VMS support.
[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 /* With IPv6, it looks like Digital has mixed up the proper order of
60    recursive header file inclusion, resulting in the compiler complaining
61    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
62    is needed to have fileno() declared correctly...  So let's define u_int */
63 #if defined(__DECC) && !defined(__U_INT)
64 #define __U_INT
65 typedef unsigned int u_int;
66 #endif
67
68 #include <stdio.h>
69 #include <stdlib.h>
70 #include <string.h>
71 #include <sys/types.h>
72 #include <sys/stat.h>
73 #ifdef NO_STDIO
74 #define APPS_WIN16
75 #endif
76 #include <openssl/lhash.h>
77 #include <openssl/bn.h>
78 #define USE_SOCKETS
79 #include "apps.h"
80 #include <openssl/err.h>
81 #include <openssl/pem.h>
82 #include <openssl/x509.h>
83 #include <openssl/ssl.h>
84 #include "s_apps.h"
85
86 #if (__VMS_VER < 70000000) /* FIONBIO used as a switch to enable ioctl,
87                               and that isn't in VMS < 7.0 */
88 #undef FIONBIO
89 #endif
90
91 #if defined(NO_RSA) && !defined(NO_SSL2)
92 #define NO_SSL2
93 #endif
94
95 #ifndef NO_RSA
96 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export,int keylength);
97 #endif
98 static int sv_body(char *hostname, int s, unsigned char *context);
99 static int www_body(char *hostname, int s, unsigned char *context);
100 static void close_accept_socket(void );
101 static void sv_usage(void);
102 static int init_ssl_connection(SSL *s);
103 static void print_stats(BIO *bp,SSL_CTX *ctx);
104 #ifndef NO_DH
105 static DH *load_dh_param(void );
106 static DH *get_dh512(void);
107 #endif
108 /* static void s_server_init(void);*/
109
110 #ifndef S_ISDIR
111 #if defined(VMS) && !defined(__DECC)
112 #define S_ISDIR(a)      (((a) & S_IFMT) == S_IFDIR)
113 #else
114 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
115 #endif
116 #endif
117
118 #ifndef NO_DH
119 static unsigned char dh512_p[]={
120         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
121         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
122         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
123         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
124         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
125         0x47,0x74,0xE8,0x33,
126         };
127 static unsigned char dh512_g[]={
128         0x02,
129         };
130
131 static DH *get_dh512(void)
132         {
133         DH *dh=NULL;
134
135         if ((dh=DH_new()) == NULL) return(NULL);
136         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
137         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
138         if ((dh->p == NULL) || (dh->g == NULL))
139                 return(NULL);
140         return(dh);
141         }
142 #endif
143
144 /* static int load_CA(SSL_CTX *ctx, char *file);*/
145
146 #undef BUFSIZZ
147 #define BUFSIZZ 16*1024
148 static int bufsize=32;
149 static int accept_socket= -1;
150
151 #define TEST_CERT       "server.pem"
152 #undef PROG
153 #define PROG            s_server_main
154
155 #define DH_PARAM        "server.pem"
156
157 extern int verify_depth;
158
159 static char *cipher=NULL;
160 static int s_server_verify=SSL_VERIFY_NONE;
161 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
162 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
163 #ifdef FIONBIO
164 static int s_nbio=0;
165 #endif
166 static int s_nbio_test=0;
167 static SSL_CTX *ctx=NULL;
168 static int www=0;
169
170 static BIO *bio_s_out=NULL;
171 static int s_debug=0;
172 static int s_quiet=0;
173
174 #if 0
175 static void s_server_init(void)
176         {
177         cipher=NULL;
178         s_server_verify=SSL_VERIFY_NONE;
179         s_dcert_file=NULL;
180         s_dkey_file=NULL;
181         s_cert_file=TEST_CERT;
182         s_key_file=NULL;
183 #ifdef FIONBIO
184         s_nbio=0;
185 #endif
186         s_nbio_test=0;
187         ctx=NULL;
188         www=0;
189
190         bio_s_out=NULL;
191         s_debug=0;
192         s_quiet=0;
193         }
194 #endif
195
196 static void sv_usage(void)
197         {
198         BIO_printf(bio_err,"usage: s_server [args ...]\n");
199         BIO_printf(bio_err,"\n");
200         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
201         BIO_printf(bio_err," -context arg  - set session ID context\n");
202         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
203         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
204         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
205         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
206         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
207         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
208         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
209         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
210 #ifdef FIONBIO
211         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
212 #endif
213         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
214         BIO_printf(bio_err," -debug        - Print more output\n");
215         BIO_printf(bio_err," -state        - Print the SSL states\n");
216         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
