Allow various X509_STORE_CTX properties to be
[openssl.git] / apps / s_server.c
1 /* apps/s_server.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  * 
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  * 
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from 
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  * 
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  * 
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58
59 #include <assert.h>
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include <sys/types.h>
64 #include <sys/stat.h>
65 #include <openssl/e_os2.h>
66 #ifdef OPENSSL_NO_STDIO
67 #define APPS_WIN16
68 #endif
69
70 /* With IPv6, it looks like Digital has mixed up the proper order of
71    recursive header file inclusion, resulting in the compiler complaining
72    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
73    is needed to have fileno() declared correctly...  So let's define u_int */
74 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
75 #define __U_INT
76 typedef unsigned int u_int;
77 #endif
78
79 #include <openssl/lhash.h>
80 #include <openssl/bn.h>
81 #define USE_SOCKETS
82 #include "apps.h"
83 #include <openssl/err.h>
84 #include <openssl/pem.h>
85 #include <openssl/x509.h>
86 #include <openssl/ssl.h>
87 #include <openssl/engine.h>
88 #include "s_apps.h"
89
90 #ifdef OPENSSL_SYS_WINDOWS
91 #include <conio.h>
92 #endif
93
94 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
95 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
96 #undef FIONBIO
97 #endif
98
99 #ifndef OPENSSL_NO_RSA
100 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
101 #endif
102 static int sv_body(char *hostname, int s, unsigned char *context);
103 static int www_body(char *hostname, int s, unsigned char *context);
104 static void close_accept_socket(void );
105 static void sv_usage(void);
106 static int init_ssl_connection(SSL *s);
107 static void print_stats(BIO *bp,SSL_CTX *ctx);
108 static int generate_session_id(const SSL *ssl, unsigned char *id,
109                                 unsigned int *id_len);
110 #ifndef OPENSSL_NO_DH
111 static DH *load_dh_param(char *dhfile);
112 static DH *get_dh512(void);
113 #endif
114 #ifdef MONOLITH
115 static void s_server_init(void);
116 #endif
117
118 #ifndef S_ISDIR
119 # if defined(_S_IFMT) && defined(_S_IFDIR)
120 #  define S_ISDIR(a)    (((a) & _S_IFMT) == _S_IFDIR)
121 # else
122 #  define S_ISDIR(a)    (((a) & S_IFMT) == S_IFDIR)
123 # endif
124 #endif
125
126 #ifndef OPENSSL_NO_DH
127 static unsigned char dh512_p[]={
128         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
129         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
130         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
131         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
132         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
133         0x47,0x74,0xE8,0x33,
134         };
135 static unsigned char dh512_g[]={
136         0x02,
137         };
138
139 static DH *get_dh512(void)
140         {
141         DH *dh=NULL;
142
143         if ((dh=DH_new()) == NULL) return(NULL);
144         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
145         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
146         if ((dh->p == NULL) || (dh->g == NULL))
147                 return(NULL);
148         return(dh);
149         }
150 #endif
151
152 /* static int load_CA(SSL_CTX *ctx, char *file);*/
153
154 #undef BUFSIZZ
155 #define BUFSIZZ 16*1024
156 static int bufsize=BUFSIZZ;
157 static int accept_socket= -1;
158
159 #define TEST_CERT       "server.pem"
160 #undef PROG
161 #define PROG            s_server_main
162
163 extern int verify_depth;
164
165 static char *cipher=NULL;
166 static int s_server_verify=SSL_VERIFY_NONE;
167 static int s_server_session_id_context = 1; /* anything will do */
168 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
169 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
170 #ifdef FIONBIO
171 static int s_nbio=0;
172 #endif
173 static int s_nbio_test=0;
174 int s_crlf=0;
175 static SSL_CTX *ctx=NULL;
176 static int www=0;
177
178 static BIO *bio_s_out=NULL;
179 static int s_debug=0;
180 static int s_quiet=0;
181
182 static int hack=0;
183 static char *engine_id=NULL;
184 static const char *session_id_prefix=NULL;
185
186 #ifdef MONOLITH
187 static void s_server_init(void)
188         {
189         accept_socket=-1;
190         cipher=NULL;
191         s_server_verify=SSL_VERIFY_NONE;
192         s_dcert_file=NULL;
193         s_dkey_file=NULL;
194         s_cert_file=TEST_CERT;
195         s_key_file=NULL;
196 #ifdef FIONBIO
197         s_nbio=0;
198 #endif
199         s_nbio_test=0;
200         ctx=NULL;
201         www=0;
202
203         bio_s_out=NULL;
204         s_debug=0;
205         s_quiet=0;
206         hack=0;
207         engine_id=NULL;
208         }
209 #endif
210
211 static void sv_usage(void)
212         {
213         BIO_printf(bio_err,"usage: s_server [args ...]\n");
214         BIO_printf(bio_err,"\n");
215         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
216         BIO_printf(bio_err," -context arg  - set session ID context\n");
217         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
218         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
219         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
220         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
221         BIO_printf(bio_err," -key arg      - Private Key file to use, PEM format assumed, in cert file if\n");
222         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
223         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
224         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
225         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
226         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
227 #ifdef FIONBIO
228         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
229 #endif
230         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
231         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
232         BIO_printf(bio_err," -debug        - Print more output\n");
233         BIO_printf(bio_err," -state        - Print the SSL states\n");
234         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
235         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
236         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
237         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
238         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
239         BIO_printf(bio_err," -quiet        - No server output\n");
240         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
241         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
242         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
243         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
244         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
245         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
246         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
247 #ifndef OPENSSL_NO_DH
248         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
249 #endif
250         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
251         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
252         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
253         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
254         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
255         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
256         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
257         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
258         }
259
260 static int local_argc=0;
261 static char **local_argv;
262
263 #ifdef CHARSET_EBCDIC
264 static int ebcdic_new(BIO *bi);
265 static int ebcdic_free(BIO *a);
266 static int ebcdic_read(BIO *b, char *out, int outl);
267 static int ebcdic_write(BIO *b, char *in, int inl);
268 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr);
