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 * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 *    notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 *    notice, this list of conditions and the following disclaimer in
70 *    the documentation and/or other materials provided with the
71 *    distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 *    software must display the following acknowledgment:
75 *    "This product includes software developed by the OpenSSL Project
76 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 *    endorse or promote products derived from this software without
80 *    prior written permission. For written permission, please contact
81 *    openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 *    nor may "OpenSSL" appear in their names without prior written
85 *    permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 *    acknowledgment:
89 *    "This product includes software developed by the OpenSSL Project
90 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com).  This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111
112#include <assert.h>
113#include <stdio.h>
114#include <stdlib.h>
115#include <string.h>
116#include <sys/types.h>
117#include <sys/stat.h>
118#include <openssl/e_os2.h>
119#ifdef OPENSSL_NO_STDIO
120#define APPS_WIN16
121#endif
122
123/* With IPv6, it looks like Digital has mixed up the proper order of
124   recursive header file inclusion, resulting in the compiler complaining
125   that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
126   is needed to have fileno() declared correctly...  So let's define u_int */
127#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
128#define __U_INT
129typedef unsigned int u_int;
130#endif
131
132#include <openssl/lhash.h>
133#include <openssl/bn.h>
134#define USE_SOCKETS
135#include "apps.h"
136#include <openssl/err.h>
137#include <openssl/pem.h>
138#include <openssl/x509.h>
139#include <openssl/ssl.h>
140#include <openssl/rand.h>
141#include "s_apps.h"
142
143#ifdef OPENSSL_SYS_WINCE
144/* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
145#ifdef fileno
146#undef fileno
147#endif
148#define fileno(a) (int)_fileno(a)
149#endif
150
151#if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
152/* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
153#undef FIONBIO
154#endif
155
156#ifndef OPENSSL_NO_RSA
157static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
158#endif
159static int sv_body(char *hostname, int s, unsigned char *context);
160static int www_body(char *hostname, int s, unsigned char *context);
161static void close_accept_socket(void );
162static void sv_usage(void);
163static int init_ssl_connection(SSL *s);
164static void print_stats(BIO *bp,SSL_CTX *ctx);
165static int generate_session_id(const SSL *ssl, unsigned char *id,
166				unsigned int *id_len);
167#ifndef OPENSSL_NO_DH
168static DH *load_dh_param(char *dhfile);
169static DH *get_dh512(void);
170#endif
171#ifdef MONOLITH
172static void s_server_init(void);
173#endif
174
175#ifndef S_ISDIR
176# if defined(_S_IFMT) && defined(_S_IFDIR)
177#  define S_ISDIR(a)	(((a) & _S_IFMT) == _S_IFDIR)
178# else
179#  define S_ISDIR(a)	(((a) & S_IFMT) == S_IFDIR)
180# endif
181#endif
182
183#ifndef OPENSSL_NO_DH
184static unsigned char dh512_p[]={
185	0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
186	0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
187	0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
188	0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
189	0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
190	0x47,0x74,0xE8,0x33,
191	};
192static unsigned char dh512_g[]={
193	0x02,
194	};
195
196static DH *get_dh512(void)
197	{
198	DH *dh=NULL;
199
200	if ((dh=DH_new()) == NULL) return(NULL);
201	dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
202	dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
203	if ((dh->p == NULL) || (dh->g == NULL))
204		return(NULL);
205	return(dh);
206	}
207#endif
208
209/* static int load_CA(SSL_CTX *ctx, char *file);*/
210
211#undef BUFSIZZ
212#define BUFSIZZ	16*1024
213static int bufsize=BUFSIZZ;
214static int accept_socket= -1;
215
216#define TEST_CERT	"server.pem"
217#undef PROG
218#define PROG		s_server_main
219
220extern int verify_depth;
221
222static char *cipher=NULL;
223static int s_server_verify=SSL_VERIFY_NONE;
224static int s_server_session_id_context = 1; /* anything will do */
225static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
226static char *s_dcert_file=NULL,*s_dkey_file=NULL;
227#ifdef FIONBIO
228static int s_nbio=0;
229#endif
230static int s_nbio_test=0;
231int s_crlf=0;
232static SSL_CTX *ctx=NULL;
233static int www=0;
234
235static BIO *bio_s_out=NULL;
236static int s_debug=0;
237static int s_msg=0;
238static int s_quiet=0;
239
240static int hack=0;
241#ifndef OPENSSL_NO_ENGINE
242static char *engine_id=NULL;
243#endif
244static const char *session_id_prefix=NULL;
245
246#ifdef MONOLITH
247static void s_server_init(void)
248	{
249	accept_socket=-1;
250	cipher=NULL;
251	s_server_verify=SSL_VERIFY_NONE;
252	s_dcert_file=NULL;
253	s_dkey_file=NULL;
254	s_cert_file=TEST_CERT;
255	s_key_file=NULL;
256#ifdef FIONBIO
257	s_nbio=0;
258#endif
259	s_nbio_test=0;
260	ctx=NULL;
261	www=0;
262
263	bio_s_out=NULL;
264	s_debug=0;
265	s_msg=0;
266	s_quiet=0;
267	hack=0;
268#ifndef OPENSSL_NO_ENGINE
269	engine_id=NULL;
270#endif
271	}
272#endif
273
274static void sv_usage(void)
275	{
276	BIO_printf(bio_err,"usage: s_server [args ...]\n");