217         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
218         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
219         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
220         BIO_printf(bio_err," -quiet        - No server output\n");
221         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
222         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
223         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
224         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
225         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
226         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
227         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
228         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
229         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
230         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
231         }
232
233 static int local_argc=0;
234 static char **local_argv;
235 static int hack=0;
236
237 int MAIN(int argc, char *argv[])
238         {
239         short port=PORT;
240         char *CApath=NULL,*CAfile=NULL;
241         char *context = NULL;
242         int badop=0,bugs=0;
243         int ret=1;
244         int off=0;
245         int no_tmp_rsa=0,nocert=0;
246         int state=0;
247         SSL_METHOD *meth=NULL;
248 #ifndef NO_DH
249         DH *dh=NULL;
250 #endif
251
252 #if !defined(NO_SSL2) && !defined(NO_SSL3)
253         meth=SSLv23_server_method();
254 #elif !defined(NO_SSL3)
255         meth=SSLv3_server_method();
256 #elif !defined(NO_SSL2)
257         meth=SSLv2_server_method();
258 #endif
259
260         local_argc=argc;
261         local_argv=argv;
262
263         apps_startup();
264         s_quiet=0;
265         s_debug=0;
266
267         if (bio_err == NULL)
268                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
269
270         verify_depth=0;
271 #ifdef FIONBIO
272         s_nbio=0;
273 #endif
274         s_nbio_test=0;
275
276         argc--;
277         argv++;
278
279         while (argc >= 1)
280                 {
281                 if      ((strcmp(*argv,"-port") == 0) ||
282                          (strcmp(*argv,"-accept") == 0))
283                         {
284                         if (--argc < 1) goto bad;
285                         if (!extract_port(*(++argv),&port))
286                                 goto bad;
287                         }
288                 else if (strcmp(*argv,"-verify") == 0)
289                         {
290                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
291                         if (--argc < 1) goto bad;
292                         verify_depth=atoi(*(++argv));
293                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
294                         }
295                 else if (strcmp(*argv,"-Verify") == 0)
296                         {
297                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
298                                 SSL_VERIFY_CLIENT_ONCE;
299                         if (--argc < 1) goto bad;
300                         verify_depth=atoi(*(++argv));
301                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
302                         }
303                 else if (strcmp(*argv,"-context") == 0)
304                         {
305                         if (--argc < 1) goto bad;
306                         context= *(++argv);
307                         }
308                 else if (strcmp(*argv,"-cert") == 0)
309                         {
310                         if (--argc < 1) goto bad;
311                         s_cert_file= *(++argv);
312                         }
313                 else if (strcmp(*argv,"-key") == 0)
314                         {
315                         if (--argc < 1) goto bad;
316                         s_key_file= *(++argv);
317                         }
318                 else if (strcmp(*argv,"-dcert") == 0)
319                         {
320                         if (--argc < 1) goto bad;
321                         s_dcert_file= *(++argv);
322                         }
323                 else if (strcmp(*argv,"-dkey") == 0)
324                         {
325                         if (--argc < 1) goto bad;
326                         s_dkey_file= *(++argv);
327                         }
328                 else if (strcmp(*argv,"-nocert") == 0)
329                         {
330                         nocert=1;
331                         }
332                 else if (strcmp(*argv,"-CApath") == 0)
333                         {
334                         if (--argc < 1) goto bad;
335                         CApath= *(++argv);
336                         }
337                 else if (strcmp(*argv,"-cipher") == 0)
338                         {
339                         if (--argc < 1) goto bad;
340                         cipher= *(++argv);
341                         }
342                 else if (strcmp(*argv,"-CAfile") == 0)
343                         {
344                         if (--argc < 1) goto bad;
345                         CAfile= *(++argv);
346                         }
347 #ifdef FIONBIO  
348                 else if (strcmp(*argv,"-nbio") == 0)
