verify_cert_error_string(err)); 68 if (verify_args.depth < 0 || verify_args.depth >= depth) { 69 if (!verify_args.return_error) 70 ok = 1; 71 verify_args.error = err; 72 } else { 73 ok = 0; 74 verify_args.error = X509_V_ERR_CERT_CHAIN_TOO_LONG; 75 } 76 } 77 switch (err) { 78 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 79 if (err_cert != NULL) { 80 BIO_puts(bio_err, "issuer= "); 81 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert), 82 0, get_nameopt()); 83 BIO_puts(bio_err, "\n"); 84 } 85 break; 86 case X509_V_ERR_CERT_NOT_YET_VALID: 87 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 88 if (err_cert != NULL) { 89 BIO_printf(bio_err, "notBefore="); 90 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert)); 91 BIO_printf(bio_err, "\n"); 92 } 93 break; 94 case X509_V_ERR_CERT_HAS_EXPIRED: 95 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 96 if (err_cert != NULL) { 97 BIO_printf(bio_err, "notAfter="); 98 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert)); 99 BIO_printf(bio_err, "\n"); 100 } 101 break; 102 case X509_V_ERR_NO_EXPLICIT_POLICY: 103 if (!verify_args.quiet) 104 policies_print(ctx); 105 break; 106 } 107 if (err == X509_V_OK && ok == 2 && !verify_args.quiet) 108 policies_print(ctx); 109 if (ok && !verify_args.quiet) 110 BIO_printf(bio_err, "verify return:%d\n", ok); 111 return ok; 112} 113 114int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file) 115{ 116 if (cert_file != NULL) { 117 if (SSL_CTX_use_certificate_file(ctx, cert_file, 118 SSL_FILETYPE_PEM) <= 0) { 119 BIO_printf(bio_err, "unable to get certificate from '%s'\n", 120 cert_file); 121 ERR_print_errors(bio_err); 122 return 0; 123 } 124 if (key_file == NULL) 125 key_file = cert_file; 126 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) { 127 BIO_printf(bio_err, "unable to get private key from '%s'\n", 128 key_file); 129 ERR_print_errors(bio_err); 130 return 0; 131 } 132 133 /* 134 * If we are using DSA, we can copy the parameters from the private 135 * key 136 */ 137 138 /* 139 * Now we know that a key and cert have been set against the SSL 140 * context 141 */ 142 if (!SSL_CTX_check_private_key(ctx)) { 143 BIO_printf(bio_err, 144 "Private key does not match the certificate public key\n"); 145 return 0; 146 } 147 } 148 return 1; 149} 150 151int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key, 152 STACK_OF(X509) *chain, int build_chain) 153{ 154 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0; 155 156 if (cert == NULL) 157 return 1; 158 if (SSL_CTX_use_certificate(ctx, cert) <= 0) { 159 BIO_printf(bio_err, "error setting certificate\n"); 160 ERR_print_errors(bio_err); 161 return 0; 162 } 163 164 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) { 165 BIO_printf(bio_err, "error setting private key\n"); 166 ERR_print_errors(bio_err); 167 return 0; 168 } 169 170 /* 171 * Now we know that a key and cert have been set against the SSL context 172 */ 173 if (!SSL_CTX_check_private_key(ctx)) { 174 BIO_printf(bio_err, 175 "Private key does not match the certificate public key\n"); 176 return 0; 177 } 178 if (chain && !SSL_CTX_set1_chain(ctx, chain)) { 179 BIO_printf(bio_err, "error setting certificate chain\n"); 180 ERR_print_errors(bio_err); 181 return 0; 182 } 183 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) { 184 BIO_printf(bio_err, "error building certificate chain\n"); 185 ERR_print_errors(bio_err); 186 return 0; 187 } 188 return 1; 189} 190 191static STRINT_PAIR cert_type_list[] = { 192 {"RSA sign", TLS_CT_RSA_SIGN}, 193 {"DSA sign", TLS_CT_DSS_SIGN}, 194 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH}, 195 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH}, 196 {"ECDSA sign", TLS_CT_ECDSA_SIGN}, 197 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH}, 198 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH}, 199 {"GOST01 Sign", TLS_CT_GOST01_SIGN}, 200 {"GOST12 Sign", TLS_CT_GOST12_IANA_SIGN}, 201 {NULL} 202}; 203 204static void ssl_print_client_cert_types(BIO *bio, SSL *s) 205{ 206 const unsigned char *p; 207 int i; 208 int cert_type_num = SSL_get0_certificate_types(s, &p); 209 210 if (!cert_type_num) 211 return; 212 BIO_puts(bio, "Client Certificate Types: "); 213 for (i = 0; i < cert_type_num; i++) { 214 unsigned char cert_type = p[i]; 215 const char *cname = lookup((int)cert_type, cert_type_list, NULL); 216 217 if (i) 218 BIO_puts(bio, ", "); 219 if (cname != NULL) 220 BIO_puts(bio, cname); 221 else 222 BIO_printf(bio, "UNKNOWN (%d),", cert_type); 223 } 224 BIO_puts(bio, "\n"); 225} 226 227static const char *get_sigtype(int nid) 228{ 229 switch (nid) { 230 case EVP_PKEY_RSA: 231 return "RSA"; 232 233 case EVP_PKEY_RSA_PSS: 234 return "RSA-PSS"; 235 236 case EVP_PKEY_DSA: 237 return "DSA"; 238 239 case EVP_PKEY_EC: 240 return "ECDSA"; 241 242 case NID_ED25519: 243 return "Ed25519"; 244 245 case NID_ED448: 246 return "Ed448"; 247 248 case NID_id_GostR3410_2001: 249 return "gost2001"; 250 251 case NID_id_GostR3410_2012_256: 252 return "gost2012_256"; 253 254 case NID_id_GostR3410_2012_512: 255 return "gost2012_512"; 256 257 default: 258 return NULL; 259 } 260} 261 262static int do_print_sigalgs(BIO *out, SSL *s, int shared) 263{ 264 int i, nsig, client; 265 266 client = SSL_is_server(s) ? 