this time *really* fix the /../ check ...
[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 #include <assert.h>
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include <sys/types.h>
64 #include <sys/stat.h>
65 #include <openssl/e_os2.h>
66 #ifdef OPENSSL_NO_STDIO
67 #define APPS_WIN16
68 #endif
69
70 /* With IPv6, it looks like Digital has mixed up the proper order of
71    recursive header file inclusion, resulting in the compiler complaining
72    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
73    is needed to have fileno() declared correctly...  So let's define u_int */
74 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
75 #define __U_INT
76 typedef unsigned int u_int;
77 #endif
78
79 #include <openssl/lhash.h>
80 #include <openssl/bn.h>
81 #define USE_SOCKETS
82 #include "apps.h"
83 #include <openssl/err.h>
84 #include <openssl/pem.h>
85 #include <openssl/x509.h>
86 #include <openssl/ssl.h>
87 #include <openssl/engine.h>
88 #include "s_apps.h"
89
90 #ifdef OPENSSL_SYS_WINDOWS
91 #include <conio.h>
92 #endif
93
94 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
95 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
96 #undef FIONBIO
97 #endif
98
99 #ifndef OPENSSL_NO_RSA
100 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
101 #endif
102 static int sv_body(char *hostname, int s, unsigned char *context);
103 static int www_body(char *hostname, int s, unsigned char *context);
104 static void close_accept_socket(void );
105 static void sv_usage(void);
106 static int init_ssl_connection(SSL *s);
107 static void print_stats(BIO *bp,SSL_CTX *ctx);
108 static int generate_session_id(const SSL *ssl, unsigned char *id,
109                                 unsigned int *id_len);
110 #ifndef OPENSSL_NO_DH
111 static DH *load_dh_param(char *dhfile);
112 static DH *get_dh512(void);
113 #endif
114 #ifdef MONOLITH
115 static void s_server_init(void);
116 #endif
117
118 #ifndef S_ISDIR
119 # if defined(_S_IFMT) && defined(_S_IFDIR)
120 #  define S_ISDIR(a)    (((a) & _S_IFMT) == _S_IFDIR)
121 # else
122 #  define S_ISDIR(a)    (((a) & S_IFMT) == S_IFDIR)
123 # endif
124 #endif
125
126 #ifndef OPENSSL_NO_DH
127 static unsigned char dh512_p[]={
128         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
129         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
130         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
131         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
132         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
133         0x47,0x74,0xE8,0x33,
134         };
135 static unsigned char dh512_g[]={
136         0x02,
137         };
138
139 static DH *get_dh512(void)
140         {
141         DH *dh=NULL;
142
143         if ((dh=DH_new()) == NULL) return(NULL);
144         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
145         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
146         if ((dh->p == NULL) || (dh->g == NULL))
147                 return(NULL);
148         return(dh);
149         }
150 #endif
151
152 /* static int load_CA(SSL_CTX *ctx, char *file);*/
153
154 #undef BUFSIZZ
155 #define BUFSIZZ 16*1024
156 static int bufsize=BUFSIZZ;
157 static int accept_socket= -1;
158
159 #define TEST_CERT       "server.pem"
160 #undef PROG
161 #define PROG            s_server_main
162
163 extern int verify_depth;
164
165 static char *cipher=NULL;
166 static int s_server_verify=SSL_VERIFY_NONE;
167 static int s_server_session_id_context = 1; /* anything will do */
168 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
169 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
170 #ifdef FIONBIO
171 static int s_nbio=0;
172 #endif
173 static int s_nbio_test=0;
174 int s_crlf=0;
175 static SSL_CTX *ctx=NULL;
176 static int www=0;
177
178 static BIO *bio_s_out=NULL;
179 static int s_debug=0;
180 static int s_quiet=0;
181
182 static int hack=0;
183 static char *engine_id=NULL;
184 static const char *session_id_prefix=NULL;
185
186 #ifdef MONOLITH
187 static void s_server_init(void)
188         {
189         accept_socket=-1;
190         cipher=NULL;
191         s_server_verify=SSL_VERIFY_NONE;
192         s_dcert_file=NULL;
193         s_dkey_file=NULL;
194         s_cert_file=TEST_CERT;
195         s_key_file=NULL;
196 #ifdef FIONBIO
197         s_nbio=0;
198 #endif
199         s_nbio_test=0;
200         ctx=NULL;
201         www=0;
202
203         bio_s_out=NULL;
204         s_debug=0;
205         s_quiet=0;
206         hack=0;
207         engine_id=NULL;
208         }
209 #endif
210
211 static void sv_usage(void)
212         {
213         BIO_printf(bio_err,"usage: s_server [args ...]\n");
214         BIO_printf(bio_err,"\n");
215         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
216         BIO_printf(bio_err," -context arg  - set session ID context\n");
217         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
218         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
219         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
220         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
221         BIO_printf(bio_err," -key arg      - Private Key file to use, PEM format assumed, in cert file if\n");
222         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
223         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
224         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
225         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
226         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
227 #ifdef FIONBIO
228         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
229 #endif
230         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
231         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
232         BIO_printf(bio_err," -debug        - Print more output\n");
233         BIO_printf(bio_err," -state        - Print the SSL states\n");
234         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
235         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
236         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
237         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
238         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
239         BIO_printf(bio_err," -quiet        - No server output\n");
240         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
241         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
242         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
243         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
244         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
245         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
246         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
247 #ifndef OPENSSL_NO_DH
248         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
249 #endif
250         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
251         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
252         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
253         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
254         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
255         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
256         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
257         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
258         }
259
260 static int local_argc=0;
261 static char **local_argv;
262
263 #ifdef CHARSET_EBCDIC
264 static int ebcdic_new(BIO *bi);
265 static int ebcdic_free(BIO *a);
266 static int ebcdic_read(BIO *b, char *out, int outl);
267 static int ebcdic_write(BIO *b, char *in, int inl);
268 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr);
269 static int ebcdic_gets(BIO *bp, char *buf, int size);
270 static int ebcdic_puts(BIO *bp, char *str);
271
