xref: /freebsd/crypto/openssl/apps/s_server.c (revision 076ad2f8)
1 /* apps/s_server.c */
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 /*
144  * Until the key-gen callbacks are modified to use newer prototypes, we allow
145  * deprecated functions for openssl-internal code
146  */
147 #ifdef OPENSSL_NO_DEPRECATED
148 # undef OPENSSL_NO_DEPRECATED
149 #endif
150 
151 #include <assert.h>
152 #include <ctype.h>
153 #include <stdio.h>
154 #include <stdlib.h>
155 #include <string.h>
156 
157 #include <openssl/e_os2.h>
158 #ifdef OPENSSL_NO_STDIO
159 # define APPS_WIN16
160 #endif
161 
162 /* conflicts with winsock2 stuff on netware */
163 #if !defined(OPENSSL_SYS_NETWARE)
164 # include <sys/types.h>
165 #endif
166 
167 /*
168  * With IPv6, it looks like Digital has mixed up the proper order of
169  * recursive header file inclusion, resulting in the compiler complaining
170  * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
171  * needed to have fileno() declared correctly...  So let's define u_int
172  */
173 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
174 # define __U_INT
175 typedef unsigned int u_int;
176 #endif
177 
178 #include <openssl/lhash.h>
179 #include <openssl/bn.h>
180 #define USE_SOCKETS
181 #include "apps.h"
182 #include <openssl/err.h>
183 #include <openssl/pem.h>
184 #include <openssl/x509.h>
185 #include <openssl/ssl.h>
186 #include <openssl/rand.h>
187 #include <openssl/ocsp.h>
188 #ifndef OPENSSL_NO_DH
189 # include <openssl/dh.h>
190 #endif
191 #ifndef OPENSSL_NO_RSA
192 # include <openssl/rsa.h>
193 #endif
194 #ifndef OPENSSL_NO_SRP
195 # include <openssl/srp.h>
196 #endif
197 #include "s_apps.h"
198 #include "timeouts.h"
199 
200 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
201 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
202 # undef FIONBIO
203 #endif
204 
205 #if defined(OPENSSL_SYS_BEOS_R5)
206 # include <fcntl.h>
207 #endif
208 
209 #ifndef OPENSSL_NO_RSA
210 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
211 #endif
212 static int sv_body(char *hostname, int s, int stype, unsigned char *context);
213 static int www_body(char *hostname, int s, int stype, unsigned char *context);
214 static int rev_body(char *hostname, int s, int stype, unsigned char *context);
215 static void close_accept_socket(void);
216 static void sv_usage(void);
217 static int init_ssl_connection(SSL *s);
218 static void print_stats(BIO *bp, SSL_CTX *ctx);
219 static int generate_session_id(const SSL *ssl, unsigned char *id,
220                                unsigned int *id_len);
221 static void init_session_cache_ctx(SSL_CTX *sctx);
222 static void free_sessions(void);
223 #ifndef OPENSSL_NO_DH
224 static DH *load_dh_param(const char *dhfile);
225 static DH *get_dh2048(void);
226 #endif
227 
228 #ifdef MONOLITH
229 static void s_server_init(void);
230 #endif
231 
232 #ifndef OPENSSL_NO_DH
233 static unsigned char dh2048_p[] = {
234     0xF6,0x42,0x57,0xB7,0x08,0x7F,0x08,0x17,0x72,0xA2,0xBA,0xD6,
235     0xA9,0x42,0xF3,0x05,0xE8,0xF9,0x53,0x11,0x39,0x4F,0xB6,0xF1,
236     0x6E,0xB9,0x4B,0x38,0x20,0xDA,0x01,0xA7,0x56,0xA3,0x14,0xE9,
237     0x8F,0x40,0x55,0xF3,0xD0,0x07,0xC6,0xCB,0x43,0xA9,0x94,0xAD,
238     0xF7,0x4C,0x64,0x86,0x49,0xF8,0x0C,0x83,0xBD,0x65,0xE9,0x17,
239     0xD4,0xA1,0xD3,0x50,0xF8,0xF5,0x59,0x5F,0xDC,0x76,0x52,0x4F,
240     0x3D,0x3D,0x8D,0xDB,0xCE,0x99,0xE1,0x57,0x92,0x59,0xCD,0xFD,
241     0xB8,0xAE,0x74,0x4F,0xC5,0xFC,0x76,0xBC,0x83,0xC5,0x47,0x30,
242     0x61,0xCE,0x7C,0xC9,0x66,0xFF,0x15,0xF9,0xBB,0xFD,0x91,0x5E,
243     0xC7,0x01,0xAA,0xD3,0x5B,0x9E,0x8D,0xA0,0xA5,0x72,0x3A,0xD4,
244     0x1A,0xF0,0xBF,0x46,0x00,0x58,0x2B,0xE5,0xF4,0x88,0xFD,0x58,
245     0x4E,0x49,0xDB,0xCD,0x20,0xB4,0x9D,0xE4,0x91,0x07,0x36,0x6B,
246     0x33,0x6C,0x38,0x0D,0x45,0x1D,0x0F,0x7C,0x88,0xB3,0x1C,0x7C,
247     0x5B,0x2D,0x8E,0xF6,0xF3,0xC9,0x23,0xC0,0x43,0xF0,0xA5,0x5B,
248     0x18,0x8D,0x8E,0xBB,0x55,0x8C,0xB8,0x5D,0x38,0xD3,0x34,0xFD,
249     0x7C,0x17,0x57,0x43,0xA3,0x1D,0x18,0x6C,0xDE,0x33,0x21,0x2C,
250     0xB5,0x2A,0xFF,0x3C,0xE1,0xB1,0x29,0x40,0x18,0x11,0x8D,0x7C,
251     0x84,0xA7,0x0A,0x72,0xD6,0x86,0xC4,0x03,0x19,0xC8,0x07,0x29,
252     0x7A,0xCA,0x95,0x0C,0xD9,0x96,0x9F,0xAB,0xD0,0x0A,0x50,0x9B,
253     0x02,0x46,0xD3,0x08,0x3D,0x66,0xA4,0x5D,0x41,0x9F,0x9C,0x7C,
254     0xBD,0x89,0x4B,0x22,0x19,0x26,0xBA,0xAB,0xA2,0x5E,0xC3,0x55,
255     0xE9,0x32,0x0B,0x3B,
256 };
257 
258 static unsigned char dh2048_g[] = {
259     0x02,
260 };
261 
262 DH *get_dh2048()
263 {
264     DH *dh;
265 
266     if ((dh = DH_new()) == NULL)
267         return NULL;
268     dh->p=BN_bin2bn(dh2048_p, sizeof(dh2048_p), NULL);
269     dh->g=BN_bin2bn(dh2048_g, sizeof(dh2048_g), NULL);
270     if (dh->p == NULL || dh->g == NULL) {
271         DH_free(dh);
272         return NULL;
273     }
274     return dh;
275 }
276 #endif
277 
278 /* static int load_CA(SSL_CTX *ctx, char *file);*/
279 
280 #undef BUFSIZZ
281 #define BUFSIZZ 16*1024
282 static int bufsize = BUFSIZZ;
283 static int accept_socket = -1;
284 
285 #define TEST_CERT       "server.pem"
286 #ifndef OPENSSL_NO_TLSEXT
287 # define TEST_CERT2      "server2.pem"
288 #endif
289 #undef PROG
290 #define PROG            s_server_main
291 
292 extern int verify_depth, verify_return_error, verify_quiet;
293 
294 static int s_server_verify = SSL_VERIFY_NONE;
295 static int s_server_session_id_context = 1; /* anything will do */
296 static const char *s_cert_file = TEST_CERT, *s_key_file =
297     NULL, *s_chain_file = NULL;
298 #ifndef OPENSSL_NO_TLSEXT
299 static const char *s_cert_file2 = TEST_CERT2, *s_key_file2 = NULL;
300 #endif
301 static char *s_dcert_file = NULL, *s_dkey_file = NULL, *s_dchain_file = NULL;
302 #ifdef FIONBIO
303 static int s_nbio = 0;
304 #endif
305 static int s_nbio_test = 0;
306 int s_crlf = 0;
307 static SSL_CTX *ctx = NULL;
308 #ifndef OPENSSL_NO_TLSEXT
309 static SSL_CTX *ctx2 = NULL;
310 #endif
311 static int www = 0;
312 
313 static BIO *bio_s_out = NULL;
314 static BIO *bio_s_msg = NULL;
315 static int s_debug = 0;
316 #ifndef OPENSSL_NO_TLSEXT
317 static int s_tlsextdebug = 0;
318 static int s_tlsextstatus = 0;
319 static int cert_status_cb(SSL *s, void *arg);
320 #endif
321 static int no_resume_ephemeral = 0;
322 static int s_msg = 0;
323 static int s_quiet = 0;
324 static int s_ign_eof = 0;
325 static int s_brief = 0;
326 
327 static char *keymatexportlabel = NULL;
328 static int keymatexportlen = 20;
329 
330 static int hack = 0;
331 static char *engine_id = NULL;
332 static const char *session_id_prefix = NULL;
333 
334 static int enable_timeouts = 0;
335 static long socket_mtu;
336 #ifndef OPENSSL_NO_DTLS1
337 static int cert_chain = 0;
338 #endif
339 
340 #ifndef OPENSSL_NO_TLSEXT
341 static BIO *serverinfo_in = NULL;
342 static const char *s_serverinfo_file = NULL;
343 
344 #endif
345 
346 #ifndef OPENSSL_NO_PSK
347 static char *psk_identity = "Client_identity";
348 char *psk_key = NULL;           /* by default PSK is not used */
349 
350 static unsigned int psk_server_cb(SSL *ssl, const char *identity,
351                                   unsigned char *psk,
352                                   unsigned int max_psk_len)
353 {
354     long key_len = 0;
355     unsigned char *key;
356 
357     if (s_debug)
358         BIO_printf(bio_s_out, "psk_server_cb\n");
359     if (!identity) {
360         BIO_printf(bio_err, "Error: client did not send PSK identity\n");
361         goto out_err;
362     }
363     if (s_debug)
364         BIO_printf(bio_s_out, "identity_len=%d identity=%s\n",
365                    (int)strlen(identity), identity);
366 
367     /* here we could lookup the given identity e.g. from a database */
368     if (strcmp(identity, psk_identity) != 0) {
369         BIO_printf(bio_s_out, "PSK error: client identity not found"
370                    " (got '%s' expected '%s')\n", identity, psk_identity);
371         goto out_err;
372     }
373     if (s_debug)
374         BIO_printf(bio_s_out, "PSK client identity found\n");
375 
376     /* convert the PSK key to binary */
377     key = string_to_hex(psk_key, &key_len);
378     if (key == NULL) {
379         BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
380                    psk_key);
381         return 0;
382     }
383     if (key_len > (int)max_psk_len) {
384         BIO_printf(bio_err,
385                    "psk buffer of callback is too small (%d) for key (%ld)\n",
386                    max_psk_len, key_len);
387         OPENSSL_free(key);
388         return 0;
389     }
390 
391     memcpy(psk, key, key_len);
392     OPENSSL_free(key);
393 
394     if (s_debug)
395         BIO_printf(bio_s_out, "fetched PSK len=%ld\n", key_len);
396     return key_len;
397  out_err:
398     if (s_debug)
399         BIO_printf(bio_err, "Error in PSK server callback\n");
400     return 0;
401 }
402 #endif
403 
404 #ifndef OPENSSL_NO_SRP
405 /* This is a context that we pass to callbacks */
406 typedef struct srpsrvparm_st {
407     char *login;
408     SRP_VBASE *vb;
409     SRP_user_pwd *user;
410 } srpsrvparm;
411 
412 /*
413  * This callback pretends to require some asynchronous logic in order to
414  * obtain a verifier. When the callback is called for a new connection we
415  * return with a negative value. This will provoke the accept etc to return
416  * with an LOOKUP_X509. The main logic of the reinvokes the suspended call
417  * (which would normally occur after a worker has finished) and we set the
418  * user parameters.
