1 /* $OpenBSD: s_server.c,v 1.56 2023/03/06 14:32:06 tb Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 /* Until the key-gen callbacks are modified to use newer prototypes, we allow 144 * deprecated functions for openssl-internal code */ 145 #ifdef OPENSSL_NO_DEPRECATED 146 #undef OPENSSL_NO_DEPRECATED 147 #endif 148 149 #include <sys/types.h> 150 #include <sys/socket.h> 151 152 #include <assert.h> 153 #include <ctype.h> 154 #include <stdio.h> 155 #include <stdlib.h> 156 #include <limits.h> 157 #include <string.h> 158 #include <unistd.h> 159 #include <poll.h> 160 161 #include "apps.h" 162 163 #include <openssl/bn.h> 164 #include <openssl/err.h> 165 #include <openssl/lhash.h> 166 #include <openssl/ocsp.h> 167 #include <openssl/pem.h> 168 #include <openssl/ssl.h> 169 #include <openssl/x509.h> 170 171 #ifndef OPENSSL_NO_DH 172 #include <openssl/dh.h> 173 #endif 174 175 #include <openssl/rsa.h> 176 177 #include "s_apps.h" 178 #include "timeouts.h" 179 180 static void s_server_init(void); 181 static void sv_usage(void); 182 static void print_stats(BIO *bp, SSL_CTX *ctx); 183 static int sv_body(int s, unsigned char *context); 184 static void close_accept_socket(void); 185 static int init_ssl_connection(SSL *s); 186 #ifndef OPENSSL_NO_DH 187 static DH *load_dh_param(const char *dhfile); 188 #endif 189 static int www_body(int s, unsigned char *context); 190 static int generate_session_id(const SSL *ssl, unsigned char *id, 191 unsigned int *id_len); 192 static int ssl_servername_cb(SSL *s, int *ad, void *arg); 193 static int cert_status_cb(SSL * s, void *arg); 194 static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, 195 const unsigned char *in, unsigned int inlen, void *arg); 196 /* static int load_CA(SSL_CTX *ctx, char *file);*/ 197 198 #define BUFSIZZ 16*1024 199 static int bufsize = BUFSIZZ; 200 static int accept_socket = -1; 201 202 #define TEST_CERT "server.pem" 203 #define TEST_CERT2 "server2.pem" 204 205 static int s_server_session_id_context = 1; /* anything will do */ 206 static SSL_CTX *ctx = NULL; 207 static SSL_CTX *ctx2 = NULL; 208 static BIO *bio_s_out = NULL; 209 210 static int local_argc = 0; 211 static char **local_argv; 212 213 /* This is a context that we pass to callbacks */ 214 typedef struct tlsextctx_st { 215 char *servername; 216 BIO *biodebug; 217 int extension_error; 218 } tlsextctx; 219 220 /* Structure passed to cert status callback */ 221 typedef struct tlsextstatusctx_st { 222 /* Default responder to use */ 223 char *host, *path, *port; 224 int use_ssl; 225 int timeout; 226 BIO *err; 227 int verbose; 228 } tlsextstatusctx; 229 230 /* This the context that we pass to alpn_cb */ 231 typedef struct tlsextalpnctx_st { 232 unsigned char *data; 233 unsigned short len; 234 } tlsextalpnctx; 235 236 static struct { 237 char *alpn_in; 238 char *npn_in; /* Ignored. */ 239 int bugs; 240 char *CAfile; 241 char *CApath; 242 #ifndef OPENSSL_NO_DTLS 243 int cert_chain; 244 #endif 245 char *cert_file; 246 char *cert_file2; 247 int cert_format; 248 char *cipher; 249 unsigned char *context; 250 int crlf; 251 char *dcert_file; 252 int dcert_format; 253 int debug; 254 char *dhfile; 255 char *dkey_file; 256 int dkey_format; 257 char *dpassarg; 258 int enable_timeouts; 259 const char *errstr; 260 char *groups_in; 261 char *key_file; 262 char *key_file2; 263 int key_format; 264 char *keymatexportlabel; 265 int keymatexportlen; 266 uint16_t max_version; 267 uint16_t min_version; 268 const SSL_METHOD *meth; 269 int msg; 270 int naccept; 271 char *named_curve; 272 int nbio; 273 int nbio_test; 274 int no_cache; 275 int nocert; 276 int no_dhe; 277 int no_ecdhe; 278 int no_tmp_rsa; /* No-op. */ 279 int off; 280 char *passarg; 281 short port; 282 int quiet; 283 int server_verify; 284 char *session_id_prefix; 285 long socket_mtu; 286 int socket_type; 287 #ifndef OPENSSL_NO_SRTP 288 char *srtp_profiles; 289 #endif 290 int state; 291 tlsextstatusctx tlscstatp; 292 tlsextctx tlsextcbp; 293 int tlsextdebug; 294 int tlsextstatus; 295 X509_VERIFY_PARAM *vpm; 296 int www; 297 } cfg; 298 299 static int 300 s_server_opt_context(char *arg) 301 { 302 cfg.context = (unsigned char *) arg; 303 return (0); 304 } 305 306 static int 307 s_server_opt_keymatexportlen(char *arg) 308 { 309 cfg.keymatexportlen = strtonum(arg, 1, INT_MAX, 310 &cfg.errstr); 311 if (cfg.errstr != NULL) { 312 BIO_printf(bio_err, "invalid argument %s: %s\n", 313 arg, cfg.errstr); 314 return (1); 315 } 316 return (0); 317 } 318 319 #ifndef OPENSSL_NO_DTLS 320 static int 321 s_server_opt_mtu(char *arg) 322 { 323 cfg.socket_mtu = strtonum(arg, 0, LONG_MAX, 324 &cfg.errstr); 325 if (cfg.errstr != NULL) { 326 BIO_printf(bio_err, "invalid argument %s: %s\n", 327 arg, cfg.errstr); 328 return (1); 329 } 330 return (0); 331 } 332 #endif 333 334 #ifndef OPENSSL_NO_DTLS 335 static int 336 s_server_opt_protocol_version_dtls(void) 337 { 338 cfg.meth = DTLS_server_method(); 339 cfg.socket_type = SOCK_DGRAM; 340 return (0); 341 } 342 #endif 343 344 #ifndef OPENSSL_NO_DTLS1 345 static int 346 s_server_opt_protocol_version_dtls1(void) 347 { 348 cfg.meth = DTLS_server_method(); 349 cfg.min_version = DTLS1_VERSION; 350 cfg.max_version = DTLS1_VERSION; 351 cfg.socket_type = SOCK_DGRAM; 352 return (0); 353 } 354 #endif 355 356 #ifndef OPENSSL_NO_DTLS1_2 357 static int 358 s_server_opt_protocol_version_dtls1_2(void) 359 { 360 cfg.meth = DTLS_server_method(); 361 cfg.min_version = DTLS1_2_VERSION; 362 cfg.max_version = DTLS1_2_VERSION; 363 cfg.socket_type = SOCK_DGRAM; 364 return (0); 365 } 366 #endif 367 368 static int 369 s_server_opt_protocol_version_tls1(void) 370 { 371 cfg.min_version = TLS1_VERSION; 372 cfg.max_version = TLS1_VERSION; 373 return (0); 374 } 375 376 static int 377 s_server_opt_protocol_version_tls1_1(void) 378 { 379 cfg.min_version = TLS1_1_VERSION; 380 cfg.max_version = TLS1_1_VERSION; 381 return (0); 382 } 383 384 static int 385 s_server_opt_protocol_version_tls1_2(void) 386 { 387 cfg.min_version = TLS1_2_VERSION; 388 cfg.max_version = TLS1_2_VERSION; 389 return (0); 390 } 391 392 static int 393 s_server_opt_protocol_version_tls1_3(void) 394 { 395 cfg.min_version = TLS1_3_VERSION; 396 cfg.max_version = TLS1_3_VERSION; 397 return (0); 398 } 399 400 static int 401 s_server_opt_nbio_test(void) 402 { 403 cfg.nbio = 1; 404 cfg.nbio_test = 1; 405 return (0); 406 } 407 408 static int 409 s_server_opt_port(char *arg) 410 { 411 if (!extract_port(arg, &cfg.port)) 412 return (1); 413 return (0); 414 } 415 416 static int 417 s_server_opt_status_timeout(char *arg) 418 { 419 cfg.tlsextstatus = 1; 420 cfg.tlscstatp.timeout = strtonum(arg, 0, INT_MAX, 421 &cfg.errstr); 422 if (cfg.errstr != NULL) { 423 BIO_printf(bio_err, "invalid argument %s: %s\n", 424 arg, cfg.errstr); 425 return (1); 426 } 427 return (0); 428 } 429 430 static int 431 s_server_opt_status_url(char *arg) 432 { 433 cfg.tlsextstatus = 1; 434 if (!OCSP_parse_url(arg, &cfg.tlscstatp.host, 435 &cfg.tlscstatp.port, &cfg.tlscstatp.path, 436 &cfg.tlscstatp.use_ssl)) { 437 BIO_printf(bio_err, "Error parsing URL\n"); 438 return (1); 439 } 440 return (0); 441 } 442 443 static int 444 s_server_opt_status_verbose(void) 445 { 446 cfg.tlsextstatus = 1; 447 cfg.tlscstatp.verbose = 1; 448 return (0); 449 } 450 451 static int 452 s_server_opt_verify(char *arg) 453 { 454 cfg.server_verify = SSL_VERIFY_PEER | 455 SSL_VERIFY_CLIENT_ONCE; 456 verify_depth = strtonum(arg, 0, INT_MAX, &cfg.errstr); 457 if (cfg.errstr != NULL) { 458 BIO_printf(bio_err, "invalid argument %s: %s\n", 459 arg, cfg.errstr); 460 return (1); 461 } 462 BIO_printf(bio_err, "verify depth is %d\n", verify_depth); 463 return (0); 464 } 465 466 static int 467 s_server_opt_verify_fail(char *arg) 468 { 469 cfg.server_verify = SSL_VERIFY_PEER | 470 SSL_VERIFY_FAIL_IF_NO_PEER_CERT | SSL_VERIFY_CLIENT_ONCE; 471 verify_depth = strtonum(arg, 0, INT_MAX, &cfg.errstr); 472 if (cfg.errstr != NULL) { 473 BIO_printf(bio_err, "invalid argument %s: %s\n", 474 arg, cfg.errstr); 475 return (1); 476 } 477 BIO_printf(bio_err, "verify depth is %d, must return a certificate\n", 478 verify_depth); 479 return (0); 480 } 481 482 static int 483 s_server_opt_verify_param(int argc, char **argv, int *argsused) 484 { 485 char **pargs = argv; 486 int pargc = argc; 487 int badarg = 0; 488 489 if (!args_verify(&pargs, &pargc, &badarg, bio_err, 490 &cfg.vpm)) { 491 BIO_printf(bio_err, "unknown option %s\n", *argv); 492 return (1); 493 } 494 if (badarg) 495 return (1); 496 497 *argsused = argc - pargc; 498 return (0); 499 } 500 501 static const struct option s_server_options[] = { 502 { 503 .name = "4", 504 .type = OPTION_DISCARD, 505 }, 506 { 507 .name = "6", 508 .type = OPTION_DISCARD, 509 }, 510 { 511 .name = "accept", 512 .argname = "port", 513 .desc = "Port to accept on (default is 4433)", 514 .type = OPTION_ARG_FUNC, 515 .opt.argfunc = s_server_opt_port, 516 }, 517 { 518 .name = "alpn", 519 .argname = "protocols", 520 .desc = "Set the advertised protocols for the ALPN extension" 521 " (comma-separated list)", 522 .type = OPTION_ARG, 523 .opt.arg = &cfg.alpn_in, 524 }, 525 { 526 .name = "bugs", 527 .desc = "Turn on SSL bug compatibility", 528 .type = OPTION_FLAG, 529 .opt.flag = &cfg.bugs, 530 }, 531 { 532 .name = "CAfile", 533 .argname = "file", 534 .desc = "PEM format file of CA certificates", 535 .type = OPTION_ARG, 536 .opt.arg = &cfg.CAfile, 537 }, 538 { 539 .name = "CApath", 540 .argname = "directory", 541 .desc = "PEM format directory of CA certificates", 542 .type = OPTION_ARG, 543 .opt.arg = &cfg.CApath, 544 }, 545 { 546 .name = "cert", 547 .argname = "file", 548 .desc = "Certificate file to use\n" 549 "(default is " TEST_CERT ")", 550 .type = OPTION_ARG, 551 .opt.arg = &cfg.cert_file, 552 }, 553 { 554 .name = "cert2", 555 .argname = "file", 556 .desc = "Certificate file to use for servername\n" 557 "(default is " TEST_CERT2 ")", 558 .type = OPTION_ARG, 559 .opt.arg = &cfg.cert_file2, 560 }, 561 { 562 .name = "certform", 563 .argname = "fmt", 564 .desc = "Certificate format (PEM or DER) PEM default", 565 .type = OPTION_ARG_FORMAT, 566 .opt.value = &cfg.cert_format, 567 }, 568 #ifndef OPENSSL_NO_DTLS 569 { 570 .name = "chain", 571 .type = OPTION_FLAG, 572 .opt.flag = &cfg.cert_chain, 573 }, 574 #endif 575 { 576 .name = "cipher", 577 .argname = "list", 578 .desc = "List of ciphers to enable (see `openssl ciphers`)", 579 .type = OPTION_ARG, 580 .opt.arg = &cfg.cipher, 581 }, 582 { 583 .name = "context", 584 .argname = "id", 585 .desc = "Set session ID context", 586 .type = OPTION_ARG_FUNC, 587 .opt.argfunc = s_server_opt_context, 588 }, 589 { 590 .name = "crlf", 591 .desc = "Convert LF from terminal into CRLF", 592 .type = OPTION_FLAG, 593 .opt.flag = &cfg.crlf, 594 }, 595 { 596 .name = "dcert", 597 .argname = "file", 598 .desc = "Second certificate file to use (usually for DSA)", 599 .type = OPTION_ARG, 600 .opt.arg = &cfg.dcert_file, 601 }, 602 { 603 .name = "dcertform", 604 .argname = "fmt", 605 .desc = "Second certificate format (PEM or DER) PEM default", 606 .type = OPTION_ARG_FORMAT, 607 .opt.value = &cfg.dcert_format, 608 }, 609 { 610 .name = "debug", 611 .desc = "Print more output", 612 .type = OPTION_FLAG, 613 .opt.flag = &cfg.debug, 614 }, 615 { 616 .name = "dhparam", 617 .argname = "file", 618 .desc = "DH parameter file to use, in cert file if not specified", 619 .type = OPTION_ARG, 620 .opt.arg = &cfg.dhfile, 621 }, 622 { 623 .name = "dkey", 624 .argname = "file", 625 .desc = "Second private key file to use (usually for DSA)", 626 .type = OPTION_ARG, 627 .opt.arg = &cfg.dkey_file, 628 }, 629 { 630 .name = "dkeyform", 631 .argname = "fmt", 632 .desc = "Second key format (PEM or DER) PEM default", 633 .type = OPTION_ARG_FORMAT, 634 .opt.value = &cfg.dkey_format, 635 }, 636 { 637 .name = "dpass", 638 .argname = "arg", 639 .desc = "Second private key file pass phrase source", 640 .type = OPTION_ARG, 641 .opt.arg = &cfg.dpassarg, 642 }, 643 #ifndef OPENSSL_NO_DTLS 644 { 645 .name = "dtls", 646 .desc = "Use any version of DTLS", 647 .type = OPTION_FUNC, 648 .opt.func = s_server_opt_protocol_version_dtls, 649 }, 650 #endif 651 #ifndef OPENSSL_NO_DTLS1 652 { 653 .name = "dtls1", 654 .desc = "Just use DTLSv1", 655 .type = OPTION_FUNC, 656 .opt.func = s_server_opt_protocol_version_dtls1, 657 }, 658 #endif 659 #ifndef OPENSSL_NO_DTLS1_2 660 { 661 .name = "dtls1_2", 662 .desc = "Just use DTLSv1.2", 663 .type = OPTION_FUNC, 664 .opt.func = s_server_opt_protocol_version_dtls1_2, 665 }, 666 #endif 667 { 668 .name = "groups", 669 .argname = "list", 670 .desc = "Specify EC groups (colon-separated list)", 671 .type = OPTION_ARG, 672 .opt.arg = &cfg.groups_in, 673 }, 674 { 675 .name = "HTTP", 676 .desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>", 677 .type = OPTION_VALUE, 678 .opt.value = &cfg.www, 679 .value = 3, 680 }, 681 { 682 .name = "id_prefix", 683 .argname = "arg", 684 .desc = "Generate SSL/TLS session IDs prefixed by 'arg'", 685 .type = OPTION_ARG, 686 .opt.arg = &cfg.session_id_prefix, 687 }, 688 { 689 .name = "key", 690 .argname = "file", 691 .desc = "Private Key file to use, in cert file if\n" 692 "not specified (default is " TEST_CERT ")", 693 .type = OPTION_ARG, 694 .opt.arg = &cfg.key_file, 695 }, 696 { 697 .name = "key2", 698 .argname = "file", 699 .desc = "Private Key file to use for servername, in cert file if\n" 700 "not specified (default is " TEST_CERT2 ")", 701 .type = OPTION_ARG, 702 .opt.arg = &cfg.key_file2, 703 }, 704 { 705 .name = "keyform", 706 .argname = "fmt", 707 .desc = "Key format (PEM or DER) PEM default", 708 .type = OPTION_ARG_FORMAT, 709 .opt.value = &cfg.key_format, 710 }, 711 { 712 .name = "keymatexport", 713 .argname = "label", 714 .desc = "Export keying material using label", 715 .type = OPTION_ARG, 716 .opt.arg = &cfg.keymatexportlabel, 717 }, 718 { 719 .name = "keymatexportlen", 720 .argname = "len", 721 .desc = "Export len bytes of keying material (default 20)", 722 .type = OPTION_ARG_FUNC, 723 .opt.argfunc = s_server_opt_keymatexportlen, 724 }, 725 { 726 .name = "legacy_renegotiation", 727 .type = OPTION_DISCARD, 728 }, 729 { 730 .name = "msg", 731 .desc = "Show protocol messages", 732 .type = OPTION_FLAG, 733 .opt.flag = &cfg.msg, 734 }, 735 #ifndef OPENSSL_NO_DTLS 736 { 737 .name = "mtu", 738 .argname = "mtu", 739 .desc = "Set link layer MTU", 740 .type = OPTION_ARG_FUNC, 741 .opt.argfunc = s_server_opt_mtu, 742 }, 743 #endif 744 { 745 .name = "naccept", 746 .argname = "num", 747 .desc = "Terminate after num connections", 748 .type = OPTION_ARG_INT, 749 .opt.value = &cfg.naccept 750 }, 751 { 752 .name = "named_curve", 753 .argname = "arg", 754 .type = OPTION_ARG, 755 .opt.arg = &cfg.named_curve, 756 }, 757 { 758 .name = "nbio", 759 .desc = "Run with non-blocking I/O", 760 .type = OPTION_FLAG, 761 .opt.flag = &cfg.nbio, 762 }, 763 { 764 .name = "nbio_test", 765 .desc = "Test with the non-blocking test bio", 766 .type = OPTION_FUNC, 767 .opt.func = s_server_opt_nbio_test, 768 }, 769 { 770 .name = "nextprotoneg", 771 .argname = "arg", 772 .type = OPTION_ARG, 773 .opt.arg = &cfg.npn_in, /* Ignored. */ 774 }, 775 { 776 .name = "no_cache", 777 .desc = "Disable session cache", 778 .type = OPTION_FLAG, 779 .opt.flag = &cfg.no_cache, 780 }, 