Only use DSA-functions if available.
[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) 1998-2001 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 #include <assert.h>
113 #include <stdio.h>
114 #include <stdlib.h>
115 #include <string.h>
116 #include <sys/types.h>
117 #include <sys/stat.h>
118 #include <openssl/e_os2.h>
119 #ifdef OPENSSL_NO_STDIO
120 #define APPS_WIN16
121 #endif
122
123 /* With IPv6, it looks like Digital has mixed up the proper order of
124    recursive header file inclusion, resulting in the compiler complaining
125    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
126    is needed to have fileno() declared correctly...  So let's define u_int */
127 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
128 #define __U_INT
129 typedef unsigned int u_int;
130 #endif
131
132 #include <openssl/lhash.h>
133 #include <openssl/bn.h>
134 #define USE_SOCKETS
135 #include "apps.h"
136 #include <openssl/err.h>
137 #include <openssl/pem.h>
138 #include <openssl/x509.h>
139 #include <openssl/ssl.h>
140 #include <openssl/rand.h>
141 #include "s_apps.h"
142
143 #ifdef OPENSSL_SYS_WINDOWS
144 #include <conio.h>
145 #endif
146
147 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
148 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
149 #undef FIONBIO
150 #endif
151
152 #ifndef OPENSSL_NO_RSA
153 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
154 #endif
155 static int sv_body(char *hostname, int s, unsigned char *context);
156 static int www_body(char *hostname, int s, unsigned char *context);
157 static void close_accept_socket(void );
158 static void sv_usage(void);
159 static int init_ssl_connection(SSL *s);
160 static void print_stats(BIO *bp,SSL_CTX *ctx);
161 static int generate_session_id(const SSL *ssl, unsigned char *id,
162                                 unsigned int *id_len);
163 #ifndef OPENSSL_NO_DH
164 static DH *load_dh_param(char *dhfile);
165 static DH *get_dh512(void);
166 #endif
167 #ifdef MONOLITH
168 static void s_server_init(void);
169 #endif
170
171 #ifndef S_ISDIR
172 # if defined(_S_IFMT) && defined(_S_IFDIR)
173 #  define S_ISDIR(a)    (((a) & _S_IFMT) == _S_IFDIR)
174 # else
175 #  define S_ISDIR(a)    (((a) & S_IFMT) == S_IFDIR)
176 # endif
177 #endif
178
179 #ifndef OPENSSL_NO_DH
180 static unsigned char dh512_p[]={
181         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
182         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
183         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
184         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
185         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
186         0x47,0x74,0xE8,0x33,
187         };
188 static unsigned char dh512_g[]={
189         0x02,
190         };
191
192 static DH *get_dh512(void)
193         {
194         DH *dh=NULL;
195
196         if ((dh=DH_new()) == NULL) return(NULL);
197         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
198         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
199         if ((dh->p == NULL) || (dh->g == NULL))
200                 return(NULL);
201         return(dh);
202         }
203 #endif
204
205 /* static int load_CA(SSL_CTX *ctx, char *file);*/
206
207 #undef BUFSIZZ
208 #define BUFSIZZ 16*1024
209 static int bufsize=BUFSIZZ;
210 static int accept_socket= -1;
211
212 #define TEST_CERT       "server.pem"
213 #undef PROG
214 #define PROG            s_server_main
215
216 extern int verify_depth;
217
218 static char *cipher=NULL;
219 static int s_server_verify=SSL_VERIFY_NONE;
220 static int s_server_session_id_context = 1; /* anything will do */
221 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
222 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
223 #ifdef FIONBIO
224 static int s_nbio=0;
225 #endif
226 static int s_nbio_test=0;
227 int s_crlf=0;
228 static SSL_CTX *ctx=NULL;
229 static int www=0;
230
231 static BIO *bio_s_out=NULL;
232 static int s_debug=0;
233 static int s_msg=0;
234 static int s_quiet=0;
235
236 static int hack=0;
237 static char *engine_id=NULL;
238 static const char *session_id_prefix=NULL;
239
240 #ifdef MONOLITH
241 static void s_server_init(void)
242         {
243         accept_socket=-1;
244         cipher=NULL;
245         s_server_verify=SSL_VERIFY_NONE;
246         s_dcert_file=NULL;
247         s_dkey_file=NULL;
248         s_cert_file=TEST_CERT;
249         s_key_file=NULL;
250 #ifdef FIONBIO
251         s_nbio=0;
252 #endif
253         s_nbio_test=0;
254         ctx=NULL;
255         www=0;
256
257         bio_s_out=NULL;
258         s_debug=0;
259         s_msg=0;
260         s_quiet=0;
261         hack=0;
262         engine_id=NULL;
263         }
264 #endif
265
266 static void sv_usage(void)
267         {
268         BIO_printf(bio_err,"usage: s_server [args ...]\n");
269         BIO_printf(bio_err,"\n");
270         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
271         BIO_printf(bio_err," -context arg  - set session ID context\n");
272         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
273         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
274         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
275         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
276         BIO_printf(bio_err," -key arg      - Private Key file to use, PEM format assumed, in cert file if\n");
277         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
278         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
279         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
280         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
281         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
282 #ifdef FIONBIO
283         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
284 #endif
285         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
286         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
287         BIO_printf(bio_err," -debug        - Print more output\n");
288         BIO_printf(bio_err," -msg          - Show protocol messages\n");
289         BIO_printf(bio_err," -state        - Print the SSL states\n");
290         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
291         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
292         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
293         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
294         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
295         BIO_printf(bio_err," -quiet        - No server output\n");
296         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
297         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
298         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
299         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
300         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
301         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
302         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
303 #ifndef OPENSSL_NO_DH
304         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
305 #endif
306         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
307         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
308         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
309         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
310         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
311         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
312         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
313         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
314         }
315
316 static int local_argc=0;
317 static char **local_argv;
318
319 #ifdef CHARSET_EBCDIC
320 static int ebcdic_new(BIO *bi);
321 static int ebcdic_free(BIO *a);
322 static int ebcdic_read(BIO *b, char *out, int outl);
323 static int ebcdic_write(BIO *b, char *in, int inl);
