c0546f6f9b0ea0529322bf758c70d4c0ad6e181f
[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 <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <sys/types.h>
63 #include <sys/stat.h>
64 #ifdef NO_STDIO
65 #define APPS_WIN16
66 #endif
67 #include "lhash.h"
68 #include "bn.h"
69 #define USE_SOCKETS
70 #include "apps.h"
71 #include "err.h"
72 #include "pem.h"
73 #include "x509.h"
74 #include "ssl.h"
75 #include "s_apps.h"
76
77 #ifndef NOPROTO
78 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export);
79 static int sv_body(char *hostname, int s);
80 static int www_body(char *hostname, int s);
81 static void close_accept_socket(void );
82 static void sv_usage(void);
83 static int init_ssl_connection(SSL *s);
84 static void print_stats(BIO *bp,SSL_CTX *ctx);
85 #ifndef NO_DH
86 static DH *load_dh_param(void );
87 static DH *get_dh512(void);
88 #endif
89 /* static void s_server_init(void);*/
90 #else
91 static RSA MS_CALLBACK *tmp_rsa_cb();
92 static int sv_body();
93 static int www_body();
94 static void close_accept_socket();
95 static void sv_usage();
96 static int init_ssl_connection();
97 static void print_stats();
98 #ifndef NO_DH
99 static DH *load_dh_param();
100 static DH *get_dh512();
101 #endif
102 /* static void s_server_init(); */
103 #endif
104
105
106 #ifndef S_ISDIR
107 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
108 #endif
109
110 #ifndef NO_DH
111 static unsigned char dh512_p[]={
112         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
113         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
114         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
115         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
116         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
117         0x47,0x74,0xE8,0x33,
118         };
119 static unsigned char dh512_g[]={
120         0x02,
121         };
122
123 static DH *get_dh512()
124         {
125         DH *dh=NULL;
126
127         if ((dh=DH_new()) == NULL) return(NULL);
128         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
129         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
130         if ((dh->p == NULL) || (dh->g == NULL))
131                 return(NULL);
132         return(dh);
133         }
134 #endif
135
136 /* static int load_CA(SSL_CTX *ctx, char *file);*/
137
138 #undef BUFSIZZ
139 #define BUFSIZZ 16*1024
140 static int bufsize=32;
141 static int accept_socket= -1;
142
143 #define TEST_CERT       "server.pem"
144 #undef PROG
145 #define PROG            s_server_main
146
147 #define DH_PARAM        "server.pem"
148
149 extern int verify_depth;
150
151 static char *cipher=NULL;
152 static int s_server_verify=SSL_VERIFY_NONE;
153 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
154 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
155 #ifdef FIONBIO
156 static int s_nbio=0;
157 #endif
158 static int s_nbio_test=0;
159 static SSL_CTX *ctx=NULL;
160 static int www=0;
161
162 static BIO *bio_s_out=NULL;
163 static int s_debug=0;
164 static int s_quiet=0;
165
166 #if 0
167 static void s_server_init()
168         {
169         cipher=NULL;
170         s_server_verify=SSL_VERIFY_NONE;
171         s_dcert_file=NULL;
172         s_dkey_file=NULL;
173         s_cert_file=TEST_CERT;
174         s_key_file=NULL;
175 #ifdef FIONBIO
176         s_nbio=0;
177 #endif
178         s_nbio_test=0;
179         ctx=NULL;
180         www=0;
181
182         bio_s_out=NULL;
183         s_debug=0;
184         s_quiet=0;
185         }
186 #endif
187
188 static void sv_usage()
189         {
190         BIO_printf(bio_err,"usage: s_server [args ...]\n");
191         BIO_printf(bio_err,"\n");
192         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
193         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
194         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
195         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
196         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
197         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
198         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
199 #ifdef FIONBIO
200         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
201 #endif
202         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
203         BIO_printf(bio_err," -debug        - Print more output\n");
204         BIO_printf(bio_err," -state        - Print the SSL states\n");
205         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
206         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
207         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
208         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
209         BIO_printf(bio_err," -quiet        - No server output\n");
210         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
211         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
212         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
213         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
214         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
215         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
216         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
217         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
218         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
219         BIO_printf(bio_err," -WWW          - Returns requested page from to a 'GET <path> HTTP/1.0'\n");
220         }
221
222 static int local_argc=0;
223 static char **local_argv;
224 static int hack=0;
225
226 int MAIN(argc, argv)
227 int argc;
228 char *argv[];
229         {
230         short port=PORT;
231         char *CApath=NULL,*CAfile=NULL;
232         int badop=0,bugs=0;
233         int ret=1;
234         int off=0;
235         int no_tmp_rsa=0,nocert=0;
