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