349                         { s_nbio=1; }
350 #endif
351                 else if (strcmp(*argv,"-nbio_test") == 0)
352                         {
353 #ifdef FIONBIO  
354                         s_nbio=1;
355 #endif
356                         s_nbio_test=1;
357                         }
358                 else if (strcmp(*argv,"-debug") == 0)
359                         { s_debug=1; }
360                 else if (strcmp(*argv,"-hack") == 0)
361                         { hack=1; }
362                 else if (strcmp(*argv,"-state") == 0)
363                         { state=1; }
364                 else if (strcmp(*argv,"-quiet") == 0)
365                         { s_quiet=1; }
366                 else if (strcmp(*argv,"-bugs") == 0)
367                         { bugs=1; }
368                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
369                         { no_tmp_rsa=1; }
370                 else if (strcmp(*argv,"-www") == 0)
371                         { www=1; }
372                 else if (strcmp(*argv,"-WWW") == 0)
373                         { www=2; }
374                 else if (strcmp(*argv,"-no_ssl2") == 0)
375                         { off|=SSL_OP_NO_SSLv2; }
376                 else if (strcmp(*argv,"-no_ssl3") == 0)
377                         { off|=SSL_OP_NO_SSLv3; }
378                 else if (strcmp(*argv,"-no_tls1") == 0)
379                         { off|=SSL_OP_NO_TLSv1; }
380 #ifndef NO_SSL2
381                 else if (strcmp(*argv,"-ssl2") == 0)
382                         { meth=SSLv2_server_method(); }
383 #endif
384 #ifndef NO_SSL3
385                 else if (strcmp(*argv,"-ssl3") == 0)
386                         { meth=SSLv3_server_method(); }
387 #endif
388 #ifndef NO_TLS1
389                 else if (strcmp(*argv,"-tls1") == 0)
390                         { meth=TLSv1_server_method(); }
391 #endif
392                 else
393                         {
394                         BIO_printf(bio_err,"unknown option %s\n",*argv);
395                         badop=1;
396                         break;
397                         }
398                 argc--;
399                 argv++;
400                 }
401         if (badop)
402                 {
403 bad:
404                 sv_usage();
405                 goto end;
406                 }
407
408         if (bio_s_out == NULL)
409                 {
410                 if (s_quiet && !s_debug)
411                         {
412                         bio_s_out=BIO_new(BIO_s_null());
413                         }
414                 else
415                         {
416                         if (bio_s_out == NULL)
417                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
418                         }
419                 }
420
421 #if !defined(NO_RSA) || !defined(NO_DSA)
422         if (nocert)
423 #endif
424                 {
425                 s_cert_file=NULL;
426                 s_key_file=NULL;
427                 s_dcert_file=NULL;
428                 s_dkey_file=NULL;
429                 }
430
431         SSL_load_error_strings();
432         SSLeay_add_ssl_algorithms();
433
434         ctx=SSL_CTX_new(meth);
435         if (ctx == NULL)
436                 {
437                 ERR_print_errors(bio_err);
438                 goto end;
439                 }
440
441         SSL_CTX_set_quiet_shutdown(ctx,1);
442         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
443         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
444         SSL_CTX_set_options(ctx,off);
445         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
446
447         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
448
449         SSL_CTX_sess_set_cache_size(ctx,128);
450
451 #if 0
452         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
453 #endif
454
455 #if 0
456         if (s_cert_file == NULL)
457                 {
458                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
459                 goto end;
460                 }
461 #endif
462
463         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
464                 (!SSL_CTX_set_default_verify_paths(ctx)))
465                 {
466                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
467                 ERR_print_errors(bio_err);
468                 /* goto end; */
469                 }
470
471 #ifndef NO_DH
472         /* EAY EAY EAY evil hack */
473         dh=load_dh_param();
474         if (dh != NULL)
475                 {
476                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
477                 }
478         else
479                 {
480                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
481                 dh=get_dh512();
482                 }
483         BIO_flush(bio_s_out);
484
485         SSL_CTX_set_tmp_dh(ctx,dh);
486         DH_free(dh);
487 #endif
488         
489         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
490                 goto end;
491         if (s_dcert_file != NULL)
492                 {
493                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
494                         goto end;
495                 }
496
497 #ifndef NO_RSA
498 #if 1
