1 /* $OpenBSD: s_server.c,v 1.43 2020/07/27 13:46:48 inoguchi 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 = "accept", 477 .argname = "port", 478 .desc = "Port to accept on (default is 4433)", 479 .type = OPTION_ARG_FUNC, 480 .opt.argfunc = s_server_opt_port, 481 }, 482 { 483 .name = "alpn", 484 .argname = "protocols", 485 .desc = "Set the advertised protocols for the ALPN extension" 486 " (comma-separated list)", 487 .type = OPTION_ARG, 488 .opt.arg = &s_server_config.alpn_in, 489 }, 490 { 491 .name = "bugs", 492 .desc = "Turn on SSL bug compatibility", 493 .type = OPTION_FLAG, 494 .opt.flag = &s_server_config.bugs, 495 }, 496 { 497 .name = "CAfile", 498 .argname = "file", 499 .desc = "PEM format file of CA certificates", 500 .type = OPTION_ARG, 501 .opt.arg = &s_server_config.CAfile, 502 }, 503 { 504 .name = "CApath", 505 .argname = "directory", 506 .desc = "PEM format directory of CA certificates", 507 .type = OPTION_ARG, 508 .opt.arg = &s_server_config.CApath, 509 }, 510 { 511 .name = "cert", 512 .argname = "file", 513 .desc = "Certificate file to use\n" 514 "(default is " TEST_CERT ")", 515 .type = OPTION_ARG, 516 .opt.arg = &s_server_config.cert_file, 517 }, 518 { 519 .name = "cert2", 520 .argname = "file", 521 .desc = "Certificate file to use for servername\n" 522 "(default is " TEST_CERT2 ")", 523 .type = OPTION_ARG, 524 .opt.arg = &s_server_config.cert_file2, 525 }, 526 { 527 .name = "certform", 528 .argname = "fmt", 529 .desc = "Certificate format (PEM or DER) PEM default", 530 .type = OPTION_ARG_FORMAT, 531 .opt.value = &s_server_config.cert_format, 532 }, 533 #ifndef OPENSSL_NO_DTLS1 534 { 535 .name = "chain", 536 .type = OPTION_FLAG, 537 .opt.flag = &s_server_config.cert_chain, 538 }, 539 #endif 540 { 541 .name = "cipher", 542 .argname = "list", 543 .desc = "List of ciphers to enable (see `openssl ciphers`)", 544 .type = OPTION_ARG, 545 .opt.arg = &s_server_config.cipher, 546 }, 547 { 548 .name = "context", 549 .argname = "id", 550 .desc = "Set session ID context", 551 .type = OPTION_ARG_FUNC, 552 .opt.argfunc = s_server_opt_context, 553 }, 554 { 555 .name = "crlf", 556 .desc = "Convert LF from terminal into CRLF", 557 .type = OPTION_FLAG, 558 .opt.flag = &s_server_config.crlf, 559 }, 560 { 561 .name = "dcert", 562 .argname = "file", 563 .desc = "Second certificate file to use (usually for DSA)", 564 .type = OPTION_ARG, 565 .opt.arg = &s_server_config.dcert_file, 566 }, 567 { 568 .name = "dcertform", 569 .argname = "fmt", 570 .desc = "Second certificate format (PEM or DER) PEM default", 571 .type = OPTION_ARG_FORMAT, 572 .opt.value = &s_server_config.dcert_format, 573 }, 574 { 575 .name = "debug", 576 .desc = "Print more output", 577 .type = OPTION_FLAG, 578 .opt.flag = &s_server_config.debug, 579 }, 580 { 581 .name = "dhparam", 582 .argname = "file", 583 .desc = "DH parameter file to use, in cert file if not specified", 584 .type = OPTION_ARG, 585 .opt.arg = &s_server_config.dhfile, 586 }, 587 { 588 .name = "dkey", 589 .argname = "file", 590 .desc = "Second private key file to use (usually for DSA)", 591 .type = OPTION_ARG, 592 .opt.arg = &s_server_config.dkey_file, 593 }, 594 { 595 .name = "dkeyform", 596 .argname = "fmt", 597 .desc = "Second key format (PEM or DER) PEM default", 598 .type = OPTION_ARG_FORMAT, 599 .opt.value = &s_server_config.dkey_format, 600 }, 601 { 602 .name = "dpass", 603 .argname = "arg", 604 .desc = "Second private key file pass phrase source", 605 .type = OPTION_ARG, 606 .opt.arg = &s_server_config.dpassarg, 607 }, 608 #ifndef OPENSSL_NO_DTLS1 609 { 610 .name = "dtls1", 611 .desc = "Just talk DTLSv1", 612 .type = OPTION_FUNC, 613 .opt.func = s_server_protocol_version_dtls1, 614 }, 615 #endif 616 { 617 .name = "groups", 618 .argname = "list", 619 .desc = "Specify EC groups (colon-separated list)", 620 .type = OPTION_ARG, 621 .opt.arg = &s_server_config.groups_in, 622 }, 623 { 624 .name = "HTTP", 625 .desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>", 626 .type = OPTION_VALUE, 627 .opt.value = &s_server_config.www, 628 .value = 3, 629 }, 630 { 631 .name = "id_prefix", 632 .argname = "arg", 633 .desc = "Generate SSL/TLS session IDs prefixed by 'arg'", 634 .type = OPTION_ARG, 635 .opt.arg = &s_server_config.session_id_prefix, 636 }, 637 { 638 .name = "key", 639 .argname = "file", 640 .desc = "Private Key file to use, in cert file if\n" 641 "not specified (default is " TEST_CERT ")", 642 .type = OPTION_ARG, 643 .opt.arg = &s_server_config.key_file, 644 }, 645 { 646 .name = "key2", 647 .argname = "file", 648 .desc = "Private Key file to use for servername, in cert file if\n" 649 "not specified (default is " TEST_CERT2 ")", 650 .type = OPTION_ARG, 651 .opt.arg = &s_server_config.key_file2, 652 }, 653 { 654 .name = "keyform", 655 .argname = "fmt", 656 .desc = "Key format (PEM or DER) PEM default", 657 .type = OPTION_ARG_FORMAT, 658 .opt.value = &s_server_config.key_format, 659 }, 660 { 661 .name = "keymatexport", 662 .argname = "label", 663 .desc = "Export keying material using label", 664 .type = OPTION_ARG, 665 .opt.arg = &s_server_config.keymatexportlabel, 666 }, 667 { 668 .name = "keymatexportlen", 669 .argname = "len", 670 .desc = "Export len bytes of keying material (default 20)", 671 .type = OPTION_ARG_FUNC, 672 .opt.argfunc = s_server_opt_keymatexportlen, 673 }, 674 { 675 .name = "legacy_renegotiation", 676 .type = OPTION_DISCARD, 677 }, 678 { 679 .name = "msg", 680 .desc = "Show protocol messages", 681 .type = OPTION_FLAG, 682 .opt.flag = &s_server_config.msg, 683 }, 684 #ifndef OPENSSL_NO_DTLS1 685 { 686 .name = "mtu", 687 .argname = "mtu", 688 .desc = "Set link layer MTU", 689 .type = OPTION_ARG_FUNC, 690 .opt.argfunc = s_server_opt_mtu, 691 }, 692 #endif 693 { 694 .name = "named_curve", 695 .argname = "arg", 696 .type = OPTION_ARG, 697 .opt.arg = &s_server_config.named_curve, 698 }, 699 { 700 .name = "nbio", 701 .desc = "Run with non-blocking I/O", 702 .type = OPTION_FLAG, 703 .opt.flag = &s_server_config.nbio, 704 }, 705 { 706 .name = "nbio_test", 707 .desc = "Test with the non-blocking test bio", 708 .type = OPTION_FUNC, 709 .opt.func = s_server_opt_nbio_test, 710 }, 711 { 712 .name = "nextprotoneg", 713 .argname = "arg", 714 .type = OPTION_ARG, 715 .opt.arg = &s_server_config.npn_in, /* Ignored. */ 716 }, 717 { 718 .name = "no_cache", 719 .desc = "Disable session cache", 720 .type = OPTION_FLAG, 721 .opt.flag = &s_server_config.no_cache, 722 }, 723 { 724 .name = "no_comp", 725 .desc = "Disable SSL/TLS compression", 726 .type = OPTION_VALUE_OR, 727 .opt.value = &s_server_config.off, 728 .value = SSL_OP_NO_COMPRESSION, 729 }, 730 { 731 .name = "no_dhe", 732 .desc = "Disable ephemeral DH", 733 .type = OPTION_FLAG, 734 .opt.flag = &s_server_config.no_dhe, 735 }, 736 { 737 .name = "no_ecdhe", 738 .desc = "Disable ephemeral ECDH", 739 .type = OPTION_FLAG, 740 .opt.flag = &s_server_config.no_ecdhe, 741 }, 742 { 743 .name = "no_ticket", 744 .desc = "Disable use of RFC4507bis session tickets", 745 .type = OPTION_VALUE_OR, 746 .opt.value = &s_server_config.off, 747 .value = SSL_OP_NO_TICKET, 748 }, 749 { 750 .name = "no_ssl2", 751 .type = OPTION_VALUE_OR, 752 .opt.value = &s_server_config.off, 753 .value = SSL_OP_NO_SSLv2, 754 }, 755 { 756 .name = "no_ssl3", 757 .type = OPTION_VALUE_OR, 758 .opt.value = &s_server_config.off, 759 .value = SSL_OP_NO_SSLv3, 760 }, 761 { 762 .name = "no_tls1", 763 .desc = "Just disable TLSv1", 764 .type = OPTION_VALUE_OR, 765 .opt.value = &s_server_config.off, 766 .value = SSL_OP_NO_TLSv1, 767 }, 768 { 769 .name = "no_tls1_1", 770 .desc = "Just disable TLSv1.1", 771 .type = OPTION_VALUE_OR, 772 .opt.value = &s_server_config.off, 773 .value = SSL_OP_NO_TLSv1_1, 774 }, 775 { 776 .name = "no_tls1_2", 777 .desc = "Just disable TLSv1.2", 778 .type = OPTION_VALUE_OR, 779 .opt.value = &s_server_config.off, 780 .value = SSL_OP_NO_TLSv1_2, 781 }, 782 { 783 .name = "no_tls1_3", 784 .desc = "Just disable TLSv1.3", 785 .type = OPTION_VALUE_OR, 786 .opt.value = &s_server_config.off, 787 .value = SSL_OP_NO_TLSv1_3, 788 }, 789 { 790 .name = "no_tmp_rsa", 791 .type = OPTION_DISCARD, 792 }, 793 { 794 .name = "nocert", 795 .desc = "Don't use any certificates (Anon-DH)", 796 .type = OPTION_FLAG, 797 .opt.flag = &s_server_config.nocert, 798 }, 799 { 800 .name = "pass", 801 .argname = "arg", 802 .desc = "Private key file pass phrase source", 803 .type = OPTION_ARG, 804 .opt.arg = &s_server_config.passarg, 805 }, 806 { 807 .name = "port", 808 .argname = "port", 809 .type = OPTION_ARG_FUNC, 810 .opt.argfunc = s_server_opt_port, 811 }, 812 { 813 .name = "quiet", 814 .desc = "Inhibit printing of session and certificate information", 815 .type = OPTION_FLAG, 816 .opt.flag = &s_server_config.quiet, 817 }, 818 { 819 .name = "servername", 820 .argname = "name", 821 .desc = "Servername for HostName TLS extension", 822 .type = OPTION_ARG, 823 .opt.arg = &s_server_config.tlsextcbp.servername, 824 }, 825 { 826 .name = "servername_fatal", 827 .desc = "On mismatch send fatal alert (default warning alert)", 828 .type = OPTION_VALUE, 829 .opt.value = &s_server_config.tlsextcbp.extension_error, 830 .value = SSL_TLSEXT_ERR_ALERT_FATAL, 831 }, 832 { 833 .name = "serverpref", 834 .desc = "Use server's cipher preferences", 835 .type = OPTION_VALUE_OR, 836 .opt.value = &s_server_config.off, 837 .value = SSL_OP_CIPHER_SERVER_PREFERENCE, 838 }, 839 { 840 .name = "state", 841 .desc = "Print the SSL states", 842 .type = OPTION_FLAG, 843 .opt.flag = &s_server_config.state, 844 }, 845 { 846 .name = "status", 847 .desc = "Respond to certificate status requests", 848 .type = OPTION_FLAG, 849 .opt.flag = &s_server_config.tlsextstatus, 850 }, 851 { 852 .name = "status_timeout", 853 .argname = "nsec", 854 .desc = "Status request responder timeout", 855 .type = OPTION_ARG_FUNC, 856 .opt.argfunc = s_server_opt_status_timeout, 857 }, 858 { 859 .name = "status_url", 860 .argname = "url", 861 .desc = "Status request fallback URL", 862 .type = OPTION_ARG_FUNC, 863 .opt.argfunc = s_server_opt_status_url, 864 }, 865 { 866 .name = "status_verbose", 867 .desc = "Enable status request verbose printout", 868 .type = OPTION_FUNC, 869 .opt.func = s_server_opt_status_verbose, 870 }, 871 #ifndef OPENSSL_NO_DTLS1 872 { 873 .name = "timeout", 874 .desc = "Enable timeouts", 875 .type = OPTION_FLAG, 876 .opt.flag = &s_server_config.enable_timeouts, 877 }, 878 #endif 879 { 880 .name = "tls1", 881 .desc = "Just talk TLSv1", 882 .type = OPTION_FUNC, 883 .opt.func = s_server_protocol_version_tls1, 884 }, 885 { 886 .name = "tls1_1", 887 .desc = "Just talk TLSv1.1", 888 .type = OPTION_FUNC, 889 .opt.func = s_server_protocol_version_tls1_1, 890 }, 891 { 892 .name = "tls1_2", 893 .desc = "Just talk TLSv1.2", 894 .type = OPTION_FUNC, 895 .opt.func = s_server_protocol_version_tls1_2, 896 }, 897 { 898 .name = "tls1_3", 899 .desc = "Just talk TLSv1.3", 900 .type = OPTION_FUNC, 901 .opt.func = s_server_protocol_version_tls1_3, 902 }, 903 { 904 .name = "tlsextdebug", 905 .desc = "Hex dump of all TLS extensions received", 906 .type = OPTION_FLAG, 907 .opt.flag = &s_server_config.tlsextdebug, 908 }, 909 #ifndef OPENSSL_NO_SRTP 910 { 911 .name = "use_srtp", 912 .argname = "profiles", 913 .desc = "Offer SRTP key management with a colon-separated profile list", 914 .type = OPTION_ARG, 915 .opt.arg = &s_server_config.srtp_profiles, 916 }, 917 #endif 918 { 919 .name = "Verify", 920 .argname = "depth", 921 .desc = "Turn on peer certificate verification, must have a cert", 922 .type = OPTION_ARG_FUNC, 923 .opt.argfunc = s_server_opt_verify_fail, 924 }, 925 { 926 .name = "verify", 927 .argname = "depth", 928 .desc = "Turn on peer certificate verification", 929 .type = OPTION_ARG_FUNC, 930 .opt.argfunc = s_server_opt_verify, 931 }, 932 { 933 .name = "verify_return_error", 934 .desc = "Return verification error", 935 .type = OPTION_FLAG, 936 .opt.flag = &verify_return_error, 937 }, 938 { 939 .name = "WWW", 940 .desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>", 941 .type = OPTION_VALUE, 942 .opt.value = &s_server_config.www, 943 .value = 2, 944 }, 945 { 946 .name = "www", 947 .desc = "Respond to a 'GET /' with a status page", 948 .type = OPTION_VALUE, 949 .opt.value = &s_server_config.www, 950 .value = 1, 951 }, 952 { 953 .name = NULL, 954 .desc = "", 955 .type = OPTION_ARGV_FUNC, 956 .opt.argvfunc = s_server_opt_verify_param, 957 }, 958 { NULL }, 959 }; 960 961 static void 962 s_server_init(void) 963 { 964 accept_socket = -1; 965 s_server_config.cipher = NULL; 966 s_server_config.server_verify = SSL_VERIFY_NONE; 967 s_server_config.dcert_file = NULL; 968 s_server_config.dkey_file = NULL; 969 s_server_config.cert_file = TEST_CERT; 970 s_server_config.key_file = NULL; 971 s_server_config.cert_file2 = TEST_CERT2; 972 s_server_config.key_file2 = NULL; 973 ctx2 = NULL; 974 s_server_config.nbio = 0; 975 s_server_config.nbio_test = 0; 976 ctx = NULL; 977 s_server_config.www = 0; 978 979 bio_s_out = NULL; 980 s_server_config.debug = 0; 981 s_server_config.msg = 0; 982 s_server_config.quiet = 0; 983 } 984 985 static void 986 sv_usage(void) 987 { 988 fprintf(stderr, "usage: s_server " 989 "[-accept port] [-alpn protocols] [-bugs] [-CAfile file]\n" 990 " [-CApath directory] [-cert file] [-cert2 file]\n" 991 " [-certform der | pem] [-cipher cipherlist]\n" 992 " [-context id] [-crl_check] [-crl_check_all] [-crlf]\n" 993 " [-dcert file] [-dcertform der | pem] [-debug]\n" 994 " [-dhparam file] [-dkey file] [-dkeyform der | pem]\n" 995 " [-dpass arg] [-dtls1] [-groups list] [-HTTP]\n" 996 " [-id_prefix arg] [-key keyfile] [-key2 keyfile]\n" 997 " [-keyform der | pem] [-keymatexport label]\n" 998 " [-keymatexportlen len] [-msg] [-mtu mtu]\n" 999 " [-named_curve arg] [-nbio] [-nbio_test] [-no_cache]\n" 1000 " [-no_dhe] [-no_ecdhe] [-no_ticket] [-no_tls1]\n" 1001 " [-no_tls1_1] [-no_tls1_2] [-no_tls1_3] [-no_tmp_rsa]\n" 1002 " [-nocert] [-pass arg] [-quiet] [-servername name]\n" 1003 " [-servername_fatal] [-serverpref] [-state] [-status]\n" 1004 " [-status_timeout nsec] [-status_url url]\n" 1005 " [-status_verbose] [-timeout] [-tls1] [-tls1_1]\n" 1006 " [-tls1_2] [-tls1_3] [-tlsextdebug] [-use_srtp profiles]\n" 1007 " [-Verify depth] [-verify depth] [-verify_return_error]\n" 1008 " [-WWW] [-www]\n"); 1009 fprintf(stderr, "\n"); 1010 options_usage(s_server_options); 1011 fprintf(stderr, "\n"); 1012 } 1013 1014 int 1015 s_server_main(int argc, char *argv[]) 1016 { 1017 int badop = 0; 1018 int ret = 1; 1019 char *pass = NULL; 1020 char *dpass = NULL; 1021 X509 *s_cert = NULL, *s_dcert = NULL; 1022 EVP_PKEY *s_key = NULL, *s_dkey = NULL; 1023 EVP_PKEY *s_key2 = NULL; 1024 X509 *s_cert2 = NULL; 1025 tlsextalpnctx alpn_ctx = { NULL, 0 }; 1026 1027 if (single_execution) { 1028 if (pledge("stdio rpath inet dns tty", NULL) == -1) { 1029 perror("pledge"); 1030 exit(1); 1031 } 1032 } 1033 1034 memset(&s_server_config, 0, sizeof(s_server_config)); 1035 s_server_config.keymatexportlen = 20; 1036 s_server_config.meth = TLS_server_method(); 1037 s_server_config.port = PORT; 1038 s_server_config.cert_file = TEST_CERT; 1039 s_server_config.cert_file2 = TEST_CERT2; 1040 s_server_config.cert_format = FORMAT_PEM; 1041 s_server_config.dcert_format = FORMAT_PEM; 1042 s_server_config.dkey_format = FORMAT_PEM; 1043 s_server_config.key_format = FORMAT_PEM; 1044 s_server_config.server_verify = SSL_VERIFY_NONE; 1045 s_server_config.socket_type = SOCK_STREAM; 1046 s_server_config.tlscstatp.timeout = -1; 1047 s_server_config.tlsextcbp.extension_error = 1048 SSL_TLSEXT_ERR_ALERT_WARNING; 1049 1050 local_argc = argc; 1051 local_argv = argv; 1052 1053 s_server_init(); 1054 1055 verify_depth = 0; 1056 1057 if (options_parse(argc, argv, s_server_options, NULL, NULL) != 0) { 1058 badop = 1; 1059 goto bad; 1060 } 1061 if (badop) { 1062 bad: 1063 if (s_server_config.errstr == NULL) 1064 sv_usage(); 1065 goto end; 1066 } 1067 1068 if (!app_passwd(bio_err, s_server_config.passarg, 1069 s_server_config.dpassarg, &pass, &dpass)) { 1070 BIO_printf(bio_err, "Error getting password\n"); 1071 goto end; 1072 } 1073 if (s_server_config.key_file == NULL) 1074 s_server_config.key_file = s_server_config.cert_file; 1075 if (s_server_config.key_file2 == NULL) 1076 s_server_config.key_file2 = s_server_config.cert_file2; 1077 1078 if (s_server_config.nocert == 0) { 1079 s_key = load_key(bio_err, s_server_config.key_file, 1080 s_server_config.key_format, 0, pass, 1081 "server certificate private key file"); 1082 if (!s_key) { 1083 ERR_print_errors(bio_err); 1084 goto end; 1085 } 1086 s_cert = load_cert(bio_err, s_server_config.cert_file, 1087 s_server_config.cert_format, 1088 NULL, "server certificate file"); 1089 1090 if (!s_cert) { 1091 ERR_print_errors(bio_err); 1092 goto end; 1093 } 1094 if (s_server_config.tlsextcbp.servername) { 1095 s_key2 = load_key(bio_err, s_server_config.key_file2, 1096 s_server_config.key_format, 0, pass, 1097 "second server certificate private key file"); 1098 if (!s_key2) { 1099 ERR_print_errors(bio_err); 1100 goto end; 1101 } 1102 s_cert2 = load_cert(bio_err, s_server_config.cert_file2, 1103 s_server_config.cert_format, 1104 NULL, "second server certificate file"); 1105 1106 if (!s_cert2) { 1107 ERR_print_errors(bio_err); 1108 goto end; 1109 } 1110 } 1111 } 1112 alpn_ctx.data = NULL; 1113 if (s_server_config.alpn_in) { 1114 unsigned short len; 1115 alpn_ctx.data = next_protos_parse(&len, 1116 s_server_config.alpn_in); 1117 if (alpn_ctx.data == NULL) 1118 goto end; 1119 alpn_ctx.len = len; 1120 } 1121 1122 if (s_server_config.dcert_file) { 1123 1124 if (s_server_config.dkey_file == NULL) 1125 s_server_config.dkey_file = s_server_config.dcert_file; 1126 1127 s_dkey = load_key(bio_err, s_server_config.dkey_file, 1128 s_server_config.dkey_format, 1129 0, dpass, "second certificate private key file"); 1130 if (!s_dkey) { 1131 ERR_print_errors(bio_err); 1132 goto end; 1133 } 1134 s_dcert = load_cert(bio_err, s_server_config.dcert_file, 1135 s_server_config.dcert_format, 1136 NULL, "second server certificate file"); 1137 1138 if (!s_dcert) { 1139 ERR_print_errors(bio_err); 1140 goto end; 1141 } 1142 } 1143 if (bio_s_out == NULL) { 1144 if (s_server_config.quiet && !s_server_config.debug && 1145 !s_server_config.msg) { 1146 bio_s_out = BIO_new(BIO_s_null()); 1147 } else { 1148 if (bio_s_out == NULL) 1149 bio_s_out = BIO_new_fp(stdout, BIO_NOCLOSE); 1150 } 1151 } 1152 if (s_server_config.nocert) { 1153 s_server_config.cert_file = NULL; 1154 s_server_config.key_file = NULL; 1155 s_server_config.dcert_file = NULL; 1156 s_server_config.dkey_file = NULL; 1157 s_server_config.cert_file2 = NULL; 1158 s_server_config.key_file2 = NULL; 1159 } 1160 ctx = SSL_CTX_new(s_server_config.meth); 1161 if (ctx == NULL) { 1162 ERR_print_errors(bio_err); 1163 goto end; 1164 } 1165 1166 SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY); 1167 1168 if (!SSL_CTX_set_min_proto_version(ctx, s_server_config.min_version)) 1169 goto end; 1170 if (!SSL_CTX_set_max_proto_version(ctx, s_server_config.max_version)) 1171 goto end; 1172 1173 if (s_server_config.session_id_prefix) { 1174 if (strlen(s_server_config.session_id_prefix) >= 32) 1175 BIO_printf(bio_err, 1176 "warning: id_prefix is too long, only one new session will be possible\n"); 1177 else if (strlen(s_server_config.session_id_prefix) >= 16) 1178 BIO_printf(bio_err, 1179 "warning: id_prefix is too long if you use SSLv2\n"); 1180 if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) { 1181 BIO_printf(bio_err, "error setting 'id_prefix'\n"); 1182 ERR_print_errors(bio_err); 1183 goto end; 1184 } 1185 BIO_printf(bio_err, "id_prefix '%s' set.\n", 1186 s_server_config.session_id_prefix); 1187 } 1188 SSL_CTX_set_quiet_shutdown(ctx, 1); 1189 if (s_server_config.bugs) 1190 SSL_CTX_set_options(ctx, SSL_OP_ALL); 1191 SSL_CTX_set_options(ctx, s_server_config.off); 1192 /* 1193 * DTLS: partial reads end up discarding unread UDP bytes :-( Setting 1194 * read ahead solves this problem. 