269 static int ebcdic_gets(BIO *bp, char *buf, int size);
270 static int ebcdic_puts(BIO *bp, char *str);
271
272 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
273 static BIO_METHOD methods_ebcdic=
274         {
275         BIO_TYPE_EBCDIC_FILTER,
276         "EBCDIC/ASCII filter",
277         ebcdic_write,
278         ebcdic_read,
279         ebcdic_puts,
280         ebcdic_gets,
281         ebcdic_ctrl,
282         ebcdic_new,
283         ebcdic_free,
284         };
285
286 typedef struct
287 {
288         size_t  alloced;
289         char    buff[1];
290 } EBCDIC_OUTBUFF;
291
292 BIO_METHOD *BIO_f_ebcdic_filter()
293 {
294         return(&methods_ebcdic);
295 }
296
297 static int ebcdic_new(BIO *bi)
298 {
299         EBCDIC_OUTBUFF *wbuf;
300
301         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
302         wbuf->alloced = 1024;
303         wbuf->buff[0] = '\0';
304
305         bi->ptr=(char *)wbuf;
306         bi->init=1;
307         bi->flags=0;
308         return(1);
309 }
310
311 static int ebcdic_free(BIO *a)
312 {
313         if (a == NULL) return(0);
314         if (a->ptr != NULL)
315                 OPENSSL_free(a->ptr);
316         a->ptr=NULL;
317         a->init=0;
318         a->flags=0;
319         return(1);
320 }
321         
322 static int ebcdic_read(BIO *b, char *out, int outl)
323 {
324         int ret=0;
325
326         if (out == NULL || outl == 0) return(0);
327         if (b->next_bio == NULL) return(0);
328
329         ret=BIO_read(b->next_bio,out,outl);
330         if (ret > 0)
331                 ascii2ebcdic(out,out,ret);
332         return(ret);
333 }
334
335 static int ebcdic_write(BIO *b, char *in, int inl)
336 {
337         EBCDIC_OUTBUFF *wbuf;
338         int ret=0;
339         int num;
340         unsigned char n;
341
342         if ((in == NULL) || (inl <= 0)) return(0);
343         if (b->next_bio == NULL) return(0);
344
345         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
346
347         if (inl > (num = wbuf->alloced))
348         {
349                 num = num + num;  /* double the size */
350                 if (num < inl)
351                         num = inl;
352                 OPENSSL_free(wbuf);
353                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
354
355                 wbuf->alloced = num;
356                 wbuf->buff[0] = '\0';
357
358                 b->ptr=(char *)wbuf;
359         }
360
361         ebcdic2ascii(wbuf->buff, in, inl);
362
363         ret=BIO_write(b->next_bio, wbuf->buff, inl);
364
365         return(ret);
366 }
367
368 static long ebcdic_ctrl(BIO *b, int cmd, long num, char *ptr)
369 {
370         long ret;
371
372         if (b->next_bio == NULL) return(0);
373         switch (cmd)
374         {
375         case BIO_CTRL_DUP:
376                 ret=0L;
377                 break;
378         default:
379                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
380                 break;
381         }
382         return(ret);
383 }
384
385 static int ebcdic_gets(BIO *bp, char *buf, int size)
386 {
387         int i, ret;
388         if (bp->next_bio == NULL) return(0);
389 /*      return(BIO_gets(bp->next_bio,buf,size));*/
390         for (i=0; i<size-1; ++i)
391         {
392                 ret = ebcdic_read(bp,&buf[i],1);
393                 if (ret <= 0)
394                         break;
395                 else if (buf[i] == '\n')
396                 {
397                         ++i;
398                         break;
399                 }
400         }
401         if (i < size)
402                 buf[i] = '\0';
403         return (ret < 0 && i == 0) ? ret : i;
404 }
405
406 static int ebcdic_puts(BIO *bp, char *str)
407 {
408         if (bp->next_bio == NULL) return(0);
409         return ebcdic_write(bp, str, strlen(str));
410 }
411 #endif
412
413 int MAIN(int, char **);
414
415 int MAIN(int argc, char *argv[])
416         {
417         X509_STORE *store = NULL;
418         int vflags = 0;
419         short port=PORT;
420         char *CApath=NULL,*CAfile=NULL;
421         char *context = NULL;
422         char *dhfile = NULL;
423         int badop=0,bugs=0;
424         int ret=1;
425         int off=0;
426         int no_tmp_rsa=0,no_dhe=0,nocert=0;
427         int state=0;
428         SSL_METHOD *meth=NULL;
429         ENGINE *e=NULL;
430         char *inrand=NULL;
431
432 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
433         meth=SSLv23_server_method();
434 #elif !defined(OPENSSL_NO_SSL3)
435         meth=SSLv3_server_method();
436 #elif !defined(OPENSSL_NO_SSL2)
437         meth=SSLv2_server_method();
438 #endif
439
440         local_argc=argc;
441         local_argv=argv;
442
443         apps_startup();
444 #ifdef MONOLITH
445         s_server_init();
446 #endif
447
448         if (bio_err == NULL)
449                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
450
451         verify_depth=0;
452 #ifdef FIONBIO
453         s_nbio=0;
454 #endif
455         s_nbio_test=0;
456
457         argc--;
458         argv++;
459
460         while (argc >= 1)
461                 {
462                 if      ((strcmp(*argv,"-port") == 0) ||
463                          (strcmp(*argv,"-accept") == 0))
464                         {
465                         if (--argc < 1) goto bad;
466                         if (!extract_port(*(++argv),&port))
467                                 goto bad;
468                         }
469                 else if (strcmp(*argv,"-verify") == 0)
470                         {
471                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
472                         if (--argc < 1) goto bad;
473                         verify_depth=atoi(*(++argv));
474                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
475                         }
476                 else if (strcmp(*argv,"-Verify") == 0)
477                         {
478                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
479                                 SSL_VERIFY_CLIENT_ONCE;
480                         if (--argc < 1) goto bad;
481                         verify_depth=atoi(*(++argv));
482                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
483                         }
484                 else if (strcmp(*argv,"-context") == 0)
485                         {
486                         if (--argc < 1) goto bad;
487                         context= *(++argv);
488                         }
489                 else if (strcmp(*argv,"-cert") == 0)
490                         {
491                         if (--argc < 1) goto bad;
492                         s_cert_file= *(++argv);
493                         }
494                 else if (strcmp(*argv,"-key") == 0)
495                         {
496                         if (--argc < 1) goto bad;
497                         s_key_file= *(++argv);
498                         }
499                 else if (strcmp(*argv,"-dhparam") == 0)
500                         {
501                         if (--argc < 1) goto bad;
502                         dhfile = *(++argv);
503                         }
504                 else if (strcmp(*argv,"-dcert") == 0)
505                         {
506                         if (--argc < 1) goto bad;
507                         s_dcert_file= *(++argv);
508                         }
509                 else if (strcmp(*argv,"-dkey") == 0)
510                         {
511                         if (--argc < 1) goto bad;
512                         s_dkey_file= *(++argv);
513                         }
514                 else if (strcmp(*argv,"-nocert") == 0)
515                         {
516                         nocert=1;
517                         }
518                 else if (strcmp(*argv,"-CApath") == 0)
519                         {
520                         if (--argc < 1) goto bad;
521                         CApath= *(++argv);
522                         }
523                 else if (strcmp(*argv,"-crl_check") == 0)
524                         {