324 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr);
325 static int ebcdic_gets(BIO *bp, char *buf, int size);
326 static int ebcdic_puts(BIO *bp, char *str);
327
328 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
329 static BIO_METHOD methods_ebcdic=
330         {
331         BIO_TYPE_EBCDIC_FILTER,
332         "EBCDIC/ASCII filter",
333         ebcdic_write,
334         ebcdic_read,
335         ebcdic_puts,
336         ebcdic_gets,
337         ebcdic_ctrl,
338         ebcdic_new,
339         ebcdic_free,
340         };
341
342 typedef struct
343 {
344         size_t  alloced;
345         char    buff[1];
346 } EBCDIC_OUTBUFF;
347
348 BIO_METHOD *BIO_f_ebcdic_filter()
349 {
350         return(&methods_ebcdic);
351 }
352
353 static int ebcdic_new(BIO *bi)
354 {
355         EBCDIC_OUTBUFF *wbuf;
356
357         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
358         wbuf->alloced = 1024;
359         wbuf->buff[0] = '\0';
360
361         bi->ptr=(char *)wbuf;
362         bi->init=1;
363         bi->flags=0;
364         return(1);
365 }
366
367 static int ebcdic_free(BIO *a)
368 {
369         if (a == NULL) return(0);
370         if (a->ptr != NULL)
371                 OPENSSL_free(a->ptr);
372         a->ptr=NULL;
373         a->init=0;
374         a->flags=0;
375         return(1);
376 }
377         
378 static int ebcdic_read(BIO *b, char *out, int outl)
379 {
380         int ret=0;
381
382         if (out == NULL || outl == 0) return(0);
383         if (b->next_bio == NULL) return(0);
384
385         ret=BIO_read(b->next_bio,out,outl);
386         if (ret > 0)
387                 ascii2ebcdic(out,out,ret);
388         return(ret);
389 }
390
391 static int ebcdic_write(BIO *b, char *in, int inl)
392 {
393         EBCDIC_OUTBUFF *wbuf;
394         int ret=0;
395         int num;
396         unsigned char n;
397
398         if ((in == NULL) || (inl <= 0)) return(0);
399         if (b->next_bio == NULL) return(0);
400
401         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
402
403         if (inl > (num = wbuf->alloced))
404         {
405                 num = num + num;  /* double the size */
406                 if (num < inl)
407                         num = inl;
408                 OPENSSL_free(wbuf);
409                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
410
411                 wbuf->alloced = num;
412                 wbuf->buff[0] = '\0';
413
414                 b->ptr=(char *)wbuf;
415         }
416
417         ebcdic2ascii(wbuf->buff, in, inl);
418
419         ret=BIO_write(b->next_bio, wbuf->buff, inl);
420
421         return(ret);
422 }
423
424 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr)
425 {
426         long ret;
427
428         if (b->next_bio == NULL) return(0);
429         switch (cmd)
430         {
431         case BIO_CTRL_DUP:
432                 ret=0L;
433                 break;
434         default:
435                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
436                 break;
437         }
438         return(ret);
439 }
440
441 static int ebcdic_gets(BIO *bp, char *buf, int size)
442 {
443         int i, ret;
444         if (bp->next_bio == NULL) return(0);
445 /*      return(BIO_gets(bp->next_bio,buf,size));*/
446         for (i=0; i<size-1; ++i)
447         {
448                 ret = ebcdic_read(bp,&buf[i],1);
449                 if (ret <= 0)
450                         break;
451                 else if (buf[i] == '\n')
452                 {
453                         ++i;
454                         break;
455                 }
456         }
457         if (i < size)
458                 buf[i] = '\0';
459         return (ret < 0 && i == 0) ? ret : i;
460 }
461
462 static int ebcdic_puts(BIO *bp, char *str)
463 {
464         if (bp->next_bio == NULL) return(0);
465         return ebcdic_write(bp, str, strlen(str));
466 }
467 #endif
468
469 int MAIN(int, char **);
470
471 int MAIN(int argc, char *argv[])
472         {
473         X509_STORE *store = NULL;
474         int vflags = 0;
475         short port=PORT;
476         char *CApath=NULL,*CAfile=NULL;
477         char *context = NULL;
478         char *dhfile = NULL;
479         int badop=0,bugs=0;
480         int ret=1;
481         int off=0;
482         int no_tmp_rsa=0,no_dhe=0,nocert=0;
483         int state=0;
484         SSL_METHOD *meth=NULL;
485         ENGINE *e=NULL;
486         char *inrand=NULL;
487
488 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
489         meth=SSLv23_server_method();
490 #elif !defined(OPENSSL_NO_SSL3)
491         meth=SSLv3_server_method();
492 #elif !defined(OPENSSL_NO_SSL2)
493         meth=SSLv2_server_method();
494 #endif
495
496         local_argc=argc;
497         local_argv=argv;
498
499         apps_startup();
500 #ifdef MONOLITH
501         s_server_init();
502 #endif
503
504         if (bio_err == NULL)
505                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
506
507         if (!load_config(bio_err, NULL))
508                 goto end;
509
510         verify_depth=0;
511 #ifdef FIONBIO
512         s_nbio=0;
513 #endif
514         s_nbio_test=0;
515
516         argc--;
517         argv++;
518
519         while (argc >= 1)
520                 {
521                 if      ((strcmp(*argv,"-port") == 0) ||
522                          (strcmp(*argv,"-accept") == 0))
523                         {
524                         if (--argc < 1) goto bad;
525                         if (!extract_port(*(++argv),&port))
526                                 goto bad;
527                         }
528                 else if (strcmp(*argv,"-verify") == 0)
529                         {
530                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
531                         if (--argc < 1) goto bad;
532                         verify_depth=atoi(*(++argv));
533                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
534                         }
535                 else if (strcmp(*argv,"-Verify") == 0)
536                         {
537                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
538                                 SSL_VERIFY_CLIENT_ONCE;
539                         if (--argc < 1) goto bad;
540                         verify_depth=atoi(*(++argv));
541                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
542                         }
543                 else if (strcmp(*argv,"-context") == 0)
544                         {
545                         if (--argc < 1) goto bad;
546                         context= *(++argv);
547                         }
548                 else if (strcmp(*argv,"-cert") == 0)
549                         {
550                         if (--argc < 1) goto bad;
551                         s_cert_file= *(++argv);
552                         }
553                 else if (strcmp(*argv,"-key") == 0)
554                         {
555                         if (--argc < 1) goto bad;
556                         s_key_file= *(++argv);
557                         }
558                 else if (strcmp(*argv,"-dhparam") == 0)
559                         {
560                         if (--argc < 1) goto bad;
561                         dhfile = *(++argv);
562                         }
563                 else if (strcmp(*argv,"-dcert") == 0)
564                         {
565                         if (--argc < 1) goto bad;
566                         s_dcert_file= *(++argv);
567                         }
568                 else if (strcmp(*argv,"-dkey") == 0)
569                         {
570                         if (--argc < 1) goto bad;
571                         s_dkey_file= *(++argv);
572                         }
573                 else if (strcmp(*argv,"-nocert") == 0)
574                         {
575                         nocert=1;
576                         }
577                 else if (strcmp(*argv,"-CApath") == 0)