499         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
500 #else
501         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
502                 {
503                 RSA *rsa;
504
505                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
506                 BIO_flush(bio_s_out);
507
508                 rsa=RSA_generate_key(512,RSA_F4,NULL);
509
510                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
511                         {
512                         ERR_print_errors(bio_err);
513                         goto end;
514                         }
515                 RSA_free(rsa);
516                 BIO_printf(bio_s_out,"\n");
517                 }
518 #endif
519 #endif
520
521         if (cipher != NULL)
522                 SSL_CTX_set_cipher_list(ctx,cipher);
523         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
524
525         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
526
527         BIO_printf(bio_s_out,"ACCEPT\n");
528         if (www)
529                 do_server(port,&accept_socket,www_body, context);
530         else
531                 do_server(port,&accept_socket,sv_body, context);
532         print_stats(bio_s_out,ctx);
533         ret=0;
534 end:
535         if (ctx != NULL) SSL_CTX_free(ctx);
536         if (bio_s_out != NULL)
537                 {
538                 BIO_free(bio_s_out);
539                 bio_s_out=NULL;
540                 }
541         EXIT(ret);
542         }
543
544 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
545         {
546         BIO_printf(bio,"%4ld items in the session cache\n",
547                 SSL_CTX_sess_number(ssl_ctx));
548         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
549                 SSL_CTX_sess_connect(ssl_ctx));
550         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
551                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
552         BIO_printf(bio,"%4d client connects that finished\n",
553                 SSL_CTX_sess_connect_good(ssl_ctx));
554         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
555                 SSL_CTX_sess_accept(ssl_ctx));
556         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
557                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
558         BIO_printf(bio,"%4d server accepts that finished\n",
559                 SSL_CTX_sess_accept_good(ssl_ctx));
560         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
561         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
562         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
563         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
564         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
565                 SSL_CTX_sess_cache_full(ssl_ctx),
566                 SSL_CTX_sess_get_cache_size(ssl_ctx));
567         }
568
569 static int sv_body(char *hostname, int s, unsigned char *context)
570         {
571         char *buf=NULL;
572         fd_set readfds;
573         int ret=1,width;
574         int k,i;
575         unsigned long l;
576         SSL *con=NULL;
577         BIO *sbio;
578
579         if ((buf=Malloc(bufsize)) == NULL)
580                 {
581                 BIO_printf(bio_err,"out of memory\n");
582                 goto err;
583                 }
584 #ifdef FIONBIO  
585         if (s_nbio)
586                 {
587                 unsigned long sl=1;
588
589                 if (!s_quiet)
590                         BIO_printf(bio_err,"turning on non blocking io\n");
591                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
592                         ERR_print_errors(bio_err);
593                 }
594 #endif
595
596         if (con == NULL) {
597                 con=(SSL *)SSL_new(ctx);
598                 if(context)
599                       SSL_set_session_id_context(con, context,
600                                                  strlen((char *)context));
601         }
602         SSL_clear(con);
603
604         sbio=BIO_new_socket(s,BIO_NOCLOSE);
605         if (s_nbio_test)
606                 {
607                 BIO *test;
608
609                 test=BIO_new(BIO_f_nbio_test());
610                 sbio=BIO_push(test,sbio);
611                 }
612         SSL_set_bio(con,sbio,sbio);
613         SSL_set_accept_state(con);
614         /* SSL_set_fd(con,s); */
615
616         if (s_debug)
617                 {
618                 con->debug=1;
619                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
620                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
621                 }
622
623         width=s+1;
624         for (;;)
625                 {
626                 FD_ZERO(&readfds);
627 #ifndef WINDOWS
628                 FD_SET(fileno(stdin),&readfds);
629 #endif
630                 FD_SET(s,&readfds);
631                 /* Note: under VMS with SOCKETSHR the third parameter is
632                  * currently of type (int *) whereas under other systems
633                  * it is (void *) if you don't have a cast it will choke
634                  * the compiler: if you do have a cast then you can either
635                  * go for (int *) or (void *).