781 { 782 .name = "no_comp", 783 .desc = "Disable SSL/TLS compression", 784 .type = OPTION_VALUE_OR, 785 .opt.value = &cfg.off, 786 .value = SSL_OP_NO_COMPRESSION, 787 }, 788 { 789 .name = "no_dhe", 790 .desc = "Disable ephemeral DH", 791 .type = OPTION_FLAG, 792 .opt.flag = &cfg.no_dhe, 793 }, 794 { 795 .name = "no_ecdhe", 796 .desc = "Disable ephemeral ECDH", 797 .type = OPTION_FLAG, 798 .opt.flag = &cfg.no_ecdhe, 799 }, 800 { 801 .name = "no_ticket", 802 .desc = "Disable use of RFC4507bis session tickets", 803 .type = OPTION_VALUE_OR, 804 .opt.value = &cfg.off, 805 .value = SSL_OP_NO_TICKET, 806 }, 807 { 808 .name = "no_ssl2", 809 .type = OPTION_VALUE_OR, 810 .opt.value = &cfg.off, 811 .value = SSL_OP_NO_SSLv2, 812 }, 813 { 814 .name = "no_ssl3", 815 .type = OPTION_VALUE_OR, 816 .opt.value = &cfg.off, 817 .value = SSL_OP_NO_SSLv3, 818 }, 819 { 820 .name = "no_tls1", 821 .desc = "Just disable TLSv1", 822 .type = OPTION_VALUE_OR, 823 .opt.value = &cfg.off, 824 .value = SSL_OP_NO_TLSv1, 825 }, 826 { 827 .name = "no_tls1_1", 828 .desc = "Just disable TLSv1.1", 829 .type = OPTION_VALUE_OR, 830 .opt.value = &cfg.off, 831 .value = SSL_OP_NO_TLSv1_1, 832 }, 833 { 834 .name = "no_tls1_2", 835 .desc = "Just disable TLSv1.2", 836 .type = OPTION_VALUE_OR, 837 .opt.value = &cfg.off, 838 .value = SSL_OP_NO_TLSv1_2, 839 }, 840 { 841 .name = "no_tls1_3", 842 .desc = "Just disable TLSv1.3", 843 .type = OPTION_VALUE_OR, 844 .opt.value = &cfg.off, 845 .value = SSL_OP_NO_TLSv1_3, 846 }, 847 { 848 .name = "no_tmp_rsa", 849 .type = OPTION_DISCARD, 850 }, 851 { 852 .name = "nocert", 853 .desc = "Don't use any certificates (Anon-DH)", 854 .type = OPTION_FLAG, 855 .opt.flag = &cfg.nocert, 856 }, 857 { 858 .name = "pass", 859 .argname = "arg", 860 .desc = "Private key file pass phrase source", 861 .type = OPTION_ARG, 862 .opt.arg = &cfg.passarg, 863 }, 864 { 865 .name = "port", 866 .argname = "port", 867 .type = OPTION_ARG_FUNC, 868 .opt.argfunc = s_server_opt_port, 869 }, 870 { 871 .name = "quiet", 872 .desc = "Inhibit printing of session and certificate information", 873 .type = OPTION_FLAG, 874 .opt.flag = &cfg.quiet, 875 }, 876 { 877 .name = "servername", 878 .argname = "name", 879 .desc = "Servername for HostName TLS extension", 880 .type = OPTION_ARG, 881 .opt.arg = &cfg.tlsextcbp.servername, 882 }, 883 { 884 .name = "servername_fatal", 885 .desc = "On mismatch send fatal alert (default warning alert)", 886 .type = OPTION_VALUE, 887 .opt.value = &cfg.tlsextcbp.extension_error, 888 .value = SSL_TLSEXT_ERR_ALERT_FATAL, 889 }, 890 { 891 .name = "serverpref", 892 .desc = "Use server's cipher preferences", 893 .type = OPTION_VALUE_OR, 894 .opt.value = &cfg.off, 895 .value = SSL_OP_CIPHER_SERVER_PREFERENCE, 896 }, 897 { 898 .name = "state", 899 .desc = "Print the SSL states", 900 .type = OPTION_FLAG, 901 .opt.flag = &cfg.state, 902 }, 903 { 904 .name = "status", 905 .desc = "Respond to certificate status requests", 906 .type = OPTION_FLAG, 907 .opt.flag = &cfg.tlsextstatus, 908 }, 909 { 910 .name = "status_timeout", 911 .argname = "nsec", 912 .desc = "Status request responder timeout", 913 .type = OPTION_ARG_FUNC, 914 .opt.argfunc = s_server_opt_status_timeout, 915 }, 916 { 917 .name = "status_url", 918 .argname = "url", 919 .desc = "Status request fallback URL", 920 .type = OPTION_ARG_FUNC, 921 .opt.argfunc = s_server_opt_status_url, 922 }, 923 { 924 .name = "status_verbose", 925 .desc = "Enable status request verbose printout", 926 .type = OPTION_FUNC, 927 .opt.func = s_server_opt_status_verbose, 928 }, 929 #ifndef OPENSSL_NO_DTLS 930 { 931 .name = "timeout", 932 .desc = "Enable timeouts", 933 .type = OPTION_FLAG, 934 .opt.flag = &cfg.enable_timeouts, 935 }, 936 #endif 937 { 938 .name = "tls1", 939 .desc = "Just talk TLSv1", 940 .type = OPTION_FUNC, 941 .opt.func = s_server_opt_protocol_version_tls1, 942 }, 943 { 944 .name = "tls1_1", 945 .desc = "Just talk TLSv1.1", 946 .type = OPTION_FUNC, 947 .opt.func = s_server_opt_protocol_version_tls1_1, 948 }, 949 { 950 .name = "tls1_2", 951 .desc = "Just talk TLSv1.2", 952 .type = OPTION_FUNC, 953 .opt.func = s_server_opt_protocol_version_tls1_2, 954 }, 955 { 956 .name = "tls1_3", 957 .desc = "Just talk TLSv1.3", 958 .type = OPTION_FUNC, 959 .opt.func = s_server_opt_protocol_version_tls1_3, 960 }, 961 { 962 .name = "tlsextdebug", 963 .desc = "Hex dump of all TLS extensions received", 964 .type = OPTION_FLAG, 965 .opt.flag = &cfg.tlsextdebug, 966 }, 967 #ifndef OPENSSL_NO_SRTP 968 { 969 .name = "use_srtp", 970 .argname = "profiles", 971 .desc = "Offer SRTP key management with a colon-separated profile list", 972 .type = OPTION_ARG, 973 .opt.arg = &cfg.srtp_profiles, 974 }, 975 #endif 976 { 977 .name = "Verify", 978 .argname = "depth", 979 .desc = "Turn on peer certificate verification, must have a cert", 980 .type = OPTION_ARG_FUNC, 981 .opt.argfunc = s_server_opt_verify_fail, 982 }, 983 { 984 .name = "verify", 985 .argname = "depth", 986 .desc = "Turn on peer certificate verification", 987 .type = OPTION_ARG_FUNC, 988 .opt.argfunc = s_server_opt_verify, 989 }, 990 { 991 .name = "verify_return_error", 992 .desc = "Return verification error", 993 .type = OPTION_FLAG, 994 .opt.flag = &verify_return_error, 995 }, 996 { 997 .name = "WWW", 998 .desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>", 999 .type = OPTION_VALUE, 1000 .opt.value = &cfg.www, 1001 .value = 2, 1002 }, 1003 { 1004 .name = "www", 1005 .desc = "Respond to a 'GET /' with a status page", 1006 .type = OPTION_VALUE, 1007 .opt.value = &cfg.www, 1008 .value = 1, 1009 }, 1010 { 1011 .name = NULL, 1012 .desc = "", 1013 .type = OPTION_ARGV_FUNC, 1014 .opt.argvfunc = s_server_opt_verify_param, 1015 }, 1016 { NULL }, 1017 }; 1018 1019 static void 1020 s_server_init(void) 1021 { 1022 accept_socket = -1; 1023 cfg.cipher = NULL; 1024 cfg.server_verify = SSL_VERIFY_NONE; 1025 cfg.dcert_file = NULL; 1026 cfg.dkey_file = NULL; 1027 cfg.cert_file = TEST_CERT; 1028 cfg.key_file = NULL; 1029 cfg.cert_file2 = TEST_CERT2; 1030 cfg.key_file2 = NULL; 1031 ctx2 = NULL; 1032 cfg.nbio = 0; 1033 cfg.nbio_test = 0; 1034 ctx = NULL; 1035 cfg.www = 0; 1036 1037 bio_s_out = NULL; 1038 cfg.debug = 0; 1039 cfg.msg = 0; 1040 cfg.quiet = 0; 1041 } 1042 1043 static void 1044 sv_usage(void) 1045 { 1046 fprintf(stderr, "usage: s_server " 1047 "[-accept port] [-alpn protocols] [-bugs] [-CAfile file]\n" 1048 " [-CApath directory] [-cert file] [-cert2 file]\n" 1049 " [-certform der | pem] [-cipher cipherlist]\n" 1050 " [-context id] [-crl_check] [-crl_check_all] [-crlf]\n" 1051 " [-dcert file] [-dcertform der | pem] [-debug]\n" 1052 " [-dhparam file] [-dkey file] [-dkeyform der | pem]\n" 1053 " [-dpass arg] [-dtls] [-dtls1] [-dtls1_2] [-groups list] [-HTTP]\n" 1054 " [-id_prefix arg] [-key keyfile] [-key2 keyfile]\n" 1055 " [-keyform der | pem] [-keymatexport label]\n" 1056 " [-keymatexportlen len] [-msg] [-mtu mtu] [-naccept num]\n" 1057 " [-named_curve arg] [-nbio] [-nbio_test] [-no_cache]\n" 1058 " [-no_dhe] [-no_ecdhe] [-no_ticket] [-no_tls1]\n" 1059 " [-no_tls1_1] [-no_tls1_2] [-no_tls1_3] [-no_tmp_rsa]\n" 1060 " [-nocert] [-pass arg] [-quiet] [-servername name]\n" 1061 " [-servername_fatal] [-serverpref] [-state] [-status]\n" 1062 " [-status_timeout nsec] [-status_url url]\n" 1063 " [-status_verbose] [-timeout] [-tls1] [-tls1_1]\n" 1064 " [-tls1_2] [-tls1_3] [-tlsextdebug] [-use_srtp profiles]\n" 1065 " [-Verify depth] [-verify depth] [-verify_return_error]\n" 1066 " [-WWW] [-www]\n"); 1067 fprintf(stderr, "\n"); 1068 options_usage(s_server_options); 1069 fprintf(stderr, "\n"); 1070 } 1071 1072 int 1073 