1195 */ 1196 if (s_server_config.socket_type == SOCK_DGRAM) 1197 SSL_CTX_set_read_ahead(ctx, 1); 1198 1199 if (s_server_config.state) 1200 SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback); 1201 if (s_server_config.no_cache) 1202 SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF); 1203 else 1204 SSL_CTX_sess_set_cache_size(ctx, 128); 1205 1206 #ifndef OPENSSL_NO_SRTP 1207 if (s_server_config.srtp_profiles != NULL) 1208 SSL_CTX_set_tlsext_use_srtp(ctx, s_server_config.srtp_profiles); 1209 #endif 1210 1211 if ((!SSL_CTX_load_verify_locations(ctx, s_server_config.CAfile, 1212 s_server_config.CApath)) || 1213 (!SSL_CTX_set_default_verify_paths(ctx))) { 1214 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */ 1215 ERR_print_errors(bio_err); 1216 /* goto end; */ 1217 } 1218 if (s_server_config.vpm) 1219 SSL_CTX_set1_param(ctx, s_server_config.vpm); 1220 1221 if (s_cert2) { 1222 ctx2 = SSL_CTX_new(s_server_config.meth); 1223 if (ctx2 == NULL) { 1224 ERR_print_errors(bio_err); 1225 goto end; 1226 } 1227 1228 if (!SSL_CTX_set_min_proto_version(ctx2, 1229 s_server_config.min_version)) 1230 goto end; 1231 if (!SSL_CTX_set_max_proto_version(ctx2, 1232 s_server_config.max_version)) 1233 goto end; 1234 SSL_CTX_clear_mode(ctx2, SSL_MODE_AUTO_RETRY); 1235 } 1236 if (ctx2) { 1237 BIO_printf(bio_s_out, "Setting secondary ctx parameters\n"); 1238 1239 if (s_server_config.session_id_prefix) { 1240 if (strlen(s_server_config.session_id_prefix) >= 32) 1241 BIO_printf(bio_err, 1242 "warning: id_prefix is too long, only one new session will be possible\n"); 1243 else if (strlen(s_server_config.session_id_prefix) >= 16) 1244 BIO_printf(bio_err, 1245 "warning: id_prefix is too long if you use SSLv2\n"); 1246 if (!SSL_CTX_set_generate_session_id(ctx2, 1247 generate_session_id)) { 1248 BIO_printf(bio_err, 1249 "error setting 'id_prefix'\n"); 1250 ERR_print_errors(bio_err); 1251 goto end; 1252 } 1253 BIO_printf(bio_err, "id_prefix '%s' set.\n", 1254 s_server_config.session_id_prefix); 1255 } 1256 SSL_CTX_set_quiet_shutdown(ctx2, 1); 1257 if (s_server_config.bugs) 1258 SSL_CTX_set_options(ctx2, SSL_OP_ALL); 1259 SSL_CTX_set_options(ctx2, s_server_config.off); 1260 /* 1261 * DTLS: partial reads end up discarding unread UDP bytes :-( 1262 * Setting read ahead solves this problem. 1263 */ 1264 if (s_server_config.socket_type == SOCK_DGRAM) 1265 SSL_CTX_set_read_ahead(ctx2, 1); 1266 1267 if (s_server_config.state) 1268 SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback); 1269 1270 if (s_server_config.no_cache) 1271 SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF); 1272 else 1273 SSL_CTX_sess_set_cache_size(ctx2, 128); 1274 1275 if ((!SSL_CTX_load_verify_locations(ctx2, 1276 s_server_config.CAfile, s_server_config.CApath)) || 1277 (!SSL_CTX_set_default_verify_paths(ctx2))) { 1278 ERR_print_errors(bio_err); 1279 } 1280 if (s_server_config.vpm) 1281 SSL_CTX_set1_param(ctx2, s_server_config.vpm); 1282 } 1283 if (alpn_ctx.data) 1284 SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx); 1285 1286 if (s_server_config.groups_in != NULL) { 1287 if (SSL_CTX_set1_groups_list(ctx, s_server_config.groups_in) != 1) { 1288 BIO_printf(bio_err, "Failed to set groups '%s'\n", 1289 s_server_config.groups_in); 1290 goto end; 1291 } 1292 } 1293 1294 #ifndef OPENSSL_NO_DH 1295 if (!s_server_config.no_dhe) { 1296 DH *dh = NULL; 1297 1298 if (s_server_config.dhfile) 1299 dh = load_dh_param(s_server_config.dhfile); 1300 else if (s_server_config.cert_file) 1301 dh = load_dh_param(s_server_config.cert_file); 1302 1303 if (dh != NULL) 1304 BIO_printf(bio_s_out, "Setting temp DH parameters\n"); 1305 else 1306 BIO_printf(bio_s_out, "Using auto DH parameters\n"); 1307 (void) BIO_flush(bio_s_out); 1308 1309 if (dh == NULL) 1310 SSL_CTX_set_dh_auto(ctx, 1); 1311 else if (!SSL_CTX_set_tmp_dh(ctx, dh)) { 1312 BIO_printf(bio_err, 1313 "Error setting temp DH parameters\n"); 1314 ERR_print_errors(bio_err); 1315 DH_free(dh); 1316 goto end; 1317 } 1318 1319 if (ctx2) { 1320 if (!s_server_config.dhfile) { 1321 DH *dh2 = NULL; 1322 1323 if (s_server_config.cert_file2 != NULL) 1324 dh2 = load_dh_param( 1325 s_server_config.cert_file2); 1326 if (dh2 != NULL) { 1327 BIO_printf(bio_s_out, 1328 "Setting temp DH parameters\n"); 1329 (void) BIO_flush(bio_s_out); 1330 1331 DH_free(dh); 1332 dh = dh2; 1333 } 1334 } 1335 if (dh == NULL) 1336 SSL_CTX_set_dh_auto(ctx2, 1); 1337 else if (!SSL_CTX_set_tmp_dh(ctx2, dh)) { 1338 BIO_printf(bio_err, 1339 "Error setting temp DH parameters\n"); 1340 ERR_print_errors(bio_err); 1341 DH_free(dh); 1342 goto end; 1343 } 1344 } 1345 DH_free(dh); 1346 } 1347 #endif 1348 1349 if (!s_server_config.no_ecdhe && s_server_config.named_curve != NULL) { 1350 EC_KEY *ecdh = NULL; 1351 int nid; 1352 1353 if ((nid = OBJ_sn2nid(s_server_config.named_curve)) == 0) { 1354 BIO_printf(bio_err, "unknown curve name (%s)\n", 1355 s_server_config.named_curve); 1356 goto end; 1357 } 1358 if ((ecdh = EC_KEY_new_by_curve_name(nid)) == NULL) { 1359 BIO_printf(bio_err, "unable to create curve (%s)\n", 1360 s_server_config.named_curve); 1361 goto end; 1362 } 1363 BIO_printf(bio_s_out, "Setting temp ECDH parameters\n"); 1364 (void) BIO_flush(bio_s_out); 1365 1366 SSL_CTX_set_tmp_ecdh(ctx, ecdh); 1367 if (ctx2) 1368 SSL_CTX_set_tmp_ecdh(ctx2, ecdh); 1369 EC_KEY_free(ecdh); 1370 } 1371 1372 if (!set_cert_key_stuff(ctx, s_cert, s_key)) 1373 goto end; 1374 if (ctx2 && !set_cert_key_stuff(ctx2, s_cert2, s_key2)) 1375 goto end; 1376 if (s_dcert != NULL) { 1377 if (!set_cert_key_stuff(ctx, s_dcert, s_dkey)) 1378 goto end; 1379 } 1380 1381 if (s_server_config.cipher != NULL) { 1382 if (!SSL_CTX_set_cipher_list(ctx, s_server_config.cipher)) { 1383 BIO_printf(bio_err, "error setting cipher list\n"); 1384 ERR_print_errors(bio_err); 1385 goto end; 1386 } 1387 if (ctx2 && !SSL_CTX_set_cipher_list(ctx2, 1388 s_server_config.cipher)) { 1389 BIO_printf(bio_err, "error setting cipher list\n"); 1390 ERR_print_errors(bio_err); 1391 goto end; 1392 } 1393 } 1394 SSL_CTX_set_verify(ctx, s_server_config.server_verify, verify_callback); 1395 SSL_CTX_set_session_id_context(ctx, 1396 (void *) &s_server_session_id_context, 1397 sizeof s_server_session_id_context); 1398 1399 /* Set DTLS cookie generation and verification callbacks */ 1400 SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback); 1401 SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback); 1402 1403 if (ctx2) { 1404 SSL_CTX_set_verify(ctx2, s_server_config.server_verify, 1405 verify_callback); 1406 SSL_CTX_set_session_id_context(ctx2, 1407 (void *) &s_server_session_id_context, 1408 sizeof s_server_session_id_context); 1409 1410 s_server_config.tlsextcbp.biodebug = bio_s_out; 1411 SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb); 1412 SSL_CTX_set_tlsext_servername_arg(ctx2, 1413 &s_server_config.tlsextcbp); 1414 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb); 1415 SSL_CTX_set_tlsext_servername_arg(ctx, 1416 &s_server_config.tlsextcbp); 1417 } 1418 1419 if (s_server_config.CAfile != NULL) { 1420 SSL_CTX_set_client_CA_list(ctx, 1421 SSL_load_client_CA_file(s_server_config.CAfile)); 1422 if (ctx2) 1423 SSL_CTX_set_client_CA_list(ctx2, 1424 SSL_load_client_CA_file(s_server_config.CAfile)); 1425 } 1426 BIO_printf(bio_s_out, "ACCEPT\n"); 1427 (void) BIO_flush(bio_s_out); 1428 if (s_server_config.www) 1429 do_server(s_server_config.port, s_server_config.socket_type, 1430 &accept_socket, www_body, s_server_config.context); 1431 else 1432 do_server(s_server_config.port, s_server_config.socket_type, 1433 &accept_socket, sv_body, s_server_config.context); 1434 print_stats(bio_s_out, ctx); 1435 ret = 0; 1436 end: 1437 SSL_CTX_free(ctx); 1438 X509_free(s_cert); 1439 X509_free(s_dcert); 1440 EVP_PKEY_free(s_key); 1441 EVP_PKEY_free(s_dkey); 1442 free(pass); 1443 free(dpass); 1444 X509_VERIFY_PARAM_free(s_server_config.vpm); 1445 free(s_server_config.tlscstatp.host); 1446 free(s_server_config.tlscstatp.port); 1447 free(s_server_config.tlscstatp.path); 1448 SSL_CTX_free(ctx2); 1449 X509_free(s_cert2); 1450 EVP_PKEY_free(s_key2); 1451 free(alpn_ctx.data); 1452 if (bio_s_out != NULL) { 1453 BIO_free(bio_s_out); 1454 bio_s_out = NULL; 1455 } 1456 1457 return (ret); 1458 } 1459 1460 static void 1461 print_stats(BIO *bio, SSL_CTX *ssl_ctx) 1462 { 1463 BIO_printf(bio, "%4ld items in the session cache\n", 1464 SSL_CTX_sess_number(ssl_ctx)); 1465 BIO_printf(bio, "%4ld client connects (SSL_connect())\n", 1466 SSL_CTX_sess_connect(ssl_ctx)); 1467 BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n", 1468 SSL_CTX_sess_connect_renegotiate(ssl_ctx)); 1469 BIO_printf(bio, "%4ld client connects that finished\n", 1470 SSL_CTX_sess_connect_good(ssl_ctx)); 1471 BIO_printf(bio, "%4ld server accepts (SSL_accept())\n", 1472 SSL_CTX_sess_accept(ssl_ctx)); 1473 BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n", 1474 SSL_CTX_sess_accept_renegotiate(ssl_ctx)); 1475 BIO_printf(bio, "%4ld server accepts that finished\n", 1476 SSL_CTX_sess_accept_good(ssl_ctx)); 1477 BIO_printf(bio, "%4ld session cache hits\n", 1478 SSL_CTX_sess_hits(ssl_ctx)); 1479 BIO_printf(bio, "%4ld session cache misses\n", 1480 SSL_CTX_sess_misses(ssl_ctx)); 1481 BIO_printf(bio, "%4ld session cache timeouts\n", 1482 SSL_CTX_sess_timeouts(ssl_ctx)); 1483 BIO_printf(bio, "%4ld callback cache hits\n", 1484 SSL_CTX_sess_cb_hits(ssl_ctx)); 1485 BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n", 1486 SSL_CTX_sess_cache_full(ssl_ctx), 1487 SSL_CTX_sess_get_cache_size(ssl_ctx)); 1488 } 1489 1490 static int 1491 sv_body(char *hostname, int s, unsigned char *context) 1492 { 1493 char *buf = NULL; 1494 int ret = 1; 1495 int k, i; 1496 unsigned long l; 1497 SSL *con = NULL; 1498 BIO *sbio; 1499 struct timeval timeout; 1500 1501 if ((buf = malloc(bufsize)) == NULL) { 1502 BIO_printf(bio_err, "out of memory\n"); 1503 goto err; 1504 } 1505 if (s_server_config.nbio) { 1506 if (!s_server_config.quiet) 1507 BIO_printf(bio_err, "turning on non blocking io\n"); 1508 if (!BIO_socket_nbio(s, 1)) 1509 ERR_print_errors(bio_err); 1510 } 1511 1512 if (con == NULL) { 1513 con = SSL_new(ctx); 1514 if (s_server_config.tlsextdebug) { 1515 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1516 SSL_set_tlsext_debug_arg(con, bio_s_out); 1517 } 1518 if (s_server_config.tlsextstatus) { 1519 SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb); 1520 s_server_config.tlscstatp.err = bio_err; 1521 SSL_CTX_set_tlsext_status_arg(ctx, 1522 &s_server_config.tlscstatp); 1523 } 1524 if (context) 1525 SSL_set_session_id_context(con, context, 1526 strlen((char *) context)); 1527 } 1528 SSL_clear(con); 1529 1530 if (SSL_version(con) == DTLS1_VERSION) { 1531 1532 sbio = BIO_new_dgram(s, BIO_NOCLOSE); 1533 1534 if (s_server_config.enable_timeouts) { 1535 timeout.tv_sec = 0; 1536 timeout.tv_usec = DGRAM_RCV_TIMEOUT; 1537 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, 1538 &timeout); 1539 1540 timeout.tv_sec = 0; 1541 timeout.tv_usec = DGRAM_SND_TIMEOUT; 1542 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, 1543 &timeout); 1544 } 1545 if (s_server_config.socket_mtu > 28) { 1546 SSL_set_options(con, SSL_OP_NO_QUERY_MTU); 1547 SSL_set_mtu(con, s_server_config.socket_mtu - 28); 1548 } else 1549 /* want to do MTU discovery */ 1550 BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); 1551 1552 /* turn on cookie exchange */ 1553 SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE); 1554 } else 1555 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1556 1557 if (s_server_config.nbio_test) { 1558 BIO *test; 1559 1560 test = BIO_new(BIO_f_nbio_test()); 1561 sbio = BIO_push(test, sbio); 1562 } 1563 1564 SSL_set_bio(con, sbio, sbio); 1565 SSL_set_accept_state(con); 1566 /* SSL_set_fd(con,s); */ 1567 1568 if (s_server_config.debug) { 1569 SSL_set_debug(con, 1); 1570 BIO_set_callback(SSL_get_rbio(con), bio_dump_callback); 1571 BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out); 1572 } 1573 if (s_server_config.msg) { 1574 SSL_set_msg_callback(con, msg_cb); 1575 SSL_set_msg_callback_arg(con, bio_s_out); 1576 } 1577 if (s_server_config.tlsextdebug) { 1578 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1579 SSL_set_tlsext_debug_arg(con, bio_s_out); 1580 } 1581 1582 for (;;) { 1583 int read_from_terminal; 1584 int read_from_sslcon; 1585 struct pollfd pfd[2]; 1586 int ptimeout; 1587 1588 read_from_terminal = 0; 1589 read_from_sslcon = SSL_pending(con); 1590 1591 if (!read_from_sslcon) { 1592 pfd[0].fd = fileno(stdin); 1593 pfd[0].events = POLLIN; 1594 pfd[1].fd = s; 1595 pfd[1].events = POLLIN; 1596 1597 if ((SSL_version(con) == DTLS1_VERSION) && 1598 DTLSv1_get_timeout(con, &timeout)) 1599 ptimeout = timeout.tv_sec * 1000 + 1600 timeout.tv_usec / 1000; 1601 else 1602 ptimeout = -1; 1603 1604 i = poll(pfd, 2, ptimeout); 1605 1606 if ((SSL_version(con) == DTLS1_VERSION) && 1607 DTLSv1_handle_timeout(con) > 0) { 1608 BIO_printf(bio_err, "TIMEOUT occured\n"); 1609 } 1610 if (i <= 0) 1611 continue; 1612 if (pfd[0].revents) { 1613 if ((pfd[0].revents & (POLLERR|POLLNVAL))) 1614 continue; 1615 read_from_terminal = 1; 1616 } 1617 if (pfd[1].revents) { 1618 if ((pfd[1].revents & (POLLERR|POLLNVAL))) 1619 continue; 1620 read_from_sslcon = 1; 1621 } 1622 } 1623 if (read_from_terminal) { 1624 if (s_server_config.crlf) { 1625 int j, lf_num; 1626 1627 i = read(fileno(stdin), buf, bufsize / 2); 1628 lf_num = 0; 1629 /* both loops are skipped when i <= 0 */ 1630 for (j = 0; j < i; j++) 1631 if (buf[j] == '\n') 1632 lf_num++; 1633 for (j = i - 1; j >= 0; j--) { 1634 buf[j + lf_num] = buf[j]; 1635 if (buf[j] == '\n') { 1636 lf_num--; 1637 i++; 1638 buf[j + lf_num] = '\r'; 1639 } 1640 } 1641 assert(lf_num == 0); 1642 } else 1643 i = read(fileno(stdin), buf, bufsize); 1644 if (!s_server_config.quiet) { 1645 if ((i <= 0) || (buf[0] == 'Q')) { 1646 BIO_printf(bio_s_out, "DONE\n"); 1647 shutdown(s, SHUT_RD); 1648 close(s); 1649 close_accept_socket(); 1650 ret = -11; 1651 goto err; 1652 } 1653 if ((i <= 0) || (buf[0] == 'q')) { 1654 BIO_printf(bio_s_out, "DONE\n"); 1655 if (SSL_version(con) != DTLS1_VERSION) { 1656 shutdown(s, SHUT_RD); 1657 close(s); 1658 } 1659 /* 1660 * close_accept_socket(); ret= -11; 1661 */ 1662 goto err; 1663 } 1664 if ((buf[0] == 'r') && 1665 ((buf[1] == '\n') || (buf[1] == '\r'))) { 1666 SSL_renegotiate(con); 1667 i = SSL_do_handshake(con); 1668 printf("SSL_do_handshake -> %d\n", i); 1669 i = 0; /* 13; */ 1670 continue; 1671 /* 1672 * RE-NEGOTIATE\n"); 1673 */ 1674 } 1675 if ((buf[0] == 'R') && 1676 ((buf[1] == '\n') || (buf[1] == '\r'))) { 1677 SSL_set_verify(con, 1678 SSL_VERIFY_PEER | 1679 SSL_VERIFY_CLIENT_ONCE, 1680 NULL); 1681 SSL_renegotiate(con); 1682 i = SSL_do_handshake(con); 1683 printf("SSL_do_handshake -> %d\n", i); 1684 i = 0; /* 13; */ 1685 continue; 1686 /* 1687 * RE-NEGOTIATE asking for client 1688 * cert\n"); 1689 */ 1690 } 1691 if (buf[0] == 'P') { 1692 static const char *str = 1693 "Lets print some clear text\n"; 1694 BIO_write(SSL_get_wbio(con), str, 1695 strlen(str)); 1696 } 1697 if (buf[0] == 'S') { 1698 print_stats(bio_s_out, 1699 SSL_get_SSL_CTX(con)); 1700 } 1701 } 1702 l = k = 0; 1703 for (;;) { 1704 /* should do a select for the write */ 1705 #ifdef RENEG 1706 { 1707 static count = 0; 1708 if (++count == 100) { 1709 count = 0; 1710 SSL_renegotiate(con); 1711 } 1712 } 1713 #endif 1714 k = SSL_write(con, &(buf[l]), (unsigned int) i); 1715 switch (SSL_get_error(con, k)) { 1716 case SSL_ERROR_NONE: 1717 break; 1718 case SSL_ERROR_WANT_WRITE: 1719 case SSL_ERROR_WANT_READ: 1720 case SSL_ERROR_WANT_X509_LOOKUP: 1721 BIO_printf(bio_s_out, "Write BLOCK\n"); 1722 break; 1723 case SSL_ERROR_SYSCALL: 1724 case SSL_ERROR_SSL: 1725 BIO_printf(bio_s_out, "ERROR\n"); 1726 ERR_print_errors(bio_err); 1727 ret = 1; 1728 goto err; 1729 /* break; */ 1730 case SSL_ERROR_ZERO_RETURN: 1731 BIO_printf(bio_s_out, "DONE\n"); 1732 ret = 1; 1733 goto err; 1734 } 1735 if (k <= 0) 1736 continue; 1737 l += k; 1738 i -= k; 1739 if (i <= 0) 1740 break; 1741 } 1742 } 1743 if (read_from_sslcon) { 1744 if (!SSL_is_init_finished(con)) { 1745 i = init_ssl_connection(con); 1746 1747 if (i < 0) { 1748 ret = 0; 1749 goto err; 1750 } else if (i == 0) { 1751 ret = 1; 1752 goto err; 1753 } 1754 } else { 1755 again: 1756 i = SSL_read(con, (char *) buf, bufsize); 1757 switch (SSL_get_error(con, i)) { 1758 case SSL_ERROR_NONE: { 1759 int len, n; 1760 for (len = 0; len < i;) { 1761 do { 1762 n = write(fileno(stdout), buf + len, i - len); 1763 } while (n == -1 && errno == EINTR); 1764 1765 if (n == -1) { 1766 BIO_printf(bio_s_out, "ERROR\n"); 1767 goto err; 1768 } 1769 len += n; 1770 } 1771 } 1772 if (SSL_pending(con)) 1773 goto again; 1774 break; 1775 case SSL_ERROR_WANT_WRITE: 1776 case SSL_ERROR_WANT_READ: 1777 BIO_printf(bio_s_out, "Read BLOCK\n"); 1778 break; 1779 case SSL_ERROR_SYSCALL: 1780 case SSL_ERROR_SSL: 1781 BIO_printf(bio_s_out, "ERROR\n"); 1782 ERR_print_errors(bio_err); 1783 ret = 1; 1784 goto err; 1785 case SSL_ERROR_ZERO_RETURN: 1786 BIO_printf(bio_s_out, "DONE\n"); 1787 ret = 1; 1788 goto err; 1789 } 1790 } 1791 } 1792 } 1793 err: 1794 if (con != NULL) { 1795 BIO_printf(bio_s_out, "shutting down SSL\n"); 1796 SSL_set_shutdown(con, 1797 SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); 1798 SSL_free(con); 1799 } 1800 BIO_printf(bio_s_out, "CONNECTION CLOSED\n"); 1801 freezero(buf, bufsize); 1802 if (ret >= 0) 1803 BIO_printf(bio_s_out, "ACCEPT\n"); 1804 return (ret); 1805 } 1806 1807 static void 1808 close_accept_socket(void) 1809 { 1810 BIO_printf(bio_err, "shutdown accept socket\n"); 1811 if (accept_socket >= 0) { 1812 shutdown(accept_socket, SHUT_RDWR); 1813 close(accept_socket); 1814 } 1815 } 1816 1817 static int 1818 init_ssl_connection(SSL *con) 1819 { 1820 int i; 1821 const char *str; 1822 X509 *peer; 1823 long verify_error; 1824 char buf[BUFSIZ]; 1825 unsigned char *exportedkeymat; 1826 1827 i = SSL_accept(con); 1828 if (i <= 0) { 1829 if (BIO_sock_should_retry(i)) { 1830 BIO_printf(bio_s_out, "DELAY\n"); 1831 return (1); 1832 } 1833 BIO_printf(bio_err, "ERROR\n"); 1834 verify_error = SSL_get_verify_result(con); 1835 if (verify_error != X509_V_OK) { 1836 BIO_printf(bio_err, "verify error:%s\n", 1837 X509_verify_cert_error_string(verify_error)); 1838 } else 1839 ERR_print_errors(bio_err); 1840 return (0); 1841 } 1842 PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con)); 1843 1844 peer = SSL_get_peer_certificate(con); 1845 if (peer != NULL) { 1846 BIO_printf(bio_s_out, "Client certificate\n"); 1847 PEM_write_bio_X509(bio_s_out, peer); 1848 X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof buf); 1849 BIO_printf(bio_s_out, "subject=%s\n", buf); 1850 X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof buf); 1851 BIO_printf(bio_s_out, "issuer=%s\n", buf); 1852 X509_free(peer); 1853 } 1854 if (SSL_get_shared_ciphers(con, buf, sizeof buf) != NULL) 1855 BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf); 1856 str = SSL_CIPHER_get_name(SSL_get_current_cipher(con)); 1857 BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)"); 1858 1859 #ifndef OPENSSL_NO_SRTP 1860 { 1861 SRTP_PROTECTION_PROFILE *srtp_profile 1862 = SSL_get_selected_srtp_profile(con); 1863 1864 if (srtp_profile) 1865 BIO_printf(bio_s_out, 1866 "SRTP Extension negotiated, profile=%s\n", 1867 srtp_profile->name); 1868 } 1869 #endif 1870 if (SSL_cache_hit(con)) 1871 BIO_printf(bio_s_out, "Reused session-id\n"); 1872 BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n", 1873 SSL_get_secure_renegotiation_support(con) ? "" : " NOT"); 1874 if (s_server_config.keymatexportlabel != NULL) { 1875 BIO_printf(bio_s_out, "Keying material exporter:\n"); 1876 BIO_printf(bio_s_out, " Label: '%s'\n", 1877 s_server_config.keymatexportlabel); 1878 BIO_printf(bio_s_out, " Length: %i bytes\n", 1879 s_server_config.keymatexportlen); 1880 exportedkeymat = malloc(s_server_config.keymatexportlen); 1881 if (exportedkeymat != NULL) { 1882 if (!SSL_export_keying_material(con, exportedkeymat, 1883 s_server_config.keymatexportlen, 1884 s_server_config.keymatexportlabel, 1885 strlen(s_server_config.keymatexportlabel), 1886 NULL, 0, 0)) { 1887 BIO_printf(bio_s_out, " Error\n"); 1888 } else { 1889 BIO_printf(bio_s_out, " Keying material: "); 1890 for (i = 0; i < s_server_config.keymatexportlen; i++) 1891 BIO_printf(bio_s_out, "%02X", 1892 exportedkeymat[i]); 1893 BIO_printf(bio_s_out, "\n"); 1894 } 1895 free(exportedkeymat); 1896 } 1897 } 1898 return (1); 1899 } 1900 1901 #ifndef OPENSSL_NO_DH 1902 static DH * 1903 load_dh_param(const char *dhfile) 1904 { 1905 DH *ret = NULL; 1906 BIO *bio; 1907 1908 if ((bio = BIO_new_file(dhfile, "r")) == NULL) 1909 goto err; 1910 ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); 1911 err: 1912 BIO_free(bio); 1913 return (ret); 1914 } 1915 #endif 1916 1917 static int 1918 www_body(char *hostname, int s, unsigned char *context) 1919 { 1920 char *buf = NULL; 1921 int ret = 1; 1922 int i, j, k, dot; 1923 SSL *con; 1924 const SSL_CIPHER *c; 1925 BIO *io, *ssl_bio, *sbio; 1926 1927 buf = malloc(bufsize); 1928 if (buf == NULL) 1929 return (0); 1930 io = BIO_new(BIO_f_buffer()); 