Change default curve (for compatibility with a
[openssl.git] / apps / s_server.c
1 /* apps/s_server.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  * 
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  * 
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from 
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  * 
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  * 
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58 /* ====================================================================
59  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
60  *
61  * Redistribution and use in source and binary forms, with or without
62  * modification, are permitted provided that the following conditions
63  * are met:
64  *
65  * 1. Redistributions of source code must retain the above copyright
66  *    notice, this list of conditions and the following disclaimer. 
67  *
68  * 2. Redistributions in binary form must reproduce the above copyright
69  *    notice, this list of conditions and the following disclaimer in
70  *    the documentation and/or other materials provided with the
71  *    distribution.
72  *
73  * 3. All advertising materials mentioning features or use of this
74  *    software must display the following acknowledgment:
75  *    "This product includes software developed by the OpenSSL Project
76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77  *
78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79  *    endorse or promote products derived from this software without
80  *    prior written permission. For written permission, please contact
81  *    openssl-core@openssl.org.
82  *
83  * 5. Products derived from this software may not be called "OpenSSL"
84  *    nor may "OpenSSL" appear in their names without prior written
85  *    permission of the OpenSSL Project.
86  *
87  * 6. Redistributions of any form whatsoever must retain the following
88  *    acknowledgment:
89  *    "This product includes software developed by the OpenSSL Project
90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91  *
92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103  * OF THE POSSIBILITY OF SUCH DAMAGE.
104  * ====================================================================
105  *
106  * This product includes cryptographic software written by Eric Young
107  * (eay@cryptsoft.com).  This product includes software written by Tim
108  * Hudson (tjh@cryptsoft.com).
109  *
110  */
111 /* ====================================================================
112  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113  * ECC cipher suite support in OpenSSL originally developed by 
114  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115  */
116 /* ====================================================================
117  * Copyright 2005 Nokia. All rights reserved.
118  *
119  * The portions of the attached software ("Contribution") is developed by
120  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
121  * license.
122  *
123  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125  * support (see RFC 4279) to OpenSSL.
126  *
127  * No patent licenses or other rights except those expressly stated in
128  * the OpenSSL open source license shall be deemed granted or received
129  * expressly, by implication, estoppel, or otherwise.
130  *
131  * No assurances are provided by Nokia that the Contribution does not
132  * infringe the patent or other intellectual property rights of any third
133  * party or that the license provides you with all the necessary rights
134  * to make use of the Contribution.
135  *
136  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
140  * OTHERWISE.
141  */
142
143 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
144  * deprecated functions for openssl-internal code */
145 #ifdef OPENSSL_NO_DEPRECATED
146 #undef OPENSSL_NO_DEPRECATED
147 #endif
148
149 #include <assert.h>
150 #include <ctype.h>
151 #include <stdio.h>
152 #include <stdlib.h>
153 #include <string.h>
154
155 #include <openssl/e_os2.h>
156 #ifdef OPENSSL_NO_STDIO
157 #define APPS_WIN16
158 #endif
159
160 #if !defined(OPENSSL_SYS_NETWARE)  /* conflicts with winsock2 stuff on netware */
161 #include <sys/types.h>
162 #endif
163
164 /* With IPv6, it looks like Digital has mixed up the proper order of
165    recursive header file inclusion, resulting in the compiler complaining
166    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
167    is needed to have fileno() declared correctly...  So let's define u_int */
168 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
169 #define __U_INT
170 typedef unsigned int u_int;
171 #endif
172
173 #include <openssl/lhash.h>
174 #include <openssl/bn.h>
175 #define USE_SOCKETS
176 #include "apps.h"
177 #include <openssl/err.h>
178 #include <openssl/pem.h>
179 #include <openssl/x509.h>
180 #include <openssl/ssl.h>
181 #include <openssl/rand.h>
182 #ifndef OPENSSL_NO_DH
183 #include <openssl/dh.h>
184 #endif
185 #ifndef OPENSSL_NO_RSA
186 #include <openssl/rsa.h>
187 #endif
188 #include "s_apps.h"
189 #include "timeouts.h"
190
191 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
192 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
193 #undef FIONBIO
194 #endif
195
196 #ifndef OPENSSL_NO_RSA
197 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
198 #endif
199 static int sv_body(char *hostname, int s, unsigned char *context);
200 static int www_body(char *hostname, int s, unsigned char *context);
201 static void close_accept_socket(void );
202 static void sv_usage(void);
203 static int init_ssl_connection(SSL *s);
204 static void print_stats(BIO *bp,SSL_CTX *ctx);
205 static int generate_session_id(const SSL *ssl, unsigned char *id,
206                                 unsigned int *id_len);
207 #ifndef OPENSSL_NO_DH
208 static DH *load_dh_param(const char *dhfile);
209 static DH *get_dh512(void);
210 #endif
211
212 #ifdef MONOLITH
213 static void s_server_init(void);
214 #endif
215
216 #ifndef OPENSSL_NO_DH
217 static unsigned char dh512_p[]={
218         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
219         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
220         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
221         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
222         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
223         0x47,0x74,0xE8,0x33,
224         };
225 static unsigned char dh512_g[]={
226         0x02,
227         };
228
229 static DH *get_dh512(void)
230         {
231         DH *dh=NULL;
232
233         if ((dh=DH_new()) == NULL) return(NULL);
234         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
235         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
236         if ((dh->p == NULL) || (dh->g == NULL))
237                 return(NULL);
238         return(dh);
239         }
240 #endif
241
242
243 /* static int load_CA(SSL_CTX *ctx, char *file);*/
244
245 #undef BUFSIZZ
246 #define BUFSIZZ 16*1024
247 static int bufsize=BUFSIZZ;
248 static int accept_socket= -1;
249
250 #define TEST_CERT       "server.pem"
251 #ifndef OPENSSL_NO_TLSEXT
252 #define TEST_CERT2      "server2.pem"
253 #endif
254 #undef PROG
255 #define PROG            s_server_main
256
257 extern int verify_depth;
258
259 static char *cipher=NULL;
260 static int s_server_verify=SSL_VERIFY_NONE;
261 static int s_server_session_id_context = 1; /* anything will do */
262 static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
263 #ifndef OPENSSL_NO_TLSEXT
264 static const char *s_cert_file2=TEST_CERT2,*s_key_file2=NULL;
265 #endif
266 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
267 #ifdef FIONBIO
268 static int s_nbio=0;
269 #endif
270 static int s_nbio_test=0;
271 int s_crlf=0;
272 static SSL_CTX *ctx=NULL;
273 #ifndef OPENSSL_NO_TLSEXT
274 static SSL_CTX *ctx2=NULL;
275 #endif
276 static int www=0;
277
278 static BIO *bio_s_out=NULL;
279 static int s_debug=0;
280 static int s_msg=0;
281 static int s_quiet=0;
282
283 static int hack=0;
284 #ifndef OPENSSL_NO_ENGINE
285 static char *engine_id=NULL;
286 #endif
287 static const char *session_id_prefix=NULL;
288
289 static int enable_timeouts = 0;
290 static long socket_mtu;
291 static int cert_chain = 0;
292
293 #ifndef OPENSSL_NO_PSK
294 static char *psk_identity="Client_identity";
295 static char *psk_key=NULL; /* by default PSK is not used */
296
297 static unsigned int psk_server_cb(SSL *ssl, const char *identity,
298         unsigned char *psk, unsigned int max_psk_len)
299         {
300         unsigned int psk_len = 0;
301         int ret;
302         BIGNUM *bn = NULL;
303
304         if (s_debug)
305                 BIO_printf(bio_s_out,"psk_server_cb\n");
306         if (!identity)
307                 {
308                 BIO_printf(bio_err,"Error: client did not send PSK identity\n");
309                 goto out_err;
310                 }
311         if (s_debug)
312                 BIO_printf(bio_s_out,"identity_len=%d identity=%s\n",
313                         identity ? strlen(identity) : 0, identity);
314
315         /* here we could lookup the given identity e.g. from a database */
316         if (strcmp(identity, psk_identity) != 0)
317                 {
318                 BIO_printf(bio_s_out, "PSK error: client identity not found\n");
319                 goto out_err;
320                 }
321         if (s_debug)
322                 BIO_printf(bio_s_out, "PSK client identity found\n");
323
324         /* convert the PSK key to binary */
325         ret = BN_hex2bn(&bn, psk_key);
326         if (!ret)
327                 {
328                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
329                 if (bn)
330                         BN_free(bn);
331                 return 0;
332                 }
333         if (BN_num_bytes(bn) > (int)max_psk_len)
334                 {
335                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
336                         max_psk_len, BN_num_bytes(bn));
337                 BN_free(bn);
338                 return 0;
339                 }
340
341         ret = BN_bn2bin(bn, psk);
342         BN_free(bn);
343
344         if (ret < 0)
345                 goto out_err;
346         psk_len = (unsigned int)ret;
347
348         if (s_debug)
349                 BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len);
350         return psk_len;
351  out_err:
352         if (s_debug)
353                 BIO_printf(bio_err, "Error in PSK server callback\n");
354         return 0;
355         }
356 #endif
357
358 #ifdef MONOLITH
359 static void s_server_init(void)
360         {
361         accept_socket=-1;
362         cipher=NULL;
363         s_server_verify=SSL_VERIFY_NONE;
364         s_dcert_file=NULL;
365         s_dkey_file=NULL;
366         s_cert_file=TEST_CERT;
367         s_key_file=NULL;
368 #ifndef OPENSSL_NO_TLSEXT
369         s_cert_file2=TEST_CERT2;
370         s_key_file2=NULL;
371         ctx2=NULL;
372 #endif
373 #ifdef FIONBIO
374         s_nbio=0;
375 #endif
376         s_nbio_test=0;
377         ctx=NULL;
378         www=0;
379
380         bio_s_out=NULL;