525                         vflags |= X509_V_FLAG_CRL_CHECK;
526                         }
527                 else if (strcmp(*argv,"-crl_check") == 0)
528                         {
529                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
530                         }
531                 else if (strcmp(*argv,"-serverpref") == 0)
532                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
533                 else if (strcmp(*argv,"-cipher") == 0)
534                         {
535                         if (--argc < 1) goto bad;
536                         cipher= *(++argv);
537                         }
538                 else if (strcmp(*argv,"-CAfile") == 0)
539                         {
540                         if (--argc < 1) goto bad;
541                         CAfile= *(++argv);
542                         }
543 #ifdef FIONBIO  
544                 else if (strcmp(*argv,"-nbio") == 0)
545                         { s_nbio=1; }
546 #endif
547                 else if (strcmp(*argv,"-nbio_test") == 0)
548                         {
549 #ifdef FIONBIO  
550                         s_nbio=1;
551 #endif
552                         s_nbio_test=1;
553                         }
554                 else if (strcmp(*argv,"-debug") == 0)
555                         { s_debug=1; }
556                 else if (strcmp(*argv,"-hack") == 0)
557                         { hack=1; }
558                 else if (strcmp(*argv,"-state") == 0)
559                         { state=1; }
560                 else if (strcmp(*argv,"-crlf") == 0)
561                         { s_crlf=1; }
562                 else if (strcmp(*argv,"-quiet") == 0)
563                         { s_quiet=1; }
564                 else if (strcmp(*argv,"-bugs") == 0)
565                         { bugs=1; }
566                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
567                         { no_tmp_rsa=1; }
568                 else if (strcmp(*argv,"-no_dhe") == 0)
569                         { no_dhe=1; }
570                 else if (strcmp(*argv,"-www") == 0)
571                         { www=1; }
572                 else if (strcmp(*argv,"-WWW") == 0)
573                         { www=2; }
574                 else if (strcmp(*argv,"-HTTP") == 0)
575                         { www=3; }
576                 else if (strcmp(*argv,"-no_ssl2") == 0)
577                         { off|=SSL_OP_NO_SSLv2; }
578                 else if (strcmp(*argv,"-no_ssl3") == 0)
579                         { off|=SSL_OP_NO_SSLv3; }
580                 else if (strcmp(*argv,"-no_tls1") == 0)
581                         { off|=SSL_OP_NO_TLSv1; }
582 #ifndef OPENSSL_NO_SSL2
583                 else if (strcmp(*argv,"-ssl2") == 0)
584                         { meth=SSLv2_server_method(); }
585 #endif
586 #ifndef OPENSSL_NO_SSL3
587                 else if (strcmp(*argv,"-ssl3") == 0)
588                         { meth=SSLv3_server_method(); }
589 #endif
590 #ifndef OPENSSL_NO_TLS1
591                 else if (strcmp(*argv,"-tls1") == 0)
592                         { meth=TLSv1_server_method(); }
593 #endif
594                 else if (strcmp(*argv, "-id_prefix") == 0)
595                         {
596                         if (--argc < 1) goto bad;
597                         session_id_prefix = *(++argv);
598                         }
599                 else if (strcmp(*argv,"-engine") == 0)
600                         {
601                         if (--argc < 1) goto bad;
602                         engine_id= *(++argv);
603                         }
604                 else if (strcmp(*argv,"-rand") == 0)
605                         {
606                         if (--argc < 1) goto bad;
607                         inrand= *(++argv);
608                         }
609                 else
610                         {
611                         BIO_printf(bio_err,"unknown option %s\n",*argv);
612                         badop=1;
613                         break;
614                         }
615                 argc--;
616                 argv++;
617                 }
618         if (badop)
619                 {
620 bad:
621                 sv_usage();
622                 goto end;
623                 }
624
625         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
626                 && !RAND_status())
627                 {
628                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
629                 }
630         if (inrand != NULL)
631                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
632                         app_RAND_load_files(inrand));
633
634         if (bio_s_out == NULL)
635                 {
636                 if (s_quiet && !s_debug)
637                         {
638                         bio_s_out=BIO_new(BIO_s_null());
639                         }
640                 else
641                         {
642                         if (bio_s_out == NULL)
643                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
644                         }
645                 }
646
647 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA)
648         if (nocert)
649 #endif
650                 {
651                 s_cert_file=NULL;
652                 s_key_file=NULL;
653                 s_dcert_file=NULL;
654                 s_dkey_file=NULL;
655                 }
656
657         SSL_load_error_strings();
658         OpenSSL_add_ssl_algorithms();
659
660         if (engine_id != NULL)
661                 {
662                 if((e = ENGINE_by_id(engine_id)) == NULL)
663                         {
664                         BIO_printf(bio_err,"invalid engine\n");
665                         ERR_print_errors(bio_err);
666                         goto end;
667                         }
668                 if (s_debug)
669                         {
670                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
671                                 0, bio_err, 0);
672                         }
673                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
674                         {
675                         BIO_printf(bio_err,"can't use that engine\n");
676                         ERR_print_errors(bio_err);
677                         goto end;
678                         }
679                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine_id);
680                 ENGINE_free(e);
681                 }
682
683         ctx=SSL_CTX_new(meth);
684         if (ctx == NULL)
685                 {
686                 ERR_print_errors(bio_err);
687                 goto end;
688                 }
689         if (session_id_prefix)
690                 {
691                 if(strlen(session_id_prefix) >= 32)
692                         BIO_printf(bio_err,
693 "warning: id_prefix is too long, only one new session will be possible\n");
694                 else if(strlen(session_id_prefix) >= 16)
695                         BIO_printf(bio_err,
696 "warning: id_prefix is too long if you use SSLv2\n");
697                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
698                         {
699                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
700                         ERR_print_errors(bio_err);
701                         goto end;
702                         }
703                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
704                 }
705         SSL_CTX_set_quiet_shutdown(ctx,1);
706         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
707         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
708         SSL_CTX_set_options(ctx,off);
709         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
710
711         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
712
713         SSL_CTX_sess_set_cache_size(ctx,128);
714
715 #if 0
716         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
717 #endif
718
719 #if 0
720         if (s_cert_file == NULL)
721                 {
722                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