0 : 1; 267 if (shared) 268 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL); 269 else 270 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL); 271 if (nsig == 0) 272 return 1; 273 274 if (shared) 275 BIO_puts(out, "Shared "); 276 277 if (client) 278 BIO_puts(out, "Requested "); 279 BIO_puts(out, "Signature Algorithms: "); 280 for (i = 0; i < nsig; i++) { 281 int hash_nid, sign_nid; 282 unsigned char rhash, rsign; 283 const char *sstr = NULL; 284 if (shared) 285 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL, 286 &rsign, &rhash); 287 else 288 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash); 289 if (i) 290 BIO_puts(out, ":"); 291 sstr = get_sigtype(sign_nid); 292 if (sstr) 293 BIO_printf(out, "%s", sstr); 294 else 295 BIO_printf(out, "0x%02X", (int)rsign); 296 if (hash_nid != NID_undef) 297 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid)); 298 else if (sstr == NULL) 299 BIO_printf(out, "+0x%02X", (int)rhash); 300 } 301 BIO_puts(out, "\n"); 302 return 1; 303} 304 305int ssl_print_sigalgs(BIO *out, SSL *s) 306{ 307 int nid; 308 309 if (!SSL_is_server(s)) 310 ssl_print_client_cert_types(out, s); 311 do_print_sigalgs(out, s, 0); 312 do_print_sigalgs(out, s, 1); 313 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef) 314 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid)); 315 if (SSL_get_peer_signature_type_nid(s, &nid)) 316 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid)); 317 return 1; 318} 319 320#ifndef OPENSSL_NO_EC 321int ssl_print_point_formats(BIO *out, SSL *s) 322{ 323 int i, nformats; 324 const char *pformats; 325 326 nformats = SSL_get0_ec_point_formats(s, &pformats); 327 if (nformats <= 0) 328 return 1; 329 BIO_puts(out, "Supported Elliptic Curve Point Formats: "); 330 for (i = 0; i < nformats; i++, pformats++) { 331 if (i) 332 BIO_puts(out, ":"); 333 switch (*pformats) { 334 case TLSEXT_ECPOINTFORMAT_uncompressed: 335 BIO_puts(out, "uncompressed"); 336 break; 337 338 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime: 339 BIO_puts(out, "ansiX962_compressed_prime"); 340 break; 341 342 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2: 343 BIO_puts(out, "ansiX962_compressed_char2"); 344 break; 345 346 default: 347 BIO_printf(out, "unknown(%d)", (int)*pformats); 348 break; 349 350 } 351 } 352 BIO_puts(out, "\n"); 353 return 1; 354} 355 356int ssl_print_groups(BIO *out, SSL *s, int noshared) 357{ 358 int i, ngroups, *groups, nid; 359 360 ngroups = SSL_get1_groups(s, NULL); 361 if (ngroups <= 0) 362 return 1; 363 groups = app_malloc(ngroups * sizeof(int), "groups to print"); 364 SSL_get1_groups(s, groups); 365 366 BIO_puts(out, "Supported groups: "); 367 for (i = 0; i < ngroups; i++) { 368 if (i) 369 BIO_puts(out, ":"); 370 nid = groups[i]; 371 BIO_printf(out, "%s", SSL_group_to_name(s, nid)); 372 } 373 OPENSSL_free(groups); 374 if (noshared) { 375 BIO_puts(out, "\n"); 376 return 1; 377 } 378 BIO_puts(out, "\nShared groups: "); 379 ngroups = SSL_get_shared_group(s, -1); 380 for (i = 0; i < ngroups; i++) { 381 if (i) 382 BIO_puts(out, ":"); 383 nid = SSL_get_shared_group(s, i); 384 BIO_printf(out, "%s", SSL_group_to_name(s, nid)); 385 } 386 if (ngroups == 0) 387 BIO_puts(out, "NONE"); 388 BIO_puts(out, "\n"); 389 return 1; 390} 391#endif 392 393int ssl_print_tmp_key(BIO *out, SSL *s) 394{ 395 EVP_PKEY *key; 396 397 if (!SSL_get_peer_tmp_key(s, &key)) 398 return 1; 399 BIO_puts(out, "Server Temp Key: "); 400 switch (EVP_PKEY_get_id(key)) { 401 case EVP_PKEY_RSA: 402 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key)); 403 break; 404 405 case EVP_PKEY_DH: 406 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key)); 407 break; 408#ifndef OPENSSL_NO_EC 409 case EVP_PKEY_EC: 410 { 411 char name[80]; 412 size_t name_len; 413 414 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME, 415 name, sizeof(name), &name_len)) 416 strcpy(name, "?"); 417 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key)); 418 } 419 break; 420#endif 421 default: 422 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)), 423 EVP_PKEY_get_bits(key)); 424 } 425 EVP_PKEY_free(key); 426 return 1; 427} 428 429long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len, 430 int argi, long argl, int ret, size_t *processed) 431{ 432 BIO *out; 433 434 out = (BIO *)BIO_get_callback_arg(bio); 435 if (out == NULL) 436 return ret; 437 438 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) { 439 if (ret > 0 && processed != NULL) { 440 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n", 441 (void *)bio, (void *)argp, len, *processed, *processed); 442 BIO_dump(out, argp, (int)*processed); 443 } else { 444 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n", 445 (void *)bio, (void *)argp, len, ret); 446 } 447 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) { 448 if (ret > 0 && processed != NULL) { 449 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n", 450 (void *)bio, (void *)argp, len, *processed, *processed); 451 BIO_dump(out, argp, (int)*processed); 452 } else { 453 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n", 454 (void *)bio, (void *)argp, len, ret); 455 } 456 } 457 return ret; 458} 459 460void apps_ssl_info_callback(const SSL *s, int where, int ret) 461{ 462 const char *str; 463 int w; 464 465 w = where & ~SSL_ST_MASK; 466 467 if (w & SSL_ST_CONNECT) 468 str = "SSL_connect"; 469 else if (w & SSL_ST_ACCEPT) 470 str = "SSL_accept"; 471 else 472 str = "undefined"; 473 474 if (where & SSL_CB_LOOP) { 475 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s)); 476 } else if (where & SSL_CB_ALERT) { 477 str = (where & SSL_CB_READ) ? "read" : "write"; 478 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n", 