277	BIO_printf(bio_err,"\n");
278	BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
279	BIO_printf(bio_err," -context arg  - set session ID context\n");
280	BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
281	BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
282	BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
283	BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
284	BIO_printf(bio_err," -key arg      - Private Key file to use, PEM format assumed, in cert file if\n");
285	BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
286	BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
287	BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
288	BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
289	BIO_printf(bio_err,"                 or a default set of parameters is used\n");
290#ifdef FIONBIO
291	BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
292#endif
293	BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
294	BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
295	BIO_printf(bio_err," -debug        - Print more output\n");
296	BIO_printf(bio_err," -msg          - Show protocol messages\n");
297	BIO_printf(bio_err," -state        - Print the SSL states\n");
298	BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
299	BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
300	BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
301	BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
302	BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
303	BIO_printf(bio_err," -quiet        - No server output\n");
304	BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
305	BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
306	BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
307	BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
308	BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
309	BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
310	BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
311#ifndef OPENSSL_NO_DH
312	BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
313#endif
314	BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
315	BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
316	BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
317	BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
318        BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
319#ifndef OPENSSL_NO_ENGINE
320	BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
321#endif
322	BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
323	BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
324	}
325
326static int local_argc=0;
327static char **local_argv;
328
329#ifdef CHARSET_EBCDIC
330static int ebcdic_new(BIO *bi);
331static int ebcdic_free(BIO *a);
332static int ebcdic_read(BIO *b, char *out, int outl);
333static int ebcdic_write(BIO *b, const char *in, int inl);
334static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
335static int ebcdic_gets(BIO *bp, char *buf, int size);
336static int ebcdic_puts(BIO *bp, const char *str);
337
338#define BIO_TYPE_EBCDIC_FILTER	(18|0x0200)
339static BIO_METHOD methods_ebcdic=
340	{
341	BIO_TYPE_EBCDIC_FILTER,
342	"EBCDIC/ASCII filter",
343	ebcdic_write,
344	ebcdic_read,
345	ebcdic_puts,
346	ebcdic_gets,
347	ebcdic_ctrl,
348	ebcdic_new,
349	ebcdic_free,
350	};
351
352typedef struct
353{
354	size_t	alloced;
355	char	buff[1];
356} EBCDIC_OUTBUFF;
357
358BIO_METHOD *BIO_f_ebcdic_filter()
359{
360	return(&methods_ebcdic);
361}
362
363static int ebcdic_new(BIO *bi)
364{
365	EBCDIC_OUTBUFF *wbuf;
366
367	wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
368	wbuf->alloced = 1024;
369	wbuf->buff[0] = '\0';
370
371	bi->ptr=(char *)wbuf;
372	bi->init=1;
373	bi->flags=0;
374	return(1);
375}
376
377static int ebcdic_free(BIO *a)
378{
379	if (a == NULL) return(0);
380	if (a->ptr != NULL)
381		OPENSSL_free(a->ptr);
382	a->ptr=NULL;
383	a->init=0;
384	a->flags=0;
385	return(1);
386}
387
388static int ebcdic_read(BIO *b, char *out, int outl)
389{
390	int ret=0;
391
392	if (out == NULL || outl == 0) return(0);
393	if (b->next_bio == NULL) return(0);
394
395	ret=BIO_read(b->next_bio,out,outl);
396	if (ret > 0)
397		ascii2ebcdic(out,out,ret);
398	return(ret);
399}
400
401static int ebcdic_write(BIO *b, const char *in, int inl)
402{
403	EBCDIC_OUTBUFF *wbuf;
404	int ret=0;
405	int num;
406	unsigned char n;
407
408	if ((in == NULL) || (inl <= 0)) return(0);
409	if (b->next_bio == NULL) return(0);
410
411	wbuf=(EBCDIC_OUTBUFF *)b->ptr;
412
413	if (inl > (num = wbuf->alloced))
414	{
415		num = num + num;  /* double the size */
416		if (num < inl)
417			num = inl;
418		OPENSSL_free(wbuf);
419		wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
420
421		wbuf->alloced = num;
422		wbuf->buff[0] = '\0';
423
424		b->ptr=(char *)wbuf;
425	}
426
427	ebcdic2ascii(wbuf->buff, in, inl);
428
429	ret=BIO_write(b->next_bio, wbuf->buff, inl);
430
431	return(ret);
432}
433
434static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
435{
436	long ret;
437
438	if (b->next_bio == NULL) return(0);
439	switch (cmd)
440	{
441	case BIO_CTRL_DUP:
442		ret=0L;
443		break;
444	default:
445		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
446		break;
447	}
448	return(ret);
449}
450
451static int ebcdic_gets(BIO *bp, char *buf, int size)
452{
453	int i, ret=0;
454	if (bp->next_bio == NULL) return(0);
455/*	return(BIO_gets(bp->next_bio,buf,size));*/
456	for (i=0; i<size-1; ++i)
457	{
458		ret = ebcdic_read(bp,&buf[i],1);
459		if (ret <= 0)
460			break;
461		else if (buf[i] == '\n')
