Check EVP_Cipher return values for SSL2
[openssl.git] / apps / s_client.c
1 /* apps/s_client.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 2005 Nokia. All rights reserved.
113  *
114  * The portions of the attached software ("Contribution") is developed by
115  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
116  * license.
117  *
118  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
119  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
120  * support (see RFC 4279) to OpenSSL.
121  *
122  * No patent licenses or other rights except those expressly stated in
123  * the OpenSSL open source license shall be deemed granted or received
124  * expressly, by implication, estoppel, or otherwise.
125  *
126  * No assurances are provided by Nokia that the Contribution does not
127  * infringe the patent or other intellectual property rights of any third
128  * party or that the license provides you with all the necessary rights
129  * to make use of the Contribution.
130  *
131  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
132  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
133  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
134  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
135  * OTHERWISE.
136  */
137
138 #include <assert.h>
139 #include <ctype.h>
140 #include <stdio.h>
141 #include <stdlib.h>
142 #include <string.h>
143 #include <openssl/e_os2.h>
144 #ifdef OPENSSL_NO_STDIO
145 #define APPS_WIN16
146 #endif
147
148 /* With IPv6, it looks like Digital has mixed up the proper order of
149    recursive header file inclusion, resulting in the compiler complaining
150    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
151    is needed to have fileno() declared correctly...  So let's define u_int */
152 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
153 #define __U_INT
154 typedef unsigned int u_int;
155 #endif
156
157 #define USE_SOCKETS
158 #include "apps.h"
159 #include <openssl/x509.h>
160 #include <openssl/ssl.h>
161 #include <openssl/err.h>
162 #include <openssl/pem.h>
163 #include <openssl/rand.h>
164 #include <openssl/ocsp.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_SRP
167 #include <openssl/srp.h>
168 #endif
169 #include "s_apps.h"
170 #include "timeouts.h"
171
172 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
173 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
174 #undef FIONBIO
175 #endif
176
177 #if defined(OPENSSL_SYS_BEOS_R5)
178 #include <fcntl.h>
179 #endif
180
181 #undef PROG
182 #define PROG    s_client_main
183
184 /*#define SSL_HOST_NAME "www.netscape.com" */
185 /*#define SSL_HOST_NAME "193.118.187.102" */
186 #define SSL_HOST_NAME   "localhost"
187
188 /*#define TEST_CERT "client.pem" */ /* no default cert. */
189
190 #undef BUFSIZZ
191 #define BUFSIZZ 1024*8
192
193 extern int verify_depth;
194 extern int verify_error;
195 extern int verify_return_error;
196
197 #ifdef FIONBIO
198 static int c_nbio=0;
199 #endif
200 static int c_Pause=0;
201 static int c_debug=0;
202 #ifndef OPENSSL_NO_TLSEXT
203 static int c_tlsextdebug=0;
204 static int c_status_req=0;
205 #endif
206 static int c_msg=0;
207 static int c_showcerts=0;
208
209 static char *keymatexportlabel=NULL;
210 static int keymatexportlen=20;
211
212 static void sc_usage(void);
213 static void print_stuff(BIO *berr,SSL *con,int full);
214 #ifndef OPENSSL_NO_TLSEXT
215 static int ocsp_resp_cb(SSL *s, void *arg);
216 #endif
217 static BIO *bio_c_out=NULL;
218 static int c_quiet=0;
219 static int c_ign_eof=0;
220
221 #ifndef OPENSSL_NO_PSK
222 /* Default PSK identity and key */
223 static char *psk_identity="Client_identity";
224 /*char *psk_key=NULL;  by default PSK is not used */
225
226 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
227         unsigned int max_identity_len, unsigned char *psk,
228         unsigned int max_psk_len)
229         {
230         unsigned int psk_len = 0;
231         int ret;
232         BIGNUM *bn=NULL;
233
234         if (c_debug)
235                 BIO_printf(bio_c_out, "psk_client_cb\n");
236         if (!hint)
237                 {
238                 /* no ServerKeyExchange message*/
239                 if (c_debug)
240                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
241                 }
242         else if (c_debug)
243                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
244
245         /* lookup PSK identity and PSK key based on the given identity hint here */
246         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
247         if (ret < 0 || (unsigned int)ret > max_identity_len)
248                 goto out_err;
249         if (c_debug)
250                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
251         ret=BN_hex2bn(&bn, psk_key);
252         if (!ret)
253                 {
254                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
255                 if (bn)
256                         BN_free(bn);
257                 return 0;
258                 }
259
260         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
261                 {
262                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
263                         max_psk_len, BN_num_bytes(bn));
264                 BN_free(bn);
265                 return 0;
266                 }
267
268         psk_len=BN_bn2bin(bn, psk);
269         BN_free(bn);
270         if (psk_len == 0)
271                 goto out_err;
272
273         if (c_debug)
274                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
275
276         return psk_len;
277  out_err:
278         if (c_debug)
279                 BIO_printf(bio_err, "Error in PSK client callback\n");
280         return 0;
281         }
282 #endif
283
284 static void sc_usage(void)
285         {
286         BIO_printf(bio_err,"usage: s_client args\n");
287         BIO_printf(bio_err,"\n");
288         BIO_printf(bio_err," -host host     - use -connect instead\n");
289         BIO_printf(bio_err," -port port     - use -connect instead\n");
290         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
291
292         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
293         BIO_printf(bio_err," -verify_return_error - return verification errors\n");
294         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
295         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
296         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
297         BIO_printf(bio_err,"                 not specified but cert file is.\n");
298         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
299         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
300         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
301         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
302         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
303         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
304         BIO_printf(bio_err," -prexit       - print session information even on connection failure\n");
305         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
306         BIO_printf(bio_err," -debug        - extra output\n");
307 #ifdef WATT32
308         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
309 #endif
310         BIO_printf(bio_err," -msg          - Show protocol messages\n");
311         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
312         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
313 #ifdef FIONBIO
314         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
315 #endif
316         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
317         BIO_printf(bio_err," -quiet        - no s_client output\n");
318         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
319         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
320 #ifndef OPENSSL_NO_PSK
321         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
322         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
323 # ifndef OPENSSL_NO_JPAKE
324         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
325 # endif
326 #endif
327 #ifndef OPENSSL_NO_SRP
328         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
329         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
330         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
331         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
332         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
333 #endif
334         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
335 #ifndef OPENSSL_NO_SSL3_METHOD
336         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
337 #endif
338         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
339         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
340         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
341         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");    
342         BIO_printf(bio_err," -fallback_scsv - send TLS_FALLBACK_SCSV\n");
343         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
344         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
345         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
346         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
347         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
348         BIO_printf(bio_err,"                 command to see what is available\n");
349         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
350         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
351         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
352         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
353         BIO_printf(bio_err,"                 are supported.\n");
354 #ifndef OPENSSL_NO_ENGINE
355         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
356 #endif
357         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
358         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
359         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
360 #ifndef OPENSSL_NO_TLSEXT
361         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
362         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
363         BIO_printf(bio_err," -status           - request certificate status from server\n");
364         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
365 # ifndef OPENSSL_NO_NEXTPROTONEG
366         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
367 # endif
368 #endif
369         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
370 #ifndef OPENSSL_NO_SRTP
371         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
372 #endif
373         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
374         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
375         }
376
377 #ifndef OPENSSL_NO_TLSEXT
378
379 /* This is a context that we pass to callbacks */
380 typedef struct tlsextctx_st {
381    BIO * biodebug;
382    int ack;
383 } tlsextctx;
384
385
386 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
387         {
388         tlsextctx * p = (tlsextctx *) arg;
389         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
390         if (SSL_get_servername_type(s) != -1) 
391                 p->ack = !SSL_session_reused(s) && hn != NULL;
392         else 
393                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
394         
395         return SSL_TLSEXT_ERR_OK;
396         }
397
398 #ifndef OPENSSL_NO_SRP
399
400 /* This is a context that we pass to all callbacks */
401 typedef struct srp_arg_st
402         {
403         char *srppassin;
404         char *srplogin;
405         int msg;   /* copy from c_msg */
406         int debug; /* copy from c_debug */
407         int amp;   /* allow more groups */
408         int strength /* minimal size for N */ ;
409         } SRP_ARG;
410
411 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
412
413 static int srp_Verify_N_and_g(BIGNUM *N, BIGNUM *g)
414         {
415         BN_CTX *bn_ctx = BN_CTX_new();
416         BIGNUM *p = BN_new();
417         BIGNUM *r = BN_new();
418         int ret =
419                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
420                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
421                 p != NULL && BN_rshift1(p, N) &&
422
423                 /* p = (N-1)/2 */
424                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
425                 r != NULL &&
426
427                 /* verify g^((N-1)/2) == -1 (mod N) */
428                 BN_mod_exp(r, g, p, N, bn_ctx) &&
429                 BN_add_word(r, 1) &&
430                 BN_cmp(r, N) == 0;
431
432         if(r)
433                 BN_free(r);
434         if(p)
435                 BN_free(p);
436         if(bn_ctx)
437                 BN_CTX_free(bn_ctx);
438         return ret;
439         }
440
441 /* This callback is used here for two purposes:
442    - extended debugging
443    - making some primality tests for unknown groups
444    The callback is only called for a non default group.
445
446    An application does not need the call back at all if
447    only the stanard groups are used.  In real life situations, 
448    client and server already share well known groups, 
449    thus there is no need to verify them. 
450    Furthermore, in case that a server actually proposes a group that
451    is not one of those defined in RFC 5054, it is more appropriate 
452    to add the group to a static list and then compare since 
453    primality tests are rather cpu consuming.
454 */
455
456 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
457         {
458         SRP_ARG *srp_arg = (SRP_ARG *)arg;
459         BIGNUM *N = NULL, *g = NULL;
460         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
461                 return 0;
462         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
463                 {
464                 BIO_printf(bio_err, "SRP parameters:\n"); 
465                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
466                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
467                 BIO_printf(bio_err,"\n");
468                 }
469
470         if (SRP_check_known_gN_param(g,N))
471                 return 1;
472
473         if (srp_arg->amp == 1)
474                 {
475                 if (srp_arg->debug)
476                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
477
478 /* The srp_moregroups is a real debugging feature.
479    Implementors should rather add the value to the known ones.
480    The minimal size has already been tested.
481 */
482                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
483                         return 1;
484                 }       
485         BIO_printf(bio_err, "SRP param N and g rejected.\n");
486         return 0;
487         }
488
489 #define PWD_STRLEN 1024
490
491 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
492         {
493         SRP_ARG *srp_arg = (SRP_ARG *)arg;
494         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
495         PW_CB_DATA cb_tmp;
496         int l;
497
498         cb_tmp.password = (char *)srp_arg->srppassin;
499         cb_tmp.prompt_info = "SRP user";
500         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
501                 {
502                 BIO_printf (bio_err, "Can't read Password\n");
503                 OPENSSL_free(pass);
504                 return NULL;
505                 }
506         *(pass+l)= '\0';
507
508         return pass;
509         }
510
511 #endif
512 #ifndef OPENSSL_NO_SRTP
513         char *srtp_profiles = NULL;
514 #endif
515
516 # ifndef OPENSSL_NO_NEXTPROTONEG
517 /* This the context that we pass to next_proto_cb */
518 typedef struct tlsextnextprotoctx_st {
519         unsigned char *data;
520         unsigned short len;
521         int status;
522 } tlsextnextprotoctx;
523
524 static tlsextnextprotoctx next_proto;
525
526 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
527         {
528         tlsextnextprotoctx *ctx = arg;
529
530         if (!c_quiet)
531                 {
532                 /* We can assume that |in| is syntactically valid. */
533                 unsigned i;
534                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
535                 for (i = 0; i < inlen; )
536                         {
537                         if (i)
538                                 BIO_write(bio_c_out, ", ", 2);
539                         BIO_write(bio_c_out, &in[i + 1], in[i]);
540                         i += in[i] + 1;
541                         }
542                 BIO_write(bio_c_out, "\n", 1);
543                 }
544
545         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
546         return SSL_TLSEXT_ERR_OK;
547         }
548 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
549 #endif
550
551 enum
552 {
553         PROTO_OFF       = 0,
554         PROTO_SMTP,
555         PROTO_POP3,
556         PROTO_IMAP,
557         PROTO_FTP,
558         PROTO_XMPP
559 };
560
561 int MAIN(int, char **);
562
563 int MAIN(int argc, char **argv)
564         {
565         unsigned int off=0, clr=0;
566         SSL *con=NULL;
567 #ifndef OPENSSL_NO_KRB5
568         KSSL_CTX *kctx;
569 #endif
570         int s,k,width,state=0;
571         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
572         int cbuf_len,cbuf_off;
573         int sbuf_len,sbuf_off;
574         fd_set readfds,writefds;
575         short port=PORT;
576         int full_log=1;
577         char *host=SSL_HOST_NAME;
578         char *cert_file=NULL,*key_file=NULL;
579         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
580         char *passarg = NULL, *pass = NULL;
581         X509 *cert = NULL;
582         EVP_PKEY *key = NULL;
583         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
584         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
585         int crlf=0;
586         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
587         SSL_CTX *ctx=NULL;
588         int ret=1,in_init=1,i,nbio_test=0;
589         int starttls_proto = PROTO_OFF;
590         int prexit = 0;
591         X509_VERIFY_PARAM *vpm = NULL;
592         int badarg = 0;
593         const SSL_METHOD *meth=NULL;
594         int socket_type=SOCK_STREAM;
595         BIO *sbio;
596         char *inrand=NULL;
597         int mbuf_len=0;
598         struct timeval timeout, *timeoutp;
599 #ifndef OPENSSL_NO_ENGINE
600         char *engine_id=NULL;
601         char *ssl_client_engine_id=NULL;
602         ENGINE *ssl_client_engine=NULL;
603 #endif
604         ENGINE *e=NULL;
605 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
606         struct timeval tv;
607 #if defined(OPENSSL_SYS_BEOS_R5)
608         int stdin_set = 0;
609 #endif
610 #endif
611 #ifndef OPENSSL_NO_TLSEXT
612         char *servername = NULL; 
613         tlsextctx tlsextcbp = 
614         {NULL,0};
615 # ifndef OPENSSL_NO_NEXTPROTONEG
616         const char *next_proto_neg_in = NULL;
617 # endif
618 #endif
619         char *sess_in = NULL;
620         char *sess_out = NULL;
621         struct sockaddr peer;
622         int peerlen = sizeof(peer);
623         int fallback_scsv = 0;
624         int enable_timeouts = 0 ;
625         long socket_mtu = 0;
626 #ifndef OPENSSL_NO_JPAKE
627         char *jpake_secret = NULL;
628 #endif
629 #ifndef OPENSSL_NO_SRP
630         char * srppass = NULL;
631         int srp_lateuser = 0;
632         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
633 #endif
634
635         meth=SSLv23_client_method();
636
637         apps_startup();
638         c_Pause=0;
639         c_quiet=0;
640         c_ign_eof=0;
641         c_debug=0;
642         c_msg=0;
643         c_showcerts=0;
644
645         if (bio_err == NULL)
646                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
647
648         if (!load_config(bio_err, NULL))
649                 goto end;
650
651         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
652                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
653                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
654                 {
655                 BIO_printf(bio_err,"out of memory\n");
656                 goto end;
657                 }
658
659         verify_depth=0;
660         verify_error=X509_V_OK;
661 #ifdef FIONBIO
662         c_nbio=0;
663 #endif
664
665         argc--;
666         argv++;
667         while (argc >= 1)
668                 {
669                 if      (strcmp(*argv,"-host") == 0)
670                         {
671                         if (--argc < 1) goto bad;
672                         host= *(++argv);
673                         }
674                 else if (strcmp(*argv,"-port") == 0)
675                         {
676                         if (--argc < 1) goto bad;
677                         port=atoi(*(++argv));
678                         if (port == 0) goto bad;
679                         }
680                 else if (strcmp(*argv,"-connect") == 0)
681                         {
682                         if (--argc < 1) goto bad;
683                         if (!extract_host_port(*(++argv),&host,NULL,&port))
684                                 goto bad;
685                         }
686                 else if (strcmp(*argv,"-verify") == 0)
687                         {
688                         verify=SSL_VERIFY_PEER;
689                         if (--argc < 1) goto bad;
690                         verify_depth=atoi(*(++argv));
691                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
692                         }
693                 else if (strcmp(*argv,"-cert") == 0)
694                         {
695                         if (--argc < 1) goto bad;
696                         cert_file= *(++argv);
697                         }
698                 else if (strcmp(*argv,"-sess_out") == 0)
699                         {
700                         if (--argc < 1) goto bad;
701                         sess_out = *(++argv);
702                         }
703                 else if (strcmp(*argv,"-sess_in") == 0)
704                         {
705                         if (--argc < 1) goto bad;
706                         sess_in = *(++argv);
707                         }