723                 goto end;
724                 }
725 #endif
726
727         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
728                 (!SSL_CTX_set_default_verify_paths(ctx)))
729                 {
730                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
731                 ERR_print_errors(bio_err);
732                 /* goto end; */
733                 }
734         store = SSL_CTX_get_cert_store(ctx);
735         X509_STORE_set_flags(store, vflags);
736
737 #ifndef OPENSSL_NO_DH
738         if (!no_dhe)
739                 {
740                 DH *dh=NULL;
741
742                 if (dhfile)
743                         dh = load_dh_param(dhfile);
744                 else if (s_cert_file)
745                         dh = load_dh_param(s_cert_file);
746
747                 if (dh != NULL)
748                         {
749                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
750                         }
751                 else
752                         {
753                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
754                         dh=get_dh512();
755                         }
756                 (void)BIO_flush(bio_s_out);
757
758                 SSL_CTX_set_tmp_dh(ctx,dh);
759                 DH_free(dh);
760                 }
761 #endif
762         
763         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
764                 goto end;
765         if (s_dcert_file != NULL)
766                 {
767                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
768                         goto end;
769                 }
770
771 #ifndef OPENSSL_NO_RSA
772 #if 1
773         if (!no_tmp_rsa)
774                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
775 #else
776         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
777                 {
778                 RSA *rsa;
779
780                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
781                 BIO_flush(bio_s_out);
782
783                 rsa=RSA_generate_key(512,RSA_F4,NULL);
784
785                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
786                         {
787                         ERR_print_errors(bio_err);
788                         goto end;
789                         }
790                 RSA_free(rsa);
791                 BIO_printf(bio_s_out,"\n");
792                 }
793 #endif
794 #endif
795
796         if (cipher != NULL)
797                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
798                 BIO_printf(bio_err,"error setting cipher list\n");
799                 ERR_print_errors(bio_err);
800                 goto end;
801         }
802         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
803         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
804                 sizeof s_server_session_id_context);
805
806         if (CAfile != NULL)
807             SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
808
809         BIO_printf(bio_s_out,"ACCEPT\n");
810         if (www)
811                 do_server(port,&accept_socket,www_body, context);
812         else
813                 do_server(port,&accept_socket,sv_body, context);
814         print_stats(bio_s_out,ctx);
815         ret=0;
816 end:
817         if (ctx != NULL) SSL_CTX_free(ctx);
818         if (bio_s_out != NULL)
819                 {
820                 BIO_free(bio_s_out);
821                 bio_s_out=NULL;
822                 }
823         EXIT(ret);
824         }
825
826 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
827         {
828         BIO_printf(bio,"%4ld items in the session cache\n",
829                 SSL_CTX_sess_number(ssl_ctx));
830         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
831                 SSL_CTX_sess_connect(ssl_ctx));
832         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
833                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
834         BIO_printf(bio,"%4d client connects that finished\n",
835                 SSL_CTX_sess_connect_good(ssl_ctx));
836         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
837                 SSL_CTX_sess_accept(ssl_ctx));
838         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
839                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
840         BIO_printf(bio,"%4d server accepts that finished\n",
841                 SSL_CTX_sess_accept_good(ssl_ctx));
842         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
843         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
844         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
845         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
846         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
847                 SSL_CTX_sess_cache_full(ssl_ctx),
848                 SSL_CTX_sess_get_cache_size(ssl_ctx));
849         }
850
851 static int sv_body(char *hostname, int s, unsigned char *context)
852         {
853         char *buf=NULL;
854         fd_set readfds;
855         int ret=1,width;
856         int k,i;
857         unsigned long l;
858         SSL *con=NULL;
859         BIO *sbio;
860 #ifdef OPENSSL_SYS_WINDOWS
861         struct timeval tv;
862 #endif
863
864         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
865                 {
866                 BIO_printf(bio_err,"out of memory\n");
867                 goto err;
868                 }
869 #ifdef FIONBIO  
870         if (s_nbio)
871                 {
872                 unsigned long sl=1;
873
874                 if (!s_quiet)
875                         BIO_printf(bio_err,"turning on non blocking io\n");
876                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
877                         ERR_print_errors(bio_err);
878                 }
879 #endif
880
881         if (con == NULL) {
882                 con=SSL_new(ctx);
883 #ifndef OPENSSL_NO_KRB5
884                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
885                         {
886                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
887                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
888                         }
889 #endif  /* OPENSSL_NO_KRB5 */
890                 if(context)
891                       SSL_set_session_id_context(con, context,
892                                                  strlen((char *)context));
893         }
894         SSL_clear(con);
895
896         sbio=BIO_new_socket(s,BIO_NOCLOSE);
897         if (s_nbio_test)
898                 {
899                 BIO *test;
900
901                 test=BIO_new(BIO_f_nbio_test());
902                 sbio=BIO_push(test,sbio);
903                 }
904         SSL_set_bio(con,sbio,sbio);
905         SSL_set_accept_state(con);
906         /* SSL_set_fd(con,s); */
907
908         if (s_debug)
909                 {
910                 con->debug=1;
911                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
912                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
913                 }
914
915         width=s+1;
916         for (;;)
917                 {
918                 int read_from_terminal;
919                 int read_from_sslcon;
920
921                 read_from_terminal = 0;
922                 read_from_sslcon = SSL_pending(con);
923
924                 if (!read_from_sslcon)
925                         {
926                         FD_ZERO(&readfds);
927 #ifndef OPENSSL_SYS_WINDOWS
928                         FD_SET(fileno(stdin),&readfds);
929 #endif
930                         FD_SET(s,&readfds);
931                         /* Note: under VMS with SOCKETSHR the second parameter is
932                          * currently of type (int *) whereas under other systems
933                          * it is (void *) if you don't have a cast it will choke
934                          * the compiler: if you do have a cast then you can either
935                          * go for (int *) or (void *).