272 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
273 static BIO_METHOD methods_ebcdic=
274         {
275         BIO_TYPE_EBCDIC_FILTER,
276         "EBCDIC/ASCII filter",
277         ebcdic_write,
278         ebcdic_read,
279         ebcdic_puts,
280         ebcdic_gets,
281         ebcdic_ctrl,
282         ebcdic_new,
283         ebcdic_free,
284         };
285
286 typedef struct
287 {
288         size_t  alloced;
289         char    buff[1];
290 } EBCDIC_OUTBUFF;
291
292 BIO_METHOD *BIO_f_ebcdic_filter()
293 {
294         return(&methods_ebcdic);
295 }
296
297 static int ebcdic_new(BIO *bi)
298 {
299         EBCDIC_OUTBUFF *wbuf;
300
301         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
302         wbuf->alloced = 1024;
303         wbuf->buff[0] = '\0';
304
305         bi->ptr=(char *)wbuf;
306         bi->init=1;
307         bi->flags=0;
308         return(1);
309 }
310
311 static int ebcdic_free(BIO *a)
312 {
313         if (a == NULL) return(0);
314         if (a->ptr != NULL)
315                 OPENSSL_free(a->ptr);
316         a->ptr=NULL;
317         a->init=0;
318         a->flags=0;
319         return(1);
320 }
321         
322 static int ebcdic_read(BIO *b, char *out, int outl)
323 {
324         int ret=0;
325
326         if (out == NULL || outl == 0) return(0);
327         if (b->next_bio == NULL) return(0);
328
329         ret=BIO_read(b->next_bio,out,outl);
330         if (ret > 0)
331                 ascii2ebcdic(out,out,ret);
332         return(ret);
333 }
334
335 static int ebcdic_write(BIO *b, char *in, int inl)
336 {
337         EBCDIC_OUTBUFF *wbuf;
338         int ret=0;
339         int num;
340         unsigned char n;
341
342         if ((in == NULL) || (inl <= 0)) return(0);
343         if (b->next_bio == NULL) return(0);
344
345         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
346
347         if (inl > (num = wbuf->alloced))
348         {
349                 num = num + num;  /* double the size */
350                 if (num < inl)
351                         num = inl;
352                 OPENSSL_free(wbuf);
353                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
354
355                 wbuf->alloced = num;
356                 wbuf->buff[0] = '\0';
357
358                 b->ptr=(char *)wbuf;
359         }
360
361         ebcdic2ascii(wbuf->buff, in, inl);
362
363         ret=BIO_write(b->next_bio, wbuf->buff, inl);
364
365         return(ret);
366 }
367
368 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr)
369 {
370         long ret;
371
372         if (b->next_bio == NULL) return(0);
373         switch (cmd)
374         {
375         case BIO_CTRL_DUP:
376                 ret=0L;
377                 break;
378         default:
379                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
380                 break;
381         }
382         return(ret);
383 }
384
385 static int ebcdic_gets(BIO *bp, char *buf, int size)
386 {
387         int i, ret;
388         if (bp->next_bio == NULL) return(0);
389 /*      return(BIO_gets(bp->next_bio,buf,size));*/
390         for (i=0; i<size-1; ++i)
391         {
392                 ret = ebcdic_read(bp,&buf[i],1);
393                 if (ret <= 0)
394                         break;
395                 else if (buf[i] == '\n')
396                 {
397                         ++i;
398                         break;
399                 }
400         }
401         if (i < size)
402                 buf[i] = '\0';
403         return (ret < 0 && i == 0) ? ret : i;
404 }
405
406 static int ebcdic_puts(BIO *bp, char *str)
407 {
408         if (bp->next_bio == NULL) return(0);
409         return ebcdic_write(bp, str, strlen(str));
410 }
411 #endif
412
413 int MAIN(int, char **);
414
415 int MAIN(int argc, char *argv[])
416         {
417         short port=PORT;
418         char *CApath=NULL,*CAfile=NULL;
419         char *context = NULL;
420         char *dhfile = NULL;
421         int badop=0,bugs=0;
422         int ret=1;
423         int off=0;
424         int no_tmp_rsa=0,no_dhe=0,nocert=0;
425         int state=0;
426         SSL_METHOD *meth=NULL;
427         ENGINE *e=NULL;
428         char *inrand=NULL;
429
430 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
431         meth=SSLv23_server_method();
432 #elif !defined(OPENSSL_NO_SSL3)
433         meth=SSLv3_server_method();
434 #elif !defined(OPENSSL_NO_SSL2)
435         meth=SSLv2_server_method();
436 #endif
437
438         local_argc=argc;
439         local_argv=argv;
440
441         apps_startup();
442 #ifdef MONOLITH
443         s_server_init();
444 #endif
445
446         if (bio_err == NULL)
447                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
448
449         verify_depth=0;
450 #ifdef FIONBIO
451         s_nbio=0;
452 #endif
453         s_nbio_test=0;
454
455         argc--;
456         argv++;
457
458         while (argc >= 1)
459                 {
460                 if      ((strcmp(*argv,"-port") == 0) ||
461                          (strcmp(*argv,"-accept") == 0))
462                         {
463                         if (--argc < 1) goto bad;
464                         if (!extract_port(*(++argv),&port))
465                                 goto bad;
466                         }
467                 else if (strcmp(*argv,"-verify") == 0)
468                         {
469                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
470                         if (--argc < 1) goto bad;
471                         verify_depth=atoi(*(++argv));
472                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
473                         }
474                 else if (strcmp(*argv,"-Verify") == 0)
475                         {
476                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
477                                 SSL_VERIFY_CLIENT_ONCE;
478                         if (--argc < 1) goto bad;
479                         verify_depth=atoi(*(++argv));
480                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
481                         }
482                 else if (strcmp(*argv,"-context") == 0)
483                         {
484                         if (--argc < 1) goto bad;
485                         context= *(++argv);
486                         }
487                 else if (strcmp(*argv,"-cert") == 0)
488                         {
489                         if (--argc < 1) goto bad;
490                         s_cert_file= *(++argv);
491                         }
492                 else if (strcmp(*argv,"-key") == 0)
493                         {
494                         if (--argc < 1) goto bad;
495                         s_key_file= *(++argv);
496                         }
497                 else if (strcmp(*argv,"-dhparam") == 0)
498                         {
499                         if (--argc < 1) goto bad;
500                         dhfile = *(++argv);
501                         }
502                 else if (strcmp(*argv,"-dcert") == 0)
503                         {
504                         if (--argc < 1) goto bad;
505                         s_dcert_file= *(++argv);
506                         }
507                 else if (strcmp(*argv,"-dkey") == 0)
508                         {
509                         if (--argc < 1) goto bad;
510                         s_dkey_file= *(++argv);
511                         }
512                 else if (strcmp(*argv,"-nocert") == 0)
513                         {
514                         nocert=1;
515                         }
516                 else if (strcmp(*argv,"-CApath") == 0)
517                         {
518                         if (--argc < 1) goto bad;
519                         CApath= *(++argv);
520                         }
521                 else if (strcmp(*argv,"-serverpref") == 0)