479 str, 480 SSL_alert_type_string_long(ret), 481 SSL_alert_desc_string_long(ret)); 482 } else if (where & SSL_CB_EXIT) { 483 if (ret == 0) 484 BIO_printf(bio_err, "%s:failed in %s\n", 485 str, SSL_state_string_long(s)); 486 else if (ret < 0) 487 BIO_printf(bio_err, "%s:error in %s\n", 488 str, SSL_state_string_long(s)); 489 } 490} 491 492static STRINT_PAIR ssl_versions[] = { 493 {"SSL 3.0", SSL3_VERSION}, 494 {"TLS 1.0", TLS1_VERSION}, 495 {"TLS 1.1", TLS1_1_VERSION}, 496 {"TLS 1.2", TLS1_2_VERSION}, 497 {"TLS 1.3", TLS1_3_VERSION}, 498 {"DTLS 1.0", DTLS1_VERSION}, 499 {"DTLS 1.0 (bad)", DTLS1_BAD_VER}, 500 {NULL} 501}; 502 503static STRINT_PAIR alert_types[] = { 504 {" close_notify", 0}, 505 {" end_of_early_data", 1}, 506 {" unexpected_message", 10}, 507 {" bad_record_mac", 20}, 508 {" decryption_failed", 21}, 509 {" record_overflow", 22}, 510 {" decompression_failure", 30}, 511 {" handshake_failure", 40}, 512 {" bad_certificate", 42}, 513 {" unsupported_certificate", 43}, 514 {" certificate_revoked", 44}, 515 {" certificate_expired", 45}, 516 {" certificate_unknown", 46}, 517 {" illegal_parameter", 47}, 518 {" unknown_ca", 48}, 519 {" access_denied", 49}, 520 {" decode_error", 50}, 521 {" decrypt_error", 51}, 522 {" export_restriction", 60}, 523 {" protocol_version", 70}, 524 {" insufficient_security", 71}, 525 {" internal_error", 80}, 526 {" inappropriate_fallback", 86}, 527 {" user_canceled", 90}, 528 {" no_renegotiation", 100}, 529 {" missing_extension", 109}, 530 {" unsupported_extension", 110}, 531 {" certificate_unobtainable", 111}, 532 {" unrecognized_name", 112}, 533 {" bad_certificate_status_response", 113}, 534 {" bad_certificate_hash_value", 114}, 535 {" unknown_psk_identity", 115}, 536 {" certificate_required", 116}, 537 {NULL} 538}; 539 540static STRINT_PAIR handshakes[] = { 541 {", HelloRequest", SSL3_MT_HELLO_REQUEST}, 542 {", ClientHello", SSL3_MT_CLIENT_HELLO}, 543 {", ServerHello", SSL3_MT_SERVER_HELLO}, 544 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST}, 545 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET}, 546 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA}, 547 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS}, 548 {", Certificate", SSL3_MT_CERTIFICATE}, 549 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE}, 550 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST}, 551 {", ServerHelloDone", SSL3_MT_SERVER_DONE}, 552 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY}, 553 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE}, 554 {", Finished", SSL3_MT_FINISHED}, 555 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL}, 556 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS}, 557 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA}, 558 {", KeyUpdate", SSL3_MT_KEY_UPDATE}, 559#ifndef OPENSSL_NO_NEXTPROTONEG 560 {", NextProto", SSL3_MT_NEXT_PROTO}, 561#endif 562 {", MessageHash", SSL3_MT_MESSAGE_HASH}, 563 {NULL} 564}; 565 566void msg_cb(int write_p, int version, int content_type, const void *buf, 567 size_t len, SSL *ssl, void *arg) 568{ 569 BIO *bio = arg; 570 const char *str_write_p = write_p ? ">>>" : "<<<"; 571 char tmpbuf[128]; 572 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = ""; 573 const unsigned char* bp = buf; 574 575 if (version == SSL3_VERSION || 576 version == TLS1_VERSION || 577 version == TLS1_1_VERSION || 578 version == TLS1_2_VERSION || 579 version == TLS1_3_VERSION || 580 version == DTLS1_VERSION || version == DTLS1_BAD_VER) { 581 str_version = lookup(version, ssl_versions, "???"); 582 switch (content_type) { 583 case SSL3_RT_CHANGE_CIPHER_SPEC: 584 /* type 20 */ 585 str_content_type = ", ChangeCipherSpec"; 586 break; 587 case SSL3_RT_ALERT: 588 /* type 21 */ 589 str_content_type = ", Alert"; 590 str_details1 = ", ???"; 591 if (len == 2) { 592 switch (bp[0]) { 593 case 1: 594 str_details1 = ", warning"; 595 break; 596 case 2: 597 str_details1 = ", fatal"; 598 break; 599 } 600 str_details2 = lookup((int)bp[1], alert_types, " ???"); 601 } 602 break; 603 case SSL3_RT_HANDSHAKE: 604 /* type 22 */ 605 str_content_type = ", Handshake"; 606 str_details1 = "???"; 607 if (len > 0) 608 str_details1 = lookup((int)bp[0], handshakes, "???"); 609 break; 610 case SSL3_RT_APPLICATION_DATA: 611 /* type 23 */ 612 str_content_type = ", ApplicationData"; 613 break; 614 case SSL3_RT_HEADER: 615 /* type 256 */ 616 str_content_type = ", RecordHeader"; 617 break; 618 case SSL3_RT_INNER_CONTENT_TYPE: 619 /* type 257 */ 620 str_content_type = ", InnerContent"; 621 break; 622 default: 623 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type); 624 str_content_type = tmpbuf; 625 } 626 } else { 627 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type); 628 str_version = tmpbuf; 629 } 630 631 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, 632 str_content_type, (unsigned long)len, str_details1, 633 str_details2); 634 635 if (len > 0) { 636 size_t num, i; 637 638 BIO_printf(bio, " "); 639 num = len; 640 for (i = 0; i < num; i++) { 641 if (i % 16 == 0 && i > 0) 642 BIO_printf(bio, "\n "); 643 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]); 644 } 645 if (i < len) 646 BIO_printf(bio, " ..."); 647 BIO_printf(bio, "\n"); 648 } 649 (void)BIO_flush(bio); 650} 651 652static STRINT_PAIR tlsext_types[] = { 653 {"server name", TLSEXT_TYPE_server_name}, 654 {"max fragment length", TLSEXT_TYPE_max_fragment_length}, 655 {"client certificate URL", TLSEXT_TYPE_client_certificate_url}, 