462		{
463			++i;
464			break;
465		}
466	}
467	if (i < size)
468		buf[i] = '\0';
469	return (ret < 0 && i == 0) ? ret : i;
470}
471
472static int ebcdic_puts(BIO *bp, const char *str)
473{
474	if (bp->next_bio == NULL) return(0);
475	return ebcdic_write(bp, str, strlen(str));
476}
477#endif
478
479int MAIN(int, char **);
480
481int MAIN(int argc, char *argv[])
482	{
483	X509_STORE *store = NULL;
484	int vflags = 0;
485	short port=PORT;
486	char *CApath=NULL,*CAfile=NULL;
487	char *context = NULL;
488	char *dhfile = NULL;
489	int badop=0,bugs=0;
490	int ret=1;
491	int off=0;
492	int no_tmp_rsa=0,no_dhe=0,nocert=0;
493	int state=0;
494	SSL_METHOD *meth=NULL;
495#ifndef OPENSSL_NO_ENGINE
496	ENGINE *e=NULL;
497#endif
498	char *inrand=NULL;
499
500#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
501	meth=SSLv23_server_method();
502#elif !defined(OPENSSL_NO_SSL3)
503	meth=SSLv3_server_method();
504#elif !defined(OPENSSL_NO_SSL2)
505	meth=SSLv2_server_method();
506#endif
507
508	local_argc=argc;
509	local_argv=argv;
510
511	apps_startup();
512#ifdef MONOLITH
513	s_server_init();
514#endif
515
516	if (bio_err == NULL)
517		bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
518
519	if (!load_config(bio_err, NULL))
520		goto end;
521
522	verify_depth=0;
523#ifdef FIONBIO
524	s_nbio=0;
525#endif
526	s_nbio_test=0;
527
528	argc--;
529	argv++;
530
531	while (argc >= 1)
532		{
533		if	((strcmp(*argv,"-port") == 0) ||
534			 (strcmp(*argv,"-accept") == 0))
535			{
536			if (--argc < 1) goto bad;
537			if (!extract_port(*(++argv),&port))
538				goto bad;
539			}
540		else if	(strcmp(*argv,"-verify") == 0)
541			{
542			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
543			if (--argc < 1) goto bad;
544			verify_depth=atoi(*(++argv));
545			BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
546			}
547		else if	(strcmp(*argv,"-Verify") == 0)
548			{
549			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
550				SSL_VERIFY_CLIENT_ONCE;
551			if (--argc < 1) goto bad;
552			verify_depth=atoi(*(++argv));
553			BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
554			}
555		else if	(strcmp(*argv,"-context") == 0)
556			{
557			if (--argc < 1) goto bad;
558			context= *(++argv);
559			}
560		else if	(strcmp(*argv,"-cert") == 0)
561			{
562			if (--argc < 1) goto bad;
563			s_cert_file= *(++argv);
564			}
565		else if	(strcmp(*argv,"-key") == 0)
566			{
567			if (--argc < 1) goto bad;
568			s_key_file= *(++argv);
569			}
570		else if	(strcmp(*argv,"-dhparam") == 0)
571			{
572			if (--argc < 1) goto bad;
573			dhfile = *(++argv);
574			}
575		else if	(strcmp(*argv,"-dcert") == 0)
576			{
577			if (--argc < 1) goto bad;
578			s_dcert_file= *(++argv);
579			}
580		else if	(strcmp(*argv,"-dkey") == 0)
581			{
582			if (--argc < 1) goto bad;
583			s_dkey_file= *(++argv);
584			}
585		else if (strcmp(*argv,"-nocert") == 0)
586			{
587			nocert=1;
588			}
589		else if	(strcmp(*argv,"-CApath") == 0)
590			{
591			if (--argc < 1) goto bad;
592			CApath= *(++argv);
593			}
594		else if (strcmp(*argv,"-crl_check") == 0)
595			{
596			vflags |= X509_V_FLAG_CRL_CHECK;
597			}
598		else if (strcmp(*argv,"-crl_check") == 0)
599			{
600			vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
601			}
602		else if	(strcmp(*argv,"-serverpref") == 0)
603			{ off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
604		else if	(strcmp(*argv,"-cipher") == 0)
605			{
606			if (--argc < 1) goto bad;
607			cipher= *(++argv);
608			}
609		else if	(strcmp(*argv,"-CAfile") == 0)
610			{
611			if (--argc < 1) goto bad;
612			CAfile= *(++argv);
613			}
614#ifdef FIONBIO
615		else if	(strcmp(*argv,"-nbio") == 0)
616			{ s_nbio=1; }
617#endif
618		else if	(strcmp(*argv,"-nbio_test") == 0)
619			{
620#ifdef FIONBIO
621			s_nbio=1;
622#endif
623			s_nbio_test=1;
624			}
625		else if	(strcmp(*argv,"-debug") == 0)
626			{ s_debug=1; }
627		else if	(strcmp(*argv,"-msg") == 0)
628			{ s_msg=1; }
629		else if	(strcmp(*argv,"-hack") == 0)
630			{ hack=1; }
631		else if	(strcmp(*argv,"-state") == 0)
632			{ state=1; }
633		else if	(strcmp(*argv,"-crlf") == 0)
634			{ s_crlf=1; }
635		else if	(strcmp(*argv,"-quiet") == 0)
636			{ s_quiet=1; }
637		else if	(strcmp(*argv,"-bugs") == 0)
638			{ bugs=1; }
639		else if	(strcmp(*argv,"-no_tmp_rsa") == 0)
640			{ no_tmp_rsa=1; }
641		else if	(strcmp(*argv,"-no_dhe") == 0)
642			{ no_dhe=1; }
643		else if	(strcmp(*argv,"-www") == 0)
644			{ www=1; }
645		else if	(strcmp(*argv,"-WWW") == 0)
646			{ www=2; }
647		else if	(strcmp(*argv,"-HTTP") == 0)
648			{ www=3; }
649		else if	(strcmp(*argv,"-no_ssl2") == 0)
650			{ off|=SSL_OP_NO_SSLv2; }
651		else if	(strcmp(*argv,"-no_ssl3") == 0)
652			{ off|=SSL_OP_NO_SSLv3; }
653		else if	(strcmp(*argv,"-no_tls1") == 0)
654			{ off|=SSL_OP_NO_TLSv1; }
655#ifndef OPENSSL_NO_SSL2
656		else if	(strcmp(*argv,"-ssl2") == 0)
657			{ meth=SSLv2_server_method(); }
658#endif
659#ifndef OPENSSL_NO_SSL3
660		else if	(strcmp(*argv,"-ssl3") == 0)
661			{ meth=SSLv3_server_method(); }
662#endif
663#ifndef OPENSSL_NO_TLS1
664		else if	(strcmp(*argv,"-tls1") == 0)
665			{ meth=TLSv1_server_method(); }
666#endif
667		else if (strcmp(*argv, "-id_prefix") == 0)
668			{
669			if (--argc < 1) goto bad;
670			session_id_prefix = *(++argv);
671			}
672#ifndef OPENSSL_NO_ENGINE
673		else if (strcmp(*argv,"-engine") == 0)
674			{
675			if (--argc < 1) goto bad;
676			engine_id= *(++argv);
677			}
678#endif
679		else if (strcmp(*argv,"-rand") == 0)
680			{
681			if (--argc < 1) goto bad;
682			inrand= *(++argv);
683			}