522                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
523                 else if (strcmp(*argv,"-cipher") == 0)
524                         {
525                         if (--argc < 1) goto bad;
526                         cipher= *(++argv);
527                         }
528                 else if (strcmp(*argv,"-CAfile") == 0)
529                         {
530                         if (--argc < 1) goto bad;
531                         CAfile= *(++argv);
532                         }
533 #ifdef FIONBIO  
534                 else if (strcmp(*argv,"-nbio") == 0)
535                         { s_nbio=1; }
536 #endif
537                 else if (strcmp(*argv,"-nbio_test") == 0)
538                         {
539 #ifdef FIONBIO  
540                         s_nbio=1;
541 #endif
542                         s_nbio_test=1;
543                         }
544                 else if (strcmp(*argv,"-debug") == 0)
545                         { s_debug=1; }
546                 else if (strcmp(*argv,"-hack") == 0)
547                         { hack=1; }
548                 else if (strcmp(*argv,"-state") == 0)
549                         { state=1; }
550                 else if (strcmp(*argv,"-crlf") == 0)
551                         { s_crlf=1; }
552                 else if (strcmp(*argv,"-quiet") == 0)
553                         { s_quiet=1; }
554                 else if (strcmp(*argv,"-bugs") == 0)
555                         { bugs=1; }
556                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
557                         { no_tmp_rsa=1; }
558                 else if (strcmp(*argv,"-no_dhe") == 0)
559                         { no_dhe=1; }
560                 else if (strcmp(*argv,"-www") == 0)
561                         { www=1; }
562                 else if (strcmp(*argv,"-WWW") == 0)
563                         { www=2; }
564                 else if (strcmp(*argv,"-HTTP") == 0)
565                         { www=3; }
566                 else if (strcmp(*argv,"-no_ssl2") == 0)
567                         { off|=SSL_OP_NO_SSLv2; }
568                 else if (strcmp(*argv,"-no_ssl3") == 0)
569                         { off|=SSL_OP_NO_SSLv3; }
570                 else if (strcmp(*argv,"-no_tls1") == 0)
571                         { off|=SSL_OP_NO_TLSv1; }
572 #ifndef OPENSSL_NO_SSL2
573                 else if (strcmp(*argv,"-ssl2") == 0)
574                         { meth=SSLv2_server_method(); }
575 #endif
576 #ifndef OPENSSL_NO_SSL3
577                 else if (strcmp(*argv,"-ssl3") == 0)
578                         { meth=SSLv3_server_method(); }
579 #endif
580 #ifndef OPENSSL_NO_TLS1
581                 else if (strcmp(*argv,"-tls1") == 0)
582                         { meth=TLSv1_server_method(); }
583 #endif
584                 else if (strcmp(*argv, "-id_prefix") == 0)
585                         {
586                         if (--argc < 1) goto bad;
587                         session_id_prefix = *(++argv);
588                         }
589                 else if (strcmp(*argv,"-engine") == 0)
590                         {
591                         if (--argc < 1) goto bad;
592                         engine_id= *(++argv);
593                         }
594                 else if (strcmp(*argv,"-rand") == 0)
595                         {
596                         if (--argc < 1) goto bad;
597                         inrand= *(++argv);
598                         }
599                 else
600                         {
601                         BIO_printf(bio_err,"unknown option %s\n",*argv);
602                         badop=1;
603                         break;
604                         }
605                 argc--;
606                 argv++;
607                 }
608         if (badop)
609                 {
610 bad:
611                 sv_usage();
612                 goto end;
613                 }
614
615         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
616                 && !RAND_status())
617                 {
618                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
619                 }
620         if (inrand != NULL)
621                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
622                         app_RAND_load_files(inrand));
623
624         if (bio_s_out == NULL)
625                 {
626                 if (s_quiet && !s_debug)
627                         {
628                         bio_s_out=BIO_new(BIO_s_null());
629                         }
630                 else
631                         {
632                         if (bio_s_out == NULL)
633                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
634                         }
635                 }
636
637 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA)
638         if (nocert)
639 #endif
640                 {
641                 s_cert_file=NULL;
642                 s_key_file=NULL;
643                 s_dcert_file=NULL;
644                 s_dkey_file=NULL;
645                 }
646
647         SSL_load_error_strings();
648         OpenSSL_add_ssl_algorithms();
649
650         if (engine_id != NULL)
651                 {
652                 if((e = ENGINE_by_id(engine_id)) == NULL)
653                         {
654                         BIO_printf(bio_err,"invalid engine\n");
655                         ERR_print_errors(bio_err);
656                         goto end;
657                         }
658                 if (s_debug)
659                         {
660                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
661                                 0, bio_err, 0);
662                         }
663                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
664                         {
665                         BIO_printf(bio_err,"can't use that engine\n");
666                         ERR_print_errors(bio_err);
667                         goto end;
668                         }
669                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine_id);
670                 ENGINE_free(e);
671                 }
672
673         ctx=SSL_CTX_new(meth);
674         if (ctx == NULL)
675                 {
676                 ERR_print_errors(bio_err);
677                 goto end;
678                 }
679         if (session_id_prefix)
680                 {
681                 if(strlen(session_id_prefix) >= 32)
682                         BIO_printf(bio_err,
683 "warning: id_prefix is too long, only one new session will be possible\n");
684                 else if(strlen(session_id_prefix) >= 16)
685                         BIO_printf(bio_err,
686 "warning: id_prefix is too long if you use SSLv2\n");
687                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
688                         {
689                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
690                         ERR_print_errors(bio_err);
691                         goto end;
692                         }
693                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
694                 }
695         SSL_CTX_set_quiet_shutdown(ctx,1);
696         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
697         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
698         SSL_CTX_set_options(ctx,off);
699         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
700
701         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
702
703         SSL_CTX_sess_set_cache_size(ctx,128);
704
705 #if 0
706         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
707 #endif
708
709 #if 0
710         if (s_cert_file == NULL)
711                 {
712                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
713                 goto end;
714                 }
715 #endif
716
717         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
