1 /* $OpenBSD: s_server.c,v 1.44 2020/10/02 15:43:48 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(char *hostname, 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(char *hostname, 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_DTLS1 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 char *named_curve; 271 int nbio; 272 int nbio_test; 273 int no_cache; 274 int nocert; 275 int no_dhe; 276 int no_ecdhe; 277 int no_tmp_rsa; /* No-op. */ 278 int off; 279 char *passarg; 280 short port; 281 int quiet; 282 int server_verify; 283 char *session_id_prefix; 284 long socket_mtu; 285 int socket_type; 286 #ifndef OPENSSL_NO_SRTP 287 char *srtp_profiles; 288 #endif 289 int state; 290 tlsextstatusctx tlscstatp; 291 tlsextctx tlsextcbp; 292 int tlsextdebug; 293 int tlsextstatus; 294 X509_VERIFY_PARAM *vpm; 295 int www; 296 } s_server_config; 297 298 static int 299 s_server_opt_context(char *arg) 300 { 301 s_server_config.context = (unsigned char *) arg; 302 return (0); 303 } 304 305 static int 306 s_server_opt_keymatexportlen(char *arg) 307 { 308 s_server_config.keymatexportlen = strtonum(arg, 1, INT_MAX, 309 &s_server_config.errstr); 310 if (s_server_config.errstr != NULL) { 311 BIO_printf(bio_err, "invalid argument %s: %s\n", 312 arg, s_server_config.errstr); 313 return (1); 314 } 315 return (0); 316 } 317 318 #ifndef OPENSSL_NO_DTLS1 319 static int 320 s_server_opt_mtu(char *arg) 321 { 322 s_server_config.socket_mtu = strtonum(arg, 0, LONG_MAX, 323 &s_server_config.errstr); 324 if (s_server_config.errstr != NULL) { 325 BIO_printf(bio_err, "invalid argument %s: %s\n", 326 arg, s_server_config.errstr); 327 return (1); 328 } 329 return (0); 330 } 331 332 static int 333 s_server_protocol_version_dtls1(void) 334 { 335 s_server_config.meth = DTLS_server_method(); 336 s_server_config.socket_type = SOCK_DGRAM; 337 return (0); 338 } 339 #endif 340 341 static int 342 s_server_protocol_version_tls1(void) 343 { 344 s_server_config.min_version = TLS1_VERSION; 345 s_server_config.max_version = TLS1_VERSION; 346 return (0); 347 } 348 349 static int 350 s_server_protocol_version_tls1_1(void) 351 { 352 s_server_config.min_version = TLS1_1_VERSION; 353 s_server_config.max_version = TLS1_1_VERSION; 354 return (0); 355 } 356 357 static int 358 s_server_protocol_version_tls1_2(void) 359 { 360 s_server_config.min_version = TLS1_2_VERSION; 361 s_server_config.max_version = TLS1_2_VERSION; 362 return (0); 363 } 364 365 static int 366 s_server_protocol_version_tls1_3(void) 367 { 368 s_server_config.min_version = TLS1_3_VERSION; 369 s_server_config.max_version = TLS1_3_VERSION; 370 return (0); 371 } 372 373 static int 374 s_server_opt_nbio_test(void) 375 { 376 s_server_config.nbio = 1; 377 s_server_config.nbio_test = 1; 378 return (0); 379 } 380 381 static int 382 s_server_opt_port(char *arg) 383 { 384 if (!extract_port(arg, &s_server_config.port)) 385 return (1); 386 return (0); 387 } 388 389 static int 390 s_server_opt_status_timeout(char *arg) 391 { 392 s_server_config.tlsextstatus = 1; 393 s_server_config.tlscstatp.timeout = strtonum(arg, 0, INT_MAX, 394 &s_server_config.errstr); 395 if (s_server_config.errstr != NULL) { 396 BIO_printf(bio_err, "invalid argument %s: %s\n", 397 arg, s_server_config.errstr); 398 return (1); 399 } 400 return (0); 401 } 402 403 static int 404 s_server_opt_status_url(char *arg) 405 { 406 s_server_config.tlsextstatus = 1; 407 if (!OCSP_parse_url(arg, &s_server_config.tlscstatp.host, 408 &s_server_config.tlscstatp.port, &s_server_config.tlscstatp.path, 409 &s_server_config.tlscstatp.use_ssl)) { 410 BIO_printf(bio_err, "Error parsing URL\n"); 411 return (1); 412 } 413 return (0); 414 } 415 416 static int 417 s_server_opt_status_verbose(void) 418 { 419 s_server_config.tlsextstatus = 1; 420 s_server_config.tlscstatp.verbose = 1; 421 return (0); 422 } 423 424 static int 425 s_server_opt_verify(char *arg) 426 { 427 s_server_config.server_verify = SSL_VERIFY_PEER | 428 SSL_VERIFY_CLIENT_ONCE; 429 verify_depth = strtonum(arg, 0, INT_MAX, &s_server_config.errstr); 430 if (s_server_config.errstr != NULL) { 431 BIO_printf(bio_err, "invalid argument %s: %s\n", 432 arg, s_server_config.errstr); 433 return (1); 434 } 435 BIO_printf(bio_err, "verify depth is %d\n", verify_depth); 436 return (0); 437 } 438 439 static int 440 s_server_opt_verify_fail(char *arg) 441 { 442 s_server_config.server_verify = SSL_VERIFY_PEER | 443 SSL_VERIFY_FAIL_IF_NO_PEER_CERT | SSL_VERIFY_CLIENT_ONCE; 444 verify_depth = strtonum(arg, 0, INT_MAX, &s_server_config.errstr); 445 if (s_server_config.errstr != NULL) { 446 BIO_printf(bio_err, "invalid argument %s: %s\n", 447 arg, s_server_config.errstr); 448 return (1); 449 } 450 BIO_printf(bio_err, "verify depth is %d, must return a certificate\n", 451 verify_depth); 452 return (0); 453 } 454 455 static int 456 s_server_opt_verify_param(int argc, char **argv, int *argsused) 457 { 458 char **pargs = argv; 459 int pargc = argc; 460 int badarg = 0; 461 462 if (!args_verify(&pargs, &pargc, &badarg, bio_err, 463 &s_server_config.vpm)) { 464 BIO_printf(bio_err, "unknown option %s\n", *argv); 465 return (1); 466 } 467 if (badarg) 468 return (1); 469 470 *argsused = argc - pargc; 471 return (0); 472 } 473 474 static const struct option s_server_options[] = { 475 { 476 .name = "4", 477 .type = OPTION_DISCARD, 478 }, 479 { 480 .name = "6", 481 .type = OPTION_DISCARD, 482 }, 483 { 484 .name = "accept", 485 .argname = "port", 486 .desc = "Port to accept on (default is 4433)", 487 .type = OPTION_ARG_FUNC, 488 .opt.argfunc = s_server_opt_port, 489 }, 490 { 491 .name = "alpn", 492 .argname = "protocols", 493 .desc = "Set the advertised protocols for the ALPN extension" 494 " (comma-separated list)", 495 .type = OPTION_ARG, 496 .opt.arg = &s_server_config.alpn_in, 497 }, 498 { 499 .name = "bugs", 500 .desc = "Turn on SSL bug compatibility", 501 .type = OPTION_FLAG, 502 .opt.flag = &s_server_config.bugs, 503 }, 504 { 505 .name = "CAfile", 506 .argname = "file", 507 .desc = "PEM format file of CA certificates", 508 .type = OPTION_ARG, 509 .opt.arg = &s_server_config.CAfile, 510 }, 511 { 512 .name = "CApath", 513 .argname = "directory", 514 .desc = "PEM format directory of CA certificates", 515 .type = OPTION_ARG, 516 .opt.arg = &s_server_config.CApath, 517 }, 518 { 519 .name = "cert", 520 .argname = "file", 521 .desc = "Certificate file to use\n" 522 "(default is " TEST_CERT ")", 523 .type = OPTION_ARG, 524 .opt.arg = &s_server_config.cert_file, 525 }, 526 { 527 .name = "cert2", 528 .argname = "file", 529 .desc = "Certificate file to use for servername\n" 530 "(default is " TEST_CERT2 ")", 531 .type = OPTION_ARG, 532 .opt.arg = &s_server_config.cert_file2, 533 }, 534 { 535 .name = "certform", 536 .argname = "fmt", 537 .desc = "Certificate format (PEM or DER) PEM default", 538 .type = OPTION_ARG_FORMAT, 539 .opt.value = &s_server_config.cert_format, 540 }, 541 #ifndef OPENSSL_NO_DTLS1 542 { 543 .name = "chain", 544 .type = OPTION_FLAG, 545 .opt.flag = &s_server_config.cert_chain, 546 }, 547 #endif 548 { 549 .name = "cipher", 550 .argname = "list", 551 .desc = "List of ciphers to enable (see `openssl ciphers`)", 552 .type = OPTION_ARG, 553 .opt.arg = &s_server_config.cipher, 554 }, 555 { 556 .name = "context", 557 .argname = "id", 558 .desc = "Set session ID context", 559 .type = OPTION_ARG_FUNC, 560 .opt.argfunc = s_server_opt_context, 561 }, 562 { 563 .name = "crlf", 564 .desc = "Convert LF from terminal into CRLF", 565 .type = OPTION_FLAG, 566 .opt.flag = &s_server_config.crlf, 567 }, 568 { 569 .name = "dcert", 570 .argname = "file", 571 .desc = "Second certificate file to use (usually for DSA)", 572 .type = OPTION_ARG, 573 .opt.arg = &s_server_config.dcert_file, 574 }, 575 { 576 .name = "dcertform", 577 .argname = "fmt", 578 .desc = "Second certificate format (PEM or DER) PEM default", 579 .type = OPTION_ARG_FORMAT, 580 .opt.value = &s_server_config.dcert_format, 581 }, 582 { 583 .name = "debug", 584 .desc = "Print more output", 585 .type = OPTION_FLAG, 586 .opt.flag = &s_server_config.debug, 587 }, 588 { 589 .name = "dhparam", 590 .argname = "file", 591 .desc = "DH parameter file to use, in cert file if not specified", 592 .type = OPTION_ARG, 593 .opt.arg = &s_server_config.dhfile, 594 }, 595 { 596 .name = "dkey", 597 .argname = "file", 598 .desc = "Second private key file to use (usually for DSA)", 599 .type = OPTION_ARG, 600 .opt.arg = &s_server_config.dkey_file, 601 }, 602 { 603 .name = "dkeyform", 604 .argname = "fmt", 605 .desc = "Second key format (PEM or DER) PEM default", 606 .type = OPTION_ARG_FORMAT, 607 .opt.value = &s_server_config.dkey_format, 608 }, 609 { 610 .name = "dpass", 611 .argname = "arg", 612 .desc = "Second private key file pass phrase source", 613 .type = OPTION_ARG, 614 .opt.arg = &s_server_config.dpassarg, 615 }, 616 #ifndef OPENSSL_NO_DTLS1 617 { 618 .name = "dtls1", 619 .desc = "Just talk DTLSv1", 620 .type = OPTION_FUNC, 621 .opt.func = s_server_protocol_version_dtls1, 622 }, 623 #endif 624 { 625 .name = "groups", 626 .argname = "list", 627 .desc = "Specify EC groups (colon-separated list)", 628 .type = OPTION_ARG, 629 .opt.arg = &s_server_config.groups_in, 630 }, 631 { 632 .name = "HTTP", 633 .desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>", 634 .type = OPTION_VALUE, 635 .opt.value = &s_server_config.www, 636 .value = 3, 637 }, 638 { 639 .name = "id_prefix", 640 .argname = "arg", 641 .desc = "Generate SSL/TLS session IDs prefixed by 'arg'", 642 .type = OPTION_ARG, 643 .opt.arg = &s_server_config.session_id_prefix, 644 }, 645 { 646 .name = "key", 647 .argname = "file", 648 .desc = "Private Key file to use, in cert file if\n" 649 "not specified (default is " TEST_CERT ")", 650 .type = OPTION_ARG, 651 .opt.arg = &s_server_config.key_file, 652 }, 653 { 654 .name = "key2", 655 .argname = "file", 656 .desc = "Private Key file to use for servername, in cert file if\n" 657 "not specified (default is " TEST_CERT2 ")", 658 .type = OPTION_ARG, 659 .opt.arg = &s_server_config.key_file2, 660 }, 661 { 662 .name = "keyform", 663 .argname = "fmt", 664 .desc = "Key format (PEM or DER) PEM default", 665 .type = OPTION_ARG_FORMAT, 666 .opt.value = &s_server_config.key_format, 667 }, 668 { 669 .name = "keymatexport", 670 .argname = "label", 671 .desc = "Export keying material using label", 672 .type = OPTION_ARG, 673 .opt.arg = &s_server_config.keymatexportlabel, 674 }, 675 { 676 .name = "keymatexportlen", 677 .argname = "len", 678 .desc = "Export len bytes of keying material (default 20)", 679 .type = OPTION_ARG_FUNC, 680 .opt.argfunc = s_server_opt_keymatexportlen, 681 }, 682 { 683 .name = "legacy_renegotiation", 684 .type = OPTION_DISCARD, 685 }, 686 { 687 .name = "msg", 688 .desc = "Show protocol messages", 689 .type = OPTION_FLAG, 690 .opt.flag = &s_server_config.msg, 691 }, 692 #ifndef OPENSSL_NO_DTLS1 693 { 694 .name = "mtu", 695 .argname = "mtu", 696 .desc = "Set link layer MTU", 697 .type = OPTION_ARG_FUNC, 698 .opt.argfunc = s_server_opt_mtu, 699 }, 700 #endif 701 { 702 .name = "named_curve", 703 .argname = "arg", 704 .type = OPTION_ARG, 705 .opt.arg = &s_server_config.named_curve, 706 }, 707 { 708 .name = "nbio", 709 .desc = "Run with non-blocking I/O", 710 .type = OPTION_FLAG, 711 .opt.flag = &s_server_config.nbio, 712 }, 713 { 714 .name = "nbio_test", 715 .desc = "Test with the non-blocking test bio", 716 .type = OPTION_FUNC, 717 .opt.func = s_server_opt_nbio_test, 718 }, 719 { 720 .name = "nextprotoneg", 721 .argname = "arg", 722 .type = OPTION_ARG, 723 .opt.arg = &s_server_config.npn_in, /* Ignored. */ 724 }, 725 { 726 .name = "no_cache", 727 .desc = "Disable session cache", 728 .type = OPTION_FLAG, 729 .opt.flag = &s_server_config.no_cache, 730 }, 731 { 732 .name = "no_comp", 733 .desc = "Disable SSL/TLS compression", 734 .type = OPTION_VALUE_OR, 735 .opt.value = &s_server_config.off, 736 .value = SSL_OP_NO_COMPRESSION, 737 }, 738 { 739 .name = "no_dhe", 740 .desc = "Disable ephemeral DH", 741 .type = OPTION_FLAG, 742 .opt.flag = &s_server_config.no_dhe, 743 }, 744 { 745 .name = "no_ecdhe", 746 .desc = "Disable ephemeral ECDH", 747 .type = OPTION_FLAG, 748 .opt.flag = &s_server_config.no_ecdhe, 749 }, 750 { 751 .name = "no_ticket", 752 .desc = "Disable use of RFC4507bis session tickets", 753 .type = OPTION_VALUE_OR, 754 .opt.value = &s_server_config.off, 755 .value = SSL_OP_NO_TICKET, 756 }, 757 { 758 .name = "no_ssl2", 759 .type = OPTION_VALUE_OR, 760 .opt.value = &s_server_config.off, 761 .value = SSL_OP_NO_SSLv2, 762 }, 763 { 764 .name = "no_ssl3", 765 .type = OPTION_VALUE_OR, 766 .opt.value = &s_server_config.off, 767 .value = SSL_OP_NO_SSLv3, 768 }, 769 { 770 .name = "no_tls1", 771 .desc = "Just disable TLSv1", 772 .type = OPTION_VALUE_OR, 773 .opt.value = &s_server_config.off, 774 .value = SSL_OP_NO_TLSv1, 775 }, 776 { 777 .name = "no_tls1_1", 778 .desc = "Just disable TLSv1.1", 779 .type = OPTION_VALUE_OR, 780 .opt.value = &s_server_config.off, 781 .value = SSL_OP_NO_TLSv1_1, 782 }, 783 { 784 .name = "no_tls1_2", 785 .desc = "Just disable TLSv1.2", 786 .type = OPTION_VALUE_OR, 787 .opt.value = &s_server_config.off, 788 .value = SSL_OP_NO_TLSv1_2, 789 }, 790 { 791 .name = "no_tls1_3", 792 .desc = "Just disable TLSv1.3", 793 .type = OPTION_VALUE_OR, 794 .opt.value = &s_server_config.off, 795 .value = SSL_OP_NO_TLSv1_3, 796 }, 797 { 798 .name = "no_tmp_rsa", 799 .type = OPTION_DISCARD, 800 }, 801 { 802 .name = "nocert", 803 .desc = "Don't use any certificates (Anon-DH)", 804 .type = OPTION_FLAG, 805 .opt.flag = &s_server_config.nocert, 806 }, 807 { 808 .name = "pass", 809 .argname = "arg", 810 .desc = "Private key file pass phrase source", 811 .type = OPTION_ARG, 812 .opt.arg = &s_server_config.passarg, 813 }, 814 { 815 .name = "port", 816 .argname = "port", 817 .type = OPTION_ARG_FUNC, 818 .opt.argfunc = s_server_opt_port, 819 }, 820 { 821 .name = "quiet", 822 .desc = "Inhibit printing of session and certificate information", 823 .type = OPTION_FLAG, 824 .opt.flag = &s_server_config.quiet, 825 }, 826 { 827 .name = "servername", 828 .argname = "name", 829 .desc = "Servername for HostName TLS extension", 830 .type = OPTION_ARG, 831 .opt.arg = &s_server_config.tlsextcbp.servername, 832 }, 833 { 834 .name = "servername_fatal", 835 .desc = "On mismatch send fatal alert (default warning alert)", 836 .type = OPTION_VALUE, 837 .opt.value = &s_server_config.tlsextcbp.extension_error, 838 .value = SSL_TLSEXT_ERR_ALERT_FATAL, 839 }, 840 { 841 .name = "serverpref", 842 .desc = "Use server's cipher preferences", 843 .type = OPTION_VALUE_OR, 844 .opt.value = &s_server_config.off, 845 .value = SSL_OP_CIPHER_SERVER_PREFERENCE, 846 }, 847 { 848 .name = "state", 849 .desc = "Print the SSL states", 850 .type = OPTION_FLAG, 851 .opt.flag = &s_server_config.state, 852 }, 853 { 854 .name = "status", 855 .desc = "Respond to certificate status requests", 856 .type = OPTION_FLAG, 857 .opt.flag = &s_server_config.tlsextstatus, 858 }, 859 { 860 .name = "status_timeout", 861 .argname = "nsec", 862 .desc = "Status request responder timeout", 863 .type = OPTION_ARG_FUNC, 864 .opt.argfunc = s_server_opt_status_timeout, 865 }, 866 { 867 .name = "status_url", 868 .argname = "url", 869 .desc = "Status request fallback URL", 870 .type = OPTION_ARG_FUNC, 871 .opt.argfunc = s_server_opt_status_url, 872 }, 873 { 874 .name = "status_verbose", 875 .desc = "Enable status request verbose printout", 876 .type = OPTION_FUNC, 877 .opt.func = s_server_opt_status_verbose, 878 }, 879 #ifndef OPENSSL_NO_DTLS1 880 { 881 .name = "timeout", 882 .desc = "Enable timeouts", 883 .type = OPTION_FLAG, 884 .opt.flag = &s_server_config.enable_timeouts, 885 }, 886 #endif 887 { 888 .name = "tls1", 889 .desc = "Just talk TLSv1", 890 .type = OPTION_FUNC, 891 .opt.func = s_server_protocol_version_tls1, 892 }, 893 { 894 .name = "tls1_1", 895 .desc = "Just talk TLSv1.1", 896 .type = OPTION_FUNC, 897 .opt.func = s_server_protocol_version_tls1_1, 898 }, 899 { 900 .name = "tls1_2", 901 .desc = "Just talk TLSv1.2", 902 .type = OPTION_FUNC, 903 .opt.func = s_server_protocol_version_tls1_2, 904 }, 905 { 906 .name = "tls1_3", 907 .desc = "Just talk TLSv1.3", 908 .type = OPTION_FUNC, 909 .opt.func = s_server_protocol_version_tls1_3, 910 }, 911 { 912 .name = "tlsextdebug", 913 .desc = "Hex dump of all TLS extensions received", 914 .type = OPTION_FLAG, 915 .opt.flag = &s_server_config.tlsextdebug, 916 }, 917 #ifndef OPENSSL_NO_SRTP 918 { 919 .name = "use_srtp", 920 .argname = "profiles", 921 .desc = "Offer SRTP key management with a colon-separated profile list", 922 .type = OPTION_ARG, 923 .opt.arg = &s_server_config.srtp_profiles, 924 }, 925 #endif 926 { 927 .name = "Verify", 928 .argname = "depth", 929 .desc = "Turn on peer certificate verification, must have a cert", 930 .type = OPTION_ARG_FUNC, 931 .opt.argfunc = s_server_opt_verify_fail, 932 }, 933 { 934 .name = "verify", 935 .argname = "depth", 936 .desc = "Turn on peer certificate verification", 937 .type = OPTION_ARG_FUNC, 938 .opt.argfunc = s_server_opt_verify, 939 }, 940 { 941 .name = "verify_return_error", 942 .desc = "Return verification error", 943 .type = OPTION_FLAG, 944 .opt.flag = &verify_return_error, 945 }, 946 { 947 .name = "WWW", 948 .desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>", 949 .type = OPTION_VALUE, 950 .opt.value = &s_server_config.www, 951 .value = 2, 952 }, 953 { 954 .name = "www", 955 .desc = "Respond to a 'GET /' with a status page", 956 .type = OPTION_VALUE, 957 .opt.value = &s_server_config.www, 958 .value = 1, 959 }, 960 { 961 .name = NULL, 962 .desc = "", 963 .type = OPTION_ARGV_FUNC, 964 .opt.argvfunc = s_server_opt_verify_param, 965 }, 966 { NULL }, 967 }; 968 969 static void 970 s_server_init(void) 971 { 972 accept_socket = -1; 973 s_server_config.cipher = NULL; 974 s_server_config.server_verify = SSL_VERIFY_NONE; 975 s_server_config.dcert_file = NULL; 976 s_server_config.dkey_file = NULL; 977 s_server_config.cert_file = TEST_CERT; 978 s_server_config.key_file = NULL; 979 s_server_config.cert_file2 = TEST_CERT2; 980 s_server_config.key_file2 = NULL; 981 ctx2 = NULL; 982 s_server_config.nbio = 0; 983 s_server_config.nbio_test = 0; 984 ctx = NULL; 985 s_server_config.www = 0; 986 987 bio_s_out = NULL; 988 s_server_config.debug = 0; 989 s_server_config.msg = 0; 990 s_server_config.quiet = 0; 991 } 992 993 static void 994 sv_usage(void) 995 { 996 fprintf(stderr, "usage: s_server " 997 "[-accept port] [-alpn protocols] [-bugs] [-CAfile file]\n" 998 " [-CApath directory] [-cert file] [-cert2 file]\n" 999 " [-certform der | pem] [-cipher cipherlist]\n" 1000 " [-context id] [-crl_check] [-crl_check_all] [-crlf]\n" 1001 " [-dcert file] [-dcertform der | pem] [-debug]\n" 1002 " [-dhparam file] [-dkey file] [-dkeyform der | pem]\n" 1003 " [-dpass arg] [-dtls1] [-groups list] [-HTTP]\n" 1004 " [-id_prefix arg] [-key keyfile] [-key2 keyfile]\n" 1005 " [-keyform der | pem] [-keymatexport label]\n" 1006 " [-keymatexportlen len] [-msg] [-mtu mtu]\n" 1007 " [-named_curve arg] [-nbio] [-nbio_test] [-no_cache]\n" 1008 " [-no_dhe] [-no_ecdhe] [-no_ticket] [-no_tls1]\n" 1009 " [-no_tls1_1] [-no_tls1_2] [-no_tls1_3] [-no_tmp_rsa]\n" 1010 " [-nocert] [-pass arg] [-quiet] [-servername name]\n" 1011 " [-servername_fatal] [-serverpref] [-state] [-status]\n" 1012 " [-status_timeout nsec] [-status_url url]\n" 1013 " [-status_verbose] [-timeout] [-tls1] [-tls1_1]\n" 1014 " [-tls1_2] [-tls1_3] [-tlsextdebug] [-use_srtp profiles]\n" 1015 " [-Verify depth] [-verify depth] [-verify_return_error]\n" 1016 " [-WWW] [-www]\n"); 1017 fprintf(stderr, "\n"); 1018 options_usage(s_server_options); 1019 fprintf(stderr, "\n"); 1020 } 1021 1022 int 1023 s_server_main(int argc, char *argv[]) 1024 { 1025 int badop = 0; 1026 int ret = 1; 1027 char *pass = NULL; 1028 char *dpass = NULL; 1029 X509 *s_cert = NULL, *s_dcert = NULL; 1030 EVP_PKEY *s_key = NULL, *s_dkey = NULL; 1031 EVP_PKEY *s_key2 = NULL; 1032 X509 *s_cert2 = NULL; 1033 tlsextalpnctx alpn_ctx = { NULL, 0 }; 1034 1035 if (single_execution) { 1036 if (pledge("stdio rpath inet dns tty", NULL) == -1) { 1037 perror("pledge"); 1038 exit(1); 1039 } 1040 } 1041 1042 memset(&s_server_config, 0, sizeof(s_server_config)); 1043 s_server_config.keymatexportlen = 20; 1044 s_server_config.meth = TLS_server_method(); 1045 s_server_config.port = PORT; 1046 s_server_config.cert_file = TEST_CERT; 1047 s_server_config.cert_file2 = TEST_CERT2; 1048 s_server_config.cert_format = FORMAT_PEM; 1049 s_server_config.dcert_format = FORMAT_PEM; 1050 s_server_config.dkey_format = FORMAT_PEM; 1051 s_server_config.key_format = FORMAT_PEM; 1052 s_server_config.server_verify = SSL_VERIFY_NONE; 1053 s_server_config.socket_type = SOCK_STREAM; 1054 s_server_config.tlscstatp.timeout = -1; 1055 s_server_config.tlsextcbp.extension_error = 1056 SSL_TLSEXT_ERR_ALERT_WARNING; 1057 1058 local_argc = argc; 1059 local_argv = argv; 1060 1061 s_server_init(); 1062 1063 verify_depth = 0; 1064 1065 if (options_parse(argc, argv, s_server_options, NULL, NULL) != 0) { 1066 badop = 1; 1067 goto bad; 1068 } 1069 if (badop) { 1070 bad: 1071 if (s_server_config.errstr == NULL) 1072 sv_usage(); 1073 goto end; 1074 } 1075 1076 if (!app_passwd(bio_err, s_server_config.passarg, 1077 s_server_config.dpassarg, &pass, &dpass)) { 1078 BIO_printf(bio_err, "Error getting password\n"); 1079 goto end; 1080 } 1081 if (s_server_config.key_file == NULL) 1082 s_server_config.key_file = s_server_config.cert_file; 1083 if (s_server_config.key_file2 == NULL) 1084 s_server_config.key_file2 = s_server_config.cert_file2; 1085 1086 if (s_server_config.nocert == 0) { 1087 s_key = load_key(bio_err, s_server_config.key_file, 1088 s_server_config.key_format, 0, pass, 1089 "server certificate private key file"); 1090 if (!s_key) { 1091 ERR_print_errors(bio_err); 1092 goto end; 1093 } 1094 s_cert = load_cert(bio_err, s_server_config.cert_file, 1095 s_server_config.cert_format, 1096 NULL, "server certificate file"); 1097 1098 if (!s_cert) { 1099 ERR_print_errors(bio_err); 1100 goto end; 1101 } 1102 if (s_server_config.tlsextcbp.servername) { 1103 s_key2 = load_key(bio_err, s_server_config.key_file2, 1104 s_server_config.key_format, 0, pass, 1105 "second server certificate private key file"); 1106 if (!s_key2) { 1107 ERR_print_errors(bio_err); 1108 goto end; 1109 } 1110 s_cert2 = load_cert(bio_err, s_server_config.cert_file2, 1111 s_server_config.cert_format, 1112 NULL, "second server certificate file"); 1113 1114 if (!s_cert2) { 1115 ERR_print_errors(bio_err); 1116 goto end; 1117 } 1118 } 1119 } 1120 alpn_ctx.data = NULL; 1121 if (s_server_config.alpn_in) { 1122 unsigned short len; 1123 alpn_ctx.data = next_protos_parse(&len, 1124 s_server_config.alpn_in); 1125 if (alpn_ctx.data == NULL) 1126 goto end; 1127 alpn_ctx.len = len; 1128 } 1129 1130 if (s_server_config.dcert_file) { 1131 1132 if (s_server_config.dkey_file == NULL) 1133 s_server_config.dkey_file = s_server_config.dcert_file; 1134 1135 s_dkey = load_key(bio_err, s_server_config.dkey_file, 1136 s_server_config.dkey_format, 1137 0, dpass, "second certificate private key file"); 1138 if (!s_dkey) { 1139 ERR_print_errors(bio_err); 1140 goto end; 1141 } 1142 s_dcert = load_cert(bio_err, s_server_config.dcert_file, 1143 s_server_config.dcert_format, 1144 NULL, "second server certificate file"); 1145 1146 if (!s_dcert) { 1147 ERR_print_errors(bio_err); 1148 goto end; 1149 } 1150 } 1151 if (bio_s_out == NULL) { 1152 if (s_server_config.quiet && !s_server_config.debug && 1153 !s_server_config.msg) { 1154 bio_s_out = BIO_new(BIO_s_null()); 1155 } else { 1156 if (bio_s_out == NULL) 1157 bio_s_out = BIO_new_fp(stdout, BIO_NOCLOSE); 1158 } 1159 } 1160 if (s_server_config.nocert) { 1161 s_server_config.cert_file = NULL; 1162 s_server_config.key_file = NULL; 1163 s_server_config.dcert_file = NULL; 1164 s_server_config.dkey_file = NULL; 1165 s_server_config.cert_file2 = NULL; 1166 s_server_config.key_file2 = NULL; 1167 } 1168 ctx = SSL_CTX_new(s_server_config.meth); 1169 if (ctx == NULL) { 1170 ERR_print_errors(bio_err); 1171 goto end; 1172 } 1173 1174 SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY); 1175 1176 if (!SSL_CTX_set_min_proto_version(ctx, s_server_config.min_version)) 1177 goto end; 1178 if (!SSL_CTX_set_max_proto_version(ctx, s_server_config.max_version)) 1179 goto end; 1180 1181 if (s_server_config.session_id_prefix) { 1182 if (strlen(s_server_config.session_id_prefix) >= 32) 1183 BIO_printf(bio_err, 1184 "warning: id_prefix is too long, only one new session will be possible\n"); 1185 else if (strlen(s_server_config.session_id_prefix) >= 16) 1186 BIO_printf(bio_err, 1187 "warning: id_prefix is too long if you use SSLv2\n"); 1188 if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) { 1189 BIO_printf(bio_err, "error setting 'id_prefix'\n"); 1190 ERR_print_errors(bio_err); 1191 goto end; 1192 } 1193 BIO_printf(bio_err, "id_prefix '%s' set.\n", 1194 s_server_config.session_id_prefix); 1195 } 1196 SSL_CTX_set_quiet_shutdown(ctx, 1); 1197 if (s_server_config.bugs) 1198 SSL_CTX_set_options(ctx, SSL_OP_ALL); 1199 SSL_CTX_set_options(ctx, s_server_config.off); 1200 /* 1201 * DTLS: partial reads end up discarding unread UDP bytes :-( Setting 1202 * read ahead solves this problem. 1203 */ 1204 if (s_server_config.socket_type == SOCK_DGRAM) 1205 SSL_CTX_set_read_ahead(ctx, 1); 1206 1207 if (s_server_config.state) 1208 SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback); 1209 if (s_server_config.no_cache) 1210 SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF); 1211 else 1212 SSL_CTX_sess_set_cache_size(ctx, 128); 1213 1214 #ifndef OPENSSL_NO_SRTP 1215 if (s_server_config.srtp_profiles != NULL) 1216 SSL_CTX_set_tlsext_use_srtp(ctx, s_server_config.srtp_profiles); 1217 #endif 1218 1219 if ((!SSL_CTX_load_verify_locations(ctx, s_server_config.CAfile, 1220 s_server_config.CApath)) || 1221 (!SSL_CTX_set_default_verify_paths(ctx))) { 1222 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */ 1223 ERR_print_errors(bio_err); 1224 /* goto end; */ 1225 } 1226 if (s_server_config.vpm) 1227 SSL_CTX_set1_param(ctx, s_server_config.vpm); 1228 1229 if (s_cert2) { 1230 ctx2 = SSL_CTX_new(s_server_config.meth); 1231 if (ctx2 == NULL) { 1232 ERR_print_errors(bio_err); 1233 goto end; 1234 } 1235 1236 if (!SSL_CTX_set_min_proto_version(ctx2, 1237 s_server_config.min_version)) 1238 goto end; 1239 if (!SSL_CTX_set_max_proto_version(ctx2, 1240 s_server_config.max_version)) 1241 goto end; 1242 SSL_CTX_clear_mode(ctx2, SSL_MODE_AUTO_RETRY); 1243 } 1244 if (ctx2) { 1245 BIO_printf(bio_s_out, "Setting secondary ctx parameters\n"); 1246 1247 if (s_server_config.session_id_prefix) { 1248 if (strlen(s_server_config.session_id_prefix) >= 32) 1249 BIO_printf(bio_err, 1250 "warning: id_prefix is too long, only one new session will be possible\n"); 1251 else if (strlen(s_server_config.session_id_prefix) >= 16) 1252 BIO_printf(bio_err, 1253 "warning: id_prefix is too long if you use SSLv2\n"); 1254 if (!SSL_CTX_set_generate_session_id(ctx2, 1255 generate_session_id)) { 1256 BIO_printf(bio_err, 1257 "error setting 'id_prefix'\n"); 1258 ERR_print_errors(bio_err); 1259 goto end; 1260 } 1261 BIO_printf(bio_err, "id_prefix '%s' set.\n", 1262 s_server_config.session_id_prefix); 1263 } 1264 SSL_CTX_set_quiet_shutdown(ctx2, 1); 1265 if (s_server_config.bugs) 1266 SSL_CTX_set_options(ctx2, SSL_OP_ALL); 1267 SSL_CTX_set_options(ctx2, s_server_config.off); 1268 /* 1269 * DTLS: partial reads end up discarding unread UDP bytes :-( 1270 * Setting read ahead solves this problem. 1271 */ 1272 if (s_server_config.socket_type == SOCK_DGRAM) 1273 SSL_CTX_set_read_ahead(ctx2, 1); 1274 1275 if (s_server_config.state) 1276 SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback); 1277 1278 if (s_server_config.no_cache) 1279 SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF); 1280 else 1281 SSL_CTX_sess_set_cache_size(ctx2, 128); 1282 1283 if ((!SSL_CTX_load_verify_locations(ctx2, 1284 s_server_config.CAfile, s_server_config.CApath)) || 1285 (!SSL_CTX_set_default_verify_paths(ctx2))) { 1286 ERR_print_errors(bio_err); 1287 } 1288 if (s_server_config.vpm) 1289 SSL_CTX_set1_param(ctx2, s_server_config.vpm); 1290 } 1291 if (alpn_ctx.data) 1292 SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx); 1293 1294 if (s_server_config.groups_in != NULL) { 1295 if (SSL_CTX_set1_groups_list(ctx, s_server_config.groups_in) != 1) { 1296 BIO_printf(bio_err, "Failed to set groups '%s'\n", 1297 s_server_config.groups_in); 1298 goto end; 1299 } 1300 } 1301 1302 #ifndef OPENSSL_NO_DH 1303 if (!s_server_config.no_dhe) { 1304 DH *dh = NULL; 1305 1306 if (s_server_config.dhfile) 1307 dh = load_dh_param(s_server_config.dhfile); 1308 else if (s_server_config.cert_file) 1309 dh = load_dh_param(s_server_config.cert_file); 1310 1311 if (dh != NULL) 1312 BIO_printf(bio_s_out, "Setting temp DH parameters\n"); 1313 else 1314 BIO_printf(bio_s_out, "Using auto DH parameters\n"); 1315 (void) BIO_flush(bio_s_out); 1316 1317 if (dh == NULL) 1318 SSL_CTX_set_dh_auto(ctx, 1); 1319 else if (!SSL_CTX_set_tmp_dh(ctx, dh)) { 1320 BIO_printf(bio_err, 1321 "Error setting temp DH parameters\n"); 1322 ERR_print_errors(bio_err); 1323 DH_free(dh); 1324 goto end; 1325 } 1326 1327 if (ctx2) { 1328 if (!s_server_config.dhfile) { 1329 DH *dh2 = NULL; 1330 1331 if (s_server_config.cert_file2 != NULL) 1332 dh2 = load_dh_param( 1333 s_server_config.cert_file2); 1334 if (dh2 != NULL) { 1335 BIO_printf(bio_s_out, 1336 "Setting temp DH parameters\n"); 1337 (void) BIO_flush(bio_s_out); 1338 1339 DH_free(dh); 1340 dh = dh2; 1341 } 1342 } 1343 if (dh == NULL) 1344 SSL_CTX_set_dh_auto(ctx2, 1); 1345 else if (!SSL_CTX_set_tmp_dh(ctx2, dh)) { 1346 BIO_printf(bio_err, 1347 "Error setting temp DH parameters\n"); 1348 ERR_print_errors(bio_err); 1349 DH_free(dh); 1350 goto end; 1351 } 1352 } 1353 DH_free(dh); 1354 } 1355 #endif 1356 1357 if (!s_server_config.no_ecdhe && s_server_config.named_curve != NULL) { 1358 EC_KEY *ecdh = NULL; 1359 int nid; 1360 1361 if ((nid = OBJ_sn2nid(s_server_config.named_curve)) == 0) { 1362 BIO_printf(bio_err, "unknown curve name (%s)\n", 1363 s_server_config.named_curve); 1364 goto end; 1365 } 1366 if ((ecdh = EC_KEY_new_by_curve_name(nid)) == NULL) { 1367 BIO_printf(bio_err, "unable to create curve (%s)\n", 1368 s_server_config.named_curve); 1369 goto end; 1370 } 1371 BIO_printf(bio_s_out, "Setting temp ECDH parameters\n"); 1372 (void) BIO_flush(bio_s_out); 1373 1374 SSL_CTX_set_tmp_ecdh(ctx, ecdh); 1375 if (ctx2) 1376 SSL_CTX_set_tmp_ecdh(ctx2, ecdh); 1377 EC_KEY_free(ecdh); 1378 } 1379 1380 if (!set_cert_key_stuff(ctx, s_cert, s_key)) 1381 goto end; 1382 if (ctx2 && !set_cert_key_stuff(ctx2, s_cert2, s_key2)) 1383 goto end; 1384 if (s_dcert != NULL) { 1385 if (!set_cert_key_stuff(ctx, s_dcert, s_dkey)) 1386 goto end; 1387 } 1388 1389 if (s_server_config.cipher != NULL) { 1390 if (!SSL_CTX_set_cipher_list(ctx, s_server_config.cipher)) { 1391 BIO_printf(bio_err, "error setting cipher list\n"); 1392 ERR_print_errors(bio_err); 1393 goto end; 1394 } 1395 if (ctx2 && !SSL_CTX_set_cipher_list(ctx2, 1396 s_server_config.cipher)) { 1397 BIO_printf(bio_err, "error setting cipher list\n"); 1398 ERR_print_errors(bio_err); 1399 goto end; 1400 } 1401 } 1402 SSL_CTX_set_verify(ctx, s_server_config.server_verify, verify_callback); 1403 SSL_CTX_set_session_id_context(ctx, 1404 (void *) &s_server_session_id_context, 1405 sizeof s_server_session_id_context); 1406 1407 /* Set DTLS cookie generation and verification callbacks */ 1408 SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback); 1409 SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback); 1410 1411 if (ctx2) { 1412 SSL_CTX_set_verify(ctx2, s_server_config.server_verify, 1413 verify_callback); 1414 SSL_CTX_set_session_id_context(ctx2, 1415 (void *) &s_server_session_id_context, 1416 sizeof s_server_session_id_context); 1417 1418 s_server_config.tlsextcbp.biodebug = bio_s_out; 1419 SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb); 1420 SSL_CTX_set_tlsext_servername_arg(ctx2, 1421 &s_server_config.tlsextcbp); 1422 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb); 1423 SSL_CTX_set_tlsext_servername_arg(ctx, 1424 &s_server_config.tlsextcbp); 1425 } 1426 1427 if (s_server_config.CAfile != NULL) { 1428 SSL_CTX_set_client_CA_list(ctx, 1429 SSL_load_client_CA_file(s_server_config.CAfile)); 1430 if (ctx2) 1431 SSL_CTX_set_client_CA_list(ctx2, 1432 SSL_load_client_CA_file(s_server_config.CAfile)); 1433 } 1434 BIO_printf(bio_s_out, "ACCEPT\n"); 1435 (void) BIO_flush(bio_s_out); 1436 if (s_server_config.www) 1437 do_server(s_server_config.port, s_server_config.socket_type, 1438 &accept_socket, www_body, s_server_config.context); 1439 else 1440 do_server(s_server_config.port, s_server_config.socket_type, 1441 &accept_socket, sv_body, s_server_config.context); 1442 print_stats(bio_s_out, ctx); 1443 ret = 0; 1444 end: 1445 SSL_CTX_free(ctx); 1446 X509_free(s_cert); 1447 X509_free(s_dcert); 1448 EVP_PKEY_free(s_key); 1449 EVP_PKEY_free(s_dkey); 1450 free(pass); 1451 free(dpass); 1452 X509_VERIFY_PARAM_free(s_server_config.vpm); 1453 free(s_server_config.tlscstatp.host); 1454 free(s_server_config.tlscstatp.port); 1455 free(s_server_config.tlscstatp.path); 1456 SSL_CTX_free(ctx2); 1457 X509_free(s_cert2); 1458 EVP_PKEY_free(s_key2); 1459 free(alpn_ctx.data); 1460 if (bio_s_out != NULL) { 1461 BIO_free(bio_s_out); 1462 bio_s_out = NULL; 1463 } 1464 1465 return (ret); 1466 } 1467 1468 static void 1469 print_stats(BIO *bio, SSL_CTX *ssl_ctx) 1470 { 1471 BIO_printf(bio, "%4ld items in the session cache\n", 1472 SSL_CTX_sess_number(ssl_ctx)); 1473 BIO_printf(bio, "%4ld client connects (SSL_connect())\n", 1474 SSL_CTX_sess_connect(ssl_ctx)); 1475 BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n", 1476 SSL_CTX_sess_connect_renegotiate(ssl_ctx)); 1477 BIO_printf(bio, "%4ld client connects that finished\n", 1478 SSL_CTX_sess_connect_good(ssl_ctx)); 1479 BIO_printf(bio, "%4ld server accepts (SSL_accept())\n", 1480 SSL_CTX_sess_accept(ssl_ctx)); 1481 BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n", 1482 SSL_CTX_sess_accept_renegotiate(ssl_ctx)); 1483 BIO_printf(bio, "%4ld server accepts that finished\n", 1484 SSL_CTX_sess_accept_good(ssl_ctx)); 1485 BIO_printf(bio, "%4ld session cache hits\n", 1486 SSL_CTX_sess_hits(ssl_ctx)); 1487 BIO_printf(bio, "%4ld session cache misses\n", 1488 SSL_CTX_sess_misses(ssl_ctx)); 1489 BIO_printf(bio, "%4ld session cache timeouts\n", 1490 SSL_CTX_sess_timeouts(ssl_ctx)); 1491 BIO_printf(bio, "%4ld callback cache hits\n", 1492 SSL_CTX_sess_cb_hits(ssl_ctx)); 1493 BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n", 1494 SSL_CTX_sess_cache_full(ssl_ctx), 1495 SSL_CTX_sess_get_cache_size(ssl_ctx)); 1496 } 1497 1498 static int 1499 sv_body(char *hostname, int s, unsigned char *context) 1500 { 1501 char *buf = NULL; 1502 int ret = 1; 1503 int k, i; 1504 unsigned long l; 1505 SSL *con = NULL; 1506 BIO *sbio; 1507 struct timeval timeout; 1508 1509 if ((buf = malloc(bufsize)) == NULL) { 1510 BIO_printf(bio_err, "out of memory\n"); 1511 goto err; 1512 } 1513 if (s_server_config.nbio) { 1514 if (!s_server_config.quiet) 1515 BIO_printf(bio_err, "turning on non blocking io\n"); 1516 if (!BIO_socket_nbio(s, 1)) 1517 ERR_print_errors(bio_err); 1518 } 1519 1520 if (con == NULL) { 1521 con = SSL_new(ctx); 1522 if (s_server_config.tlsextdebug) { 1523 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1524 SSL_set_tlsext_debug_arg(con, bio_s_out); 1525 } 1526 if (s_server_config.tlsextstatus) { 1527 SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb); 1528 s_server_config.tlscstatp.err = bio_err; 1529 SSL_CTX_set_tlsext_status_arg(ctx, 1530 &s_server_config.tlscstatp); 1531 } 1532 if (context) 1533 SSL_set_session_id_context(con, context, 1534 strlen((char *) context)); 1535 } 1536 SSL_clear(con); 1537 1538 if (SSL_version(con) == DTLS1_VERSION) { 1539 1540 sbio = BIO_new_dgram(s, BIO_NOCLOSE); 1541 1542 if (s_server_config.enable_timeouts) { 1543 timeout.tv_sec = 0; 1544 timeout.tv_usec = DGRAM_RCV_TIMEOUT; 1545 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, 1546 &timeout); 1547 1548 timeout.tv_sec = 0; 1549 timeout.tv_usec = DGRAM_SND_TIMEOUT; 1550 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, 1551 &timeout); 1552 } 1553 if (s_server_config.socket_mtu > 28) { 1554 SSL_set_options(con, SSL_OP_NO_QUERY_MTU); 1555 SSL_set_mtu(con, s_server_config.socket_mtu - 28); 1556 } else 1557 /* want to do MTU discovery */ 1558 BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); 1559 1560 /* turn on cookie exchange */ 1561 SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE); 1562 } else 1563 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1564 1565 if (s_server_config.nbio_test) { 1566 BIO *test; 1567 1568 test = BIO_new(BIO_f_nbio_test()); 1569 sbio = BIO_push(test, sbio); 1570 } 1571 1572 SSL_set_bio(con, sbio, sbio); 1573 SSL_set_accept_state(con); 1574 /* SSL_set_fd(con,s); */ 1575 1576 if (s_server_config.debug) { 1577 SSL_set_debug(con, 1); 1578 BIO_set_callback(SSL_get_rbio(con), bio_dump_callback); 1579 BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out); 1580 } 1581 if (s_server_config.msg) { 1582 SSL_set_msg_callback(con, msg_cb); 1583 SSL_set_msg_callback_arg(con, bio_s_out); 1584 } 1585 if (s_server_config.tlsextdebug) { 1586 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1587 SSL_set_tlsext_debug_arg(con, bio_s_out); 1588 } 1589 1590 for (;;) { 1591 int read_from_terminal; 1592 int