684		else
685			{
686			BIO_printf(bio_err,"unknown option %s\n",*argv);
687			badop=1;
688			break;
689			}
690		argc--;
691		argv++;
692		}
693	if (badop)
694		{
695bad:
696		sv_usage();
697		goto end;
698		}
699
700	SSL_load_error_strings();
701	OpenSSL_add_ssl_algorithms();
702
703#ifndef OPENSSL_NO_ENGINE
704        e = setup_engine(bio_err, engine_id, 1);
705#endif
706
707	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
708		&& !RAND_status())
709		{
710		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
711		}
712	if (inrand != NULL)
713		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
714			app_RAND_load_files(inrand));
715
716	if (bio_s_out == NULL)
717		{
718		if (s_quiet && !s_debug && !s_msg)
719			{
720			bio_s_out=BIO_new(BIO_s_null());
721			}
722		else
723			{
724			if (bio_s_out == NULL)
725				bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
726			}
727		}
728
729#if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA)
730	if (nocert)
731#endif
732		{
733		s_cert_file=NULL;
734		s_key_file=NULL;
735		s_dcert_file=NULL;
736		s_dkey_file=NULL;
737		}
738
739	ctx=SSL_CTX_new(meth);
740	if (ctx == NULL)
741		{
742		ERR_print_errors(bio_err);
743		goto end;
744		}
745	if (session_id_prefix)
746		{
747		if(strlen(session_id_prefix) >= 32)
748			BIO_printf(bio_err,
749"warning: id_prefix is too long, only one new session will be possible\n");
750		else if(strlen(session_id_prefix) >= 16)
751			BIO_printf(bio_err,
752"warning: id_prefix is too long if you use SSLv2\n");
753		if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
754			{
755			BIO_printf(bio_err,"error setting 'id_prefix'\n");
756			ERR_print_errors(bio_err);
757			goto end;
758			}
759		BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
760		}
761	SSL_CTX_set_quiet_shutdown(ctx,1);
762	if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
763	if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
764	SSL_CTX_set_options(ctx,off);
765
766	if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
767
768	SSL_CTX_sess_set_cache_size(ctx,128);
769
770#if 0
771	if (cipher == NULL) cipher=getenv("SSL_CIPHER");
772#endif
773
774#if 0
775	if (s_cert_file == NULL)
776		{
777		BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
778		goto end;
779		}
780#endif
781
782	if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
783		(!SSL_CTX_set_default_verify_paths(ctx)))
784		{
785		/* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
786		ERR_print_errors(bio_err);
787		/* goto end; */
788		}
789	store = SSL_CTX_get_cert_store(ctx);
790	X509_STORE_set_flags(store, vflags);
791
792#ifndef OPENSSL_NO_DH
793	if (!no_dhe)
794		{
795		DH *dh=NULL;
796
797		if (dhfile)
798			dh = load_dh_param(dhfile);
799		else if (s_cert_file)
800			dh = load_dh_param(s_cert_file);
801
802		if (dh != NULL)
803			{
804			BIO_printf(bio_s_out,"Setting temp DH parameters\n");
805			}
806		else
807			{
808			BIO_printf(bio_s_out,"Using default temp DH parameters\n");
809			dh=get_dh512();
810			}
811		(void)BIO_flush(bio_s_out);
812
813		SSL_CTX_set_tmp_dh(ctx,dh);
814		DH_free(dh);
815		}
816#endif
817
818	if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
819		goto end;
820	if (s_dcert_file != NULL)
821		{
822		if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
823			goto end;
824		}
825
826#ifndef OPENSSL_NO_RSA
827#if 1
828	if (!no_tmp_rsa)
829		SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
830#else
831	if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
832		{
833		RSA *rsa;
834
835		BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
836		BIO_flush(bio_s_out);
837
838		rsa=RSA_generate_key(512,RSA_F4,NULL);
839
840		if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
841			{
842			ERR_print_errors(bio_err);
843			goto end;
844			}
845		RSA_free(rsa);
846		BIO_printf(bio_s_out,"\n");
847		}
848#endif
849#endif
850
851	if (cipher != NULL)
852		if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
853		BIO_printf(bio_err,"error setting cipher list\n");
854		ERR_print_errors(bio_err);
855		goto end;
856	}
857	SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
858	SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
859		sizeof s_server_session_id_context);
860
861	if (CAfile != NULL)
862	    SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
863
864	BIO_printf(bio_s_out,"ACCEPT\n");
865	if (www)
866		do_server(port,&accept_socket,www_body, context);
867	else
868		do_server(port,&accept_socket,sv_body, context);
869	print_stats(bio_s_out,ctx);
870	ret=0;
871end:
872	if (ctx != NULL) SSL_CTX_free(ctx);
873	if (bio_s_out != NULL)
874		{
875		BIO_free(bio_s_out);
876		bio_s_out=NULL;
877		}
878	apps_shutdown();
879	OPENSSL_EXIT(ret);
880	}
881
882static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
883	{
884	BIO_printf(bio,"%4ld items in the session cache\n",
885		SSL_CTX_sess_number(ssl_ctx));
886	BIO_printf(bio,"%4d client connects (SSL_connect())\n",
887		SSL_CTX_sess_connect(ssl_ctx));
888	BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
889		SSL_CTX_sess_connect_renegotiate(ssl_ctx));
890	BIO_printf(bio,"%4d client connects that finished\n",
891		SSL_CTX_sess_connect_good(ssl_ctx));
892	BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
893		SSL_CTX_sess_accept(ssl_ctx));
894	BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
895		SSL_CTX_sess_accept_renegotiate(ssl_ctx));
896	BIO_printf(bio,"%4d server accepts that finished\n",
897		SSL_CTX_sess_accept_good(ssl_ctx));
898	BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