578                         {
579                         if (--argc < 1) goto bad;
580                         CApath= *(++argv);
581                         }
582                 else if (strcmp(*argv,"-crl_check") == 0)
583                         {
584                         vflags |= X509_V_FLAG_CRL_CHECK;
585                         }
586                 else if (strcmp(*argv,"-crl_check") == 0)
587                         {
588                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
589                         }
590                 else if (strcmp(*argv,"-serverpref") == 0)
591                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
592                 else if (strcmp(*argv,"-cipher") == 0)
593                         {
594                         if (--argc < 1) goto bad;
595                         cipher= *(++argv);
596                         }
597                 else if (strcmp(*argv,"-CAfile") == 0)
598                         {
599                         if (--argc < 1) goto bad;
600                         CAfile= *(++argv);
601                         }
602 #ifdef FIONBIO  
603                 else if (strcmp(*argv,"-nbio") == 0)
604                         { s_nbio=1; }
605 #endif
606                 else if (strcmp(*argv,"-nbio_test") == 0)
607                         {
608 #ifdef FIONBIO  
609                         s_nbio=1;
610 #endif
611                         s_nbio_test=1;
612                         }
613                 else if (strcmp(*argv,"-debug") == 0)
614                         { s_debug=1; }
615                 else if (strcmp(*argv,"-msg") == 0)
616                         { s_msg=1; }
617                 else if (strcmp(*argv,"-hack") == 0)
618                         { hack=1; }
619                 else if (strcmp(*argv,"-state") == 0)
620                         { state=1; }
621                 else if (strcmp(*argv,"-crlf") == 0)
622                         { s_crlf=1; }
623                 else if (strcmp(*argv,"-quiet") == 0)
624                         { s_quiet=1; }
625                 else if (strcmp(*argv,"-bugs") == 0)
626                         { bugs=1; }
627                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
628                         { no_tmp_rsa=1; }
629                 else if (strcmp(*argv,"-no_dhe") == 0)
630                         { no_dhe=1; }
631                 else if (strcmp(*argv,"-www") == 0)
632                         { www=1; }
633                 else if (strcmp(*argv,"-WWW") == 0)
634                         { www=2; }
635                 else if (strcmp(*argv,"-HTTP") == 0)
636                         { www=3; }
637                 else if (strcmp(*argv,"-no_ssl2") == 0)
638                         { off|=SSL_OP_NO_SSLv2; }
639                 else if (strcmp(*argv,"-no_ssl3") == 0)
640                         { off|=SSL_OP_NO_SSLv3; }
641                 else if (strcmp(*argv,"-no_tls1") == 0)
642                         { off|=SSL_OP_NO_TLSv1; }
643 #ifndef OPENSSL_NO_SSL2
644                 else if (strcmp(*argv,"-ssl2") == 0)
645                         { meth=SSLv2_server_method(); }
646 #endif
647 #ifndef OPENSSL_NO_SSL3
648                 else if (strcmp(*argv,"-ssl3") == 0)
649                         { meth=SSLv3_server_method(); }
650 #endif
651 #ifndef OPENSSL_NO_TLS1
652                 else if (strcmp(*argv,"-tls1") == 0)
653                         { meth=TLSv1_server_method(); }
654 #endif
655                 else if (strcmp(*argv, "-id_prefix") == 0)
656                         {
657                         if (--argc < 1) goto bad;
658                         session_id_prefix = *(++argv);
659                         }
660                 else if (strcmp(*argv,"-engine") == 0)
661                         {
662                         if (--argc < 1) goto bad;
663                         engine_id= *(++argv);
664                         }
665                 else if (strcmp(*argv,"-rand") == 0)
666                         {
667                         if (--argc < 1) goto bad;
668                         inrand= *(++argv);
669                         }
670                 else
671                         {
672                         BIO_printf(bio_err,"unknown option %s\n",*argv);
673                         badop=1;
674                         break;
675                         }
676                 argc--;
677                 argv++;
678                 }
679         if (badop)
680                 {
681 bad:
682                 sv_usage();
683                 goto end;
684                 }
685
686         SSL_load_error_strings();
687         OpenSSL_add_ssl_algorithms();
688
689         e = setup_engine(bio_err, engine_id, 1);
690
691         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
692                 && !RAND_status())
693                 {
694                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
695                 }
696         if (inrand != NULL)
697                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
698                         app_RAND_load_files(inrand));
699
700         if (bio_s_out == NULL)
701                 {
702                 if (s_quiet && !s_debug && !s_msg)
703                         {
704                         bio_s_out=BIO_new(BIO_s_null());
705                         }
706                 else
707                         {
708                         if (bio_s_out == NULL)
709                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
710                         }
711                 }
712
713 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
714         if (nocert)
715 #endif
716                 {
717                 s_cert_file=NULL;
718                 s_key_file=NULL;
719                 s_dcert_file=NULL;
720                 s_dkey_file=NULL;
721                 }
722
723         ctx=SSL_CTX_new(meth);
724         if (ctx == NULL)
725                 {
726                 ERR_print_errors(bio_err);
727                 goto end;
728                 }
729         if (session_id_prefix)
730                 {
731                 if(strlen(session_id_prefix) >= 32)
732                         BIO_printf(bio_err,
733 "warning: id_prefix is too long, only one new session will be possible\n");
734                 else if(strlen(session_id_prefix) >= 16)
735                         BIO_printf(bio_err,
736 "warning: id_prefix is too long if you use SSLv2\n");
737                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
738                         {
739                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
740                         ERR_print_errors(bio_err);
741                         goto end;
742                         }
743                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
744                 }
745         SSL_CTX_set_quiet_shutdown(ctx,1);
746         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
747         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
748         SSL_CTX_set_options(ctx,off);
749
750         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
751
752         SSL_CTX_sess_set_cache_size(ctx,128);
753
754 #if 0
755         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
756 #endif
757
758 #if 0
759         if (s_cert_file == NULL)
760                 {
761                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
762                 goto end;
763                 }
764 #endif
765
766         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
767                 (!SSL_CTX_set_default_verify_paths(ctx)))
768                 {
769                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
770                 ERR_print_errors(bio_err);
771                 /* goto end; */
772                 }
773         store = SSL_CTX_get_cert_store(ctx);
774         X509_STORE_set_flags(store, vflags);
775