236         int state=0;
237         SSL_METHOD *meth=NULL;
238 #ifndef NO_DH
239         DH *dh=NULL;
240 #endif
241
242 #if !defined(NO_SSL2) && !defined(NO_SSL3)
243         meth=SSLv23_server_method();
244 #elif !defined(NO_SSL3)
245         meth=SSLv3_server_method();
246 #elif !defined(NO_SSL2)
247         meth=SSLv2_server_method();
248 #endif
249
250         local_argc=argc;
251         local_argv=argv;
252
253         apps_startup();
254         s_quiet=0;
255         s_debug=0;
256
257         if (bio_err == NULL)
258                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
259
260         verify_depth=0;
261 #ifdef FIONBIO
262         s_nbio=0;
263 #endif
264         s_nbio_test=0;
265
266         argc--;
267         argv++;
268
269         while (argc >= 1)
270                 {
271                 if      ((strcmp(*argv,"-port") == 0) ||
272                          (strcmp(*argv,"-accept") == 0))
273                         {
274                         if (--argc < 1) goto bad;
275                         if (!extract_port(*(++argv),&port))
276                                 goto bad;
277                         }
278                 else if (strcmp(*argv,"-verify") == 0)
279                         {
280                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
281                         if (--argc < 1) goto bad;
282                         verify_depth=atoi(*(++argv));
283                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
284                         }
285                 else if (strcmp(*argv,"-Verify") == 0)
286                         {
287                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
288                                 SSL_VERIFY_CLIENT_ONCE;
289                         if (--argc < 1) goto bad;
290                         verify_depth=atoi(*(++argv));
291                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
292                         }
293                 else if (strcmp(*argv,"-cert") == 0)
294                         {
295                         if (--argc < 1) goto bad;
296                         s_cert_file= *(++argv);
297                         }
298                 else if (strcmp(*argv,"-key") == 0)
299                         {
300                         if (--argc < 1) goto bad;
301                         s_key_file= *(++argv);
302                         }
303                 else if (strcmp(*argv,"-dcert") == 0)
304                         {
305                         if (--argc < 1) goto bad;
306                         s_dcert_file= *(++argv);
307                         }
308                 else if (strcmp(*argv,"-dkey") == 0)
309                         {
310                         if (--argc < 1) goto bad;
311                         s_dkey_file= *(++argv);
312                         }
313                 else if (strcmp(*argv,"-nocert") == 0)
314                         {
315                         nocert=1;
316                         }
317                 else if (strcmp(*argv,"-CApath") == 0)
318                         {
319                         if (--argc < 1) goto bad;
320                         CApath= *(++argv);
321                         }
322                 else if (strcmp(*argv,"-cipher") == 0)
323                         {
324                         if (--argc < 1) goto bad;
325                         cipher= *(++argv);
326                         }
327                 else if (strcmp(*argv,"-CAfile") == 0)
328                         {
329                         if (--argc < 1) goto bad;
330                         CAfile= *(++argv);
331                         }
332 #ifdef FIONBIO  
333                 else if (strcmp(*argv,"-nbio") == 0)
334                         { s_nbio=1; }
335 #endif
336                 else if (strcmp(*argv,"-nbio_test") == 0)
337                         {
338 #ifdef FIONBIO  
339                         s_nbio=1;
340 #endif
341                         s_nbio_test=1;
342                         }
343                 else if (strcmp(*argv,"-debug") == 0)
344                         { s_debug=1; }
345                 else if (strcmp(*argv,"-hack") == 0)
346                         { hack=1; }
347                 else if (strcmp(*argv,"-state") == 0)
348                         { state=1; }
349                 else if (strcmp(*argv,"-quiet") == 0)
350                         { s_quiet=1; }
351                 else if (strcmp(*argv,"-bugs") == 0)
352                         { bugs=1; }
353                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
354                         { no_tmp_rsa=1; }
355                 else if (strcmp(*argv,"-www") == 0)
356                         { www=1; }
357                 else if (strcmp(*argv,"-WWW") == 0)
358                         { www=2; }
359                 else if (strcmp(*argv,"-no_ssl2") == 0)
360                         { off|=SSL_OP_NO_SSLv2; }
361                 else if (strcmp(*argv,"-no_ssl3") == 0)
362                         { off|=SSL_OP_NO_SSLv3; }
363                 else if (strcmp(*argv,"-no_tls1") == 0)
364                         { off|=SSL_OP_NO_TLSv1; }
365 #ifndef NO_SSL2
366                 else if (strcmp(*argv,"-ssl2") == 0)
367                         { meth=SSLv2_server_method(); }
368 #endif
369 #ifndef NO_SSL3
370                 else if (strcmp(*argv,"-ssl3") == 0)
371                         { meth=SSLv3_server_method(); }
372 #endif
373 #ifndef NO_TLS1
374                 else if (strcmp(*argv,"-tls1") == 0)
375                         { meth=TLSv1_server_method(); }
376 #endif
377                 else
378                         {
379                         BIO_printf(bio_err,"unknown option %s\n",*argv);
380                         badop=1;
381                         break;
