New Option SSL_OP_CIPHER_SERVER_PREFERENCE allows TLS/SSLv3 server to override
[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 #ifdef NO_STDIO
66 #define APPS_WIN16
67 #endif
68
69 /* With IPv6, it looks like Digital has mixed up the proper order of
70    recursive header file inclusion, resulting in the compiler complaining
71    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
72    is needed to have fileno() declared correctly...  So let's define u_int */
73 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
74 #define __U_INT
75 typedef unsigned int u_int;
76 #endif
77
78 #include <openssl/lhash.h>
79 #include <openssl/bn.h>
80 #define USE_SOCKETS
81 #include "apps.h"
82 #include <openssl/err.h>
83 #include <openssl/pem.h>
84 #include <openssl/x509.h>
85 #include <openssl/ssl.h>
86 #include <openssl/engine.h>
87 #include "s_apps.h"
88
89 #ifdef WINDOWS
90 #include <conio.h>
91 #endif
92
93 #if (defined(VMS) && __VMS_VER < 70000000)
94 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
95 #undef FIONBIO
96 #endif
97
98 #ifndef NO_RSA
99 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
100 #endif
101 static int sv_body(char *hostname, int s, unsigned char *context);
102 static int www_body(char *hostname, int s, unsigned char *context);
103 static void close_accept_socket(void );
104 static void sv_usage(void);
105 static int init_ssl_connection(SSL *s);
106 static void print_stats(BIO *bp,SSL_CTX *ctx);
107 #ifndef NO_DH
108 static DH *load_dh_param(char *dhfile);
109 static DH *get_dh512(void);
110 #endif
111 #ifdef MONOLITH
112 static void s_server_init(void);
113 #endif
114
115 #ifndef S_ISDIR
116 # if defined(_S_IFMT) && defined(_S_IFDIR)
117 #  define S_ISDIR(a)    (((a) & _S_IFMT) == _S_IFDIR)
118 # else
119 #  define S_ISDIR(a)    (((a) & S_IFMT) == S_IFDIR)
120 # endif
121 #endif
122
123 #ifndef NO_DH
124 static unsigned char dh512_p[]={
125         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
126         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
127         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
128         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
129         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
130         0x47,0x74,0xE8,0x33,
131         };
132 static unsigned char dh512_g[]={
133         0x02,
134         };
135
136 static DH *get_dh512(void)
137         {
138         DH *dh=NULL;
139
140         if ((dh=DH_new()) == NULL) return(NULL);
141         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
142         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
143         if ((dh->p == NULL) || (dh->g == NULL))
144                 return(NULL);
145         return(dh);
146         }
147 #endif
148
149 /* static int load_CA(SSL_CTX *ctx, char *file);*/
150
151 #undef BUFSIZZ
152 #define BUFSIZZ 16*1024
153 static int bufsize=BUFSIZZ;
154 static int accept_socket= -1;
155
156 #define TEST_CERT       "server.pem"
157 #undef PROG
158 #define PROG            s_server_main
159
160 extern int verify_depth;
161
162 static char *cipher=NULL;
163 static int s_server_verify=SSL_VERIFY_NONE;
164 static int s_server_session_id_context = 1; /* anything will do */
165 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
166 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
167 #ifdef FIONBIO
168 static int s_nbio=0;
169 #endif
170 static int s_nbio_test=0;
171 int s_crlf=0;
172 static SSL_CTX *ctx=NULL;
173 static int www=0;
174
175 static BIO *bio_s_out=NULL;
176 static int s_debug=0;
177 static int s_quiet=0;
178
179 static int hack=0;
180 static char *engine_id=NULL;
181
182 #ifdef MONOLITH
183 static void s_server_init(void)
184         {
185         accept_socket=-1;
186         cipher=NULL;
187         s_server_verify=SSL_VERIFY_NONE;
188         s_dcert_file=NULL;
189         s_dkey_file=NULL;
190         s_cert_file=TEST_CERT;
191         s_key_file=NULL;
192 #ifdef FIONBIO
193         s_nbio=0;
194 #endif
195         s_nbio_test=0;
196         ctx=NULL;
197         www=0;
198
199         bio_s_out=NULL;
200         s_debug=0;
201         s_quiet=0;
202         hack=0;
203         engine_id=NULL;
204         }
205 #endif
206
207 static void sv_usage(void)
208         {
209         BIO_printf(bio_err,"usage: s_server [args ...]\n");
210         BIO_printf(bio_err,"\n");
211         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
212         BIO_printf(bio_err," -context arg  - set session ID context\n");
213         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
214         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
215         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
216         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
217         BIO_printf(bio_err," -key arg      - Private Key file to use, PEM format assumed, in cert file if\n");
218         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
219         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
220         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
221         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
222         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
223 #ifdef FIONBIO
224         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
225 #endif
226         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
227         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
228         BIO_printf(bio_err," -debug        - Print more output\n");
229         BIO_printf(bio_err," -state        - Print the SSL states\n");
230         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
231         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
232         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
233         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
234         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
235         BIO_printf(bio_err," -quiet        - No server output\n");
236         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
237         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
238         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
239         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
240         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
241         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
242         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
243 #ifndef NO_DH
244         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
245 #endif
246         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
247         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
248         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
249         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
250         }
251
252 static int local_argc=0;
253 static char **local_argv;
254
255 #ifdef CHARSET_EBCDIC
256 static int ebcdic_new(BIO *bi);
257 static int ebcdic_free(BIO *a);
258 static int ebcdic_read(BIO *b, char *out, int outl);
259 static int ebcdic_write(BIO *b, char *in, int inl);
260 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr);
261 static int ebcdic_gets(BIO *bp, char *buf, int size);
262 static int ebcdic_puts(BIO *bp, char *str);
263