708                 else if (strcmp(*argv,"-certform") == 0)
709                         {
710                         if (--argc < 1) goto bad;
711                         cert_format = str2fmt(*(++argv));
712                         }
713                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
714                         {
715                         if (badarg)
716                                 goto bad;
717                         continue;
718                         }
719                 else if (strcmp(*argv,"-verify_return_error") == 0)
720                         verify_return_error = 1;
721                 else if (strcmp(*argv,"-prexit") == 0)
722                         prexit=1;
723                 else if (strcmp(*argv,"-crlf") == 0)
724                         crlf=1;
725                 else if (strcmp(*argv,"-quiet") == 0)
726                         {
727                         c_quiet=1;
728                         c_ign_eof=1;
729                         }
730                 else if (strcmp(*argv,"-ign_eof") == 0)
731                         c_ign_eof=1;
732                 else if (strcmp(*argv,"-no_ign_eof") == 0)
733                         c_ign_eof=0;
734                 else if (strcmp(*argv,"-pause") == 0)
735                         c_Pause=1;
736                 else if (strcmp(*argv,"-debug") == 0)
737                         c_debug=1;
738 #ifndef OPENSSL_NO_TLSEXT
739                 else if (strcmp(*argv,"-tlsextdebug") == 0)
740                         c_tlsextdebug=1;
741                 else if (strcmp(*argv,"-status") == 0)
742                         c_status_req=1;
743 #endif
744 #ifdef WATT32
745                 else if (strcmp(*argv,"-wdebug") == 0)
746                         dbug_init();
747 #endif
748                 else if (strcmp(*argv,"-msg") == 0)
749                         c_msg=1;
750                 else if (strcmp(*argv,"-showcerts") == 0)
751                         c_showcerts=1;
752                 else if (strcmp(*argv,"-nbio_test") == 0)
753                         nbio_test=1;
754                 else if (strcmp(*argv,"-state") == 0)
755                         state=1;
756 #ifndef OPENSSL_NO_PSK
757                 else if (strcmp(*argv,"-psk_identity") == 0)
758                         {
759                         if (--argc < 1) goto bad;
760                         psk_identity=*(++argv);
761                         }
762                 else if (strcmp(*argv,"-psk") == 0)
763                         {
764                         size_t j;
765
766                         if (--argc < 1) goto bad;
767                         psk_key=*(++argv);
768                         for (j = 0; j < strlen(psk_key); j++)
769                                 {
770                                 if (isxdigit((unsigned char)psk_key[j]))
771                                         continue;
772                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
773                                 goto bad;
774                                 }
775                         }
776 #endif
777 #ifndef OPENSSL_NO_SRP
778                 else if (strcmp(*argv,"-srpuser") == 0)
779                         {
780                         if (--argc < 1) goto bad;
781                         srp_arg.srplogin= *(++argv);
782                         meth=TLSv1_client_method();
783                         }
784                 else if (strcmp(*argv,"-srppass") == 0)
785                         {
786                         if (--argc < 1) goto bad;
787                         srppass= *(++argv);
788                         meth=TLSv1_client_method();
789                         }
790                 else if (strcmp(*argv,"-srp_strength") == 0)
791                         {
792                         if (--argc < 1) goto bad;
793                         srp_arg.strength=atoi(*(++argv));
794                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
795                         meth=TLSv1_client_method();
796                         }
797                 else if (strcmp(*argv,"-srp_lateuser") == 0)
798                         {
799                         srp_lateuser= 1;
800                         meth=TLSv1_client_method();
801                         }
802                 else if (strcmp(*argv,"-srp_moregroups") == 0)
803                         {
804                         srp_arg.amp=1;
805                         meth=TLSv1_client_method();
806                         }
807 #endif
808 #ifndef OPENSSL_NO_SSL2
809                 else if (strcmp(*argv,"-ssl2") == 0)
810                         meth=SSLv2_client_method();
811 #endif
812 #ifndef OPENSSL_NO_SSL3_METHOD
813                 else if (strcmp(*argv,"-ssl3") == 0)
814                         meth=SSLv3_client_method();
815 #endif
816 #ifndef OPENSSL_NO_TLS1
817                 else if (strcmp(*argv,"-tls1_2") == 0)
818                         meth=TLSv1_2_client_method();
819                 else if (strcmp(*argv,"-tls1_1") == 0)
820                         meth=TLSv1_1_client_method();
821                 else if (strcmp(*argv,"-tls1") == 0)
822                         meth=TLSv1_client_method();
823 #endif
824 #ifndef OPENSSL_NO_DTLS1
825                 else if (strcmp(*argv,"-dtls1") == 0)
826                         {
827                         meth=DTLSv1_client_method();
828                         socket_type=SOCK_DGRAM;
829                         }
830                 else if (strcmp(*argv,"-fallback_scsv") == 0)
831                         {
832                         fallback_scsv = 1;
833                         }
834                 else if (strcmp(*argv,"-timeout") == 0)
835                         enable_timeouts=1;
836                 else if (strcmp(*argv,"-mtu") == 0)
837                         {
838                         if (--argc < 1) goto bad;
839                         socket_mtu = atol(*(++argv));
840                         }
841 #endif
842                 else if (strcmp(*argv,"-bugs") == 0)
843                         bugs=1;
844                 else if (strcmp(*argv,"-keyform") == 0)
845                         {
846                         if (--argc < 1) goto bad;
847                         key_format = str2fmt(*(++argv));
848                         }
849                 else if (strcmp(*argv,"-pass") == 0)
850                         {
851                         if (--argc < 1) goto bad;
852                         passarg = *(++argv);
853                         }
854                 else if (strcmp(*argv,"-key") == 0)
855                         {
856                         if (--argc < 1) goto bad;
857                         key_file= *(++argv);
858                         }
859                 else if (strcmp(*argv,"-reconnect") == 0)
860                         {
861                         reconnect=5;
862                         }
863                 else if (strcmp(*argv,"-CApath") == 0)
864                         {
865                         if (--argc < 1) goto bad;
866                         CApath= *(++argv);
867                         }
868                 else if (strcmp(*argv,"-CAfile") == 0)
869                         {
870                         if (--argc < 1) goto bad;
871                         CAfile= *(++argv);
872                         }
873                 else if (strcmp(*argv,"-no_tls1_2") == 0)
874                         off|=SSL_OP_NO_TLSv1_2;
875                 else if (strcmp(*argv,"-no_tls1_1") == 0)
876                         off|=SSL_OP_NO_TLSv1_1;
877                 else if (strcmp(*argv,"-no_tls1") == 0)
878                         off|=SSL_OP_NO_TLSv1;
879                 else if (strcmp(*argv,"-no_ssl3") == 0)
880                         off|=SSL_OP_NO_SSLv3;
881                 else if (strcmp(*argv,"-no_ssl2") == 0)
882                         off|=SSL_OP_NO_SSLv2;
883                 else if (strcmp(*argv,"-no_comp") == 0)
884                         { off|=SSL_OP_NO_COMPRESSION; }
885 #ifndef OPENSSL_NO_TLSEXT
886                 else if (strcmp(*argv,"-no_ticket") == 0)
887                         { off|=SSL_OP_NO_TICKET; }
888 # ifndef OPENSSL_NO_NEXTPROTONEG
889                 else if (strcmp(*argv,"-nextprotoneg") == 0)
890                         {
891                         if (--argc < 1) goto bad;
892                         next_proto_neg_in = *(++argv);
893                         }
894 # endif
895 #endif
896                 else if (strcmp(*argv,"-serverpref") == 0)
897                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
898                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
899                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
900                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
901                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
902                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
903                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
904                 else if (strcmp(*argv,"-cipher") == 0)
905                         {
906                         if (--argc < 1) goto bad;
907                         cipher= *(++argv);
908                         }
909 #ifdef FIONBIO
910                 else if (strcmp(*argv,"-nbio") == 0)
911                         { c_nbio=1; }
912 #endif