381         s_debug=0;
382         s_msg=0;
383         s_quiet=0;
384         hack=0;
385 #ifndef OPENSSL_NO_ENGINE
386         engine_id=NULL;
387 #endif
388         }
389 #endif
390
391 static void sv_usage(void)
392         {
393         BIO_printf(bio_err,"usage: s_server [args ...]\n");
394         BIO_printf(bio_err,"\n");
395         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
396         BIO_printf(bio_err," -context arg  - set session ID context\n");
397         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
398         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
399         BIO_printf(bio_err," -cert arg     - certificate file to use\n");
400         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
401         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
402         BIO_printf(bio_err," -key arg      - Private Key file to use, in cert file if\n");
403         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
404         BIO_printf(bio_err," -keyform arg  - key format (PEM, DER or ENGINE) PEM default\n");
405         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
406         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
407         BIO_printf(bio_err," -dcertform x  - second certificate format (PEM or DER) PEM default\n");
408         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
409         BIO_printf(bio_err," -dkeyform arg - second key format (PEM, DER or ENGINE) PEM default\n");
410         BIO_printf(bio_err," -dpass arg    - second private key file pass phrase source\n");
411         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
412         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
413 #ifndef OPENSSL_NO_ECDH
414         BIO_printf(bio_err," -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n" \
415                            "                 Use \"openssl ecparam -list_curves\" for all names\n" \
416                            "                 (default is nistp256).\n");
417 #endif
418 #ifdef FIONBIO
419         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
420 #endif
421         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
422         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
423         BIO_printf(bio_err," -debug        - Print more output\n");
424         BIO_printf(bio_err," -msg          - Show protocol messages\n");
425         BIO_printf(bio_err," -state        - Print the SSL states\n");
426         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
427         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
428         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
429         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
430         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
431         BIO_printf(bio_err," -quiet        - No server output\n");
432         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
433 #ifndef OPENSSL_NO_PSK
434         BIO_printf(bio_err," -psk_hint arg - PSK identity hint to use\n");
435         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
436 #endif
437         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
438         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
439         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
440         BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");
441         BIO_printf(bio_err," -timeout      - Enable timeouts\n");
442         BIO_printf(bio_err," -mtu          - Set MTU\n");
443         BIO_printf(bio_err," -chain        - Read a certificate chain\n");
444         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
445         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
446         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
447 #ifndef OPENSSL_NO_DH
448         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
449 #endif
450 #ifndef OPENSSL_NO_ECDH
451         BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");
452 #endif
453         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
454         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
455         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
456         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
457         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
458 #ifndef OPENSSL_NO_ENGINE
459         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
460 #endif
461         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
462         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
463 #ifndef OPENSSL_NO_TLSEXT
464         BIO_printf(bio_err," -servername host - servername for HostName TLS extension\n");
465         BIO_printf(bio_err," -servername_fatal - on mismatch send fatal alert (default warning alert)\n");
466         BIO_printf(bio_err," -cert2 arg    - certificate file to use for servername\n");
467         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
468         BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
469         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
470 #endif
471         }
472
473 static int local_argc=0;
474 static char **local_argv;
475
476 #ifdef CHARSET_EBCDIC
477 static int ebcdic_new(BIO *bi);
478 static int ebcdic_free(BIO *a);
479 static int ebcdic_read(BIO *b, char *out, int outl);
480 static int ebcdic_write(BIO *b, const char *in, int inl);
481 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
482 static int ebcdic_gets(BIO *bp, char *buf, int size);
483 static int ebcdic_puts(BIO *bp, const char *str);
484
485 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
486 static BIO_METHOD methods_ebcdic=
487         {
488         BIO_TYPE_EBCDIC_FILTER,
489         "EBCDIC/ASCII filter",
490         ebcdic_write,
491         ebcdic_read,
492         ebcdic_puts,
493         ebcdic_gets,
494         ebcdic_ctrl,
495         ebcdic_new,
496         ebcdic_free,
497         };
498
499 typedef struct
500 {
501         size_t  alloced;
502         char    buff[1];
503 } EBCDIC_OUTBUFF;
504
505 BIO_METHOD *BIO_f_ebcdic_filter()
506 {
507         return(&methods_ebcdic);
508 }
509
510 static int ebcdic_new(BIO *bi)
511 {
512         EBCDIC_OUTBUFF *wbuf;
513
514         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
515         wbuf->alloced = 1024;
516         wbuf->buff[0] = '\0';
517
518         bi->ptr=(char *)wbuf;
519         bi->init=1;
520         bi->flags=0;
521         return(1);
522 }
523
524 static int ebcdic_free(BIO *a)
525 {
526         if (a == NULL) return(0);
527         if (a->ptr != NULL)
528                 OPENSSL_free(a->ptr);
529         a->ptr=NULL;
530         a->init=0;
531         a->flags=0;
532         return(1);
533 }
534         
535 static int ebcdic_read(BIO *b, char *out, int outl)
536 {
537         int ret=0;
538
539         if (out == NULL || outl == 0) return(0);
540         if (b->next_bio == NULL) return(0);
541
542         ret=BIO_read(b->next_bio,out,outl);
543         if (ret > 0)
544                 ascii2ebcdic(out,out,ret);
545         return(ret);
546 }
547
548 static int ebcdic_write(BIO *b, const char *in, int inl)
549 {
550         EBCDIC_OUTBUFF *wbuf;
551         int ret=0;
552         int num;
553         unsigned char n;
554
555         if ((in == NULL) || (inl <= 0)) return(0);
556         if (b->next_bio == NULL) return(0);
557
558         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
559
560         if (inl > (num = wbuf->alloced))
561         {
562                 num = num + num;  /* double the size */
563                 if (num < inl)
564                         num = inl;
565                 OPENSSL_free(wbuf);
566                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
567
568                 wbuf->alloced = num;
569                 wbuf->buff[0] = '\0';
570
571                 b->ptr=(char *)wbuf;
572         }
573
574         ebcdic2ascii(wbuf->buff, in, inl);
575
576         ret=BIO_write(b->next_bio, wbuf->buff, inl);
577
578         return(ret);
579 }
580
581 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
582 {
583         long ret;
584
585         if (b->next_bio == NULL) return(0);
586         switch (cmd)
587         {
588         case BIO_CTRL_DUP:
589                 ret=0L;
590                 break;
591         default:
592                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
593                 break;
594         }
595         return(ret);
596 }
597
598 static int ebcdic_gets(BIO *bp, char *buf, int size)
599 {
600         int i, ret=0;
601         if (bp->next_bio == NULL) return(0);
602 /*      return(BIO_gets(bp->next_bio,buf,size));*/
603         for (i=0; i<size-1; ++i)
604         {
605                 ret = ebcdic_read(bp,&buf[i],1);
606                 if (ret <= 0)
607                         break;
608                 else if (buf[i] == '\n')
609                 {
610                         ++i;
611                         break;
612                 }
613         }
614         if (i < size)
615                 buf[i] = '\0';
616         return (ret < 0 && i == 0) ? ret : i;
617 }
618
619 static int ebcdic_puts(BIO *bp, const char *str)
620 {
621         if (bp->next_bio == NULL) return(0);
622         return ebcdic_write(bp, str, strlen(str));
623 }
624 #endif
625
626 #ifndef OPENSSL_NO_TLSEXT
627
628 /* This is a context that we pass to callbacks */
629 typedef struct tlsextctx_st {
630    char * servername;
631    BIO * biodebug;
632    int extension_error;
633 } tlsextctx;
634
635
636 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
637         {
638         tlsextctx * p = (tlsextctx *) arg;
639         const char * servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
640         if (servername && p->biodebug) 
641                 BIO_printf(p->biodebug,"Hostname in TLS extension: \"%s\"\n",servername);
642         
643         if (!p->servername)
644                 return SSL_TLSEXT_ERR_NOACK;
645         
646         if (servername)
647                 {
648                 if (strcmp(servername,p->servername)) 
649                         return p->extension_error;
650                 if (ctx2)
651                         {
652                         BIO_printf(p->biodebug,"Swiching server context.\n");
653                         SSL_set_SSL_CTX(s,ctx2);
654                         }     
655                 }
656         return SSL_TLSEXT_ERR_OK;
657 }
658 #endif
659
660 int MAIN(int, char **);
661
662 int MAIN(int argc, char *argv[])
663         {
664         X509_STORE *store = NULL;
665         int vflags = 0;
666         short port=PORT;
667         char *CApath=NULL,*CAfile=NULL;
668         unsigned char *context = NULL;
669         char *dhfile = NULL;
670 #ifndef OPENSSL_NO_ECDH
671         char *named_curve = NULL;
672 #endif
673         int badop=0,bugs=0;
674         int ret=1;
675         int off=0;
676         int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;
677         int state=0;
678         const SSL_METHOD *meth=NULL;
679         int socket_type=SOCK_STREAM;
680 #ifndef OPENSSL_NO_ENGINE