264 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
265 static BIO_METHOD methods_ebcdic=
266         {
267         BIO_TYPE_EBCDIC_FILTER,
268         "EBCDIC/ASCII filter",
269         ebcdic_write,
270         ebcdic_read,
271         ebcdic_puts,
272         ebcdic_gets,
273         ebcdic_ctrl,
274         ebcdic_new,
275         ebcdic_free,
276         };
277
278 typedef struct
279 {
280         size_t  alloced;
281         char    buff[1];
282 } EBCDIC_OUTBUFF;
283
284 BIO_METHOD *BIO_f_ebcdic_filter()
285 {
286         return(&methods_ebcdic);
287 }
288
289 static int ebcdic_new(BIO *bi)
290 {
291         EBCDIC_OUTBUFF *wbuf;
292
293         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
294         wbuf->alloced = 1024;
295         wbuf->buff[0] = '\0';
296
297         bi->ptr=(char *)wbuf;
298         bi->init=1;
299         bi->flags=0;
300         return(1);
301 }
302
303 static int ebcdic_free(BIO *a)
304 {
305         if (a == NULL) return(0);
306         if (a->ptr != NULL)
307                 OPENSSL_free(a->ptr);
308         a->ptr=NULL;
309         a->init=0;
310         a->flags=0;
311         return(1);
312 }
313         
314 static int ebcdic_read(BIO *b, char *out, int outl)
315 {
316         int ret=0;
317
318         if (out == NULL || outl == 0) return(0);
319         if (b->next_bio == NULL) return(0);
320
321         ret=BIO_read(b->next_bio,out,outl);
322         if (ret > 0)
323                 ascii2ebcdic(out,out,ret);
324         return(ret);
325 }
326
327 static int ebcdic_write(BIO *b, char *in, int inl)
328 {
329         EBCDIC_OUTBUFF *wbuf;
330         int ret=0;
331         int num;
332         unsigned char n;
333
334         if ((in == NULL) || (inl <= 0)) return(0);
335         if (b->next_bio == NULL) return(0);
336
337         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
338
339         if (inl > (num = wbuf->alloced))
340         {
341                 num = num + num;  /* double the size */
342                 if (num < inl)
343                         num = inl;
344                 OPENSSL_free(wbuf);
345                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
346
347                 wbuf->alloced = num;
348                 wbuf->buff[0] = '\0';
349
350                 b->ptr=(char *)wbuf;
351         }
352
353         ebcdic2ascii(wbuf->buff, in, inl);
354
355         ret=BIO_write(b->next_bio, wbuf->buff, inl);
356
357         return(ret);
358 }
359
360 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr)
361 {
362         long ret;
363
364         if (b->next_bio == NULL) return(0);
365         switch (cmd)
366         {
367         case BIO_CTRL_DUP:
368                 ret=0L;
369                 break;
370         default:
371                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
372                 break;
373         }
374         return(ret);
375 }
376
377 static int ebcdic_gets(BIO *bp, char *buf, int size)
378 {
379         int i, ret;
380         if (bp->next_bio == NULL) return(0);
381 /*      return(BIO_gets(bp->next_bio,buf,size));*/
382         for (i=0; i<size-1; ++i)
383         {
384                 ret = ebcdic_read(bp,&buf[i],1);
385                 if (ret <= 0)
386                         break;
387                 else if (buf[i] == '\n')
388                 {
389                         ++i;
390                         break;
391                 }
392         }
393         if (i < size)
394                 buf[i] = '\0';
395         return (ret < 0 && i == 0) ? ret : i;
396 }
397
398 static int ebcdic_puts(BIO *bp, char *str)
399 {
400         if (bp->next_bio == NULL) return(0);
401         return ebcdic_write(bp, str, strlen(str));
402 }
403 #endif
404
405 int MAIN(int, char **);
406
407 int MAIN(int argc, char *argv[])
408         {
409         short port=PORT;
410         char *CApath=NULL,*CAfile=NULL;
411         char *context = NULL;
412         char *dhfile = NULL;
413         int badop=0,bugs=0;
414         int ret=1;
415         int off=0;
416         int no_tmp_rsa=0,no_dhe=0,nocert=0;
417         int state=0;
418         SSL_METHOD *meth=NULL;
419         ENGINE *e=NULL;
420
421 #if !defined(NO_SSL2) && !defined(NO_SSL3)
422         meth=SSLv23_server_method();
423 #elif !defined(NO_SSL3)
424         meth=SSLv3_server_method();
425 #elif !defined(NO_SSL2)
426         meth=SSLv2_server_method();
427 #endif
428
429         local_argc=argc;
430         local_argv=argv;
431
432         apps_startup();
433 #ifdef MONOLITH
434         s_server_init();
435 #endif
436
437         if (bio_err == NULL)
438                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
439
440         verify_depth=0;
441 #ifdef FIONBIO
442         s_nbio=0;
443 #endif
444         s_nbio_test=0;
445
446         argc--;
447         argv++;
448
449         while (argc >= 1)
450                 {
451                 if      ((strcmp(*argv,"-port") == 0) ||
452                          (strcmp(*argv,"-accept") == 0))
453                         {
454                         if (--argc < 1) goto bad;
455                         if (!extract_port(*(++argv),&port))
456                                 goto bad;
457                         }
458                 else if (strcmp(*argv,"-verify") == 0)
459                         {
460                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
461                         if (--argc < 1) goto bad;
462                         verify_depth=atoi(*(++argv));
463                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
464                         }
465                 else if (strcmp(*argv,"-Verify") == 0)
466                         {
467                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
468                                 SSL_VERIFY_CLIENT_ONCE;
469                         if (--argc < 1) goto bad;
470                         verify_depth=atoi(*(++argv));
471                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
472                         }
473                 else if (strcmp(*argv,"-context") == 0)
474                         {
475                         if (--argc < 1) goto bad;
476                         context= *(++argv);
477                         }
478                 else if (strcmp(*argv,"-cert") == 0)
479                         {
480                         if (--argc < 1) goto bad;
481                         s_cert_file= *(++argv);
482                         }
483                 else if (strcmp(*argv,"-key") == 0)
484                         {
485                         if (--argc < 1) goto bad;
486                         s_key_file= *(++argv);
487                         }
488                 else if (strcmp(*argv,"-dhparam") == 0)
489                         {
490                         if (--argc < 1) goto bad;
491                         dhfile = *(++argv);
492                         }
493                 else if (strcmp(*argv,"-dcert") == 0)
494                         {
495                         if (--argc < 1) goto bad;
496                         s_dcert_file= *(++argv);
497                         }
498                 else if (strcmp(*argv,"-dkey") == 0)
499                         {