899	BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
900	BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
901	BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
902	BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
903		SSL_CTX_sess_cache_full(ssl_ctx),
904		SSL_CTX_sess_get_cache_size(ssl_ctx));
905	}
906
907static int sv_body(char *hostname, int s, unsigned char *context)
908	{
909	char *buf=NULL;
910	fd_set readfds;
911	int ret=1,width;
912	int k,i;
913	unsigned long l;
914	SSL *con=NULL;
915	BIO *sbio;
916#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
917	struct timeval tv;
918#endif
919
920	if ((buf=OPENSSL_malloc(bufsize)) == NULL)
921		{
922		BIO_printf(bio_err,"out of memory\n");
923		goto err;
924		}
925#ifdef FIONBIO
926	if (s_nbio)
927		{
928		unsigned long sl=1;
929
930		if (!s_quiet)
931			BIO_printf(bio_err,"turning on non blocking io\n");
932		if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
933			ERR_print_errors(bio_err);
934		}
935#endif
936
937	if (con == NULL) {
938		con=SSL_new(ctx);
939#ifndef OPENSSL_NO_KRB5
940		if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
941                        {
942                        kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE,
943								KRB5SVC);
944                        kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB,
945								KRB5KEYTAB);
946                        }
947#endif	/* OPENSSL_NO_KRB5 */
948		if(context)
949		      SSL_set_session_id_context(con, context,
950						 strlen((char *)context));
951	}
952	SSL_clear(con);
953
954	sbio=BIO_new_socket(s,BIO_NOCLOSE);
955	if (s_nbio_test)
956		{
957		BIO *test;
958
959		test=BIO_new(BIO_f_nbio_test());
960		sbio=BIO_push(test,sbio);
961		}
962	SSL_set_bio(con,sbio,sbio);
963	SSL_set_accept_state(con);
964	/* SSL_set_fd(con,s); */
965
966	if (s_debug)
967		{
968		con->debug=1;
969		BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
970		BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
971		}
972	if (s_msg)
973		{
974		SSL_set_msg_callback(con, msg_cb);
975		SSL_set_msg_callback_arg(con, bio_s_out);
976		}
977
978	width=s+1;
979	for (;;)
980		{
981		int read_from_terminal;
982		int read_from_sslcon;
983
984		read_from_terminal = 0;
985		read_from_sslcon = SSL_pending(con);
986
987		if (!read_from_sslcon)
988			{
989			FD_ZERO(&readfds);
990#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
991			FD_SET(fileno(stdin),&readfds);
992#endif
993			FD_SET(s,&readfds);
994			/* Note: under VMS with SOCKETSHR the second parameter is
995			 * currently of type (int *) whereas under other systems
996			 * it is (void *) if you don't have a cast it will choke
997			 * the compiler: if you do have a cast then you can either
998			 * go for (int *) or (void *).
999			 */
1000#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1001                        /* Under DOS (non-djgpp) and Windows we can't select on stdin: only
1002			 * on sockets. As a workaround we timeout the select every
1003			 * second and check for any keypress. In a proper Windows
1004			 * application we wouldn't do this because it is inefficient.
1005			 */
1006			tv.tv_sec = 1;
1007			tv.tv_usec = 0;
1008			i=select(width,(void *)&readfds,NULL,NULL,&tv);
1009			if((i < 0) || (!i && !_kbhit() ) )continue;
1010			if(_kbhit())
1011				read_from_terminal = 1;
1012#else
1013			i=select(width,(void *)&readfds,NULL,NULL,NULL);
1014			if (i <= 0) continue;
1015			if (FD_ISSET(fileno(stdin),&readfds))
1016				read_from_terminal = 1;
1017#endif
1018			if (FD_ISSET(s,&readfds))
1019				read_from_sslcon = 1;
1020			}
1021		if (read_from_terminal)
1022			{
1023			if (s_crlf)
1024				{
1025				int j, lf_num;
1026
1027				i=read(fileno(stdin), buf, bufsize/2);
1028				lf_num = 0;
1029				/* both loops are skipped when i <= 0 */
1030				for (j = 0; j < i; j++)
1031					if (buf[j] == '\n')
1032						lf_num++;
1033				for (j = i-1; j >= 0; j--)
1034					{
1035					buf[j+lf_num] = buf[j];
1036					if (buf[j] == '\n')
1037						{
1038						lf_num--;
1039						i++;
1040						buf[j+lf_num] = '\r';
1041						}
1042					}
1043				assert(lf_num == 0);
1044				}
1045			else
1046				i=read(fileno(stdin),buf,bufsize);
1047			if (!s_quiet)
1048				{
1049				if ((i <= 0) || (buf[0] == 'Q'))
1050					{
1051					BIO_printf(bio_s_out,"DONE\n");
1052					SHUTDOWN(s);
1053					close_accept_socket();
1054					ret= -11;
1055					goto err;
1056					}
1057				if ((i <= 0) || (buf[0] == 'q'))
1058					{
1059					BIO_printf(bio_s_out,"DONE\n");
1060					SHUTDOWN(s);
1061	/*				close_accept_socket();
1062					ret= -11;*/
1063					goto err;
1064					}
1065				if ((buf[0] == 'r') &&
1066					((buf[1] == '\n') || (buf[1] == '\r')))
1067					{
1068					SSL_renegotiate(con);
1069					i=SSL_do_handshake(con);
1070					printf("SSL_do_handshake -> %d\n",i);
1071					i=0; /*13; */
1072					continue;
1073					/* strcpy(buf,"server side RE-NEGOTIATE\n"); */
1074					}
1075				if ((buf[0] == 'R') &&
1076					((buf[1] == '\n') || (buf[1] == '\r')))
1077					{
1078					SSL_set_verify(con,
1079						SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1080					SSL_renegotiate(con);
1081					i=SSL_do_handshake(con);
1082					printf("SSL_do_handshake -> %d\n",i);
1083					i=0; /* 13; */
1084					continue;
1085					/* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1086					}
1087				if (buf[0] == 'P')
1088					{
1089					static char *str="Lets print some clear text\n";
1090					BIO_write(SSL_get_wbio(con),str,strlen(str));
1091					}