936                          */
937 #ifdef OPENSSL_SYS_WINDOWS
938                         /* Under Windows we can't select on stdin: only
939                          * on sockets. As a workaround we timeout the select every
940                          * second and check for any keypress. In a proper Windows
941                          * application we wouldn't do this because it is inefficient.
942                          */
943                         tv.tv_sec = 1;
944                         tv.tv_usec = 0;
945                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
946                         if((i < 0) || (!i && !_kbhit() ) )continue;
947                         if(_kbhit())
948                                 read_from_terminal = 1;
949 #else
950                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
951                         if (i <= 0) continue;
952                         if (FD_ISSET(fileno(stdin),&readfds))
953                                 read_from_terminal = 1;
954 #endif
955                         if (FD_ISSET(s,&readfds))
956                                 read_from_sslcon = 1;
957                         }
958                 if (read_from_terminal)
959                         {
960                         if (s_crlf)
961                                 {
962                                 int j, lf_num;
963
964                                 i=read(fileno(stdin), buf, bufsize/2);
965                                 lf_num = 0;
966                                 /* both loops are skipped when i <= 0 */
967                                 for (j = 0; j < i; j++)
968                                         if (buf[j] == '\n')
969                                                 lf_num++;
970                                 for (j = i-1; j >= 0; j--)
971                                         {
972                                         buf[j+lf_num] = buf[j];
973                                         if (buf[j] == '\n')
974                                                 {
975                                                 lf_num--;
976                                                 i++;
977                                                 buf[j+lf_num] = '\r';
978                                                 }
979                                         }
980                                 assert(lf_num == 0);
981                                 }
982                         else
983                                 i=read(fileno(stdin),buf,bufsize);
984                         if (!s_quiet)
985                                 {
986                                 if ((i <= 0) || (buf[0] == 'Q'))
987                                         {
988                                         BIO_printf(bio_s_out,"DONE\n");
989                                         SHUTDOWN(s);
990                                         close_accept_socket();
991                                         ret= -11;
992                                         goto err;
993                                         }
994                                 if ((i <= 0) || (buf[0] == 'q'))
995                                         {
996                                         BIO_printf(bio_s_out,"DONE\n");
997                                         SHUTDOWN(s);
998         /*                              close_accept_socket();
999                                         ret= -11;*/
1000                                         goto err;
1001                                         }
1002                                 if ((buf[0] == 'r') && 
1003                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1004                                         {
1005                                         SSL_renegotiate(con);
1006                                         i=SSL_do_handshake(con);
1007                                         printf("SSL_do_handshake -> %d\n",i);
1008                                         i=0; /*13; */
1009                                         continue;
1010                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
1011                                         }
1012                                 if ((buf[0] == 'R') &&
1013                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1014                                         {
1015                                         SSL_set_verify(con,
1016                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1017                                         SSL_renegotiate(con);
1018                                         i=SSL_do_handshake(con);
1019                                         printf("SSL_do_handshake -> %d\n",i);
1020                                         i=0; /* 13; */
1021                                         continue;
1022                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1023                                         }
1024                                 if (buf[0] == 'P')
1025                                         {
1026                                         static char *str="Lets print some clear text\n";
1027                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
1028                                         }
1029                                 if (buf[0] == 'S')
1030                                         {
1031                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1032                                         }
1033                                 }
1034 #ifdef CHARSET_EBCDIC
1035                         ebcdic2ascii(buf,buf,i);
1036 #endif
1037                         l=k=0;
1038                         for (;;)
1039                                 {
1040                                 /* should do a select for the write */
1041 #ifdef RENEG
1042 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1043 #endif
1044                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
1045                                 switch (SSL_get_error(con,k))
1046                                         {
1047                                 case SSL_ERROR_NONE:
1048                                         break;
1049                                 case SSL_ERROR_WANT_WRITE:
1050                                 case SSL_ERROR_WANT_READ:
1051                                 case SSL_ERROR_WANT_X509_LOOKUP:
1052                                         BIO_printf(bio_s_out,"Write BLOCK\n");
1053                                         break;
1054                                 case SSL_ERROR_SYSCALL:
1055                                 case SSL_ERROR_SSL:
1056                                         BIO_printf(bio_s_out,"ERROR\n");
1057                                         ERR_print_errors(bio_err);
1058                                         ret=1;
1059                                         goto err;
1060                                         /* break; */
1061                                 case SSL_ERROR_ZERO_RETURN:
1062                                         BIO_printf(bio_s_out,"DONE\n");
1063                                         ret=1;
1064                                         goto err;
1065                                         }
1066                                 l+=k;
1067                                 i-=k;
1068                                 if (i <= 0) break;
1069                                 }
1070                         }
1071                 if (read_from_sslcon)
1072                         {
1073                         if (!SSL_is_init_finished(con))
1074                                 {
1075                                 i=init_ssl_connection(con);
1076                                 
1077                                 if (i < 0)
1078                                         {
1079                                         ret=0;
1080                                         goto err;
1081                                         }
1082                                 else if (i == 0)
1083                                         {
1084                                         ret=1;