500                         if (--argc < 1) goto bad;
501                         s_dkey_file= *(++argv);
502                         }
503                 else if (strcmp(*argv,"-nocert") == 0)
504                         {
505                         nocert=1;
506                         }
507                 else if (strcmp(*argv,"-CApath") == 0)
508                         {
509                         if (--argc < 1) goto bad;
510                         CApath= *(++argv);
511                         }
512                 else if (strcmp(*argv,"-serverpref") == 0)
513                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
514                 else if (strcmp(*argv,"-cipher") == 0)
515                         {
516                         if (--argc < 1) goto bad;
517                         cipher= *(++argv);
518                         }
519                 else if (strcmp(*argv,"-CAfile") == 0)
520                         {
521                         if (--argc < 1) goto bad;
522                         CAfile= *(++argv);
523                         }
524 #ifdef FIONBIO  
525                 else if (strcmp(*argv,"-nbio") == 0)
526                         { s_nbio=1; }
527 #endif
528                 else if (strcmp(*argv,"-nbio_test") == 0)
529                         {
530 #ifdef FIONBIO  
531                         s_nbio=1;
532 #endif
533                         s_nbio_test=1;
534                         }
535                 else if (strcmp(*argv,"-debug") == 0)
536                         { s_debug=1; }
537                 else if (strcmp(*argv,"-hack") == 0)
538                         { hack=1; }
539                 else if (strcmp(*argv,"-state") == 0)
540                         { state=1; }
541                 else if (strcmp(*argv,"-crlf") == 0)
542                         { s_crlf=1; }
543                 else if (strcmp(*argv,"-quiet") == 0)
544                         { s_quiet=1; }
545                 else if (strcmp(*argv,"-bugs") == 0)
546                         { bugs=1; }
547                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
548                         { no_tmp_rsa=1; }
549                 else if (strcmp(*argv,"-no_dhe") == 0)
550                         { no_dhe=1; }
551                 else if (strcmp(*argv,"-www") == 0)
552                         { www=1; }
553                 else if (strcmp(*argv,"-WWW") == 0)
554                         { www=2; }
555                 else if (strcmp(*argv,"-no_ssl2") == 0)
556                         { off|=SSL_OP_NO_SSLv2; }
557                 else if (strcmp(*argv,"-no_ssl3") == 0)
558                         { off|=SSL_OP_NO_SSLv3; }
559                 else if (strcmp(*argv,"-no_tls1") == 0)
560                         { off|=SSL_OP_NO_TLSv1; }
561 #ifndef NO_SSL2
562                 else if (strcmp(*argv,"-ssl2") == 0)
563                         { meth=SSLv2_server_method(); }
564 #endif
565 #ifndef NO_SSL3
566                 else if (strcmp(*argv,"-ssl3") == 0)
567                         { meth=SSLv3_server_method(); }
568 #endif
569 #ifndef NO_TLS1
570                 else if (strcmp(*argv,"-tls1") == 0)
571                         { meth=TLSv1_server_method(); }
572 #endif
573                 else if (strcmp(*argv,"-engine") == 0)
574                         {
575                         if (--argc < 1) goto bad;
576                         engine_id= *(++argv);
577                         }
578                 else
579                         {
580                         BIO_printf(bio_err,"unknown option %s\n",*argv);
581                         badop=1;
582                         break;
583                         }
584                 argc--;
585                 argv++;
586                 }
587         if (badop)
588                 {
589 bad:
590                 sv_usage();
591                 goto end;
592                 }
593
594         app_RAND_load_file(NULL, bio_err, 0);
595
596         if (bio_s_out == NULL)
597                 {
598                 if (s_quiet && !s_debug)
599                         {
600                         bio_s_out=BIO_new(BIO_s_null());
601                         }
602                 else
603                         {
604                         if (bio_s_out == NULL)
605                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
606                         }
607                 }
608
609 #if !defined(NO_RSA) || !defined(NO_DSA)
610         if (nocert)
611 #endif
612                 {
613                 s_cert_file=NULL;
614                 s_key_file=NULL;
615                 s_dcert_file=NULL;
616                 s_dkey_file=NULL;
617                 }
618
619         SSL_load_error_strings();
620         OpenSSL_add_ssl_algorithms();
621
622         if (engine_id != NULL)
623                 {
624                 if((e = ENGINE_by_id(engine_id)) == NULL)
625                         {
626                         BIO_printf(bio_err,"invalid engine\n");
627                         ERR_print_errors(bio_err);
628                         goto end;
629                         }
630                 if (s_debug)
631                         {
632                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
633                                 0, bio_err, 0);
634                         }
635                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
636                         {
637                         BIO_printf(bio_err,"can't use that engine\n");
638                         ERR_print_errors(bio_err);
639                         goto end;
640                         }
641                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine_id);
642                 ENGINE_free(e);
643                 }
644
645         ctx=SSL_CTX_new(meth);
646         if (ctx == NULL)
647                 {
648                 ERR_print_errors(bio_err);
649                 goto end;
650                 }
651
652         SSL_CTX_set_quiet_shutdown(ctx,1);
653         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
654         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
655         SSL_CTX_set_options(ctx,off);
656         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
657
658         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
659
660         SSL_CTX_sess_set_cache_size(ctx,128);
661
662 #if 0
663         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
664 #endif
665
666 #if 0
667         if (s_cert_file == NULL)
668                 {
669                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
670                 goto end;
671                 }
672 #endif
673
674         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
675                 (!SSL_CTX_set_default_verify_paths(ctx)))
676                 {
677                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
678                 ERR_print_errors(bio_err);
679                 /* goto end; */
680                 }
681
682 #ifndef NO_DH
683         if (!no_dhe)
684                 {
685                 DH *dh=NULL;
686
687                 if (dhfile)
688                         dh = load_dh_param(dhfile);
689                 else if (s_cert_file)