718                 (!SSL_CTX_set_default_verify_paths(ctx)))
719                 {
720                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
721                 ERR_print_errors(bio_err);
722                 /* goto end; */
723                 }
724
725 #ifndef OPENSSL_NO_DH
726         if (!no_dhe)
727                 {
728                 DH *dh=NULL;
729
730                 if (dhfile)
731                         dh = load_dh_param(dhfile);
732                 else if (s_cert_file)
733                         dh = load_dh_param(s_cert_file);
734
735                 if (dh != NULL)
736                         {
737                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
738                         }
739                 else
740                         {
741                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
742                         dh=get_dh512();
743                         }
744                 (void)BIO_flush(bio_s_out);
745
746                 SSL_CTX_set_tmp_dh(ctx,dh);
747                 DH_free(dh);
748                 }
749 #endif
750         
751         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
752                 goto end;
753         if (s_dcert_file != NULL)
754                 {
755                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
756                         goto end;
757                 }
758
759 #ifndef OPENSSL_NO_RSA
760 #if 1
761         if (!no_tmp_rsa)
762                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
763 #else
764         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
765                 {
766                 RSA *rsa;
767
768                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
769                 BIO_flush(bio_s_out);
770
771                 rsa=RSA_generate_key(512,RSA_F4,NULL);
772
773                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
774                         {
775                         ERR_print_errors(bio_err);
776                         goto end;
777                         }
778                 RSA_free(rsa);
779                 BIO_printf(bio_s_out,"\n");
780                 }
781 #endif
782 #endif
783
784         if (cipher != NULL)
785                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
786                 BIO_printf(bio_err,"error setting cipher list\n");
787                 ERR_print_errors(bio_err);
788                 goto end;
789         }
790         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
791         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
792                 sizeof s_server_session_id_context);
793
794         if (CAfile != NULL)
795             SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
796
797         BIO_printf(bio_s_out,"ACCEPT\n");
798         if (www)
799                 do_server(port,&accept_socket,www_body, context);
800         else
801                 do_server(port,&accept_socket,sv_body, context);
802         print_stats(bio_s_out,ctx);
803         ret=0;
804 end:
805         if (ctx != NULL) SSL_CTX_free(ctx);
806         if (bio_s_out != NULL)
807                 {
808                 BIO_free(bio_s_out);
809                 bio_s_out=NULL;
810                 }
811         EXIT(ret);
812         }
813
814 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
815         {
816         BIO_printf(bio,"%4ld items in the session cache\n",
817                 SSL_CTX_sess_number(ssl_ctx));
818         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
819                 SSL_CTX_sess_connect(ssl_ctx));
820         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
821                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
822         BIO_printf(bio,"%4d client connects that finished\n",
823                 SSL_CTX_sess_connect_good(ssl_ctx));
824         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
825                 SSL_CTX_sess_accept(ssl_ctx));
826         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
827                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
828         BIO_printf(bio,"%4d server accepts that finished\n",
829                 SSL_CTX_sess_accept_good(ssl_ctx));
830         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
831         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
832         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
833         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
834         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
835                 SSL_CTX_sess_cache_full(ssl_ctx),
836                 SSL_CTX_sess_get_cache_size(ssl_ctx));
837         }
838
839 static int sv_body(char *hostname, int s, unsigned char *context)
840         {
841         char *buf=NULL;
842         fd_set readfds;
843         int ret=1,width;
844         int k,i;
845         unsigned long l;
846         SSL *con=NULL;
847         BIO *sbio;
848 #ifdef OPENSSL_SYS_WINDOWS
849         struct timeval tv;
850 #endif
851
852         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
853                 {
854                 BIO_printf(bio_err,"out of memory\n");
855                 goto err;
856                 }
857 #ifdef FIONBIO  
858         if (s_nbio)
859                 {
860                 unsigned long sl=1;
861
862                 if (!s_quiet)
863                         BIO_printf(bio_err,"turning on non blocking io\n");
864                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
865                         ERR_print_errors(bio_err);
866                 }
867 #endif
868
869         if (con == NULL) {
870                 con=SSL_new(ctx);
871 #ifndef OPENSSL_NO_KRB5
872                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
873                         {
874                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
875                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
876                         }
877 #endif  /* OPENSSL_NO_KRB5 */
878                 if(context)
879                       SSL_set_session_id_context(con, context,
880                                                  strlen((char *)context));
881         }
882         SSL_clear(con);
883
884         sbio=BIO_new_socket(s,BIO_NOCLOSE);
885         if (s_nbio_test)
886                 {
887                 BIO *test;
888
889                 test=BIO_new(BIO_f_nbio_test());
890                 sbio=BIO_push(test,sbio);
891                 }
892         SSL_set_bio(con,sbio,sbio);
893         SSL_set_accept_state(con);
894         /* SSL_set_fd(con,s); */
895
896         if (s_debug)
897                 {
898                 con->debug=1;
899                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
900                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
901                 }
902
903         width=s+1;
904         for (;;)
905                 {
906                 int read_from_terminal;
907                 int read_from_sslcon;
908
909                 read_from_terminal = 0;
910                 read_from_sslcon = SSL_pending(con);
911
912                 if (!read_from_sslcon)
913                         {
914                         FD_ZERO(&readfds);
915 #ifndef OPENSSL_SYS_WINDOWS
916                         FD_SET(fileno(stdin),&readfds);
917 #endif
918                         FD_SET(s,&readfds);
919                         /* Note: under VMS with SOCKETSHR the second parameter is
920                          * currently of type (int *) whereas under other systems
921                          * it is (void *) if you don't have a cast it will choke
922                          * the compiler: if you do have a cast then you can either
923                          * go for (int *) or (void *).