681         ENGINE *e=NULL;
682 #endif
683         char *inrand=NULL;
684         int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
685         char *passarg = NULL, *pass = NULL;
686         char *dpassarg = NULL, *dpass = NULL;
687         int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
688         X509 *s_cert = NULL, *s_dcert = NULL;
689         EVP_PKEY *s_key = NULL, *s_dkey = NULL;
690 #ifndef OPENSSL_NO_TLSEXT
691         EVP_PKEY *s_key2 = NULL;
692         X509 *s_cert2 = NULL;
693 #endif
694
695 #ifndef OPENSSL_NO_TLSEXT
696         tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
697 #endif
698 #ifndef OPENSSL_NO_PSK
699         /* by default do not send a PSK identity hint */
700         static char *psk_identity_hint=NULL;
701 #endif
702 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
703         meth=SSLv23_server_method();
704 #elif !defined(OPENSSL_NO_SSL3)
705         meth=SSLv3_server_method();
706 #elif !defined(OPENSSL_NO_SSL2)
707         meth=SSLv2_server_method();
708 #endif
709
710         local_argc=argc;
711         local_argv=argv;
712
713         apps_startup();
714 #ifdef MONOLITH
715         s_server_init();
716 #endif
717
718         if (bio_err == NULL)
719                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
720
721         if (!load_config(bio_err, NULL))
722                 goto end;
723
724         verify_depth=0;
725 #ifdef FIONBIO
726         s_nbio=0;
727 #endif
728         s_nbio_test=0;
729
730         argc--;
731         argv++;
732
733         while (argc >= 1)
734                 {
735                 if      ((strcmp(*argv,"-port") == 0) ||
736                          (strcmp(*argv,"-accept") == 0))
737                         {
738                         if (--argc < 1) goto bad;
739                         if (!extract_port(*(++argv),&port))
740                                 goto bad;
741                         }
742                 else if (strcmp(*argv,"-verify") == 0)
743                         {
744                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
745                         if (--argc < 1) goto bad;
746                         verify_depth=atoi(*(++argv));
747                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
748                         }
749                 else if (strcmp(*argv,"-Verify") == 0)
750                         {
751                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
752                                 SSL_VERIFY_CLIENT_ONCE;
753                         if (--argc < 1) goto bad;
754                         verify_depth=atoi(*(++argv));
755                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
756                         }
757                 else if (strcmp(*argv,"-context") == 0)
758                         {
759                         if (--argc < 1) goto bad;
760                         context= (unsigned char *)*(++argv);
761                         }
762                 else if (strcmp(*argv,"-cert") == 0)
763                         {
764                         if (--argc < 1) goto bad;
765                         s_cert_file= *(++argv);
766                         }
767                 else if (strcmp(*argv,"-certform") == 0)
768                         {
769                         if (--argc < 1) goto bad;
770                         s_cert_format = str2fmt(*(++argv));
771                         }
772                 else if (strcmp(*argv,"-key") == 0)
773                         {
774                         if (--argc < 1) goto bad;
775                         s_key_file= *(++argv);
776                         }
777                 else if (strcmp(*argv,"-keyform") == 0)
778                         {
779                         if (--argc < 1) goto bad;
780                         s_key_format = str2fmt(*(++argv));
781                         }
782                 else if (strcmp(*argv,"-pass") == 0)
783                         {
784                         if (--argc < 1) goto bad;
785                         passarg = *(++argv);
786                         }
787                 else if (strcmp(*argv,"-dhparam") == 0)
788                         {
789                         if (--argc < 1) goto bad;
790                         dhfile = *(++argv);
791                         }
792 #ifndef OPENSSL_NO_ECDH         
793                 else if (strcmp(*argv,"-named_curve") == 0)
794                         {
795                         if (--argc < 1) goto bad;
796                         named_curve = *(++argv);
797                         }
798 #endif
799                 else if (strcmp(*argv,"-dcertform") == 0)
800                         {
801                         if (--argc < 1) goto bad;
802                         s_dcert_format = str2fmt(*(++argv));
803                         }
804                 else if (strcmp(*argv,"-dcert") == 0)
805                         {
806                         if (--argc < 1) goto bad;
807                         s_dcert_file= *(++argv);
808                         }
809                 else if (strcmp(*argv,"-dkeyform") == 0)
810                         {
811                         if (--argc < 1) goto bad;
812                         s_dkey_format = str2fmt(*(++argv));
813                         }
814                 else if (strcmp(*argv,"-dpass") == 0)
815                         {
816                         if (--argc < 1) goto bad;
817                         dpassarg = *(++argv);
818                         }
819                 else if (strcmp(*argv,"-dkey") == 0)
820                         {
821                         if (--argc < 1) goto bad;
822                         s_dkey_file= *(++argv);
823                         }
824                 else if (strcmp(*argv,"-nocert") == 0)
825                         {
826                         nocert=1;
827                         }
828                 else if (strcmp(*argv,"-CApath") == 0)
829                         {
830                         if (--argc < 1) goto bad;
831                         CApath= *(++argv);
832                         }
833                 else if (strcmp(*argv,"-crl_check") == 0)
834                         {
835                         vflags |= X509_V_FLAG_CRL_CHECK;
836                         }
837                 else if (strcmp(*argv,"-crl_check") == 0)
838                         {
839                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
840                         }
841                 else if (strcmp(*argv,"-serverpref") == 0)
842                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
843                 else if (strcmp(*argv,"-cipher") == 0)
844                         {
845                         if (--argc < 1) goto bad;
846                         cipher= *(++argv);
847                         }
848                 else if (strcmp(*argv,"-CAfile") == 0)
849                         {
850                         if (--argc < 1) goto bad;
851                         CAfile= *(++argv);
852                         }
853 #ifdef FIONBIO  
854                 else if (strcmp(*argv,"-nbio") == 0)
855                         { s_nbio=1; }
856 #endif
857                 else if (strcmp(*argv,"-nbio_test") == 0)
858                         {
859 #ifdef FIONBIO  
860                         s_nbio=1;
861 #endif
862                         s_nbio_test=1;
863                         }
864                 else if (strcmp(*argv,"-debug") == 0)
865                         { s_debug=1; }
866                 else if (strcmp(*argv,"-msg") == 0)
867                         { s_msg=1; }
868                 else if (strcmp(*argv,"-hack") == 0)
869                         { hack=1; }
870                 else if (strcmp(*argv,"-state") == 0)
871                         { state=1; }
872                 else if (strcmp(*argv,"-crlf") == 0)
873                         { s_crlf=1; }
874                 else if (strcmp(*argv,"-quiet") == 0)
875                         { s_quiet=1; }
876                 else if (strcmp(*argv,"-bugs") == 0)
877                         { bugs=1; }
878                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
879                         { no_tmp_rsa=1; }
880                 else if (strcmp(*argv,"-no_dhe") == 0)
881                         { no_dhe=1; }
882                 else if (strcmp(*argv,"-no_ecdhe") == 0)
883                         { no_ecdhe=1; }
884 #ifndef OPENSSL_NO_PSK
885                 else if (strcmp(*argv,"-psk_hint") == 0)
886                         {
887                         if (--argc < 1) goto bad;
888                         psk_identity_hint= *(++argv);
889                         }
890                 else if (strcmp(*argv,"-psk") == 0)
891                         {
892                         size_t i;
893
894                         if (--argc < 1) goto bad;
895                         psk_key=*(++argv);
896                         for (i=0; i<strlen(psk_key); i++)
897                                 {
898                                 if (isxdigit((int)psk_key[i]))
899                                         continue;
900                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
901                                 goto bad;
902                                 }
903                         }
904 #endif
905                 else if (strcmp(*argv,"-www") == 0)
906                         { www=1; }
907                 else if (strcmp(*argv,"-WWW") == 0)
908                         { www=2; }
909                 else if (strcmp(*argv,"-HTTP") == 0)
910                         { www=3; }
911                 else if (strcmp(*argv,"-no_ssl2") == 0)
912                         { off|=SSL_OP_NO_SSLv2; }
913                 else if (strcmp(*argv,"-no_ssl3") == 0)
914                         { off|=SSL_OP_NO_SSLv3; }
915                 else if (strcmp(*argv,"-no_tls1") == 0)
916                         { off|=SSL_OP_NO_TLSv1; }
917                 else if (strcmp(*argv,"-no_comp") == 0)
918                         { off|=SSL_OP_NO_COMPRESSION; }
919 #ifndef OPENSSL_NO_SSL2
920                 else if (strcmp(*argv,"-ssl2") == 0)
921                         { meth=SSLv2_server_method(); }
922 #endif
923 #ifndef OPENSSL_NO_SSL3
924                 else if (strcmp(*argv,"-ssl3") == 0)
925                         { meth=SSLv3_server_method(); }
926 #endif
927 #ifndef OPENSSL_NO_TLS1
928                 else if (strcmp(*argv,"-tls1") == 0)
929                         { meth=TLSv1_server_method(); }
930 #endif
931 #ifndef OPENSSL_NO_DTLS1
932                 else if (strcmp(*argv,"-dtls1") == 0)
933                         { 
934                         meth=DTLSv1_server_method();
935                         socket_type = SOCK_DGRAM;
936                         }
937                 else if (strcmp(*argv,"-timeout") == 0)
938                         enable_timeouts = 1;
939                 else if (strcmp(*argv,"-mtu") == 0)
940                         {
941                         if (--argc < 1) goto bad;
942                         socket_mtu = atol(*(++argv));