690                         dh = load_dh_param(s_cert_file);
691
692                 if (dh != NULL)
693                         {
694                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
695                         }
696                 else
697                         {
698                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
699                         dh=get_dh512();
700                         }
701                 (void)BIO_flush(bio_s_out);
702
703                 SSL_CTX_set_tmp_dh(ctx,dh);
704                 DH_free(dh);
705                 }
706 #endif
707         
708         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
709                 goto end;
710         if (s_dcert_file != NULL)
711                 {
712                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
713                         goto end;
714                 }
715
716 #ifndef NO_RSA
717 #if 1
718         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
719 #else
720         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
721                 {
722                 RSA *rsa;
723
724                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
725                 BIO_flush(bio_s_out);
726
727                 rsa=RSA_generate_key(512,RSA_F4,NULL);
728
729                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
730                         {
731                         ERR_print_errors(bio_err);
732                         goto end;
733                         }
734                 RSA_free(rsa);
735                 BIO_printf(bio_s_out,"\n");
736                 }
737 #endif
738 #endif
739
740         if (cipher != NULL)
741                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
742                 BIO_printf(bio_err,"error setting cipher list\n");
743                 ERR_print_errors(bio_err);
744                 goto end;
745         }
746         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
747         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
748                 sizeof s_server_session_id_context);
749
750         if (CAfile != NULL)
751             SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
752
753         BIO_printf(bio_s_out,"ACCEPT\n");
754         if (www)
755                 do_server(port,&accept_socket,www_body, context);
756         else
757                 do_server(port,&accept_socket,sv_body, context);
758         print_stats(bio_s_out,ctx);
759         ret=0;
760 end:
761         if (ctx != NULL) SSL_CTX_free(ctx);
762         if (bio_s_out != NULL)
763                 {
764                 BIO_free(bio_s_out);
765                 bio_s_out=NULL;
766                 }
767         EXIT(ret);
768         }
769
770 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
771         {
772         BIO_printf(bio,"%4ld items in the session cache\n",
773                 SSL_CTX_sess_number(ssl_ctx));
774         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
775                 SSL_CTX_sess_connect(ssl_ctx));
776         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
777                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
778         BIO_printf(bio,"%4d client connects that finished\n",
779                 SSL_CTX_sess_connect_good(ssl_ctx));
780         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
781                 SSL_CTX_sess_accept(ssl_ctx));
782         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
783                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
784         BIO_printf(bio,"%4d server accepts that finished\n",
785                 SSL_CTX_sess_accept_good(ssl_ctx));
786         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
787         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
788         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
789         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
790         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
791                 SSL_CTX_sess_cache_full(ssl_ctx),
792                 SSL_CTX_sess_get_cache_size(ssl_ctx));
793         }
794
795 static int sv_body(char *hostname, int s, unsigned char *context)
796         {
797         char *buf=NULL;
798         fd_set readfds;
799         int ret=1,width;
800         int k,i;
801         unsigned long l;
802         SSL *con=NULL;
803         BIO *sbio;
804 #ifdef WINDOWS
805         struct timeval tv;
806 #endif
807
808         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
809                 {
810                 BIO_printf(bio_err,"out of memory\n");
811                 goto err;
812                 }
813 #ifdef FIONBIO  
814         if (s_nbio)
815                 {
816                 unsigned long sl=1;
817
818                 if (!s_quiet)
819                         BIO_printf(bio_err,"turning on non blocking io\n");
820                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
821                         ERR_print_errors(bio_err);
822                 }
823 #endif
824
825         if (con == NULL) {
826                 con=SSL_new(ctx);
827 #ifndef NO_KRB5
828                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
829                         {
830                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
831                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
832                         }
833 #endif  /* NO_KRB5 */
834                 if(context)
835                       SSL_set_session_id_context(con, context,
836                                                  strlen((char *)context));
837         }
838         SSL_clear(con);
839
840         sbio=BIO_new_socket(s,BIO_NOCLOSE);
841         if (s_nbio_test)
842                 {
843                 BIO *test;
844
845                 test=BIO_new(BIO_f_nbio_test());
846                 sbio=BIO_push(test,sbio);
847                 }
848         SSL_set_bio(con,sbio,sbio);
849         SSL_set_accept_state(con);
850         /* SSL_set_fd(con,s); */
851
852         if (s_debug)
853                 {
854                 con->debug=1;
855                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
856                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
857                 }
858
859         width=s+1;
860         for (;;)
861                 {
862                 int read_from_terminal;
863                 int read_from_sslcon;
864
865                 read_from_terminal = 0;
866                 read_from_sslcon = SSL_pending(con);
867
868                 if (!read_from_sslcon)
869                         {
870                         FD_ZERO(&readfds);
871 #ifndef WINDOWS
872                         FD_SET(fileno(stdin),&readfds);
873 #endif
874                         FD_SET(s,&readfds);
875                         /* Note: under VMS with SOCKETSHR the second parameter is
876                          * currently of type (int *) whereas under other systems
877                          * it is (void *) if you don't have a cast it will choke
878                          * the compiler: if you do have a cast then you can either
879                          * go for (int *) or (void *).