924                          */
925 #ifdef OPENSSL_SYS_WINDOWS
926                         /* Under Windows we can't select on stdin: only
927                          * on sockets. As a workaround we timeout the select every
928                          * second and check for any keypress. In a proper Windows
929                          * application we wouldn't do this because it is inefficient.
930                          */
931                         tv.tv_sec = 1;
932                         tv.tv_usec = 0;
933                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
934                         if((i < 0) || (!i && !_kbhit() ) )continue;
935                         if(_kbhit())
936                                 read_from_terminal = 1;
937 #else
938                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
939                         if (i <= 0) continue;
940                         if (FD_ISSET(fileno(stdin),&readfds))
941                                 read_from_terminal = 1;
942 #endif
943                         if (FD_ISSET(s,&readfds))
944                                 read_from_sslcon = 1;
945                         }
946                 if (read_from_terminal)
947                         {
948                         if (s_crlf)
949                                 {
950                                 int j, lf_num;
951
952                                 i=read(fileno(stdin), buf, bufsize/2);
953                                 lf_num = 0;
954                                 /* both loops are skipped when i <= 0 */
955                                 for (j = 0; j < i; j++)
956                                         if (buf[j] == '\n')
957                                                 lf_num++;
958                                 for (j = i-1; j >= 0; j--)
959                                         {
960                                         buf[j+lf_num] = buf[j];
961                                         if (buf[j] == '\n')
962                                                 {
963                                                 lf_num--;
964                                                 i++;
965                                                 buf[j+lf_num] = '\r';
966                                                 }
967                                         }
968                                 assert(lf_num == 0);
969                                 }
970                         else
971                                 i=read(fileno(stdin),buf,bufsize);
972                         if (!s_quiet)
973                                 {
974                                 if ((i <= 0) || (buf[0] == 'Q'))
975                                         {
976                                         BIO_printf(bio_s_out,"DONE\n");
977                                         SHUTDOWN(s);
978                                         close_accept_socket();
979                                         ret= -11;
980                                         goto err;
981                                         }
982                                 if ((i <= 0) || (buf[0] == 'q'))
983                                         {
984                                         BIO_printf(bio_s_out,"DONE\n");
985                                         SHUTDOWN(s);
986         /*                              close_accept_socket();
987                                         ret= -11;*/
988                                         goto err;
989                                         }
990                                 if ((buf[0] == 'r') && 
991                                         ((buf[1] == '\n') || (buf[1] == '\r')))
992                                         {
993                                         SSL_renegotiate(con);
994                                         i=SSL_do_handshake(con);
995                                         printf("SSL_do_handshake -> %d\n",i);
996                                         i=0; /*13; */
997                                         continue;
998                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
999                                         }
1000                                 if ((buf[0] == 'R') &&
1001                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1002                                         {
1003                                         SSL_set_verify(con,
1004                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1005                                         SSL_renegotiate(con);
1006                                         i=SSL_do_handshake(con);
1007                                         printf("SSL_do_handshake -> %d\n",i);
1008                                         i=0; /* 13; */
1009                                         continue;
1010                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1011                                         }
1012                                 if (buf[0] == 'P')
1013                                         {
1014                                         static char *str="Lets print some clear text\n";
1015                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
1016                                         }
1017                                 if (buf[0] == 'S')
1018                                         {
1019                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1020                                         }
1021                                 }
1022 #ifdef CHARSET_EBCDIC
1023                         ebcdic2ascii(buf,buf,i);
1024 #endif
1025                         l=k=0;
1026                         for (;;)
1027                                 {
1028                                 /* should do a select for the write */
1029 #ifdef RENEG
1030 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1031 #endif
1032                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
1033                                 switch (SSL_get_error(con,k))
1034                                         {
1035                                 case SSL_ERROR_NONE:
1036                                         break;
1037                                 case SSL_ERROR_WANT_WRITE:
1038                                 case SSL_ERROR_WANT_READ:
1039                                 case SSL_ERROR_WANT_X509_LOOKUP:
1040                                         BIO_printf(bio_s_out,"Write BLOCK\n");
1041                                         break;
1042                                 case SSL_ERROR_SYSCALL:
1043                                 case SSL_ERROR_SSL:
1044                                         BIO_printf(bio_s_out,"ERROR\n");
1045                                         ERR_print_errors(bio_err);
1046                                         ret=1;
1047                                         goto err;
1048                                         /* break; */
1049                                 case SSL_ERROR_ZERO_RETURN:
1050                                         BIO_printf(bio_s_out,"DONE\n");
1051                                         ret=1;
1052                                         goto err;
1053                                         }
1054                                 l+=k;
1055                                 i-=k;
1056                                 if (i <= 0) break;
1057                                 }
1058                         }
1059                 if (read_from_sslcon)
1060                         {
1061                         if (!SSL_is_init_finished(con))
1062                                 {
1063                                 i=init_ssl_connection(con);
1064                                 
1065                                 if (i < 0)
1066                                         {
1067                                         ret=0;
1068                                         goto err;
1069                                         }
1070                                 else if (i == 0)