read_from_sslcon; 1593 struct pollfd pfd[2]; 1594 int ptimeout; 1595 1596 read_from_terminal = 0; 1597 read_from_sslcon = SSL_pending(con); 1598 1599 if (!read_from_sslcon) { 1600 pfd[0].fd = fileno(stdin); 1601 pfd[0].events = POLLIN; 1602 pfd[1].fd = s; 1603 pfd[1].events = POLLIN; 1604 1605 if ((SSL_version(con) == DTLS1_VERSION) && 1606 DTLSv1_get_timeout(con, &timeout)) 1607 ptimeout = timeout.tv_sec * 1000 + 1608 timeout.tv_usec / 1000; 1609 else 1610 ptimeout = -1; 1611 1612 i = poll(pfd, 2, ptimeout); 1613 1614 if ((SSL_version(con) == DTLS1_VERSION) && 1615 DTLSv1_handle_timeout(con) > 0) { 1616 BIO_printf(bio_err, "TIMEOUT occured\n"); 1617 } 1618 if (i <= 0) 1619 continue; 1620 if (pfd[0].revents) { 1621 if ((pfd[0].revents & (POLLERR|POLLNVAL))) 1622 continue; 1623 read_from_terminal = 1; 1624 } 1625 if (pfd[1].revents) { 1626 if ((pfd[1].revents & (POLLERR|POLLNVAL))) 1627 continue; 1628 read_from_sslcon = 1; 1629 } 1630 } 1631 if (read_from_terminal) { 1632 if (s_server_config.crlf) { 1633 int j, lf_num; 1634 1635 i = read(fileno(stdin), buf, bufsize / 2); 1636 lf_num = 0; 1637 /* both loops are skipped when i <= 0 */ 1638 for (j = 0; j < i; j++) 1639 if (buf[j] == '\n') 1640 lf_num++; 1641 for (j = i - 1; j >= 0; j--) { 1642 buf[j + lf_num] = buf[j]; 1643 if (buf[j] == '\n') { 1644 lf_num--; 1645 i++; 1646 buf[j + lf_num] = '\r'; 1647 } 1648 } 1649 assert(lf_num == 0); 1650 } else 1651 i = read(fileno(stdin), buf, bufsize); 1652 if (!s_server_config.quiet) { 1653 if ((i <= 0) || (buf[0] == 'Q')) { 1654 BIO_printf(bio_s_out, "DONE\n"); 1655 shutdown(s, SHUT_RD); 1656 close(s); 1657 close_accept_socket(); 1658 ret = -11; 1659 goto err; 1660 } 1661 if ((i <= 0) || (buf[0] == 'q')) { 1662 BIO_printf(bio_s_out, "DONE\n"); 1663 if (SSL_version(con) != DTLS1_VERSION) { 1664 shutdown(s, SHUT_RD); 1665 close(s); 1666 } 1667 /* 1668 * close_accept_socket(); ret= -11; 1669 */ 1670 goto err; 1671 } 1672 if ((buf[0] == 'r') && 1673 ((buf[1] == '\n') || (buf[1] == '\r'))) { 1674 SSL_renegotiate(con); 1675 i = SSL_do_handshake(con); 1676 printf("SSL_do_handshake -> %d\n", i); 1677 i = 0; /* 13; */ 1678 continue; 1679 /* 1680 * RE-NEGOTIATE\n"); 1681 */ 1682 } 1683 if ((buf[0] == 'R') && 1684 ((buf[1] == '\n') || (buf[1] == '\r'))) { 1685 SSL_set_verify(con, 1686 SSL_VERIFY_PEER | 1687 SSL_VERIFY_CLIENT_ONCE, 1688 NULL); 1689 SSL_renegotiate(con); 1690 i = SSL_do_handshake(con); 1691 printf("SSL_do_handshake -> %d\n", i); 1692 i = 0; /* 13; */ 1693 continue; 1694 /* 1695 * RE-NEGOTIATE asking for client 1696 * cert\n"); 1697 */ 1698 } 1699 if (buf[0] == 'P') { 1700 static const char *str = 1701 "Lets print some clear text\n"; 1702 BIO_write(SSL_get_wbio(con), str, 1703 strlen(str)); 1704 } 1705 if (buf[0] == 'S') { 1706 print_stats(bio_s_out, 1707 SSL_get_SSL_CTX(con)); 1708 } 1709 } 1710 l = k = 0; 1711 for (;;) { 1712 /* should do a select for the write */ 1713 #ifdef RENEG 1714 { 1715 static count = 0; 1716 if (++count == 100) { 1717 count = 0; 1718 SSL_renegotiate(con); 1719 } 1720 } 1721 #endif 1722 k = SSL_write(con, &(buf[l]), (unsigned int) i); 1723 switch (SSL_get_error(con, k)) { 1724 case SSL_ERROR_NONE: 1725 break; 1726 case SSL_ERROR_WANT_WRITE: 1727 case SSL_ERROR_WANT_READ: 1728 case SSL_ERROR_WANT_X509_LOOKUP: 1729 BIO_printf(bio_s_out, "Write BLOCK\n"); 1730 break; 1731 case SSL_ERROR_SYSCALL: 1732 case SSL_ERROR_SSL: 1733 BIO_printf(bio_s_out, "ERROR\n"); 1734 ERR_print_errors(bio_err); 1735 ret = 1; 1736 goto err; 1737 /* break; */ 1738 case SSL_ERROR_ZERO_RETURN: 1739 BIO_printf(bio_s_out, "DONE\n"); 1740 ret = 1; 1741 goto err; 1742 } 1743 if (k <= 0) 1744 continue; 1745 l += k; 1746 i -= k; 1747 if (i <= 0) 1748 break; 1749 } 1750 } 1751 if (read_from_sslcon) { 1752 if (!SSL_is_init_finished(con)) { 1753 i = init_ssl_connection(con); 1754 1755 if (i < 0) { 1756 ret = 0; 1757 goto err; 1758 } else if (i == 0) { 1759 ret = 1; 1760 goto err; 1761 } 1762 } else { 1763 again: 1764 i = SSL_read(con, (char *) buf, bufsize); 1765 switch (SSL_get_error(con, i)) { 1766 case SSL_ERROR_NONE: { 1767 int len, n; 1768 for (len = 0; len < i;) { 1769 do { 1770 n = write(fileno(stdout), buf + len, i - len); 1771 } while (n == -1 && errno == EINTR); 1772 1773 if (n == -1) { 1774 BIO_printf(bio_s_out, "ERROR\n"); 1775 goto err; 1776 } 1777 len += n; 1778 } 1779 } 1780 if (SSL_pending(con)) 1781 goto again; 1782 break; 1783 case SSL_ERROR_WANT_WRITE: 1784 case SSL_ERROR_WANT_READ: 1785 BIO_printf(bio_s_out, "Read BLOCK\n"); 1786 break; 1787 case SSL_ERROR_SYSCALL: 1788 case SSL_ERROR_SSL: 1789 BIO_printf(bio_s_out, "ERROR\n"); 1790 ERR_print_errors(bio_err); 1791 ret = 1; 1792 goto err; 1793 case SSL_ERROR_ZERO_RETURN: 1794 BIO_printf(bio_s_out, "DONE\n"); 1795 ret = 1; 1796 goto err; 1797 } 1798 } 1799 } 1800 } 1801 err: 1802 if (con != NULL) { 1803 BIO_printf(bio_s_out, "shutting down SSL\n"); 1804 SSL_set_shutdown(con, 1805 SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); 1806 SSL_free(con); 1807 } 1808 BIO_printf(bio_s_out, "CONNECTION CLOSED\n"); 1809 freezero(buf, bufsize); 1810 if (ret >= 0) 1811 BIO_printf(bio_s_out, "ACCEPT\n"); 1812 return (ret); 1813 } 1814 1815 static void 1816 close_accept_socket(void) 1817 { 1818 BIO_printf(bio_err, "shutdown accept socket\n"); 1819 if (accept_socket >= 0) { 1820 shutdown(accept_socket, SHUT_RDWR); 1821 close(accept_socket); 1822 } 1823 } 1824 1825 static int 1826 init_ssl_connection(SSL *con) 1827 { 1828 int i; 1829 const char *str; 1830 X509 *peer; 1831 long verify_error; 1832 char buf[BUFSIZ]; 1833 unsigned char *exportedkeymat; 1834 1835 i = SSL_accept(con); 1836 if (i <= 0) { 1837 if (BIO_sock_should_retry(i)) { 1838 BIO_printf(bio_s_out, "DELAY\n"); 1839 return (1); 1840 } 1841 BIO_printf(bio_err, "ERROR\n"); 1842 verify_error = SSL_get_verify_result(con); 1843 if (verify_error != X509_V_OK) { 1844 BIO_printf(bio_err, "verify error:%s\n", 1845 X509_verify_cert_error_string(verify_error)); 1846 } else 1847 ERR_print_errors(bio_err); 1848 return (0); 1849 } 1850 PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con)); 1851 1852 peer = SSL_get_peer_certificate(con); 1853 if (peer != NULL) { 1854 BIO_printf(bio_s_out, "Client certificate\n"); 1855 PEM_write_bio_X509(bio_s_out, peer); 1856 X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof buf); 1857 BIO_printf(bio_s_out, "subject=%s\n", buf); 1858 X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof buf); 1859 BIO_printf(bio_s_out, "issuer=%s\n", buf); 1860 X509_free(peer); 1861 } 1862 if (SSL_get_shared_ciphers(con, buf, sizeof buf) != NULL) 1863 BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf); 1864 str = SSL_CIPHER_get_name(SSL_get_current_cipher(con)); 1865 BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)"); 1866 1867 #ifndef OPENSSL_NO_SRTP 1868 { 1869 SRTP_PROTECTION_PROFILE *srtp_profile 1870 = SSL_get_selected_srtp_profile(con); 1871 1872 if (srtp_profile) 1873 BIO_printf(bio_s_out, 1874 "SRTP Extension negotiated, profile=%s\n", 1875 srtp_profile->name); 1876 } 1877 #endif 1878 if (SSL_cache_hit(con)) 1879 BIO_printf(bio_s_out, "Reused session-id\n"); 1880 BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n", 1881 SSL_get_secure_renegotiation_support(con) ? "" : " NOT"); 1882 if (s_server_config.keymatexportlabel != NULL) { 1883 BIO_printf(bio_s_out, "Keying material exporter:\n"); 1884 BIO_printf(bio_s_out, " Label: '%s'\n", 1885 s_server_config.keymatexportlabel); 1886 BIO_printf(bio_s_out, " Length: %i bytes\n", 1887 