880                          */
881 #ifdef WINDOWS
882                         /* Under Windows we can't select on stdin: only
883                          * on sockets. As a workaround we timeout the select every
884                          * second and check for any keypress. In a proper Windows
885                          * application we wouldn't do this because it is inefficient.
886                          */
887                         tv.tv_sec = 1;
888                         tv.tv_usec = 0;
889                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
890                         if((i < 0) || (!i && !_kbhit() ) )continue;
891                         if(_kbhit())
892                                 read_from_terminal = 1;
893 #else
894                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
895                         if (i <= 0) continue;
896                         if (FD_ISSET(fileno(stdin),&readfds))
897                                 read_from_terminal = 1;
898 #endif
899                         if (FD_ISSET(s,&readfds))
900                                 read_from_sslcon = 1;
901                         }
902                 if (read_from_terminal)
903                         {
904                         if (s_crlf)
905                                 {
906                                 int j, lf_num;
907
908                                 i=read(fileno(stdin), buf, bufsize/2);
909                                 lf_num = 0;
910                                 /* both loops are skipped when i <= 0 */
911                                 for (j = 0; j < i; j++)
912                                         if (buf[j] == '\n')
913                                                 lf_num++;
914                                 for (j = i-1; j >= 0; j--)
915                                         {
916                                         buf[j+lf_num] = buf[j];
917                                         if (buf[j] == '\n')
918                                                 {
919                                                 lf_num--;
920                                                 i++;
921                                                 buf[j+lf_num] = '\r';
922                                                 }
923                                         }
924                                 assert(lf_num == 0);
925                                 }
926                         else
927                                 i=read(fileno(stdin),buf,bufsize);
928                         if (!s_quiet)
929                                 {
930                                 if ((i <= 0) || (buf[0] == 'Q'))
931                                         {
932                                         BIO_printf(bio_s_out,"DONE\n");
933                                         SHUTDOWN(s);
934                                         close_accept_socket();
935                                         ret= -11;
936                                         goto err;
937                                         }
938                                 if ((i <= 0) || (buf[0] == 'q'))
939                                         {
940                                         BIO_printf(bio_s_out,"DONE\n");
941                                         SHUTDOWN(s);
942         /*                              close_accept_socket();
943                                         ret= -11;*/
944                                         goto err;
945                                         }
946                                 if ((buf[0] == 'r') && 
947                                         ((buf[1] == '\n') || (buf[1] == '\r')))
948                                         {
949                                         SSL_renegotiate(con);
950                                         i=SSL_do_handshake(con);
951                                         printf("SSL_do_handshake -> %d\n",i);
952                                         i=0; /*13; */
953                                         continue;
954                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
955                                         }
956                                 if ((buf[0] == 'R') &&
957                                         ((buf[1] == '\n') || (buf[1] == '\r')))
958                                         {
959                                         SSL_set_verify(con,
960                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
961                                         SSL_renegotiate(con);
962                                         i=SSL_do_handshake(con);
963                                         printf("SSL_do_handshake -> %d\n",i);
964                                         i=0; /* 13; */
965                                         continue;
966                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
967                                         }
968                                 if (buf[0] == 'P')
969                                         {
970                                         static char *str="Lets print some clear text\n";
971                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
972                                         }
973                                 if (buf[0] == 'S')
974                                         {
975                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
976                                         }
977                                 }
978 #ifdef CHARSET_EBCDIC
979                         ebcdic2ascii(buf,buf,i);
980 #endif
981                         l=k=0;
982                         for (;;)
983                                 {
984                                 /* should do a select for the write */
985 #ifdef RENEG
986 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
987 #endif
988                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
989                                 switch (SSL_get_error(con,k))
990                                         {
991                                 case SSL_ERROR_NONE:
992                                         break;
993                                 case SSL_ERROR_WANT_WRITE:
994                                 case SSL_ERROR_WANT_READ:
995                                 case SSL_ERROR_WANT_X509_LOOKUP:
996                                         BIO_printf(bio_s_out,"Write BLOCK\n");
997                                         break;
998                                 case SSL_ERROR_SYSCALL:
999                                 case SSL_ERROR_SSL:
1000                                         BIO_printf(bio_s_out,"ERROR\n");
1001                                         ERR_print_errors(bio_err);
1002                                         ret=1;
1003                                         goto err;
1004                                         /* break; */
1005                                 case SSL_ERROR_ZERO_RETURN:
1006                                         BIO_printf(bio_s_out,"DONE\n");
1007                                         ret=1;
1008                                         goto err;
1009                                         }
1010                                 l+=k;
1011                                 i-=k;
1012                                 if (i <= 0) break;
1013                                 }
1014                         }
1015                 if (read_from_sslcon)
1016                         {
1017                         if (!SSL_is_init_finished(con))