656 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys}, 657 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac}, 658 {"status request", TLSEXT_TYPE_status_request}, 659 {"user mapping", TLSEXT_TYPE_user_mapping}, 660 {"client authz", TLSEXT_TYPE_client_authz}, 661 {"server authz", TLSEXT_TYPE_server_authz}, 662 {"cert type", TLSEXT_TYPE_cert_type}, 663 {"supported_groups", TLSEXT_TYPE_supported_groups}, 664 {"EC point formats", TLSEXT_TYPE_ec_point_formats}, 665 {"SRP", TLSEXT_TYPE_srp}, 666 {"signature algorithms", TLSEXT_TYPE_signature_algorithms}, 667 {"use SRTP", TLSEXT_TYPE_use_srtp}, 668 {"session ticket", TLSEXT_TYPE_session_ticket}, 669 {"renegotiation info", TLSEXT_TYPE_renegotiate}, 670 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp}, 671 {"TLS padding", TLSEXT_TYPE_padding}, 672#ifdef TLSEXT_TYPE_next_proto_neg 673 {"next protocol", TLSEXT_TYPE_next_proto_neg}, 674#endif 675#ifdef TLSEXT_TYPE_encrypt_then_mac 676 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac}, 677#endif 678#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation 679 {"application layer protocol negotiation", 680 TLSEXT_TYPE_application_layer_protocol_negotiation}, 681#endif 682#ifdef TLSEXT_TYPE_extended_master_secret 683 {"extended master secret", TLSEXT_TYPE_extended_master_secret}, 684#endif 685 {"key share", TLSEXT_TYPE_key_share}, 686 {"supported versions", TLSEXT_TYPE_supported_versions}, 687 {"psk", TLSEXT_TYPE_psk}, 688 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes}, 689 {"certificate authorities", TLSEXT_TYPE_certificate_authorities}, 690 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth}, 691 {NULL} 692}; 693 694/* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */ 695static STRINT_PAIR signature_tls13_scheme_list[] = { 696 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */}, 697 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */}, 698/* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */ 699/* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */ 700 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */}, 701 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */}, 702 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */}, 703 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */}, 704 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */}, 705 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */}, 706 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */}, 707 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */}, 708 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */}, 709 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */}, 710 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */}, 711 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */}, 712 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */}, 713 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */}, 714 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */}, 715 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */}, 716 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */}, 717 {NULL} 718}; 719 720/* from rfc5246 7.4.1.4.1. */ 721static STRINT_PAIR signature_tls12_alg_list[] = { 722 {"anonymous", TLSEXT_signature_anonymous /* 0 */}, 723 {"RSA", TLSEXT_signature_rsa /* 1 */}, 724 {"DSA", TLSEXT_signature_dsa /* 2 */}, 725 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */}, 726 {NULL} 727}; 728 729/* from rfc5246 7.4.1.4.1. */ 730static STRINT_PAIR signature_tls12_hash_list[] = { 731 {"none", TLSEXT_hash_none /* 0 */}, 732 {"MD5", TLSEXT_hash_md5 /* 1 */}, 733 {"SHA1", TLSEXT_hash_sha1 /* 2 */}, 734 {"SHA224", TLSEXT_hash_sha224 /* 3 */}, 735 {"SHA256", TLSEXT_hash_sha256 /* 4 */}, 736 {"SHA384", TLSEXT_hash_sha384 /* 5 */}, 737 {"SHA512", TLSEXT_hash_sha512 /* 6 */}, 738 {NULL} 739}; 740 741void tlsext_cb(SSL *s, int client_server, int type, 742 const unsigned char *data, int len, void *arg) 743{ 744 BIO *bio = arg; 745 const char *extname = lookup(type, tlsext_types, "unknown"); 746 747 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n", 748 client_server ? "server" : "client", extname, type, len); 749 BIO_dump(bio, (const char *)data, len); 750 (void)BIO_flush(bio); 751} 752 753#ifndef OPENSSL_NO_SOCK 754int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie, 755 size_t *cookie_len) 756{ 757 unsigned char *buffer = NULL; 758 size_t length = 0; 759 unsigned short port; 760 BIO_ADDR *lpeer = NULL, *peer = NULL; 761 int res = 0; 762 763 /* Initialize a random secret */ 764 if (!cookie_initialized) { 765 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) { 766 BIO_printf(bio_err, "error setting random cookie secret\n"); 767 return 0; 768 } 769 cookie_initialized = 1; 770 } 771 772 if (SSL_is_dtls(ssl)) { 773 lpeer = peer = BIO_ADDR_new(); 774 if (peer == NULL) { 775 BIO_printf(bio_err, "memory full\n"); 776 return 0; 777 } 778 779 /* Read peer information */ 780 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer); 781 } else { 782 peer = ourpeer; 783 } 784 785 /* Create buffer with peer's address and port */ 786 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) { 787 BIO_printf(bio_err, "Failed getting peer address\n"); 788 BIO_ADDR_free(lpeer); 789 return 0; 790 } 791 OPENSSL_assert(length != 0); 792 port = BIO_ADDR_rawport(peer); 793 length += sizeof(port); 794 buffer = app_malloc(length, "cookie generate buffer"); 795 796 memcpy(buffer, &port, sizeof(port)); 797 