776 #ifndef OPENSSL_NO_DH
777         if (!no_dhe)
778                 {
779                 DH *dh=NULL;
780
781                 if (dhfile)
782                         dh = load_dh_param(dhfile);
783                 else if (s_cert_file)
784                         dh = load_dh_param(s_cert_file);
785
786                 if (dh != NULL)
787                         {
788                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
789                         }
790                 else
791                         {
792                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
793                         dh=get_dh512();
794                         }
795                 (void)BIO_flush(bio_s_out);
796
797                 SSL_CTX_set_tmp_dh(ctx,dh);
798                 DH_free(dh);
799                 }
800 #endif
801         
802         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
803                 goto end;
804         if (s_dcert_file != NULL)
805                 {
806                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
807                         goto end;
808                 }
809
810 #ifndef OPENSSL_NO_RSA
811 #if 1
812         if (!no_tmp_rsa)
813                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
814 #else
815         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
816                 {
817                 RSA *rsa;
818
819                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
820                 BIO_flush(bio_s_out);
821
822                 rsa=RSA_generate_key(512,RSA_F4,NULL);
823
824                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
825                         {
826                         ERR_print_errors(bio_err);
827                         goto end;
828                         }
829                 RSA_free(rsa);
830                 BIO_printf(bio_s_out,"\n");
831                 }
832 #endif
833 #endif
834
835         if (cipher != NULL)
836                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
837                 BIO_printf(bio_err,"error setting cipher list\n");
838                 ERR_print_errors(bio_err);
839                 goto end;
840         }
841         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
842         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
843                 sizeof s_server_session_id_context);
844
845         if (CAfile != NULL)
846             SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
847
848         BIO_printf(bio_s_out,"ACCEPT\n");
849         if (www)
850                 do_server(port,&accept_socket,www_body, context);
851         else
852                 do_server(port,&accept_socket,sv_body, context);
853         print_stats(bio_s_out,ctx);
854         ret=0;
855 end:
856         if (ctx != NULL) SSL_CTX_free(ctx);
857         if (bio_s_out != NULL)
858                 {
859                 BIO_free(bio_s_out);
860                 bio_s_out=NULL;
861                 }
862         apps_shutdown();
863         EXIT(ret);
864         }
865
866 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
867         {
868         BIO_printf(bio,"%4ld items in the session cache\n",
869                 SSL_CTX_sess_number(ssl_ctx));
870         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
871                 SSL_CTX_sess_connect(ssl_ctx));
872         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
873                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
874         BIO_printf(bio,"%4d client connects that finished\n",
875                 SSL_CTX_sess_connect_good(ssl_ctx));
876         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
877                 SSL_CTX_sess_accept(ssl_ctx));
878         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
879                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
880         BIO_printf(bio,"%4d server accepts that finished\n",
881                 SSL_CTX_sess_accept_good(ssl_ctx));
882         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
883         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
884         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
885         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
886         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
887                 SSL_CTX_sess_cache_full(ssl_ctx),
888                 SSL_CTX_sess_get_cache_size(ssl_ctx));
889         }
890
891 static int sv_body(char *hostname, int s, unsigned char *context)
892         {
893         char *buf=NULL;
894         fd_set readfds;
895         int ret=1,width;
896         int k,i;
897         unsigned long l;
898         SSL *con=NULL;
899         BIO *sbio;
900 #ifdef OPENSSL_SYS_WINDOWS
901         struct timeval tv;
902 #endif
903
904         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
905                 {
906                 BIO_printf(bio_err,"out of memory\n");
907                 goto err;
908                 }
909 #ifdef FIONBIO  
910         if (s_nbio)
911                 {
912                 unsigned long sl=1;
913
914                 if (!s_quiet)
915                         BIO_printf(bio_err,"turning on non blocking io\n");
916                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
917                         ERR_print_errors(bio_err);
918                 }
919 #endif
920
921         if (con == NULL) {
922                 con=SSL_new(ctx);
923 #ifndef OPENSSL_NO_KRB5
924                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
925                         {
926                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE,
927                                                                 KRB5SVC);
928                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB,
929                                                                 KRB5KEYTAB);
930                         }
931 #endif  /* OPENSSL_NO_KRB5 */
932                 if(context)
933                       SSL_set_session_id_context(con, context,
934                                                  strlen((char *)context));
935         }
936         SSL_clear(con);
937
938         sbio=BIO_new_socket(s,BIO_NOCLOSE);
939         if (s_nbio_test)
940                 {
941                 BIO *test;
942
943                 test=BIO_new(BIO_f_nbio_test());
944                 sbio=BIO_push(test,sbio);
945                 }
946         SSL_set_bio(con,sbio,sbio);
947         SSL_set_accept_state(con);
948         /* SSL_set_fd(con,s); */
949
950         if (s_debug)
951                 {
952                 con->debug=1;
953                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
954                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
955                 }
956         if (s_msg)
957                 {
958                 SSL_set_msg_callback(con, msg_cb);
959                 SSL_set_msg_callback_arg(con, bio_s_out);
960                 }
961
962         width=s+1;
963         for (;;)
964                 {
965                 int read_from_terminal;
966                 int read_from_sslcon;
967
968                 read_from_terminal = 0;
969                 read_from_sslcon = SSL_pending(con);
970
971                 if (!read_from_sslcon)
972                         {
973                         FD_ZERO(&readfds);
974 #ifndef OPENSSL_SYS_WINDOWS
975                         FD_SET(fileno(stdin),&readfds);
976 #endif
977                         FD_SET(s,&readfds);
978                         /* Note: under VMS with SOCKETSHR the second parameter is
979                          * currently of type (int *) whereas under other systems
980                          * it is (void *) if you don't have a cast it will choke
981                          * the compiler: if you do have a cast then you can either
982                          * go for (int *) or (void *).