1018                                 {
1019                                 i=init_ssl_connection(con);
1020                                 
1021                                 if (i < 0)
1022                                         {
1023                                         ret=0;
1024                                         goto err;
1025                                         }
1026                                 else if (i == 0)
1027                                         {
1028                                         ret=1;
1029                                         goto err;
1030                                         }
1031                                 }
1032                         else
1033                                 {
1034 again:  
1035                                 i=SSL_read(con,(char *)buf,bufsize);
1036                                 switch (SSL_get_error(con,i))
1037                                         {
1038                                 case SSL_ERROR_NONE:
1039 #ifdef CHARSET_EBCDIC
1040                                         ascii2ebcdic(buf,buf,i);
1041 #endif
1042                                         write(fileno(stdout),buf,
1043                                                 (unsigned int)i);
1044                                         if (SSL_pending(con)) goto again;
1045                                         break;
1046                                 case SSL_ERROR_WANT_WRITE:
1047                                 case SSL_ERROR_WANT_READ:
1048                                 case SSL_ERROR_WANT_X509_LOOKUP:
1049                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1050                                         break;
1051                                 case SSL_ERROR_SYSCALL:
1052                                 case SSL_ERROR_SSL:
1053                                         BIO_printf(bio_s_out,"ERROR\n");
1054                                         ERR_print_errors(bio_err);
1055                                         ret=1;
1056                                         goto err;
1057                                 case SSL_ERROR_ZERO_RETURN:
1058                                         BIO_printf(bio_s_out,"DONE\n");
1059                                         ret=1;
1060                                         goto err;
1061                                         }
1062                                 }
1063                         }
1064                 }
1065 err:
1066         BIO_printf(bio_s_out,"shutting down SSL\n");
1067 #if 1
1068         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1069 #else
1070         SSL_shutdown(con);
1071 #endif
1072         if (con != NULL) SSL_free(con);
1073         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1074         if (buf != NULL)
1075                 {
1076                 memset(buf,0,bufsize);
1077                 OPENSSL_free(buf);
1078                 }
1079         if (ret >= 0)
1080                 BIO_printf(bio_s_out,"ACCEPT\n");
1081         return(ret);
1082         }
1083
1084 static void close_accept_socket(void)
1085         {
1086         BIO_printf(bio_err,"shutdown accept socket\n");
1087         if (accept_socket >= 0)
1088                 {
1089                 SHUTDOWN2(accept_socket);
1090                 }
1091         }
1092
1093 static int init_ssl_connection(SSL *con)
1094         {
1095         int i;
1096         const char *str;
1097         X509 *peer;
1098         long verify_error;
1099         MS_STATIC char buf[BUFSIZ];
1100
1101         if ((i=SSL_accept(con)) <= 0)
1102                 {
1103                 if (BIO_sock_should_retry(i))
1104                         {
1105                         BIO_printf(bio_s_out,"DELAY\n");
1106                         return(1);
1107                         }
1108
1109                 BIO_printf(bio_err,"ERROR\n");
1110                 verify_error=SSL_get_verify_result(con);
1111                 if (verify_error != X509_V_OK)
1112                         {
1113                         BIO_printf(bio_err,"verify error:%s\n",
1114                                 X509_verify_cert_error_string(verify_error));
1115                         }
1116                 else
1117                         ERR_print_errors(bio_err);
1118                 return(0);
1119                 }
1120
1121         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1122
1123         peer=SSL_get_peer_certificate(con);
1124         if (peer != NULL)
1125                 {
1126                 BIO_printf(bio_s_out,"Client certificate\n");
1127                 PEM_write_bio_X509(bio_s_out,peer);
1128                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
1129                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1130                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
1131                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1132                 X509_free(peer);
1133                 }
1134
1135         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
1136                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1137         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1138         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1139         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1140         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1141                 TLS1_FLAGS_TLS_PADDING_BUG)
1142                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1143
1144         return(1);
1145         }
1146
1147 #ifndef NO_DH
1148 static DH *load_dh_param(char *dhfile)
1149         {
1150         DH *ret=NULL;
1151         BIO *bio;
1152
1153         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1154                 goto err;
1155         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1156 err:
1157         if (bio != NULL) BIO_free(bio);
1158         return(ret);
1159         }
1160 #endif
1161
1162 #if 0
1163 static int load_CA(SSL_CTX *ctx, char *file)
1164         {
1165         FILE *in;
1166         X509 *x=NULL;
1167
1168         if ((in=fopen(file,"r")) == NULL)
1169                 return(0);
1170
1171         for (;;)
1172                 {
1173                 if (PEM_read_X509(in,&x,NULL) == NULL)
1174                         break;
1175                 SSL_CTX_add_client_CA(ctx,x);
1176                 }
1177         if (x != NULL) X509_free(x);
1178         fclose(in);
1179         return(1);
1180         }
1181 #endif
1182
1183 static int www_body(char *hostname, int s, unsigned char *context)
1184         {
1185         char *buf=NULL;
1186         int ret=1;
1187         int i,j,k,blank,dot;
1188         struct stat st_buf;
1189         SSL *con;
1190         SSL_CIPHER *c;
1191         BIO *io,*ssl_bio,*sbio;
1192         long total_bytes;
1193
1194         buf=OPENSSL_malloc(bufsize);
1195         if (buf == NULL) return(0);
1196         io=BIO_new(BIO_f_buffer());
1197         ssl_bio=BIO_new(BIO_f_ssl());
1198         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1199
1200 #ifdef FIONBIO  
1201         if (s_nbio)
1202                 {
1203                 unsigned long sl=1;
1204
1205                 if (!s_quiet)
1206                         BIO_printf(bio_err,"turning on non blocking io\n");
1207                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1208                         ERR_print_errors(bio_err);
1209                 }
1210 #endif
1211