s_server_config.keymatexportlen); 1888 exportedkeymat = malloc(s_server_config.keymatexportlen); 1889 if (exportedkeymat != NULL) { 1890 if (!SSL_export_keying_material(con, exportedkeymat, 1891 s_server_config.keymatexportlen, 1892 s_server_config.keymatexportlabel, 1893 strlen(s_server_config.keymatexportlabel), 1894 NULL, 0, 0)) { 1895 BIO_printf(bio_s_out, " Error\n"); 1896 } else { 1897 BIO_printf(bio_s_out, " Keying material: "); 1898 for (i = 0; i < s_server_config.keymatexportlen; i++) 1899 BIO_printf(bio_s_out, "%02X", 1900 exportedkeymat[i]); 1901 BIO_printf(bio_s_out, "\n"); 1902 } 1903 free(exportedkeymat); 1904 } 1905 } 1906 return (1); 1907 } 1908 1909 #ifndef OPENSSL_NO_DH 1910 static DH * 1911 load_dh_param(const char *dhfile) 1912 { 1913 DH *ret = NULL; 1914 BIO *bio; 1915 1916 if ((bio = BIO_new_file(dhfile, "r")) == NULL) 1917 goto err; 1918 ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); 1919 err: 1920 BIO_free(bio); 1921 return (ret); 1922 } 1923 #endif 1924 1925 static int 1926 www_body(char *hostname, int s, unsigned char *context) 1927 { 1928 char *buf = NULL; 1929 int ret = 1; 1930 int i, j, k, dot; 1931 SSL *con; 1932 const SSL_CIPHER *c; 1933 BIO *io, *ssl_bio, *sbio; 1934 1935 buf = malloc(bufsize); 1936 if (buf == NULL) 1937 return (0); 1938 io = BIO_new(BIO_f_buffer()); 1939 ssl_bio = BIO_new(BIO_f_ssl()); 1940 if ((io == NULL) || (ssl_bio == NULL)) 1941 goto err; 1942 1943 if (s_server_config.nbio) { 1944 if (!s_server_config.quiet) 1945 BIO_printf(bio_err, "turning on non blocking io\n"); 1946 if (!BIO_socket_nbio(s, 1)) 1947 ERR_print_errors(bio_err); 1948 } 1949 1950 /* lets make the output buffer a reasonable size */ 1951 if (!BIO_set_write_buffer_size(io, bufsize)) 1952 goto err; 1953 1954 if ((con = SSL_new(ctx)) == NULL) 1955 goto err; 1956 if (s_server_config.tlsextdebug) { 1957 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1958 SSL_set_tlsext_debug_arg(con, bio_s_out); 1959 } 1960 if (context) 1961 SSL_set_session_id_context(con, context, 1962 strlen((char *) context)); 1963 1964 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1965 if (s_server_config.nbio_test) { 1966 BIO *test; 1967 1968 test = BIO_new(BIO_f_nbio_test()); 1969 sbio = BIO_push(test, sbio); 1970 } 1971 SSL_set_bio(con, sbio, sbio); 1972 SSL_set_accept_state(con); 1973 1974 /* SSL_set_fd(con,s); */ 1975 BIO_set_ssl(ssl_bio, con, BIO_CLOSE); 1976 BIO_push(io, ssl_bio); 1977 1978 if (s_server_config.debug) { 1979 SSL_set_debug(con, 1); 1980 BIO_set_callback(SSL_get_rbio(con), bio_dump_callback); 1981 BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out); 1982 } 1983 if (s_server_config.msg) { 1984 SSL_set_msg_callback(con, msg_cb); 1985 SSL_set_msg_callback_arg(con, bio_s_out); 1986 } 1987 for (;;) { 1988 i = BIO_gets(io, buf, bufsize - 1); 1989 if (i < 0) { /* error */ 1990 if (!BIO_should_retry(io)) { 1991 if (!s_server_config.quiet) 1992 ERR_print_errors(bio_err); 1993 goto err; 1994 } else { 1995 if (s_server_config.debug) { 1996 BIO_printf(bio_s_out, "read R BLOCK\n"); 1997 sleep(1); 1998 } 1999 continue; 2000 } 2001 } else if (i == 0) { /* end of input */ 2002 ret = 1; 2003 goto end; 2004 } 2005 /* else we have data */ 2006 if (((s_server_config.www == 1) && 2007 (strncmp("GET ", buf, 4) == 0)) || 2008 ((s_server_config.www == 2) && 2009 (strncmp("GET /stats ", buf, 11) == 0))) { 2010 char *p; 2011 X509 *peer; 2012 STACK_OF(SSL_CIPHER) *sk; 2013 static const char *space = " "; 2014 2015 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); 2016 BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n"); 2017 BIO_puts(io, "<pre>\n"); 2018 /* BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/ 2019 BIO_puts(io, "\n"); 2020 for (i = 0; i < local_argc; i++) { 2021 BIO_puts(io, local_argv[i]); 2022 BIO_write(io, " ", 1); 2023 } 2024 BIO_puts(io, "\n"); 2025 2026 BIO_printf(io, 2027 "Secure Renegotiation IS%s supported\n", 2028 SSL_get_secure_renegotiation_support(con) ? 2029 "" : " NOT"); 2030 2031 /* 2032 * The following is evil and should not really be 2033 * done 2034 */ 2035 BIO_printf(io, 2036 "Ciphers supported in s_server binary\n"); 2037 sk = SSL_get_ciphers(con); 2038 j = sk_SSL_CIPHER_num(sk); 2039 for (i = 0; i < j; i++) { 2040 c = sk_SSL_CIPHER_value(sk, i); 2041 BIO_printf(io, "%-11s:%-25s", 2042 SSL_CIPHER_get_version(c), 2043 SSL_CIPHER_get_name(c)); 2044 if ((((i + 1) % 2) == 0) && (i + 1 != j)) 2045 BIO_puts(io, "\n"); 2046 } 2047 BIO_puts(io, "\n"); 2048 p = SSL_get_shared_ciphers(con, buf, bufsize); 2049 if (p != NULL) { 2050 BIO_printf(io, 2051 "---\nCiphers common between both SSL end points:\n"); 2052 j = i = 0; 2053 while (*p) { 2054 if (*p == ':') { 2055 BIO_write(io, space, 26 - j); 2056 i++; 2057 j = 0; 2058 BIO_write(io, 2059 ((i % 3) ? " " : "\n"), 1); 2060 } else { 2061 BIO_write(io, p, 1); 2062 j++; 2063 } 2064 p++; 2065 } 2066 BIO_puts(io, "\n"); 2067 } 2068 BIO_printf(io, (SSL_cache_hit(con) 2069 ? "---\nReused, " 2070 : "---\nNew, ")); 2071 c = SSL_get_current_cipher(con); 2072 BIO_printf(io, "%s, Cipher is %s\n", 2073 SSL_CIPHER_get_version(c), 2074 SSL_CIPHER_get_name(c)); 2075 SSL_SESSION_print(io, SSL_get_session(con)); 2076 BIO_printf(io, "---\n"); 2077 print_stats(io, SSL_get_SSL_CTX(con)); 2078 BIO_printf(io, "---\n"); 2079 peer = SSL_get_peer_certificate(con); 2080 if (peer != NULL) { 2081 BIO_printf(io, "Client certificate\n"); 2082 X509_print(io, peer); 2083 PEM_write_bio_X509(io, peer); 2084 } else 2085 BIO_puts(io, 2086 "no client certificate available\n"); 2087 BIO_puts(io, "</BODY></HTML>\r\n\r\n"); 2088 break; 2089 } else if ((s_server_config.www == 2 || 2090 s_server_config.www == 3) && 2091 (strncmp("GET /", buf, 5) == 0)) { 2092 BIO *file; 2093 char *p, *e; 2094 static const char *text = "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n"; 2095 2096 /* skip the '/' */ 2097 p = &(buf[5]); 2098 2099 dot = 1; 2100 for (e = p; *e != '\0'; e++) { 2101 if (e[0] == ' ') 2102 break; 2103 2104 switch (dot) { 2105 case 1: 2106 dot = (e[0] == '.') ? 2 : 0; 2107 break; 2108 case 2: 2109 dot = (e[0] == '.') ? 3 : 0; 2110 break; 2111 case 3: 2112 dot = (e[0] == '/' || e[0] == '\\') ? 2113 -1 : 0; 2114 break; 2115 } 2116 if (dot == 0) 2117 dot = (e[0] == '/' || e[0] == '\\') ? 2118 1 : 0; 2119 } 2120 dot = (dot == 3) || (dot == -1); /* filename contains 2121 * ".." component */ 2122 2123 if (*e == '\0') { 2124 BIO_puts(io, text); 2125 BIO_printf(io, 2126 "'%s' is an invalid file name\r\n", p); 2127 break; 2128 } 2129 *e = '\0'; 2130 2131 if (dot) { 2132 BIO_puts(io, text); 2133 BIO_printf(io, 2134 "'%s' contains '..' reference\r\n", p); 2135 break; 2136 } 2137 if (*p == '/') { 2138 BIO_puts(io, text); 2139 BIO_printf(io, 2140 "'%s' is an invalid path\r\n", p); 2141 break; 2142 } 2143 /* if a directory, do the index thang */ 2144 if (app_isdir(p) > 0) { 2145 BIO_puts(io, text); 2146 BIO_printf(io, "'%s' is a directory\r\n", p); 2147 break; 2148 } 2149 if ((file = BIO_new_file(p, "r")) == NULL) { 2150 BIO_puts(io, text); 2151 BIO_printf(io, "Error opening '%s'\r\n", p); 2152 ERR_print_errors(io); 2153 break; 2154 } 2155 if (!s_server_config.quiet) 2156 BIO_printf(bio_err, "FILE:%s\n", p); 2157 2158 if (s_server_config.www == 2) { 2159 i = strlen(p); 2160 if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) || 2161 ((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) || 2162 ((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0))) 2163 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); 