943                         }
944                 else if (strcmp(*argv, "-chain") == 0)
945                         cert_chain = 1;
946 #endif
947                 else if (strcmp(*argv, "-id_prefix") == 0)
948                         {
949                         if (--argc < 1) goto bad;
950                         session_id_prefix = *(++argv);
951                         }
952 #ifndef OPENSSL_NO_ENGINE
953                 else if (strcmp(*argv,"-engine") == 0)
954                         {
955                         if (--argc < 1) goto bad;
956                         engine_id= *(++argv);
957                         }
958 #endif
959                 else if (strcmp(*argv,"-rand") == 0)
960                         {
961                         if (--argc < 1) goto bad;
962                         inrand= *(++argv);
963                         }
964 #ifndef OPENSSL_NO_TLSEXT
965                 else if (strcmp(*argv,"-servername") == 0)
966                         {
967                         if (--argc < 1) goto bad;
968                         tlsextcbp.servername= *(++argv);
969                         }
970                 else if (strcmp(*argv,"-servername_fatal") == 0)
971                         { tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL; }
972                 else if (strcmp(*argv,"-cert2") == 0)
973                         {
974                         if (--argc < 1) goto bad;
975                         s_cert_file2= *(++argv);
976                         }
977                 else if (strcmp(*argv,"-key2") == 0)
978                         {
979                         if (--argc < 1) goto bad;
980                         s_key_file2= *(++argv);
981                         }
982 #endif
983                 else
984                         {
985                         BIO_printf(bio_err,"unknown option %s\n",*argv);
986                         badop=1;
987                         break;
988                         }
989                 argc--;
990                 argv++;
991                 }
992         if (badop)
993                 {
994 bad:
995                 sv_usage();
996                 goto end;
997                 }
998
999         SSL_load_error_strings();
1000         OpenSSL_add_ssl_algorithms();
1001
1002 #ifndef OPENSSL_NO_ENGINE
1003         e = setup_engine(bio_err, engine_id, 1);
1004 #endif
1005
1006         if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass))
1007                 {
1008                 BIO_printf(bio_err, "Error getting password\n");
1009                 goto end;
1010                 }
1011
1012
1013         if (s_key_file == NULL)
1014                 s_key_file = s_cert_file;
1015 #ifndef OPENSSL_NO_TLSEXT
1016         if (s_key_file2 == NULL)
1017                 s_key_file2 = s_cert_file2;
1018 #endif
1019
1020         if (nocert == 0)
1021                 {
1022                 s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,
1023                        "server certificate private key file");
1024                 if (!s_key)
1025                         {
1026                         ERR_print_errors(bio_err);
1027                         goto end;
1028                         }
1029
1030                 s_cert = load_cert(bio_err,s_cert_file,s_cert_format,
1031                         NULL, e, "server certificate file");
1032
1033                 if (!s_cert)
1034                         {
1035                         ERR_print_errors(bio_err);
1036                         goto end;
1037                         }
1038
1039 #ifndef OPENSSL_NO_TLSEXT
1040                 if (tlsextcbp.servername) 
1041                         {
1042                         s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
1043                                 "second server certificate private key file");
1044                         if (!s_key2)
1045                                 {
1046                                 ERR_print_errors(bio_err);
1047                                 goto end;
1048                                 }
1049                         
1050                         s_cert2 = load_cert(bio_err,s_cert_file2,s_cert_format,
1051                                 NULL, e, "second server certificate file");
1052                         
1053                         if (!s_cert2)
1054                                 {
1055                                 ERR_print_errors(bio_err);
1056                                 goto end;
1057                                 }
1058                         }
1059 #endif
1060                 }
1061
1062
1063         if (s_dcert_file)
1064                 {
1065
1066                 if (s_dkey_file == NULL)
1067                         s_dkey_file = s_dcert_file;
1068
1069                 s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,
1070                                 0, dpass, e,
1071                                "second certificate private key file");
1072                 if (!s_dkey)
1073                         {
1074                         ERR_print_errors(bio_err);
1075                         goto end;
1076                         }
1077
1078                 s_dcert = load_cert(bio_err,s_dcert_file,s_dcert_format,
1079                                 NULL, e, "second server certificate file");
1080
1081                 if (!s_dcert)
1082                         {
1083                         ERR_print_errors(bio_err);
1084                         goto end;
1085                         }
1086
1087                 }
1088
1089         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1090                 && !RAND_status())
1091                 {
1092                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1093                 }
1094         if (inrand != NULL)
1095                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1096                         app_RAND_load_files(inrand));
1097
1098         if (bio_s_out == NULL)
1099                 {
1100                 if (s_quiet && !s_debug && !s_msg)
1101                         {
1102                         bio_s_out=BIO_new(BIO_s_null());
1103                         }
1104                 else
1105                         {
1106                         if (bio_s_out == NULL)
1107                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1108                         }
1109                 }
1110
1111 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
1112         if (nocert)
1113 #endif
1114                 {
1115                 s_cert_file=NULL;
1116                 s_key_file=NULL;
1117                 s_dcert_file=NULL;
1118                 s_dkey_file=NULL;
1119 #ifndef OPENSSL_NO_TLSEXT
1120                 s_cert_file2=NULL;
1121                 s_key_file2=NULL;
1122 #endif
1123                 }
1124
1125         ctx=SSL_CTX_new(meth);
1126         if (ctx == NULL)
1127                 {
1128                 ERR_print_errors(bio_err);
1129                 goto end;
1130                 }
1131         if (session_id_prefix)
1132                 {
1133                 if(strlen(session_id_prefix) >= 32)
1134                         BIO_printf(bio_err,
1135 "warning: id_prefix is too long, only one new session will be possible\n");
1136                 else if(strlen(session_id_prefix) >= 16)
1137                         BIO_printf(bio_err,
1138 "warning: id_prefix is too long if you use SSLv2\n");
1139                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
1140                         {
1141                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
1142                         ERR_print_errors(bio_err);
1143                         goto end;
1144                         }
1145                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
1146                 }
1147         SSL_CTX_set_quiet_shutdown(ctx,1);
1148         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
1149         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1150         SSL_CTX_set_options(ctx,off);
1151         /* DTLS: partial reads end up discarding unread UDP bytes :-( 
1152          * Setting read ahead solves this problem.
1153          */
1154         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1155
1156         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1157
1158         SSL_CTX_sess_set_cache_size(ctx,128);
1159
1160 #if 0
1161         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
1162 #endif
1163
1164 #if 0
1165         if (s_cert_file == NULL)
1166                 {
1167                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
1168                 goto end;
1169                 }
1170 #endif
1171
1172         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1173                 (!SSL_CTX_set_default_verify_paths(ctx)))
1174                 {
1175                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
1176                 ERR_print_errors(bio_err);
1177                 /* goto end; */
1178                 }
1179         store = SSL_CTX_get_cert_store(ctx);
1180         X509_STORE_set_flags(store, vflags);
1181
1182 #ifndef OPENSSL_NO_TLSEXT
1183         if (s_cert2)
1184                 {
1185                 ctx2=SSL_CTX_new(meth);
1186                 if (ctx2 == NULL)
1187                         {
1188                         ERR_print_errors(bio_err);
1189                         goto end;
1190                         }
1191                 }
1192         
1193         if (ctx2)
1194                 {
1195                 BIO_printf(bio_s_out,"Setting secondary ctx parameters\n");
1196
1197                 if (session_id_prefix)
1198                         {
1199                         if(strlen(session_id_prefix) >= 32)
1200                                 BIO_printf(bio_err,
1201                                         "warning: id_prefix is too long, only one new session will be possible\n");
1202                         else if(strlen(session_id_prefix) >= 16)
1203                                 BIO_printf(bio_err,
1204                                         "warning: id_prefix is too long if you use SSLv2\n");
1205                         if(!SSL_CTX_set_generate_session_id(ctx2, generate_session_id))
1206                                 {
1207                                 BIO_printf(bio_err,"error setting 'id_prefix'\n");
1208                                 ERR_print_errors(bio_err);
1209                                 goto end;
1210                                 }
1211                         BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
1212                         }
1213                 SSL_CTX_set_quiet_shutdown(ctx2,1);
1214                 if (bugs) SSL_CTX_set_options(ctx2,SSL_OP_ALL);
1215                 if (hack) SSL_CTX_set_options(ctx2,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1216                 SSL_CTX_set_options(ctx2,off);
1217                 /* DTLS: partial reads end up discarding unread UDP bytes :-( 
1218                  * Setting read ahead solves this problem.