s_server_main(int argc, char *argv[]) 1074 { 1075 int ret = 1; 1076 char *pass = NULL; 1077 char *dpass = NULL; 1078 X509 *s_cert = NULL, *s_dcert = NULL; 1079 EVP_PKEY *s_key = NULL, *s_dkey = NULL; 1080 EVP_PKEY *s_key2 = NULL; 1081 X509 *s_cert2 = NULL; 1082 tlsextalpnctx alpn_ctx = { NULL, 0 }; 1083 1084 if (pledge("stdio rpath inet dns tty", NULL) == -1) { 1085 perror("pledge"); 1086 exit(1); 1087 } 1088 1089 memset(&cfg, 0, sizeof(cfg)); 1090 cfg.keymatexportlen = 20; 1091 cfg.meth = TLS_server_method(); 1092 cfg.naccept = -1; 1093 cfg.port = PORT; 1094 cfg.cert_file = TEST_CERT; 1095 cfg.cert_file2 = TEST_CERT2; 1096 cfg.cert_format = FORMAT_PEM; 1097 cfg.dcert_format = FORMAT_PEM; 1098 cfg.dkey_format = FORMAT_PEM; 1099 cfg.key_format = FORMAT_PEM; 1100 cfg.server_verify = SSL_VERIFY_NONE; 1101 cfg.socket_type = SOCK_STREAM; 1102 cfg.tlscstatp.timeout = -1; 1103 cfg.tlsextcbp.extension_error = 1104 SSL_TLSEXT_ERR_ALERT_WARNING; 1105 1106 local_argc = argc; 1107 local_argv = argv; 1108 1109 s_server_init(); 1110 1111 verify_depth = 0; 1112 1113 if (options_parse(argc, argv, s_server_options, NULL, NULL) != 0) { 1114 if (cfg.errstr == NULL) 1115 sv_usage(); 1116 goto end; 1117 } 1118 1119 if (!app_passwd(bio_err, cfg.passarg, 1120 cfg.dpassarg, &pass, &dpass)) { 1121 BIO_printf(bio_err, "Error getting password\n"); 1122 goto end; 1123 } 1124 if (cfg.key_file == NULL) 1125 cfg.key_file = cfg.cert_file; 1126 if (cfg.key_file2 == NULL) 1127 cfg.key_file2 = cfg.cert_file2; 1128 1129 if (cfg.nocert == 0) { 1130 s_key = load_key(bio_err, cfg.key_file, 1131 cfg.key_format, 0, pass, 1132 "server certificate private key file"); 1133 if (!s_key) { 1134 ERR_print_errors(bio_err); 1135 goto end; 1136 } 1137 s_cert = load_cert(bio_err, cfg.cert_file, 1138 cfg.cert_format, 1139 NULL, "server certificate file"); 1140 1141 if (!s_cert) { 1142 ERR_print_errors(bio_err); 1143 goto end; 1144 } 1145 if (cfg.tlsextcbp.servername) { 1146 s_key2 = load_key(bio_err, cfg.key_file2, 1147 cfg.key_format, 0, pass, 1148 "second server certificate private key file"); 1149 if (!s_key2) { 1150 ERR_print_errors(bio_err); 1151 goto end; 1152 } 1153 s_cert2 = load_cert(bio_err, cfg.cert_file2, 1154 cfg.cert_format, 1155 NULL, "second server certificate file"); 1156 1157 if (!s_cert2) { 1158 ERR_print_errors(bio_err); 1159 goto end; 1160 } 1161 } 1162 } 1163 alpn_ctx.data = NULL; 1164 if (cfg.alpn_in) { 1165 unsigned short len; 1166 alpn_ctx.data = next_protos_parse(&len, 1167 cfg.alpn_in); 1168 if (alpn_ctx.data == NULL) 1169 goto end; 1170 alpn_ctx.len = len; 1171 } 1172 1173 if (cfg.dcert_file) { 1174 1175 if (cfg.dkey_file == NULL) 1176 cfg.dkey_file = cfg.dcert_file; 1177 1178 s_dkey = load_key(bio_err, cfg.dkey_file, 1179 cfg.dkey_format, 1180 0, dpass, "second certificate private key file"); 1181 if (!s_dkey) { 1182 ERR_print_errors(bio_err); 1183 goto end; 1184 } 1185 s_dcert = load_cert(bio_err, cfg.dcert_file, 1186 cfg.dcert_format, 1187 NULL, "second server certificate file"); 1188 1189 if (!s_dcert) { 1190 ERR_print_errors(bio_err); 1191 goto end; 1192 } 1193 } 1194 if (bio_s_out == NULL) { 1195 if (cfg.quiet && !cfg.debug && 1196 !cfg.msg) { 1197 bio_s_out = BIO_new(BIO_s_null()); 1198 } else { 1199 if (bio_s_out == NULL) 1200 bio_s_out = BIO_new_fp(stdout, BIO_NOCLOSE); 1201 } 1202 } 1203 if (cfg.nocert) { 1204 cfg.cert_file = NULL; 1205 cfg.key_file = NULL; 1206 cfg.dcert_file = NULL; 1207 cfg.dkey_file = NULL; 1208 cfg.cert_file2 = NULL; 1209 cfg.key_file2 = NULL; 1210 } 1211 ctx = SSL_CTX_new(cfg.meth); 1212 if (ctx == NULL) { 1213 ERR_print_errors(bio_err); 1214 goto end; 1215 } 1216 1217 SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY); 1218 1219 if (!SSL_CTX_set_min_proto_version(ctx, cfg.min_version)) 1220 goto end; 1221 if (!SSL_CTX_set_max_proto_version(ctx, cfg.max_version)) 1222 goto end; 1223 1224 if (cfg.session_id_prefix) { 1225 if (strlen(cfg.session_id_prefix) >= 32) 1226 BIO_printf(bio_err, 1227 "warning: id_prefix is too long, only one new session will be possible\n"); 1228 else if (strlen(cfg.session_id_prefix) >= 16) 1229 BIO_printf(bio_err, 1230 "warning: id_prefix is too long if you use SSLv2\n"); 1231 if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) { 1232 BIO_printf(bio_err, "error setting 'id_prefix'\n"); 1233 ERR_print_errors(bio_err); 1234 goto end; 1235 } 1236 BIO_printf(bio_err, "id_prefix '%s' set.\n", 1237 cfg.session_id_prefix); 1238 } 1239 SSL_CTX_set_quiet_shutdown(ctx, 1); 1240 if (cfg.bugs) 1241 SSL_CTX_set_options(ctx, SSL_OP_ALL); 1242 SSL_CTX_set_options(ctx, cfg.off); 1243 1244 if (cfg.state) 1245 SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback); 1246 if (cfg.no_cache) 1247 SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF); 1248 else 1249 SSL_CTX_sess_set_cache_size(ctx, 128); 1250 1251 #ifndef OPENSSL_NO_SRTP 1252 if (cfg.srtp_profiles != NULL) 1253 SSL_CTX_set_tlsext_use_srtp(ctx, cfg.srtp_profiles); 1254 #endif 1255 1256 if ((!SSL_CTX_load_verify_locations(ctx, cfg.CAfile, 1257 cfg.CApath)) || 1258 (!SSL_CTX_set_default_verify_paths(ctx))) { 1259 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */ 1260 ERR_print_errors(bio_err); 1261 /* goto end; */ 1262 } 1263 if (cfg.vpm) 1264 SSL_CTX_set1_param(ctx, cfg.vpm); 1265 1266 if (s_cert2) { 1267 ctx2 = SSL_CTX_new(cfg.meth); 1268 if (ctx2 == NULL) { 1269 ERR_print_errors(bio_err); 1270 goto end; 1271 } 1272 1273 if (!SSL_CTX_set_min_proto_version(ctx2, 1274 cfg.min_version)) 1275 goto end; 1276 if (!SSL_CTX_set_max_proto_version(ctx2, 1277 cfg.max_version)) 1278 goto end; 1279 SSL_CTX_clear_mode(ctx2, SSL_MODE_AUTO_RETRY); 1280 } 1281 if (ctx2) { 1282 BIO_printf(bio_s_out, "Setting secondary ctx parameters\n"); 1283 1284 if (cfg.session_id_prefix) { 1285 if (strlen(cfg.session_id_prefix) >= 32) 1286 BIO_printf(bio_err, 1287 "warning: id_prefix is too long, only one new session will be possible\n"); 1288 else if (strlen(cfg.session_id_prefix) >= 16) 1289 BIO_printf(bio_err, 1290 "warning: id_prefix is too long if you use SSLv2\n"); 1291 if (!SSL_CTX_set_generate_session_id(ctx2, 1292 generate_session_id)) { 1293 BIO_printf(bio_err, 1294 "error setting 'id_prefix'\n"); 1295 ERR_print_errors(bio_err); 1296 goto end; 1297 } 1298 BIO_printf(bio_err, "id_prefix '%s' set.\n", 1299 cfg.session_id_prefix); 1300 } 1301 SSL_CTX_set_quiet_shutdown(ctx2, 1); 1302 if (cfg.bugs) 1303 SSL_CTX_set_options(ctx2, SSL_OP_ALL); 1304 SSL_CTX_set_options(ctx2, cfg.off); 1305 1306 if (cfg.state) 1307 SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback); 1308 1309 if (cfg.no_cache) 1310 SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF); 1311 else 1312 SSL_CTX_sess_set_cache_size(ctx2, 128); 1313 1314 if ((!SSL_CTX_load_verify_locations(ctx2, 1315 cfg.CAfile, cfg.CApath)) || 1316 (!SSL_CTX_set_default_verify_paths(ctx2))) { 1317 ERR_print_errors(bio_err); 1318 } 1319 if (cfg.vpm) 1320 SSL_CTX_set1_param(ctx2, cfg.vpm); 1321 } 1322 if (alpn_ctx.data) 1323 SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx); 1324 1325 if (cfg.groups_in != NULL) { 1326 if (SSL_CTX_set1_groups_list(ctx, cfg.groups_in) != 1) { 1327 BIO_printf(bio_err, "Failed to set groups '%s'\n", 1328 cfg.groups_in); 1329 goto end; 1330 } 1331 } 1332 1333 #ifndef OPENSSL_NO_DH 1334 if (!cfg.no_dhe) { 1335 DH *dh = NULL; 1336 1337 if (cfg.dhfile) 1338 dh = load_dh_param(cfg.dhfile); 1339 else if (cfg.cert_file) 1340 dh = load_dh_param(cfg.cert_file); 1341 1342 if (dh != NULL) 1343 BIO_printf(bio_s_out, "Setting temp DH parameters\n"); 1344 else 1345 BIO_printf(bio_s_out, "Using auto DH parameters\n"); 