419  */
420 static int MS_CALLBACK ssl_srp_server_param_cb(SSL *s, int *ad, void *arg)
421 {
422     srpsrvparm *p = (srpsrvparm *) arg;
423     int ret = SSL3_AL_FATAL;
424 
425     if (p->login == NULL && p->user == NULL) {
426         p->login = SSL_get_srp_username(s);
427         BIO_printf(bio_err, "SRP username = \"%s\"\n", p->login);
428         return (-1);
429     }
430 
431     if (p->user == NULL) {
432         BIO_printf(bio_err, "User %s doesn't exist\n", p->login);
433         goto err;
434     }
435 
436     if (SSL_set_srp_server_param
437         (s, p->user->N, p->user->g, p->user->s, p->user->v,
438          p->user->info) < 0) {
439         *ad = SSL_AD_INTERNAL_ERROR;
440         goto err;
441     }
442     BIO_printf(bio_err,
443                "SRP parameters set: username = \"%s\" info=\"%s\" \n",
444                p->login, p->user->info);
445     ret = SSL_ERROR_NONE;
446 
447 err:
448     SRP_user_pwd_free(p->user);
449     p->user = NULL;
450     p->login = NULL;
451     return ret;
452 }
453 
454 #endif
455 
456 #ifdef MONOLITH
457 static void s_server_init(void)
458 {
459     accept_socket = -1;
460     s_server_verify = SSL_VERIFY_NONE;
461     s_dcert_file = NULL;
462     s_dkey_file = NULL;
463     s_dchain_file = NULL;
464     s_cert_file = TEST_CERT;
465     s_key_file = NULL;
466     s_chain_file = NULL;
467 # ifndef OPENSSL_NO_TLSEXT
468     s_cert_file2 = TEST_CERT2;
469     s_key_file2 = NULL;
470     ctx2 = NULL;
471 # endif
472 # ifdef FIONBIO
473     s_nbio = 0;
474 # endif
475     s_nbio_test = 0;
476     ctx = NULL;
477     www = 0;
478 
479     bio_s_out = NULL;
480     s_debug = 0;
481     s_msg = 0;
482     s_quiet = 0;
483     s_brief = 0;
484     hack = 0;
485     engine_id = NULL;
486 }
487 #endif
488 
489 static void sv_usage(void)
490 {
491     BIO_printf(bio_err, "usage: s_server [args ...]\n");
492     BIO_printf(bio_err, "\n");
493     BIO_printf(bio_err,
494                " -accept arg   - port to accept on (default is %d)\n", PORT);
495     BIO_printf(bio_err,
496                " -verify_hostname host - check peer certificate matches \"host\"\n");
497     BIO_printf(bio_err,
498                " -verify_email email - check peer certificate matches \"email\"\n");
499     BIO_printf(bio_err,
500                " -verify_ip ipaddr - check peer certificate matches \"ipaddr\"\n");
501     BIO_printf(bio_err, " -context arg  - set session ID context\n");
502     BIO_printf(bio_err,
503                " -verify arg   - turn on peer certificate verification\n");
504     BIO_printf(bio_err,
505                " -Verify arg   - turn on peer certificate verification, must have a cert.\n");
506     BIO_printf(bio_err,
507                " -verify_return_error - return verification errors\n");
508     BIO_printf(bio_err, " -cert arg     - certificate file to use\n");
509     BIO_printf(bio_err, "                 (default is %s)\n", TEST_CERT);
510 #ifndef OPENSSL_NO_TLSEXT
511     BIO_printf(bio_err,
512                " -serverinfo arg - PEM serverinfo file for certificate\n");
513     BIO_printf(bio_err,
514                " -auth               - send and receive RFC 5878 TLS auth extensions and supplemental data\n");
515     BIO_printf(bio_err,
516                " -auth_require_reneg - Do not send TLS auth extensions until renegotiation\n");
517 #endif
518     BIO_printf(bio_err,
519                " -no_resumption_on_reneg - set SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION flag\n");
520     BIO_printf(bio_err,
521                " -crl_check    - check the peer certificate has not been revoked by its CA.\n"
522                "                 The CRL(s) are appended to the certificate file\n");
523     BIO_printf(bio_err,
524                " -crl_check_all - check the peer certificate has not been revoked by its CA\n"
525                "                 or any other CRL in the CA chain. CRL(s) are appened to the\n"
526                "                 the certificate file.\n");
527     BIO_printf(bio_err,
528                " -certform arg - certificate format (PEM or DER) PEM default\n");
529     BIO_printf(bio_err,
530                " -key arg      - Private Key file to use, in cert file if\n");
531     BIO_printf(bio_err, "                 not specified (default is %s)\n",
532                TEST_CERT);
533     BIO_printf(bio_err,
534                " -keyform arg  - key format (PEM, DER or ENGINE) PEM default\n");
535     BIO_printf(bio_err,
536                " -pass arg     - private key file pass phrase source\n");
537     BIO_printf(bio_err,
538                " -dcert arg    - second certificate file to use (usually for DSA)\n");
539     BIO_printf(bio_err,
540                " -dcertform x  - second certificate format (PEM or DER) PEM default\n");
541     BIO_printf(bio_err,
542                " -dkey arg     - second private key file to use (usually for DSA)\n");
543     BIO_printf(bio_err,
544                " -dkeyform arg - second key format (PEM, DER or ENGINE) PEM default\n");
545     BIO_printf(bio_err,
546                " -dpass arg    - second private key file pass phrase source\n");
547     BIO_printf(bio_err,
548                " -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
549     BIO_printf(bio_err,
550                "                 or a default set of parameters is used\n");
551 #ifndef OPENSSL_NO_ECDH
552     BIO_printf(bio_err,
553                " -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n"
554                "                 Use \"openssl ecparam -list_curves\" for all names\n"
555                "                 (default is nistp256).\n");
556 #endif
557 #ifdef FIONBIO
558     BIO_printf(bio_err, " -nbio         - Run with non-blocking IO\n");
559 #endif
560     BIO_printf(bio_err,
561                " -nbio_test    - test with the non-blocking test bio\n");
562     BIO_printf(bio_err,
563                " -crlf         - convert LF from terminal into CRLF\n");
564     BIO_printf(bio_err, " -debug        - Print more output\n");
565     BIO_printf(bio_err, " -msg          - Show protocol messages\n");
566     BIO_printf(bio_err, " -state        - Print the SSL states\n");
567     BIO_printf(bio_err, " -CApath arg   - PEM format directory of CA's\n");
568     BIO_printf(bio_err, " -CAfile arg   - PEM format file of CA's\n");
569     BIO_printf(bio_err,
570                " -no_alt_chains - only ever use the first certificate chain found\n");
571     BIO_printf(bio_err,
572                " -nocert       - Don't use any certificates (Anon-DH)\n");
573     BIO_printf(bio_err,
574                " -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
575     BIO_printf(bio_err, " -serverpref   - Use server's cipher preferences\n");
576     BIO_printf(bio_err, " -quiet        - No server output\n");
577     BIO_printf(bio_err, " -no_tmp_rsa   - Do not generate a tmp RSA key\n");
578 #ifndef OPENSSL_NO_PSK
579     BIO_printf(bio_err, " -psk_hint arg - PSK identity hint to use\n");
580     BIO_printf(bio_err, " -psk arg      - PSK in hex (without 0x)\n");
581 # ifndef OPENSSL_NO_JPAKE
582     BIO_printf(bio_err, " -jpake arg    - JPAKE secret to use\n");
583 # endif
584 #endif
585 #ifndef OPENSSL_NO_SRP
586     BIO_printf(bio_err, " -srpvfile file      - The verifier file for SRP\n");
587     BIO_printf(bio_err,
588                " -srpuserseed string - A seed string for a default user salt.\n");
589 #endif
590     BIO_printf(bio_err, " -ssl2         - Just talk SSLv2\n");
591 #ifndef OPENSSL_NO_SSL3_METHOD
592     BIO_printf(bio_err, " -ssl3         - Just talk SSLv3\n");
593 #endif
594     BIO_printf(bio_err, " -tls1_2       - Just talk TLSv1.2\n");
595     BIO_printf(bio_err, " -tls1_1       - Just talk TLSv1.1\n");
596     BIO_printf(bio_err, " -tls1         - Just talk TLSv1\n");
597     BIO_printf(bio_err, " -dtls1        - Just talk DTLSv1\n");
598     BIO_printf(bio_err, " -dtls1_2      - Just talk DTLSv1.2\n");
599     BIO_printf(bio_err, " -timeout      - Enable timeouts\n");
600     BIO_printf(bio_err, " -mtu          - Set link layer MTU\n");
601     BIO_printf(bio_err, " -chain        - Read a certificate chain\n");
602     BIO_printf(bio_err, " -no_ssl2      - Just disable SSLv2\n");
603     BIO_printf(bio_err, " -no_ssl3      - Just disable SSLv3\n");
604     BIO_printf(bio_err, " -no_tls1      - Just disable TLSv1\n");
605     BIO_printf(bio_err, " -no_tls1_1    - Just disable TLSv1.1\n");
606     BIO_printf(bio_err, " -no_tls1_2    - Just disable TLSv1.2\n");
607 #ifndef OPENSSL_NO_DH
608     BIO_printf(bio_err, " -no_dhe       - Disable ephemeral DH\n");
609 #endif
610 #ifndef OPENSSL_NO_ECDH
611     BIO_printf(bio_err, " -no_ecdhe     - Disable ephemeral ECDH\n");
612 #endif
613     BIO_printf(bio_err, " -bugs         - Turn on SSL bug compatibility\n");
614     BIO_printf(bio_err,
615                " -hack         - workaround for early Netscape code\n");
616     BIO_printf(bio_err,
617                " -www          - Respond to a 'GET /' with a status page\n");
618     BIO_printf(bio_err,
619                " -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
620     BIO_printf(bio_err,
621                " -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
622     BIO_printf(bio_err,
623                "                 with the assumption it contains a complete HTTP response.\n");
624 #ifndef OPENSSL_NO_ENGINE
625     BIO_printf(bio_err,
626                " -engine id    - Initialise and use the specified engine\n");
627 #endif
628     BIO_printf(bio_err,
629                " -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
630     BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
631                LIST_SEPARATOR_CHAR);
632 #ifndef OPENSSL_NO_TLSEXT
633     BIO_printf(bio_err,
634                " -servername host - servername for HostName TLS extension\n");
635     BIO_printf(bio_err,
636                " -servername_fatal - on mismatch send fatal alert (default warning alert)\n");
637     BIO_printf(bio_err,
638                " -cert2 arg    - certificate file to use for servername\n");
639     BIO_printf(bio_err, "                 (default is %s)\n", TEST_CERT2);
640     BIO_printf(bio_err,
641                " -key2 arg     - Private Key file to use for servername, in cert file if\n");
642     BIO_printf(bio_err, "                 not specified (default is %s)\n",
643                TEST_CERT2);
644     BIO_printf(bio_err,
645                " -tlsextdebug  - hex dump of all TLS extensions received\n");
646     BIO_printf(bio_err,
647                " -no_ticket    - disable use of RFC4507bis session tickets\n");
648     BIO_printf(bio_err,
649                " -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
650     BIO_printf(bio_err,
651                " -sigalgs arg      - Signature algorithms to support (colon-separated list)\n");
652     BIO_printf(bio_err,
653                " -client_sigalgs arg  - Signature algorithms to support for client \n");
654     BIO_printf(bio_err,
655                "                        certificate authentication (colon-separated list)\n");
656 # ifndef OPENSSL_NO_NEXTPROTONEG
657     BIO_printf(bio_err,
658                " -nextprotoneg arg - set the advertised protocols for the NPN extension (comma-separated list)\n");
659 # endif
660 # ifndef OPENSSL_NO_SRTP
661     BIO_printf(bio_err,
662                " -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
663 # endif
664     BIO_printf(bio_err,
665                " -alpn arg  - set the advertised protocols for the ALPN extension (comma-separated list)\n");
666 #endif
667     BIO_printf(bio_err,
668                " -keymatexport label   - Export keying material using label\n");
669     BIO_printf(bio_err,
670                " -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
671     BIO_printf(bio_err,
672                " -status           - respond to certificate status requests\n");
673     BIO_printf(bio_err,
674                " -status_verbose   - enable status request verbose printout\n");
675     BIO_printf(bio_err,
676                " -status_timeout n - status request responder timeout\n");
677     BIO_printf(bio_err, " -status_url URL   - status request fallback URL\n");
678 }
679 
680 static int local_argc = 0;
681 static char **local_argv;
682 
683 #ifdef CHARSET_EBCDIC
684 static int ebcdic_new(BIO *bi);
685 static int ebcdic_free(BIO *a);
686 static int ebcdic_read(BIO *b, char *out, int outl);
687 static int ebcdic_write(BIO *b, const char *in, int inl);
688 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
689 static int ebcdic_gets(BIO *bp, char *buf, int size);
690 static int ebcdic_puts(BIO *bp, const char *str);
691 
692 # define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
693 static BIO_METHOD methods_ebcdic = {
694     BIO_TYPE_EBCDIC_FILTER,
695     "EBCDIC/ASCII filter",
696     ebcdic_write,
697     ebcdic_read,
698     ebcdic_puts,
699     ebcdic_gets,
700     ebcdic_ctrl,
701     ebcdic_new,
702     ebcdic_free,
703 };
704 
705 typedef struct {
706     size_t alloced;
707     char buff[1];
708 } EBCDIC_OUTBUFF;
709 
710 BIO_METHOD *BIO_f_ebcdic_filter()
711 {
712     return (&methods_ebcdic);
713 }
714 
715 static int ebcdic_new(BIO *bi)
716 {
717     EBCDIC_OUTBUFF *wbuf;
718 
719     wbuf = (EBCDIC_OUTBUFF *) OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
720     if (!wbuf)
721         return 0;
722     wbuf->alloced = 1024;
723     wbuf->buff[0] = '\0';
724 
725     bi->ptr = (char *)wbuf;
726     bi->init = 1;
727     bi->flags = 0;
728     return (1);
729 }
730 
731 static int ebcdic_free(BIO *a)
732 {
733     if (a == NULL)
734         return (0);
735     if (a->ptr != NULL)
736         OPENSSL_free(a->ptr);
737     a->ptr = NULL;
738     a->init = 0;
739     a->flags = 0;
740     return (1);
741 }
742 
743 static int ebcdic_read(BIO *b, char *out, int outl)
744 {
745     int ret = 0;
746 
747     if (out == NULL || outl == 0)
748         return (0);
749     if (b->next_bio == NULL)
750         return (0);
751 
752     ret = BIO_read(b->next_bio, out, outl);
753     if (ret > 0)
754         ascii2ebcdic(out, out, ret);
755     return (ret);
756 }
757 
758 static int ebcdic_write(BIO *b, const char *in, int inl)
759 {
760     EBCDIC_OUTBUFF *wbuf;
761     int ret = 0;
762     int num;
763     unsigned char n;
764 
765     if ((in == NULL) || (inl <= 0))
766         return (0);
767     if (b->next_bio == NULL)
768         return (0);
769 
770     wbuf = (EBCDIC_OUTBUFF *) b->ptr;
771 
772     if (inl > (num = wbuf->alloced)) {
773         num = num + num;        /* double the size */
774         if (num < inl)
775             num = inl;
776         wbuf =
777             (EBCDIC_OUTBUFF *) OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
778         if (!wbuf)
779             return 0;
780         OPENSSL_free(b->ptr);
781 
782         wbuf->alloced = num;
783         wbuf->buff[0] = '\0';
784 
785         b->ptr = (char *)wbuf;
786     }
787 
788     ebcdic2ascii(wbuf->buff, in, inl);
789 
790     ret = BIO_write(b->next_bio, wbuf->buff, inl);
791 
792     return (ret);
793 }
794 
795 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
796 {
797     long ret;
798 
799     if (b->next_bio == NULL)
800         return (0);
801     switch (cmd) {
802     case BIO_CTRL_DUP:
803         ret = 0L;
804         break;
805     default:
806         ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
807         break;
808     }
809     return (ret);
810 }
811 
812 static int ebcdic_gets(BIO *bp, char *buf, int size)
813 {
814     int i, ret = 0;
815     if (bp->next_bio == NULL)
816         return (0);
817 /*      return(BIO_gets(bp->next_bio,buf,size));*/
818     for (i = 0; i < size - 1; ++i) {
819         ret = ebcdic_read(bp, &buf[i], 1);
820         if (ret <= 0)
821             break;
822         else if (buf[i] == '\n') {
823             ++i;
824             break;
825         }
826     }
827     if (i < size)
828         buf[i] = '\0';
829     return (ret < 0 && i == 0) ? ret : i;
830 }
831 
832 static int ebcdic_puts(BIO *bp, const char *str)
833 {
834     if (bp->next_bio == NULL)
835         return (0);
836     return ebcdic_write(bp, str, strlen(str));
837 }
838 #endif
839 
840 #ifndef OPENSSL_NO_TLSEXT
841 
842 /* This is a context that we pass to callbacks */
843 typedef struct tlsextctx_st {
844     char *servername;
845     BIO *biodebug;
846     int extension_error;
847 } tlsextctx;
848 
849 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
850 {
851     tlsextctx *p = (tlsextctx *) arg;
852     const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
853     if (servername && p->biodebug)
854         BIO_printf(p->biodebug, "Hostname in TLS extension: \"%s\"\n",
855                    servername);
856 
857     if (!p->servername)
858         return SSL_TLSEXT_ERR_NOACK;
859 
860     if (servername) {
861         if (strcasecmp(servername, p->servername))
862             return p->extension_error;
863         if (ctx2) {
864             BIO_printf(p->biodebug, "Switching server context.\n");
865             SSL_set_SSL_CTX(s, ctx2);
866         }
867     }
868     return SSL_TLSEXT_ERR_OK;
869 }
870 
871 /* Structure passed to cert status callback */
872 
873 typedef struct tlsextstatusctx_st {
874     /* Default responder to use */
875     char *host, *path, *port;
876     int use_ssl;
877     int timeout;
878     BIO *err;
879     int verbose;
880 } tlsextstatusctx;
881 
882 static tlsextstatusctx tlscstatp = { NULL, NULL, NULL, 0, -1, NULL, 0 };
883 
884 /*
885  * Certificate Status callback. This is called when a client includes a
886  * certificate status request extension. This is a simplified version. It
887  * examines certificates each time and makes one OCSP responder query for
888  * each request. A full version would store details such as the OCSP
889  * certificate IDs and minimise the number of OCSP responses by caching them
890  * until they were considered "expired".