1219                  */
1220                 if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx2, 1);
1221
1222                 if (state) SSL_CTX_set_info_callback(ctx2,apps_ssl_info_callback);
1223
1224                 SSL_CTX_sess_set_cache_size(ctx2,128);
1225
1226                 if ((!SSL_CTX_load_verify_locations(ctx2,CAfile,CApath)) ||
1227                         (!SSL_CTX_set_default_verify_paths(ctx2)))
1228                         {
1229                         ERR_print_errors(bio_err);
1230                         }
1231                 store = SSL_CTX_get_cert_store(ctx2);
1232                 X509_STORE_set_flags(store, vflags);
1233                 }
1234 #endif 
1235
1236 #ifndef OPENSSL_NO_DH
1237         if (!no_dhe)
1238                 {
1239                 DH *dh=NULL;
1240
1241                 if (dhfile)
1242                         dh = load_dh_param(dhfile);
1243                 else if (s_cert_file)
1244                         dh = load_dh_param(s_cert_file);
1245
1246                 if (dh != NULL)
1247                         {
1248                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
1249                         }
1250                 else
1251                         {
1252                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
1253                         dh=get_dh512();
1254                         }
1255                 (void)BIO_flush(bio_s_out);
1256
1257                 SSL_CTX_set_tmp_dh(ctx,dh);
1258 #ifndef OPENSSL_NO_TLSEXT
1259                 if (ctx2)
1260                         {
1261                         if (!dhfile)
1262                                 { 
1263                                 DH *dh2=load_dh_param(s_cert_file2);
1264                                 if (dh2 != NULL)
1265                                         {
1266                                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
1267                                         (void)BIO_flush(bio_s_out);
1268
1269                                         DH_free(dh);
1270                                         dh = dh2;
1271                                         }
1272                                 }
1273                         SSL_CTX_set_tmp_dh(ctx2,dh);
1274                         }
1275 #endif
1276                 DH_free(dh);
1277                 }
1278 #endif
1279
1280 #ifndef OPENSSL_NO_ECDH
1281         if (!no_ecdhe)
1282                 {
1283                 EC_KEY *ecdh=NULL;
1284
1285                 if (named_curve)
1286                         {
1287                         int nid = OBJ_sn2nid(named_curve);
1288
1289                         if (nid == 0)
1290                                 {
1291                                 BIO_printf(bio_err, "unknown curve name (%s)\n", 
1292                                         named_curve);
1293                                 goto end;
1294                                 }
1295                         ecdh = EC_KEY_new_by_curve_name(nid);
1296                         if (ecdh == NULL)
1297                                 {
1298                                 BIO_printf(bio_err, "unable to create curve (%s)\n", 
1299                                         named_curve);
1300                                 goto end;
1301                                 }
1302                         }
1303
1304                 if (ecdh != NULL)
1305                         {
1306                         BIO_printf(bio_s_out,"Setting temp ECDH parameters\n");
1307                         }
1308                 else
1309                         {
1310                         BIO_printf(bio_s_out,"Using default temp ECDH parameters\n");
1311                         ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
1312                         if (ecdh == NULL) 
1313                                 {
1314                                 BIO_printf(bio_err, "unable to create curve (nistp256)\n");
1315                                 goto end;
1316                                 }
1317                         }
1318                 (void)BIO_flush(bio_s_out);
1319
1320                 SSL_CTX_set_tmp_ecdh(ctx,ecdh);
1321 #ifndef OPENSSL_NO_TLSEXT
1322                 if (ctx2) 
1323                         SSL_CTX_set_tmp_ecdh(ctx2,ecdh);
1324 #endif
1325                 EC_KEY_free(ecdh);
1326                 }
1327 #endif
1328         
1329         if (!set_cert_key_stuff(ctx,s_cert,s_key))
1330                 goto end;
1331 #ifndef OPENSSL_NO_TLSEXT
1332         if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2))
1333                 goto end; 
1334 #endif
1335         if (s_dcert != NULL)
1336                 {
1337                 if (!set_cert_key_stuff(ctx,s_dcert,s_dkey))
1338                         goto end;
1339                 }
1340
1341 #ifndef OPENSSL_NO_RSA
1342 #if 1
1343         if (!no_tmp_rsa)
1344                 {
1345                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
1346 #ifndef OPENSSL_NO_TLSEXT
1347                 if (ctx2) 
1348                         SSL_CTX_set_tmp_rsa_callback(ctx2,tmp_rsa_cb);
1349 #endif          
1350                 }
1351 #else
1352         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
1353                 {
1354                 RSA *rsa;
1355
1356                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
1357                 BIO_flush(bio_s_out);
1358
1359                 rsa=RSA_generate_key(512,RSA_F4,NULL);
1360
1361                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
1362                         {
1363                         ERR_print_errors(bio_err);
1364                         goto end;
1365                         }
1366 #ifndef OPENSSL_NO_TLSEXT
1367                         if (ctx2)
1368                                 {
1369                                 if (!SSL_CTX_set_tmp_rsa(ctx2,rsa))
1370                                         {
1371                                         ERR_print_errors(bio_err);
1372                                         goto end;
1373                                         }
1374                                 }
1375 #endif
1376                 RSA_free(rsa);
1377                 BIO_printf(bio_s_out,"\n");
1378                 }
1379 #endif
1380 #endif
1381
1382 #ifndef OPENSSL_NO_PSK
1383         if (psk_key != NULL)
1384                 {
1385                 if (s_debug)
1386                         BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
1387                 SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
1388                 }
1389
1390         if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint))
1391                 {
1392                 BIO_printf(bio_err,"error setting PSK identity hint to context\n");
1393                 ERR_print_errors(bio_err);
1394                 goto end;
1395                 }
1396 #endif
1397
1398         if (cipher != NULL)
1399                 {
1400                 if(!SSL_CTX_set_cipher_list(ctx,cipher))
1401                         {
1402                         BIO_printf(bio_err,"error setting cipher list\n");
1403                         ERR_print_errors(bio_err);
1404                         goto end;
1405                         }
1406 #ifndef OPENSSL_NO_TLSEXT
1407                 if (ctx2 && !SSL_CTX_set_cipher_list(ctx2,cipher))
1408                         {
1409                         BIO_printf(bio_err,"error setting cipher list\n");
1410                         ERR_print_errors(bio_err);
1411                         goto end;
1412                         }
1413 #endif
1414                 }
1415         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
1416         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
1417                 sizeof s_server_session_id_context);
1418
1419 #ifndef OPENSSL_NO_TLSEXT
1420         if (ctx2)
1421                 {
1422                 SSL_CTX_set_verify(ctx2,s_server_verify,verify_callback);
1423                 SSL_CTX_set_session_id_context(ctx2,(void*)&s_server_session_id_context,
1424                         sizeof s_server_session_id_context);
1425
1426                 tlsextcbp.biodebug = bio_s_out;
1427                 SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
1428                 SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
1429                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1430                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1431                 }
1432 #endif
1433
1434         if (CAfile != NULL)
1435                 {
1436                 SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
1437 #ifndef OPENSSL_NO_TLSEXT
1438                 if (ctx2) 
1439                         SSL_CTX_set_client_CA_list(ctx2,SSL_load_client_CA_file(CAfile));
1440 #endif
1441                 }
1442
1443         BIO_printf(bio_s_out,"ACCEPT\n");
1444         if (www)
1445                 do_server(port,socket_type,&accept_socket,www_body, context);
1446         else
1447                 do_server(port,socket_type,&accept_socket,sv_body, context);
1448         print_stats(bio_s_out,ctx);
1449         ret=0;
1450 end:
1451         if (ctx != NULL) SSL_CTX_free(ctx);
1452         if (s_cert)
1453                 X509_free(s_cert);
1454         if (s_dcert)
1455                 X509_free(s_dcert);
1456         if (s_key)
1457                 EVP_PKEY_free(s_key);
1458         if (s_dkey)
1459                 EVP_PKEY_free(s_dkey);
1460         if (pass)
1461                 OPENSSL_free(pass);
1462         if (dpass)
1463                 OPENSSL_free(dpass);
1464 #ifndef OPENSSL_NO_TLSEXT
1465         if (ctx2 != NULL) SSL_CTX_free(ctx2);
1466         if (s_cert2)
1467                 X509_free(s_cert2);
1468         if (s_key2)
1469                 EVP_PKEY_free(s_key2);
1470 #endif
1471         if (bio_s_out != NULL)
1472                 {
1473         BIO_free(bio_s_out);
1474                 bio_s_out=NULL;
1475                 }
1476         apps_shutdown();
1477         OPENSSL_EXIT(ret);
1478         }
1479
1480 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
1481         {
1482         BIO_printf(bio,"%4ld items in the session cache\n",
1483                 SSL_CTX_sess_number(ssl_ctx));
1484         BIO_printf(bio,"%4ld client connects (SSL_connect())\n",
1485                 SSL_CTX_sess_connect(ssl_ctx));
1486         BIO_printf(bio,"%4ld client renegotiates (SSL_connect())\n",
1487                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
1488         BIO_printf(bio,"%4ld client connects that finished\n",
1489                 SSL_CTX_sess_connect_good(ssl_ctx));
1490         BIO_printf(bio,"%4ld server accepts (SSL_accept())\n",
1491                 SSL_CTX_sess_accept(ssl_ctx));
1492         BIO_printf(bio,"%4ld server renegotiates (SSL_accept())\n",
1493                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
1494         BIO_printf(bio,"%4ld server accepts that finished\n",
1495                 SSL_CTX_sess_accept_good(ssl_ctx));
1496         BIO_printf(bio,"%4ld session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
1497         BIO_printf(bio,"%4ld session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
1498         BIO_printf(bio,"%4ld session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
1499         BIO_printf(bio,"%4ld callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
1500         BIO_printf(bio,"%4ld cache full overflows (%ld allowed)\n",
1501                 SSL_CTX_sess_cache_full(ssl_ctx),
1502                 SSL_CTX_sess_get_cache_size(ssl_ctx));
1503         }
1504
1505 static int sv_body(char *hostname, int s, unsigned char *context)
1506         {
1507         char *buf=NULL;
1508         fd_set readfds;
1509         int ret=1,width;
1510         int k,i;
1511         unsigned long l;
1512         SSL *con=NULL;
1513         BIO *sbio;
1514 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1515         struct timeval tv;
1516 #endif
1517
1518         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
1519                 {
1520                 BIO_printf(bio_err,"out of memory\n");
1521                 goto err;
1522                 }
1523 #ifdef FIONBIO  
1524         if (s_nbio)
1525                 {
1526                 unsigned long sl=1;
1527
1528                 if (!s_quiet)
1529                         BIO_printf(bio_err,"turning on non blocking io\n");
1530                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1531                         ERR_print_errors(bio_err);