1346 (void) BIO_flush(bio_s_out); 1347 1348 if (dh == NULL) 1349 SSL_CTX_set_dh_auto(ctx, 1); 1350 else if (!SSL_CTX_set_tmp_dh(ctx, dh)) { 1351 BIO_printf(bio_err, 1352 "Error setting temp DH parameters\n"); 1353 ERR_print_errors(bio_err); 1354 DH_free(dh); 1355 goto end; 1356 } 1357 1358 if (ctx2) { 1359 if (!cfg.dhfile) { 1360 DH *dh2 = NULL; 1361 1362 if (cfg.cert_file2 != NULL) 1363 dh2 = load_dh_param( 1364 cfg.cert_file2); 1365 if (dh2 != NULL) { 1366 BIO_printf(bio_s_out, 1367 "Setting temp DH parameters\n"); 1368 (void) BIO_flush(bio_s_out); 1369 1370 DH_free(dh); 1371 dh = dh2; 1372 } 1373 } 1374 if (dh == NULL) 1375 SSL_CTX_set_dh_auto(ctx2, 1); 1376 else if (!SSL_CTX_set_tmp_dh(ctx2, dh)) { 1377 BIO_printf(bio_err, 1378 "Error setting temp DH parameters\n"); 1379 ERR_print_errors(bio_err); 1380 DH_free(dh); 1381 goto end; 1382 } 1383 } 1384 DH_free(dh); 1385 } 1386 #endif 1387 1388 if (!cfg.no_ecdhe && cfg.named_curve != NULL) { 1389 EC_KEY *ecdh = NULL; 1390 int nid; 1391 1392 if ((nid = OBJ_sn2nid(cfg.named_curve)) == 0) { 1393 BIO_printf(bio_err, "unknown curve name (%s)\n", 1394 cfg.named_curve); 1395 goto end; 1396 } 1397 if ((ecdh = EC_KEY_new_by_curve_name(nid)) == NULL) { 1398 BIO_printf(bio_err, "unable to create curve (%s)\n", 1399 cfg.named_curve); 1400 goto end; 1401 } 1402 BIO_printf(bio_s_out, "Setting temp ECDH parameters\n"); 1403 (void) BIO_flush(bio_s_out); 1404 1405 SSL_CTX_set_tmp_ecdh(ctx, ecdh); 1406 if (ctx2) 1407 SSL_CTX_set_tmp_ecdh(ctx2, ecdh); 1408 EC_KEY_free(ecdh); 1409 } 1410 1411 if (!set_cert_key_stuff(ctx, s_cert, s_key)) 1412 goto end; 1413 if (ctx2 && !set_cert_key_stuff(ctx2, s_cert2, s_key2)) 1414 goto end; 1415 if (s_dcert != NULL) { 1416 if (!set_cert_key_stuff(ctx, s_dcert, s_dkey)) 1417 goto end; 1418 } 1419 1420 if (cfg.cipher != NULL) { 1421 if (!SSL_CTX_set_cipher_list(ctx, cfg.cipher)) { 1422 BIO_printf(bio_err, "error setting cipher list\n"); 1423 ERR_print_errors(bio_err); 1424 goto end; 1425 } 1426 if (ctx2 && !SSL_CTX_set_cipher_list(ctx2, 1427 cfg.cipher)) { 1428 BIO_printf(bio_err, "error setting cipher list\n"); 1429 ERR_print_errors(bio_err); 1430 goto end; 1431 } 1432 } 1433 SSL_CTX_set_verify(ctx, cfg.server_verify, verify_callback); 1434 SSL_CTX_set_session_id_context(ctx, 1435 (void *) &s_server_session_id_context, 1436 sizeof s_server_session_id_context); 1437 1438 /* Set DTLS cookie generation and verification callbacks */ 1439 SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback); 1440 SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback); 1441 1442 if (ctx2) { 1443 SSL_CTX_set_verify(ctx2, cfg.server_verify, 1444 verify_callback); 1445 SSL_CTX_set_session_id_context(ctx2, 1446 (void *) &s_server_session_id_context, 1447 sizeof s_server_session_id_context); 1448 1449 cfg.tlsextcbp.biodebug = bio_s_out; 1450 SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb); 1451 SSL_CTX_set_tlsext_servername_arg(ctx2, 1452 &cfg.tlsextcbp); 1453 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb); 1454 SSL_CTX_set_tlsext_servername_arg(ctx, 1455 &cfg.tlsextcbp); 1456 } 1457 1458 if (cfg.CAfile != NULL) { 1459 SSL_CTX_set_client_CA_list(ctx, 1460 SSL_load_client_CA_file(cfg.CAfile)); 1461 if (ctx2) 1462 SSL_CTX_set_client_CA_list(ctx2, 1463 SSL_load_client_CA_file(cfg.CAfile)); 1464 } 1465 BIO_printf(bio_s_out, "ACCEPT\n"); 1466 (void) BIO_flush(bio_s_out); 1467 if (cfg.www) 1468 do_server(cfg.port, cfg.socket_type, 1469 &accept_socket, www_body, cfg.context, 1470 cfg.naccept); 1471 else 1472 do_server(cfg.port, cfg.socket_type, 1473 &accept_socket, sv_body, cfg.context, 1474 cfg.naccept); 1475 print_stats(bio_s_out, ctx); 1476 ret = 0; 1477 end: 1478 SSL_CTX_free(ctx); 1479 X509_free(s_cert); 1480 X509_free(s_dcert); 1481 EVP_PKEY_free(s_key); 1482 EVP_PKEY_free(s_dkey); 1483 free(pass); 1484 free(dpass); 1485 X509_VERIFY_PARAM_free(cfg.vpm); 1486 free(cfg.tlscstatp.host); 1487 free(cfg.tlscstatp.port); 1488 free(cfg.tlscstatp.path); 1489 SSL_CTX_free(ctx2); 1490 X509_free(s_cert2); 1491 EVP_PKEY_free(s_key2); 1492 free(alpn_ctx.data); 1493 if (bio_s_out != NULL) { 1494 BIO_free(bio_s_out); 1495 bio_s_out = NULL; 1496 } 1497 1498 return (ret); 1499 } 1500 1501 static void 1502 print_stats(BIO *bio, SSL_CTX *ssl_ctx) 1503 { 1504 BIO_printf(bio, "%4ld items in the session cache\n", 1505 SSL_CTX_sess_number(ssl_ctx)); 1506 BIO_printf(bio, "%4ld client connects (SSL_connect())\n", 1507 SSL_CTX_sess_connect(ssl_ctx)); 1508 BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n", 1509 SSL_CTX_sess_connect_renegotiate(ssl_ctx)); 1510 BIO_printf(bio, "%4ld client connects that finished\n", 1511 SSL_CTX_sess_connect_good(ssl_ctx)); 1512 BIO_printf(bio, "%4ld server accepts (SSL_accept())\n", 1513 SSL_CTX_sess_accept(ssl_ctx)); 1514 BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n", 1515 SSL_CTX_sess_accept_renegotiate(ssl_ctx)); 1516 BIO_printf(bio, "%4ld server accepts that finished\n", 1517 SSL_CTX_sess_accept_good(ssl_ctx)); 1518 BIO_printf(bio, "%4ld session cache hits\n", 1519 SSL_CTX_sess_hits(ssl_ctx)); 1520 BIO_printf(bio, "%4ld session cache misses\n", 1521 SSL_CTX_sess_misses(ssl_ctx)); 1522 BIO_printf(bio, "%4ld session cache timeouts\n", 1523 SSL_CTX_sess_timeouts(ssl_ctx)); 1524 BIO_printf(bio, "%4ld callback cache hits\n", 1525 SSL_CTX_sess_cb_hits(ssl_ctx)); 1526 BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n", 1527 SSL_CTX_sess_cache_full(ssl_ctx), 1528 SSL_CTX_sess_get_cache_size(ssl_ctx)); 1529 } 1530 1531 static int 1532 sv_body(int s, unsigned char *context) 1533 { 1534 char *buf = NULL; 1535 int ret = 1; 1536 int k, i; 1537 unsigned long l; 1538 SSL *con = NULL; 1539 BIO *sbio; 1540 struct timeval timeout; 1541 1542 if ((buf = malloc(bufsize)) == NULL) { 1543 BIO_printf(bio_err, "out of memory\n"); 1544 goto err; 1545 } 1546 if (cfg.nbio) { 1547 if (!cfg.quiet) 1548 BIO_printf(bio_err, "turning on non blocking io\n"); 1549 if (!BIO_socket_nbio(s, 1)) 1550 ERR_print_errors(bio_err); 1551 } 1552 1553 if (con == NULL) { 1554 con = SSL_new(ctx); 1555 if (cfg.tlsextdebug) { 1556 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1557 SSL_set_tlsext_debug_arg(con, bio_s_out); 1558 } 1559 if (cfg.tlsextstatus) { 1560 SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb); 1561 cfg.tlscstatp.err = bio_err; 1562 SSL_CTX_set_tlsext_status_arg(ctx, 1563 &cfg.tlscstatp); 1564 } 1565 if (context) 1566 SSL_set_session_id_context(con, context, 1567 strlen((char *) context)); 1568 } 1569 SSL_clear(con); 1570 1571 if (SSL_is_dtls(con)) { 1572 sbio = BIO_new_dgram(s, BIO_NOCLOSE); 1573 1574 if (cfg.enable_timeouts) { 1575 timeout.tv_sec = 0; 1576 timeout.tv_usec = DGRAM_RCV_TIMEOUT; 1577 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, 1578 &timeout); 1579 1580 timeout.tv_sec = 0; 1581 timeout.tv_usec = DGRAM_SND_TIMEOUT; 1582 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, 1583 &timeout); 1584 } 1585 if (cfg.socket_mtu > 28) { 1586 SSL_set_options(con, SSL_OP_NO_QUERY_MTU); 1587 SSL_set_mtu(con, cfg.socket_mtu - 28); 1588 } else 1589 /* want to do MTU discovery */ 1590 BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); 1591 1592 /* turn on cookie exchange */ 1593 SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE); 1594 } else 1595 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1596 1597 if (cfg.nbio_test) { 1598 BIO *test; 1599 1600 test = BIO_new(BIO_f_nbio_test()); 1601 sbio = BIO_push(test, sbio); 1602 } 1603 1604 SSL_set_bio(con, sbio, sbio); 1605 SSL_set_accept_state(con); 1606 /* SSL_set_fd(con,s); */ 1607 1608 if (cfg.debug) { 