983                          */
984 #ifdef OPENSSL_SYS_WINDOWS
985                         /* Under Windows we can't select on stdin: only
986                          * on sockets. As a workaround we timeout the select every
987                          * second and check for any keypress. In a proper Windows
988                          * application we wouldn't do this because it is inefficient.
989                          */
990                         tv.tv_sec = 1;
991                         tv.tv_usec = 0;
992                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
993                         if((i < 0) || (!i && !_kbhit() ) )continue;
994                         if(_kbhit())
995                                 read_from_terminal = 1;
996 #else
997                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
998                         if (i <= 0) continue;
999                         if (FD_ISSET(fileno(stdin),&readfds))
1000                                 read_from_terminal = 1;
1001 #endif
1002                         if (FD_ISSET(s,&readfds))
1003                                 read_from_sslcon = 1;
1004                         }
1005                 if (read_from_terminal)
1006                         {
1007                         if (s_crlf)
1008                                 {
1009                                 int j, lf_num;
1010
1011                                 i=read(fileno(stdin), buf, bufsize/2);
1012                                 lf_num = 0;
1013                                 /* both loops are skipped when i <= 0 */
1014                                 for (j = 0; j < i; j++)
1015                                         if (buf[j] == '\n')
1016                                                 lf_num++;
1017                                 for (j = i-1; j >= 0; j--)
1018                                         {
1019                                         buf[j+lf_num] = buf[j];
1020                                         if (buf[j] == '\n')
1021                                                 {
1022                                                 lf_num--;
1023                                                 i++;
1024                                                 buf[j+lf_num] = '\r';
1025                                                 }
1026                                         }
1027                                 assert(lf_num == 0);
1028                                 }
1029                         else
1030                                 i=read(fileno(stdin),buf,bufsize);
1031                         if (!s_quiet)
1032                                 {
1033                                 if ((i <= 0) || (buf[0] == 'Q'))
1034                                         {
1035                                         BIO_printf(bio_s_out,"DONE\n");
1036                                         SHUTDOWN(s);
1037                                         close_accept_socket();
1038                                         ret= -11;
1039                                         goto err;
1040                                         }
1041                                 if ((i <= 0) || (buf[0] == 'q'))
1042                                         {
1043                                         BIO_printf(bio_s_out,"DONE\n");
1044                                         SHUTDOWN(s);
1045         /*                              close_accept_socket();
1046                                         ret= -11;*/
1047                                         goto err;
1048                                         }
1049                                 if ((buf[0] == 'r') && 
1050                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1051                                         {
1052                                         SSL_renegotiate(con);
1053                                         i=SSL_do_handshake(con);
1054                                         printf("SSL_do_handshake -> %d\n",i);
1055                                         i=0; /*13; */
1056                                         continue;
1057                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
1058                                         }
1059                                 if ((buf[0] == 'R') &&
1060                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1061                                         {
1062                                         SSL_set_verify(con,
1063                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1064                                         SSL_renegotiate(con);
1065                                         i=SSL_do_handshake(con);
1066                                         printf("SSL_do_handshake -> %d\n",i);
1067                                         i=0; /* 13; */
1068                                         continue;
1069                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1070                                         }
1071                                 if (buf[0] == 'P')
1072                                         {
1073                                         static char *str="Lets print some clear text\n";
1074                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
1075                                         }
1076                                 if (buf[0] == 'S')
1077                                         {
1078                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1079                                         }
1080                                 }
1081 #ifdef CHARSET_EBCDIC
1082                         ebcdic2ascii(buf,buf,i);
1083 #endif
1084                         l=k=0;
1085                         for (;;)
1086                                 {
1087                                 /* should do a select for the write */
1088 #ifdef RENEG
1089 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1090 #endif
1091                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
1092                                 switch (SSL_get_error(con,k))
1093                                         {
1094                                 case SSL_ERROR_NONE:
1095                                         break;
1096                                 case SSL_ERROR_WANT_WRITE:
1097                                 case SSL_ERROR_WANT_READ:
1098                                 case SSL_ERROR_WANT_X509_LOOKUP:
1099                                         BIO_printf(bio_s_out,"Write BLOCK\n");
1100                                         break;
1101                                 case SSL_ERROR_SYSCALL:
1102                                 case SSL_ERROR_SSL:
1103                                         BIO_printf(bio_s_out,"ERROR\n");
1104                                         ERR_print_errors(bio_err);
1105                                         ret=1;
1106                                         goto err;
1107                                         /* break; */
1108                                 case SSL_ERROR_ZERO_RETURN:
1109                                         BIO_printf(bio_s_out,"DONE\n");
1110                                         ret=1;
1111                                         goto err;
1112                                         }
1113                                 l+=k;
1114                                 i-=k;
1115                                 if (i <= 0) break;
1116                                 }
1117                         }
1118                 if (read_from_sslcon)
1119                         {
1120                         if (!SSL_is_init_finished(con))
1121                                 {
1122                                 i=init_ssl_connection(con);
1123                                 
1124                                 if (i < 0)
1125                                         {
1126                                         ret=0;
1127                                         goto err;
1128                                         }
1129                                 else if (i == 0)
1130                                         {
1131                                         ret=1;
1132                                         goto err;