1532                 }
1533 #endif
1534
1535         if (con == NULL) {
1536                 con=SSL_new(ctx);
1537 #ifndef OPENSSL_NO_KRB5
1538                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1539                         {
1540                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE,
1541                                                                 KRB5SVC);
1542                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB,
1543                                                                 KRB5KEYTAB);
1544                         }
1545 #endif  /* OPENSSL_NO_KRB5 */
1546                 if(context)
1547                       SSL_set_session_id_context(con, context,
1548                                                  strlen((char *)context));
1549         }
1550         SSL_clear(con);
1551
1552         if (SSL_version(con) == DTLS1_VERSION)
1553                 {
1554                 struct timeval timeout;
1555
1556                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1557
1558                 if (enable_timeouts)
1559                         {
1560                         timeout.tv_sec = 0;
1561                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1562                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1563                         
1564                         timeout.tv_sec = 0;
1565                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1566                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1567                         }
1568
1569                 if (socket_mtu > 0)
1570                         {
1571                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1572                         SSL_set_mtu(con, socket_mtu);
1573                         }
1574                 else
1575                         /* want to do MTU discovery */
1576                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1577
1578         /* turn on cookie exchange */
1579         SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
1580                 }
1581         else
1582                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1583
1584         if (s_nbio_test)
1585                 {
1586                 BIO *test;
1587
1588                 test=BIO_new(BIO_f_nbio_test());
1589                 sbio=BIO_push(test,sbio);
1590                 }
1591         SSL_set_bio(con,sbio,sbio);
1592         SSL_set_accept_state(con);
1593         /* SSL_set_fd(con,s); */
1594
1595         if (s_debug)
1596                 {
1597                 con->debug=1;
1598                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
1599                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1600                 }
1601         if (s_msg)
1602                 {
1603                 SSL_set_msg_callback(con, msg_cb);
1604                 SSL_set_msg_callback_arg(con, bio_s_out);
1605                 }
1606
1607         width=s+1;
1608         for (;;)
1609                 {
1610                 int read_from_terminal;
1611                 int read_from_sslcon;
1612
1613                 read_from_terminal = 0;
1614                 read_from_sslcon = SSL_pending(con);
1615
1616                 if (!read_from_sslcon)
1617                         {
1618                         FD_ZERO(&readfds);
1619 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
1620                         FD_SET(fileno(stdin),&readfds);
1621 #endif
1622                         FD_SET(s,&readfds);
1623                         /* Note: under VMS with SOCKETSHR the second parameter is
1624                          * currently of type (int *) whereas under other systems
1625                          * it is (void *) if you don't have a cast it will choke
1626                          * the compiler: if you do have a cast then you can either
1627                          * go for (int *) or (void *).
1628                          */
1629 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1630                         /* Under DOS (non-djgpp) and Windows we can't select on stdin: only
1631                          * on sockets. As a workaround we timeout the select every
1632                          * second and check for any keypress. In a proper Windows
1633                          * application we wouldn't do this because it is inefficient.
1634                          */
1635                         tv.tv_sec = 1;
1636                         tv.tv_usec = 0;
1637                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
1638                         if((i < 0) || (!i && !_kbhit() ) )continue;
1639                         if(_kbhit())
1640                                 read_from_terminal = 1;
1641 #else
1642                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
1643                         if (i <= 0) continue;
1644                         if (FD_ISSET(fileno(stdin),&readfds))
1645                                 read_from_terminal = 1;
1646 #endif
1647                         if (FD_ISSET(s,&readfds))
1648                                 read_from_sslcon = 1;
1649                         }
1650                 if (read_from_terminal)
1651                         {
1652                         if (s_crlf)
1653                                 {
1654                                 int j, lf_num;
1655
1656                                 i=raw_read_stdin(buf, bufsize/2);
1657                                 lf_num = 0;
1658                                 /* both loops are skipped when i <= 0 */
1659                                 for (j = 0; j < i; j++)
1660                                         if (buf[j] == '\n')
1661                                                 lf_num++;
1662                                 for (j = i-1; j >= 0; j--)
1663                                         {
1664                                         buf[j+lf_num] = buf[j];
1665                                         if (buf[j] == '\n')
1666                                                 {
1667                                                 lf_num--;
1668                                                 i++;
1669                                                 buf[j+lf_num] = '\r';
1670                                                 }
1671                                         }
1672                                 assert(lf_num == 0);
1673                                 }
1674                         else
1675                                 i=raw_read_stdin(buf,bufsize);
1676                         if (!s_quiet)
1677                                 {
1678                                 if ((i <= 0) || (buf[0] == 'Q'))
1679                                         {
1680                                         BIO_printf(bio_s_out,"DONE\n");
1681                                         SHUTDOWN(s);
1682                                         close_accept_socket();
1683                                         ret= -11;
1684                                         goto err;
1685                                         }
1686                                 if ((i <= 0) || (buf[0] == 'q'))
1687                                         {
1688                                         BIO_printf(bio_s_out,"DONE\n");
1689                                         if (SSL_version(con) != DTLS1_VERSION)
1690                         SHUTDOWN(s);
1691         /*                              close_accept_socket();
1692                                         ret= -11;*/
1693                                         goto err;
1694                                         }
1695
1696                                 if ((buf[0] == 'r') && 
1697                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1698                                         {
1699                                         SSL_renegotiate(con);
1700                                         i=SSL_do_handshake(con);
1701                                         printf("SSL_do_handshake -> %d\n",i);
1702                                         i=0; /*13; */
1703                                         continue;
1704                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
1705                                         }
1706                                 if ((buf[0] == 'R') &&
1707                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1708                                         {
1709                                         SSL_set_verify(con,
1710                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1711                                         SSL_renegotiate(con);
1712                                         i=SSL_do_handshake(con);
1713                                         printf("SSL_do_handshake -> %d\n",i);
1714                                         i=0; /* 13; */
1715                                         continue;
1716                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1717                                         }
1718                                 if (buf[0] == 'P')
1719                                         {
1720                                         static const char *str="Lets print some clear text\n";
1721                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
1722                                         }
1723                                 if (buf[0] == 'S')
1724                                         {
1725                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1726                                         }
1727                                 }
1728 #ifdef CHARSET_EBCDIC
1729                         ebcdic2ascii(buf,buf,i);
1730 #endif
1731                         l=k=0;
1732                         for (;;)
1733                                 {
1734                                 /* should do a select for the write */
1735 #ifdef RENEG
1736 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1737 #endif
1738                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
1739                                 switch (SSL_get_error(con,k))
1740                                         {
1741                                 case SSL_ERROR_NONE:
1742                                         break;
1743                                 case SSL_ERROR_WANT_WRITE:
1744                                 case SSL_ERROR_WANT_READ:
1745                                 case SSL_ERROR_WANT_X509_LOOKUP:
1746                                         BIO_printf(bio_s_out,"Write BLOCK\n");
1747                                         break;
1748                                 case SSL_ERROR_SYSCALL:
1749                                 case SSL_ERROR_SSL:
1750                                         BIO_printf(bio_s_out,"ERROR\n");
1751                                         ERR_print_errors(bio_err);
1752                                         ret=1;
1753                                         goto err;
1754                                         /* break; */
1755                                 case SSL_ERROR_ZERO_RETURN:
1756                                         BIO_printf(bio_s_out,"DONE\n");
1757                                         ret=1;
1758                                         goto err;
1759                                         }
1760                                 l+=k;
1761                                 i-=k;
1762                                 if (i <= 0) break;
1763                                 }
1764                         }
1765                 if (read_from_sslcon)
1766                         {
1767                         if (!SSL_is_init_finished(con))
1768                                 {
1769                                 i=init_ssl_connection(con);
1770                                 
1771                                 if (i < 0)
1772                                         {
1773                                         ret=0;
1774                                         goto err;
1775                                         }
1776                                 else if (i == 0)
1777                                         {
1778                                         ret=1;
1779                                         goto err;
1780                                         }
1781                                 }
1782                         else
1783                                 {
1784 again:  
1785                                 i=SSL_read(con,(char *)buf,bufsize);