1609 SSL_set_debug(con, 1); 1610 BIO_set_callback(SSL_get_rbio(con), bio_dump_callback); 1611 BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out); 1612 } 1613 if (cfg.msg) { 1614 SSL_set_msg_callback(con, msg_cb); 1615 SSL_set_msg_callback_arg(con, bio_s_out); 1616 } 1617 if (cfg.tlsextdebug) { 1618 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1619 SSL_set_tlsext_debug_arg(con, bio_s_out); 1620 } 1621 1622 for (;;) { 1623 int read_from_terminal; 1624 int read_from_sslcon; 1625 struct pollfd pfd[2]; 1626 int ptimeout; 1627 1628 read_from_terminal = 0; 1629 read_from_sslcon = SSL_pending(con); 1630 1631 if (!read_from_sslcon) { 1632 pfd[0].fd = fileno(stdin); 1633 pfd[0].events = POLLIN; 1634 pfd[1].fd = s; 1635 pfd[1].events = POLLIN; 1636 1637 if (SSL_is_dtls(con) && 1638 DTLSv1_get_timeout(con, &timeout)) 1639 ptimeout = timeout.tv_sec * 1000 + 1640 timeout.tv_usec / 1000; 1641 else 1642 ptimeout = -1; 1643 1644 i = poll(pfd, 2, ptimeout); 1645 1646 if (SSL_is_dtls(con) && 1647 DTLSv1_handle_timeout(con) > 0) 1648 BIO_printf(bio_err, "TIMEOUT occured\n"); 1649 if (i <= 0) 1650 continue; 1651 if (pfd[0].revents) { 1652 if ((pfd[0].revents & (POLLERR|POLLNVAL))) 1653 continue; 1654 read_from_terminal = 1; 1655 } 1656 if (pfd[1].revents) { 1657 if ((pfd[1].revents & (POLLERR|POLLNVAL))) 1658 continue; 1659 read_from_sslcon = 1; 1660 } 1661 } 1662 if (read_from_terminal) { 1663 if (cfg.crlf) { 1664 int j, lf_num; 1665 1666 i = read(fileno(stdin), buf, bufsize / 2); 1667 lf_num = 0; 1668 /* both loops are skipped when i <= 0 */ 1669 for (j = 0; j < i; j++) 1670 if (buf[j] == '\n') 1671 lf_num++; 1672 for (j = i - 1; j >= 0; j--) { 1673 buf[j + lf_num] = buf[j]; 1674 if (buf[j] == '\n') { 1675 lf_num--; 1676 i++; 1677 buf[j + lf_num] = '\r'; 1678 } 1679 } 1680 assert(lf_num == 0); 1681 } else 1682 i = read(fileno(stdin), buf, bufsize); 1683 if (!cfg.quiet) { 1684 if ((i <= 0) || (buf[0] == 'Q')) { 1685 BIO_printf(bio_s_out, "DONE\n"); 1686 shutdown(s, SHUT_RD); 1687 close(s); 1688 close_accept_socket(); 1689 ret = -11; 1690 goto err; 1691 } 1692 if ((i <= 0) || (buf[0] == 'q')) { 1693 BIO_printf(bio_s_out, "DONE\n"); 1694 if (!SSL_is_dtls(con)) { 1695 shutdown(s, SHUT_RD); 1696 close(s); 1697 } 1698 /* 1699 * close_accept_socket(); ret= -11; 1700 */ 1701 goto err; 1702 } 1703 if ((buf[0] == 'r') && 1704 ((buf[1] == '\n') || (buf[1] == '\r'))) { 1705 SSL_renegotiate(con); 1706 i = SSL_do_handshake(con); 1707 printf("SSL_do_handshake -> %d\n", i); 1708 i = 0; /* 13; */ 1709 continue; 1710 /* 1711 * RE-NEGOTIATE\n"); 1712 */ 1713 } 1714 if ((buf[0] == 'R') && 1715 ((buf[1] == '\n') || (buf[1] == '\r'))) { 1716 SSL_set_verify(con, 1717 SSL_VERIFY_PEER | 1718 SSL_VERIFY_CLIENT_ONCE, 1719 NULL); 1720 SSL_renegotiate(con); 1721 i = SSL_do_handshake(con); 1722 printf("SSL_do_handshake -> %d\n", i); 1723 i = 0; /* 13; */ 1724 continue; 1725 /* 1726 * RE-NEGOTIATE asking for client 1727 * cert\n"); 1728 */ 1729 } 1730 if (buf[0] == 'P') { 1731 static const char *str = 1732 "Lets print some clear text\n"; 1733 BIO_write(SSL_get_wbio(con), str, 1734 strlen(str)); 1735 } 1736 if (buf[0] == 'S') { 1737 print_stats(bio_s_out, 1738 SSL_get_SSL_CTX(con)); 1739 } 1740 } 1741 l = k = 0; 1742 for (;;) { 1743 /* should do a select for the write */ 1744 #ifdef RENEG 1745 { 1746 static count = 0; 1747 if (++count == 100) { 1748 count = 0; 1749 SSL_renegotiate(con); 1750 } 1751 } 1752 #endif 1753 k = SSL_write(con, &(buf[l]), (unsigned int) i); 1754 switch (SSL_get_error(con, k)) { 1755 case SSL_ERROR_NONE: 1756 break; 1757 case SSL_ERROR_WANT_WRITE: 1758 case SSL_ERROR_WANT_READ: 1759 case SSL_ERROR_WANT_X509_LOOKUP: 1760 BIO_printf(bio_s_out, "Write BLOCK\n"); 1761 break; 1762 case SSL_ERROR_SYSCALL: 1763 case SSL_ERROR_SSL: 1764 BIO_printf(bio_s_out, "ERROR\n"); 1765 ERR_print_errors(bio_err); 1766 ret = 1; 1767 goto err; 1768 /* break; */ 1769 case SSL_ERROR_ZERO_RETURN: 1770 BIO_printf(bio_s_out, "DONE\n"); 1771 ret = 1; 1772 goto err; 1773 } 1774 if (k <= 0) 1775 continue; 1776 l += k; 1777 i -= k; 1778 if (i <= 0) 1779 break; 1780 } 1781 } 1782 if (read_from_sslcon) { 1783 if (!SSL_is_init_finished(con)) { 1784 i = init_ssl_connection(con); 1785 1786 if (i < 0) { 1787 ret = 0; 1788 goto err; 1789 } else if (i == 0) { 1790 ret = 1; 1791 goto err; 1792 } 1793 } else { 1794 again: 1795 i = SSL_read(con, (char *) buf, bufsize); 1796 switch (SSL_get_error(con, i)) { 1797 case SSL_ERROR_NONE: { 1798 int len, n; 1799 for (len = 0; len < i;) { 1800 do { 1801 n = write(fileno(stdout), buf + len, i - len); 1802 } while (n == -1 && errno == EINTR); 1803 1804 if (n == -1) { 1805 BIO_printf(bio_s_out, "ERROR\n"); 1806 goto err; 1807 } 1808 len += n; 1809 } 1810 } 1811 if (SSL_pending(con)) 1812 goto again; 1813 break; 1814 case SSL_ERROR_WANT_WRITE: 1815 case SSL_ERROR_WANT_READ: 1816 BIO_printf(bio_s_out, "Read BLOCK\n"); 1817 break; 1818 case SSL_ERROR_SYSCALL: 1819 case SSL_ERROR_SSL: 1820 BIO_printf(bio_s_out, "ERROR\n"); 1821 ERR_print_errors(bio_err); 1822 ret = 1; 1823 goto err; 1824 case SSL_ERROR_ZERO_RETURN: 1825 BIO_printf(bio_s_out, "DONE\n"); 1826 ret = 1; 1827 goto err; 1828 } 1829 } 1830 } 1831 } 1832 err: 1833 if (con != NULL) { 1834 BIO_printf(bio_s_out, "shutting down SSL\n"); 1835 SSL_set_shutdown(con, 1836 SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); 1837 SSL_free(con); 1838 } 1839 BIO_printf(bio_s_out, "CONNECTION CLOSED\n"); 1840 freezero(buf, bufsize); 1841 if (ret >= 0) 1842 BIO_printf(bio_s_out, "ACCEPT\n"); 1843 return (ret); 1844 } 1845 1846 static void 1847 close_accept_socket(void) 1848 { 1849 BIO_printf(bio_err, "shutdown accept socket\n"); 1850 if (accept_socket >= 0) { 1851 shutdown(accept_socket, SHUT_RDWR); 1852 close(accept_socket); 1853 } 1854 } 1855 1856 static int 1857 init_ssl_connection(SSL *con) 1858 { 1859 int i; 1860 const char *str; 1861 X509 *peer; 1862 long verify_error; 1863 char buf[BUFSIZ]; 1864 unsigned char *exportedkeymat; 1865 1866 i = SSL_accept(con); 1867 if (i <= 0) { 1868 if (BIO_sock_should_retry(i)) { 1869 BIO_printf(bio_s_out, "DELAY\n"); 1870 return (1); 1871 } 1872 BIO_printf(bio_err, "ERROR\n"); 1873 verify_error = SSL_get_verify_result(con); 1874 if (verify_error != X509_V_OK) { 1875 BIO_printf(bio_err, "verify error:%s\n", 1876 X509_verify_cert_error_string(verify_error)); 1877 } else 1878 ERR_print_errors(bio_err); 1879 return (0); 1880 } 1881 PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con)); 1882 1883 peer = SSL_get_peer_certificate(con); 1884 if (peer != NULL) { 1885 BIO_printf(bio_s_out, "Client certificate\n"); 1886 PEM_write_bio_X509(bio_s_out, peer); 1887 X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof buf); 1888 BIO_printf(bio_s_out, "subject=%s\n", buf); 1889 X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof buf); 1890 BIO_printf(bio_s_out, "issuer=%s\n", buf); 1891 X509_free(peer); 1892 } 1893 if (SSL_get_shared_ciphers(con, buf, sizeof buf) != NULL) 1894 BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf); 1895 str = SSL_CIPHER_get_name(SSL_get_current_cipher(con)); 1896 BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)"); 1897 1898 #ifndef OPENSSL_NO_SRTP 1899 { 1900 SRTP_PROTECTION_PROFILE *srtp_profile 1901 = SSL_get_selected_srtp_profile(con); 1902 1903 if (srtp_profile) 1904 BIO_printf(bio_s_out, 1905 "SRTP Extension negotiated, profile=%s\n", 1906 srtp_profile->name); 1907 } 1908 #endif 1909 if (SSL_cache_hit(con)) 1910 BIO_printf(bio_s_out, "Reused session-id\n"); 1911 BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n", 1912 