1085                                         goto err;
1086                                         }
1087                                 }
1088                         else
1089                                 {
1090 again:  
1091                                 i=SSL_read(con,(char *)buf,bufsize);
1092                                 switch (SSL_get_error(con,i))
1093                                         {
1094                                 case SSL_ERROR_NONE:
1095 #ifdef CHARSET_EBCDIC
1096                                         ascii2ebcdic(buf,buf,i);
1097 #endif
1098                                         write(fileno(stdout),buf,
1099                                                 (unsigned int)i);
1100                                         if (SSL_pending(con)) goto again;
1101                                         break;
1102                                 case SSL_ERROR_WANT_WRITE:
1103                                 case SSL_ERROR_WANT_READ:
1104                                 case SSL_ERROR_WANT_X509_LOOKUP:
1105                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1106                                         break;
1107                                 case SSL_ERROR_SYSCALL:
1108                                 case SSL_ERROR_SSL:
1109                                         BIO_printf(bio_s_out,"ERROR\n");
1110                                         ERR_print_errors(bio_err);
1111                                         ret=1;
1112                                         goto err;
1113                                 case SSL_ERROR_ZERO_RETURN:
1114                                         BIO_printf(bio_s_out,"DONE\n");
1115                                         ret=1;
1116                                         goto err;
1117                                         }
1118                                 }
1119                         }
1120                 }
1121 err:
1122         BIO_printf(bio_s_out,"shutting down SSL\n");
1123 #if 1
1124         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1125 #else
1126         SSL_shutdown(con);
1127 #endif
1128         if (con != NULL) SSL_free(con);
1129         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1130         if (buf != NULL)
1131                 {
1132                 memset(buf,0,bufsize);
1133                 OPENSSL_free(buf);
1134                 }
1135         if (ret >= 0)
1136                 BIO_printf(bio_s_out,"ACCEPT\n");
1137         return(ret);
1138         }
1139
1140 static void close_accept_socket(void)
1141         {
1142         BIO_printf(bio_err,"shutdown accept socket\n");
1143         if (accept_socket >= 0)
1144                 {
1145                 SHUTDOWN2(accept_socket);
1146                 }
1147         }
1148
1149 static int init_ssl_connection(SSL *con)
1150         {
1151         int i;
1152         const char *str;
1153         X509 *peer;
1154         long verify_error;
1155         MS_STATIC char buf[BUFSIZ];
1156
1157         if ((i=SSL_accept(con)) <= 0)
1158                 {
1159                 if (BIO_sock_should_retry(i))
1160                         {
1161                         BIO_printf(bio_s_out,"DELAY\n");
1162                         return(1);
1163                         }
1164
1165                 BIO_printf(bio_err,"ERROR\n");
1166                 verify_error=SSL_get_verify_result(con);
1167                 if (verify_error != X509_V_OK)
1168                         {
1169                         BIO_printf(bio_err,"verify error:%s\n",
1170                                 X509_verify_cert_error_string(verify_error));
1171                         }
1172                 else
1173                         ERR_print_errors(bio_err);
1174                 return(0);
1175                 }
1176
1177         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1178
1179         peer=SSL_get_peer_certificate(con);
1180         if (peer != NULL)
1181                 {
1182                 BIO_printf(bio_s_out,"Client certificate\n");
1183                 PEM_write_bio_X509(bio_s_out,peer);
1184                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
1185                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1186                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
1187                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1188                 X509_free(peer);
1189                 }
1190
1191         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
1192                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1193         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1194         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1195         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1196         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1197                 TLS1_FLAGS_TLS_PADDING_BUG)
1198                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1199
1200         return(1);
1201         }
1202
1203 #ifndef OPENSSL_NO_DH
1204 static DH *load_dh_param(char *dhfile)
1205         {
1206         DH *ret=NULL;
1207         BIO *bio;
1208
1209         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1210                 goto err;
1211         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1212 err:
1213         if (bio != NULL) BIO_free(bio);
1214         return(ret);
1215         }
1216 #endif
1217
1218 #if 0
1219 static int load_CA(SSL_CTX *ctx, char *file)
1220         {
1221         FILE *in;
1222         X509 *x=NULL;
1223
1224         if ((in=fopen(file,"r")) == NULL)
1225                 return(0);
1226
1227         for (;;)
1228                 {
1229                 if (PEM_read_X509(in,&x,NULL) == NULL)
1230                         break;
1231                 SSL_CTX_add_client_CA(ctx,x);
1232                 }
1233         if (x != NULL) X509_free(x);
1234         fclose(in);
1235         return(1);
1236         }
1237 #endif
1238
1239 static int www_body(char *hostname, int s, unsigned char *context)
1240         {
1241         char *buf=NULL;
1242         int ret=1;
1243         int i,j,k,blank,dot;
1244         struct stat st_buf;
1245         SSL *con;
1246         SSL_CIPHER *c;
1247         BIO *io,*ssl_bio,*sbio;
1248         long total_bytes;
1249
1250         buf=OPENSSL_malloc(bufsize);
1251         if (buf == NULL) return(0);
1252         io=BIO_new(BIO_f_buffer());
1253         ssl_bio=BIO_new(BIO_f_ssl());
1254         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1255
1256 #ifdef FIONBIO  
1257         if (s_nbio)
1258                 {
1259                 unsigned long sl=1;
1260
1261                 if (!s_quiet)
1262                         BIO_printf(bio_err,"turning on non blocking io\n");
1263                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1264                         ERR_print_errors(bio_err);
1265                 }
1266 #endif
1267
1268         /* lets make the output buffer a reasonable size */
1269         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1270
1271         if ((con=SSL_new(ctx)) == NULL) goto err;
1272         if(context) SSL_set_session_id_context(con, context,
1273                                                strlen((char *)context));
1274
1275         sbio=BIO_new_socket(s,BIO_NOCLOSE);
1276         if (s_nbio_test)
1277                 {
1278                 BIO *test;
1279
1280                 test=BIO_new(BIO_f_nbio_test());
1281                 sbio=BIO_push(test,sbio);
1282                 }
1283         SSL_set_bio(con,sbio,sbio);
1284         SSL_set_accept_state(con);
1285
1286         /* SSL_set_fd(con,s); */
1287         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1288         BIO_push(io,ssl_bio);
1289 #ifdef CHARSET_EBCDIC
1290         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
1291 #endif
1292
1293         if (s_debug)
1294                 {
1295                 con->debug=1;
1296                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