1786                                 switch (SSL_get_error(con,i))
1787                                         {
1788                                 case SSL_ERROR_NONE:
1789 #ifdef CHARSET_EBCDIC
1790                                         ascii2ebcdic(buf,buf,i);
1791 #endif
1792                                         raw_write_stdout(buf,
1793                                                 (unsigned int)i);
1794                                         if (SSL_pending(con)) goto again;
1795                                         break;
1796                                 case SSL_ERROR_WANT_WRITE:
1797                                 case SSL_ERROR_WANT_READ:
1798                                 case SSL_ERROR_WANT_X509_LOOKUP:
1799                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1800                                         break;
1801                                 case SSL_ERROR_SYSCALL:
1802                                 case SSL_ERROR_SSL:
1803                                         BIO_printf(bio_s_out,"ERROR\n");
1804                                         ERR_print_errors(bio_err);
1805                                         ret=1;
1806                                         goto err;
1807                                 case SSL_ERROR_ZERO_RETURN:
1808                                         BIO_printf(bio_s_out,"DONE\n");
1809                                         ret=1;
1810                                         goto err;
1811                                         }
1812                                 }
1813                         }
1814                 }
1815 err:
1816         if (con != NULL)
1817                 {
1818                 BIO_printf(bio_s_out,"shutting down SSL\n");
1819 #if 1
1820                 SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1821 #else
1822                 SSL_shutdown(con);
1823 #endif
1824                 SSL_free(con);
1825                 }
1826         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1827         if (buf != NULL)
1828                 {
1829                 OPENSSL_cleanse(buf,bufsize);
1830                 OPENSSL_free(buf);
1831                 }
1832         if (ret >= 0)
1833                 BIO_printf(bio_s_out,"ACCEPT\n");
1834         return(ret);
1835         }
1836
1837 static void close_accept_socket(void)
1838         {
1839         BIO_printf(bio_err,"shutdown accept socket\n");
1840         if (accept_socket >= 0)
1841                 {
1842                 SHUTDOWN2(accept_socket);
1843                 }
1844         }
1845
1846 static int init_ssl_connection(SSL *con)
1847         {
1848         int i;
1849         const char *str;
1850         X509 *peer;
1851         long verify_error;
1852         MS_STATIC char buf[BUFSIZ];
1853
1854         if ((i=SSL_accept(con)) <= 0)
1855                 {
1856                 if (BIO_sock_should_retry(i))
1857                         {
1858                         BIO_printf(bio_s_out,"DELAY\n");
1859                         return(1);
1860                         }
1861
1862                 BIO_printf(bio_err,"ERROR\n");
1863                 verify_error=SSL_get_verify_result(con);
1864                 if (verify_error != X509_V_OK)
1865                         {
1866                         BIO_printf(bio_err,"verify error:%s\n",
1867                                 X509_verify_cert_error_string(verify_error));
1868                         }
1869                 else
1870                         ERR_print_errors(bio_err);
1871                 return(0);
1872                 }
1873
1874         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1875
1876         peer=SSL_get_peer_certificate(con);
1877         if (peer != NULL)
1878                 {
1879                 BIO_printf(bio_s_out,"Client certificate\n");
1880                 PEM_write_bio_X509(bio_s_out,peer);
1881                 X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);
1882                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1883                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);
1884                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1885                 X509_free(peer);
1886                 }
1887
1888         if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)
1889                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1890         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1891         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1892         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1893         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1894                 TLS1_FLAGS_TLS_PADDING_BUG)
1895                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1896 #ifndef OPENSSL_NO_KRB5
1897         if (con->kssl_ctx->client_princ != NULL)
1898                 {
1899                 BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",
1900                         con->kssl_ctx->client_princ);
1901                 }
1902 #endif /* OPENSSL_NO_KRB5 */
1903         return(1);
1904         }
1905
1906 #ifndef OPENSSL_NO_DH
1907 static DH *load_dh_param(const char *dhfile)
1908         {
1909         DH *ret=NULL;
1910         BIO *bio;
1911
1912         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1913                 goto err;
1914         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1915 err:
1916         if (bio != NULL) BIO_free(bio);
1917         return(ret);
1918         }
1919 #endif
1920
1921 #if 0
1922 static int load_CA(SSL_CTX *ctx, char *file)
1923         {
1924         FILE *in;
1925         X509 *x=NULL;
1926
1927         if ((in=fopen(file,"r")) == NULL)
1928                 return(0);
1929
1930         for (;;)
1931                 {
1932                 if (PEM_read_X509(in,&x,NULL) == NULL)
1933                         break;
1934                 SSL_CTX_add_client_CA(ctx,x);
1935                 }
1936         if (x != NULL) X509_free(x);
1937         fclose(in);
1938         return(1);
1939         }
1940 #endif
1941
1942 static int www_body(char *hostname, int s, unsigned char *context)
1943         {
1944         char *buf=NULL;
1945         int ret=1;
1946         int i,j,k,blank,dot;
1947         SSL *con;
1948         SSL_CIPHER *c;
1949         BIO *io,*ssl_bio,*sbio;
1950         long total_bytes;
1951
1952         buf=OPENSSL_malloc(bufsize);
1953         if (buf == NULL) return(0);
1954         io=BIO_new(BIO_f_buffer());
1955         ssl_bio=BIO_new(BIO_f_ssl());
1956         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1957
1958 #ifdef FIONBIO  
1959         if (s_nbio)
1960                 {
1961                 unsigned long sl=1;
1962
1963                 if (!s_quiet)
1964                         BIO_printf(bio_err,"turning on non blocking io\n");
1965                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1966                         ERR_print_errors(bio_err);
1967                 }
1968 #endif
1969
1970         /* lets make the output buffer a reasonable size */
1971         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1972
1973         if ((con=SSL_new(ctx)) == NULL) goto err;
1974 #ifndef OPENSSL_NO_KRB5
1975         if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1976                 {
1977                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
1978                 kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
1979                 }
1980 #endif  /* OPENSSL_NO_KRB5 */
1981         if(context) SSL_set_session_id_context(con, context,
1982                                                strlen((char *)context));
1983
1984         sbio=BIO_new_socket(s,BIO_NOCLOSE);
1985         if (s_nbio_test)
1986                 {
1987                 BIO *test;
1988
1989                 test=BIO_new(BIO_f_nbio_test());
1990                 sbio=BIO_push(test,sbio);
1991                 }
1992         SSL_set_bio(con,sbio,sbio);
1993         SSL_set_accept_state(con);
1994
1995         /* SSL_set_fd(con,s); */
1996         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1997         BIO_push(io,ssl_bio);
1998 #ifdef CHARSET_EBCDIC
1999         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
2000 #endif
2001
2002         if (s_debug)
2003                 {
2004                 con->debug=1;
2005                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
2006                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
2007                 }
2008         if (s_msg)
2009                 {
2010                 SSL_set_msg_callback(con, msg_cb);
2011                 SSL_set_msg_callback_arg(con, bio_s_out);
2012                 }
2013
2014         blank=0;
2015         for (;;)
2016                 {
2017                 if (hack)
2018                         {
2019                         i=SSL_accept(con);
2020
2021                         switch (SSL_get_error(con,i))
2022                                 {
2023                         case SSL_ERROR_NONE:
2024                                 break;
2025                         case SSL_ERROR_WANT_WRITE:
2026                         case SSL_ERROR_WANT_READ:
2027                         case SSL_ERROR_WANT_X509_LOOKUP:
2028                                 continue;
2029                         case SSL_ERROR_SYSCALL:
2030                         case SSL_ERROR_SSL:
2031                         case SSL_ERROR_ZERO_RETURN:
2032                                 ret=1;
2033                                 goto err;
2034                                 /* break; */
2035                                 }
2036
2037                         SSL_renegotiate(con);
2038                         SSL_write(con,NULL,0);
2039                         }
2040
2041                 i=BIO_gets(io,buf,bufsize-1);
2042                 if (i < 0) /* error */
2043                         {
2044                         if (!BIO_should_retry(io))
2045                                 {
2046                                 if (!s_quiet)
2047                                         ERR_print_errors(bio_err);
2048                                 goto err;
2049                                 }
2050                         else
2051                                 {
2052                                 BIO_printf(bio_s_out,"read R BLOCK\n");
2053 #if defined(OPENSSL_SYS_NETWARE)
2054             delay(1000);
2055 #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
2056                                 sleep(1);
2057 #endif
2058                                 continue;
2059                                 }
2060                         }
2061                 else if (i == 0) /* end of input */
2062                         {
2063                         ret=1;
2064                         goto end;
2065                         }
2066
2067                 /* else we have data */
2068                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
2069                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
2070                         {
2071                         char *p;
2072                         X509 *peer;
2073                         STACK_OF(SSL_CIPHER) *sk;
2074                         static const char *space="                          ";
2075
2076                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
2077                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
2078                         BIO_puts(io,"<pre>\n");
2079 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
2080                         BIO_puts(io,"\n");
2081                         for (i=0; i<local_argc; i++)
2082                                 {
2083                                 BIO_puts(io,local_argv[i]);
2084                                 BIO_write(io," ",1);
2085                                 }
2086                         BIO_puts(io,"\n");
2087
2088                         /* The following is evil and should not really
2089                          * be done */
2090                         BIO_printf(io,"Ciphers supported in s_server binary\n");
2091                         sk=SSL_get_ciphers(con);
2092                         j=sk_SSL_CIPHER_num(sk);
2093                         for (i=0; i<j; i++)
2094                                 {
2095                                 c=sk_SSL_CIPHER_value(sk,i);
2096                                 BIO_printf(io,"%-11s:%-25s",
2097                                         SSL_CIPHER_get_version(c),
2098                                         SSL_CIPHER_get_name(c));