1092				if (buf[0] == 'S')
1093					{
1094					print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1095					}
1096				}
1097#ifdef CHARSET_EBCDIC
1098			ebcdic2ascii(buf,buf,i);
1099#endif
1100			l=k=0;
1101			for (;;)
1102				{
1103				/* should do a select for the write */
1104#ifdef RENEG
1105{ static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1106#endif
1107				k=SSL_write(con,&(buf[l]),(unsigned int)i);
1108				switch (SSL_get_error(con,k))
1109					{
1110				case SSL_ERROR_NONE:
1111					break;
1112				case SSL_ERROR_WANT_WRITE:
1113				case SSL_ERROR_WANT_READ:
1114				case SSL_ERROR_WANT_X509_LOOKUP:
1115					BIO_printf(bio_s_out,"Write BLOCK\n");
1116					break;
1117				case SSL_ERROR_SYSCALL:
1118				case SSL_ERROR_SSL:
1119					BIO_printf(bio_s_out,"ERROR\n");
1120					ERR_print_errors(bio_err);
1121					ret=1;
1122					goto err;
1123					/* break; */
1124				case SSL_ERROR_ZERO_RETURN:
1125					BIO_printf(bio_s_out,"DONE\n");
1126					ret=1;
1127					goto err;
1128					}
1129				l+=k;
1130				i-=k;
1131				if (i <= 0) break;
1132				}
1133			}
1134		if (read_from_sslcon)
1135			{
1136			if (!SSL_is_init_finished(con))
1137				{
1138				i=init_ssl_connection(con);
1139
1140				if (i < 0)
1141					{
1142					ret=0;
1143					goto err;
1144					}
1145				else if (i == 0)
1146					{
1147					ret=1;
1148					goto err;
1149					}
1150				}
1151			else
1152				{
1153again:
1154				i=SSL_read(con,(char *)buf,bufsize);
1155				switch (SSL_get_error(con,i))
1156					{
1157				case SSL_ERROR_NONE:
1158#ifdef CHARSET_EBCDIC
1159					ascii2ebcdic(buf,buf,i);
1160#endif
1161					write(fileno(stdout),buf,
1162						(unsigned int)i);
1163					if (SSL_pending(con)) goto again;
1164					break;
1165				case SSL_ERROR_WANT_WRITE:
1166				case SSL_ERROR_WANT_READ:
1167				case SSL_ERROR_WANT_X509_LOOKUP:
1168					BIO_printf(bio_s_out,"Read BLOCK\n");
1169					break;
1170				case SSL_ERROR_SYSCALL:
1171				case SSL_ERROR_SSL:
1172					BIO_printf(bio_s_out,"ERROR\n");
1173					ERR_print_errors(bio_err);
1174					ret=1;
1175					goto err;
1176				case SSL_ERROR_ZERO_RETURN:
1177					BIO_printf(bio_s_out,"DONE\n");
1178					ret=1;
1179					goto err;
1180					}
1181				}
1182			}
1183		}
1184err:
1185	BIO_printf(bio_s_out,"shutting down SSL\n");
1186#if 1
1187	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1188#else
1189	SSL_shutdown(con);
1190#endif
1191	if (con != NULL) SSL_free(con);
1192	BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1193	if (buf != NULL)
1194		{
1195		OPENSSL_cleanse(buf,bufsize);
1196		OPENSSL_free(buf);
1197		}
1198	if (ret >= 0)
1199		BIO_printf(bio_s_out,"ACCEPT\n");
1200	return(ret);
1201	}
1202
1203static void close_accept_socket(void)
1204	{
1205	BIO_printf(bio_err,"shutdown accept socket\n");
1206	if (accept_socket >= 0)
1207		{
1208		SHUTDOWN2(accept_socket);
1209		}
1210	}
1211
1212static int init_ssl_connection(SSL *con)
1213	{
1214	int i;
1215	const char *str;
1216	X509 *peer;
1217	long verify_error;
1218	MS_STATIC char buf[BUFSIZ];
1219
1220	if ((i=SSL_accept(con)) <= 0)
1221		{
1222		if (BIO_sock_should_retry(i))
1223			{
1224			BIO_printf(bio_s_out,"DELAY\n");
1225			return(1);
1226			}
1227
1228		BIO_printf(bio_err,"ERROR\n");
1229		verify_error=SSL_get_verify_result(con);
1230		if (verify_error != X509_V_OK)
1231			{
1232			BIO_printf(bio_err,"verify error:%s\n",
1233				X509_verify_cert_error_string(verify_error));
1234			}
1235		else
1236			ERR_print_errors(bio_err);
1237		return(0);
1238		}
1239
1240	PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1241
1242	peer=SSL_get_peer_certificate(con);
1243	if (peer != NULL)
1244		{
1245		BIO_printf(bio_s_out,"Client certificate\n");
1246		PEM_write_bio_X509(bio_s_out,peer);
1247		X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);
1248		BIO_printf(bio_s_out,"subject=%s\n",buf);
1249		X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);
1250		BIO_printf(bio_s_out,"issuer=%s\n",buf);
1251		X509_free(peer);
1252		}
1253
1254	if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)
1255		BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1256	str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1257	BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1258	if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1259	if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1260		TLS1_FLAGS_TLS_PADDING_BUG)
1261		BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1262#ifndef OPENSSL_NO_KRB5
1263	if (con->kssl_ctx->client_princ != NULL)
1264		{
1265		BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",
1266			con->kssl_ctx->client_princ);
1267		}
1268#endif /* OPENSSL_NO_KRB5 */
1269	return(1);
1270	}
1271
1272#ifndef OPENSSL_NO_DH
1273static DH *load_dh_param(char *dhfile)
1274	{
1275	DH *ret=NULL;
1276	BIO *bio;
1277
1278	if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1279		goto err;
1280	ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1281err:
1282	if (bio != NULL) BIO_free(bio);
1283	return(ret);
1284	}
1285#endif
1286
1287#if 0
1288static int load_CA(SSL_CTX *ctx, char *file)
1289	{
1290	FILE *in;
1291	X509 *x=NULL;
1292
1293	if ((in=fopen(file,"r")) == NULL)
1294		return(0);
1295
1296	for (;;)
1297		{
1298		if (PEM_read_X509(in,&x,NULL) == NULL)
1299			break;
1300		SSL_CTX_add_client_CA(ctx,x);
1301		}
1302	if (x != NULL) X509_free(x);
1303	fclose(in);
1304	return(1);
1305	}
1306#endif
1307
1308static int www_body(char *hostname, int s, unsigned char *context)
1309	{
1310	char *buf=NULL;
1311	int ret=1;
1312	int i,j,k,blank,dot;