636                  */
637                 i=select(width,(void *)&readfds,NULL,NULL,NULL);
638                 if (i <= 0) continue;
639                 if (FD_ISSET(fileno(stdin),&readfds))
640                         {
641                         i=read(fileno(stdin),buf,bufsize);
642                         if (!s_quiet)
643                                 {
644                                 if ((i <= 0) || (buf[0] == 'Q'))
645                                         {
646                                         BIO_printf(bio_s_out,"DONE\n");
647                                         SHUTDOWN(s);
648                                         close_accept_socket();
649                                         ret= -11;
650                                         goto err;
651                                         }
652                                 if ((i <= 0) || (buf[0] == 'q'))
653                                         {
654                                         BIO_printf(bio_s_out,"DONE\n");
655                                         SHUTDOWN(s);
656         /*                              close_accept_socket();
657                                         ret= -11;*/
658                                         goto err;
659                                         }
660                                 if ((buf[0] == 'r') && 
661                                         ((buf[1] == '\n') || (buf[1] == '\r')))
662                                         {
663                                         SSL_renegotiate(con);
664                                         i=SSL_do_handshake(con);
665                                         printf("SSL_do_handshake -> %d\n",i);
666                                         i=0; /*13; */
667                                         continue;
668                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
669                                         }
670                                 if ((buf[0] == 'R') &&
671                                         ((buf[1] == '\n') || (buf[1] == '\r')))
672                                         {
673                                         SSL_set_verify(con,
674                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
675                                         SSL_renegotiate(con);
676                                         i=SSL_do_handshake(con);
677                                         printf("SSL_do_handshake -> %d\n",i);
678                                         i=0; /* 13; */
679                                         continue;
680                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
681                                         }
682                                 if (buf[0] == 'P')
683                                         {
684                                         static char *str="Lets print some clear text\n";
685                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
686                                         }
687                                 if (buf[0] == 'S')
688                                         {
689                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
690                                         }
691                                 }
692                         l=k=0;
693                         for (;;)
694                                 {
695                                 /* should do a select for the write */
696 #ifdef RENEG
697 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
698 #endif
699                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
700                                 switch (SSL_get_error(con,k))
701                                         {
702                                 case SSL_ERROR_NONE:
703                                         break;
704                                 case SSL_ERROR_WANT_WRITE:
705                                 case SSL_ERROR_WANT_READ:
706                                 case SSL_ERROR_WANT_X509_LOOKUP:
707                                         BIO_printf(bio_s_out,"Write BLOCK\n");
708                                         break;
709                                 case SSL_ERROR_SYSCALL:
710                                 case SSL_ERROR_SSL:
711                                         BIO_printf(bio_s_out,"ERROR\n");
712                                         ERR_print_errors(bio_err);
713                                         ret=1;
714                                         goto err;
715                                         /* break; */
716                                 case SSL_ERROR_ZERO_RETURN:
717                                         BIO_printf(bio_s_out,"DONE\n");
718                                         ret=1;
719                                         goto err;
720                                         }
721                                 l+=k;
722                                 i-=k;
723                                 if (i <= 0) break;
724                                 }
725                         }
726                 if (FD_ISSET(s,&readfds))
727                         {
728                         if (!SSL_is_init_finished(con))
729                                 {
730                                 i=init_ssl_connection(con);
731                                 
732                                 if (i < 0)
733                                         {
734                                         ret=0;
735                                         goto err;
736                                         }
737                                 else if (i == 0)
738                                         {
739                                         ret=1;
740                                         goto err;
741                                         }
742                                 }
743                         else
744                                 {
745 again:  
746                                 i=SSL_read(con,(char *)buf,bufsize);
747                                 switch (SSL_get_error(con,i))
748                                         {
749                                 case SSL_ERROR_NONE:
750                                         write(fileno(stdout),buf,
751                                                 (unsigned int)i);
752                                         if (SSL_pending(con)) goto again;
753                                         break;
754                                 case SSL_ERROR_WANT_WRITE:
755                                 case SSL_ERROR_WANT_READ:
756                                 case SSL_ERROR_WANT_X509_LOOKUP:
757                                         BIO_printf(bio_s_out,"Read BLOCK\n");
758                                         break;
759                                 case SSL_ERROR_SYSCALL:
760                                 case SSL_ERROR_SSL:
761                                         BIO_printf(bio_s_out,"ERROR\n");
762                                         ERR_print_errors(bio_err);
763                                         ret=1;
764                                         goto err;
765                                 case SSL_ERROR_ZERO_RETURN:
766                                         BIO_printf(bio_s_out,"DONE\n");
767                                         ret=1;
768                                         goto err;
769                                         }
770                                 }
771                         }
772                 }
773 err:
774         BIO_printf(bio_s_out,"shutting down SSL\n");
775 #if 1
776         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
777 #else
778         SSL_shutdown(con);
779 #endif
780         if (con != NULL) SSL_free(con);
781         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
782         if (buf != NULL)
783                 {
784                 memset(buf,0,bufsize);
785                 Free(buf);
786                 }
787         if (ret >= 0)
788                 BIO_printf(bio_s_out,"ACCEPT\n");
789         return(ret);
790         }
791
792 static void close_accept_socket(void)
793         {
794         BIO_printf(bio_err,"shutdown accept socket\n");
795         if (accept_socket >= 0)
796                 {
797                 SHUTDOWN2(accept_socket);
798                 }
799         }
800
801 static int init_ssl_connection(SSL *con)
802         {
803         int i;
804         const char *str;
805         X509 *peer;
806         long verify_error;
807         MS_STATIC char buf[BUFSIZ];
808
809         if ((i=SSL_accept(con)) <= 0)
810                 {
811                 if (BIO_sock_should_retry(i))
812                         {
813                         BIO_printf(bio_s_out,"DELAY\n");
814                         return(1);
815                         }
816
817                 BIO_printf(bio_err,"ERROR\n");
818                 verify_error=SSL_get_verify_result(con);
819                 if (verify_error != X509_V_OK)
820                         {
821                         BIO_printf(bio_err,"verify error:%s\n",
822                                 X509_verify_cert_error_string(verify_error));
823                         }
824                 else
825                         ERR_print_errors(bio_err);
826                 return(0);
827                 }
828
829         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
830
831         peer=SSL_get_peer_certificate(con);
832         if (peer != NULL)
833                 {
834                 BIO_printf(bio_s_out,"Client certificate\n");
835                 PEM_write_bio_X509(bio_s_out,peer);
836                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
837                 BIO_printf(bio_s_out,"subject=%s\n",buf);
838                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
839                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
840                 X509_free(peer);
841                 }
842
843         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
844                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
845         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
846         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
847         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
848         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
849                 TLS1_FLAGS_TLS_PADDING_BUG)
850                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
851
852         return(1);
853         }
854
855 #ifndef NO_DH
856 static DH *load_dh_param(void)
857         {
858         DH *ret=NULL;
859         BIO *bio;
860
861         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
862                 goto err;
863         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
864 err:
865         if (bio != NULL) BIO_free(bio);
866         return(ret);
867         }
868 #endif
869
870 #if 0
871 static int load_CA(SSL_CTX *ctx, char *file)
872         {
873         FILE *in;
874         X509 *x=NULL;
875
876         if ((in=fopen(file,"r")) == NULL)
877                 return(0);
878
879         for (;;)
880                 {
881                 if (PEM_read_X509(in,&x,NULL) == NULL)
882                         break;
883                 SSL_CTX_add_client_CA(ctx,x);
884                 }
885         if (x != NULL) X509_free(x);
886         fclose(in);
887         return(1);
888         }
889 #endif
890
891 static int www_body(char *hostname, int s, unsigned char *context)
892         {
893         char *buf=NULL;
894         int ret=1;
895         int i,j,k,blank,dot;
896         struct stat st_buf;
897         SSL *con;
898         SSL_CIPHER *c;
899         BIO *io,*ssl_bio,*sbio;
900         long total_bytes;
901
902         buf=Malloc(bufsize);
903         if (buf == NULL) return(0);
904         io=BIO_new(BIO_f_buffer());
905         ssl_bio=BIO_new(BIO_f_ssl());
906         if ((io == NULL) || (ssl_bio == NULL)) goto err;
907
908 #ifdef FIONBIO  
909         if (s_nbio)
910                 {
911                 unsigned long sl=1;
912
913                 if (!s_quiet)
914                         BIO_printf(bio_err,"turning on non blocking io\n");
915                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
916                         ERR_print_errors(bio_err);
917                 }
918 #endif
919
920         /* lets make the output buffer a reasonable size */
921         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
922
923         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
924         if(context) SSL_set_session_id_context(con, context,
925                                                strlen((char *)context));
926
927         sbio=BIO_new_socket(s,BIO_NOCLOSE);
928         if (s_nbio_test)
929                 {
930                 BIO *test;
931
932                 test=BIO_new(BIO_f_nbio_test());
933                 sbio=BIO_push(test,sbio);
934                 }
935         SSL_set_bio(con,sbio,sbio);
936         SSL_set_accept_state(con);
937
938         /* SSL_set_fd(con,s); */
939         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
940         BIO_push(io,ssl_bio);
941
942         if (s_debug)
943                 {
944                 con->debug=1;
945                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
946                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
947                 }
948
949         blank=0;
950         for (;;)
951                 {
952                 if (hack)
953                         {
954                         i=SSL_accept(con);
955