891  */
892 
893 static int cert_status_cb(SSL *s, void *arg)
894 {
895     tlsextstatusctx *srctx = arg;
896     BIO *err = srctx->err;
897     char *host, *port, *path;
898     int use_ssl;
899     unsigned char *rspder = NULL;
900     int rspderlen;
901     STACK_OF(OPENSSL_STRING) *aia = NULL;
902     X509 *x = NULL;
903     X509_STORE_CTX inctx;
904     X509_OBJECT obj;
905     OCSP_REQUEST *req = NULL;
906     OCSP_RESPONSE *resp = NULL;
907     OCSP_CERTID *id = NULL;
908     STACK_OF(X509_EXTENSION) *exts;
909     int ret = SSL_TLSEXT_ERR_NOACK;
910     int i;
911 # if 0
912     STACK_OF(OCSP_RESPID) *ids;
913     SSL_get_tlsext_status_ids(s, &ids);
914     BIO_printf(err, "cert_status: received %d ids\n",
915                sk_OCSP_RESPID_num(ids));
916 # endif
917     if (srctx->verbose)
918         BIO_puts(err, "cert_status: callback called\n");
919     /* Build up OCSP query from server certificate */
920     x = SSL_get_certificate(s);
921     aia = X509_get1_ocsp(x);
922     if (aia) {
923         if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0),
924                             &host, &port, &path, &use_ssl)) {
925             BIO_puts(err, "cert_status: can't parse AIA URL\n");
926             goto err;
927         }
928         if (srctx->verbose)
929             BIO_printf(err, "cert_status: AIA URL: %s\n",
930                        sk_OPENSSL_STRING_value(aia, 0));
931     } else {
932         if (!srctx->host) {
933             BIO_puts(srctx->err,
934                      "cert_status: no AIA and no default responder URL\n");
935             goto done;
936         }
937         host = srctx->host;
938         path = srctx->path;
939         port = srctx->port;
940         use_ssl = srctx->use_ssl;
941     }
942 
943     if (!X509_STORE_CTX_init(&inctx,
944                              SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
945                              NULL, NULL))
946         goto err;
947     if (X509_STORE_get_by_subject(&inctx, X509_LU_X509,
948                                   X509_get_issuer_name(x), &obj) <= 0) {
949         BIO_puts(err, "cert_status: Can't retrieve issuer certificate.\n");
950         X509_STORE_CTX_cleanup(&inctx);
951         goto done;
952     }
953     req = OCSP_REQUEST_new();
954     if (!req)
955         goto err;
956     id = OCSP_cert_to_id(NULL, x, obj.data.x509);
957     X509_free(obj.data.x509);
958     X509_STORE_CTX_cleanup(&inctx);
959     if (!id)
960         goto err;
961     if (!OCSP_request_add0_id(req, id))
962         goto err;
963     id = NULL;
964     /* Add any extensions to the request */
965     SSL_get_tlsext_status_exts(s, &exts);
966     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
967         X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
968         if (!OCSP_REQUEST_add_ext(req, ext, -1))
969             goto err;
970     }
971     resp = process_responder(err, req, host, path, port, use_ssl, NULL,
972                              srctx->timeout);
973     if (!resp) {
974         BIO_puts(err, "cert_status: error querying responder\n");
975         goto done;
976     }
977     rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
978     if (rspderlen <= 0)
979         goto err;
980     SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
981     if (srctx->verbose) {
982         BIO_puts(err, "cert_status: ocsp response sent:\n");
983         OCSP_RESPONSE_print(err, resp, 2);
984     }
985     ret = SSL_TLSEXT_ERR_OK;
986  done:
987     if (ret != SSL_TLSEXT_ERR_OK)
988         ERR_print_errors(err);
989     if (aia) {
990         OPENSSL_free(host);
991         OPENSSL_free(path);
992         OPENSSL_free(port);
993         X509_email_free(aia);
994     }
995     if (id)
996         OCSP_CERTID_free(id);
997     if (req)
998         OCSP_REQUEST_free(req);
999     if (resp)
1000         OCSP_RESPONSE_free(resp);
1001     return ret;
1002  err:
1003     ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1004     goto done;
1005 }
1006 
1007 # ifndef OPENSSL_NO_NEXTPROTONEG
1008 /* This is the context that we pass to next_proto_cb */
1009 typedef struct tlsextnextprotoctx_st {
1010     unsigned char *data;
1011     unsigned int len;
1012 } tlsextnextprotoctx;
1013 
1014 static int next_proto_cb(SSL *s, const unsigned char **data,
1015                          unsigned int *len, void *arg)
1016 {
1017     tlsextnextprotoctx *next_proto = arg;
1018 
1019     *data = next_proto->data;
1020     *len = next_proto->len;
1021 
1022     return SSL_TLSEXT_ERR_OK;
1023 }
1024 # endif                         /* ndef OPENSSL_NO_NEXTPROTONEG */
1025 
1026 /* This the context that we pass to alpn_cb */
1027 typedef struct tlsextalpnctx_st {
1028     unsigned char *data;
1029     unsigned short len;
1030 } tlsextalpnctx;
1031 
1032 static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen,
1033                    const unsigned char *in, unsigned int inlen, void *arg)
1034 {
1035     tlsextalpnctx *alpn_ctx = arg;
1036 
1037     if (!s_quiet) {
1038         /* We can assume that |in| is syntactically valid. */
1039         unsigned i;
1040         BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
1041         for (i = 0; i < inlen;) {
1042             if (i)
1043                 BIO_write(bio_s_out, ", ", 2);
1044             BIO_write(bio_s_out, &in[i + 1], in[i]);
1045             i += in[i] + 1;
1046         }
1047         BIO_write(bio_s_out, "\n", 1);
1048     }
1049 
1050     if (SSL_select_next_proto
1051         ((unsigned char **)out, outlen, alpn_ctx->data, alpn_ctx->len, in,
1052          inlen) != OPENSSL_NPN_NEGOTIATED) {
1053         return SSL_TLSEXT_ERR_NOACK;
1054     }
1055 
1056     if (!s_quiet) {
1057         BIO_printf(bio_s_out, "ALPN protocols selected: ");
1058         BIO_write(bio_s_out, *out, *outlen);
1059         BIO_write(bio_s_out, "\n", 1);
1060     }
1061 
1062     return SSL_TLSEXT_ERR_OK;
1063 }
1064 #endif                          /* ndef OPENSSL_NO_TLSEXT */
1065 
1066 int MAIN(int, char **);
1067 
1068 #ifndef OPENSSL_NO_JPAKE
1069 static char *jpake_secret = NULL;
1070 # define no_jpake !jpake_secret
1071 #else
1072 # define no_jpake 1
1073 #endif
1074 #ifndef OPENSSL_NO_SRP
1075 static srpsrvparm srp_callback_parm;
1076 #endif
1077 #ifndef OPENSSL_NO_SRTP
1078 static char *srtp_profiles = NULL;
1079 #endif
1080 
1081 int MAIN(int argc, char *argv[])
1082 {
1083     X509_VERIFY_PARAM *vpm = NULL;
1084     int badarg = 0;
1085     short port = PORT;
1086     char *CApath = NULL, *CAfile = NULL;
1087     char *chCApath = NULL, *chCAfile = NULL;
1088     char *vfyCApath = NULL, *vfyCAfile = NULL;
1089     unsigned char *context = NULL;
1090     char *dhfile = NULL;
1091     int badop = 0;
1092     int ret = 1;
1093     int build_chain = 0;
1094     int no_tmp_rsa = 0, no_dhe = 0, no_ecdhe = 0, nocert = 0;
1095     int state = 0;
1096     const SSL_METHOD *meth = NULL;
1097     int socket_type = SOCK_STREAM;
1098     ENGINE *e = NULL;
1099     char *inrand = NULL;
1100     int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
1101     char *passarg = NULL, *pass = NULL;
1102     char *dpassarg = NULL, *dpass = NULL;
1103     int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
1104     X509 *s_cert = NULL, *s_dcert = NULL;
1105     STACK_OF(X509) *s_chain = NULL, *s_dchain = NULL;
1106     EVP_PKEY *s_key = NULL, *s_dkey = NULL;
1107     int no_cache = 0, ext_cache = 0;
1108     int rev = 0, naccept = -1;
1109 #ifndef OPENSSL_NO_TLSEXT
1110     EVP_PKEY *s_key2 = NULL;
1111     X509 *s_cert2 = NULL;
1112     tlsextctx tlsextcbp = { NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING };
1113 # ifndef OPENSSL_NO_NEXTPROTONEG
1114     const char *next_proto_neg_in = NULL;
1115     tlsextnextprotoctx next_proto = { NULL, 0 };
1116 # endif
1117     const char *alpn_in = NULL;
1118     tlsextalpnctx alpn_ctx = { NULL, 0 };
1119 #endif
1120 #ifndef OPENSSL_NO_PSK
1121     /* by default do not send a PSK identity hint */
1122     static char *psk_identity_hint = NULL;
1123 #endif
1124 #ifndef OPENSSL_NO_SRP
1125     char *srpuserseed = NULL;
1126     char *srp_verifier_file = NULL;
1127 #endif
1128     SSL_EXCERT *exc = NULL;
1129     SSL_CONF_CTX *cctx = NULL;
1130     STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
1131 
1132     char *crl_file = NULL;
1133     int crl_format = FORMAT_PEM;
1134     int crl_download = 0;
1135     STACK_OF(X509_CRL) *crls = NULL;
1136     int prot_opt = 0, no_prot_opt = 0;
1137 
1138     meth = SSLv23_server_method();
1139 
1140     local_argc = argc;
1141     local_argv = argv;
1142 
1143     apps_startup();
1144 #ifdef MONOLITH
1145     s_server_init();
1146 #endif
1147 
1148     if (bio_err == NULL)
1149         bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
1150 
1151     if (!load_config(bio_err, NULL))
1152         goto end;
1153 
1154     cctx = SSL_CONF_CTX_new();
1155     if (!cctx)
1156         goto end;
1157     SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);
1158     SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CMDLINE);
1159 
1160     verify_depth = 0;
1161 #ifdef FIONBIO
1162     s_nbio = 0;
1163 #endif
1164     s_nbio_test = 0;
1165 
1166     argc--;
1167     argv++;
1168 
1169     while (argc >= 1) {
1170         if ((strcmp(*argv, "-port") == 0) || (strcmp(*argv, "-accept") == 0)) {
1171             if (--argc < 1)
1172                 goto bad;
1173             if (!extract_port(*(++argv), &port))
1174                 goto bad;
1175         } else if (strcmp(*argv, "-naccept") == 0) {
1176             if (--argc < 1)
1177                 goto bad;
1178             naccept = atol(*(++argv));
1179             if (naccept <= 0) {
1180                 BIO_printf(bio_err, "bad accept value %s\n", *argv);
1181                 goto bad;
1182             }
1183         } else if (strcmp(*argv, "-verify") == 0) {
1184             s_server_verify = SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE;
1185             if (--argc < 1)
1186                 goto bad;
1187             verify_depth = atoi(*(++argv));
1188             if (!s_quiet)
1189                 BIO_printf(bio_err, "verify depth is %d\n", verify_depth);
1190         } else if (strcmp(*argv, "-Verify") == 0) {
1191             s_server_verify =
1192                 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
1193                 SSL_VERIFY_CLIENT_ONCE;
1194             if (--argc < 1)
1195                 goto bad;
1196             verify_depth = atoi(*(++argv));
1197             if (!s_quiet)
1198                 BIO_printf(bio_err,
1199                            "verify depth is %d, must return a certificate\n",
1200                            verify_depth);
1201         } else if (strcmp(*argv, "-context") == 0) {
1202             if (--argc < 1)
1203                 goto bad;
1204             context = (unsigned char *)*(++argv);
1205         } else if (strcmp(*argv, "-cert") == 0) {
1206             if (--argc < 1)
1207                 goto bad;
1208             s_cert_file = *(++argv);
1209         } else if (strcmp(*argv, "-CRL") == 0) {
1210             if (--argc < 1)
1211                 goto bad;
1212             crl_file = *(++argv);
1213         } else if (strcmp(*argv, "-crl_download") == 0)
1214             crl_download = 1;
1215 #ifndef OPENSSL_NO_TLSEXT
1216         else if (strcmp(*argv, "-serverinfo") == 0) {
1217             if (--argc < 1)
1218                 goto bad;
1219             s_serverinfo_file = *(++argv);
1220         }
1221 #endif
1222         else if (strcmp(*argv, "-certform") == 0) {
1223             if (--argc < 1)
1224                 goto bad;
1225             s_cert_format = str2fmt(*(++argv));
1226         } else if (strcmp(*argv, "-key") == 0) {
1227             if (--argc < 1)
1228                 goto bad;
1229             s_key_file = *(++argv);
1230         } else if (strcmp(*argv, "-keyform") == 0) {
1231             if (--argc < 1)
1232                 goto bad;
1233             s_key_format = str2fmt(*(++argv));
1234         } else if (strcmp(*argv, "-pass") == 0) {
1235             if (--argc < 1)
1236                 goto bad;
1237             passarg = *(++argv);
1238         } else if (strcmp(*argv, "-cert_chain") == 0) {
1239             if (--argc < 1)
1240                 goto bad;
1241             s_chain_file = *(++argv);
1242         } else if (strcmp(*argv, "-dhparam") == 0) {
1243             if (--argc < 1)
1244                 goto bad;
1245             dhfile = *(++argv);
1246         } else if (strcmp(*argv, "-dcertform") == 0) {
1247             if (--argc < 1)
1248                 goto bad;
1249             s_dcert_format = str2fmt(*(++argv));
1250         } else if (strcmp(*argv, "-dcert") == 0) {
1251             if (--argc < 1)
1252                 goto bad;
1253             s_dcert_file = *(++argv);
1254         } else if (strcmp(*argv, "-dkeyform") == 0) {
1255             if (--argc < 1)
1256                 goto bad;
1257             s_dkey_format = str2fmt(*(++argv));
1258         } else if (strcmp(*argv, "-dpass") == 0) {
1259             if (--argc < 1)
1260                 goto bad;
1261             dpassarg = *(++argv);
1262         } else if (strcmp(*argv, "-dkey") == 0) {
1263             if (--argc < 1)
1264                 goto bad;
1265             s_dkey_file = *(++argv);
1266         } else if (strcmp(*argv, "-dcert_chain") == 0) {
1267             if (--argc < 1)
1268                 goto bad;
1269             s_dchain_file = *(++argv);
1270         } else if (strcmp(*argv, "-nocert") == 0) {
1271             nocert = 1;
1272         } else if (strcmp(*argv, "-CApath") == 0) {
1273             if (--argc < 1)
1274                 goto bad;
1275             CApath = *(++argv);
1276         } else if (strcmp(*argv, "-chainCApath") == 0) {
1277             if (--argc < 1)
1278                 goto bad;
1279             chCApath = *(++argv);
1280         } else if (strcmp(*argv, "-verifyCApath") == 0) {
1281             if (--argc < 1)
1282                 goto bad;
1283             vfyCApath = *(++argv);
1284         } else if (strcmp(*argv, "-no_cache") == 0)
1285             no_cache = 1;
1286         else if (strcmp(*argv, "-ext_cache") == 0)
1287             ext_cache = 1;
1288         else if (strcmp(*argv, "-CRLform") == 0) {
1289             if (--argc < 1)
1290                 goto bad;
1291             crl_format = str2fmt(*(++argv));
1292         } else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm)) {
1293             if (badarg)
1294                 goto bad;
1295             continue;
1296         } else if (args_excert(&argv, &argc, &badarg, bio_err, &exc)) {
1297             if (badarg)
1298                 goto bad;
1299             continue;
1300         } else if (args_ssl(&argv, &argc, cctx, &badarg, bio_err, &ssl_args,
1301                             &no_prot_opt)) {
1302             if (badarg)
1303                 goto bad;
1304             continue;
1305         } else if (strcmp(*argv, "-verify_return_error") == 0)
1306             verify_return_error = 1;
1307         else if (strcmp(*argv, "-verify_quiet") == 0)
1308             verify_quiet = 1;
1309         else if (strcmp(*argv, "-build_chain") == 0)
1310             build_chain = 1;
1311         else if (strcmp(*argv, "-CAfile") == 0) {
1312             if (--argc < 1)
1313                 goto bad;
1314             CAfile = *(++argv);
1315         } else if (strcmp(*argv, "-chainCAfile") == 0) {
1316             if (--argc < 1)
1317                 goto bad;
1318             chCAfile = *(++argv);
1319         } else if (strcmp(*argv, "-verifyCAfile") == 0) {
1320             if (--argc < 1)
1321                 goto bad;
1322             vfyCAfile = *(++argv);
1323         }
1324 #ifdef FIONBIO
1325         else if (strcmp(*argv, "-nbio") == 0) {
1326             s_nbio = 1;
1327         }
1328 #endif
1329         else if (strcmp(*argv, "-nbio_test") == 0) {
1330 #ifdef FIONBIO
1331             s_nbio = 1;
1332 #endif
1333             s_nbio_test = 1;
1334         } else if (strcmp(*argv, "-ign_eof") == 0)
1335             s_ign_eof = 1;
1336         else if (strcmp(*argv, "-no_ign_eof") == 0)
1337             s_ign_eof = 0;
1338         else if (strcmp(*argv, "-debug") == 0) {
1339             s_debug = 1;
1340         }
1341 #ifndef OPENSSL_NO_TLSEXT
1342         else if (strcmp(*argv, "-tlsextdebug") == 0)
1343             s_tlsextdebug = 1;
1344         else if (strcmp(*argv, "-status") == 0)
1345             s_tlsextstatus = 1;
1346         else if (strcmp(*argv, "-status_verbose") == 0) {
1347             s_tlsextstatus = 1;
1348             tlscstatp.verbose = 1;
1349         } else if (!strcmp(*argv, "-status_timeout")) {
1350             s_tlsextstatus = 1;
1351             if (--argc < 1)
1352                 goto bad;
1353             tlscstatp.timeout = atoi(*(++argv));
1354         } else if (!strcmp(*argv, "-status_url")) {
1355             s_tlsextstatus = 1;
1356             if (--argc < 1)
1357                 goto bad;
1358             if (!OCSP_parse_url(*(++argv),
1359                                 &tlscstatp.host,
1360                                 &tlscstatp.port,