913                 else if (strcmp(*argv,"-starttls") == 0)
914                         {
915                         if (--argc < 1) goto bad;
916                         ++argv;
917                         if (strcmp(*argv,"smtp") == 0)
918                                 starttls_proto = PROTO_SMTP;
919                         else if (strcmp(*argv,"pop3") == 0)
920                                 starttls_proto = PROTO_POP3;
921                         else if (strcmp(*argv,"imap") == 0)
922                                 starttls_proto = PROTO_IMAP;
923                         else if (strcmp(*argv,"ftp") == 0)
924                                 starttls_proto = PROTO_FTP;
925                         else if (strcmp(*argv, "xmpp") == 0)
926                                 starttls_proto = PROTO_XMPP;
927                         else
928                                 goto bad;
929                         }
930 #ifndef OPENSSL_NO_ENGINE
931                 else if (strcmp(*argv,"-engine") == 0)
932                         {
933                         if (--argc < 1) goto bad;
934                         engine_id = *(++argv);
935                         }
936                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
937                         {
938                         if (--argc < 1) goto bad;
939                         ssl_client_engine_id = *(++argv);
940                         }
941 #endif
942                 else if (strcmp(*argv,"-rand") == 0)
943                         {
944                         if (--argc < 1) goto bad;
945                         inrand= *(++argv);
946                         }
947 #ifndef OPENSSL_NO_TLSEXT
948                 else if (strcmp(*argv,"-servername") == 0)
949                         {
950                         if (--argc < 1) goto bad;
951                         servername= *(++argv);
952                         /* meth=TLSv1_client_method(); */
953                         }
954 #endif
955 #ifndef OPENSSL_NO_JPAKE
956                 else if (strcmp(*argv,"-jpake") == 0)
957                         {
958                         if (--argc < 1) goto bad;
959                         jpake_secret = *++argv;
960                         }
961 #endif
962 #ifndef OPENSSL_NO_SRTP
963                 else if (strcmp(*argv,"-use_srtp") == 0)
964                         {
965                         if (--argc < 1) goto bad;
966                         srtp_profiles = *(++argv);
967                         }
968 #endif
969                 else if (strcmp(*argv,"-keymatexport") == 0)
970                         {
971                         if (--argc < 1) goto bad;
972                         keymatexportlabel= *(++argv);
973                         }
974                 else if (strcmp(*argv,"-keymatexportlen") == 0)
975                         {
976                         if (--argc < 1) goto bad;
977                         keymatexportlen=atoi(*(++argv));
978                         if (keymatexportlen == 0) goto bad;
979                         }
980                 else
981                         {
982                         BIO_printf(bio_err,"unknown option %s\n",*argv);
983                         badop=1;
984                         break;
985                         }
986                 argc--;
987                 argv++;
988                 }
989         if (badop)
990                 {
991 bad:
992                 sc_usage();
993                 goto end;
994                 }
995
996 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
997         if (jpake_secret)
998                 {
999                 if (psk_key)
1000                         {
1001                         BIO_printf(bio_err,
1002                                    "Can't use JPAKE and PSK together\n");
1003                         goto end;
1004                         }
1005                 psk_identity = "JPAKE";
1006                 if (cipher)
1007                         {
1008                         BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
1009                         goto end;
1010                         }
1011                 cipher = "PSK";
1012                 }
1013 #endif
1014
1015         OpenSSL_add_ssl_algorithms();
1016         SSL_load_error_strings();
1017
1018 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1019         next_proto.status = -1;
1020         if (next_proto_neg_in)
1021                 {
1022                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1023                 if (next_proto.data == NULL)
1024                         {
1025                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1026                         goto end;
1027                         }
1028                 }
1029         else
1030                 next_proto.data = NULL;
1031 #endif
1032
1033 #ifndef OPENSSL_NO_ENGINE
1034         e = setup_engine(bio_err, engine_id, 1);
1035         if (ssl_client_engine_id)
1036                 {
1037                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1038                 if (!ssl_client_engine)
1039                         {
1040                         BIO_printf(bio_err,
1041                                         "Error getting client auth engine\n");
1042                         goto end;
1043                         }
1044                 }
1045
1046 #endif
1047         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1048                 {
1049                 BIO_printf(bio_err, "Error getting password\n");
1050                 goto end;
1051                 }
1052
1053         if (key_file == NULL)
1054                 key_file = cert_file;
1055
1056
1057         if (key_file)
1058
1059                 {
1060
1061                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1062                                "client certificate private key file");
1063                 if (!key)
1064                         {
1065                         ERR_print_errors(bio_err);
1066                         goto end;
1067                         }
1068
1069                 }
1070
1071         if (cert_file)
1072
1073                 {
1074                 cert = load_cert(bio_err,cert_file,cert_format,
1075                                 NULL, e, "client certificate file");
1076
1077                 if (!cert)
1078                         {
1079                         ERR_print_errors(bio_err);
1080                         goto end;
1081                         }
1082                 }
1083
1084         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1085                 && !RAND_status())
1086                 {
1087                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1088                 }
1089         if (inrand != NULL)
1090                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1091                         app_RAND_load_files(inrand));
1092
1093         if (bio_c_out == NULL)
1094                 {
1095                 if (c_quiet && !c_debug && !c_msg)
1096                         {
1097                         bio_c_out=BIO_new(BIO_s_null());
1098                         }
1099                 else
1100                         {
1101                         if (bio_c_out == NULL)
1102                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1103                         }
1104                 }
1105
1106 #ifndef OPENSSL_NO_SRP
1107         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1108                 {
1109                 BIO_printf(bio_err, "Error getting password\n");
1110                 goto end;
1111                 }
1112 #endif
1113
1114         ctx=SSL_CTX_new(meth);
1115         if (ctx == NULL)
1116                 {
1117                 ERR_print_errors(bio_err);
1118                 goto end;
1119                 }
1120
1121         if (vpm)
1122                 SSL_CTX_set1_param(ctx, vpm);
1123
1124 #ifndef OPENSSL_NO_ENGINE
1125         if (ssl_client_engine)
1126                 {
1127                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1128                         {
1129                         BIO_puts(bio_err, "Error setting client auth engine\n");
1130                         ERR_print_errors(bio_err);
1131                         ENGINE_free(ssl_client_engine);
1132                         goto end;
1133                         }
1134                 ENGINE_free(ssl_client_engine);
1135                 }
1136 #endif
1137
1138 #ifndef OPENSSL_NO_PSK
1139 #ifdef OPENSSL_NO_JPAKE
1140         if (psk_key != NULL)
1141 #else
1142         if (psk_key != NULL || jpake_secret)
1143 #endif
1144                 {
1145                 if (c_debug)
1146                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1147                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1148                 }
1149 #endif
1150 #ifndef OPENSSL_NO_SRTP
1151         if (srtp_profiles != NULL)
1152                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1153 #endif
1154         if (bugs)
1155                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1156         else
1157                 SSL_CTX_set_options(ctx,off);
1158
1159         if (clr)
1160                 SSL_CTX_clear_options(ctx, clr);
1161         /* DTLS: partial reads end up discarding unread UDP bytes :-( 
1162          * Setting read ahead solves this problem.