1931 ssl_bio = BIO_new(BIO_f_ssl()); 1932 if ((io == NULL) || (ssl_bio == NULL)) 1933 goto err; 1934 1935 if (s_server_config.nbio) { 1936 if (!s_server_config.quiet) 1937 BIO_printf(bio_err, "turning on non blocking io\n"); 1938 if (!BIO_socket_nbio(s, 1)) 1939 ERR_print_errors(bio_err); 1940 } 1941 1942 /* lets make the output buffer a reasonable size */ 1943 if (!BIO_set_write_buffer_size(io, bufsize)) 1944 goto err; 1945 1946 if ((con = SSL_new(ctx)) == NULL) 1947 goto err; 1948 if (s_server_config.tlsextdebug) { 1949 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1950 SSL_set_tlsext_debug_arg(con, bio_s_out); 1951 } 1952 if (context) 1953 SSL_set_session_id_context(con, context, 1954 strlen((char *) context)); 1955 1956 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1957 if (s_server_config.nbio_test) { 1958 BIO *test; 1959 1960 test = BIO_new(BIO_f_nbio_test()); 1961 sbio = BIO_push(test, sbio); 1962 } 1963 SSL_set_bio(con, sbio, sbio); 1964 SSL_set_accept_state(con); 1965 1966 /* SSL_set_fd(con,s); */ 1967 BIO_set_ssl(ssl_bio, con, BIO_CLOSE); 1968 BIO_push(io, ssl_bio); 1969 1970 if (s_server_config.debug) { 1971 SSL_set_debug(con, 1); 1972 BIO_set_callback(SSL_get_rbio(con), bio_dump_callback); 1973 BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out); 1974 } 1975 if (s_server_config.msg) { 1976 SSL_set_msg_callback(con, msg_cb); 1977 SSL_set_msg_callback_arg(con, bio_s_out); 1978 } 1979 for (;;) { 1980 i = BIO_gets(io, buf, bufsize - 1); 1981 if (i < 0) { /* error */ 1982 if (!BIO_should_retry(io)) { 1983 if (!s_server_config.quiet) 1984 ERR_print_errors(bio_err); 1985 goto err; 1986 } else { 1987 if (s_server_config.debug) { 1988 BIO_printf(bio_s_out, "read R BLOCK\n"); 1989 sleep(1); 1990 } 1991 continue; 1992 } 1993 } else if (i == 0) { /* end of input */ 1994 ret = 1; 1995 goto end; 1996 } 1997 /* else we have data */ 1998 if (((s_server_config.www == 1) && 1999 (strncmp("GET ", buf, 4) == 0)) || 2000 ((s_server_config.www == 2) && 2001 (strncmp("GET /stats ", buf, 11) == 0))) { 2002 char *p; 2003 X509 *peer; 2004 STACK_OF(SSL_CIPHER) *sk; 2005 static const char *space = " "; 2006 2007 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); 2008 BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n"); 2009 BIO_puts(io, "<pre>\n"); 2010 /* BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/ 2011 BIO_puts(io, "\n"); 2012 for (i = 0; i < local_argc; i++) { 2013 BIO_puts(io, local_argv[i]); 2014 BIO_write(io, " ", 1); 2015 } 2016 BIO_puts(io, "\n"); 2017 2018 BIO_printf(io, 2019 "Secure Renegotiation IS%s supported\n", 2020 SSL_get_secure_renegotiation_support(con) ? 2021 "" : " NOT"); 2022 2023 /* 2024 * The following is evil and should not really be 2025 * done 2026 */ 2027 BIO_printf(io, 2028 "Ciphers supported in s_server binary\n"); 2029 sk = SSL_get_ciphers(con); 2030 j = sk_SSL_CIPHER_num(sk); 2031 for (i = 0; i < j; i++) { 2032 c = sk_SSL_CIPHER_value(sk, i); 2033 BIO_printf(io, "%-11s:%-25s", 2034 SSL_CIPHER_get_version(c), 2035 SSL_CIPHER_get_name(c)); 2036 if ((((i + 1) % 2) == 0) && (i + 1 != j)) 2037 BIO_puts(io, "\n"); 2038 } 2039 BIO_puts(io, "\n"); 2040 p = SSL_get_shared_ciphers(con, buf, bufsize); 2041 if (p != NULL) { 2042 BIO_printf(io, 2043 "---\nCiphers common between both SSL end points:\n"); 2044 j = i = 0; 2045 while (*p) { 2046 if (*p == ':') { 2047 BIO_write(io, space, 26 - j); 2048 i++; 2049 j = 0; 2050 BIO_write(io, 2051 ((i % 3) ? " " : "\n"), 1); 2052 } else { 2053 BIO_write(io, p, 1); 2054 j++; 2055 } 2056 p++; 2057 } 2058 BIO_puts(io, "\n"); 2059 } 2060 BIO_printf(io, (SSL_cache_hit(con) 2061 ? "---\nReused, " 2062 : "---\nNew, ")); 2063 c = SSL_get_current_cipher(con); 2064 BIO_printf(io, "%s, Cipher is %s\n", 2065 SSL_CIPHER_get_version(c), 2066 SSL_CIPHER_get_name(c)); 2067 SSL_SESSION_print(io, SSL_get_session(con)); 2068 BIO_printf(io, "---\n"); 2069 print_stats(io, SSL_get_SSL_CTX(con)); 2070 BIO_printf(io, "---\n"); 2071 peer = SSL_get_peer_certificate(con); 2072 if (peer != NULL) { 2073 BIO_printf(io, "Client certificate\n"); 2074 X509_print(io, peer); 2075 PEM_write_bio_X509(io, peer); 2076 } else 2077 BIO_puts(io, 2078 "no client certificate available\n"); 2079 BIO_puts(io, "</BODY></HTML>\r\n\r\n"); 2080 break; 2081 } else if ((s_server_config.www == 2 || 2082 s_server_config.www == 3) && 2083 (strncmp("GET /", buf, 5) == 0)) { 2084 BIO *file; 2085 char *p, *e; 2086 static const char *text = "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n"; 2087 2088 /* skip the '/' */ 2089 p = &(buf[5]); 2090 2091 dot = 1; 2092 for (e = p; *e != '\0'; e++) { 2093 if (e[0] == ' ') 2094 break; 2095 2096 switch (dot) { 2097 case 1: 2098 dot = (e[0] == '.') ? 2 : 0; 2099 break; 2100 case 2: 2101 dot = (e[0] == '.') ? 3 : 0; 2102 break; 2103 case 3: 2104 dot = (e[0] == '/' || e[0] == '\\') ? 2105 -1 : 0; 2106 break; 2107 } 2108 if (dot == 0) 2109 dot = (e[0] == '/' || e[0] == '\\') ? 2110 1 : 0; 2111 } 2112 dot = (dot == 3) || (dot == -1); /* filename contains 2113 * ".." component */ 2114 2115 if (*e == '\0') { 2116 BIO_puts(io, text); 2117 BIO_printf(io, 2118 "'%s' is an invalid file name\r\n", p); 2119 break; 2120 } 2121 *e = '\0'; 2122 2123 if (dot) { 2124 BIO_puts(io, text); 2125 BIO_printf(io, 2126 "'%s' contains '..' reference\r\n", p); 2127 break; 2128 } 2129 if (*p == '/') { 2130 BIO_puts(io, text); 2131 BIO_printf(io, 2132 "'%s' is an invalid path\r\n", p); 2133 break; 2134 } 2135 /* if a directory, do the index thang */ 2136 if (app_isdir(p) > 0) { 2137 BIO_puts(io, text); 2138 BIO_printf(io, "'%s' is a directory\r\n", p); 2139 break; 2140 } 2141 if ((file = BIO_new_file(p, "r")) == NULL) { 2142 BIO_puts(io, text); 2143 BIO_printf(io, "Error opening '%s'\r\n", p); 2144 ERR_print_errors(io); 2145 break; 2146 } 2147 if (!s_server_config.quiet) 2148 BIO_printf(bio_err, "FILE:%s\n", p); 2149 2150 if (s_server_config.www == 2) { 2151 i = strlen(p); 2152 if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) || 2153 ((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) || 2154 ((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0))) 2155 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); 2156 else 2157 BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n"); 2158 } 2159 /* send the file */ 2160 for (;;) { 2161 i = BIO_read(file, buf, bufsize); 2162 if (i <= 0) 2163 break; 2164 2165 #ifdef RENEG 2166 total_bytes += i; 2167 fprintf(stderr, "%d\n", i); 2168 if (total_bytes > 3 * 1024) { 2169 total_bytes = 0; 2170 fprintf(stderr, "RENEGOTIATE\n"); 2171 SSL_renegotiate(con); 2172 } 2173 #endif 2174 2175 for (j = 0; j < i;) { 2176 #ifdef RENEG 2177 { 2178 static count = 0; 2179 if (++count == 13) { 2180 SSL_renegotiate(con); 2181 } 2182 } 2183 #endif 2184 k = BIO_write(io, &(buf[j]), i - j); 2185 if (k <= 0) { 2186 if (!BIO_should_retry(io)) 