1297                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1298                 }
1299
1300         blank=0;
1301         for (;;)
1302                 {
1303                 if (hack)
1304                         {
1305                         i=SSL_accept(con);
1306
1307                         switch (SSL_get_error(con,i))
1308                                 {
1309                         case SSL_ERROR_NONE:
1310                                 break;
1311                         case SSL_ERROR_WANT_WRITE:
1312                         case SSL_ERROR_WANT_READ:
1313                         case SSL_ERROR_WANT_X509_LOOKUP:
1314                                 continue;
1315                         case SSL_ERROR_SYSCALL:
1316                         case SSL_ERROR_SSL:
1317                         case SSL_ERROR_ZERO_RETURN:
1318                                 ret=1;
1319                                 goto err;
1320                                 /* break; */
1321                                 }
1322
1323                         SSL_renegotiate(con);
1324                         SSL_write(con,NULL,0);
1325                         }
1326
1327                 i=BIO_gets(io,buf,bufsize-1);
1328                 if (i < 0) /* error */
1329                         {
1330                         if (!BIO_should_retry(io))
1331                                 {
1332                                 if (!s_quiet)
1333                                         ERR_print_errors(bio_err);
1334                                 goto err;
1335                                 }
1336                         else
1337                                 {
1338                                 BIO_printf(bio_s_out,"read R BLOCK\n");
1339 #ifndef OPENSSL_SYS_MSDOS
1340                                 sleep(1);
1341 #endif
1342                                 continue;
1343                                 }
1344                         }
1345                 else if (i == 0) /* end of input */
1346                         {
1347                         ret=1;
1348                         goto end;
1349                         }
1350
1351                 /* else we have data */
1352                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1353                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1354                         {
1355                         char *p;
1356                         X509 *peer;
1357                         STACK_OF(SSL_CIPHER) *sk;
1358                         static char *space="                          ";
1359
1360                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1361                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
1362                         BIO_puts(io,"<pre>\n");
1363 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1364                         BIO_puts(io,"\n");
1365                         for (i=0; i<local_argc; i++)
1366                                 {
1367                                 BIO_puts(io,local_argv[i]);
1368                                 BIO_write(io," ",1);
1369                                 }
1370                         BIO_puts(io,"\n");
1371
1372                         /* The following is evil and should not really
1373                          * be done */
1374                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1375                         sk=SSL_get_ciphers(con);
1376                         j=sk_SSL_CIPHER_num(sk);
1377                         for (i=0; i<j; i++)
1378                                 {
1379                                 c=sk_SSL_CIPHER_value(sk,i);
1380                                 BIO_printf(io,"%-11s:%-25s",
1381                                         SSL_CIPHER_get_version(c),
1382                                         SSL_CIPHER_get_name(c));
1383                                 if ((((i+1)%2) == 0) && (i+1 != j))
1384                                         BIO_puts(io,"\n");
1385                                 }
1386                         BIO_puts(io,"\n");
1387                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1388                         if (p != NULL)
1389                                 {
1390                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1391                                 j=i=0;
1392                                 while (*p)
1393                                         {
1394                                         if (*p == ':')
1395                                                 {
1396                                                 BIO_write(io,space,26-j);
1397                                                 i++;
1398                                                 j=0;
1399                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1400                                                 }
1401                                         else
1402                                                 {
1403                                                 BIO_write(io,p,1);
1404                                                 j++;
1405                                                 }
1406                                         p++;
1407                                         }
1408                                 BIO_puts(io,"\n");
1409                                 }
1410                         BIO_printf(io,((con->hit)
1411                                 ?"---\nReused, "
1412                                 :"---\nNew, "));
1413                         c=SSL_get_current_cipher(con);
1414                         BIO_printf(io,"%s, Cipher is %s\n",
1415                                 SSL_CIPHER_get_version(c),
1416                                 SSL_CIPHER_get_name(c));
1417                         SSL_SESSION_print(io,SSL_get_session(con));
1418                         BIO_printf(io,"---\n");
1419                         print_stats(io,SSL_get_SSL_CTX(con));
1420                         BIO_printf(io,"---\n");
1421                         peer=SSL_get_peer_certificate(con);
1422                         if (peer != NULL)
1423                                 {
1424                                 BIO_printf(io,"Client certificate\n");
1425                                 X509_print(io,peer);
1426                                 PEM_write_bio_X509(io,peer);
1427                                 }
1428                         else
1429                                 BIO_puts(io,"no client certificate available\n");
1430                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1431                         break;
1432                         }
1433                 else if ((www == 2 || www == 3)
1434                          && (strncmp("GET /",buf,5) == 0))
1435                         {
1436                         BIO *file;
1437                         char *p,*e;
1438                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1439
1440                         /* skip the '/' */
1441                         p= &(buf[5]);
1442
1443                         dot = 1;
1444                         for (e=p; *e != '\0'; e++)
1445                                 {
1446                                 if (e[0] == ' ')
1447                                         break;
1448
1449                                 switch (dot)
1450                                         {
1451                                 case 1:
1452                                         dot = (e[0] == '.') ? 2 : 0;
1453                                         break;
1454                                 case 2:
1455                                         dot = (e[0] == '.') ? 3 : 0;
1456                                         break;
1457                                 case 3:
1458                                         dot = (e[0] == '/') ? -1 : 0;
1459                                         break;
1460                                         }
1461                                 if (dot == 0)
1462                                         dot = (e[0] == '/') ? 1 : 0;
1463                                 }
1464                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