1071                                         {
1072                                         ret=1;
1073                                         goto err;
1074                                         }
1075                                 }
1076                         else
1077                                 {
1078 again:  
1079                                 i=SSL_read(con,(char *)buf,bufsize);
1080                                 switch (SSL_get_error(con,i))
1081                                         {
1082                                 case SSL_ERROR_NONE:
1083 #ifdef CHARSET_EBCDIC
1084                                         ascii2ebcdic(buf,buf,i);
1085 #endif
1086                                         write(fileno(stdout),buf,
1087                                                 (unsigned int)i);
1088                                         if (SSL_pending(con)) goto again;
1089                                         break;
1090                                 case SSL_ERROR_WANT_WRITE:
1091                                 case SSL_ERROR_WANT_READ:
1092                                 case SSL_ERROR_WANT_X509_LOOKUP:
1093                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1094                                         break;
1095                                 case SSL_ERROR_SYSCALL:
1096                                 case SSL_ERROR_SSL:
1097                                         BIO_printf(bio_s_out,"ERROR\n");
1098                                         ERR_print_errors(bio_err);
1099                                         ret=1;
1100                                         goto err;
1101                                 case SSL_ERROR_ZERO_RETURN:
1102                                         BIO_printf(bio_s_out,"DONE\n");
1103                                         ret=1;
1104                                         goto err;
1105                                         }
1106                                 }
1107                         }
1108                 }
1109 err:
1110         BIO_printf(bio_s_out,"shutting down SSL\n");
1111 #if 1
1112         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1113 #else
1114         SSL_shutdown(con);
1115 #endif
1116         if (con != NULL) SSL_free(con);
1117         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1118         if (buf != NULL)
1119                 {
1120                 memset(buf,0,bufsize);
1121                 OPENSSL_free(buf);
1122                 }
1123         if (ret >= 0)
1124                 BIO_printf(bio_s_out,"ACCEPT\n");
1125         return(ret);
1126         }
1127
1128 static void close_accept_socket(void)
1129         {
1130         BIO_printf(bio_err,"shutdown accept socket\n");
1131         if (accept_socket >= 0)
1132                 {
1133                 SHUTDOWN2(accept_socket);
1134                 }
1135         }
1136
1137 static int init_ssl_connection(SSL *con)
1138         {
1139         int i;
1140         const char *str;
1141         X509 *peer;
1142         long verify_error;
1143         MS_STATIC char buf[BUFSIZ];
1144
1145         if ((i=SSL_accept(con)) <= 0)
1146                 {
1147                 if (BIO_sock_should_retry(i))
1148                         {
1149                         BIO_printf(bio_s_out,"DELAY\n");
1150                         return(1);
1151                         }
1152
1153                 BIO_printf(bio_err,"ERROR\n");
1154                 verify_error=SSL_get_verify_result(con);
1155                 if (verify_error != X509_V_OK)
1156                         {
1157                         BIO_printf(bio_err,"verify error:%s\n",
1158                                 X509_verify_cert_error_string(verify_error));
1159                         }
1160                 else
1161                         ERR_print_errors(bio_err);
1162                 return(0);
1163                 }
1164
1165         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1166
1167         peer=SSL_get_peer_certificate(con);
1168         if (peer != NULL)
1169                 {
1170                 BIO_printf(bio_s_out,"Client certificate\n");
1171                 PEM_write_bio_X509(bio_s_out,peer);
1172                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
1173                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1174                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
1175                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1176                 X509_free(peer);
1177                 }
1178
1179         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
1180                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1181         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1182         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1183         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1184         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1185                 TLS1_FLAGS_TLS_PADDING_BUG)
1186                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1187
1188         return(1);
1189         }
1190
1191 #ifndef OPENSSL_NO_DH
1192 static DH *load_dh_param(char *dhfile)
1193         {
1194         DH *ret=NULL;
1195         BIO *bio;
1196
1197         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1198                 goto err;
1199         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1200 err:
1201         if (bio != NULL) BIO_free(bio);
1202         return(ret);
1203         }
1204 #endif
1205
1206 #if 0
1207 static int load_CA(SSL_CTX *ctx, char *file)
1208         {
1209         FILE *in;
1210         X509 *x=NULL;
1211
1212         if ((in=fopen(file,"r")) == NULL)
1213                 return(0);
1214
1215         for (;;)
1216                 {
1217                 if (PEM_read_X509(in,&x,NULL) == NULL)
1218                         break;
1219                 SSL_CTX_add_client_CA(ctx,x);
1220                 }
1221         if (x != NULL) X509_free(x);
1222         fclose(in);
1223         return(1);
1224         }
1225 #endif
1226
1227 static int www_body(char *hostname, int s, unsigned char *context)
1228         {
1229         char *buf=NULL;
1230         int ret=1;
1231         int i,j,k,blank,dot;
1232         struct stat st_buf;
1233         SSL *con;
1234         SSL_CIPHER *c;
1235         BIO *io,*ssl_bio,*sbio;
1236         long total_bytes;
1237
1238         buf=OPENSSL_malloc(bufsize);
1239         if (buf == NULL) return(0);
1240         io=BIO_new(BIO_f_buffer());
1241         ssl_bio=BIO_new(BIO_f_ssl());
1242         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1243
1244 #ifdef FIONBIO  
1245         if (s_nbio)
1246                 {
1247                 unsigned long sl=1;
1248
1249                 if (!s_quiet)
1250                         BIO_printf(bio_err,"turning on non blocking io\n");
1251                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1252                         ERR_print_errors(bio_err);
1253                 }
1254 #endif
1255
1256         /* lets make the output buffer a reasonable size */
1257         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1258
1259         if ((con=SSL_new(ctx)) == NULL) goto err;
1260         if(context) SSL_set_session_id_context(con, context,
1261                                                strlen((char *)context));
1262
1263         sbio=BIO_new_socket(s,BIO_NOCLOSE);
1264         if (s_nbio_test)
1265                 {
1266                 BIO *test;
1267
1268                 test=BIO_new(BIO_f_nbio_test());
1269                 sbio=BIO_push(test,sbio);
1270                 }
1271         SSL_set_bio(con,sbio,sbio);
1272         SSL_set_accept_state(con);
1273
1274         /* SSL_set_fd(con,s); */
1275         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1276         BIO_push(io,ssl_bio);
1277 #ifdef CHARSET_EBCDIC
1278         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
1279 #endif
1280
1281         if (s_debug)
1282                 {
1283                 con->debug=1;