1361                                 &tlscstatp.path, &tlscstatp.use_ssl)) {
1362                 BIO_printf(bio_err, "Error parsing URL\n");
1363                 goto bad;
1364             }
1365         }
1366 #endif
1367         else if (strcmp(*argv, "-msg") == 0) {
1368             s_msg = 1;
1369         } else if (strcmp(*argv, "-msgfile") == 0) {
1370             if (--argc < 1)
1371                 goto bad;
1372             bio_s_msg = BIO_new_file(*(++argv), "w");
1373         }
1374 #ifndef OPENSSL_NO_SSL_TRACE
1375         else if (strcmp(*argv, "-trace") == 0) {
1376             s_msg = 2;
1377         }
1378 #endif
1379         else if (strcmp(*argv, "-hack") == 0) {
1380             hack = 1;
1381         } else if (strcmp(*argv, "-state") == 0) {
1382             state = 1;
1383         } else if (strcmp(*argv, "-crlf") == 0) {
1384             s_crlf = 1;
1385         } else if (strcmp(*argv, "-quiet") == 0) {
1386             s_quiet = 1;
1387         } else if (strcmp(*argv, "-brief") == 0) {
1388             s_quiet = 1;
1389             s_brief = 1;
1390             verify_quiet = 1;
1391         } else if (strcmp(*argv, "-no_tmp_rsa") == 0) {
1392             no_tmp_rsa = 1;
1393         } else if (strcmp(*argv, "-no_dhe") == 0) {
1394             no_dhe = 1;
1395         } else if (strcmp(*argv, "-no_ecdhe") == 0) {
1396             no_ecdhe = 1;
1397         } else if (strcmp(*argv, "-no_resume_ephemeral") == 0) {
1398             no_resume_ephemeral = 1;
1399         }
1400 #ifndef OPENSSL_NO_PSK
1401         else if (strcmp(*argv, "-psk_hint") == 0) {
1402             if (--argc < 1)
1403                 goto bad;
1404             psk_identity_hint = *(++argv);
1405         } else if (strcmp(*argv, "-psk") == 0) {
1406             size_t i;
1407 
1408             if (--argc < 1)
1409                 goto bad;
1410             psk_key = *(++argv);
1411             for (i = 0; i < strlen(psk_key); i++) {
1412                 if (isxdigit((unsigned char)psk_key[i]))
1413                     continue;
1414                 BIO_printf(bio_err, "Not a hex number '%s'\n", *argv);
1415                 goto bad;
1416             }
1417         }
1418 #endif
1419 #ifndef OPENSSL_NO_SRP
1420         else if (strcmp(*argv, "-srpvfile") == 0) {
1421             if (--argc < 1)
1422                 goto bad;
1423             srp_verifier_file = *(++argv);
1424             meth = TLSv1_server_method();
1425         } else if (strcmp(*argv, "-srpuserseed") == 0) {
1426             if (--argc < 1)
1427                 goto bad;
1428             srpuserseed = *(++argv);
1429             meth = TLSv1_server_method();
1430         }
1431 #endif
1432         else if (strcmp(*argv, "-rev") == 0) {
1433             rev = 1;
1434         } else if (strcmp(*argv, "-www") == 0) {
1435             www = 1;
1436         } else if (strcmp(*argv, "-WWW") == 0) {
1437             www = 2;
1438         } else if (strcmp(*argv, "-HTTP") == 0) {
1439             www = 3;
1440         }
1441 #ifndef OPENSSL_NO_SSL2
1442         else if (strcmp(*argv, "-ssl2") == 0) {
1443             no_ecdhe = 1;
1444             meth = SSLv2_server_method();
1445             prot_opt++;
1446         }
1447 #endif
1448 #ifndef OPENSSL_NO_SSL3_METHOD
1449         else if (strcmp(*argv, "-ssl3") == 0) {
1450             meth = SSLv3_server_method();
1451             prot_opt++;
1452         }
1453 #endif
1454 #ifndef OPENSSL_NO_TLS1
1455         else if (strcmp(*argv, "-tls1") == 0) {
1456             meth = TLSv1_server_method();
1457             prot_opt++;
1458         } else if (strcmp(*argv, "-tls1_1") == 0) {
1459             meth = TLSv1_1_server_method();
1460             prot_opt++;
1461         } else if (strcmp(*argv, "-tls1_2") == 0) {
1462             meth = TLSv1_2_server_method();
1463             prot_opt++;
1464         }
1465 #endif
1466 #ifndef OPENSSL_NO_DTLS1
1467         else if (strcmp(*argv, "-dtls") == 0) {
1468             meth = DTLS_server_method();
1469             socket_type = SOCK_DGRAM;
1470             prot_opt++;
1471         } else if (strcmp(*argv, "-dtls1") == 0) {
1472             meth = DTLSv1_server_method();
1473             socket_type = SOCK_DGRAM;
1474             prot_opt++;
1475         } else if (strcmp(*argv, "-dtls1_2") == 0) {
1476             meth = DTLSv1_2_server_method();
1477             socket_type = SOCK_DGRAM;
1478             prot_opt++;
1479         } else if (strcmp(*argv, "-timeout") == 0)
1480             enable_timeouts = 1;
1481         else if (strcmp(*argv, "-mtu") == 0) {
1482             if (--argc < 1)
1483                 goto bad;
1484             socket_mtu = atol(*(++argv));
1485         } else if (strcmp(*argv, "-chain") == 0)
1486             cert_chain = 1;
1487 #endif
1488         else if (strcmp(*argv, "-id_prefix") == 0) {
1489             if (--argc < 1)
1490                 goto bad;
1491             session_id_prefix = *(++argv);
1492         }
1493 #ifndef OPENSSL_NO_ENGINE
1494         else if (strcmp(*argv, "-engine") == 0) {
1495             if (--argc < 1)
1496                 goto bad;
1497             engine_id = *(++argv);
1498         }
1499 #endif
1500         else if (strcmp(*argv, "-rand") == 0) {
1501             if (--argc < 1)
1502                 goto bad;
1503             inrand = *(++argv);
1504         }
1505 #ifndef OPENSSL_NO_TLSEXT
1506         else if (strcmp(*argv, "-servername") == 0) {
1507             if (--argc < 1)
1508                 goto bad;
1509             tlsextcbp.servername = *(++argv);
1510         } else if (strcmp(*argv, "-servername_fatal") == 0) {
1511             tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL;
1512         } else if (strcmp(*argv, "-cert2") == 0) {
1513             if (--argc < 1)
1514                 goto bad;
1515             s_cert_file2 = *(++argv);
1516         } else if (strcmp(*argv, "-key2") == 0) {
1517             if (--argc < 1)
1518                 goto bad;
1519             s_key_file2 = *(++argv);
1520         }
1521 # ifndef OPENSSL_NO_NEXTPROTONEG
1522         else if (strcmp(*argv, "-nextprotoneg") == 0) {
1523             if (--argc < 1)
1524                 goto bad;
1525             next_proto_neg_in = *(++argv);
1526         }
1527 # endif
1528         else if (strcmp(*argv, "-alpn") == 0) {
1529             if (--argc < 1)
1530                 goto bad;
1531             alpn_in = *(++argv);
1532         }
1533 #endif
1534 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
1535         else if (strcmp(*argv, "-jpake") == 0) {
1536             if (--argc < 1)
1537                 goto bad;
1538             jpake_secret = *(++argv);
1539         }
1540 #endif
1541 #ifndef OPENSSL_NO_SRTP
1542         else if (strcmp(*argv, "-use_srtp") == 0) {
1543             if (--argc < 1)
1544                 goto bad;
1545             srtp_profiles = *(++argv);
1546         }
1547 #endif
1548         else if (strcmp(*argv, "-keymatexport") == 0) {
1549             if (--argc < 1)
1550                 goto bad;
1551             keymatexportlabel = *(++argv);
1552         } else if (strcmp(*argv, "-keymatexportlen") == 0) {
1553             if (--argc < 1)
1554                 goto bad;
1555             keymatexportlen = atoi(*(++argv));
1556             if (keymatexportlen == 0)
1557                 goto bad;
1558         } else {
1559             BIO_printf(bio_err, "unknown option %s\n", *argv);
1560             badop = 1;
1561             break;
1562         }
1563         argc--;
1564         argv++;
1565     }
1566     if (badop) {
1567  bad:
1568         sv_usage();
1569         goto end;
1570     }
1571 #ifndef OPENSSL_NO_DTLS1
1572     if (www && socket_type == SOCK_DGRAM) {
1573         BIO_printf(bio_err, "Can't use -HTTP, -www or -WWW with DTLS\n");
1574         goto end;
1575     }
1576 #endif
1577 
1578 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
1579     if (jpake_secret) {
1580         if (psk_key) {
1581             BIO_printf(bio_err, "Can't use JPAKE and PSK together\n");
1582             goto end;
1583         }
1584         psk_identity = "JPAKE";
1585     }
1586 #endif
1587 
1588     if (prot_opt > 1) {
1589         BIO_printf(bio_err, "Cannot supply multiple protocol flags\n");
1590         goto end;
1591     }
1592 
1593     if (prot_opt == 1 && no_prot_opt) {
1594         BIO_printf(bio_err, "Cannot supply both a protocol flag and "
1595                             "\"-no_<prot>\"\n");
1596         goto end;
1597     }
1598 
1599     SSL_load_error_strings();
1600     OpenSSL_add_ssl_algorithms();
1601 
1602     e = setup_engine(bio_err, engine_id, 1);
1603 
1604     if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass)) {
1605         BIO_printf(bio_err, "Error getting password\n");
1606         goto end;
1607     }
1608 
1609     if (s_key_file == NULL)
1610         s_key_file = s_cert_file;
1611 #ifndef OPENSSL_NO_TLSEXT
1612     if (s_key_file2 == NULL)
1613         s_key_file2 = s_cert_file2;
1614 #endif
1615 
1616     if (!load_excert(&exc, bio_err))
1617         goto end;
1618 
1619     if (nocert == 0) {
1620         s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,
1621                          "server certificate private key file");
1622         if (!s_key) {
1623             ERR_print_errors(bio_err);
1624             goto end;
1625         }
1626 
1627         s_cert = load_cert(bio_err, s_cert_file, s_cert_format,
1628                            NULL, e, "server certificate file");
1629 
1630         if (!s_cert) {
1631             ERR_print_errors(bio_err);
1632             goto end;
1633         }
1634         if (s_chain_file) {
1635             s_chain = load_certs(bio_err, s_chain_file, FORMAT_PEM,
1636                                  NULL, e, "server certificate chain");
1637             if (!s_chain)
1638                 goto end;
1639         }
1640 #ifndef OPENSSL_NO_TLSEXT
1641         if (tlsextcbp.servername) {
1642             s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
1643                               "second server certificate private key file");
1644             if (!s_key2) {
1645                 ERR_print_errors(bio_err);
1646                 goto end;
1647             }
1648 
1649             s_cert2 = load_cert(bio_err, s_cert_file2, s_cert_format,
1650                                 NULL, e, "second server certificate file");
1651 
1652             if (!s_cert2) {
1653                 ERR_print_errors(bio_err);
1654                 goto end;
1655             }
1656         }
1657 #endif                          /* OPENSSL_NO_TLSEXT */
1658     }
1659 #if !defined(OPENSSL_NO_TLSEXT)
1660 # if !defined(OPENSSL_NO_NEXTPROTONEG)
1661     if (next_proto_neg_in) {
1662         unsigned short len;
1663         next_proto.data = next_protos_parse(&len, next_proto_neg_in);
1664         if (next_proto.data == NULL)
1665             goto end;
1666         next_proto.len = len;
1667     } else {
1668         next_proto.data = NULL;
1669     }
1670 # endif
1671     alpn_ctx.data = NULL;
1672     if (alpn_in) {
1673         unsigned short len;
1674         alpn_ctx.data = next_protos_parse(&len, alpn_in);
1675         if (alpn_ctx.data == NULL)
1676             goto end;
1677         alpn_ctx.len = len;
1678     }
1679 #endif
1680 
1681     if (crl_file) {
1682         X509_CRL *crl;
1683         crl = load_crl(crl_file, crl_format);
1684         if (!crl) {
1685             BIO_puts(bio_err, "Error loading CRL\n");
1686             ERR_print_errors(bio_err);
1687             goto end;
1688         }
1689         crls = sk_X509_CRL_new_null();
1690         if (!crls || !sk_X509_CRL_push(crls, crl)) {
1691             BIO_puts(bio_err, "Error adding CRL\n");
1692             ERR_print_errors(bio_err);
1693             X509_CRL_free(crl);
1694             goto end;
1695         }
1696     }
1697 
1698     if (s_dcert_file) {
1699 
1700         if (s_dkey_file == NULL)
1701             s_dkey_file = s_dcert_file;
1702 
1703         s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,
1704                           0, dpass, e, "second certificate private key file");
1705         if (!s_dkey) {
1706             ERR_print_errors(bio_err);
1707             goto end;
1708         }
1709 
1710         s_dcert = load_cert(bio_err, s_dcert_file, s_dcert_format,
1711                             NULL, e, "second server certificate file");
1712 
1713         if (!s_dcert) {
1714             ERR_print_errors(bio_err);
1715             goto end;
1716         }
1717         if (s_dchain_file) {
1718             s_dchain = load_certs(bio_err, s_dchain_file, FORMAT_PEM,
1719                                   NULL, e, "second server certificate chain");
1720             if (!s_dchain)
1721                 goto end;
1722         }
1723 
1724     }
1725 
1726     if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1727         && !RAND_status()) {
1728         BIO_printf(bio_err,
1729                    "warning, not much extra random data, consider using the -rand option\n");
1730     }
1731     if (inrand != NULL)
1732         BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
1733                    app_RAND_load_files(inrand));
1734 
1735     if (bio_s_out == NULL) {
1736         if (s_quiet && !s_debug) {
1737             bio_s_out = BIO_new(BIO_s_null());
1738             if (s_msg && !bio_s_msg)
1739                 bio_s_msg = BIO_new_fp(stdout, BIO_NOCLOSE);
1740         } else {
1741             if (bio_s_out == NULL)
1742                 bio_s_out = BIO_new_fp(stdout, BIO_NOCLOSE);
1743         }
1744     }
1745 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
1746     if (nocert)
1747 #endif
1748     {
1749         s_cert_file = NULL;
1750         s_key_file = NULL;
1751         s_dcert_file = NULL;
1752         s_dkey_file = NULL;
1753 #ifndef OPENSSL_NO_TLSEXT
1754         s_cert_file2 = NULL;
1755         s_key_file2 = NULL;
1756 #endif
1757     }
1758 
1759     ctx = SSL_CTX_new(meth);
1760     if (ctx == NULL) {
1761         ERR_print_errors(bio_err);
1762         goto end;
1763     }
1764     if (session_id_prefix) {
1765         if (strlen(session_id_prefix) >= 32)
1766             BIO_printf(bio_err,
1767                        "warning: id_prefix is too long, only one new session will be possible\n");
1768         else if (strlen(session_id_prefix) >= 16)
1769             BIO_printf(bio_err,
1770                        "warning: id_prefix is too long if you use SSLv2\n");
1771         if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) {
1772             BIO_printf(bio_err, "error setting 'id_prefix'\n");
1773             ERR_print_errors(bio_err);
1774             goto end;
1775         }
1776         BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1777     }
1778     SSL_CTX_set_quiet_shutdown(ctx, 1);
1779     if (hack)
1780         SSL_CTX_set_options(ctx, SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1781     if (exc)
1782         ssl_ctx_set_excert(ctx, exc);
1783 
1784     if (state)
1785         SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
1786     if (no_cache)
1787         SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
1788     else if (ext_cache)
1789         init_session_cache_ctx(ctx);
1790     else
1791         SSL_CTX_sess_set_cache_size(ctx, 128);
1792 
1793 #ifndef OPENSSL_NO_SRTP
1794     if (srtp_profiles != NULL)
1795         SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1796 #endif
1797 
1798 #if 0
1799     if (cipher == NULL)
1800         cipher = getenv("SSL_CIPHER");
1801 #endif
1802 
1803 #if 0
1804     if (s_cert_file == NULL) {
1805         BIO_printf(bio_err,
1806                    "You must specify a certificate file for the server to use\n");
1807         goto end;
1808     }
1809 #endif
1810 
1811     if ((!SSL_CTX_load_verify_locations(ctx, CAfile, CApath)) ||
1812         (!SSL_CTX_set_default_verify_paths(ctx))) {
1813         /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
1814         ERR_print_errors(bio_err);
1815         /* goto end; */
1816     }
1817     if (vpm)
1818         SSL_CTX_set1_param(ctx, vpm);
1819 
1820     ssl_ctx_add_crls(ctx, crls, 0);
1821 
1822     if (!args_ssl_call(ctx, bio_err, cctx, ssl_args, no_ecdhe, no_jpake))
1823         goto end;
1824 
1825     if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, chCApath, chCAfile,
1826                          crls, crl_download)) {
1827         BIO_printf(bio_err, "Error loading store locations\n");
1828         ERR_print_errors(bio_err);
1829         goto end;
1830     }
1831 #ifndef OPENSSL_NO_TLSEXT
1832     if (s_cert2) {
1833         ctx2 = SSL_CTX_new(meth);
1834         if (ctx2 == NULL) {
1835             ERR_print_errors(bio_err);
1836             goto end;
1837         }
1838     }
1839 
1840     if (ctx2) {
1841         BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
1842 
1843         if (session_id_prefix) {
1844             if (strlen(session_id_prefix) >= 32)
1845                 BIO_printf(bio_err,
1846                            "warning: id_prefix is too long, only one new session will be possible\n");
1847             else if (strlen(session_id_prefix) >= 16)
1848                 BIO_printf(bio_err,