956                         switch (SSL_get_error(con,i))
957                                 {
958                         case SSL_ERROR_NONE:
959                                 break;
960                         case SSL_ERROR_WANT_WRITE:
961                         case SSL_ERROR_WANT_READ:
962                         case SSL_ERROR_WANT_X509_LOOKUP:
963                                 continue;
964                         case SSL_ERROR_SYSCALL:
965                         case SSL_ERROR_SSL:
966                         case SSL_ERROR_ZERO_RETURN:
967                                 ret=1;
968                                 goto err;
969                                 /* break; */
970                                 }
971
972                         SSL_renegotiate(con);
973                         SSL_write(con,NULL,0);
974                         }
975
976                 i=BIO_gets(io,buf,bufsize-1);
977                 if (i < 0) /* error */
978                         {
979                         if (!BIO_should_retry(io))
980                                 {
981                                 if (!s_quiet)
982                                         ERR_print_errors(bio_err);
983                                 goto err;
984                                 }
985                         else
986                                 {
987                                 BIO_printf(bio_s_out,"read R BLOCK\n");
988 #ifndef MSDOS
989                                 sleep(1);
990 #endif
991                                 continue;
992                                 }
993                         }
994                 else if (i == 0) /* end of input */
995                         {
996                         ret=1;
997                         goto end;
998                         }
999
1000                 /* else we have data */
1001                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1002                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1003                         {
1004                         char *p;
1005                         X509 *peer;
1006                         STACK_OF(SSL_CIPHER) *sk;
1007                         static char *space="                          ";
1008
1009                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1010                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
1011                         BIO_puts(io,"<pre>\n");
1012 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1013                         BIO_puts(io,"\n");
1014                         for (i=0; i<local_argc; i++)
1015                                 {
1016                                 BIO_puts(io,local_argv[i]);
1017                                 BIO_write(io," ",1);
1018                                 }
1019                         BIO_puts(io,"\n");
1020
1021                         /* The following is evil and should not really
1022                          * be done */
1023                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1024                         sk=SSL_get_ciphers(con);
1025                         j=sk_SSL_CIPHER_num(sk);
1026                         for (i=0; i<j; i++)
1027                                 {
1028                                 c=sk_SSL_CIPHER_value(sk,i);
1029                                 BIO_printf(io,"%-11s:%-25s",
1030                                         SSL_CIPHER_get_version(c),
1031                                         SSL_CIPHER_get_name(c));
1032                                 if ((((i+1)%2) == 0) && (i+1 != j))
1033                                         BIO_puts(io,"\n");
1034                                 }
1035                         BIO_puts(io,"\n");
1036                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1037                         if (p != NULL)
1038                                 {
1039                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1040                                 j=i=0;
1041                                 while (*p)
1042                                         {
1043                                         if (*p == ':')
1044                                                 {
1045                                                 BIO_write(io,space,26-j);
1046                                                 i++;
1047                                                 j=0;
1048                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1049                                                 }
1050                                         else
1051                                                 {
1052                                                 BIO_write(io,p,1);
1053                                                 j++;
1054                                                 }
1055                                         p++;
1056                                         }
1057                                 BIO_puts(io,"\n");
1058                                 }
1059                         BIO_printf(io,((con->hit)
1060                                 ?"---\nReused, "
1061                                 :"---\nNew, "));
1062                         c=SSL_get_current_cipher(con);
1063                         BIO_printf(io,"%s, Cipher is %s\n",
1064                                 SSL_CIPHER_get_version(c),
1065                                 SSL_CIPHER_get_name(c));
1066                         SSL_SESSION_print(io,SSL_get_session(con));
1067                         BIO_printf(io,"---\n");
1068                         print_stats(io,SSL_get_SSL_CTX(con));
1069                         BIO_printf(io,"---\n");
1070                         peer=SSL_get_peer_certificate(con);
1071                         if (peer != NULL)
1072                                 {
1073                                 BIO_printf(io,"Client certificate\n");
1074                                 X509_print(io,peer);
1075                                 PEM_write_bio_X509(io,peer);
1076                                 }
1077                         else
1078                                 BIO_puts(io,"no client certificate available\n");
1079                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1080                         break;
1081                         }
1082                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1083                         {
1084                         BIO *file;
1085                         char *p,*e;
1086                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1087
1088                         /* skip the '/' */
1089                         p= &(buf[5]);
1090                         dot=0;
1091                         for (e=p; *e != '\0'; e++)
1092                                 {
1093                                 if (e[0] == ' ') break;