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL); 798 799 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL, 800 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length, 801 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) { 802 BIO_printf(bio_err, 803 "Error calculating HMAC-SHA1 of buffer with secret\n"); 804 goto end; 805 } 806 res = 1; 807end: 808 OPENSSL_free(buffer); 809 BIO_ADDR_free(lpeer); 810 811 return res; 812} 813 814int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie, 815 size_t cookie_len) 816{ 817 unsigned char result[EVP_MAX_MD_SIZE]; 818 size_t resultlength; 819 820 /* Note: we check cookie_initialized because if it's not, 821 * it cannot be valid */ 822 if (cookie_initialized 823 && generate_stateless_cookie_callback(ssl, result, &resultlength) 824 && cookie_len == resultlength 825 && memcmp(result, cookie, resultlength) == 0) 826 return 1; 827 828 return 0; 829} 830 831int generate_cookie_callback(SSL *ssl, unsigned char *cookie, 832 unsigned int *cookie_len) 833{ 834 size_t temp = 0; 835 int res = generate_stateless_cookie_callback(ssl, cookie, &temp); 836 837 if (res != 0) 838 *cookie_len = (unsigned int)temp; 839 return res; 840} 841 842int verify_cookie_callback(SSL *ssl, const unsigned char *cookie, 843 unsigned int cookie_len) 844{ 845 return verify_stateless_cookie_callback(ssl, cookie, cookie_len); 846} 847 848#endif 849 850/* 851 * Example of extended certificate handling. Where the standard support of 852 * one certificate per algorithm is not sufficient an application can decide 853 * which certificate(s) to use at runtime based on whatever criteria it deems 854 * appropriate. 855 */ 856 857/* Linked list of certificates, keys and chains */ 858struct ssl_excert_st { 859 int certform; 860 const char *certfile; 861 int keyform; 862 const char *keyfile; 863 const char *chainfile; 864 X509 *cert; 865 EVP_PKEY *key; 866 STACK_OF(X509) *chain; 867 int build_chain; 868 struct ssl_excert_st *next, *prev; 869}; 870 871static STRINT_PAIR chain_flags[] = { 872 {"Overall Validity", CERT_PKEY_VALID}, 873 {"Sign with EE key", CERT_PKEY_SIGN}, 874 {"EE signature", CERT_PKEY_EE_SIGNATURE}, 875 {"CA signature", CERT_PKEY_CA_SIGNATURE}, 876 {"EE key parameters", CERT_PKEY_EE_PARAM}, 877 {"CA key parameters", CERT_PKEY_CA_PARAM}, 878 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN}, 879 {"Issuer Name", CERT_PKEY_ISSUER_NAME}, 880 {"Certificate Type", CERT_PKEY_CERT_TYPE}, 881 {NULL} 882}; 883 884static void print_chain_flags(SSL *s, int flags) 885{ 886 STRINT_PAIR *pp; 887 888 for (pp = chain_flags; pp->name; ++pp) 889 BIO_printf(bio_err, "\t%s: %s\n", 890 pp->name, 891 (flags & pp->retval) ? "OK" : "NOT OK"); 892 BIO_printf(bio_err, "\tSuite B: "); 893 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS) 894 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n"); 895 else 896 BIO_printf(bio_err, "not tested\n"); 897} 898 899/* 900 * Very basic selection callback: just use any certificate chain reported as 901 * valid. More sophisticated could prioritise according to local policy. 902 */ 903static int set_cert_cb(SSL *ssl, void *arg) 904{ 905 int i, rv; 906 SSL_EXCERT *exc = arg; 907#ifdef CERT_CB_TEST_RETRY 908 static int retry_cnt; 909 910 if (retry_cnt < 5) { 911 retry_cnt++; 912 BIO_printf(bio_err, 913 "Certificate callback retry test: count %d\n", 914 retry_cnt); 915 return -1; 916 } 917#endif 918 SSL_certs_clear(ssl); 919 920 if (exc == NULL) 921 return 1; 922 923 /* 924 * Go to end of list and traverse backwards since we prepend newer 925 * entries this retains the original order. 926 */ 927 while (exc->next != NULL) 928 exc = exc->next; 929 930 i = 0; 931 932 while (exc != NULL) { 933 i++; 934 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain); 935 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i); 936 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0, 937 get_nameopt()); 938 BIO_puts(bio_err, "\n"); 939 print_chain_flags(ssl, rv); 940 if (rv & CERT_PKEY_VALID) { 941 if (!SSL_use_certificate(ssl, exc->cert) 942 || !SSL_use_PrivateKey(ssl, exc->key)) { 943 return 0; 944 } 945 /* 946 * NB: we wouldn't normally do this as it is not efficient 947 * building chains on each connection better to cache the chain 948 * in advance. 949 */ 950 if (exc->build_chain) { 951 if (!SSL_build_cert_chain(ssl, 0)) 952 return 0; 953 } else if (exc->chain != NULL) { 954 if (!SSL_set1_chain(ssl, exc->chain)) 955 return 0; 956 } 957 } 958 exc = exc->prev; 959 } 960 return 1; 961} 962 963void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc) 964{ 965 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc); 966} 967 968static int ssl_excert_prepend(SSL_EXCERT **pexc) 969{ 970 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert"); 971 972 memset(exc, 0, sizeof(*exc)); 973 974 exc->next = *pexc; 975 *pexc = exc; 976 977 if (exc->next) { 978 exc->certform = exc->next->certform; 979 exc->keyform = exc->next->keyform; 980 exc->next->prev = exc; 981 } else { 982 exc->certform = FORMAT_PEM; 983 exc->keyform = FORMAT_PEM; 984 } 985 return 1; 986 987} 988 989void ssl_excert_free(SSL_EXCERT *exc) 990{ 991 SSL_EXCERT *curr; 992 993 if (exc == NULL) 994 return; 995 while (exc) { 996 X509_free(exc->cert); 997 EVP_PKEY_free(exc->key); 998 sk_X509_pop_free(exc->chain, X509_free); 999 curr = exc; 1000 exc = exc->next; 1001 OPENSSL_free(curr); 1002 } 1003} 1004 1005int load_excert(SSL_EXCERT **pexc) 1006{ 1007 SSL_EXCERT *exc = *pexc; 1008 