1849                            "warning: id_prefix is too long if you use SSLv2\n");
1850             if (!SSL_CTX_set_generate_session_id(ctx2, generate_session_id)) {
1851                 BIO_printf(bio_err, "error setting 'id_prefix'\n");
1852                 ERR_print_errors(bio_err);
1853                 goto end;
1854             }
1855             BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1856         }
1857         SSL_CTX_set_quiet_shutdown(ctx2, 1);
1858         if (hack)
1859             SSL_CTX_set_options(ctx2, SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1860         if (exc)
1861             ssl_ctx_set_excert(ctx2, exc);
1862 
1863         if (state)
1864             SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
1865 
1866         if (no_cache)
1867             SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
1868         else if (ext_cache)
1869             init_session_cache_ctx(ctx2);
1870         else
1871             SSL_CTX_sess_set_cache_size(ctx2, 128);
1872 
1873         if ((!SSL_CTX_load_verify_locations(ctx2, CAfile, CApath)) ||
1874             (!SSL_CTX_set_default_verify_paths(ctx2))) {
1875             ERR_print_errors(bio_err);
1876         }
1877         if (vpm)
1878             SSL_CTX_set1_param(ctx2, vpm);
1879 
1880         ssl_ctx_add_crls(ctx2, crls, 0);
1881 
1882         if (!args_ssl_call(ctx2, bio_err, cctx, ssl_args, no_ecdhe, no_jpake))
1883             goto end;
1884 
1885     }
1886 # ifndef OPENSSL_NO_NEXTPROTONEG
1887     if (next_proto.data)
1888         SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb,
1889                                               &next_proto);
1890 # endif
1891     if (alpn_ctx.data)
1892         SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
1893 #endif
1894 
1895 #ifndef OPENSSL_NO_DH
1896     if (!no_dhe) {
1897         DH *dh = NULL;
1898 
1899         if (dhfile)
1900             dh = load_dh_param(dhfile);
1901         else if (s_cert_file)
1902             dh = load_dh_param(s_cert_file);
1903 
1904         if (dh != NULL) {
1905             BIO_printf(bio_s_out, "Setting temp DH parameters\n");
1906         } else {
1907             BIO_printf(bio_s_out, "Using default temp DH parameters\n");
1908             dh = get_dh2048();
1909             if (dh == NULL) {
1910                 ERR_print_errors(bio_err);
1911                 goto end;
1912             }
1913         }
1914         (void)BIO_flush(bio_s_out);
1915 
1916         SSL_CTX_set_tmp_dh(ctx, dh);
1917 # ifndef OPENSSL_NO_TLSEXT
1918         if (ctx2) {
1919             if (!dhfile) {
1920                 DH *dh2 = load_dh_param(s_cert_file2);
1921                 if (dh2 != NULL) {
1922                     BIO_printf(bio_s_out, "Setting temp DH parameters\n");
1923                     (void)BIO_flush(bio_s_out);
1924 
1925                     DH_free(dh);
1926                     dh = dh2;
1927                 }
1928             }
1929             SSL_CTX_set_tmp_dh(ctx2, dh);
1930         }
1931 # endif
1932         DH_free(dh);
1933     }
1934 #endif
1935 
1936     if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
1937         goto end;
1938 #ifndef OPENSSL_NO_TLSEXT
1939     if (s_serverinfo_file != NULL
1940         && !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file)) {
1941         ERR_print_errors(bio_err);
1942         goto end;
1943     }
1944 #endif
1945 #ifndef OPENSSL_NO_TLSEXT
1946     if (ctx2 && !set_cert_key_stuff(ctx2, s_cert2, s_key2, NULL, build_chain))
1947         goto end;
1948 #endif
1949     if (s_dcert != NULL) {
1950         if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
1951             goto end;
1952     }
1953 #ifndef OPENSSL_NO_RSA
1954 # if 1
1955     if (!no_tmp_rsa) {
1956         SSL_CTX_set_tmp_rsa_callback(ctx, tmp_rsa_cb);
1957 #  ifndef OPENSSL_NO_TLSEXT
1958         if (ctx2)
1959             SSL_CTX_set_tmp_rsa_callback(ctx2, tmp_rsa_cb);
1960 #  endif
1961     }
1962 # else
1963     if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx)) {
1964         RSA *rsa;
1965 
1966         BIO_printf(bio_s_out, "Generating temp (512 bit) RSA key...");
1967         BIO_flush(bio_s_out);
1968 
1969         rsa = RSA_generate_key(512, RSA_F4, NULL);
1970 
1971         if (!SSL_CTX_set_tmp_rsa(ctx, rsa)) {
1972             ERR_print_errors(bio_err);
1973             goto end;
1974         }
1975 #  ifndef OPENSSL_NO_TLSEXT
1976         if (ctx2) {
1977             if (!SSL_CTX_set_tmp_rsa(ctx2, rsa)) {
1978                 ERR_print_errors(bio_err);
1979                 goto end;
1980             }
1981         }
1982 #  endif
1983         RSA_free(rsa);
1984         BIO_printf(bio_s_out, "\n");
1985     }
1986 # endif
1987 #endif
1988 
1989 #ifndef OPENSSL_NO_PSK
1990 # ifdef OPENSSL_NO_JPAKE
1991     if (psk_key != NULL)
1992 # else
1993     if (psk_key != NULL || jpake_secret)
1994 # endif
1995     {
1996         if (s_debug)
1997             BIO_printf(bio_s_out,
1998                        "PSK key given or JPAKE in use, setting server callback\n");
1999         SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
2000     }
2001 
2002     if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) {
2003         BIO_printf(bio_err, "error setting PSK identity hint to context\n");
2004         ERR_print_errors(bio_err);
2005         goto end;
2006     }
2007 #endif
2008 
2009     SSL_CTX_set_verify(ctx, s_server_verify, verify_callback);
2010     SSL_CTX_set_session_id_context(ctx, (void *)&s_server_session_id_context,
2011                                    sizeof s_server_session_id_context);
2012 
2013     /* Set DTLS cookie generation and verification callbacks */
2014     SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
2015     SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
2016 
2017 #ifndef OPENSSL_NO_TLSEXT
2018     if (ctx2) {
2019         SSL_CTX_set_verify(ctx2, s_server_verify, verify_callback);
2020         SSL_CTX_set_session_id_context(ctx2,
2021                                        (void *)&s_server_session_id_context,
2022                                        sizeof s_server_session_id_context);
2023 
2024         tlsextcbp.biodebug = bio_s_out;
2025         SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
2026         SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
2027         SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
2028         SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
2029     }
2030 #endif
2031 
2032 #ifndef OPENSSL_NO_SRP
2033     if (srp_verifier_file != NULL) {
2034         srp_callback_parm.vb = SRP_VBASE_new(srpuserseed);
2035         srp_callback_parm.user = NULL;
2036         srp_callback_parm.login = NULL;
2037         if ((ret =
2038              SRP_VBASE_init(srp_callback_parm.vb,
2039                             srp_verifier_file)) != SRP_NO_ERROR) {
2040             BIO_printf(bio_err,
2041                        "Cannot initialize SRP verifier file \"%s\":ret=%d\n",
2042                        srp_verifier_file, ret);
2043             goto end;
2044         }
2045         SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, verify_callback);
2046         SSL_CTX_set_srp_cb_arg(ctx, &srp_callback_parm);
2047         SSL_CTX_set_srp_username_callback(ctx, ssl_srp_server_param_cb);
2048     } else
2049 #endif
2050     if (CAfile != NULL) {
2051         SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
2052 #ifndef OPENSSL_NO_TLSEXT
2053         if (ctx2)
2054             SSL_CTX_set_client_CA_list(ctx2, SSL_load_client_CA_file(CAfile));
2055 #endif
2056     }
2057 
2058     BIO_printf(bio_s_out, "ACCEPT\n");
2059     (void)BIO_flush(bio_s_out);
2060     if (rev)
2061         do_server(port, socket_type, &accept_socket, rev_body, context,
2062                   naccept);
2063     else if (www)
2064         do_server(port, socket_type, &accept_socket, www_body, context,
2065                   naccept);
2066     else
2067         do_server(port, socket_type, &accept_socket, sv_body, context,
2068                   naccept);
2069     print_stats(bio_s_out, ctx);
2070     ret = 0;
2071  end:
2072     if (ctx != NULL)
2073         SSL_CTX_free(ctx);
2074     if (s_cert)
2075         X509_free(s_cert);
2076     if (crls)
2077         sk_X509_CRL_pop_free(crls, X509_CRL_free);
2078     if (s_dcert)
2079         X509_free(s_dcert);
2080     if (s_key)
2081         EVP_PKEY_free(s_key);
2082     if (s_dkey)
2083         EVP_PKEY_free(s_dkey);
2084     if (s_chain)
2085         sk_X509_pop_free(s_chain, X509_free);
2086     if (s_dchain)
2087         sk_X509_pop_free(s_dchain, X509_free);
2088     if (pass)
2089         OPENSSL_free(pass);
2090     if (dpass)
2091         OPENSSL_free(dpass);
2092     if (vpm)
2093         X509_VERIFY_PARAM_free(vpm);
2094     free_sessions();
2095 #ifndef OPENSSL_NO_TLSEXT
2096     if (tlscstatp.host)
2097         OPENSSL_free(tlscstatp.host);
2098     if (tlscstatp.port)
2099         OPENSSL_free(tlscstatp.port);
2100     if (tlscstatp.path)
2101         OPENSSL_free(tlscstatp.path);
2102     if (ctx2 != NULL)
2103         SSL_CTX_free(ctx2);
2104     if (s_cert2)
2105         X509_free(s_cert2);
2106     if (s_key2)
2107         EVP_PKEY_free(s_key2);
2108     if (serverinfo_in != NULL)
2109         BIO_free(serverinfo_in);
2110 # ifndef OPENSSL_NO_NEXTPROTONEG
2111     if (next_proto.data)
2112         OPENSSL_free(next_proto.data);
2113 # endif
2114     if (alpn_ctx.data)
2115         OPENSSL_free(alpn_ctx.data);
2116 #endif
2117     ssl_excert_free(exc);
2118     if (ssl_args)
2119         sk_OPENSSL_STRING_free(ssl_args);
2120     if (cctx)
2121         SSL_CONF_CTX_free(cctx);
2122 #ifndef OPENSSL_NO_JPAKE
2123     if (jpake_secret && psk_key)
2124         OPENSSL_free(psk_key);
2125 #endif
2126     release_engine(e);
2127     if (bio_s_out != NULL) {
2128         BIO_free(bio_s_out);
2129         bio_s_out = NULL;
2130     }
2131     if (bio_s_msg != NULL) {
2132         BIO_free(bio_s_msg);
2133         bio_s_msg = NULL;
2134     }
2135     apps_shutdown();
2136     OPENSSL_EXIT(ret);
2137 }
2138 
2139 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
2140 {
2141     BIO_printf(bio, "%4ld items in the session cache\n",
2142                SSL_CTX_sess_number(ssl_ctx));
2143     BIO_printf(bio, "%4ld client connects (SSL_connect())\n",
2144                SSL_CTX_sess_connect(ssl_ctx));
2145     BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n",
2146                SSL_CTX_sess_connect_renegotiate(ssl_ctx));
2147     BIO_printf(bio, "%4ld client connects that finished\n",
2148                SSL_CTX_sess_connect_good(ssl_ctx));
2149     BIO_printf(bio, "%4ld server accepts (SSL_accept())\n",
2150                SSL_CTX_sess_accept(ssl_ctx));
2151     BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n",
2152                SSL_CTX_sess_accept_renegotiate(ssl_ctx));
2153     BIO_printf(bio, "%4ld server accepts that finished\n",
2154                SSL_CTX_sess_accept_good(ssl_ctx));
2155     BIO_printf(bio, "%4ld session cache hits\n", SSL_CTX_sess_hits(ssl_ctx));
2156     BIO_printf(bio, "%4ld session cache misses\n",
2157                SSL_CTX_sess_misses(ssl_ctx));
2158     BIO_printf(bio, "%4ld session cache timeouts\n",
2159                SSL_CTX_sess_timeouts(ssl_ctx));
2160     BIO_printf(bio, "%4ld callback cache hits\n",
2161                SSL_CTX_sess_cb_hits(ssl_ctx));
2162     BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n",
2163                SSL_CTX_sess_cache_full(ssl_ctx),
2164                SSL_CTX_sess_get_cache_size(ssl_ctx));
2165 }
2166 
2167 static int sv_body(char *hostname, int s, int stype, unsigned char *context)
2168 {
2169     char *buf = NULL;
2170     fd_set readfds;
2171     int ret = 1, width;
2172     int k, i;
2173     unsigned long l;
2174     SSL *con = NULL;
2175     BIO *sbio;
2176 #ifndef OPENSSL_NO_KRB5
2177     KSSL_CTX *kctx;
2178 #endif
2179     struct timeval timeout;
2180 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
2181     struct timeval tv;
2182 #else
2183     struct timeval *timeoutp;
2184 #endif
2185 
2186     if ((buf = OPENSSL_malloc(bufsize)) == NULL) {
2187         BIO_printf(bio_err, "out of memory\n");
2188         goto err;
2189     }
2190 #ifdef FIONBIO
2191     if (s_nbio) {
2192         unsigned long sl = 1;
2193 
2194         if (!s_quiet)
2195             BIO_printf(bio_err, "turning on non blocking io\n");
2196         if (BIO_socket_ioctl(s, FIONBIO, &sl) < 0)
2197             ERR_print_errors(bio_err);
2198     }
2199 #endif
2200 
2201     if (con == NULL) {
2202         con = SSL_new(ctx);
2203 #ifndef OPENSSL_NO_TLSEXT
2204         if (s_tlsextdebug) {
2205             SSL_set_tlsext_debug_callback(con, tlsext_cb);
2206             SSL_set_tlsext_debug_arg(con, bio_s_out);
2207         }
2208         if (s_tlsextstatus) {
2209             SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
2210             tlscstatp.err = bio_err;
2211             SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
2212         }
2213 #endif
2214 #ifndef OPENSSL_NO_KRB5
2215         if ((kctx = kssl_ctx_new()) != NULL) {
2216             SSL_set0_kssl_ctx(con, kctx);
2217             kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
2218             kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
2219         }
2220 #endif                          /* OPENSSL_NO_KRB5 */
2221         if (context)
2222             SSL_set_session_id_context(con, context, strlen((char *)context));
2223     }
2224     SSL_clear(con);
2225 #if 0
2226 # ifdef TLSEXT_TYPE_opaque_prf_input
2227     SSL_set_tlsext_opaque_prf_input(con, "Test server", 11);
2228 # endif
2229 #endif
2230 
2231     if (stype == SOCK_DGRAM) {
2232 
2233         sbio = BIO_new_dgram(s, BIO_NOCLOSE);
2234 
2235         if (enable_timeouts) {
2236             timeout.tv_sec = 0;
2237             timeout.tv_usec = DGRAM_RCV_TIMEOUT;
2238             BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
2239 
2240             timeout.tv_sec = 0;
2241             timeout.tv_usec = DGRAM_SND_TIMEOUT;
2242             BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
2243         }
2244 
2245         if (socket_mtu) {
2246             if (socket_mtu < DTLS_get_link_min_mtu(con)) {
2247                 BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
2248                            DTLS_get_link_min_mtu(con));
2249                 ret = -1;
2250                 BIO_free(sbio);
2251                 goto err;
2252             }
2253             SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
2254             if (!DTLS_set_link_mtu(con, socket_mtu)) {
2255                 BIO_printf(bio_err, "Failed to set MTU\n");
2256                 ret = -1;
2257                 BIO_free(sbio);
2258                 goto err;
2259             }
2260         } else
2261             /* want to do MTU discovery */
2262             BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
2263 
2264         /* turn on cookie exchange */
2265         SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
2266     } else
2267         sbio = BIO_new_socket(s, BIO_NOCLOSE);
2268 
2269     if (s_nbio_test) {
2270         BIO *test;
2271 
2272         test = BIO_new(BIO_f_nbio_test());
2273         sbio = BIO_push(test, sbio);
2274     }
2275 #ifndef OPENSSL_NO_JPAKE
2276     if (jpake_secret)
2277         jpake_server_auth(bio_s_out, sbio, jpake_secret);
2278 #endif
2279 
2280     SSL_set_bio(con, sbio, sbio);
2281     SSL_set_accept_state(con);
2282     /* SSL_set_fd(con,s); */
2283 
2284     if (s_debug) {
2285         SSL_set_debug(con, 1);
2286         BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
2287         BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
2288     }
2289     if (s_msg) {
2290 #ifndef OPENSSL_NO_SSL_TRACE
2291         if (s_msg == 2)
2292             SSL_set_msg_callback(con, SSL_trace);
2293         else
2294 #endif
2295             SSL_set_msg_callback(con, msg_cb);
2296         SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2297     }
2298 #ifndef OPENSSL_NO_TLSEXT
2299     if (s_tlsextdebug) {
2300         SSL_set_tlsext_debug_callback(con, tlsext_cb);
2301         SSL_set_tlsext_debug_arg(con, bio_s_out);
2302     }
2303 #endif
2304 
2305     if (fileno_stdin() > s)
2306         width = fileno_stdin() + 1;
2307     else
2308         width = s + 1;
2309     for (;;) {
2310         int read_from_terminal;
2311         int read_from_sslcon;
2312 
2313         read_from_terminal = 0;
2314         read_from_sslcon = SSL_pending(con);
2315 
2316         if (!read_from_sslcon) {
2317             FD_ZERO(&readfds);
2318 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined(OPENSSL_SYS_BEOS_R5)
2319             openssl_fdset(fileno_stdin(), &readfds);
2320 #endif
2321             openssl_fdset(s, &readfds);
2322             /*
2323              * Note: under VMS with SOCKETSHR the second parameter is
2324              * currently of type (int *) whereas under other systems it is
2325              * (void *) if you don't have a cast it will choke the compiler:
2326              * if you do have a cast then you can either go for (int *) or
2327              * (void *).