1163          */
1164         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1165
1166 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1167         if (next_proto.data)
1168                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1169 #endif
1170
1171         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1172         if (cipher != NULL)
1173                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1174                 BIO_printf(bio_err,"error setting cipher list\n");
1175                 ERR_print_errors(bio_err);
1176                 goto end;
1177         }
1178 #if 0
1179         else
1180                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1181 #endif
1182
1183         SSL_CTX_set_verify(ctx,verify,verify_callback);
1184         if (!set_cert_key_stuff(ctx,cert,key))
1185                 goto end;
1186
1187         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1188                 (!SSL_CTX_set_default_verify_paths(ctx)))
1189                 {
1190                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1191                 ERR_print_errors(bio_err);
1192                 /* goto end; */
1193                 }
1194
1195 #ifndef OPENSSL_NO_TLSEXT
1196         if (servername != NULL)
1197                 {
1198                 tlsextcbp.biodebug = bio_err;
1199                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1200                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1201                 }
1202 #ifndef OPENSSL_NO_SRP
1203         if (srp_arg.srplogin)
1204                 {
1205                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1206                         {
1207                         BIO_printf(bio_err,"Unable to set SRP username\n");
1208                         goto end;
1209                         }
1210                 srp_arg.msg = c_msg;
1211                 srp_arg.debug = c_debug ;
1212                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1213                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1214                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1215                 if (c_msg || c_debug || srp_arg.amp == 0)
1216                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1217                 }
1218
1219 #endif
1220 #endif
1221
1222         con=SSL_new(ctx);
1223         if (sess_in)
1224                 {
1225                 SSL_SESSION *sess;
1226                 BIO *stmp = BIO_new_file(sess_in, "r");
1227                 if (!stmp)
1228                         {
1229                         BIO_printf(bio_err, "Can't open session file %s\n",
1230                                                 sess_in);
1231                         ERR_print_errors(bio_err);
1232                         goto end;
1233                         }
1234                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1235                 BIO_free(stmp);
1236                 if (!sess)
1237                         {
1238                         BIO_printf(bio_err, "Can't open session file %s\n",
1239                                                 sess_in);
1240                         ERR_print_errors(bio_err);
1241                         goto end;
1242                         }
1243                 SSL_set_session(con, sess);
1244                 SSL_SESSION_free(sess);
1245                 }
1246
1247         if (fallback_scsv)
1248                 SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV);
1249
1250 #ifndef OPENSSL_NO_TLSEXT
1251         if (servername != NULL)
1252                 {
1253                 if (!SSL_set_tlsext_host_name(con,servername))
1254                         {
1255                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1256                         ERR_print_errors(bio_err);
1257                         goto end;
1258                         }
1259                 }
1260 #endif
1261 #ifndef OPENSSL_NO_KRB5
1262         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1263                 {
1264                 SSL_set0_kssl_ctx(con, kctx);
1265                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1266                 }
1267 #endif  /* OPENSSL_NO_KRB5  */
1268 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1269 #if 0
1270 #ifdef TLSEXT_TYPE_opaque_prf_input
1271         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1272 #endif
1273 #endif
1274
1275 re_start:
1276
1277         if (init_client(&s,host,port,socket_type) == 0)
1278                 {
1279                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1280                 SHUTDOWN(s);
1281                 goto end;
1282                 }
1283         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1284
1285 #ifdef FIONBIO
1286         if (c_nbio)
1287                 {
1288                 unsigned long l=1;
1289                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1290                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1291                         {
1292                         ERR_print_errors(bio_err);
1293                         goto end;
1294                         }
1295                 }
1296 #endif                                              
1297         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1298
1299         if ( SSL_version(con) == DTLS1_VERSION)
1300                 {
1301
1302                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1303                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1304                         {
1305                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1306                                 get_last_socket_error());
1307                         SHUTDOWN(s);
1308                         goto end;
1309                         }
1310
1311                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1312
1313                 if (enable_timeouts)
1314                         {
1315                         timeout.tv_sec = 0;
1316                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1317                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1318                         
1319                         timeout.tv_sec = 0;
1320                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1321                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1322                         }
1323
1324                 if (socket_mtu > 28)
1325                         {
1326                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1327                         SSL_set_mtu(con, socket_mtu - 28);
1328                         }
1329                 else
1330                         /* want to do MTU discovery */
1331                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1332                 }
1333         else
1334                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1335
1336         if (nbio_test)
1337                 {
1338                 BIO *test;
1339
1340                 test=BIO_new(BIO_f_nbio_test());
1341                 sbio=BIO_push(test,sbio);
1342                 }
1343
1344         if (c_debug)
1345                 {
1346                 SSL_set_debug(con, 1);
1347                 BIO_set_callback(sbio,bio_dump_callback);
1348                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1349                 }
1350         if (c_msg)
1351                 {
1352                 SSL_set_msg_callback(con, msg_cb);
1353                 SSL_set_msg_callback_arg(con, bio_c_out);
1354                 }
1355 #ifndef OPENSSL_NO_TLSEXT
1356         if (c_tlsextdebug)
1357                 {
1358                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1359                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1360                 }
1361         if (c_status_req)
1362                 {
1363                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1364                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1365                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1366 #if 0
1367 {
1368 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1369 OCSP_RESPID *id = OCSP_RESPID_new();
1370 id->value.byKey = ASN1_OCTET_STRING_new();
1371 id->type = V_OCSP_RESPID_KEY;
1372 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1373 sk_OCSP_RESPID_push(ids, id);
1374 SSL_set_tlsext_status_ids(con, ids);
1375 }
1376 #endif
1377                 }
1378 #endif
1379 #ifndef OPENSSL_NO_JPAKE
1380         if (jpake_secret)
1381                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1382 #endif
1383
1384         SSL_set_bio(con,sbio,sbio);
1385         SSL_set_connect_state(con);
1386
1387         /* ok, lets connect */
1388         width=SSL_get_fd(con)+1;
1389
1390         read_tty=1;
1391         write_tty=0;
1392         tty_on=0;
1393         read_ssl=1;
1394         write_ssl=1;
1395         
1396         cbuf_len=0;
1397         cbuf_off=0;
1398         sbuf_len=0;
1399         sbuf_off=0;
1400
1401         /* This is an ugly hack that does a lot of assumptions */
1402         /* We do have to handle multi-line responses which may come
1403            in a single packet or not. We therefore have to use
1404            BIO_gets() which does need a buffering BIO. So during
1405            the initial chitchat we do push a buffering BIO into the
1406            chain that is removed again later on to not disturb the
1407            rest of the s_client operation. */
1408         if (starttls_proto == PROTO_SMTP)
1409                 {
1410                 int foundit=0;
1411                 BIO *fbio = BIO_new(BIO_f_buffer());
1412                 BIO_push(fbio, sbio);
1413                 /* wait for multi-line response to end from SMTP */