2099                                 if ((((i+1)%2) == 0) && (i+1 != j))
2100                                         BIO_puts(io,"\n");
2101                                 }
2102                         BIO_puts(io,"\n");
2103                         p=SSL_get_shared_ciphers(con,buf,bufsize);
2104                         if (p != NULL)
2105                                 {
2106                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
2107                                 j=i=0;
2108                                 while (*p)
2109                                         {
2110                                         if (*p == ':')
2111                                                 {
2112                                                 BIO_write(io,space,26-j);
2113                                                 i++;
2114                                                 j=0;
2115                                                 BIO_write(io,((i%3)?" ":"\n"),1);
2116                                                 }
2117                                         else
2118                                                 {
2119                                                 BIO_write(io,p,1);
2120                                                 j++;
2121                                                 }
2122                                         p++;
2123                                         }
2124                                 BIO_puts(io,"\n");
2125                                 }
2126                         BIO_printf(io,((con->hit)
2127                                 ?"---\nReused, "
2128                                 :"---\nNew, "));
2129                         c=SSL_get_current_cipher(con);
2130                         BIO_printf(io,"%s, Cipher is %s\n",
2131                                 SSL_CIPHER_get_version(c),
2132                                 SSL_CIPHER_get_name(c));
2133                         SSL_SESSION_print(io,SSL_get_session(con));
2134                         BIO_printf(io,"---\n");
2135                         print_stats(io,SSL_get_SSL_CTX(con));
2136                         BIO_printf(io,"---\n");
2137                         peer=SSL_get_peer_certificate(con);
2138                         if (peer != NULL)
2139                                 {
2140                                 BIO_printf(io,"Client certificate\n");
2141                                 X509_print(io,peer);
2142                                 PEM_write_bio_X509(io,peer);
2143                                 }
2144                         else
2145                                 BIO_puts(io,"no client certificate available\n");
2146                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
2147                         break;
2148                         }
2149                 else if ((www == 2 || www == 3)
2150                          && (strncmp("GET /",buf,5) == 0))
2151                         {
2152                         BIO *file;
2153                         char *p,*e;
2154                         static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
2155
2156                         /* skip the '/' */
2157                         p= &(buf[5]);
2158
2159                         dot = 1;
2160                         for (e=p; *e != '\0'; e++)
2161                                 {
2162                                 if (e[0] == ' ')
2163                                         break;
2164
2165                                 switch (dot)
2166                                         {
2167                                 case 1:
2168                                         dot = (e[0] == '.') ? 2 : 0;
2169                                         break;
2170                                 case 2:
2171                                         dot = (e[0] == '.') ? 3 : 0;
2172                                         break;
2173                                 case 3:
2174                                         dot = (e[0] == '/') ? -1 : 0;
2175                                         break;
2176                                         }
2177                                 if (dot == 0)
2178                                         dot = (e[0] == '/') ? 1 : 0;
2179                                 }
2180                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
2181
2182                         if (*e == '\0')
2183                                 {
2184                                 BIO_puts(io,text);
2185                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
2186                                 break;
2187                                 }
2188                         *e='\0';
2189
2190                         if (dot)
2191                                 {
2192                                 BIO_puts(io,text);
2193                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
2194                                 break;
2195                                 }
2196
2197                         if (*p == '/')
2198                                 {
2199                                 BIO_puts(io,text);
2200                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
2201                                 break;
2202                                 }
2203
2204 #if 0
2205                         /* append if a directory lookup */
2206                         if (e[-1] == '/')
2207                                 strcat(p,"index.html");
2208 #endif
2209
2210                         /* if a directory, do the index thang */
2211                         if (app_isdir(p)>0)
2212                                 {
2213 #if 0 /* must check buffer size */
2214                                 strcat(p,"/index.html");
2215 #else
2216                                 BIO_puts(io,text);
2217                                 BIO_printf(io,"'%s' is a directory\r\n",p);
2218                                 break;
2219 #endif
2220                                 }
2221
2222                         if ((file=BIO_new_file(p,"r")) == NULL)
2223                                 {
2224                                 BIO_puts(io,text);
2225                                 BIO_printf(io,"Error opening '%s'\r\n",p);
2226                                 ERR_print_errors(io);
2227                                 break;
2228                                 }
2229
2230                         if (!s_quiet)
2231                                 BIO_printf(bio_err,"FILE:%s\n",p);
2232
2233                         if (www == 2)
2234                                 {
2235                                 i=strlen(p);
2236                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
2237                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
2238                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
2239                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
2240                                 else
2241                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
2242                                 }
2243                         /* send the file */
2244                         total_bytes=0;
2245                         for (;;)
2246                                 {
2247                                 i=BIO_read(file,buf,bufsize);
2248                                 if (i <= 0) break;
2249
2250 #ifdef RENEG
2251                                 total_bytes+=i;
2252                                 fprintf(stderr,"%d\n",i);
2253                                 if (total_bytes > 3*1024)
2254                                         {
2255                                         total_bytes=0;
2256                                         fprintf(stderr,"RENEGOTIATE\n");
2257                                         SSL_renegotiate(con);
2258                                         }
2259 #endif
2260
2261                                 for (j=0; j<i; )
2262                                         {
2263 #ifdef RENEG
2264 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
2265 #endif
2266                                         k=BIO_write(io,&(buf[j]),i-j);
2267                                         if (k <= 0)
2268                                                 {
2269                                                 if (!BIO_should_retry(io))
2270                                                         goto write_error;
2271                                                 else
2272                                                         {
2273                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
2274                                                         }
2275                                                 }
2276                                         else
2277                                                 {
2278                                                 j+=k;
2279                                                 }
2280                                         }
2281                                 }
2282 write_error:
2283                         BIO_free(file);
2284                         break;
2285                         }
2286                 }
2287
2288         for (;;)
2289                 {
2290                 i=(int)BIO_flush(io);
2291                 if (i <= 0)
2292                         {
2293                         if (!BIO_should_retry(io))
2294                                 break;
2295                         }
2296                 else
2297                         break;
2298                 }
2299 end:
2300 #if 1
2301         /* make sure we re-use sessions */
2302         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
2303 #else
2304         /* This kills performance */
2305 /*      SSL_shutdown(con); A shutdown gets sent in the
2306  *      BIO_free_all(io) procession */
2307 #endif
2308
2309 err:
2310
2311         if (ret >= 0)
2312                 BIO_printf(bio_s_out,"ACCEPT\n");
2313
2314         if (buf != NULL) OPENSSL_free(buf);
2315         if (io != NULL) BIO_free_all(io);
2316 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
2317         return(ret);
2318         }
2319
2320 #ifndef OPENSSL_NO_RSA
2321 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
2322         {
2323         BIGNUM *bn = NULL;
2324         static RSA *rsa_tmp=NULL;
2325
2326         if (!rsa_tmp && ((bn = BN_new()) == NULL))
2327                 BIO_printf(bio_err,"Allocation error in generating RSA key\n");
2328         if (!rsa_tmp && bn)
2329                 {
2330                 if (!s_quiet)
2331                         {
2332                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
2333                         (void)BIO_flush(bio_err);
2334                         }
2335                 if(!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
2336                                 !RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL))
2337                         {
2338                         if(rsa_tmp) RSA_free(rsa_tmp);
2339                         rsa_tmp = NULL;
2340                         }
2341                 if (!s_quiet)
2342                         {
2343                         BIO_printf(bio_err,"\n");
2344                         (void)BIO_flush(bio_err);
2345                         }
2346                 BN_free(bn);
2347                 }
2348         return(rsa_tmp);
2349         }
2350 #endif
2351
2352 #define MAX_SESSION_ID_ATTEMPTS 10
2353 static int generate_session_id(const SSL *ssl, unsigned char *id,
2354                                 unsigned int *id_len)
2355         {
2356         unsigned int count = 0;
2357         do      {
2358                 RAND_pseudo_bytes(id, *id_len);
2359                 /* Prefix the session_id with the required prefix. NB: If our
2360                  * prefix is too long, clip it - but there will be worse effects
2361                  * anyway, eg. the server could only possibly create 1 session
2362                  * ID (ie. the prefix!) so all future session negotiations will
2363                  * fail due to conflicts. */
2364                 memcpy(id, session_id_prefix,
2365                         (strlen(session_id_prefix) < *id_len) ?
2366                         strlen(session_id_prefix) : *id_len);
2367                 }
2368         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
2369                 (++count < MAX_SESSION_ID_ATTEMPTS));
2370         if(count >= MAX_SESSION_ID_ATTEMPTS)
2371                 return 0;
2372         return 1;
2373         }