382                         }
383                 argc--;
384                 argv++;
385                 }
386         if (badop)
387                 {
388 bad:
389                 sv_usage();
390                 goto end;
391                 }
392
393         if (bio_s_out == NULL)
394                 {
395                 if (s_quiet && !s_debug)
396                         {
397                         bio_s_out=BIO_new(BIO_s_null());
398                         }
399                 else
400                         {
401                         if (bio_s_out == NULL)
402                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
403                         }
404                 }
405
406 #if !defined(NO_RSA) || !defined(NO_DSA)
407         if (nocert)
408 #endif
409                 {
410                 s_cert_file=NULL;
411                 s_key_file=NULL;
412                 s_dcert_file=NULL;
413                 s_dkey_file=NULL;
414                 }
415
416         SSL_load_error_strings();
417         SSLeay_add_ssl_algorithms();
418
419         ctx=SSL_CTX_new(meth);
420         if (ctx == NULL)
421                 {
422                 ERR_print_errors(bio_err);
423                 goto end;
424                 }
425
426         SSL_CTX_set_quiet_shutdown(ctx,1);
427         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
428         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
429         SSL_CTX_set_options(ctx,off);
430         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
431
432         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
433
434         SSL_CTX_sess_set_cache_size(ctx,128);
435
436 #if 0
437         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
438 #endif
439
440 #if 0
441         if (s_cert_file == NULL)
442                 {
443                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
444                 goto end;
445                 }
446 #endif
447
448         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
449                 (!SSL_CTX_set_default_verify_paths(ctx)))
450                 {
451                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
452                 ERR_print_errors(bio_err);
453                 /* goto end; */
454                 }
455
456 #ifndef NO_DH
457         /* EAY EAY EAY evil hack */
458         dh=load_dh_param();
459         if (dh != NULL)
460                 {
461                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
462                 }
463         else
464                 {
465                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
466                 dh=get_dh512();
467                 }
468         BIO_flush(bio_s_out);
469
470         SSL_CTX_set_tmp_dh(ctx,dh);
471         DH_free(dh);
472 #endif
473         
474         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
475                 goto end;
476         if (s_dcert_file != NULL)
477                 {
478                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
479                         goto end;
480                 }
481
482 #if 1
483         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
484 #else
485         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
486                 {
487                 RSA *rsa;
488
489                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
490                 BIO_flush(bio_s_out);
491
492                 rsa=RSA_generate_key(512,RSA_F4,NULL);
493
494                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
495                         {
496                         ERR_print_errors(bio_err);
497                         goto end;
498                         }
499                 RSA_free(rsa);
500                 BIO_printf(bio_s_out,"\n");
501                 }
502 #endif
503
504         if (cipher != NULL)
505                 SSL_CTX_set_cipher_list(ctx,cipher);
506         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
507
508         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
509
510         BIO_printf(bio_s_out,"ACCEPT\n");
511         if (www)
512                 do_server(port,&accept_socket,www_body);
513         else
514                 do_server(port,&accept_socket,sv_body);
515         print_stats(bio_s_out,ctx);
516         ret=0;
517 end:
518         if (ctx != NULL) SSL_CTX_free(ctx);
519         if (bio_s_out != NULL)
520                 {
521                 BIO_free(bio_s_out);
522                 bio_s_out=NULL;
523                 }
524         EXIT(ret);
525         }
526
527 static void print_stats(bio,ssl_ctx)
528 BIO *bio;
529 SSL_CTX *ssl_ctx;
530         {
531         BIO_printf(bio,"%4ld items in the session cache\n",
532                 SSL_CTX_sess_number(ssl_ctx));
533         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
534                 SSL_CTX_sess_connect(ssl_ctx));
535         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
536                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
537         BIO_printf(bio,"%4d client connects that finished\n",
538                 SSL_CTX_sess_connect_good(ssl_ctx));
539         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
540                 SSL_CTX_sess_accept(ssl_ctx));
541         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
542                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
543         BIO_printf(bio,"%4d server accepts that finished\n",
544                 SSL_CTX_sess_accept_good(ssl_ctx));
545         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
546         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
547         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
548         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