2187 goto write_error; 2188 else { 2189 BIO_printf(bio_s_out, 2190 "rwrite W BLOCK\n"); 2191 } 2192 } else { 2193 j += k; 2194 } 2195 } 2196 } 2197 write_error: 2198 BIO_free(file); 2199 break; 2200 } 2201 } 2202 2203 for (;;) { 2204 i = (int) BIO_flush(io); 2205 if (i <= 0) { 2206 if (!BIO_should_retry(io)) 2207 break; 2208 } else 2209 break; 2210 } 2211 end: 2212 /* make sure we re-use sessions */ 2213 SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); 2214 2215 err: 2216 2217 if (ret >= 0) 2218 BIO_printf(bio_s_out, "ACCEPT\n"); 2219 2220 free(buf); 2221 BIO_free_all(io); 2222 /* if (ssl_bio != NULL) BIO_free(ssl_bio);*/ 2223 return (ret); 2224 } 2225 2226 #define MAX_SESSION_ID_ATTEMPTS 10 2227 static int 2228 generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len) 2229 { 2230 unsigned int count = 0; 2231 do { 2232 arc4random_buf(id, *id_len); 2233 /* 2234 * Prefix the session_id with the required prefix. NB: If our 2235 * prefix is too long, clip it - but there will be worse 2236 * effects anyway, eg. the server could only possibly create 2237 * 1 session ID (ie. the prefix!) so all future session 2238 * negotiations will fail due to conflicts. 2239 */ 2240 memcpy(id, s_server_config.session_id_prefix, 2241 (strlen(s_server_config.session_id_prefix) < *id_len) ? 2242 strlen(s_server_config.session_id_prefix) : *id_len); 2243 } 2244 while (SSL_has_matching_session_id(ssl, id, *id_len) && 2245 (++count < MAX_SESSION_ID_ATTEMPTS)); 2246 if (count >= MAX_SESSION_ID_ATTEMPTS) 2247 return 0; 2248 return 1; 2249 } 2250 2251 static int 2252 ssl_servername_cb(SSL *s, int *ad, void *arg) 2253 { 2254 tlsextctx *p = (tlsextctx *) arg; 2255 const char *servername = SSL_get_servername(s, 2256 TLSEXT_NAMETYPE_host_name); 2257 2258 if (servername && p->biodebug) 2259 BIO_printf(p->biodebug, "Hostname in TLS extension: \"%s\"\n", 2260 servername); 2261 2262 if (!p->servername) 2263 return SSL_TLSEXT_ERR_NOACK; 2264 2265 if (servername) { 2266 if (strcmp(servername, p->servername)) 2267 return p->extension_error; 2268 if (ctx2) { 2269 BIO_printf(p->biodebug, "Switching server context.\n"); 2270 SSL_set_SSL_CTX(s, ctx2); 2271 } 2272 } 2273 return SSL_TLSEXT_ERR_OK; 2274 } 2275 2276 /* Certificate Status callback. This is called when a client includes a 2277 * certificate status request extension. 2278 * 2279 * This is a simplified version. It examines certificates each time and 2280 * makes one OCSP responder query for each request. 2281 * 2282 * A full version would store details such as the OCSP certificate IDs and 2283 * minimise the number of OCSP responses by caching them until they were 2284 * considered "expired". 2285 */ 2286 2287 static int 2288 cert_status_cb(SSL *s, void *arg) 2289 { 2290 tlsextstatusctx *srctx = arg; 2291 BIO *err = srctx->err; 2292 char *host = NULL, *port = NULL, *path = NULL; 2293 int use_ssl; 2294 unsigned char *rspder = NULL; 2295 int rspderlen; 2296 STACK_OF(OPENSSL_STRING) *aia = NULL; 2297 X509 *x = NULL; 2298 X509_STORE_CTX inctx; 2299 X509_OBJECT obj; 2300 OCSP_REQUEST *req = NULL; 2301 OCSP_RESPONSE *resp = NULL; 2302 OCSP_CERTID *id = NULL; 2303 STACK_OF(X509_EXTENSION) *exts; 2304 int ret = SSL_TLSEXT_ERR_NOACK; 2305 int i; 2306 2307 if (srctx->verbose) 2308 BIO_puts(err, "cert_status: callback called\n"); 2309 /* Build up OCSP query from server certificate */ 2310 x = SSL_get_certificate(s); 2311 aia = X509_get1_ocsp(x); 2312 if (aia) { 2313 if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0), 2314 &host, &port, &path, &use_ssl)) { 2315 BIO_puts(err, "cert_status: can't parse AIA URL\n"); 2316 goto err; 2317 } 2318 if (srctx->verbose) 2319 BIO_printf(err, "cert_status: AIA URL: %s\n", 2320 sk_OPENSSL_STRING_value(aia, 0)); 2321 } else { 2322 if (!srctx->host) { 2323 BIO_puts(srctx->err, 2324 "cert_status: no AIA and no default responder URL\n"); 2325 goto done; 2326 } 2327 host = srctx->host; 2328 path = srctx->path; 2329 port = srctx->port; 2330 use_ssl = srctx->use_ssl; 2331 } 2332 2333 if (!X509_STORE_CTX_init(&inctx, 2334 SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)), 2335 NULL, NULL)) 2336 goto err; 2337 if (X509_STORE_get_by_subject(&inctx, X509_LU_X509, 2338 X509_get_issuer_name(x), &obj) <= 0) { 2339 BIO_puts(err, 2340 "cert_status: Can't retrieve issuer certificate.\n"); 2341 X509_STORE_CTX_cleanup(&inctx); 2342 goto done; 2343 } 2344 req = OCSP_REQUEST_new(); 2345 if (!req) 2346 goto err; 2347 id = OCSP_cert_to_id(NULL, x, obj.data.x509); 2348 X509_free(obj.data.x509); 2349 X509_STORE_CTX_cleanup(&inctx); 2350 if (!id) 2351 goto err; 2352 if (!OCSP_request_add0_id(req, id)) 2353 goto err; 2354 id = NULL; 2355 /* Add any extensions to the request */ 2356 SSL_get_tlsext_status_exts(s, &exts); 2357 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) { 2358 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); 2359 if (!OCSP_REQUEST_add_ext(req, ext, -1)) 2360 goto err; 2361 } 2362 resp = process_responder(err, req, host, path, port, use_ssl, NULL, 2363 srctx->timeout); 2364 if (!resp) { 2365 BIO_puts(err, "cert_status: error querying responder\n"); 2366 goto done; 2367 } 2368 rspderlen = i2d_OCSP_RESPONSE(resp, &rspder); 2369 if (rspderlen <= 0) 2370 goto err; 2371 SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen); 2372 if (srctx->verbose) { 2373 BIO_puts(err, "cert_status: ocsp response sent:\n"); 2374 OCSP_RESPONSE_print(err, resp, 2); 2375 } 2376 ret = SSL_TLSEXT_ERR_OK; 2377 done: 2378 if (ret != SSL_TLSEXT_ERR_OK) 2379 ERR_print_errors(err); 2380 if (aia) { 2381 free(host); 2382 free(path); 2383 free(port); 2384 X509_email_free(aia); 2385 } 2386 if (id) 2387 OCSP_CERTID_free(id); 2388 if (req) 2389 OCSP_REQUEST_free(req); 2390 if (resp) 2391 OCSP_RESPONSE_free(resp); 2392 return ret; 2393 err: 2394 ret = SSL_TLSEXT_ERR_ALERT_FATAL; 2395 goto done; 2396 } 2397 2398 static int 2399 alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, 2400 const unsigned char *in, unsigned int inlen, void *arg) 2401 { 2402 tlsextalpnctx *alpn_ctx = arg; 2403 2404 if (!s_server_config.quiet) { 2405 /* We can assume that in is syntactically valid. */ 2406 unsigned i; 2407 2408 BIO_printf(bio_s_out, 2409 "ALPN protocols advertised by the client: "); 2410 for (i = 0; i < inlen; ) { 2411 if (i) 2412 BIO_write(bio_s_out, ", ", 2); 2413 BIO_write(bio_s_out, &in[i + 1], in[i]); 2414 i += in[i] + 1; 2415 } 2416 BIO_write(bio_s_out, "\n", 1); 2417 } 2418 2419 if (SSL_select_next_proto((unsigned char**)out, outlen, alpn_ctx->data, 2420 alpn_ctx->len, in, inlen) != OPENSSL_NPN_NEGOTIATED) 2421 return (SSL_TLSEXT_ERR_NOACK); 2422 2423 if (!s_server_config.quiet) { 2424 BIO_printf(bio_s_out, "ALPN protocols selected: "); 2425 BIO_write(bio_s_out, *out, *outlen); 2426 BIO_write(bio_s_out, "\n", 1); 2427 } 2428 2429 return (SSL_TLSEXT_ERR_OK); 2430 } 2431