1465
1466                         if (*e == '\0')
1467                                 {
1468                                 BIO_puts(io,text);
1469                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1470                                 break;
1471                                 }
1472                         *e='\0';
1473
1474                         if (dot)
1475                                 {
1476                                 BIO_puts(io,text);
1477                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1478                                 break;
1479                                 }
1480
1481                         if (*p == '/')
1482                                 {
1483                                 BIO_puts(io,text);
1484                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1485                                 break;
1486                                 }
1487
1488 #if 0
1489                         /* append if a directory lookup */
1490                         if (e[-1] == '/')
1491                                 strcat(p,"index.html");
1492 #endif
1493
1494                         /* if a directory, do the index thang */
1495                         if (stat(p,&st_buf) < 0)
1496                                 {
1497                                 BIO_puts(io,text);
1498                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1499                                 ERR_print_errors(io);
1500                                 break;
1501                                 }
1502                         if (S_ISDIR(st_buf.st_mode))
1503                                 {
1504 #if 0 /* must check buffer size */
1505                                 strcat(p,"/index.html");
1506 #else
1507                                 BIO_puts(io,text);
1508                                 BIO_printf(io,"'%s' is a directory\r\n",p);
1509                                 break;
1510 #endif
1511                                 }
1512
1513                         if ((file=BIO_new_file(p,"r")) == NULL)
1514                                 {
1515                                 BIO_puts(io,text);
1516                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1517                                 ERR_print_errors(io);
1518                                 break;
1519                                 }
1520
1521                         if (!s_quiet)
1522                                 BIO_printf(bio_err,"FILE:%s\n",p);
1523
1524                         if (www == 2)
1525                                 {
1526                                 i=strlen(p);
1527                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1528                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1529                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1530                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1531                                 else
1532                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1533                                 }
1534                         /* send the file */
1535                         total_bytes=0;
1536                         for (;;)
1537                                 {
1538                                 i=BIO_read(file,buf,bufsize);
1539                                 if (i <= 0) break;
1540
1541 #ifdef RENEG
1542                                 total_bytes+=i;
1543                                 fprintf(stderr,"%d\n",i);
1544                                 if (total_bytes > 3*1024)
1545                                         {
1546                                         total_bytes=0;
1547                                         fprintf(stderr,"RENEGOTIATE\n");
1548                                         SSL_renegotiate(con);
1549                                         }
1550 #endif
1551
1552                                 for (j=0; j<i; )
1553                                         {
1554 #ifdef RENEG
1555 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1556 #endif
1557                                         k=BIO_write(io,&(buf[j]),i-j);
1558                                         if (k <= 0)
1559                                                 {
1560                                                 if (!BIO_should_retry(io))
1561                                                         goto write_error;
1562                                                 else
1563                                                         {
1564                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1565                                                         }
1566                                                 }
1567                                         else
1568                                                 {
1569                                                 j+=k;
1570                                                 }
1571                                         }
1572                                 }
1573 write_error:
1574                         BIO_free(file);
1575                         break;
1576                         }
1577                 }
1578
1579         for (;;)
1580                 {
1581                 i=(int)BIO_flush(io);
1582                 if (i <= 0)
1583                         {
1584                         if (!BIO_should_retry(io))
1585                                 break;
1586                         }
1587                 else
1588                         break;
1589                 }
1590 end:
1591 #if 1
1592         /* make sure we re-use sessions */
1593         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1594 #else
1595         /* This kills performance */
1596 /*      SSL_shutdown(con); A shutdown gets sent in the
1597  *      BIO_free_all(io) procession */
1598 #endif
1599
1600 err:
1601
1602         if (ret >= 0)
1603                 BIO_printf(bio_s_out,"ACCEPT\n");
1604
1605         if (buf != NULL) OPENSSL_free(buf);
1606         if (io != NULL) BIO_free_all(io);
1607 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1608         return(ret);
1609         }
1610
1611 #ifndef OPENSSL_NO_RSA
1612 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1613         {
1614         static RSA *rsa_tmp=NULL;
1615
1616         if (rsa_tmp == NULL)
1617                 {
1618                 if (!s_quiet)
1619                         {
1620                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1621                         (void)BIO_flush(bio_err);
1622                         }
1623                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1624                 if (!s_quiet)
1625                         {
1626                         BIO_printf(bio_err,"\n");
1627                         (void)BIO_flush(bio_err);
1628                         }
1629                 }
1630         return(rsa_tmp);
1631         }
1632 #endif
1633
1634 #define MAX_SESSION_ID_ATTEMPTS 10
1635 static int generate_session_id(const SSL *ssl, unsigned char *id,
1636                                 unsigned int *id_len)
1637         {
1638         unsigned int count = 0;
1639         do      {
1640                 RAND_pseudo_bytes(id, *id_len);
1641                 /* Prefix the session_id with the required prefix. NB: If our
1642                  * prefix is too long, clip it - but there will be worse effects
1643                  * anyway, eg. the server could only possibly create 1 session
1644                  * ID (ie. the prefix!) so all future session negotiations will
1645                  * fail due to conflicts. */
1646                 memcpy(id, session_id_prefix,
1647                         (strlen(session_id_prefix) < *id_len) ?
1648                         strlen(session_id_prefix) : *id_len);
1649                 }
1650         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
1651                 (++count < MAX_SESSION_ID_ATTEMPTS));
1652         if(count >= MAX_SESSION_ID_ATTEMPTS)
1653                 return 0;
1654         return 1;
1655         }