2328              */
2329 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
2330             /*
2331              * Under DOS (non-djgpp) and Windows we can't select on stdin:
2332              * only on sockets. As a workaround we timeout the select every
2333              * second and check for any keypress. In a proper Windows
2334              * application we wouldn't do this because it is inefficient.
2335              */
2336             tv.tv_sec = 1;
2337             tv.tv_usec = 0;
2338             i = select(width, (void *)&readfds, NULL, NULL, &tv);
2339             if ((i < 0) || (!i && !_kbhit()))
2340                 continue;
2341             if (_kbhit())
2342                 read_from_terminal = 1;
2343 #elif defined(OPENSSL_SYS_BEOS_R5)
2344             /* Under BeOS-R5 the situation is similar to DOS */
2345             tv.tv_sec = 1;
2346             tv.tv_usec = 0;
2347             (void)fcntl(fileno_stdin(), F_SETFL, O_NONBLOCK);
2348             i = select(width, (void *)&readfds, NULL, NULL, &tv);
2349             if ((i < 0) || (!i && read(fileno_stdin(), buf, 0) < 0))
2350                 continue;
2351             if (read(fileno_stdin(), buf, 0) >= 0)
2352                 read_from_terminal = 1;
2353             (void)fcntl(fileno_stdin(), F_SETFL, 0);
2354 #else
2355             if ((SSL_version(con) == DTLS1_VERSION) &&
2356                 DTLSv1_get_timeout(con, &timeout))
2357                 timeoutp = &timeout;
2358             else
2359                 timeoutp = NULL;
2360 
2361             i = select(width, (void *)&readfds, NULL, NULL, timeoutp);
2362 
2363             if ((SSL_version(con) == DTLS1_VERSION)
2364                 && DTLSv1_handle_timeout(con) > 0) {
2365                 BIO_printf(bio_err, "TIMEOUT occured\n");
2366             }
2367 
2368             if (i <= 0)
2369                 continue;
2370             if (FD_ISSET(fileno_stdin(), &readfds))
2371                 read_from_terminal = 1;
2372 #endif
2373             if (FD_ISSET(s, &readfds))
2374                 read_from_sslcon = 1;
2375         }
2376         if (read_from_terminal) {
2377             if (s_crlf) {
2378                 int j, lf_num;
2379 
2380                 i = raw_read_stdin(buf, bufsize / 2);
2381                 lf_num = 0;
2382                 /* both loops are skipped when i <= 0 */
2383                 for (j = 0; j < i; j++)
2384                     if (buf[j] == '\n')
2385                         lf_num++;
2386                 for (j = i - 1; j >= 0; j--) {
2387                     buf[j + lf_num] = buf[j];
2388                     if (buf[j] == '\n') {
2389                         lf_num--;
2390                         i++;
2391                         buf[j + lf_num] = '\r';
2392                     }
2393                 }
2394                 assert(lf_num == 0);
2395             } else
2396                 i = raw_read_stdin(buf, bufsize);
2397 
2398             if (!s_quiet && !s_brief) {
2399                 if ((i <= 0) || (buf[0] == 'Q')) {
2400                     BIO_printf(bio_s_out, "DONE\n");
2401                     SHUTDOWN(s);
2402                     close_accept_socket();
2403                     ret = -11;
2404                     goto err;
2405                 }
2406                 if ((i <= 0) || (buf[0] == 'q')) {
2407                     BIO_printf(bio_s_out, "DONE\n");
2408                     if (SSL_version(con) != DTLS1_VERSION)
2409                         SHUTDOWN(s);
2410                     /*
2411                      * close_accept_socket(); ret= -11;
2412                      */
2413                     goto err;
2414                 }
2415 #ifndef OPENSSL_NO_HEARTBEATS
2416                 if ((buf[0] == 'B') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
2417                     BIO_printf(bio_err, "HEARTBEATING\n");
2418                     SSL_heartbeat(con);
2419                     i = 0;
2420                     continue;
2421                 }
2422 #endif
2423                 if ((buf[0] == 'r') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
2424                     SSL_renegotiate(con);
2425                     i = SSL_do_handshake(con);
2426                     printf("SSL_do_handshake -> %d\n", i);
2427                     i = 0;      /* 13; */
2428                     continue;
2429                     /*
2430                      * strcpy(buf,"server side RE-NEGOTIATE\n");
2431                      */
2432                 }
2433                 if ((buf[0] == 'R') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
2434                     SSL_set_verify(con,
2435                                    SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE,
2436                                    NULL);
2437                     SSL_renegotiate(con);
2438                     i = SSL_do_handshake(con);
2439                     printf("SSL_do_handshake -> %d\n", i);
2440                     i = 0;      /* 13; */
2441                     continue;
2442                     /*
2443                      * strcpy(buf,"server side RE-NEGOTIATE asking for client
2444                      * cert\n");
2445                      */
2446                 }
2447                 if (buf[0] == 'P') {
2448                     static const char *str = "Lets print some clear text\n";
2449                     BIO_write(SSL_get_wbio(con), str, strlen(str));
2450                 }
2451                 if (buf[0] == 'S') {
2452                     print_stats(bio_s_out, SSL_get_SSL_CTX(con));
2453                 }
2454             }
2455 #ifdef CHARSET_EBCDIC
2456             ebcdic2ascii(buf, buf, i);
2457 #endif
2458             l = k = 0;
2459             for (;;) {
2460                 /* should do a select for the write */
2461 #ifdef RENEG
2462                 {
2463                     static count = 0;
2464                     if (++count == 100) {
2465                         count = 0;
2466                         SSL_renegotiate(con);
2467                     }
2468                 }
2469 #endif
2470                 k = SSL_write(con, &(buf[l]), (unsigned int)i);
2471 #ifndef OPENSSL_NO_SRP
2472                 while (SSL_get_error(con, k) == SSL_ERROR_WANT_X509_LOOKUP) {
2473                     BIO_printf(bio_s_out, "LOOKUP renego during write\n");
2474                     SRP_user_pwd_free(srp_callback_parm.user);
2475                     srp_callback_parm.user =
2476                         SRP_VBASE_get1_by_user(srp_callback_parm.vb,
2477                                                srp_callback_parm.login);
2478                     if (srp_callback_parm.user)
2479                         BIO_printf(bio_s_out, "LOOKUP done %s\n",
2480                                    srp_callback_parm.user->info);
2481                     else
2482                         BIO_printf(bio_s_out, "LOOKUP not successful\n");
2483                     k = SSL_write(con, &(buf[l]), (unsigned int)i);
2484                 }
2485 #endif
2486                 switch (SSL_get_error(con, k)) {
2487                 case SSL_ERROR_NONE:
2488                     break;
2489                 case SSL_ERROR_WANT_WRITE:
2490                 case SSL_ERROR_WANT_READ:
2491                 case SSL_ERROR_WANT_X509_LOOKUP:
2492                     BIO_printf(bio_s_out, "Write BLOCK\n");
2493                     break;
2494                 case SSL_ERROR_SYSCALL:
2495                 case SSL_ERROR_SSL:
2496                     BIO_printf(bio_s_out, "ERROR\n");
2497                     ERR_print_errors(bio_err);
2498                     ret = 1;
2499                     goto err;
2500                     /* break; */
2501                 case SSL_ERROR_ZERO_RETURN:
2502                     BIO_printf(bio_s_out, "DONE\n");
2503                     ret = 1;
2504                     goto err;
2505                 }
2506                 if (k > 0) {
2507                     l += k;
2508                     i -= k;
2509                 }
2510                 if (i <= 0)
2511                     break;
2512             }
2513         }
2514         if (read_from_sslcon) {
2515             if (!SSL_is_init_finished(con)) {
2516                 i = init_ssl_connection(con);
2517 
2518                 if (i < 0) {
2519                     ret = 0;
2520                     goto err;
2521                 } else if (i == 0) {
2522                     ret = 1;
2523                     goto err;
2524                 }
2525             } else {
2526  again:
2527                 i = SSL_read(con, (char *)buf, bufsize);
2528 #ifndef OPENSSL_NO_SRP
2529                 while (SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2530                     BIO_printf(bio_s_out, "LOOKUP renego during read\n");
2531                     SRP_user_pwd_free(srp_callback_parm.user);
2532                     srp_callback_parm.user =
2533                         SRP_VBASE_get1_by_user(srp_callback_parm.vb,
2534                                                srp_callback_parm.login);
2535                     if (srp_callback_parm.user)
2536                         BIO_printf(bio_s_out, "LOOKUP done %s\n",
2537                                    srp_callback_parm.user->info);
2538                     else
2539                         BIO_printf(bio_s_out, "LOOKUP not successful\n");
2540                     i = SSL_read(con, (char *)buf, bufsize);
2541                 }
2542 #endif
2543                 switch (SSL_get_error(con, i)) {
2544                 case SSL_ERROR_NONE:
2545 #ifdef CHARSET_EBCDIC
2546                     ascii2ebcdic(buf, buf, i);
2547 #endif
2548                     raw_write_stdout(buf, (unsigned int)i);
2549                     if (SSL_pending(con))
2550                         goto again;
2551                     break;
2552                 case SSL_ERROR_WANT_WRITE:
2553                 case SSL_ERROR_WANT_READ:
2554                     BIO_printf(bio_s_out, "Read BLOCK\n");
2555                     break;
2556                 case SSL_ERROR_SYSCALL:
2557                 case SSL_ERROR_SSL:
2558                     BIO_printf(bio_s_out, "ERROR\n");
2559                     ERR_print_errors(bio_err);
2560                     ret = 1;
2561                     goto err;
2562                 case SSL_ERROR_ZERO_RETURN:
2563                     BIO_printf(bio_s_out, "DONE\n");
2564                     ret = 1;
2565                     goto err;
2566                 }
2567             }
2568         }
2569     }
2570  err:
2571     if (con != NULL) {
2572         BIO_printf(bio_s_out, "shutting down SSL\n");
2573 #if 1
2574         SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
2575 #else
2576         SSL_shutdown(con);
2577 #endif
2578         SSL_free(con);
2579     }
2580     BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
2581     if (buf != NULL) {
2582         OPENSSL_cleanse(buf, bufsize);
2583         OPENSSL_free(buf);
2584     }
2585     if (ret >= 0)
2586         BIO_printf(bio_s_out, "ACCEPT\n");
2587     return (ret);
2588 }
2589 
2590 static void close_accept_socket(void)
2591 {
2592     BIO_printf(bio_err, "shutdown accept socket\n");
2593     if (accept_socket >= 0) {
2594         SHUTDOWN2(accept_socket);
2595     }
2596 }
2597 
2598 static int init_ssl_connection(SSL *con)
2599 {
2600     int i;
2601     const char *str;
2602     X509 *peer;
2603     long verify_error;
2604     MS_STATIC char buf[BUFSIZ];
2605 #ifndef OPENSSL_NO_KRB5
2606     char *client_princ;
2607 #endif
2608 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2609     const unsigned char *next_proto_neg;
2610     unsigned next_proto_neg_len;
2611 #endif
2612     unsigned char *exportedkeymat;
2613 
2614     i = SSL_accept(con);
2615 #ifdef CERT_CB_TEST_RETRY
2616     {
2617         while (i <= 0 && SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
2618                && SSL_state(con) == SSL3_ST_SR_CLNT_HELLO_C) {
2619             fprintf(stderr,
2620                     "LOOKUP from certificate callback during accept\n");
2621             i = SSL_accept(con);
2622         }
2623     }
2624 #endif
2625 #ifndef OPENSSL_NO_SRP
2626     while (i <= 0 && SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2627         BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
2628                    srp_callback_parm.login);
2629         SRP_user_pwd_free(srp_callback_parm.user);
2630         srp_callback_parm.user =
2631             SRP_VBASE_get1_by_user(srp_callback_parm.vb,
2632                                    srp_callback_parm.login);
2633         if (srp_callback_parm.user)
2634             BIO_printf(bio_s_out, "LOOKUP done %s\n",
2635                        srp_callback_parm.user->info);
2636         else
2637             BIO_printf(bio_s_out, "LOOKUP not successful\n");
2638         i = SSL_accept(con);
2639     }
2640 #endif
2641 
2642     if (i <= 0) {
2643         if (BIO_sock_should_retry(i)) {
2644             BIO_printf(bio_s_out, "DELAY\n");
2645             return (1);
2646         }
2647 
2648         BIO_printf(bio_err, "ERROR\n");
2649         verify_error = SSL_get_verify_result(con);
2650         if (verify_error != X509_V_OK) {
2651             BIO_printf(bio_err, "verify error:%s\n",
2652                        X509_verify_cert_error_string(verify_error));
2653         }
2654         /* Always print any error messages */
2655         ERR_print_errors(bio_err);
2656         return (0);
2657     }
2658 
2659     if (s_brief)
2660         print_ssl_summary(bio_err, con);
2661 
2662     PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con));
2663 
2664     peer = SSL_get_peer_certificate(con);
2665     if (peer != NULL) {
2666         BIO_printf(bio_s_out, "Client certificate\n");
2667         PEM_write_bio_X509(bio_s_out, peer);
2668         X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof buf);
2669         BIO_printf(bio_s_out, "subject=%s\n", buf);
2670         X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof buf);
2671         BIO_printf(bio_s_out, "issuer=%s\n", buf);
2672         X509_free(peer);
2673     }
2674 
2675     if (SSL_get_shared_ciphers(con, buf, sizeof buf) != NULL)
2676         BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf);
2677     str = SSL_CIPHER_get_name(SSL_get_current_cipher(con));