1284                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
1285                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1286                 }
1287
1288         blank=0;
1289         for (;;)
1290                 {
1291                 if (hack)
1292                         {
1293                         i=SSL_accept(con);
1294
1295                         switch (SSL_get_error(con,i))
1296                                 {
1297                         case SSL_ERROR_NONE:
1298                                 break;
1299                         case SSL_ERROR_WANT_WRITE:
1300                         case SSL_ERROR_WANT_READ:
1301                         case SSL_ERROR_WANT_X509_LOOKUP:
1302                                 continue;
1303                         case SSL_ERROR_SYSCALL:
1304                         case SSL_ERROR_SSL:
1305                         case SSL_ERROR_ZERO_RETURN:
1306                                 ret=1;
1307                                 goto err;
1308                                 /* break; */
1309                                 }
1310
1311                         SSL_renegotiate(con);
1312                         SSL_write(con,NULL,0);
1313                         }
1314
1315                 i=BIO_gets(io,buf,bufsize-1);
1316                 if (i < 0) /* error */
1317                         {
1318                         if (!BIO_should_retry(io))
1319                                 {
1320                                 if (!s_quiet)
1321                                         ERR_print_errors(bio_err);
1322                                 goto err;
1323                                 }
1324                         else
1325                                 {
1326                                 BIO_printf(bio_s_out,"read R BLOCK\n");
1327 #ifndef OPENSSL_SYS_MSDOS
1328                                 sleep(1);
1329 #endif
1330                                 continue;
1331                                 }
1332                         }
1333                 else if (i == 0) /* end of input */
1334                         {
1335                         ret=1;
1336                         goto end;
1337                         }
1338
1339                 /* else we have data */
1340                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1341                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1342                         {
1343                         char *p;
1344                         X509 *peer;
1345                         STACK_OF(SSL_CIPHER) *sk;
1346                         static char *space="                          ";
1347
1348                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1349                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
1350                         BIO_puts(io,"<pre>\n");
1351 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1352                         BIO_puts(io,"\n");
1353                         for (i=0; i<local_argc; i++)
1354                                 {
1355                                 BIO_puts(io,local_argv[i]);
1356                                 BIO_write(io," ",1);
1357                                 }
1358                         BIO_puts(io,"\n");
1359
1360                         /* The following is evil and should not really
1361                          * be done */
1362                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1363                         sk=SSL_get_ciphers(con);
1364                         j=sk_SSL_CIPHER_num(sk);
1365                         for (i=0; i<j; i++)
1366                                 {
1367                                 c=sk_SSL_CIPHER_value(sk,i);
1368                                 BIO_printf(io,"%-11s:%-25s",
1369                                         SSL_CIPHER_get_version(c),
1370                                         SSL_CIPHER_get_name(c));
1371                                 if ((((i+1)%2) == 0) && (i+1 != j))
1372                                         BIO_puts(io,"\n");
1373                                 }
1374                         BIO_puts(io,"\n");
1375                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1376                         if (p != NULL)
1377                                 {
1378                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1379                                 j=i=0;
1380                                 while (*p)
1381                                         {
1382                                         if (*p == ':')
1383                                                 {
1384                                                 BIO_write(io,space,26-j);
1385                                                 i++;
1386                                                 j=0;
1387                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1388                                                 }
1389                                         else
1390                                                 {
1391                                                 BIO_write(io,p,1);
1392                                                 j++;
1393                                                 }
1394                                         p++;
1395                                         }
1396                                 BIO_puts(io,"\n");
1397                                 }
1398                         BIO_printf(io,((con->hit)
1399                                 ?"---\nReused, "
1400                                 :"---\nNew, "));
1401                         c=SSL_get_current_cipher(con);
1402                         BIO_printf(io,"%s, Cipher is %s\n",
1403                                 SSL_CIPHER_get_version(c),
1404                                 SSL_CIPHER_get_name(c));
1405                         SSL_SESSION_print(io,SSL_get_session(con));
1406                         BIO_printf(io,"---\n");
1407                         print_stats(io,SSL_get_SSL_CTX(con));
1408                         BIO_printf(io,"---\n");
1409                         peer=SSL_get_peer_certificate(con);
1410                         if (peer != NULL)
1411                                 {
1412                                 BIO_printf(io,"Client certificate\n");
1413                                 X509_print(io,peer);
1414                                 PEM_write_bio_X509(io,peer);
1415                                 }
1416                         else
1417                                 BIO_puts(io,"no client certificate available\n");
1418                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1419                         break;
1420                         }
1421                 else if ((www == 2 || www == 3)
1422                          && (strncmp("GET /",buf,5) == 0))
1423                         {
1424                         BIO *file;
1425                         char *p,*e;
1426                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1427
1428                         /* skip the '/' */
1429                         p= &(buf[5]);
1430
1431                         dot = 1;
1432                         for (e=p; *e != '\0'; e++)
1433                                 {
1434                                 if (e[0] == ' ')
1435                                         break;
1436
1437                                 switch (dot)
1438                                         {
1439                                 case 1:
1440                                         dot = (e[0] == '.') ? 2 : 0;
1441                                         break;
1442                                 case 2:
1443                                         dot = (e[0] == '.') ? 3 : 0;
1444                                         break;
1445                                 case 3:
1446                                         dot = (e[0] == '/') ? -1 : 0;
1447                                         break;
1448                                         }