1212         /* lets make the output buffer a reasonable size */
1213         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1214
1215         if ((con=SSL_new(ctx)) == NULL) goto err;
1216         if(context) SSL_set_session_id_context(con, context,
1217                                                strlen((char *)context));
1218
1219         sbio=BIO_new_socket(s,BIO_NOCLOSE);
1220         if (s_nbio_test)
1221                 {
1222                 BIO *test;
1223
1224                 test=BIO_new(BIO_f_nbio_test());
1225                 sbio=BIO_push(test,sbio);
1226                 }
1227         SSL_set_bio(con,sbio,sbio);
1228         SSL_set_accept_state(con);
1229
1230         /* SSL_set_fd(con,s); */
1231         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1232         BIO_push(io,ssl_bio);
1233 #ifdef CHARSET_EBCDIC
1234         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
1235 #endif
1236
1237         if (s_debug)
1238                 {
1239                 con->debug=1;
1240                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
1241                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1242                 }
1243
1244         blank=0;
1245         for (;;)
1246                 {
1247                 if (hack)
1248                         {
1249                         i=SSL_accept(con);
1250
1251                         switch (SSL_get_error(con,i))
1252                                 {
1253                         case SSL_ERROR_NONE:
1254                                 break;
1255                         case SSL_ERROR_WANT_WRITE:
1256                         case SSL_ERROR_WANT_READ:
1257                         case SSL_ERROR_WANT_X509_LOOKUP:
1258                                 continue;
1259                         case SSL_ERROR_SYSCALL:
1260                         case SSL_ERROR_SSL:
1261                         case SSL_ERROR_ZERO_RETURN:
1262                                 ret=1;
1263                                 goto err;
1264                                 /* break; */
1265                                 }
1266
1267                         SSL_renegotiate(con);
1268                         SSL_write(con,NULL,0);
1269                         }
1270
1271                 i=BIO_gets(io,buf,bufsize-1);
1272                 if (i < 0) /* error */
1273                         {
1274                         if (!BIO_should_retry(io))
1275                                 {
1276                                 if (!s_quiet)
1277                                         ERR_print_errors(bio_err);
1278                                 goto err;
1279                                 }
1280                         else
1281                                 {
1282                                 BIO_printf(bio_s_out,"read R BLOCK\n");
1283 #ifndef MSDOS
1284                                 sleep(1);
1285 #endif
1286                                 continue;
1287                                 }
1288                         }
1289                 else if (i == 0) /* end of input */
1290                         {
1291                         ret=1;
1292                         goto end;
1293                         }
1294
1295                 /* else we have data */
1296                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1297                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1298                         {
1299                         char *p;
1300                         X509 *peer;
1301                         STACK_OF(SSL_CIPHER) *sk;
1302                         static char *space="                          ";
1303
1304                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1305                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
1306                         BIO_puts(io,"<pre>\n");
1307 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1308                         BIO_puts(io,"\n");
1309                         for (i=0; i<local_argc; i++)
1310                                 {
1311                                 BIO_puts(io,local_argv[i]);
1312                                 BIO_write(io," ",1);
1313                                 }
1314                         BIO_puts(io,"\n");
1315
1316                         /* The following is evil and should not really
1317                          * be done */
1318                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1319                         sk=SSL_get_ciphers(con);
1320                         j=sk_SSL_CIPHER_num(sk);
1321                         for (i=0; i<j; i++)
1322                                 {
1323                                 c=sk_SSL_CIPHER_value(sk,i);
1324                                 BIO_printf(io,"%-11s:%-25s",
1325                                         SSL_CIPHER_get_version(c),
1326                                         SSL_CIPHER_get_name(c));
1327                                 if ((((i+1)%2) == 0) && (i+1 != j))
1328                                         BIO_puts(io,"\n");
1329                                 }
1330                         BIO_puts(io,"\n");
1331                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1332                         if (p != NULL)
1333                                 {
1334                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1335                                 j=i=0;
1336                                 while (*p)
1337                                         {
1338                                         if (*p == ':')
1339                                                 {
1340                                                 BIO_write(io,space,26-j);
1341                                                 i++;
1342                                                 j=0;
1343                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1344                                                 }
1345                                         else
1346                                                 {
1347                                                 BIO_write(io,p,1);
1348                                                 j++;
1349                                                 }
1350                                         p++;
1351                                         }
1352                                 BIO_puts(io,"\n");
1353                                 }
1354                         BIO_printf(io,((con->hit)
1355                                 ?"---\nReused, "
1356                                 :"---\nNew, "));
1357                         c=SSL_get_current_cipher(con);
1358                         BIO_printf(io,"%s, Cipher is %s\n",
1359                                 SSL_CIPHER_get_version(c),
1360                                 SSL_CIPHER_get_name(c));
1361                         SSL_SESSION_print(io,SSL_get_session(con));
1362                         BIO_printf(io,"---\n");
1363                         print_stats(io,SSL_get_SSL_CTX(con));
1364                         BIO_printf(io,"---\n");
1365                         peer=SSL_get_peer_certificate(con);
1366                         if (peer != NULL)
1367                                 {
1368                                 BIO_printf(io,"Client certificate\n");
1369                                 X509_print(io,peer);
1370                                 PEM_write_bio_X509(io,peer);
1371                                 }
1372                         else