549         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
550                 SSL_CTX_sess_cache_full(ssl_ctx),
551                 SSL_CTX_sess_get_cache_size(ssl_ctx));
552         }
553
554 static int sv_body(hostname, s)
555 char *hostname;
556 int s;
557         {
558         char *buf=NULL;
559         fd_set readfds;
560         int ret=1,width;
561         int k,i;
562         unsigned long l;
563         SSL *con=NULL;
564         BIO *sbio;
565
566         if ((buf=Malloc(bufsize)) == NULL)
567                 {
568                 BIO_printf(bio_err,"out of memory\n");
569                 goto err;
570                 }
571 #ifdef FIONBIO  
572         if (s_nbio)
573                 {
574                 unsigned long sl=1;
575
576                 if (!s_quiet)
577                         BIO_printf(bio_err,"turning on non blocking io\n");
578                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
579                         ERR_print_errors(bio_err);
580                 }
581 #endif
582
583         if (con == NULL)
584                 con=(SSL *)SSL_new(ctx);
585         SSL_clear(con);
586
587         sbio=BIO_new_socket(s,BIO_NOCLOSE);
588         if (s_nbio_test)
589                 {
590                 BIO *test;
591
592                 test=BIO_new(BIO_f_nbio_test());
593                 sbio=BIO_push(test,sbio);
594                 }
595         SSL_set_bio(con,sbio,sbio);
596         SSL_set_accept_state(con);
597         /* SSL_set_fd(con,s); */
598
599         if (s_debug)
600                 {
601                 con->debug=1;
602                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
603                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
604                 }
605
606         width=s+1;
607         for (;;)
608                 {
609                 FD_ZERO(&readfds);
610 #ifndef WINDOWS
611                 FD_SET(fileno(stdin),&readfds);
612 #endif
613                 FD_SET(s,&readfds);
614                 i=select(width,&readfds,NULL,NULL,NULL);
615                 if (i <= 0) continue;
616                 if (FD_ISSET(fileno(stdin),&readfds))
617                         {
618                         i=read(fileno(stdin),buf,bufsize);
619                         if (!s_quiet)
620                                 {
621                                 if ((i <= 0) || (buf[0] == 'Q'))
622                                         {
623                                         BIO_printf(bio_s_out,"DONE\n");
624                                         SHUTDOWN(s);
625                                         close_accept_socket();
626                                         ret= -11;
627                                         goto err;
628                                         }
629                                 if ((i <= 0) || (buf[0] == 'q'))
630                                         {
631                                         BIO_printf(bio_s_out,"DONE\n");
632                                         SHUTDOWN(s);
633         /*                              close_accept_socket();
634                                         ret= -11;*/
635                                         goto err;
636                                         }
637                                 if ((buf[0] == 'r') && 
638                                         ((buf[1] == '\n') || (buf[1] == '\r')))
639                                         {
640                                         SSL_renegotiate(con);
641                                         i=SSL_do_handshake(con);
642                                         printf("SSL_do_handshake -> %d\n",i);
643                                         i=0; /*13; */
644                                         continue;
645                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
646                                         }
647                                 if ((buf[0] == 'R') &&
648                                         ((buf[1] == '\n') || (buf[1] == '\r')))
649                                         {
650                                         SSL_set_verify(con,
651                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
652                                         SSL_renegotiate(con);
653                                         i=SSL_do_handshake(con);
654                                         printf("SSL_do_handshake -> %d\n",i);
655                                         i=0; /* 13; */
656                                         continue;
657                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
658                                         }
659                                 if (buf[0] == 'P')
660                                         {
661                                         static char *str="Lets print some clear text\n";
662                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
663                                         }
664                                 if (buf[0] == 'S')
665                                         {
666                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
667                                         }
668                                 }
669                         l=k=0;
670                         for (;;)
671                                 {
672                                 /* should do a select for the write */
673 #ifdef RENEG
674 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
675 #endif
676                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
677                                 switch (SSL_get_error(con,k))
678                                         {
679                                 case SSL_ERROR_NONE:
680                                         break;
681                                 case SSL_ERROR_WANT_WRITE:
682                                 case SSL_ERROR_WANT_READ:
683                                 case SSL_ERROR_WANT_X509_LOOKUP:
684                                         BIO_printf(bio_s_out,"Write BLOCK\n");
685                                         break;
686                                 case SSL_ERROR_SYSCALL:
687                                 case SSL_ERROR_SSL:
688                                         BIO_printf(bio_s_out,"ERROR\n");
689                                         ERR_print_errors(bio_err);
690                                         ret=1;
691                                         goto err;
692                                         /* break; */
693                                 case SSL_ERROR_ZERO_RETURN:
694                                         BIO_printf(bio_s_out,"DONE\n");
695                                         ret=1;
696                                         goto err;
697                                         }
698                                 l+=k;
699                                 i-=k;
700                                 if (i <= 0) break;
701                                 }
702                         }
703                 if (FD_ISSET(s,&readfds))
704                         {
705                         if (!SSL_is_init_finished(con))
706                                 {
707                                 i=init_ssl_connection(con);
708                                 
709                                 if (i < 0)
710                                         {
711                                         ret=0;
712                                         goto err;
713                                         }
714                                 else if (i == 0)
715                                         {
716                                         ret=1;
717                                         goto err;
718                                         }
719                                 }
720                         else
721                                 {
722 again:  
723                                 i=SSL_read(con,(char *)buf,bufsize);
724                                 switch (SSL_get_error(con,i))
725                                         {
726                                 case SSL_ERROR_NONE:
727                                         write(fileno(stdout),buf,
728                                                 (unsigned int)i);
729                                         if (SSL_pending(con)) goto again;
730                                         break;
731                                 case SSL_ERROR_WANT_WRITE:
732                                 case SSL_ERROR_WANT_READ:
733                                 case SSL_ERROR_WANT_X509_LOOKUP:
734                                         BIO_printf(bio_s_out,"Read BLOCK\n");
735                                         break;
736                                 case SSL_ERROR_SYSCALL:
737                                 case SSL_ERROR_SSL:
738                                         BIO_printf(bio_s_out,"ERROR\n");
739                                         ERR_print_errors(bio_err);
740                                         ret=1;
741                                         goto err;
742                                 case SSL_ERROR_ZERO_RETURN:
743                                         BIO_printf(bio_s_out,"DONE\n");
744                                         ret=1;
745                                         goto err;
746                                         }
747                                 }
748                         }
749                 }
750 err:
751         BIO_printf(bio_s_out,"shutting down SSL\n");
752 #if 1
753         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
754 #else
755         SSL_shutdown(con);
756 #endif
757         if (con != NULL) SSL_free(con);
758         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
759         if (buf != NULL)
760                 {
761                 memset(buf,0,bufsize);
762                 Free(buf);
763                 }
764         if (ret >= 0)
765                 BIO_printf(bio_s_out,"ACCEPT\n");
766         return(ret);
767         }
768
769 static void close_accept_socket()
770         {
771         BIO_printf(bio_err,"shutdown accept socket\n");
772         if (accept_socket >= 0)
773                 {
774                 SHUTDOWN2(accept_socket);
775                 }
776         }
777
778 static int init_ssl_connection(con)
779 SSL *con;
780         {
781         int i;
782         char *str;
783         X509 *peer;
784         long verify_error;
785         MS_STATIC char buf[BUFSIZ];
786
787         if ((i=SSL_accept(con)) <= 0)
788                 {
789                 if (BIO_sock_should_retry(i))
790                         {
791                         BIO_printf(bio_s_out,"DELAY\n");
792                         return(1);
793                         }
794
795                 BIO_printf(bio_err,"ERROR\n");
796                 verify_error=SSL_get_verify_result(con);
797                 if (verify_error != X509_V_OK)
798                         {
799                         BIO_printf(bio_err,"verify error:%s\n",
800                                 X509_verify_cert_error_string(verify_error));
801                         }
802                 else
803                         ERR_print_errors(bio_err);
804                 return(0);
805                 }
806
807         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
808
809         peer=SSL_get_peer_certificate(con);
810         if (peer != NULL)
811                 {
812                 BIO_printf(bio_s_out,"Client certificate\n");
813                 PEM_write_bio_X509(bio_s_out,peer);
814                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