1313	struct stat st_buf;
1314	SSL *con;
1315	SSL_CIPHER *c;
1316	BIO *io,*ssl_bio,*sbio;
1317	long total_bytes;
1318
1319	buf=OPENSSL_malloc(bufsize);
1320	if (buf == NULL) return(0);
1321	io=BIO_new(BIO_f_buffer());
1322	ssl_bio=BIO_new(BIO_f_ssl());
1323	if ((io == NULL) || (ssl_bio == NULL)) goto err;
1324
1325#ifdef FIONBIO
1326	if (s_nbio)
1327		{
1328		unsigned long sl=1;
1329
1330		if (!s_quiet)
1331			BIO_printf(bio_err,"turning on non blocking io\n");
1332		if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1333			ERR_print_errors(bio_err);
1334		}
1335#endif
1336
1337	/* lets make the output buffer a reasonable size */
1338	if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1339
1340	if ((con=SSL_new(ctx)) == NULL) goto err;
1341#ifndef OPENSSL_NO_KRB5
1342	if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1343		{
1344		kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
1345		kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
1346		}
1347#endif	/* OPENSSL_NO_KRB5 */
1348	if(context) SSL_set_session_id_context(con, context,
1349					       strlen((char *)context));
1350
1351	sbio=BIO_new_socket(s,BIO_NOCLOSE);
1352	if (s_nbio_test)
1353		{
1354		BIO *test;
1355
1356		test=BIO_new(BIO_f_nbio_test());
1357		sbio=BIO_push(test,sbio);
1358		}
1359	SSL_set_bio(con,sbio,sbio);
1360	SSL_set_accept_state(con);
1361
1362	/* SSL_set_fd(con,s); */
1363	BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1364	BIO_push(io,ssl_bio);
1365#ifdef CHARSET_EBCDIC
1366	io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
1367#endif
1368
1369	if (s_debug)
1370		{
1371		con->debug=1;
1372		BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
1373		BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1374		}
1375	if (s_msg)
1376		{
1377		SSL_set_msg_callback(con, msg_cb);
1378		SSL_set_msg_callback_arg(con, bio_s_out);
1379		}
1380
1381	blank=0;
1382	for (;;)
1383		{
1384		if (hack)
1385			{
1386			i=SSL_accept(con);
1387
1388			switch (SSL_get_error(con,i))
1389				{
1390			case SSL_ERROR_NONE:
1391				break;
1392			case SSL_ERROR_WANT_WRITE:
1393			case SSL_ERROR_WANT_READ:
1394			case SSL_ERROR_WANT_X509_LOOKUP:
1395				continue;
1396			case SSL_ERROR_SYSCALL:
1397			case SSL_ERROR_SSL:
1398			case SSL_ERROR_ZERO_RETURN:
1399				ret=1;
1400				goto err;
1401				/* break; */
1402				}
1403
1404			SSL_renegotiate(con);
1405			SSL_write(con,NULL,0);
1406			}
1407
1408		i=BIO_gets(io,buf,bufsize-1);
1409		if (i < 0) /* error */
1410			{
1411			if (!BIO_should_retry(io))
1412				{
1413				if (!s_quiet)
1414					ERR_print_errors(bio_err);
1415				goto err;
1416				}
1417			else
1418				{
1419				BIO_printf(bio_s_out,"read R BLOCK\n");
1420#if !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
1421				sleep(1);
1422#endif
1423				continue;
1424				}
1425			}
1426		else if (i == 0) /* end of input */
1427			{
1428			ret=1;
1429			goto end;
1430			}
1431
1432		/* else we have data */
1433		if (	((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1434			((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1435			{
1436			char *p;
1437			X509 *peer;
1438			STACK_OF(SSL_CIPHER) *sk;
1439			static char *space="                          ";
1440
1441			BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1442			BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
1443			BIO_puts(io,"<pre>\n");
1444/*			BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1445			BIO_puts(io,"\n");
1446			for (i=0; i<local_argc; i++)
1447				{
1448				BIO_puts(io,local_argv[i]);
1449				BIO_write(io," ",1);
1450				}
1451			BIO_puts(io,"\n");
1452
1453			/* The following is evil and should not really
1454			 * be done */
1455			BIO_printf(io,"Ciphers supported in s_server binary\n");
1456			sk=SSL_get_ciphers(con);
1457			j=sk_SSL_CIPHER_num(sk);
1458			for (i=0; i<j; i++)
1459				{
1460				c=sk_SSL_CIPHER_value(sk,i);
1461				BIO_printf(io,"%-11s:%-25s",
1462					SSL_CIPHER_get_version(c),
1463					SSL_CIPHER_get_name(c));
1464				if ((((i+1)%2) == 0) && (i+1 != j))
1465					BIO_puts(io,"\n");
1466				}
1467			BIO_puts(io,"\n");
1468			p=SSL_get_shared_ciphers(con,buf,bufsize);
1469			if (p != NULL)
1470				{
1471				BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1472				j=i=0;
1473				while (*p)
1474					{
1475					if (*p == ':')
1476						{
1477						BIO_write(io,space,26-j);
1478						i++;
1479						j=0;
1480						BIO_write(io,((i%3)?" ":"\n"),1);
1481						}
1482					else
1483						{
1484						BIO_write(io,p,1);
1485						j++;
1486						}
1487					p++;
1488					}
1489				BIO_puts(io,"\n");
1490				}
1491			BIO_printf(io,((con->hit)
1492				?"---\nReused, "
1493				:"---\nNew, "));
1494			c=SSL_get_current_cipher(con);
1495			BIO_printf(io,"%s, Cipher is %s\n",
1496				SSL_CIPHER_get_version(c),
1497				SSL_CIPHER_get_name(c));
1498			SSL_SESSION_print(io,SSL_get_session(con));
1499			BIO_printf(io,"---\n");
1500			print_stats(io,SSL_get_SSL_CTX(con));
1501			BIO_printf(io,"---\n");
1502			peer=SSL_get_peer_certificate(con);
1503			if (peer != NULL)
1504				{
1505				BIO_printf(io,"Client certificate\n");
1506				X509_print(io,peer);
1507				PEM_write_bio_X509(io,peer);
1508				}
1509			else
1510				BIO_puts(io,"no client certificate available\n");
1511			BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1512			break;
1513			}
1514		else if ((www == 2 || www == 3)
1515                         && (strncmp("GET /",buf,5) == 0))
1516			{
1517			BIO *file;
1518			char *p,*e;
1519			static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1520