1373                                 BIO_puts(io,"no client certificate available\n");
1374                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1375                         break;
1376                         }
1377                 else if ((www == 2) && (strncmp("GET /",buf,5) == 0))
1378                         {
1379                         BIO *file;
1380                         char *p,*e;
1381                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1382
1383                         /* skip the '/' */
1384                         p= &(buf[5]);
1385                         dot=0;
1386                         for (e=p; *e != '\0'; e++)
1387                                 {
1388                                 if (e[0] == ' ') break;
1389                                 if (    (e[0] == '.') &&
1390                                         (strncmp(&(e[-1]),"/../",4) == 0))
1391                                         dot=1;
1392                                 }
1393                         
1394
1395                         if (*e == '\0')
1396                                 {
1397                                 BIO_puts(io,text);
1398                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1399                                 break;
1400                                 }
1401                         *e='\0';
1402
1403                         if (dot)
1404                                 {
1405                                 BIO_puts(io,text);
1406                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1407                                 break;
1408                                 }
1409
1410                         if (*p == '/')
1411                                 {
1412                                 BIO_puts(io,text);
1413                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1414                                 break;
1415                                 }
1416
1417                         /* append if a directory lookup */
1418                         if (e[-1] == '/')
1419                                 strcat(p,"index.html");
1420
1421                         /* if a directory, do the index thang */
1422                         if (stat(p,&st_buf) < 0)
1423                                 {
1424                                 BIO_puts(io,text);
1425                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1426                                 ERR_print_errors(io);
1427                                 break;
1428                                 }
1429                         if (S_ISDIR(st_buf.st_mode))
1430                                 {
1431                                 strcat(p,"/index.html");
1432                                 }
1433
1434                         if ((file=BIO_new_file(p,"r")) == NULL)
1435                                 {
1436                                 BIO_puts(io,text);
1437                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1438                                 ERR_print_errors(io);
1439                                 break;
1440                                 }
1441
1442                         if (!s_quiet)
1443                                 BIO_printf(bio_err,"FILE:%s\n",p);
1444
1445                         i=strlen(p);
1446                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1447                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1448                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1449                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1450                         else
1451                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1452                         /* send the file */
1453                         total_bytes=0;
1454                         for (;;)
1455                                 {
1456                                 i=BIO_read(file,buf,bufsize);
1457                                 if (i <= 0) break;
1458
1459 #ifdef RENEG
1460                                 total_bytes+=i;
1461                                 fprintf(stderr,"%d\n",i);
1462                                 if (total_bytes > 3*1024)
1463                                         {
1464                                         total_bytes=0;
1465                                         fprintf(stderr,"RENEGOTIATE\n");
1466                                         SSL_renegotiate(con);
1467                                         }
1468 #endif
1469
1470                                 for (j=0; j<i; )
1471                                         {
1472 #ifdef RENEG
1473 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1474 #endif
1475                                         k=BIO_write(io,&(buf[j]),i-j);
1476                                         if (k <= 0)
1477                                                 {
1478                                                 if (!BIO_should_retry(io))
1479                                                         goto write_error;
1480                                                 else
1481                                                         {
1482                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1483                                                         }
1484                                                 }
1485                                         else
1486                                                 {
1487                                                 j+=k;
1488                                                 }
1489                                         }
1490                                 }
1491 write_error:
1492                         BIO_free(file);
1493                         break;
1494                         }
1495                 }
1496
1497         for (;;)
1498                 {
1499                 i=(int)BIO_flush(io);
1500                 if (i <= 0)
1501                         {
1502                         if (!BIO_should_retry(io))
1503                                 break;
1504                         }
1505                 else
1506                         break;
1507                 }
1508 end:
1509 #if 1
1510         /* make sure we re-use sessions */
1511         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1512 #else
1513         /* This kills performance */
1514 /*      SSL_shutdown(con); A shutdown gets sent in the
1515  *      BIO_free_all(io) procession */
1516 #endif
1517
1518 err:
1519
1520         if (ret >= 0)
1521                 BIO_printf(bio_s_out,"ACCEPT\n");
1522
1523         if (buf != NULL) OPENSSL_free(buf);
1524         if (io != NULL) BIO_free_all(io);
1525 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1526         return(ret);
1527         }
1528
1529 #ifndef NO_RSA
1530 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1531         {
1532         static RSA *rsa_tmp=NULL;
1533
1534         if (rsa_tmp == NULL)
1535                 {
1536                 if (!s_quiet)
1537                         {
1538                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1539                         (void)BIO_flush(bio_err);
1540                         }
1541                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1542                 if (!s_quiet)
1543                         {
1544                         BIO_printf(bio_err,"\n");
1545                         (void)BIO_flush(bio_err);
1546                         }
1547                 }
1548         return(rsa_tmp);
1549         }
1550 #endif