1009 if (exc == NULL) 1010 return 1; 1011 /* If nothing in list, free and set to NULL */ 1012 if (exc->certfile == NULL && exc->next == NULL) { 1013 ssl_excert_free(exc); 1014 *pexc = NULL; 1015 return 1; 1016 } 1017 for (; exc; exc = exc->next) { 1018 if (exc->certfile == NULL) { 1019 BIO_printf(bio_err, "Missing filename\n"); 1020 return 0; 1021 } 1022 exc->cert = load_cert(exc->certfile, exc->certform, 1023 "Server Certificate"); 1024 if (exc->cert == NULL) 1025 return 0; 1026 if (exc->keyfile != NULL) { 1027 exc->key = load_key(exc->keyfile, exc->keyform, 1028 0, NULL, NULL, "server key"); 1029 } else { 1030 exc->key = load_key(exc->certfile, exc->certform, 1031 0, NULL, NULL, "server key"); 1032 } 1033 if (exc->key == NULL) 1034 return 0; 1035 if (exc->chainfile != NULL) { 1036 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain")) 1037 return 0; 1038 } 1039 } 1040 return 1; 1041} 1042 1043enum range { OPT_X_ENUM }; 1044 1045int args_excert(int opt, SSL_EXCERT **pexc) 1046{ 1047 SSL_EXCERT *exc = *pexc; 1048 1049 assert(opt > OPT_X__FIRST); 1050 assert(opt < OPT_X__LAST); 1051 1052 if (exc == NULL) { 1053 if (!ssl_excert_prepend(&exc)) { 1054 BIO_printf(bio_err, " %s: Error initialising xcert\n", 1055 opt_getprog()); 1056 goto err; 1057 } 1058 *pexc = exc; 1059 } 1060 1061 switch ((enum range)opt) { 1062 case OPT_X__FIRST: 1063 case OPT_X__LAST: 1064 return 0; 1065 case OPT_X_CERT: 1066 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) { 1067 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog()); 1068 goto err; 1069 } 1070 *pexc = exc; 1071 exc->certfile = opt_arg(); 1072 break; 1073 case OPT_X_KEY: 1074 if (exc->keyfile != NULL) { 1075 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog()); 1076 goto err; 1077 } 1078 exc->keyfile = opt_arg(); 1079 break; 1080 case OPT_X_CHAIN: 1081 if (exc->chainfile != NULL) { 1082 BIO_printf(bio_err, "%s: Chain already specified\n", 1083 opt_getprog()); 1084 goto err; 1085 } 1086 exc->chainfile = opt_arg(); 1087 break; 1088 case OPT_X_CHAIN_BUILD: 1089 exc->build_chain = 1; 1090 break; 1091 case OPT_X_CERTFORM: 1092 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform)) 1093 return 0; 1094 break; 1095 case OPT_X_KEYFORM: 1096 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform)) 1097 return 0; 1098 break; 1099 } 1100 return 1; 1101 1102 err: 1103 ERR_print_errors(bio_err); 1104 ssl_excert_free(exc); 1105 *pexc = NULL; 1106 return 0; 1107} 1108 1109static void print_raw_cipherlist(SSL *s) 1110{ 1111 const unsigned char *rlist; 1112 static const unsigned char scsv_id[] = { 0, 0xFF }; 1113 size_t i, rlistlen, num; 1114 1115 if (!SSL_is_server(s)) 1116 return; 1117 num = SSL_get0_raw_cipherlist(s, NULL); 1118 OPENSSL_assert(num == 2); 1119 rlistlen = SSL_get0_raw_cipherlist(s, &rlist); 1120 BIO_puts(bio_err, "Client cipher list: "); 1121 for (i = 0; i < rlistlen; i += num, rlist += num) { 1122 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist); 1123 if (i) 1124 BIO_puts(bio_err, ":"); 1125 if (c != NULL) { 1126 BIO_puts(bio_err, SSL_CIPHER_get_name(c)); 1127 } else if (memcmp(rlist, scsv_id, num) == 0) { 1128 BIO_puts(bio_err, "SCSV"); 1129 } else { 1130 size_t j; 1131 BIO_puts(bio_err, "0x"); 1132 for (j = 0; j < num; j++) 1133 BIO_printf(bio_err, "%02X", rlist[j]); 1134 } 1135 } 1136 BIO_puts(bio_err, "\n"); 1137} 1138 1139/* 1140 * Hex encoder for TLSA RRdata, not ':' delimited. 1141 */ 1142static char *hexencode(const unsigned char *data, size_t len) 1143{ 1144 static const char *hex = "0123456789abcdef"; 1145 char *out; 1146 char *cp; 1147 size_t outlen = 2 * len + 1; 1148 int ilen = (int) outlen; 1149 1150 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) { 1151 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n", 1152 opt_getprog(), len); 1153 exit(1); 1154 } 1155 cp = out = app_malloc(ilen, "TLSA hex data buffer"); 1156 1157 while (len-- > 0) { 1158 *cp++ = hex[(*data >> 4) & 0x0f]; 1159 *cp++ = hex[*data++ & 0x0f]; 1160 } 1161 *cp = '\0'; 1162 return out; 1163} 1164 1165void print_verify_detail(SSL *s, BIO *bio) 1166{ 1167 int mdpth; 1168 EVP_PKEY *mspki; 1169 long verify_err = SSL_get_verify_result(s); 1170 1171 if (verify_err == X509_V_OK) { 1172 const char *peername = SSL_get0_peername(s); 1173 1174 BIO_printf(bio, "Verification: OK\n"); 1175 if (peername != NULL) 1176 BIO_printf(bio, "Verified peername: %s\n", peername); 1177 } else { 1178 const char *reason = X509_verify_cert_error_string(verify_err); 1179 1180 BIO_printf(bio, "Verification error: %s\n", reason); 1181 } 1182 1183 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) { 1184 uint8_t usage, selector, mtype; 1185 const unsigned char *data = NULL; 1186 size_t dlen = 0; 1187 char *hexdata; 1188 1189 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen); 1190 1191 /* 1192 * The TLSA data field can be quite long when it is a certificate, 1193 * public key or even a SHA2-512 digest. Because the initial octets of 1194 * ASN.1 certificates and public keys contain mostly boilerplate OIDs 1195 * and lengths, we show the last 12 bytes of the data instead, as these 1196 * are more likely to distinguish distinct TLSA records. 