1521			/* skip the '/' */
1522			p= &(buf[5]);
1523
1524			dot = 1;
1525			for (e=p; *e != '\0'; e++)
1526				{
1527				if (e[0] == ' ')
1528					break;
1529
1530				switch (dot)
1531					{
1532				case 1:
1533					dot = (e[0] == '.') ? 2 : 0;
1534					break;
1535				case 2:
1536					dot = (e[0] == '.') ? 3 : 0;
1537					break;
1538				case 3:
1539					dot = (e[0] == '/') ? -1 : 0;
1540					break;
1541					}
1542				if (dot == 0)
1543					dot = (e[0] == '/') ? 1 : 0;
1544				}
1545			dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
1546
1547			if (*e == '\0')
1548				{
1549				BIO_puts(io,text);
1550				BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1551				break;
1552				}
1553			*e='\0';
1554
1555			if (dot)
1556				{
1557				BIO_puts(io,text);
1558				BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1559				break;
1560				}
1561
1562			if (*p == '/')
1563				{
1564				BIO_puts(io,text);
1565				BIO_printf(io,"'%s' is an invalid path\r\n",p);
1566				break;
1567				}
1568
1569#if 0
1570			/* append if a directory lookup */
1571			if (e[-1] == '/')
1572				strcat(p,"index.html");
1573#endif
1574
1575			/* if a directory, do the index thang */
1576			if (stat(p,&st_buf) < 0)
1577				{
1578				BIO_puts(io,text);
1579				BIO_printf(io,"Error accessing '%s'\r\n",p);
1580				ERR_print_errors(io);
1581				break;
1582				}
1583			if (S_ISDIR(st_buf.st_mode))
1584				{
1585#if 0 /* must check buffer size */
1586				strcat(p,"/index.html");
1587#else
1588				BIO_puts(io,text);
1589				BIO_printf(io,"'%s' is a directory\r\n",p);
1590				break;
1591#endif
1592				}
1593
1594			if ((file=BIO_new_file(p,"r")) == NULL)
1595				{
1596				BIO_puts(io,text);
1597				BIO_printf(io,"Error opening '%s'\r\n",p);
1598				ERR_print_errors(io);
1599				break;
1600				}
1601
1602			if (!s_quiet)
1603				BIO_printf(bio_err,"FILE:%s\n",p);
1604
1605                        if (www == 2)
1606                                {
1607                                i=strlen(p);
1608                                if (	((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1609                                        ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1610                                        ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1611                                        BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1612                                else
1613                                        BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1614                                }
1615			/* send the file */
1616			total_bytes=0;
1617			for (;;)
1618				{
1619				i=BIO_read(file,buf,bufsize);
1620				if (i <= 0) break;
1621
1622#ifdef RENEG
1623				total_bytes+=i;
1624				fprintf(stderr,"%d\n",i);
1625				if (total_bytes > 3*1024)
1626					{
1627					total_bytes=0;
1628					fprintf(stderr,"RENEGOTIATE\n");
1629					SSL_renegotiate(con);
1630					}
1631#endif
1632
1633				for (j=0; j<i; )
1634					{
1635#ifdef RENEG
1636{ static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1637#endif
1638					k=BIO_write(io,&(buf[j]),i-j);
1639					if (k <= 0)
1640						{
1641						if (!BIO_should_retry(io))
1642							goto write_error;
1643						else
1644							{
1645							BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1646							}
1647						}
1648					else
1649						{
1650						j+=k;
1651						}
1652					}
1653				}
1654write_error:
1655			BIO_free(file);
1656			break;
1657			}
1658		}
1659
1660	for (;;)
1661		{
1662		i=(int)BIO_flush(io);
1663		if (i <= 0)
1664			{
1665			if (!BIO_should_retry(io))
1666				break;
1667			}
1668		else
1669			break;
1670		}
1671end:
1672#if 1
1673	/* make sure we re-use sessions */
1674	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1675#else
1676	/* This kills performance */
1677/*	SSL_shutdown(con); A shutdown gets sent in the
1678 *	BIO_free_all(io) procession */
1679#endif
1680
1681err:
1682
1683	if (ret >= 0)
1684		BIO_printf(bio_s_out,"ACCEPT\n");
1685
1686	if (buf != NULL) OPENSSL_free(buf);
1687	if (io != NULL) BIO_free_all(io);
1688/*	if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1689	return(ret);
1690	}
1691
1692#ifndef OPENSSL_NO_RSA
1693static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1694	{
1695	static RSA *rsa_tmp=NULL;
1696
1697	if (rsa_tmp == NULL)
1698		{
1699		if (!s_quiet)
1700			{
1701			BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1702			(void)BIO_flush(bio_err);
1703			}
1704		rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1705		if (!s_quiet)
1706			{
1707			BIO_printf(bio_err,"\n");
1708			(void)BIO_flush(bio_err);
1709			}
1710		}
1711	return(rsa_tmp);
1712	}
1713#endif
1714
1715#define MAX_SESSION_ID_ATTEMPTS 10
1716static int generate_session_id(const SSL *ssl, unsigned char *id,
1717				unsigned int *id_len)
1718	{
1719	unsigned int count = 0;
1720	do	{
1721		RAND_pseudo_bytes(id, *id_len);
1722		/* Prefix the session_id with the required prefix. NB: If our
1723		 * prefix is too long, clip it - but there will be worse effects
1724		 * anyway, eg. the server could only possibly create 1 session
1725		 * ID (ie. the prefix!) so all future session negotiations will
1726		 * fail due to conflicts. */
1727		memcpy(id, session_id_prefix,
1728			(strlen(session_id_prefix) < *id_len) ?
1729			strlen(session_id_prefix) : *id_len);
1730		}
1731	while(SSL_has_matching_session_id(ssl, id, *id_len) &&
1732		(++count < MAX_SESSION_ID_ATTEMPTS));
1733	if(count >= MAX_SESSION_ID_ATTEMPTS)
1734		return 0;
1735	return 1;
1736	}
1737