1133                                         }
1134                                 }
1135                         else
1136                                 {
1137 again:  
1138                                 i=SSL_read(con,(char *)buf,bufsize);
1139                                 switch (SSL_get_error(con,i))
1140                                         {
1141                                 case SSL_ERROR_NONE:
1142 #ifdef CHARSET_EBCDIC
1143                                         ascii2ebcdic(buf,buf,i);
1144 #endif
1145                                         write(fileno(stdout),buf,
1146                                                 (unsigned int)i);
1147                                         if (SSL_pending(con)) goto again;
1148                                         break;
1149                                 case SSL_ERROR_WANT_WRITE:
1150                                 case SSL_ERROR_WANT_READ:
1151                                 case SSL_ERROR_WANT_X509_LOOKUP:
1152                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1153                                         break;
1154                                 case SSL_ERROR_SYSCALL:
1155                                 case SSL_ERROR_SSL:
1156                                         BIO_printf(bio_s_out,"ERROR\n");
1157                                         ERR_print_errors(bio_err);
1158                                         ret=1;
1159                                         goto err;
1160                                 case SSL_ERROR_ZERO_RETURN:
1161                                         BIO_printf(bio_s_out,"DONE\n");
1162                                         ret=1;
1163                                         goto err;
1164                                         }
1165                                 }
1166                         }
1167                 }
1168 err:
1169         BIO_printf(bio_s_out,"shutting down SSL\n");
1170 #if 1
1171         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1172 #else
1173         SSL_shutdown(con);
1174 #endif
1175         if (con != NULL) SSL_free(con);
1176         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1177         if (buf != NULL)
1178                 {
1179                 memset(buf,0,bufsize);
1180                 OPENSSL_free(buf);
1181                 }
1182         if (ret >= 0)
1183                 BIO_printf(bio_s_out,"ACCEPT\n");
1184         return(ret);
1185         }
1186
1187 static void close_accept_socket(void)
1188         {
1189         BIO_printf(bio_err,"shutdown accept socket\n");
1190         if (accept_socket >= 0)
1191                 {
1192                 SHUTDOWN2(accept_socket);
1193                 }
1194         }
1195
1196 static int init_ssl_connection(SSL *con)
1197         {
1198         int i;
1199         const char *str;
1200         X509 *peer;
1201         long verify_error;
1202         MS_STATIC char buf[BUFSIZ];
1203
1204         if ((i=SSL_accept(con)) <= 0)
1205                 {
1206                 if (BIO_sock_should_retry(i))
1207                         {
1208                         BIO_printf(bio_s_out,"DELAY\n");
1209                         return(1);
1210                         }
1211
1212                 BIO_printf(bio_err,"ERROR\n");
1213                 verify_error=SSL_get_verify_result(con);
1214                 if (verify_error != X509_V_OK)
1215                         {
1216                         BIO_printf(bio_err,"verify error:%s\n",
1217                                 X509_verify_cert_error_string(verify_error));
1218                         }
1219                 else
1220                         ERR_print_errors(bio_err);
1221                 return(0);
1222                 }
1223
1224         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1225
1226         peer=SSL_get_peer_certificate(con);
1227         if (peer != NULL)
1228                 {
1229                 BIO_printf(bio_s_out,"Client certificate\n");
1230                 PEM_write_bio_X509(bio_s_out,peer);
1231                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
1232                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1233                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
1234                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1235                 X509_free(peer);
1236                 }
1237
1238         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
1239                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1240         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1241         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1242         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1243         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1244                 TLS1_FLAGS_TLS_PADDING_BUG)
1245                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1246
1247         return(1);
1248         }
1249
1250 #ifndef OPENSSL_NO_DH
1251 static DH *load_dh_param(char *dhfile)
1252         {
1253         DH *ret=NULL;
1254         BIO *bio;
1255
1256         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1257                 goto err;
1258         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1259 err:
1260         if (bio != NULL) BIO_free(bio);
1261         return(ret);
1262         }
1263 #endif
1264
1265 #if 0
1266 static int load_CA(SSL_CTX *ctx, char *file)
1267         {
1268         FILE *in;
1269         X509 *x=NULL;
1270
1271         if ((in=fopen(file,"r")) == NULL)
1272                 return(0);
1273
1274         for (;;)
1275                 {
1276                 if (PEM_read_X509(in,&x,NULL) == NULL)
1277                         break;
1278                 SSL_CTX_add_client_CA(ctx,x);
1279                 }
1280         if (x != NULL) X509_free(x);
1281         fclose(in);
1282         return(1);
1283         }
1284 #endif
1285
1286 static int www_body(char *hostname, int s, unsigned char *context)
1287         {
1288         char *buf=NULL;
1289         int ret=1;
1290         int i,j,k,blank,dot;
1291         struct stat st_buf;
1292         SSL *con;
1293         SSL_CIPHER *c;
1294         BIO *io,*ssl_bio,*sbio;
1295         long total_bytes;
1296
1297         buf=OPENSSL_malloc(bufsize);
1298         if (buf == NULL) return(0);
1299         io=BIO_new(BIO_f_buffer());
1300         ssl_bio=BIO_new(BIO_f_ssl());
1301         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1302
1303 #ifdef FIONBIO  
1304         if (s_nbio)
1305                 {
1306                 unsigned long sl=1;
1307
1308                 if (!s_quiet)
1309                         BIO_printf(bio_err,"turning on non blocking io\n");
1310                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1311                         ERR_print_errors(bio_err);
1312                 }
1313 #endif
1314
1315         /* lets make the output buffer a reasonable size */
1316         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1317
1318         if ((con=SSL_new(ctx)) == NULL) goto err;
1319 #ifndef OPENSSL_NO_KRB5
1320         if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1321                 {
1322                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
1323                 kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
1324                 }
1325 #endif  /* OPENSSL_NO_KRB5 */
1326         if(context) SSL_set_session_id_context(con, context,
1327                                                strlen((char *)context));
1328
1329         sbio=BIO_new_socket(s,BIO_NOCLOSE);
1330         if (s_nbio_test)
1331                 {
1332                 BIO *test;
1333
1334                 test=BIO_new(BIO_f_nbio_test());
1335                 sbio=BIO_push(test,sbio);
1336                 }
1337         SSL_set_bio(con,sbio,sbio);
1338         SSL_set_accept_state(con);
1339
1340         /* SSL_set_fd(con,s); */
1341         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1342         BIO_push(io,ssl_bio);
1343 #ifdef CHARSET_EBCDIC
1344         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
1345 #endif
1346
1347         if (s_debug)
1348                 {
1349                 con->debug=1;