1414                 do
1415                         {
1416                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1417                         }
1418                 while (mbuf_len>3 && mbuf[3]=='-');
1419                 /* STARTTLS command requires EHLO... */
1420                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1421                 (void)BIO_flush(fbio);
1422                 /* wait for multi-line response to end EHLO SMTP response */
1423                 do
1424                         {
1425                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1426                         if (strstr(mbuf,"STARTTLS"))
1427                                 foundit=1;
1428                         }
1429                 while (mbuf_len>3 && mbuf[3]=='-');
1430                 (void)BIO_flush(fbio);
1431                 BIO_pop(fbio);
1432                 BIO_free(fbio);
1433                 if (!foundit)
1434                         BIO_printf(bio_err,
1435                                    "didn't found starttls in server response,"
1436                                    " try anyway...\n");
1437                 BIO_printf(sbio,"STARTTLS\r\n");
1438                 BIO_read(sbio,sbuf,BUFSIZZ);
1439                 }
1440         else if (starttls_proto == PROTO_POP3)
1441                 {
1442                 BIO_read(sbio,mbuf,BUFSIZZ);
1443                 BIO_printf(sbio,"STLS\r\n");
1444                 BIO_read(sbio,sbuf,BUFSIZZ);
1445                 }
1446         else if (starttls_proto == PROTO_IMAP)
1447                 {
1448                 int foundit=0;
1449                 BIO *fbio = BIO_new(BIO_f_buffer());
1450                 BIO_push(fbio, sbio);
1451                 BIO_gets(fbio,mbuf,BUFSIZZ);
1452                 /* STARTTLS command requires CAPABILITY... */
1453                 BIO_printf(fbio,". CAPABILITY\r\n");
1454                 (void)BIO_flush(fbio);
1455                 /* wait for multi-line CAPABILITY response */
1456                 do
1457                         {
1458                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1459                         if (strstr(mbuf,"STARTTLS"))
1460                                 foundit=1;
1461                         }
1462                 while (mbuf_len>3 && mbuf[0]!='.');
1463                 (void)BIO_flush(fbio);
1464                 BIO_pop(fbio);
1465                 BIO_free(fbio);
1466                 if (!foundit)
1467                         BIO_printf(bio_err,
1468                                    "didn't found STARTTLS in server response,"
1469                                    " try anyway...\n");
1470                 BIO_printf(sbio,". STARTTLS\r\n");
1471                 BIO_read(sbio,sbuf,BUFSIZZ);
1472                 }
1473         else if (starttls_proto == PROTO_FTP)
1474                 {
1475                 BIO *fbio = BIO_new(BIO_f_buffer());
1476                 BIO_push(fbio, sbio);
1477                 /* wait for multi-line response to end from FTP */
1478                 do
1479                         {
1480                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1481                         }
1482                 while (mbuf_len>3 && mbuf[3]=='-');
1483                 (void)BIO_flush(fbio);
1484                 BIO_pop(fbio);
1485                 BIO_free(fbio);
1486                 BIO_printf(sbio,"AUTH TLS\r\n");
1487                 BIO_read(sbio,sbuf,BUFSIZZ);
1488                 }
1489         if (starttls_proto == PROTO_XMPP)
1490                 {
1491                 int seen = 0;
1492                 BIO_printf(sbio,"<stream:stream "
1493                     "xmlns:stream='http://etherx.jabber.org/streams' "
1494                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1495                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1496                 mbuf[seen] = 0;
1497                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1498                         {
1499                         if (strstr(mbuf, "/stream:features>"))
1500                                 goto shut;
1501                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1502                         mbuf[seen] = 0;
1503                         }
1504                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1505                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1506                 sbuf[seen] = 0;
1507                 if (!strstr(sbuf, "<proceed"))
1508                         goto shut;
1509                 mbuf[0] = 0;
1510                 }
1511
1512         for (;;)
1513                 {
1514                 FD_ZERO(&readfds);
1515                 FD_ZERO(&writefds);
1516
1517                 if ((SSL_version(con) == DTLS1_VERSION) &&
1518                         DTLSv1_get_timeout(con, &timeout))
1519                         timeoutp = &timeout;
1520                 else
1521                         timeoutp = NULL;
1522
1523                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1524                         {
1525                         in_init=1;
1526                         tty_on=0;
1527                         }
1528                 else
1529                         {
1530                         tty_on=1;
1531                         if (in_init)
1532                                 {
1533                                 in_init=0;
1534 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1535 #ifndef OPENSSL_NO_TLSEXT
1536                                 if (servername != NULL && !SSL_session_reused(con))
1537                                         {
1538                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1539                                         }
1540 #endif
1541 #endif
1542                                 if (sess_out)
1543                                         {
1544                                         BIO *stmp = BIO_new_file(sess_out, "w");
1545                                         if (stmp)
1546                                                 {
1547                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1548                                                 BIO_free(stmp);
1549                                                 }
1550                                         else 
1551                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1552                                         }
1553                                 print_stuff(bio_c_out,con,full_log);
1554                                 if (full_log > 0) full_log--;
1555
1556                                 if (starttls_proto)
1557                                         {
1558                                         BIO_printf(bio_err,"%s",mbuf);
1559                                         /* We don't need to know any more */
1560                                         starttls_proto = PROTO_OFF;
1561                                         }
1562
1563                                 if (reconnect)
1564                                         {
1565                                         reconnect--;
1566                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1567                                         SSL_shutdown(con);
1568                                         SSL_set_connect_state(con);
1569                                         SHUTDOWN(SSL_get_fd(con));
1570                                         goto re_start;
1571                                         }
1572                                 }
1573                         }
1574
1575                 ssl_pending = read_ssl && SSL_pending(con);
1576
1577                 if (!ssl_pending)
1578                         {
1579 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1580                         if (tty_on)
1581                                 {
1582                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1583                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1584                                 }
1585                         if (read_ssl)
1586                                 openssl_fdset(SSL_get_fd(con),&readfds);
1587                         if (write_ssl)
1588                                 openssl_fdset(SSL_get_fd(con),&writefds);
1589 #else
1590                         if(!tty_on || !write_tty) {
1591                                 if (read_ssl)
1592                                         openssl_fdset(SSL_get_fd(con),&readfds);
1593                                 if (write_ssl)
1594                                         openssl_fdset(SSL_get_fd(con),&writefds);
1595                         }
1596 #endif
1597 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1598                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1599
1600                         /* Note: under VMS with SOCKETSHR the second parameter
1601                          * is currently of type (int *) whereas under other
1602                          * systems it is (void *) if you don't have a cast it
1603                          * will choke the compiler: if you do have a cast then
1604                          * you can either go for (int *) or (void *).
1605                          */
1606 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1607                         /* Under Windows/DOS we make the assumption that we can
1608                          * always write to the tty: therefore if we need to
1609                          * write to the tty we just fall through. Otherwise
1610                          * we timeout the select every second and see if there
1611                          * are any keypresses. Note: this is a hack, in a proper
1612                          * Windows application we wouldn't do this.