815                 BIO_printf(bio_s_out,"subject=%s\n",buf);
816                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
817                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
818                 X509_free(peer);
819                 }
820
821         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
822                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
823         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
824         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
825         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
826         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
827                 TLS1_FLAGS_TLS_PADDING_BUG)
828                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
829
830         return(1);
831         }
832
833 #ifndef NO_DH
834 static DH *load_dh_param()
835         {
836         DH *ret=NULL;
837         BIO *bio;
838
839         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
840                 goto err;
841         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
842 err:
843         if (bio != NULL) BIO_free(bio);
844         return(ret);
845         }
846 #endif
847
848 #if 0
849 static int load_CA(ctx,file)
850 SSL_CTX *ctx;
851 char *file;
852         {
853         FILE *in;
854         X509 *x=NULL;
855
856         if ((in=fopen(file,"r")) == NULL)
857                 return(0);
858
859         for (;;)
860                 {
861                 if (PEM_read_X509(in,&x,NULL) == NULL)
862                         break;
863                 SSL_CTX_add_client_CA(ctx,x);
864                 }
865         if (x != NULL) X509_free(x);
866         fclose(in);
867         return(1);
868         }
869 #endif
870
871 static int www_body(hostname, s)
872 char *hostname;
873 int s;
874         {
875         char *buf=NULL;
876         int ret=1;
877         int i,j,k,blank,dot;
878         struct stat st_buf;
879         SSL *con;
880         SSL_CIPHER *c;
881         BIO *io,*ssl_bio,*sbio;
882         long total_bytes;
883
884         buf=Malloc(bufsize);
885         if (buf == NULL) return(0);
886         io=BIO_new(BIO_f_buffer());
887         ssl_bio=BIO_new(BIO_f_ssl());
888         if ((io == NULL) || (ssl_bio == NULL)) goto err;
889
890 #ifdef FIONBIO  
891         if (s_nbio)
892                 {
893                 unsigned long sl=1;
894
895                 if (!s_quiet)
896                         BIO_printf(bio_err,"turning on non blocking io\n");
897                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
898                         ERR_print_errors(bio_err);
899                 }
900 #endif
901
902         /* lets make the output buffer a reasonable size */
903         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
904
905         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
906
907         sbio=BIO_new_socket(s,BIO_NOCLOSE);
908         if (s_nbio_test)
909                 {
910                 BIO *test;
911
912                 test=BIO_new(BIO_f_nbio_test());
913                 sbio=BIO_push(test,sbio);
914                 }
915         SSL_set_bio(con,sbio,sbio);
916         SSL_set_accept_state(con);
917
918         /* SSL_set_fd(con,s); */
919         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
920         BIO_push(io,ssl_bio);
921
922         if (s_debug)
923                 {
924                 con->debug=1;
925                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
926                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
927                 }
928
929         blank=0;
930         for (;;)
931                 {
932                 if (hack)
933                         {
934                         i=SSL_accept(con);
935
936                         switch (SSL_get_error(con,i))
937                                 {
938                         case SSL_ERROR_NONE:
939                                 break;
940                         case SSL_ERROR_WANT_WRITE:
941                         case SSL_ERROR_WANT_READ:
942                         case SSL_ERROR_WANT_X509_LOOKUP:
943                                 continue;
944                         case SSL_ERROR_SYSCALL:
945                         case SSL_ERROR_SSL:
946                         case SSL_ERROR_ZERO_RETURN:
947                                 ret=1;
948                                 goto err;
949                                 /* break; */
950                                 }
951
952                         SSL_renegotiate(con);
953                         SSL_write(con,NULL,0);
954                         }
955
956                 i=BIO_gets(io,buf,bufsize-1);
957                 if (i < 0) /* error */
958                         {
959                         if (!BIO_should_retry(io))
960                                 {
961                                 if (!s_quiet)
962                                         ERR_print_errors(bio_err);
963                                 goto err;
964                                 }
965                         else
966                                 {
967                                 BIO_printf(bio_s_out,"read R BLOCK\n");
968 #ifndef MSDOS
969                                 sleep(1);
970 #endif
971                                 continue;
972                                 }
973                         }
974                 else if (i == 0) /* end of input */
975                         {
976                         ret=1;
977                         goto end;
978                         }
979
980                 /* else we have data */
981                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
982                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