1350                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
1351                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1352                 }
1353         if (s_msg)
1354                 {
1355                 SSL_set_msg_callback(con, msg_cb);
1356                 SSL_set_msg_callback_arg(con, bio_s_out);
1357                 }
1358
1359         blank=0;
1360         for (;;)
1361                 {
1362                 if (hack)
1363                         {
1364                         i=SSL_accept(con);
1365
1366                         switch (SSL_get_error(con,i))
1367                                 {
1368                         case SSL_ERROR_NONE:
1369                                 break;
1370                         case SSL_ERROR_WANT_WRITE:
1371                         case SSL_ERROR_WANT_READ:
1372                         case SSL_ERROR_WANT_X509_LOOKUP:
1373                                 continue;
1374                         case SSL_ERROR_SYSCALL:
1375                         case SSL_ERROR_SSL:
1376                         case SSL_ERROR_ZERO_RETURN:
1377                                 ret=1;
1378                                 goto err;
1379                                 /* break; */
1380                                 }
1381
1382                         SSL_renegotiate(con);
1383                         SSL_write(con,NULL,0);
1384                         }
1385
1386                 i=BIO_gets(io,buf,bufsize-1);
1387                 if (i < 0) /* error */
1388                         {
1389                         if (!BIO_should_retry(io))
1390                                 {
1391                                 if (!s_quiet)
1392                                         ERR_print_errors(bio_err);
1393                                 goto err;
1394                                 }
1395                         else
1396                                 {
1397                                 BIO_printf(bio_s_out,"read R BLOCK\n");
1398 #ifndef OPENSSL_SYS_MSDOS
1399                                 sleep(1);
1400 #endif
1401                                 continue;
1402                                 }
1403                         }
1404                 else if (i == 0) /* end of input */
1405                         {
1406                         ret=1;
1407                         goto end;
1408                         }
1409
1410                 /* else we have data */
1411                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1412                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1413                         {
1414                         char *p;
1415                         X509 *peer;
1416                         STACK_OF(SSL_CIPHER) *sk;
1417                         static char *space="                          ";
1418
1419                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1420                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
1421                         BIO_puts(io,"<pre>\n");
1422 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1423                         BIO_puts(io,"\n");
1424                         for (i=0; i<local_argc; i++)
1425                                 {
1426                                 BIO_puts(io,local_argv[i]);
1427                                 BIO_write(io," ",1);
1428                                 }
1429                         BIO_puts(io,"\n");
1430
1431                         /* The following is evil and should not really
1432                          * be done */
1433                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1434                         sk=SSL_get_ciphers(con);
1435                         j=sk_SSL_CIPHER_num(sk);
1436                         for (i=0; i<j; i++)
1437                                 {
1438                                 c=sk_SSL_CIPHER_value(sk,i);
1439                                 BIO_printf(io,"%-11s:%-25s",
1440                                         SSL_CIPHER_get_version(c),
1441                                         SSL_CIPHER_get_name(c));
1442                                 if ((((i+1)%2) == 0) && (i+1 != j))
1443                                         BIO_puts(io,"\n");
1444                                 }
1445                         BIO_puts(io,"\n");
1446                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1447                         if (p != NULL)
1448                                 {
1449                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1450                                 j=i=0;
1451                                 while (*p)
1452                                         {
1453                                         if (*p == ':')
1454                                                 {
1455                                                 BIO_write(io,space,26-j);
1456                                                 i++;
1457                                                 j=0;
1458                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1459                                                 }
1460                                         else
1461                                                 {
1462                                                 BIO_write(io,p,1);
1463                                                 j++;
1464                                                 }
1465                                         p++;
1466                                         }
1467                                 BIO_puts(io,"\n");
1468                                 }
1469                         BIO_printf(io,((con->hit)
1470                                 ?"---\nReused, "
1471                                 :"---\nNew, "));
1472                         c=SSL_get_current_cipher(con);
1473                         BIO_printf(io,"%s, Cipher is %s\n",
1474                                 SSL_CIPHER_get_version(c),
1475                                 SSL_CIPHER_get_name(c));
1476                         SSL_SESSION_print(io,SSL_get_session(con));
1477                         BIO_printf(io,"---\n");
1478                         print_stats(io,SSL_get_SSL_CTX(con));
1479                         BIO_printf(io,"---\n");
1480                         peer=SSL_get_peer_certificate(con);
1481                         if (peer != NULL)
1482                                 {
1483                                 BIO_printf(io,"Client certificate\n");
1484                                 X509_print(io,peer);
1485                                 PEM_write_bio_X509(io,peer);
1486                                 }
1487                         else
1488                                 BIO_puts(io,"no client certificate available\n");
1489                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1490                         break;
1491                         }
1492                 else if ((www == 2 || www == 3)
1493                          && (strncmp("GET /",buf,5) == 0))
1494                         {
1495                         BIO *file;
1496                         char *p,*e;
1497                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1498
1499                         /* skip the '/' */
1500                         p= &(buf[5]);
1501
1502                         dot = 1;
1503                         for (e=p; *e != '\0'; e++)
1504                                 {
1505                                 if (e[0] == ' ')
1506                                         break;
1507
1508                                 switch (dot)
1509                                         {
1510                                 case 1:
1511                                         dot = (e[0] == '.') ? 2 : 0;
1512                                         break;
1513                                 case 2:
1514                                         dot = (e[0] == '.') ? 3 : 0;
1515                                         break;
1516                                 case 3:
1517                                         dot = (e[0] == '/') ? -1 : 0;
1518                                         break;
1519                                         }
1520                                 if (dot == 0)