SSL_get_secure_renegotiation_support(con) ? "" : " NOT"); 1913 if (cfg.keymatexportlabel != NULL) { 1914 BIO_printf(bio_s_out, "Keying material exporter:\n"); 1915 BIO_printf(bio_s_out, " Label: '%s'\n", 1916 cfg.keymatexportlabel); 1917 BIO_printf(bio_s_out, " Length: %i bytes\n", 1918 cfg.keymatexportlen); 1919 exportedkeymat = malloc(cfg.keymatexportlen); 1920 if (exportedkeymat != NULL) { 1921 if (!SSL_export_keying_material(con, exportedkeymat, 1922 cfg.keymatexportlen, 1923 cfg.keymatexportlabel, 1924 strlen(cfg.keymatexportlabel), 1925 NULL, 0, 0)) { 1926 BIO_printf(bio_s_out, " Error\n"); 1927 } else { 1928 BIO_printf(bio_s_out, " Keying material: "); 1929 for (i = 0; i < cfg.keymatexportlen; i++) 1930 BIO_printf(bio_s_out, "%02X", 1931 exportedkeymat[i]); 1932 BIO_printf(bio_s_out, "\n"); 1933 } 1934 free(exportedkeymat); 1935 } 1936 } 1937 return (1); 1938 } 1939 1940 #ifndef OPENSSL_NO_DH 1941 static DH * 1942 load_dh_param(const char *dhfile) 1943 { 1944 DH *ret = NULL; 1945 BIO *bio; 1946 1947 if ((bio = BIO_new_file(dhfile, "r")) == NULL) 1948 goto err; 1949 ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); 1950 err: 1951 BIO_free(bio); 1952 return (ret); 1953 } 1954 #endif 1955 1956 static int 1957 www_body(int s, unsigned char *context) 1958 { 1959 char *buf = NULL; 1960 int ret = 1; 1961 int i, j, k, dot; 1962 SSL *con; 1963 const SSL_CIPHER *c; 1964 BIO *io, *ssl_bio, *sbio; 1965 1966 buf = malloc(bufsize); 1967 if (buf == NULL) 1968 return (0); 1969 io = BIO_new(BIO_f_buffer()); 1970 ssl_bio = BIO_new(BIO_f_ssl()); 1971 if ((io == NULL) || (ssl_bio == NULL)) 1972 goto err; 1973 1974 if (cfg.nbio) { 1975 if (!cfg.quiet) 1976 BIO_printf(bio_err, "turning on non blocking io\n"); 1977 if (!BIO_socket_nbio(s, 1)) 1978 ERR_print_errors(bio_err); 1979 } 1980 1981 /* lets make the output buffer a reasonable size */ 1982 if (!BIO_set_write_buffer_size(io, bufsize)) 1983 goto err; 1984 1985 if ((con = SSL_new(ctx)) == NULL) 1986 goto err; 1987 if (cfg.tlsextdebug) { 1988 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1989 SSL_set_tlsext_debug_arg(con, bio_s_out); 1990 } 1991 if (context) 1992 SSL_set_session_id_context(con, context, 1993 strlen((char *) context)); 1994 1995 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1996 if (cfg.nbio_test) { 1997 BIO *test; 1998 1999 test = BIO_new(BIO_f_nbio_test()); 2000 sbio = BIO_push(test, sbio); 2001 } 2002 SSL_set_bio(con, sbio, sbio); 2003 SSL_set_accept_state(con); 2004 2005 /* SSL_set_fd(con,s); */ 2006 BIO_set_ssl(ssl_bio, con, BIO_CLOSE); 2007 BIO_push(io, ssl_bio); 2008 2009 if (cfg.debug) { 2010 SSL_set_debug(con, 1); 2011 BIO_set_callback(SSL_get_rbio(con), bio_dump_callback); 2012 BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out); 2013 } 2014 if (cfg.msg) { 2015 SSL_set_msg_callback(con, msg_cb); 2016 SSL_set_msg_callback_arg(con, bio_s_out); 2017 } 2018 for (;;) { 2019 i = BIO_gets(io, buf, bufsize - 1); 2020 if (i < 0) { /* error */ 2021 if (!BIO_should_retry(io)) { 2022 if (!cfg.quiet) 2023 ERR_print_errors(bio_err); 2024 goto err; 2025 } else { 2026 if (cfg.debug) { 2027 BIO_printf(bio_s_out, "read R BLOCK\n"); 2028 sleep(1); 2029 } 2030 continue; 2031 } 2032 } else if (i == 0) { /* end of input */ 2033 ret = 1; 2034 goto end; 2035 } 2036 /* else we have data */ 2037 if (((cfg.www == 1) && 2038 (strncmp("GET ", buf, 4) == 0)) || 2039 ((cfg.www == 2) && 2040 (strncmp("GET /stats ", buf, 11) == 0))) { 2041 char *p; 2042 X509 *peer; 2043 STACK_OF(SSL_CIPHER) *sk; 2044 static const char *space = " "; 2045 2046 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); 2047 BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n"); 2048 BIO_puts(io, "<pre>\n"); 2049 /* BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/ 2050 BIO_puts(io, "\n"); 2051 for (i = 0; i < local_argc; i++) { 2052 BIO_puts(io, local_argv[i]); 2053 BIO_write(io, " ", 1); 2054 } 2055 BIO_puts(io, "\n"); 2056 2057 BIO_printf(io, 2058 "Secure Renegotiation IS%s supported\n", 2059 SSL_get_secure_renegotiation_support(con) ? 2060 "" : " NOT"); 2061 2062 /* 2063 * The following is evil and should not really be 2064 * done 2065 */ 2066 BIO_printf(io, 2067 "Ciphers supported in s_server binary\n"); 2068 sk = SSL_get_ciphers(con); 2069 j = sk_SSL_CIPHER_num(sk); 2070 for (i = 0; i < j; i++) { 2071 c = sk_SSL_CIPHER_value(sk, i); 2072 BIO_printf(io, "%-11s:%-25s", 2073 SSL_CIPHER_get_version(c), 2074 SSL_CIPHER_get_name(c)); 2075 if ((((i + 1) % 2) == 0) && (i + 1 != j)) 2076 BIO_puts(io, "\n"); 2077 } 2078 BIO_puts(io, "\n"); 2079 p = SSL_get_shared_ciphers(con, buf, bufsize); 2080 if (p != NULL) { 2081 BIO_printf(io, 2082 "---\nCiphers common between both SSL end points:\n"); 2083 j = i = 0; 2084 while (*p) { 2085 if (*p == ':') { 2086 BIO_write(io, space, 26 - j); 2087 i++; 2088 j = 0; 2089 BIO_write(io, 2090 ((i % 3) ? " " : "\n"), 1); 2091 } else { 2092 BIO_write(io, p, 1); 2093 j++; 2094 } 2095 p++; 2096 } 2097 BIO_puts(io, "\n"); 2098 } 2099 BIO_printf(io, (SSL_cache_hit(con) 2100 ? "---\nReused, " 2101 : "---\nNew, ")); 2102 c = SSL_get_current_cipher(con); 2103 BIO_printf(io, "%s, Cipher is %s\n", 2104 SSL_CIPHER_get_version(c), 2105 SSL_CIPHER_get_name(c)); 2106 SSL_SESSION_print(io, SSL_get_session(con)); 2107 BIO_printf(io, "---\n"); 2108 print_stats(io, SSL_get_SSL_CTX(con)); 2109 BIO_printf(io, "---\n"); 2110 peer = SSL_get_peer_certificate(con); 2111 if (peer != NULL) { 2112 BIO_printf(io, "Client certificate\n"); 2113 X509_print(io, peer); 2114 PEM_write_bio_X509(io, peer); 2115 } else 2116 BIO_puts(io, 2117 "no client certificate available\n"); 2118 BIO_puts(io, "</BODY></HTML>\r\n\r\n"); 2119 break; 2120 } else if ((cfg.www == 2 || 2121 cfg.www == 3) && 2122 (strncmp("GET /", buf, 5) == 0)) { 2123 BIO *file; 2124 char *p, *e; 2125 static const char *text = "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n"; 2126 2127 /* skip the '/' */ 2128 p = &(buf[5]); 2129 2130 dot = 1; 2131 for (e = p; *e != '\0'; e++) { 2132 if (e[0] == ' ') 2133 break; 2134 2135 switch (dot) { 2136 case 1: 2137 dot = (e[0] == '.') ? 2 : 0; 2138 break; 2139 case 2: 2140 dot = (e[0] == '.') ? 3 : 0; 2141 break; 2142 case 3: 2143 dot = (e[0] == '/' || e[0] == '\\') ? 2144 -1 : 0; 2145 break; 2146 } 2147 if (dot == 0) 2148 dot = (e[0] == '/' || e[0] == '\\') ? 2149 1 : 0; 2150 } 2151 dot = (dot == 3) || (dot == -1); /* filename contains 2152 * ".." component */ 2153 2154 if (*e == '\0') { 2155 BIO_puts(io, text); 2156 BIO_printf(io, 2157 "'%s' is an invalid file name\r\n", p); 2158 break; 2159 } 2160 *e = '\0'; 2161 2162 if (dot) { 2163 BIO_puts(io, text); 2164 BIO_printf(io, 2165 "'%s' contains '..' reference\r\n", p); 2166 break; 2167 } 2168 if (*p == '/') { 2169 BIO_puts(io, text); 2170 BIO_printf(io, 2171 "'%s' is an invalid path\r\n", p); 2172 break; 2173 } 2174 /* if a directory, do the index thang */ 2175 if (app_isdir(p) > 0) { 2176 BIO_puts(io, text); 2177 BIO_printf(io, "'%s' is a directory\r\n", p); 2178 break; 2179 } 2180 if ((file = BIO_new_file(p, "r")) == NULL) { 2181 BIO_puts(io, text); 2182 BIO_printf(io, "Error opening '%s'\r\n", p); 2183 ERR_print_errors(io); 2184 break; 2185 } 2186 if (!cfg.quiet) 2187 BIO_printf(bio_err, "FILE:%s\n", p); 2188 2189 if (cfg.www == 2) { 2190 i = strlen(p); 2191 if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) || 2192 ((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) || 2193 ((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0))) 2194 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); 2195 else 2196 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n"); 2197 } 2198 /* send the file */ 2199 for (;;) { 2200 i = BIO_read(file, buf, bufsize); 2201 if (i <= 0) 2202 break; 2203 2204 #ifdef RENEG 2205 total_bytes += i; 2206 fprintf(stderr, "%d\n", i); 2207 if (total_bytes > 3 * 1024) { 2208 total_bytes = 0; 2209 fprintf(stderr, "RENEGOTIATE\n"); 2210 SSL_renegotiate(con); 2211 } 2212 #endif 2213 2214 for (j = 0; j < i;) { 2215 #ifdef RENEG 2216 { 2217 static count = 0; 2218 if (++count == 13) { 2219 SSL_renegotiate(con); 2220 } 2221 } 2222 #endif 2223 k = BIO_write(io, &(buf[j]), i - j); 2224 if (k <= 0) { 2225 if (!BIO_should_retry(io)) 2226 goto write_error; 2227 else { 2228 BIO_printf(bio_s_out, 2229 "rwrite W BLOCK\n"); 2230 } 2231 } else { 2232 j += k; 2233 } 2234 } 2235 } 2236 write_error: 2237 BIO_free(file); 2238 break; 2239 } 2240 } 2241 2242 for (;;) { 2243 i = (int) BIO_flush(io); 2244 if (i <= 0) { 2245 if (!BIO_should_retry(io)) 2246 break; 2247 } else 2248 break; 2249 } 2250 end: 2251 /* make sure we re-use sessions */ 2252 SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); 2253 2254 err: 2255 2256 if (ret >= 0) 2257 BIO_printf(bio_s_out, "ACCEPT\n"); 2258 2259 free(buf); 2260 BIO_free_all(io); 2261 /* if (ssl_bio != NULL) BIO_free(ssl_bio);*/ 2262 return (ret); 2263 } 2264 2265 #define MAX_SESSION_ID_ATTEMPTS 10 2266 static int 2267 generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len) 2268 { 2269 unsigned int count = 0; 2270 do { 2271 arc4random_buf(id, *id_len); 2272 /* 2273 * Prefix the session_id with the required prefix. NB: If our 2274 * prefix is too long, clip it - but there will be worse 2275 * effects anyway, eg. the server could only possibly create 2276 * 1 session ID (ie. the prefix!) so all future session 2277 * negotiations will fail due to conflicts. 2278 */ 2279 memcpy(id, cfg.session_id_prefix, 2280 (strlen(cfg.session_id_prefix) < *id_len) ? 2281 strlen(cfg.session_id_prefix) : *id_len); 2282 } 2283 while (SSL_has_matching_session_id(ssl, id, *id_len) && 2284 (++count < MAX_SESSION_ID_ATTEMPTS)); 2285 if (count >= MAX_SESSION_ID_ATTEMPTS) 2286 return 0; 2287 return 1; 2288 } 2289 2290 static int 2291 ssl_servername_cb(SSL *s, int *ad, void *arg) 2292 { 2293 tlsextctx *p = (tlsextctx *) arg; 2294 const char *servername = SSL_get_servername(s, 2295 TLSEXT_NAMETYPE_host_name); 2296 2297 if (servername && p->biodebug) 2298 BIO_printf(p->biodebug, "Hostname in TLS extension: \"%s\"\n", 2299 servername); 2300 2301 if (!p->servername) 2302 return SSL_TLSEXT_ERR_NOACK; 2303 2304 if (servername) { 2305 if (strcmp(servername, p->servername)) 2306 return p->extension_error; 2307 if (ctx2) { 2308 BIO_printf(p->biodebug, "Switching server context.\n"); 2309 SSL_set_SSL_CTX(s, ctx2); 2310 } 2311 } 2312 return SSL_TLSEXT_ERR_OK; 2313 } 2314 2315 /* Certificate Status callback. This is called when a client includes a 2316 * certificate status request extension. 2317 * 2318 * This is a simplified version. It examines certificates each time and 2319 * makes one OCSP responder query for each request. 2320 * 2321 * A full version would store details such as the OCSP certificate IDs and 2322 * minimise the number of OCSP responses by caching them until they were 2323 * considered "expired". 2324 */ 2325 2326 static int 2327 cert_status_cb(SSL *s, void *arg) 2328 { 2329 tlsextstatusctx *srctx = arg; 2330 BIO *err = srctx->err; 2331 char *host = NULL, *port = NULL, *path = NULL; 2332 int use_ssl; 2333 unsigned char *rspder = NULL; 2334 int rspderlen; 2335 STACK_OF(OPENSSL_STRING) *aia = NULL; 2336 X509 *x = NULL; 2337 X509_STORE_CTX *inctx = NULL; 2338 X509_OBJECT *obj = NULL; 2339 OCSP_REQUEST *req = NULL; 2340 OCSP_RESPONSE *resp = NULL; 2341 OCSP_CERTID *id = NULL; 2342 STACK_OF(X509_EXTENSION) *exts; 2343 int ret = SSL_TLSEXT_ERR_NOACK; 2344 int i; 2345 2346 if (srctx->verbose) 2347 BIO_puts(err, "cert_status: callback called\n"); 2348 /* Build up OCSP query from server certificate */ 2349 x = SSL_get_certificate(s); 2350 aia = X509_get1_ocsp(x); 2351 if (aia) { 2352 if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0), 2353 &host, &port, &path, &use_ssl)) { 2354 BIO_puts(err, "cert_status: can't parse AIA URL\n"); 2355 goto err; 2356 } 2357 if (srctx->verbose) 2358 BIO_printf(err, "cert_status: AIA URL: %s\n", 2359 sk_OPENSSL_STRING_value(aia, 0)); 2360 } else { 2361 if (!srctx->host) { 2362 BIO_puts(srctx->err, 2363 "cert_status: no AIA and no default responder URL\n"); 2364 goto done; 2365 } 2366 host = srctx->host; 2367 path = srctx->path; 2368 port = srctx->port; 2369 use_ssl = srctx->use_ssl; 2370 } 2371 2372 if ((inctx = X509_STORE_CTX_new()) == NULL) 2373 goto err; 2374 2375 if (!X509_STORE_CTX_init(inctx, 2376 SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)), 2377 NULL, NULL)) 2378 goto err; 2379 if ((obj = X509_OBJECT_new()) == NULL) 2380 goto done; 2381 if (X509_STORE_get_by_subject(inctx, X509_LU_X509, 2382 X509_get_issuer_name(x), obj) <= 0) { 2383 BIO_puts(err, 2384 "cert_status: Can't retrieve issuer certificate.\n"); 2385 X509_STORE_CTX_cleanup(inctx); 2386 goto done; 2387 } 2388 req = OCSP_REQUEST_new(); 2389 if (!req) 2390 goto err; 2391 id = OCSP_cert_to_id(NULL, x, X509_OBJECT_get0_X509(obj)); 2392 X509_OBJECT_free(obj); 2393 obj = NULL; 2394 X509_STORE_CTX_free(inctx); 2395 inctx = NULL; 2396 if (!id) 2397 goto err; 2398 if (!OCSP_request_add0_id(req, id)) 2399 goto err; 2400 id = NULL; 2401 /* Add any extensions to the request */ 2402 SSL_get_tlsext_status_exts(s, &exts); 2403 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) { 2404 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); 2405 if (!OCSP_REQUEST_add_ext(req, ext, -1)) 2406 goto err; 2407 } 2408 resp = process_responder(err, req, host, path, port, use_ssl, NULL, 2409 srctx->timeout); 2410 if (!resp) { 2411 BIO_puts(err, "cert_status: error querying responder\n"); 2412 goto done; 2413 } 2414 rspderlen = i2d_OCSP_RESPONSE(resp, &rspder); 2415 if (rspderlen <= 0) 2416 goto err; 2417 SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen); 2418 if (srctx->verbose) { 2419 BIO_puts(err, "cert_status: ocsp response sent:\n"); 2420 OCSP_RESPONSE_print(err, resp, 2); 2421 } 2422 ret = SSL_TLSEXT_ERR_OK; 2423 done: 2424 X509_STORE_CTX_free(inctx); 2425 X509_OBJECT_free(obj); 2426 if (ret != SSL_TLSEXT_ERR_OK) 2427 ERR_print_errors(err); 2428 if (aia) { 2429 free(host); 2430 free(path); 2431 free(port); 2432 X509_email_free(aia); 2433 } 2434 if (id) 2435 OCSP_CERTID_free(id); 2436 if (req) 2437 OCSP_REQUEST_free(req); 2438 if (resp) 2439 OCSP_RESPONSE_free(resp); 2440 return ret; 2441 err: 2442 ret = SSL_TLSEXT_ERR_ALERT_FATAL; 2443 goto done; 2444 } 2445 2446 static int 2447 alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, 2448 const unsigned char *in, unsigned int inlen, void *arg) 2449 { 2450 tlsextalpnctx *alpn_ctx = arg; 2451 2452 if (!cfg.quiet) { 2453 /* We can assume that in is syntactically valid. */ 2454 unsigned i; 2455 2456 BIO_printf(bio_s_out, 2457 "ALPN protocols advertised by the client: "); 2458 for (i = 0; i < inlen; ) { 2459 if (i) 2460 BIO_write(bio_s_out, ", ", 2); 2461 BIO_write(bio_s_out, &in[i + 1], in[i]); 2462 i += in[i] + 1; 2463 } 2464 BIO_write(bio_s_out, "\n", 1); 2465 } 2466 2467 if (SSL_select_next_proto((unsigned char**)out, outlen, alpn_ctx->data, 2468 alpn_ctx->len, in, inlen) != OPENSSL_NPN_NEGOTIATED) 2469 return (SSL_TLSEXT_ERR_NOACK); 2470 2471 if (!cfg.quiet) { 2472 BIO_printf(bio_s_out, "ALPN protocols selected: "); 2473 BIO_write(bio_s_out, *out, *outlen); 2474 BIO_write(bio_s_out, "\n", 1); 2475 } 2476 2477 return (SSL_TLSEXT_ERR_OK); 2478 } 2479