2678     ssl_print_sigalgs(bio_s_out, con);
2679 #ifndef OPENSSL_NO_EC
2680     ssl_print_point_formats(bio_s_out, con);
2681     ssl_print_curves(bio_s_out, con, 0);
2682 #endif
2683     BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
2684 
2685 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2686     SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
2687     if (next_proto_neg) {
2688         BIO_printf(bio_s_out, "NEXTPROTO is ");
2689         BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
2690         BIO_printf(bio_s_out, "\n");
2691     }
2692 #endif
2693 #ifndef OPENSSL_NO_SRTP
2694     {
2695         SRTP_PROTECTION_PROFILE *srtp_profile
2696             = SSL_get_selected_srtp_profile(con);
2697 
2698         if (srtp_profile)
2699             BIO_printf(bio_s_out, "SRTP Extension negotiated, profile=%s\n",
2700                        srtp_profile->name);
2701     }
2702 #endif
2703     if (SSL_cache_hit(con))
2704         BIO_printf(bio_s_out, "Reused session-id\n");
2705     if (SSL_ctrl(con, SSL_CTRL_GET_FLAGS, 0, NULL) &
2706         TLS1_FLAGS_TLS_PADDING_BUG)
2707         BIO_printf(bio_s_out, "Peer has incorrect TLSv1 block padding\n");
2708 #ifndef OPENSSL_NO_KRB5
2709     client_princ = kssl_ctx_get0_client_princ(SSL_get0_kssl_ctx(con));
2710     if (client_princ != NULL) {
2711         BIO_printf(bio_s_out, "Kerberos peer principal is %s\n",
2712                    client_princ);
2713     }
2714 #endif                          /* OPENSSL_NO_KRB5 */
2715     BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
2716                SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
2717     if (keymatexportlabel != NULL) {
2718         BIO_printf(bio_s_out, "Keying material exporter:\n");
2719         BIO_printf(bio_s_out, "    Label: '%s'\n", keymatexportlabel);
2720         BIO_printf(bio_s_out, "    Length: %i bytes\n", keymatexportlen);
2721         exportedkeymat = OPENSSL_malloc(keymatexportlen);
2722         if (exportedkeymat != NULL) {
2723             if (!SSL_export_keying_material(con, exportedkeymat,
2724                                             keymatexportlen,
2725                                             keymatexportlabel,
2726                                             strlen(keymatexportlabel),
2727                                             NULL, 0, 0)) {
2728                 BIO_printf(bio_s_out, "    Error\n");
2729             } else {
2730                 BIO_printf(bio_s_out, "    Keying material: ");
2731                 for (i = 0; i < keymatexportlen; i++)
2732                     BIO_printf(bio_s_out, "%02X", exportedkeymat[i]);
2733                 BIO_printf(bio_s_out, "\n");
2734             }
2735             OPENSSL_free(exportedkeymat);
2736         }
2737     }
2738 
2739     return (1);
2740 }
2741 
2742 #ifndef OPENSSL_NO_DH
2743 static DH *load_dh_param(const char *dhfile)
2744 {
2745     DH *ret = NULL;
2746     BIO *bio;
2747 
2748     if ((bio = BIO_new_file(dhfile, "r")) == NULL)
2749         goto err;
2750     ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2751  err:
2752     if (bio != NULL)
2753         BIO_free(bio);
2754     return (ret);
2755 }
2756 #endif
2757 #ifndef OPENSSL_NO_KRB5
2758 char *client_princ;
2759 #endif
2760 
2761 #if 0
2762 static int load_CA(SSL_CTX *ctx, char *file)
2763 {
2764     FILE *in;
2765     X509 *x = NULL;
2766 
2767     if ((in = fopen(file, "r")) == NULL)
2768         return (0);
2769 
2770     for (;;) {
2771         if (PEM_read_X509(in, &x, NULL) == NULL)
2772             break;
2773         SSL_CTX_add_client_CA(ctx, x);
2774     }
2775     if (x != NULL)
2776         X509_free(x);
2777     fclose(in);
2778     return (1);
2779 }
2780 #endif
2781 
2782 static int www_body(char *hostname, int s, int stype, unsigned char *context)
2783 {
2784     char *buf = NULL;
2785     int ret = 1;
2786     int i, j, k, dot;
2787     SSL *con;
2788     const SSL_CIPHER *c;
2789     BIO *io, *ssl_bio, *sbio;
2790 #ifndef OPENSSL_NO_KRB5
2791     KSSL_CTX *kctx;
2792 #endif
2793 
2794     buf = OPENSSL_malloc(bufsize);
2795     if (buf == NULL)
2796         return (0);
2797     io = BIO_new(BIO_f_buffer());
2798     ssl_bio = BIO_new(BIO_f_ssl());
2799     if ((io == NULL) || (ssl_bio == NULL))
2800         goto err;
2801 
2802 #ifdef FIONBIO
2803     if (s_nbio) {
2804         unsigned long sl = 1;
2805 
2806         if (!s_quiet)
2807             BIO_printf(bio_err, "turning on non blocking io\n");
2808         if (BIO_socket_ioctl(s, FIONBIO, &sl) < 0)
2809             ERR_print_errors(bio_err);
2810     }
2811 #endif
2812 
2813     /* lets make the output buffer a reasonable size */
2814     if (!BIO_set_write_buffer_size(io, bufsize))
2815         goto err;
2816 
2817     if ((con = SSL_new(ctx)) == NULL)
2818         goto err;
2819 #ifndef OPENSSL_NO_TLSEXT
2820     if (s_tlsextdebug) {
2821         SSL_set_tlsext_debug_callback(con, tlsext_cb);
2822         SSL_set_tlsext_debug_arg(con, bio_s_out);
2823     }
2824 #endif
2825 #ifndef OPENSSL_NO_KRB5
2826     if ((kctx = kssl_ctx_new()) != NULL) {
2827         kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
2828         kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
2829     }
2830 #endif                          /* OPENSSL_NO_KRB5 */
2831     if (context)
2832         SSL_set_session_id_context(con, context, strlen((char *)context));
2833 
2834     sbio = BIO_new_socket(s, BIO_NOCLOSE);
2835     if (s_nbio_test) {
2836         BIO *test;
2837 
2838         test = BIO_new(BIO_f_nbio_test());
2839         sbio = BIO_push(test, sbio);
2840     }
2841     SSL_set_bio(con, sbio, sbio);
2842     SSL_set_accept_state(con);
2843 
2844     /* SSL_set_fd(con,s); */
2845     BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
2846     BIO_push(io, ssl_bio);
2847 #ifdef CHARSET_EBCDIC
2848     io = BIO_push(BIO_new(BIO_f_ebcdic_filter()), io);
2849 #endif
2850 
2851     if (s_debug) {
2852         SSL_set_debug(con, 1);
2853         BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
2854         BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
2855     }
2856     if (s_msg) {
2857 #ifndef OPENSSL_NO_SSL_TRACE
2858         if (s_msg == 2)
2859             SSL_set_msg_callback(con, SSL_trace);
2860         else
2861 #endif
2862             SSL_set_msg_callback(con, msg_cb);
2863         SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2864     }
2865 
2866     for (;;) {
2867         if (hack) {
2868             i = SSL_accept(con);
2869 #ifndef OPENSSL_NO_SRP
2870             while (i <= 0
2871                    && SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2872                 BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
2873                            srp_callback_parm.login);
2874                 SRP_user_pwd_free(srp_callback_parm.user);
2875                 srp_callback_parm.user =
2876                     SRP_VBASE_get1_by_user(srp_callback_parm.vb,
2877                                            srp_callback_parm.login);
2878                 if (srp_callback_parm.user)
2879                     BIO_printf(bio_s_out, "LOOKUP done %s\n",
2880                                srp_callback_parm.user->info);
2881                 else
2882                     BIO_printf(bio_s_out, "LOOKUP not successful\n");
2883                 i = SSL_accept(con);
2884             }
2885 #endif
2886             switch (SSL_get_error(con, i)) {
2887             case SSL_ERROR_NONE:
2888                 break;
2889             case SSL_ERROR_WANT_WRITE:
2890             case SSL_ERROR_WANT_READ:
2891             case SSL_ERROR_WANT_X509_LOOKUP:
2892                 continue;
2893             case SSL_ERROR_SYSCALL:
2894             case SSL_ERROR_SSL:
2895             case SSL_ERROR_ZERO_RETURN:
2896                 ret = 1;
2897                 goto err;
2898                 /* break; */
2899             }
2900 
2901             SSL_renegotiate(con);
2902             SSL_write(con, NULL, 0);
2903         }
2904 
2905         i = BIO_gets(io, buf, bufsize - 1);
2906         if (i < 0) {            /* error */
2907             if (!BIO_should_retry(io)) {
2908                 if (!s_quiet)
2909                     ERR_print_errors(bio_err);
2910                 goto err;
2911             } else {
2912                 BIO_printf(bio_s_out, "read R BLOCK\n");
2913 #ifndef OPENSSL_NO_SRP
2914                 if (BIO_should_io_special(io)
2915                     && BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
2916                     BIO_printf(bio_s_out, "LOOKUP renego during read\n");
2917                     SRP_user_pwd_free(srp_callback_parm.user);
2918                     srp_callback_parm.user =
2919                         SRP_VBASE_get1_by_user(srp_callback_parm.vb,
2920                                                srp_callback_parm.login);
2921                     if (srp_callback_parm.user)
2922                         BIO_printf(bio_s_out, "LOOKUP done %s\n",
2923                                    srp_callback_parm.user->info);
2924                     else
2925                         BIO_printf(bio_s_out, "LOOKUP not successful\n");
2926                     continue;
2927                 }
2928 #endif
2929 #if defined(OPENSSL_SYS_NETWARE)
2930                 delay(1000);
2931 #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
2932                 sleep(1);
2933 #endif
2934                 continue;
2935             }
2936         } else if (i == 0) {    /* end of input */
2937             ret = 1;
2938             goto end;
2939         }
2940 
2941         /* else we have data */
2942         if (((www == 1) && (strncmp("GET ", buf, 4) == 0)) ||
2943             ((www == 2) && (strncmp("GET /stats ", buf, 11) == 0))) {
2944             char *p;
2945             X509 *peer;
2946             STACK_OF(SSL_CIPHER) *sk;
2947             static const char *space = "                          ";
2948 
2949             BIO_puts(io,
2950                      "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
2951             BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n");
2952             BIO_puts(io, "<pre>\n");
2953 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
2954             BIO_puts(io, "\n");
2955             for (i = 0; i < local_argc; i++) {
2956                 BIO_puts(io, local_argv[i]);
2957                 BIO_write(io, " ", 1);
2958             }
2959             BIO_puts(io, "\n");
2960 
2961             BIO_printf(io,
2962                        "Secure Renegotiation IS%s supported\n",
2963                        SSL_get_secure_renegotiation_support(con) ?
2964                        "" : " NOT");
2965 
2966             /*
2967              * The following is evil and should not really be done
2968              */
2969             BIO_printf(io, "Ciphers supported in s_server binary\n");
2970             sk = SSL_get_ciphers(con);
2971             j = sk_SSL_CIPHER_num(sk);
2972             for (i = 0; i < j; i++) {
2973                 c = sk_SSL_CIPHER_value(sk, i);
2974                 BIO_printf(io, "%-11s:%-25s",
2975                            SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
2976                 if ((((i + 1) % 2) == 0) && (i + 1 != j))
2977                     BIO_puts(io, "\n");
2978             }
2979             BIO_puts(io, "\n");
2980             p = SSL_get_shared_ciphers(con, buf, bufsize);
2981             if (p != NULL) {
2982                 BIO_printf(io,
2983                            "---\nCiphers common between both SSL end points:\n");
2984                 j = i = 0;
2985                 while (*p) {
2986                     if (*p == ':') {
2987                         BIO_write(io, space, 26 - j);
2988                         i++;
2989                         j = 0;
2990                         BIO_write(io, ((i % 3) ? " " : "\n"), 1);
2991                     } else {
2992                         BIO_write(io, p, 1);
2993                         j++;
2994                     }
2995                     p++;
2996                 }
2997                 BIO_puts(io, "\n");
2998             }
2999             ssl_print_sigalgs(io, con);
3000 #ifndef OPENSSL_NO_EC
3001             ssl_print_curves(io, con, 0);
3002 #endif
3003             BIO_printf(io, (SSL_cache_hit(con)
3004                             ? "---\nReused, " : "---\nNew, "));
3005             c = SSL_get_current_cipher(con);
3006             BIO_printf(io, "%s, Cipher is %s\n",
3007                        SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3008             SSL_SESSION_print(io, SSL_get_session(con));
3009             BIO_printf(io, "---\n");
3010             print_stats(io, SSL_get_SSL_CTX(con));
3011             BIO_printf(io, "---\n");
3012             peer = SSL_get_peer_certificate(con);
3013             if (peer != NULL) {
3014                 BIO_printf(io, "Client certificate\n");
3015                 X509_print(io, peer);
3016                 PEM_write_bio_X509(io, peer);
3017             } else
3018                 BIO_puts(io, "no client certificate available\n");
3019             BIO_puts(io, "</BODY></HTML>\r\n\r\n");
3020             break;
3021         } else if ((www == 2 || www == 3)
3022                    && (strncmp("GET /", buf, 5) == 0)) {
3023             BIO *file;
3024             char *p, *e;
3025             static const char *text =
3026                 "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
3027 
3028             /* skip the '/' */
3029             p = &(buf[5]);
3030 
3031             dot = 1;
3032             for (e = p; *e != '\0'; e++) {
3033                 if (e[0] == ' ')
3034                     break;
3035 
3036                 switch (dot) {
3037                 case 1:
3038                     dot = (e[0] == '.') ? 2 : 0;
3039                     break;
3040                 case 2:
3041                     dot = (e[0] == '.') ? 3 : 0;
3042                     break;
3043                 case 3:
3044                     dot = (e[0] == '/') ? -1 : 0;
3045                     break;
3046                 }
3047                 if (dot == 0)
3048                     dot = (e[0] == '/') ? 1 : 0;
3049             }
3050             dot = (dot == 3) || (dot == -1); /* filename contains ".."