1521                                         dot = (e[0] == '/') ? 1 : 0;
1522                                 }
1523                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
1524
1525                         if (*e == '\0')
1526                                 {
1527                                 BIO_puts(io,text);
1528                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1529                                 break;
1530                                 }
1531                         *e='\0';
1532
1533                         if (dot)
1534                                 {
1535                                 BIO_puts(io,text);
1536                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1537                                 break;
1538                                 }
1539
1540                         if (*p == '/')
1541                                 {
1542                                 BIO_puts(io,text);
1543                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1544                                 break;
1545                                 }
1546
1547 #if 0
1548                         /* append if a directory lookup */
1549                         if (e[-1] == '/')
1550                                 strcat(p,"index.html");
1551 #endif
1552
1553                         /* if a directory, do the index thang */
1554                         if (stat(p,&st_buf) < 0)
1555                                 {
1556                                 BIO_puts(io,text);
1557                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1558                                 ERR_print_errors(io);
1559                                 break;
1560                                 }
1561                         if (S_ISDIR(st_buf.st_mode))
1562                                 {
1563 #if 0 /* must check buffer size */
1564                                 strcat(p,"/index.html");
1565 #else
1566                                 BIO_puts(io,text);
1567                                 BIO_printf(io,"'%s' is a directory\r\n",p);
1568                                 break;
1569 #endif
1570                                 }
1571
1572                         if ((file=BIO_new_file(p,"r")) == NULL)
1573                                 {
1574                                 BIO_puts(io,text);
1575                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1576                                 ERR_print_errors(io);
1577                                 break;
1578                                 }
1579
1580                         if (!s_quiet)
1581                                 BIO_printf(bio_err,"FILE:%s\n",p);
1582
1583                         if (www == 2)
1584                                 {
1585                                 i=strlen(p);
1586                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1587                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1588                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1589                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1590                                 else
1591                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1592                                 }
1593                         /* send the file */
1594                         total_bytes=0;
1595                         for (;;)
1596                                 {
1597                                 i=BIO_read(file,buf,bufsize);
1598                                 if (i <= 0) break;
1599
1600 #ifdef RENEG
1601                                 total_bytes+=i;
1602                                 fprintf(stderr,"%d\n",i);
1603                                 if (total_bytes > 3*1024)
1604                                         {
1605                                         total_bytes=0;
1606                                         fprintf(stderr,"RENEGOTIATE\n");
1607                                         SSL_renegotiate(con);
1608                                         }
1609 #endif
1610
1611                                 for (j=0; j<i; )
1612                                         {
1613 #ifdef RENEG
1614 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1615 #endif
1616                                         k=BIO_write(io,&(buf[j]),i-j);
1617                                         if (k <= 0)
1618                                                 {
1619                                                 if (!BIO_should_retry(io))
1620                                                         goto write_error;
1621                                                 else
1622                                                         {
1623                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1624                                                         }
1625                                                 }
1626                                         else
1627                                                 {
1628                                                 j+=k;
1629                                                 }
1630                                         }
1631                                 }
1632 write_error:
1633                         BIO_free(file);
1634                         break;
1635                         }
1636                 }
1637
1638         for (;;)
1639                 {
1640                 i=(int)BIO_flush(io);
1641                 if (i <= 0)
1642                         {
1643                         if (!BIO_should_retry(io))
1644                                 break;
1645                         }
1646                 else
1647                         break;
1648                 }
1649 end:
1650 #if 1
1651         /* make sure we re-use sessions */
1652         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1653 #else
1654         /* This kills performance */
1655 /*      SSL_shutdown(con); A shutdown gets sent in the
1656  *      BIO_free_all(io) procession */
1657 #endif
1658
1659 err:
1660
1661         if (ret >= 0)
1662                 BIO_printf(bio_s_out,"ACCEPT\n");
1663
1664         if (buf != NULL) OPENSSL_free(buf);
1665         if (io != NULL) BIO_free_all(io);
1666 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1667         return(ret);
1668         }
1669
1670 #ifndef OPENSSL_NO_RSA
1671 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1672         {
1673         static RSA *rsa_tmp=NULL;
1674
1675         if (rsa_tmp == NULL)
1676                 {
1677                 if (!s_quiet)
1678                         {
1679                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1680                         (void)BIO_flush(bio_err);
1681                         }
1682                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1683                 if (!s_quiet)
1684                         {
1685                         BIO_printf(bio_err,"\n");
1686                         (void)BIO_flush(bio_err);
1687                         }
1688                 }
1689         return(rsa_tmp);
1690         }
1691 #endif
1692
1693 #define MAX_SESSION_ID_ATTEMPTS 10
1694 static int generate_session_id(const SSL *ssl, unsigned char *id,
1695                                 unsigned int *id_len)
1696         {
1697         unsigned int count = 0;
1698         do      {
1699                 RAND_pseudo_bytes(id, *id_len);
1700                 /* Prefix the session_id with the required prefix. NB: If our
1701                  * prefix is too long, clip it - but there will be worse effects
1702                  * anyway, eg. the server could only possibly create 1 session
1703                  * ID (ie. the prefix!) so all future session negotiations will
1704                  * fail due to conflicts. */
1705                 memcpy(id, session_id_prefix,
1706                         (strlen(session_id_prefix) < *id_len) ?
1707                         strlen(session_id_prefix) : *id_len);
1708                 }
1709         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
1710                 (++count < MAX_SESSION_ID_ATTEMPTS));
1711         if(count >= MAX_SESSION_ID_ATTEMPTS)
1712                 return 0;
1713         return 1;
1714         }