1197 */ 1198#define TLSA_TAIL_SIZE 12 1199 if (dlen > TLSA_TAIL_SIZE) 1200 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE); 1201 else 1202 hexdata = hexencode(data, dlen); 1203 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n", 1204 usage, selector, mtype, 1205 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata, 1206 (mspki != NULL) ? "signed the certificate" : 1207 mdpth ? "matched TA certificate" : "matched EE certificate", 1208 mdpth); 1209 OPENSSL_free(hexdata); 1210 } 1211} 1212 1213void print_ssl_summary(SSL *s) 1214{ 1215 const SSL_CIPHER *c; 1216 X509 *peer; 1217 1218 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s)); 1219 print_raw_cipherlist(s); 1220 c = SSL_get_current_cipher(s); 1221 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c)); 1222 do_print_sigalgs(bio_err, s, 0); 1223 peer = SSL_get0_peer_certificate(s); 1224 if (peer != NULL) { 1225 int nid; 1226 1227 BIO_puts(bio_err, "Peer certificate: "); 1228 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer), 1229 0, get_nameopt()); 1230 BIO_puts(bio_err, "\n"); 1231 if (SSL_get_peer_signature_nid(s, &nid)) 1232 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid)); 1233 if (SSL_get_peer_signature_type_nid(s, &nid)) 1234 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid)); 1235 print_verify_detail(s, bio_err); 1236 } else { 1237 BIO_puts(bio_err, "No peer certificate\n"); 1238 } 1239#ifndef OPENSSL_NO_EC 1240 ssl_print_point_formats(bio_err, s); 1241 if (SSL_is_server(s)) 1242 ssl_print_groups(bio_err, s, 1); 1243 else 1244 ssl_print_tmp_key(bio_err, s); 1245#else 1246 if (!SSL_is_server(s)) 1247 ssl_print_tmp_key(bio_err, s); 1248#endif 1249} 1250 1251int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str, 1252 SSL_CTX *ctx) 1253{ 1254 int i; 1255 1256 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx); 1257 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) { 1258 const char *flag = sk_OPENSSL_STRING_value(str, i); 1259 const char *arg = sk_OPENSSL_STRING_value(str, i + 1); 1260 1261 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) { 1262 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n", 1263 flag, arg == NULL ? "<NULL>" : arg); 1264 ERR_print_errors(bio_err); 1265 return 0; 1266 } 1267 } 1268 if (!SSL_CONF_CTX_finish(cctx)) { 1269 BIO_puts(bio_err, "Error finishing context\n"); 1270 ERR_print_errors(bio_err); 1271 return 0; 1272 } 1273 return 1; 1274} 1275 1276static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls) 1277{ 1278 X509_CRL *crl; 1279 int i, ret = 1; 1280 1281 for (i = 0; i < sk_X509_CRL_num(crls); i++) { 1282 crl = sk_X509_CRL_value(crls, i); 1283 if (!X509_STORE_add_crl(st, crl)) 1284 ret = 0; 1285 } 1286 return ret; 1287} 1288 1289int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download) 1290{ 1291 X509_STORE *st; 1292 1293 st = SSL_CTX_get_cert_store(ctx); 1294 add_crls_store(st, crls); 1295 if (crl_download) 1296 store_setup_crl_download(st); 1297 return 1; 1298} 1299 1300int ssl_load_stores(SSL_CTX *ctx, 1301 const char *vfyCApath, const char *vfyCAfile, 1302 const char *vfyCAstore, 1303 const char *chCApath, const char *chCAfile, 1304 const char *chCAstore, 1305 STACK_OF(X509_CRL) *crls, int crl_download) 1306{ 1307 X509_STORE *vfy = NULL, *ch = NULL; 1308 int rv = 0; 1309 1310 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) { 1311 vfy = X509_STORE_new(); 1312 if (vfy == NULL) 1313 goto err; 1314 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile)) 1315 goto err; 1316 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath)) 1317 goto err; 1318 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore)) 1319 goto err; 1320 add_crls_store(vfy, crls); 1321 SSL_CTX_set1_verify_cert_store(ctx, vfy); 1322 if (crl_download) 1323 store_setup_crl_download(vfy); 1324 } 1325 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) { 1326 ch = X509_STORE_new(); 1327 if (ch == NULL) 1328 goto err; 1329 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile)) 1330 goto err; 1331 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath)) 1332 goto err; 1333 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore)) 1334 goto err; 1335 SSL_CTX_set1_chain_cert_store(ctx, ch); 1336 } 1337 rv = 1; 1338 err: 1339 X509_STORE_free(vfy); 1340 X509_STORE_free(ch); 1341 return rv; 1342} 1343 1344/* Verbose print out of security callback */ 1345 1346typedef struct { 1347 BIO *out; 1348 int verbose; 1349 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, 1350 void *other, void *ex); 1351} security_debug_ex; 1352 1353static STRINT_PAIR callback_types[] = { 1354 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED}, 1355 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED}, 1356 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK}, 1357#ifndef OPENSSL_NO_DH 1358 {"Temp DH key bits", SSL_SECOP_TMP_DH}, 1359#endif 1360 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED}, 1361 {"Shared Curve", SSL_SECOP_CURVE_SHARED}, 1362 {"Check Curve", SSL_SECOP_CURVE_CHECK}, 1363 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED}, 1364 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED}, 1365 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK}, 1366 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK}, 1367 {"Certificate chain EE key", SSL_SECOP_EE_KEY}, 1368 {"Certificate chain CA key", SSL_SECOP_CA_KEY}, 1369 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY}, 1370 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY}, 1371 {"Certificate chain CA digest", SSL_SECOP_CA_MD}, 1372 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD}, 1373 {"SSL compression", SSL_SECOP_COMPRESSION}, 1374 {"Session ticket", SSL_SECOP_TICKET}, 1375 {NULL} 1376}; 1377 1378static int