1613                          */
1614                         i=0;
1615                         if(!write_tty) {
1616                                 if(read_tty) {
1617                                         tv.tv_sec = 1;
1618                                         tv.tv_usec = 0;
1619                                         i=select(width,(void *)&readfds,(void *)&writefds,
1620                                                  NULL,&tv);
1621 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1622                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1623 #else
1624                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1625 #endif
1626                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1627                                          NULL,timeoutp);
1628                         }
1629 #elif defined(OPENSSL_SYS_NETWARE)
1630                         if(!write_tty) {
1631                                 if(read_tty) {
1632                                         tv.tv_sec = 1;
1633                                         tv.tv_usec = 0;
1634                                         i=select(width,(void *)&readfds,(void *)&writefds,
1635                                                 NULL,&tv);
1636                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1637                                         NULL,timeoutp);
1638                         }
1639 #elif defined(OPENSSL_SYS_BEOS_R5)
1640                         /* Under BeOS-R5 the situation is similar to DOS */
1641                         i=0;
1642                         stdin_set = 0;
1643                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1644                         if(!write_tty) {
1645                                 if(read_tty) {
1646                                         tv.tv_sec = 1;
1647                                         tv.tv_usec = 0;
1648                                         i=select(width,(void *)&readfds,(void *)&writefds,
1649                                                  NULL,&tv);
1650                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1651                                                 stdin_set = 1;
1652                                         if (!i && (stdin_set != 1 || !read_tty))
1653                                                 continue;
1654                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1655                                          NULL,timeoutp);
1656                         }
1657                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1658 #else
1659                         i=select(width,(void *)&readfds,(void *)&writefds,
1660                                  NULL,timeoutp);
1661 #endif
1662                         if ( i < 0)
1663                                 {
1664                                 BIO_printf(bio_err,"bad select %d\n",
1665                                 get_last_socket_error());
1666                                 goto shut;
1667                                 /* goto end; */
1668                                 }
1669                         }
1670
1671                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1672                         {
1673                         BIO_printf(bio_err,"TIMEOUT occured\n");
1674                         }
1675
1676                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1677                         {
1678                         k=SSL_write(con,&(cbuf[cbuf_off]),
1679                                 (unsigned int)cbuf_len);
1680                         switch (SSL_get_error(con,k))
1681                                 {
1682                         case SSL_ERROR_NONE:
1683                                 cbuf_off+=k;
1684                                 cbuf_len-=k;
1685                                 if (k <= 0) goto end;
1686                                 /* we have done a  write(con,NULL,0); */
1687                                 if (cbuf_len <= 0)
1688                                         {
1689                                         read_tty=1;
1690                                         write_ssl=0;
1691                                         }
1692                                 else /* if (cbuf_len > 0) */
1693                                         {
1694                                         read_tty=0;
1695                                         write_ssl=1;
1696                                         }
1697                                 break;
1698                         case SSL_ERROR_WANT_WRITE:
1699                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1700                                 write_ssl=1;
1701                                 read_tty=0;
1702                                 break;
1703                         case SSL_ERROR_WANT_READ:
1704                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1705                                 write_tty=0;
1706                                 read_ssl=1;
1707                                 write_ssl=0;
1708                                 break;
1709                         case SSL_ERROR_WANT_X509_LOOKUP:
1710                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1711                                 break;
1712                         case SSL_ERROR_ZERO_RETURN:
1713                                 if (cbuf_len != 0)
1714                                         {
1715                                         BIO_printf(bio_c_out,"shutdown\n");
1716                                         ret = 0;
1717                                         goto shut;
1718                                         }
1719                                 else
1720                                         {
1721                                         read_tty=1;
1722                                         write_ssl=0;
1723                                         break;
1724                                         }
1725                                 
1726                         case SSL_ERROR_SYSCALL:
1727                                 if ((k != 0) || (cbuf_len != 0))
1728                                         {
1729                                         BIO_printf(bio_err,"write:errno=%d\n",
1730                                                 get_last_socket_error());
1731                                         goto shut;
1732                                         }
1733                                 else
1734                                         {
1735                                         read_tty=1;
1736                                         write_ssl=0;
1737                                         }
1738                                 break;
1739                         case SSL_ERROR_SSL:
1740                                 ERR_print_errors(bio_err);
1741                                 goto shut;
1742                                 }
1743                         }
1744 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1745                 /* Assume Windows/DOS/BeOS can always write */
1746                 else if (!ssl_pending && write_tty)
1747 #else
1748                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1749 #endif
1750                         {
1751 #ifdef CHARSET_EBCDIC
1752                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1753 #endif
1754                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1755
1756                         if (i <= 0)
1757                                 {
1758                                 BIO_printf(bio_c_out,"DONE\n");
1759                                 ret = 0;
1760                                 goto shut;
1761                                 /* goto end; */
1762                                 }
1763
1764                         sbuf_len-=i;;
1765                         sbuf_off+=i;
1766                         if (sbuf_len <= 0)
1767                                 {
1768                                 read_ssl=1;
1769                                 write_tty=0;
1770                                 }
1771                         }
1772                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1773                         {
1774 #ifdef RENEG
1775 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1776 #endif
1777 #if 1
1778                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1779 #else
1780 /* Demo for pending and peek :-) */
1781                         k=SSL_read(con,sbuf,16);
1782 { char zbuf[10240]; 
1783 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1784 }
1785 #endif
1786
1787                         switch (SSL_get_error(con,k))
1788                                 {
1789                         case SSL_ERROR_NONE:
1790                                 if (k <= 0)
1791                                         goto end;
1792                                 sbuf_off=0;
1793                                 sbuf_len=k;
1794
1795                                 read_ssl=0;
1796                                 write_tty=1;
1797                                 break;
1798                         case SSL_ERROR_WANT_WRITE:
1799                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1800                                 write_ssl=1;
1801                                 read_tty=0;
1802                                 break;
1803                         case SSL_ERROR_WANT_READ:
1804                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1805                                 write_tty=0;
1806                                 read_ssl=1;
1807                                 if ((read_tty == 0) && (write_ssl == 0))
1808                                         write_ssl=1;
1809                                 break;
1810                         case SSL_ERROR_WANT_X509_LOOKUP:
1811                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1812                                 break;
1813                         case SSL_ERROR_SYSCALL:
1814                                 ret=get_last_socket_error();
1815                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1816                                 goto shut;
1817                         case SSL_ERROR_ZERO_RETURN:
1818                                 BIO_printf(bio_c_out,"closed\n");
1819                                 ret=0;
1820                                 goto shut;
1821                         case SSL_ERROR_SSL:
1822                                 ERR_print_errors(bio_err);
1823                                 goto shut;
1824                                 /* break; */
1825                                 }
1826                         }
1827
1828 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1829 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1830                 else if (_kbhit())
1831 #else
1832                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1833 #endif
1834 #elif defined (OPENSSL_SYS_NETWARE)
1835                 else if (_kbhit())
1836 #elif defined(OPENSSL_SYS_BEOS_R5)
1837                 else if (stdin_set)
1838 #else
1839                 else if (FD_ISSET(fileno(stdin),&readfds))
1840 #endif
1841                         {
1842                         if (crlf)
1843                                 {
1844                                 int j, lf_num;
1845
1846                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1847                                 lf_num = 0;
1848                                 /* both loops are skipped when i <= 0 */
1849                                 for (j = 0; j < i; j++)
1850                                         if (cbuf[j] == '\n')
1851                                                 lf_num++;
1852                                 for (j = i-1; j >= 0; j--)
1853                                         {
1854                                         cbuf[j+lf_num] = cbuf[j];
1855                                         if (cbuf[j] == '\n')
1856                                                 {
1857                                                 lf_num--;
1858                                                 i++;
1859                                                 cbuf[j+lf_num] = '\r';
1860                                                 }
1861                                         }
1862                                 assert(lf_num == 0);
1863                                 }
1864                         else
1865                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1866
1867                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1868                                 {
1869                                 BIO_printf(bio_err,"DONE\n");
1870                                 ret=0;