1094                                 if (    (e[0] == '.') &&
1095                                         (strncmp(&(e[-1]),"/../",4) == 0))
1096                                         dot=1;
1097                                 }
1098                         
1099
1100                         if (*e == '\0')
1101                                 {
1102                                 BIO_puts(io,text);
1103                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1104                                 break;
1105                                 }
1106                         *e='\0';
1107
1108                         if (dot)
1109                                 {
1110                                 BIO_puts(io,text);
1111                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1112                                 break;
1113                                 }
1114
1115                         if (*p == '/')
1116                                 {
1117                                 BIO_puts(io,text);
1118                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1119                                 break;
1120                                 }
1121
1122                         /* append if a directory lookup */
1123                         if (e[-1] == '/')
1124                                 strcat(p,"index.html");
1125
1126                         /* if a directory, do the index thang */
1127                         if (stat(p,&st_buf) < 0)
1128                                 {
1129                                 BIO_puts(io,text);
1130                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1131                                 ERR_print_errors(io);
1132                                 break;
1133                                 }
1134                         if (S_ISDIR(st_buf.st_mode))
1135                                 {
1136                                 strcat(p,"/index.html");
1137                                 }
1138
1139                         if ((file=BIO_new_file(p,"r")) == NULL)
1140                                 {
1141                                 BIO_puts(io,text);
1142                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1143                                 ERR_print_errors(io);
1144                                 break;
1145                                 }
1146
1147                         if (!s_quiet)
1148                                 BIO_printf(bio_err,"FILE:%s\n",p);
1149
1150                         i=strlen(p);
1151                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1152                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1153                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1154                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1155                         else
1156                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1157                         /* send the file */
1158                         total_bytes=0;
1159                         for (;;)
1160                                 {
1161                                 i=BIO_read(file,buf,bufsize);
1162                                 if (i <= 0) break;
1163
1164 #ifdef RENEG
1165                                 total_bytes+=i;
1166                                 fprintf(stderr,"%d\n",i);
1167                                 if (total_bytes > 3*1024)
1168                                         {
1169                                         total_bytes=0;
1170                                         fprintf(stderr,"RENEGOTIATE\n");
1171                                         SSL_renegotiate(con);
1172                                         }
1173 #endif
1174
1175                                 for (j=0; j<i; )
1176                                         {
1177 #ifdef RENEG
1178 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1179 #endif
1180                                         k=BIO_write(io,&(buf[j]),i-j);
1181                                         if (k <= 0)
1182                                                 {
1183                                                 if (!BIO_should_retry(io))
1184                                                         goto write_error;
1185                                                 else
1186                                                         {
1187                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1188                                                         }
1189                                                 }
1190                                         else
1191                                                 {
1192                                                 j+=k;
1193                                                 }
1194                                         }
1195                                 }
1196 write_error:
1197                         BIO_free(file);
1198                         break;
1199                         }
1200                 }
1201
1202         for (;;)
1203                 {
1204                 i=(int)BIO_flush(io);
1205                 if (i <= 0)
1206                         {
1207                         if (!BIO_should_retry(io))
1208                                 break;
1209                         }
1210                 else
1211                         break;
1212                 }
1213 end:
1214 #if 1
1215         /* make sure we re-use sessions */
1216         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1217 #else
1218         /* This kills performace */
1219 /*      SSL_shutdown(con); A shutdown gets sent in the
1220  *      BIO_free_all(io) procession */
1221 #endif
1222
1223 err:
1224
1225         if (ret >= 0)
1226                 BIO_printf(bio_s_out,"ACCEPT\n");
1227
1228         if (buf != NULL) Free(buf);
1229         if (io != NULL) BIO_free_all(io);
1230 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1231         return(ret);
1232         }
1233
1234 #ifndef NO_RSA
1235 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export, int keylength)
1236         {
1237         static RSA *rsa_tmp=NULL;
1238
1239         if (rsa_tmp == NULL)
1240                 {
1241                 if (!s_quiet)
1242                         {
1243                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1244                         BIO_flush(bio_err);
1245                         }
1246                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1247                 if (!s_quiet)
1248                         {
1249                         BIO_printf(bio_err,"\n");
1250                         BIO_flush(bio_err);
1251                         }
1252                 }
1253         return(rsa_tmp);
1254         }
1255 #endif