security_callback_debug(const SSL *s, const SSL_CTX *ctx, 1379 int op, int bits, int nid, 1380 void *other, void *ex) 1381{ 1382 security_debug_ex *sdb = ex; 1383 int rv, show_bits = 1, cert_md = 0; 1384 const char *nm; 1385 int show_nm; 1386 1387 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex); 1388 if (rv == 1 && sdb->verbose < 2) 1389 return 1; 1390 BIO_puts(sdb->out, "Security callback: "); 1391 1392 nm = lookup(op, callback_types, NULL); 1393 show_nm = nm != NULL; 1394 switch (op) { 1395 case SSL_SECOP_TICKET: 1396 case SSL_SECOP_COMPRESSION: 1397 show_bits = 0; 1398 show_nm = 0; 1399 break; 1400 case SSL_SECOP_VERSION: 1401 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???")); 1402 show_bits = 0; 1403 show_nm = 0; 1404 break; 1405 case SSL_SECOP_CA_MD: 1406 case SSL_SECOP_PEER_CA_MD: 1407 cert_md = 1; 1408 break; 1409 case SSL_SECOP_SIGALG_SUPPORTED: 1410 case SSL_SECOP_SIGALG_SHARED: 1411 case SSL_SECOP_SIGALG_CHECK: 1412 case SSL_SECOP_SIGALG_MASK: 1413 show_nm = 0; 1414 break; 1415 } 1416 if (show_nm) 1417 BIO_printf(sdb->out, "%s=", nm); 1418 1419 switch (op & SSL_SECOP_OTHER_TYPE) { 1420 1421 case SSL_SECOP_OTHER_CIPHER: 1422 BIO_puts(sdb->out, SSL_CIPHER_get_name(other)); 1423 break; 1424 1425#ifndef OPENSSL_NO_EC 1426 case SSL_SECOP_OTHER_CURVE: 1427 { 1428 const char *cname; 1429 cname = EC_curve_nid2nist(nid); 1430 if (cname == NULL) 1431 cname = OBJ_nid2sn(nid); 1432 BIO_puts(sdb->out, cname); 1433 } 1434 break; 1435#endif 1436 case SSL_SECOP_OTHER_CERT: 1437 { 1438 if (cert_md) { 1439 int sig_nid = X509_get_signature_nid(other); 1440 1441 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid)); 1442 } else { 1443 EVP_PKEY *pkey = X509_get0_pubkey(other); 1444 1445 if (pkey == NULL) { 1446 BIO_printf(sdb->out, "Public key missing"); 1447 } else { 1448 const char *algname = ""; 1449 1450 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, 1451 &algname, EVP_PKEY_get0_asn1(pkey)); 1452 BIO_printf(sdb->out, "%s, bits=%d", 1453 algname, EVP_PKEY_get_bits(pkey)); 1454 } 1455 } 1456 break; 1457 } 1458 case SSL_SECOP_OTHER_SIGALG: 1459 { 1460 const unsigned char *salg = other; 1461 const char *sname = NULL; 1462 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */ 1463 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */ 1464 1465 if (nm != NULL) 1466 BIO_printf(sdb->out, "%s", nm); 1467 else 1468 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op); 1469 1470 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL); 1471 if (sname != NULL) { 1472 BIO_printf(sdb->out, " scheme=%s", sname); 1473 } else { 1474 int alg_code = salg[1]; 1475 int hash_code = salg[0]; 1476 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL); 1477 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL); 1478 1479 if (alg_str != NULL && hash_str != NULL) 1480 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str); 1481 else 1482 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code); 1483 } 1484 } 1485 1486 } 1487 1488 if (show_bits) 1489 BIO_printf(sdb->out, ", security bits=%d", bits); 1490 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no"); 1491 return rv; 1492} 1493 1494void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose) 1495{ 1496 static security_debug_ex sdb; 1497 1498 sdb.out = bio_err; 1499 sdb.verbose = verbose; 1500 sdb.old_cb = SSL_CTX_get_security_callback(ctx); 1501 SSL_CTX_set_security_callback(ctx, security_callback_debug); 1502 SSL_CTX_set0_security_ex_data(ctx, &sdb); 1503} 1504 1505static void keylog_callback(const SSL *ssl, const char *line) 1506{ 1507 if (bio_keylog == NULL) { 1508 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n"); 1509 return; 1510 } 1511 1512 /* 1513 * There might be concurrent writers to the keylog file, so we must ensure 1514 * that the given line is written at once. 1515 */ 1516 BIO_printf(bio_keylog, "%s\n", line); 1517 (void)BIO_flush(bio_keylog); 1518} 1519 1520int set_keylog_file(SSL_CTX *ctx, const char *keylog_file) 1521{ 1522 /* Close any open files */ 1523 BIO_free_all(bio_keylog); 1524 bio_keylog = NULL; 1525 1526 if (ctx == NULL || keylog_file == NULL) { 1527 /* Keylogging is disabled, OK. */ 1528 return 0; 1529 } 1530 1531 /* 1532 * Append rather than write in order to allow concurrent modification. 1533 * Furthermore, this preserves existing keylog files which is useful when 1534 * the tool is run multiple times. 1535 */ 1536 bio_keylog = BIO_new_file(keylog_file, "a"); 1537 if (bio_keylog == NULL) { 1538 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file); 1539 return 1; 1540 } 1541 1542 /* Write a header for seekable, empty files (this excludes pipes). */ 1543 if (BIO_tell(bio_keylog) == 0) { 1544 BIO_puts(bio_keylog, 1545 "# SSL/TLS secrets log file, generated by OpenSSL\n"); 1546 (void)BIO_flush(bio_keylog); 1547 } 1548 SSL_CTX_set_keylog_callback(ctx, keylog_callback); 1549 return 0; 1550} 1551 1552void print_ca_names(BIO *bio, SSL *s) 1553{ 1554 const char *cs = SSL_is_server(s) ? "server" : "client"; 1555 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s); 1556 int i; 1557 1558 if (sk == NULL || sk_X509_NAME_num(sk) == 0) { 1559 if (!SSL_is_server(s)) 1560 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs); 1561 return; 1562 } 1563 1564 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs); 1565 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 1566 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt()); 1567 BIO_write(bio, "\n", 1); 1568 } 1569} 1570