3051                                               * component */
3052 
3053             if (*e == '\0') {
3054                 BIO_puts(io, text);
3055                 BIO_printf(io, "'%s' is an invalid file name\r\n", p);
3056                 break;
3057             }
3058             *e = '\0';
3059 
3060             if (dot) {
3061                 BIO_puts(io, text);
3062                 BIO_printf(io, "'%s' contains '..' reference\r\n", p);
3063                 break;
3064             }
3065 
3066             if (*p == '/') {
3067                 BIO_puts(io, text);
3068                 BIO_printf(io, "'%s' is an invalid path\r\n", p);
3069                 break;
3070             }
3071 #if 0
3072             /* append if a directory lookup */
3073             if (e[-1] == '/')
3074                 strcat(p, "index.html");
3075 #endif
3076 
3077             /* if a directory, do the index thang */
3078             if (app_isdir(p) > 0) {
3079 #if 0                           /* must check buffer size */
3080                 strcat(p, "/index.html");
3081 #else
3082                 BIO_puts(io, text);
3083                 BIO_printf(io, "'%s' is a directory\r\n", p);
3084                 break;
3085 #endif
3086             }
3087 
3088             if ((file = BIO_new_file(p, "r")) == NULL) {
3089                 BIO_puts(io, text);
3090                 BIO_printf(io, "Error opening '%s'\r\n", p);
3091                 ERR_print_errors(io);
3092                 break;
3093             }
3094 
3095             if (!s_quiet)
3096                 BIO_printf(bio_err, "FILE:%s\n", p);
3097 
3098             if (www == 2) {
3099                 i = strlen(p);
3100                 if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) ||
3101                     ((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) ||
3102                     ((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0)))
3103                     BIO_puts(io,
3104                              "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3105                 else
3106                     BIO_puts(io,
3107                              "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
3108             }
3109             /* send the file */
3110             for (;;) {
3111                 i = BIO_read(file, buf, bufsize);
3112                 if (i <= 0)
3113                     break;
3114 
3115 #ifdef RENEG
3116                 total_bytes += i;
3117                 fprintf(stderr, "%d\n", i);
3118                 if (total_bytes > 3 * 1024) {
3119                     total_bytes = 0;
3120                     fprintf(stderr, "RENEGOTIATE\n");
3121                     SSL_renegotiate(con);
3122                 }
3123 #endif
3124 
3125                 for (j = 0; j < i;) {
3126 #ifdef RENEG
3127                     {
3128                         static count = 0;
3129                         if (++count == 13) {
3130                             SSL_renegotiate(con);
3131                         }
3132                     }
3133 #endif
3134                     k = BIO_write(io, &(buf[j]), i - j);
3135                     if (k <= 0) {
3136                         if (!BIO_should_retry(io))
3137                             goto write_error;
3138                         else {
3139                             BIO_printf(bio_s_out, "rwrite W BLOCK\n");
3140                         }
3141                     } else {
3142                         j += k;
3143                     }
3144                 }
3145             }
3146  write_error:
3147             BIO_free(file);
3148             break;
3149         }
3150     }
3151 
3152     for (;;) {
3153         i = (int)BIO_flush(io);
3154         if (i <= 0) {
3155             if (!BIO_should_retry(io))
3156                 break;
3157         } else
3158             break;
3159     }
3160  end:
3161 #if 1
3162     /* make sure we re-use sessions */
3163     SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
3164 #else
3165     /* This kills performance */
3166     /*
3167      * SSL_shutdown(con); A shutdown gets sent in the BIO_free_all(io)
3168      * procession
3169      */
3170 #endif
3171 
3172  err:
3173 
3174     if (ret >= 0)
3175         BIO_printf(bio_s_out, "ACCEPT\n");
3176 
3177     if (buf != NULL)
3178         OPENSSL_free(buf);
3179     if (io != NULL)
3180         BIO_free_all(io);
3181 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
3182     return (ret);
3183 }
3184 
3185 static int rev_body(char *hostname, int s, int stype, unsigned char *context)
3186 {
3187     char *buf = NULL;
3188     int i;
3189     int ret = 1;
3190     SSL *con;
3191     BIO *io, *ssl_bio, *sbio;
3192 #ifndef OPENSSL_NO_KRB5
3193     KSSL_CTX *kctx;
3194 #endif
3195 
3196     buf = OPENSSL_malloc(bufsize);
3197     if (buf == NULL)
3198         return (0);
3199     io = BIO_new(BIO_f_buffer());
3200     ssl_bio = BIO_new(BIO_f_ssl());
3201     if ((io == NULL) || (ssl_bio == NULL))
3202         goto err;
3203 
3204     /* lets make the output buffer a reasonable size */
3205     if (!BIO_set_write_buffer_size(io, bufsize))
3206         goto err;
3207 
3208     if ((con = SSL_new(ctx)) == NULL)
3209         goto err;
3210 #ifndef OPENSSL_NO_TLSEXT
3211     if (s_tlsextdebug) {
3212         SSL_set_tlsext_debug_callback(con, tlsext_cb);
3213         SSL_set_tlsext_debug_arg(con, bio_s_out);
3214     }
3215 #endif
3216 #ifndef OPENSSL_NO_KRB5
3217     if ((kctx = kssl_ctx_new()) != NULL) {
3218         kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
3219         kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
3220     }
3221 #endif                          /* OPENSSL_NO_KRB5 */
3222     if (context)
3223         SSL_set_session_id_context(con, context, strlen((char *)context));
3224 
3225     sbio = BIO_new_socket(s, BIO_NOCLOSE);
3226     SSL_set_bio(con, sbio, sbio);
3227     SSL_set_accept_state(con);
3228 
3229     BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3230     BIO_push(io, ssl_bio);
3231 #ifdef CHARSET_EBCDIC
3232     io = BIO_push(BIO_new(BIO_f_ebcdic_filter()), io);
3233 #endif
3234 
3235     if (s_debug) {
3236         SSL_set_debug(con, 1);
3237         BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
3238         BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3239     }
3240     if (s_msg) {
3241 #ifndef OPENSSL_NO_SSL_TRACE
3242         if (s_msg == 2)
3243             SSL_set_msg_callback(con, SSL_trace);
3244         else
3245 #endif
3246             SSL_set_msg_callback(con, msg_cb);
3247         SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3248     }
3249 
3250     for (;;) {
3251         i = BIO_do_handshake(io);
3252         if (i > 0)
3253             break;
3254         if (!BIO_should_retry(io)) {
3255             BIO_puts(bio_err, "CONNECTION FAILURE\n");
3256             ERR_print_errors(bio_err);
3257             goto end;
3258         }
3259 #ifndef OPENSSL_NO_SRP
3260         if (BIO_should_io_special(io)
3261             && BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3262             BIO_printf(bio_s_out, "LOOKUP renego during accept\n");
3263             SRP_user_pwd_free(srp_callback_parm.user);
3264             srp_callback_parm.user =
3265                 SRP_VBASE_get1_by_user(srp_callback_parm.vb,
3266                                        srp_callback_parm.login);
3267             if (srp_callback_parm.user)
3268                 BIO_printf(bio_s_out, "LOOKUP done %s\n",
3269                            srp_callback_parm.user->info);
3270             else
3271                 BIO_printf(bio_s_out, "LOOKUP not successful\n");
3272             continue;
3273         }
3274 #endif
3275     }
3276     BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
3277     print_ssl_summary(bio_err, con);
3278 
3279     for (;;) {
3280         i = BIO_gets(io, buf, bufsize - 1);
3281         if (i < 0) {            /* error */
3282             if (!BIO_should_retry(io)) {
3283                 if (!s_quiet)
3284                     ERR_print_errors(bio_err);
3285                 goto err;
3286             } else {
3287                 BIO_printf(bio_s_out, "read R BLOCK\n");
3288 #ifndef OPENSSL_NO_SRP
3289                 if (BIO_should_io_special(io)
3290                     && BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3291                     BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3292                     SRP_user_pwd_free(srp_callback_parm.user);
3293                     srp_callback_parm.user =
3294                         SRP_VBASE_get1_by_user(srp_callback_parm.vb,
3295                                                srp_callback_parm.login);
3296                     if (srp_callback_parm.user)
3297                         BIO_printf(bio_s_out, "LOOKUP done %s\n",
3298                                    srp_callback_parm.user->info);
3299                     else
3300                         BIO_printf(bio_s_out, "LOOKUP not successful\n");
3301                     continue;
3302                 }
3303 #endif
3304 #if defined(OPENSSL_SYS_NETWARE)
3305                 delay(1000);
3306 #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
3307                 sleep(1);
3308 #endif
3309                 continue;
3310             }
3311         } else if (i == 0) {    /* end of input */
3312             ret = 1;
3313             BIO_printf(bio_err, "CONNECTION CLOSED\n");
3314             goto end;
3315         } else {
3316             char *p = buf + i - 1;
3317             while (i && (*p == '\n' || *p == '\r')) {
3318                 p--;
3319                 i--;
3320             }
3321             if (!s_ign_eof && i == 5 && !strncmp(buf, "CLOSE", 5)) {
3322                 ret = 1;
3323                 BIO_printf(bio_err, "CONNECTION CLOSED\n");
3324                 goto end;
3325             }
3326             BUF_reverse((unsigned char *)buf, NULL, i);
3327             buf[i] = '\n';
3328             BIO_write(io, buf, i + 1);
3329             for (;;) {
3330                 i = BIO_flush(io);
3331                 if (i > 0)
3332                     break;
3333                 if (!BIO_should_retry(io))
3334                     goto end;
3335             }
3336         }
3337     }
3338  end:
3339     /* make sure we re-use sessions */
3340     SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
3341 
3342  err:
3343 
3344     if (buf != NULL)
3345         OPENSSL_free(buf);
3346     if (io != NULL)
3347         BIO_free_all(io);
3348     return (ret);
3349 }
3350 
3351 #ifndef OPENSSL_NO_RSA
3352 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
3353 {
3354     BIGNUM *bn = NULL;
3355     static RSA *rsa_tmp = NULL;
3356 
3357     if (!rsa_tmp && ((bn = BN_new()) == NULL))
3358         BIO_printf(bio_err, "Allocation error in generating RSA key\n");
3359     if (!rsa_tmp && bn) {
3360         if (!s_quiet) {
3361             BIO_printf(bio_err, "Generating temp (%d bit) RSA key...",
3362                        keylength);
3363             (void)BIO_flush(bio_err);
3364         }
3365         if (!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
3366             !RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL)) {
3367             if (rsa_tmp)
3368                 RSA_free(rsa_tmp);
3369             rsa_tmp = NULL;
3370         }
3371         if (!s_quiet) {
3372             BIO_printf(bio_err, "\n");
3373             (void)BIO_flush(bio_err);
3374         }
3375         BN_free(bn);
3376     }
3377     return (rsa_tmp);
3378 }
3379 #endif
3380 
3381 #define MAX_SESSION_ID_ATTEMPTS 10
3382 static int generate_session_id(const SSL *ssl, unsigned char *id,
3383                                unsigned int *id_len)
3384 {
3385     unsigned int count = 0;
3386     do {
3387         if (RAND_bytes(id, *id_len) <= 0)
3388             return 0;
3389         /*
3390          * Prefix the session_id with the required prefix. NB: If our prefix
3391          * is too long, clip it - but there will be worse effects anyway, eg.
3392          * the server could only possibly create 1 session ID (ie. the
3393          * prefix!) so all future session negotiations will fail due to
3394          * conflicts.
3395          */
3396         memcpy(id, session_id_prefix,
3397                (strlen(session_id_prefix) < *id_len) ?
3398                strlen(session_id_prefix) : *id_len);
3399     }
3400     while (SSL_has_matching_session_id(ssl, id, *id_len) &&
3401            (++count < MAX_SESSION_ID_ATTEMPTS));
3402     if (count >= MAX_SESSION_ID_ATTEMPTS)
3403         return 0;
3404     return 1;
3405 }
3406 
3407 /*
3408  * By default s_server uses an in-memory cache which caches SSL_SESSION
3409  * structures without any serialisation. This hides some bugs which only
3410  * become apparent in deployed servers. By implementing a basic external
3411  * session cache some issues can be debugged using s_server.
3412  */
3413 
3414 typedef struct simple_ssl_session_st {
3415     unsigned char *id;
3416     unsigned int idlen;
3417     unsigned char *der;
3418     int derlen;
3419     struct simple_ssl_session_st *next;
3420 } simple_ssl_session;
3421 
3422 static simple_ssl_session *first = NULL;
3423 
3424 static int add_session(SSL *ssl, SSL_SESSION *session)
3425 {
3426     simple_ssl_session *sess;
3427     unsigned char *p;
3428 
3429     sess = OPENSSL_malloc(sizeof(simple_ssl_session));
3430     if (!sess) {
3431         BIO_printf(bio_err, "Out of memory adding session to external cache\n");
3432         return 0;
3433     }
3434 
3435     SSL_SESSION_get_id(session, &sess->idlen);
3436     sess->derlen = i2d_SSL_SESSION(session, NULL);
3437 
3438     sess->id = BUF_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
3439 
3440     sess->der = OPENSSL_malloc(sess->derlen);
3441     if (!sess->id || !sess->der) {
3442         BIO_printf(bio_err, "Out of memory adding session to external cache\n");
3443 
3444         if (sess->id)
3445             OPENSSL_free(sess->id);
3446         if (sess->der)
3447             OPENSSL_free(sess->der);
3448         OPENSSL_free(sess);
3449         return 0;
3450     }
3451     p = sess->der;
3452     i2d_SSL_SESSION(session, &p);
3453 
3454     sess->next = first;
3455     first = sess;
3456     BIO_printf(bio_err, "New session added to external cache\n");
3457     return 0;
3458 }
3459 
3460 static SSL_SESSION *get_session(SSL *ssl, unsigned char *id, int idlen,
3461                                 int *do_copy)
3462 {
3463     simple_ssl_session *sess;
3464     *do_copy = 0;
3465     for (sess = first; sess; sess = sess->next) {
3466         if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
3467             const unsigned char *p = sess->der;
3468             BIO_printf(bio_err, "Lookup session: cache hit\n");
3469             return d2i_SSL_SESSION(NULL, &p, sess->derlen);
3470         }
3471     }
3472     BIO_printf(bio_err, "Lookup session: cache miss\n");
3473     return NULL;
3474 }
3475 
3476 static void del_session(SSL_CTX *sctx, SSL_SESSION *session)
3477 {
3478     simple_ssl_session *sess, *prev = NULL;
3479     const unsigned char *id;
3480     unsigned int idlen;
3481     id = SSL_SESSION_get_id(session, &idlen);
3482     for (sess = first; sess; sess = sess->next) {
3483         if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
3484             if (prev)
3485                 prev->next = sess->next;
3486             else
3487                 first = sess->next;
3488             OPENSSL_free(sess->id);
3489             OPENSSL_free(sess->der);
3490             OPENSSL_free(sess);
3491             return;
3492         }
3493         prev = sess;
3494     }
3495 }
3496 
3497 static void init_session_cache_ctx(SSL_CTX *sctx)
3498 {
3499     SSL_CTX_set_session_cache_mode(sctx,
3500                                    SSL_SESS_CACHE_NO_INTERNAL |
3501                                    SSL_SESS_CACHE_SERVER);
3502     SSL_CTX_sess_set_new_cb(sctx, add_session);
3503     SSL_CTX_sess_set_get_cb(sctx, get_session);
3504     SSL_CTX_sess_set_remove_cb(sctx, del_session);
3505 }
3506 
3507 static void free_sessions(void)
3508 {
3509     simple_ssl_session *sess, *tsess;
3510     for (sess = first; sess;) {
3511         OPENSSL_free(sess->id);
3512         OPENSSL_free(sess->der);
3513         tsess = sess;
3514         sess = sess->next;
3515         OPENSSL_free(tsess);
3516     }
3517     first = NULL;
3518 }
3519