2164 else 2165 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n"); 2166 } 2167 /* send the file */ 2168 for (;;) { 2169 i = BIO_read(file, buf, bufsize); 2170 if (i <= 0) 2171 break; 2172 2173 #ifdef RENEG 2174 total_bytes += i; 2175 fprintf(stderr, "%d\n", i); 2176 if (total_bytes > 3 * 1024) { 2177 total_bytes = 0; 2178 fprintf(stderr, "RENEGOTIATE\n"); 2179 SSL_renegotiate(con); 2180 } 2181 #endif 2182 2183 for (j = 0; j < i;) { 2184 #ifdef RENEG 2185 { 2186 static count = 0; 2187 if (++count == 13) { 2188 SSL_renegotiate(con); 2189 } 2190 } 2191 #endif 2192 k = BIO_write(io, &(buf[j]), i - j); 2193 if (k <= 0) { 2194 if (!BIO_should_retry(io)) 2195 goto write_error; 2196 else { 2197 BIO_printf(bio_s_out, 2198 "rwrite W BLOCK\n"); 2199 } 2200 } else { 2201 j += k; 2202 } 2203 } 2204 } 2205 write_error: 2206 BIO_free(file); 2207 break; 2208 } 2209 } 2210 2211 for (;;) { 2212 i = (int) BIO_flush(io); 2213 if (i <= 0) { 2214 if (!BIO_should_retry(io)) 2215 break; 2216 } else 2217 break; 2218 } 2219 end: 2220 /* make sure we re-use sessions */ 2221 SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); 2222 2223 err: 2224 2225 if (ret >= 0) 2226 BIO_printf(bio_s_out, "ACCEPT\n"); 2227 2228 free(buf); 2229 BIO_free_all(io); 2230 /* if (ssl_bio != NULL) BIO_free(ssl_bio);*/ 2231 return (ret); 2232 } 2233 2234 #define MAX_SESSION_ID_ATTEMPTS 10 2235 static int 2236 generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len) 2237 { 2238 unsigned int count = 0; 2239 do { 2240 arc4random_buf(id, *id_len); 2241 /* 2242 * Prefix the session_id with the required prefix. NB: If our 2243 * prefix is too long, clip it - but there will be worse 2244 * effects anyway, eg. the server could only possibly create 2245 * 1 session ID (ie. the prefix!) so all future session 2246 * negotiations will fail due to conflicts. 2247 */ 2248 memcpy(id, s_server_config.session_id_prefix, 2249 (strlen(s_server_config.session_id_prefix) < *id_len) ? 2250 strlen(s_server_config.session_id_prefix) : *id_len); 2251 } 2252 while (SSL_has_matching_session_id(ssl, id, *id_len) && 2253 (++count < MAX_SESSION_ID_ATTEMPTS)); 2254 if (count >= MAX_SESSION_ID_ATTEMPTS) 2255 return 0; 2256 return 1; 2257 } 2258 2259 static int 2260 ssl_servername_cb(SSL *s, int *ad, void *arg) 2261 { 2262 tlsextctx *p = (tlsextctx *) arg; 2263 const char *servername = SSL_get_servername(s, 2264 TLSEXT_NAMETYPE_host_name); 2265 2266 if (servername && p->biodebug) 2267 BIO_printf(p->biodebug, "Hostname in TLS extension: \"%s\"\n", 2268 servername); 2269 2270 if (!p->servername) 2271 return SSL_TLSEXT_ERR_NOACK; 2272 2273 if (servername) { 2274 if (strcmp(servername, p->servername)) 2275 return p->extension_error; 2276 if (ctx2) { 2277 BIO_printf(p->biodebug, "Switching server context.\n"); 2278 SSL_set_SSL_CTX(s, ctx2); 2279 } 2280 } 2281 return SSL_TLSEXT_ERR_OK; 2282 } 2283 2284 /* Certificate Status callback. This is called when a client includes a 2285 * certificate status request extension. 2286 * 2287 * This is a simplified version. It examines certificates each time and 2288 * makes one OCSP responder query for each request. 2289 * 2290 * A full version would store details such as the OCSP certificate IDs and 2291 * minimise the number of OCSP responses by caching them until they were 2292 * considered "expired". 2293 */ 2294 2295 static int 2296 cert_status_cb(SSL *s, void *arg) 2297 { 2298 tlsextstatusctx *srctx = arg; 2299 BIO *err = srctx->err; 2300 char *host = NULL, *port = NULL, *path = NULL; 2301 int use_ssl; 2302 unsigned char *rspder = NULL; 2303 int rspderlen; 2304 STACK_OF(OPENSSL_STRING) *aia = NULL; 2305 X509 *x = NULL; 2306 X509_STORE_CTX inctx; 2307 X509_OBJECT obj; 2308 OCSP_REQUEST *req = NULL; 2309 OCSP_RESPONSE *resp = NULL; 2310 OCSP_CERTID *id = NULL; 2311 STACK_OF(X509_EXTENSION) *exts; 2312 int ret = SSL_TLSEXT_ERR_NOACK; 2313 int i; 2314 2315 if (srctx->verbose) 2316 BIO_puts(err, "cert_status: callback called\n"); 2317 /* Build up OCSP query from server certificate */ 2318 x = SSL_get_certificate(s); 2319 aia = X509_get1_ocsp(x); 2320 if (aia) { 2321 if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0), 2322 &host, &port, &path, &use_ssl)) { 2323 BIO_puts(err, "cert_status: can't parse AIA URL\n"); 2324 goto err; 2325 } 2326 if (srctx->verbose) 2327 BIO_printf(err, "cert_status: AIA URL: %s\n", 2328 sk_OPENSSL_STRING_value(aia, 0)); 2329 } else { 2330 if (!srctx->host) { 2331 BIO_puts(srctx->err, 2332 "cert_status: no AIA and no default responder URL\n"); 2333 goto done; 2334 } 2335 host = srctx->host; 2336 path = srctx->path; 2337 port = srctx->port; 2338 use_ssl = srctx->use_ssl; 2339 } 2340 2341 if (!X509_STORE_CTX_init(&inctx, 2342 SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)), 2343 NULL, NULL)) 2344 goto err; 2345 if (X509_STORE_get_by_subject(&inctx, X509_LU_X509, 2346 X509_get_issuer_name(x), &obj) <= 0) { 2347 BIO_puts(err, 2348 "cert_status: Can't retrieve issuer certificate.\n"); 2349 X509_STORE_CTX_cleanup(&inctx); 2350 goto done; 2351 } 2352 req = OCSP_REQUEST_new(); 2353 if (!req) 2354 goto err; 2355 id = OCSP_cert_to_id(NULL, x, obj.data.x509); 2356 X509_free(obj.data.x509); 2357 X509_STORE_CTX_cleanup(&inctx); 2358 if (!id) 2359 goto err; 2360 if (!OCSP_request_add0_id(req, id)) 2361 goto err; 2362 id = NULL; 2363 /* Add any extensions to the request */ 2364 SSL_get_tlsext_status_exts(s, &exts); 2365 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) { 2366 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); 2367 if (!OCSP_REQUEST_add_ext(req, ext, -1)) 2368 goto err; 2369 } 2370 resp = process_responder(err, req, host, path, port, use_ssl, NULL, 2371 srctx->timeout); 2372 if (!resp) { 2373 BIO_puts(err, "cert_status: error querying responder\n"); 2374 goto done; 2375 } 2376 rspderlen = i2d_OCSP_RESPONSE(resp, &rspder); 2377 if (rspderlen <= 0) 2378 goto err; 2379 SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen); 2380 if (srctx->verbose) { 2381 BIO_puts(err, "cert_status: ocsp response sent:\n"); 2382 OCSP_RESPONSE_print(err, resp, 2); 2383 } 2384 ret = SSL_TLSEXT_ERR_OK; 2385 done: 2386 if (ret != SSL_TLSEXT_ERR_OK) 2387 ERR_print_errors(err); 2388 if (aia) { 2389 free(host); 2390 free(path); 2391 free(port); 2392 X509_email_free(aia); 2393 } 2394 if (id) 2395 OCSP_CERTID_free(id); 2396 if (req) 2397 OCSP_REQUEST_free(req); 2398 if (resp) 2399 OCSP_RESPONSE_free(resp); 2400 return ret; 2401 err: 2402 ret = SSL_TLSEXT_ERR_ALERT_FATAL; 2403 goto done; 2404 } 2405 2406 static int 2407 alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, 2408 const unsigned char *in, unsigned int inlen, void *arg) 2409 { 2410 tlsextalpnctx *alpn_ctx = arg; 2411 2412 if (!s_server_config.quiet) { 2413 /* We can assume that in is syntactically valid. */ 2414 unsigned i; 2415 2416 BIO_printf(bio_s_out, 2417 "ALPN protocols advertised by the client: "); 2418 for (i = 0; i < inlen; ) { 2419 if (i) 2420 BIO_write(bio_s_out, ", ", 2); 2421 BIO_write(bio_s_out, &in[i + 1], in[i]); 2422 i += in[i] + 1; 2423 } 2424 BIO_write(bio_s_out, "\n", 1); 2425 } 2426 2427 if (SSL_select_next_proto((unsigned char**)out, outlen, alpn_ctx->data, 2428 alpn_ctx->len, in, inlen) != OPENSSL_NPN_NEGOTIATED) 2429 return (SSL_TLSEXT_ERR_NOACK); 2430 2431 if (!s_server_config.quiet) { 2432 BIO_printf(bio_s_out, "ALPN protocols selected: "); 2433 BIO_write(bio_s_out, *out, *outlen); 2434 BIO_write(bio_s_out, "\n", 1); 2435 } 2436 2437 return (SSL_TLSEXT_ERR_OK); 2438 } 2439