1871                                 goto shut;
1872                                 }
1873
1874                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1875                                 {
1876                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1877                                 SSL_renegotiate(con);
1878                                 cbuf_len=0;
1879                                 }
1880 #ifndef OPENSSL_NO_HEARTBEATS
1881                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1882                                 {
1883                                 BIO_printf(bio_err,"HEARTBEATING\n");
1884                                 SSL_heartbeat(con);
1885                                 cbuf_len=0;
1886                                 }
1887 #endif
1888                         else
1889                                 {
1890                                 cbuf_len=i;
1891                                 cbuf_off=0;
1892 #ifdef CHARSET_EBCDIC
1893                                 ebcdic2ascii(cbuf, cbuf, i);
1894 #endif
1895                                 }
1896
1897                         write_ssl=1;
1898                         read_tty=0;
1899                         }
1900                 }
1901
1902         ret=0;
1903 shut:
1904         if (in_init)
1905                 print_stuff(bio_c_out,con,full_log);
1906         SSL_shutdown(con);
1907         SHUTDOWN(SSL_get_fd(con));
1908 end:
1909         if (con != NULL)
1910                 {
1911                 if (prexit != 0)
1912                         print_stuff(bio_c_out,con,1);
1913                 SSL_free(con);
1914                 }
1915 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1916         if (next_proto.data)
1917                 OPENSSL_free(next_proto.data);
1918 #endif
1919         if (ctx != NULL) SSL_CTX_free(ctx);
1920         if (cert)
1921                 X509_free(cert);
1922         if (key)
1923                 EVP_PKEY_free(key);
1924         if (pass)
1925                 OPENSSL_free(pass);
1926         if (vpm)
1927                 X509_VERIFY_PARAM_free(vpm);
1928         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1929         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1930         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1931         if (bio_c_out != NULL)
1932                 {
1933                 BIO_free(bio_c_out);
1934                 bio_c_out=NULL;
1935                 }
1936         apps_shutdown();
1937         OPENSSL_EXIT(ret);
1938         }
1939
1940
1941 static void print_stuff(BIO *bio, SSL *s, int full)
1942         {
1943         X509 *peer=NULL;
1944         char *p;
1945         static const char *space="                ";
1946         char buf[BUFSIZ];
1947         STACK_OF(X509) *sk;
1948         STACK_OF(X509_NAME) *sk2;
1949         const SSL_CIPHER *c;
1950         X509_NAME *xn;
1951         int j,i;
1952 #ifndef OPENSSL_NO_COMP
1953         const COMP_METHOD *comp, *expansion;
1954 #endif
1955         unsigned char *exportedkeymat;
1956
1957         if (full)
1958                 {
1959                 int got_a_chain = 0;
1960
1961                 sk=SSL_get_peer_cert_chain(s);
1962                 if (sk != NULL)
1963                         {
1964                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1965
1966                         BIO_printf(bio,"---\nCertificate chain\n");
1967                         for (i=0; i<sk_X509_num(sk); i++)
1968                                 {
1969                                 X509_NAME_oneline(X509_get_subject_name(
1970                                         sk_X509_value(sk,i)),buf,sizeof buf);
1971                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1972                                 X509_NAME_oneline(X509_get_issuer_name(
1973                                         sk_X509_value(sk,i)),buf,sizeof buf);
1974                                 BIO_printf(bio,"   i:%s\n",buf);
1975                                 if (c_showcerts)
1976                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1977                                 }
1978                         }
1979
1980                 BIO_printf(bio,"---\n");
1981                 peer=SSL_get_peer_certificate(s);
1982                 if (peer != NULL)
1983                         {
1984                         BIO_printf(bio,"Server certificate\n");
1985                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1986                                 PEM_write_bio_X509(bio,peer);
1987                         X509_NAME_oneline(X509_get_subject_name(peer),
1988                                 buf,sizeof buf);
1989                         BIO_printf(bio,"subject=%s\n",buf);
1990                         X509_NAME_oneline(X509_get_issuer_name(peer),
1991                                 buf,sizeof buf);
1992                         BIO_printf(bio,"issuer=%s\n",buf);
1993                         }
1994                 else
1995                         BIO_printf(bio,"no peer certificate available\n");
1996
1997                 sk2=SSL_get_client_CA_list(s);
1998                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1999                         {
2000                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
2001                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
2002                                 {
2003                                 xn=sk_X509_NAME_value(sk2,i);
2004                                 X509_NAME_oneline(xn,buf,sizeof(buf));
2005                                 BIO_write(bio,buf,strlen(buf));
2006                                 BIO_write(bio,"\n",1);
2007                                 }
2008                         }
2009                 else
2010                         {
2011                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
2012                         }
2013                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2014                 if (p != NULL)
2015                         {
2016                         /* This works only for SSL 2.  In later protocol
2017                          * versions, the client does not know what other
2018                          * ciphers (in addition to the one to be used
2019                          * in the current connection) the server supports. */
2020
2021                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2022                         j=i=0;
2023                         while (*p)
2024                                 {
2025                                 if (*p == ':')
2026                                         {
2027                                         BIO_write(bio,space,15-j%25);
2028                                         i++;
2029                                         j=0;
2030                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2031                                         }
2032                                 else
2033                                         {
2034                                         BIO_write(bio,p,1);
2035                                         j++;
2036                                         }
2037                                 p++;
2038                                 }
2039                         BIO_write(bio,"\n",1);
2040                         }
2041
2042                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2043                         BIO_number_read(SSL_get_rbio(s)),
2044                         BIO_number_written(SSL_get_wbio(s)));
2045                 }
2046         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2047         c=SSL_get_current_cipher(s);
2048         BIO_printf(bio,"%s, Cipher is %s\n",
2049                 SSL_CIPHER_get_version(c),
2050                 SSL_CIPHER_get_name(c));
2051         if (peer != NULL) {
2052                 EVP_PKEY *pktmp;
2053                 pktmp = X509_get_pubkey(peer);
2054                 BIO_printf(bio,"Server public key is %d bit\n",
2055                                                          EVP_PKEY_bits(pktmp));
2056                 EVP_PKEY_free(pktmp);
2057         }
2058         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2059                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2060 #ifndef OPENSSL_NO_COMP
2061         comp=SSL_get_current_compression(s);
2062         expansion=SSL_get_current_expansion(s);
2063         BIO_printf(bio,"Compression: %s\n",
2064                 comp ? SSL_COMP_get_name(comp) : "NONE");
2065         BIO_printf(bio,"Expansion: %s\n",
2066                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2067 #endif
2068  
2069 #ifdef SSL_DEBUG
2070         {
2071         /* Print out local port of connection: useful for debugging */
2072         int sock;
2073         struct sockaddr_in ladd;
2074         socklen_t ladd_size = sizeof(ladd);
2075         sock = SSL_get_fd(s);
2076         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2077         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2078         }
2079 #endif
2080
2081 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2082         if (next_proto.status != -1) {
2083                 const unsigned char *proto;
2084                 unsigned int proto_len;
2085                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2086                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2087                 BIO_write(bio, proto, proto_len);
2088                 BIO_write(bio, "\n", 1);
2089         }
2090 #endif
2091
2092 #ifndef OPENSSL_NO_SRTP
2093         {
2094         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2095  
2096         if(srtp_profile)
2097                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2098                            srtp_profile->name);
2099         }
2100 #endif
2101  
2102         SSL_SESSION_print(bio,SSL_get_session(s));
2103         if (keymatexportlabel != NULL)
2104                 {
2105                 BIO_printf(bio, "Keying material exporter:\n");
2106                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2107                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2108                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2109                 if (exportedkeymat != NULL)
2110                         {
2111                         if (!SSL_export_keying_material(s, exportedkeymat,
2112                                                         keymatexportlen,
2113                                                         keymatexportlabel,
2114                                                         strlen(keymatexportlabel),
2115                                                         NULL, 0, 0))
2116                                 {
2117                                 BIO_printf(bio, "    Error\n");
2118                                 }
2119                         else
2120                                 {
2121                                 BIO_printf(bio, "    Keying material: ");
2122                                 for (i=0; i<keymatexportlen; i++)
2123                                         BIO_printf(bio, "%02X",
2124                                                    exportedkeymat[i]);
2125                                 BIO_printf(bio, "\n");
2126                                 }
2127                         OPENSSL_free(exportedkeymat);
2128                         }
2129                 }
2130         BIO_printf(bio,"---\n");
2131         if (peer != NULL)
2132                 X509_free(peer);
2133         /* flush, or debugging output gets mixed with http response */
2134         (void)BIO_flush(bio);
2135         }
2136
2137 #ifndef OPENSSL_NO_TLSEXT
2138
2139 static int ocsp_resp_cb(SSL *s, void *arg)
2140         {
2141         const unsigned char *p;
2142         int len;
2143         OCSP_RESPONSE *rsp;
2144         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2145         BIO_puts(arg, "OCSP response: ");
2146         if (!p)
2147                 {
2148                 BIO_puts(arg, "no response sent\n");
2149                 return 1;
2150                 }
2151         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2152         if (!rsp)
2153                 {
2154                 BIO_puts(arg, "response parse error\n");
2155                 BIO_dump_indent(arg, (char *)p, len, 4);
2156                 return 0;
2157                 }
2158         BIO_puts(arg, "\n======================================\n");
2159         OCSP_RESPONSE_print(arg, rsp, 0);
2160         BIO_puts(arg, "======================================\n");
2161         OCSP_RESPONSE_free(rsp);
2162         return 1;
2163         }
2164
2165 #endif