1449                                 if (dot == 0)
1450                                         dot = (e[0] == '/') ? 1 : 0;
1451                                 }
1452                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
1453
1454                         if (*e == '\0')
1455                                 {
1456                                 BIO_puts(io,text);
1457                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1458                                 break;
1459                                 }
1460                         *e='\0';
1461
1462                         if (dot)
1463                                 {
1464                                 BIO_puts(io,text);
1465                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1466                                 break;
1467                                 }
1468
1469                         if (*p == '/')
1470                                 {
1471                                 BIO_puts(io,text);
1472                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1473                                 break;
1474                                 }
1475
1476                         /* append if a directory lookup */
1477                         if (e[-1] == '/')
1478                                 strcat(p,"index.html");
1479
1480                         /* if a directory, do the index thang */
1481                         if (stat(p,&st_buf) < 0)
1482                                 {
1483                                 BIO_puts(io,text);
1484                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1485                                 ERR_print_errors(io);
1486                                 break;
1487                                 }
1488                         if (S_ISDIR(st_buf.st_mode))
1489                                 {
1490                                 strcat(p,"/index.html");
1491                                 }
1492
1493                         if ((file=BIO_new_file(p,"r")) == NULL)
1494                                 {
1495                                 BIO_puts(io,text);
1496                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1497                                 ERR_print_errors(io);
1498                                 break;
1499                                 }
1500
1501                         if (!s_quiet)
1502                                 BIO_printf(bio_err,"FILE:%s\n",p);
1503
1504                         if (www == 2)
1505                                 {
1506                                 i=strlen(p);
1507                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1508                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1509                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1510                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1511                                 else
1512                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1513                                 }
1514                         /* send the file */
1515                         total_bytes=0;
1516                         for (;;)
1517                                 {
1518                                 i=BIO_read(file,buf,bufsize);
1519                                 if (i <= 0) break;
1520
1521 #ifdef RENEG
1522                                 total_bytes+=i;
1523                                 fprintf(stderr,"%d\n",i);
1524                                 if (total_bytes > 3*1024)
1525                                         {
1526                                         total_bytes=0;
1527                                         fprintf(stderr,"RENEGOTIATE\n");
1528                                         SSL_renegotiate(con);
1529                                         }
1530 #endif
1531
1532                                 for (j=0; j<i; )
1533                                         {
1534 #ifdef RENEG
1535 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1536 #endif
1537                                         k=BIO_write(io,&(buf[j]),i-j);
1538                                         if (k <= 0)
1539                                                 {
1540                                                 if (!BIO_should_retry(io))
1541                                                         goto write_error;
1542                                                 else
1543                                                         {
1544                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1545                                                         }
1546                                                 }
1547                                         else
1548                                                 {
1549                                                 j+=k;
1550                                                 }
1551                                         }
1552                                 }
1553 write_error:
1554                         BIO_free(file);
1555                         break;
1556                         }
1557                 }
1558
1559         for (;;)
1560                 {
1561                 i=(int)BIO_flush(io);
1562                 if (i <= 0)
1563                         {
1564                         if (!BIO_should_retry(io))
1565                                 break;
1566                         }
1567                 else
1568                         break;
1569                 }
1570 end:
1571 #if 1
1572         /* make sure we re-use sessions */
1573         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1574 #else
1575         /* This kills performance */
1576 /*      SSL_shutdown(con); A shutdown gets sent in the
1577  *      BIO_free_all(io) procession */
1578 #endif
1579
1580 err:
1581
1582         if (ret >= 0)
1583                 BIO_printf(bio_s_out,"ACCEPT\n");
1584
1585         if (buf != NULL) OPENSSL_free(buf);
1586         if (io != NULL) BIO_free_all(io);
1587 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1588         return(ret);
1589         }
1590
1591 #ifndef OPENSSL_NO_RSA
1592 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1593         {
1594         static RSA *rsa_tmp=NULL;
1595
1596         if (rsa_tmp == NULL)
1597                 {
1598                 if (!s_quiet)
1599                         {
1600                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1601                         (void)BIO_flush(bio_err);
1602                         }
1603                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1604                 if (!s_quiet)
1605                         {
1606                         BIO_printf(bio_err,"\n");
1607                         (void)BIO_flush(bio_err);
1608                         }
1609                 }
1610         return(rsa_tmp);
1611         }
1612 #endif
1613
1614 #define MAX_SESSION_ID_ATTEMPTS 10
1615 static int generate_session_id(const SSL *ssl, unsigned char *id,
1616                                 unsigned int *id_len)
1617         {
1618         unsigned int count = 0;
1619         do      {
1620                 RAND_pseudo_bytes(id, *id_len);
1621                 /* Prefix the session_id with the required prefix. NB: If our
1622                  * prefix is too long, clip it - but there will be worse effects
1623                  * anyway, eg. the server could only possibly create 1 session
1624                  * ID (ie. the prefix!) so all future session negotiations will
1625                  * fail due to conflicts. */
1626                 memcpy(id, session_id_prefix,
1627                         (strlen(session_id_prefix) < *id_len) ?
1628                         strlen(session_id_prefix) : *id_len);
1629                 }
1630         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
1631                 (++count < MAX_SESSION_ID_ATTEMPTS));
1632         if(count >= MAX_SESSION_ID_ATTEMPTS)
1633                 return 0;
1634         return 1;
1635         }