983                         {
984                         char *p;
985                         X509 *peer;
986                         STACK *sk;
987                         static char *space="                          ";
988
989                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
990                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
991                         BIO_puts(io,"<pre>\n");
992 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
993                         BIO_puts(io,"\n");
994                         for (i=0; i<local_argc; i++)
995                                 {
996                                 BIO_puts(io,local_argv[i]);
997                                 BIO_write(io," ",1);
998                                 }
999                         BIO_puts(io,"\n");
1000
1001                         /* The following is evil and should not really
1002                          * be done */
1003                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1004                         sk=SSL_get_ciphers(con);
1005                         j=sk_num(sk);
1006                         for (i=0; i<j; i++)
1007                                 {
1008                                 c=(SSL_CIPHER *)sk_value(sk,i);
1009                                 BIO_printf(io,"%-11s:%-25s",
1010                                         SSL_CIPHER_get_version(c),
1011                                         SSL_CIPHER_get_name(c));
1012                                 if ((((i+1)%2) == 0) && (i+1 != j))
1013                                         BIO_puts(io,"\n");
1014                                 }
1015                         BIO_puts(io,"\n");
1016                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1017                         if (p != NULL)
1018                                 {
1019                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1020                                 j=i=0;
1021                                 while (*p)
1022                                         {
1023                                         if (*p == ':')
1024                                                 {
1025                                                 BIO_write(io,space,26-j);
1026                                                 i++;
1027                                                 j=0;
1028                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1029                                                 }
1030                                         else
1031                                                 {
1032                                                 BIO_write(io,p,1);
1033                                                 j++;
1034                                                 }
1035                                         p++;
1036                                         }
1037                                 BIO_puts(io,"\n");
1038                                 }
1039                         BIO_printf(io,((con->hit)
1040                                 ?"---\nReused, "
1041                                 :"---\nNew, "));
1042                         c=SSL_get_current_cipher(con);
1043                         BIO_printf(io,"%s, Cipher is %s\n",
1044                                 SSL_CIPHER_get_version(c),
1045                                 SSL_CIPHER_get_name(c));
1046                         SSL_SESSION_print(io,SSL_get_session(con));
1047                         BIO_printf(io,"---\n");
1048                         print_stats(io,SSL_get_SSL_CTX(con));
1049                         BIO_printf(io,"---\n");
1050                         peer=SSL_get_peer_certificate(con);
1051                         if (peer != NULL)
1052                                 {
1053                                 BIO_printf(io,"Client certificate\n");
1054                                 X509_print(io,peer);
1055                                 PEM_write_bio_X509(io,peer);
1056                                 }
1057                         else
1058                                 BIO_puts(io,"no client certificate available\n");
1059                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1060                         break;
1061                         }
1062                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1063                         {
1064                         BIO *file;
1065                         char *p,*e;
1066                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1067
1068                         /* skip the '/' */
1069                         p= &(buf[5]);
1070                         dot=0;
1071                         for (e=p; *e != '\0'; e++)
1072                                 {
1073                                 if (e[0] == ' ') break;
1074                                 if (    (e[0] == '.') &&
1075                                         (strncmp(&(e[-1]),"/../",4) == 0))
1076                                         dot=1;
1077                                 }
1078                         
1079
1080                         if (*e == '\0')
1081                                 {
1082                                 BIO_puts(io,text);
1083                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1084                                 break;
1085                                 }
1086                         *e='\0';
1087
1088                         if (dot)
1089                                 {
1090                                 BIO_puts(io,text);
1091                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1092                                 break;
1093                                 }
1094
1095                         if (*p == '/')
1096                                 {
1097                                 BIO_puts(io,text);
1098                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1099                                 break;
1100                                 }
1101
1102                         /* append if a directory lookup */
1103                         if (e[-1] == '/')
1104                                 strcat(p,"index.html");
1105
1106                         /* if a directory, do the index thang */
1107                         if (stat(p,&st_buf) < 0)
1108                                 {
1109                                 BIO_puts(io,text);
1110                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1111                                 ERR_print_errors(io);
1112                                 break;
1113                                 }
1114                         if (S_ISDIR(st_buf.st_mode))
1115                                 {
1116                                 strcat(p,"/index.html");
1117                                 }
1118
1119                         if ((file=BIO_new_file(p,"r")) == NULL)
1120                                 {
1121                                 BIO_puts(io,text);
1122                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1123                                 ERR_print_errors(io);
1124                                 break;
1125                                 }
1126
1127                         if (!s_quiet)
1128                                 BIO_printf(bio_err,"FILE:%s\n",p);
1129
1130                         i=strlen(p);
1131                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1132                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1133                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1134                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1135                         else
1136                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1137                         /* send the file */
1138                         total_bytes=0;
1139                         for (;;)
1140                                 {
1141                                 i=BIO_read(file,buf,bufsize);
1142                                 if (i <= 0) break;
1143
1144 #ifdef RENEG
1145                                 total_bytes+=i;
1146                                 fprintf(stderr,"%d\n",i);
1147                                 if (total_bytes > 3*1024)
1148                                         {
1149                                         total_bytes=0;
1150                                         fprintf(stderr,"RENEGOTIATE\n");
1151                                         SSL_renegotiate(con);
1152                                         }
1153 #endif
1154
1155                                 for (j=0; j<i; )
1156                                         {
1157 #ifdef RENEG
1158 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1159 #endif
1160                                         k=BIO_write(io,&(buf[j]),i-j);
1161                                         if (k <= 0)
1162                                                 {
1163                                                 if (!BIO_should_retry(io))
1164                                                         goto write_error;
1165                                                 else
1166                                                         {
1167                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1168                                                         }
1169                                                 }
1170                                         else
1171                                                 {
1172                                                 j+=k;
1173                                                 }
1174                                         }
1175                                 }
1176 write_error:
1177                         BIO_free(file);
1178                         break;
1179                         }
1180                 }
1181
1182         for (;;)
1183                 {
1184                 i=(int)BIO_flush(io);
1185                 if (i <= 0)
1186                         {
1187                         if (!BIO_should_retry(io))
1188                                 break;
1189                         }
1190                 else
1191                         break;
1192                 }
1193 end:
1194 #if 1
1195         /* make sure we re-use sessions */
1196         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1197 #else
1198         /* This kills performace */
1199 /*      SSL_shutdown(con); A shutdown gets sent in the
1200  *      BIO_free_all(io) procession */
1201 #endif
1202
1203 err:
1204
1205         if (ret >= 0)
1206                 BIO_printf(bio_s_out,"ACCEPT\n");
1207
1208         if (buf != NULL) Free(buf);
1209         if (io != NULL) BIO_free_all(io);
1210 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1211         return(ret);
1212         }
1213
1214 static RSA MS_CALLBACK *tmp_rsa_cb(s,export)
1215 SSL *s;
1216 int export;
1217         {
1218         static RSA *rsa_tmp=NULL;
1219
1220         if (rsa_tmp == NULL)
1221                 {
1222                 if (!s_quiet)
1223                         {
1224                         BIO_printf(bio_err,"Generating temp (512 bit) RSA key...");
1225                         BIO_flush(bio_err);
1226                         }
1227 #ifndef NO_RSA
1228                 rsa_tmp=RSA_generate_key(512,RSA_F4,NULL,NULL);
1229 #endif
1230                 if (!s_quiet)
1231                         {
1232                         BIO_printf(bio_err,"\n");
1233                         BIO_flush(bio_err);
1234                         }
1235                 }
1236         return(rsa_tmp);
1237         }